Patent application number | Description | Published |
20130047178 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A terminal device acquires a part of an audio-visual content regenerated by a video display apparatus. The terminal device acquires contents information of the audio-visual content based on the part of the audio-visual content. The terminal device acquires the available enhanced service based on the contents information and regenerates the available enhanced service. | 02-21-2013 |
20130047180 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A video display apparatus pairs with a first terminal device. The video display apparatus receives an audio-visual content, and displays the audio-visual content. The video display apparatus acquires enhanced service information on an available enhanced service for the audio-visual content, and notifies an occurrence of the available enhanced service to the first terminal device. | 02-21-2013 |
20130239163 | METHOD FOR RECEIVING ENHANCED SERVICE AND DISPLAY APPARATUS THEREOF - Provided are a method of receiving an enhanced service and a video display device thereof. The method includes: receiving an audio-visual (AV) content; extracting first feature information from the received AV content; receiving a database including at least one of content information, enhanced service information, and an enhanced service, which correspond to the first feature information, from a first server by transmitting the extracted first feature information to the first server; storing the database received from the first server in a memory; extracting second feature information from the received AV content; and searching and obtaining one of content information, enhanced service information, and an enhanced service, which correspond to the extracted feature information, from the database. | 09-12-2013 |
20130347030 | APPARATUS AND METHOD FOR PROCESSING AN INTERACTIVE SERVICE - A method of processing an interactive service and an apparatus thereof are disclosed. The present invention includes generating a trigger, wherein the trigger contains a first identifier and a parameter, wherein the first identifier identifies an application to be launched, wherein the parameter contains a media time stamp and a content identifier, wherein the media time stamp indicates a current point in the playout of a content, wherein the content identifier identifies the content currently being viewed, wherein the trigger is passed into the application after the application is launched, and wherein the application delivers the content identifier to a server in order to identify the content currently being viewed; generating a broadcast signal including the trigger; and transmitting the broadcast signal. | 12-26-2013 |
20140020009 | APPARATUS AND METHOD FOR PROCESSING AN INTERACTIVE SERVICE - A method of processing an interactive service and an apparatus includes generating an application parameter table including a first identifier and a second identifier, wherein the first identifier identifies a interactive programming segment which application parameter table pertains to, and wherein the second identifier identifies an application within the scope of application parameter table; generating an activation message file that indicates at least one of activation times of the applications, wherein the activation message file includes a third identifier and activation messages, wherein the third identifier matches the first identifier of application parameter table which contains the applications, wherein the activation message includes a fourth identifier and a start time information, wherein the fourth identifier matches the second identifier of the application in the application parameter table. | 01-16-2014 |
20140082655 | VIDEO DISPLAY APPARATUS AND OPERATING METHOD THEREOF - Provided are a video display device and a method of operating the same. The video display device request content recognition configuration information to a third party server that is not dependent on any single channel, and receives the content recognition configuration information from the third party server. The video display device extracts a plurality of content recognition configuration information items from the content recognition configuration information and configures the plurality of content recognition configuration information item in the video display device. The video display device obtains contents information of uncompressed content on the basis of the plurality of content recognition configuration information item, obtains an application on the basis of the content information, and executes the application. | 03-20-2014 |
20140181887 | METHOD FOR TRANSMITTING A BROADCAST SERVICE, APPARATUS FOR RECEIVING SAME, AND METHOD FOR PROCESSING AN ADDITIONAL SERVICE USING THE APPARATUS FOR RECEIVING SAME - According to the present invention, a method for receiving a broadcast service comprises the steps of: selecting a non-real time service object; receiving service signaling data corresponding to the selected non-real time service object; determining a consumption model of the non-real time service object on the basis of the service signaling data; acquiring, if the consumption model is a predetermined consumption model, first content item reception information contained in the non-real time service object from the service signaling data; receiving a first content item on the basis of the first content item reception information; and executing the first content item in response to a request for execution from the selected non-real time service object. | 06-26-2014 |
20140201779 | APPARATUS AND METHOD FOR PROCESSING AN INTERACTIVE SERVICE - A method of processing an interactive service and an apparatus thereof are disclosed. The present invention includes generating an application parameter table which includes information about at least one of applications, wherein the application parameter table includes a first identifier and a second identifier, wherein the first identifier identifies a interactive programming segment which application parameter table pertains to, and wherein the second identifier identifies an application within the scope of application parameter table; generating an activation message file that indicates at least one of activation times of the applications, wherein the activation message file includes a third identifier and activation messages, wherein the third identifier matches the first identifier of application parameter table which contains the applications, wherein the activation message includes a fourth identifier and a start time information, wherein the fourth identifier matches the second identifier of the application in the application parameter table, and wherein the start time information indicates the start time for an event targeted to the application relative to segment time; generating a multi-part message with the application parameter table as the first part and the activation message file as the second part; and transmitting the multi-part message to receiver via HTTP. | 07-17-2014 |
20140204271 | METHOD FOR TRANSMITTING A BROADCAST SERVICE, METHOD FOR RECEIVING A BROADCAST SERVICE, AND APPARATUS FOR RECEIVING A BROADCAST SERVICE - A broadcast service receiving method of a broadcast receiving device is provided. The method includes: receiving a trigger; receiving a triggered object; when a target of the received trigger is the triggered object, performing a trigger action on the triggered object at a trigger time; receiving real-time data available for the triggered object by an operation of the triggered object according to the performing of the triggered action; and providing a service by using the real-time data. | 07-24-2014 |
20140325544 | APPARATUS AND METHOD FOR PROCESSING AN INTERACTIVE SERVICE - A method of processing an interactive service and an apparatus includes generating an application parameter table including a first identifier and a second identifier, wherein the first identifier identifies a interactive programming segment which application parameter table pertains to, and wherein the second identifier identifies an application within the scope of application parameter table; generating an activation message file that indicates at least one of activation times of the applications, wherein the activation message file includes a third identifier and activation messages, wherein the third identifier matches the first identifier of application parameter table which contains the applications, wherein the activation message includes a fourth identifier and a start time information, wherein the fourth identifier matches the second identifier of the application in the application parameter table. | 10-30-2014 |
20140380356 | DEVICE AND METHOD FOR PROCESSING BI-DIRECTIONAL SERVICE RELATED TO BROADCAST PROGRAM - A broadcast receiver processing an interactive service related to a broadcast program according to one embodiment of the present invention includes a tuner configured to receive a trigger information including an information on operation timing of a TDO (triggered declarative object), wherein the trigger information includes at least one of a first URL information indicating a position of a signaling server configured to provide a TDO parameter table, a first trigger identification information identifying a trigger included in the TDO, a first time information setting a reference time for the trigger, and a second time information setting operation time of the trigger, a first network interface configured to access the signaling server using the first URL information and configured to receive a TDO parameter table signaling metadata information on at least one TDO in a specific segment from the signaling server, wherein the TDO parameter table includes a second URL information indicating a position of a content server configured to provide at least one file included in the TDO and a second identification information identifying a trigger included in the TDO, a second network interface configured to access the content server using the second URL information and configured to receive at least one file included in the TDO, a widget engine configured to operate the trigger, and a video processor configured to generate a video image including a TDO by the trigger operation and a broadcast program. | 12-25-2014 |
20150020094 | IMAGE DISPLAY APPARATUS AND METHOD FOR OPERATING SAME - An embodiment relates to a method for operating a video display device including a display unit, the method including obtaining uncompressed AV content, playing the uncompressed AV content through the display unit, extracting, based on a part of the uncompressed AV content, at least one of video characteristic information and audio characteristic information of the part, obtaining content information of the uncompressed AV content through a response to a query comprising at least one of the video characteristic information and the audio characteristic information, obtaining an enhanced service based on the content information, and playing the enhanced service through the display unit. | 01-15-2015 |
20150052570 | BROADCAST SERVICE RECEIVING METHOD AND BROADCAST SERVICE RECEIVING APPARATUS - Provided is a broadcast service receiving method of a broadcast receiving device. The method includes: receiving an video stream among a content transmitted as a broadcast service; generating a request message for at least one of signalling information on the broadcast service and signalling information on an adjunct service of the broadcast service on the basis of part of the received video stream; transmitting the generated request message to a server through an internet network; receiving a response message corresponding to the request message from the server; obtaining at least one of the broadcast service corresponding to the video stream and the adjunct service of the broadcast service on the basis of the received response message; and providing the obtained broadcast service and adjunct service, wherein the request message comprises first query information for specifying a request time interval and second query information for specifying at least one signalling table to be requested. | 02-19-2015 |
20150082336 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A terminal device acquires a part of an audio-visual content regenerated by a video display apparatus. The terminal device acquires contents information of the audio-visual content based on the part of the audio-visual content. The terminal device acquires the available enhanced service based on the contents information and regenerates the available enhanced service. | 03-19-2015 |
20150085191 | VIDEO DISPLAY DEVICE AND CONTROL METHOD THEREOF - Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information. | 03-26-2015 |
20150089535 | VIDEO DISPLAY APPARATUS AND OPERATING METHOD THEREOF - Provided are a video display device and a method of operating the same. The video display device request content recognition configuration information to a third party server that is not dependent on any single channel, and receives the content recognition configuration information from the third party server. The video display device extracts a plurality of content recognition configuration information items from the content recognition configuration information and configures the plurality of content recognition configuration information item in the video display device. The video display device obtains contents information of uncompressed content on the basis of the plurality of content recognition configuration information item, obtains an application on the basis of the content information, and executes the application. | 03-26-2015 |
20150110961 | Coated paper having a coating structure with controlled distribution of latex and method for preparing the same - Disclosed is coated paper having a coating structure in which styrene-butadiene latex distribution of a paper coating layer is controlled in order to reduce fold cracking of the coated paper and a method for manufacturing the same. The coated paper in which different types of latexes are separately applied to two coating layers exhibits considerably improved stiffness and reduced fold crack, as compared to the existing coated paper. | 04-23-2015 |
20150121416 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A video display apparatus pairs with a first terminal device. The video display apparatus receives an audio-visual content, and displays the audio-visual content. The video display apparatus acquires enhanced service information on an available enhanced service for the audio-visual content, and notifies an occurrence of the available enhanced service to the first terminal device. | 04-30-2015 |
20150150036 | VIDEO DISPLAY APPARATUS AND OPERATING METHOD THEREOF - Provided are a video display device and a method of operating the same. The method includes: executing an enhanced service playing application not dependent on any single channel; obtaining an uncompressed audio video (AV) content; playing the uncompressed AV content through the display unit; attempting to obtain contents information on the uncompressed AV content on the basis of a part of the uncompressed AV content; transmitting an enhanced service request message to an enhanced service providing server not dependent on any single channel by the enhanced service; receiving an enhanced service from the enhanced service providing server; and playing the enhanced service through the display unit by the enhanced service playing application. | 05-28-2015 |
20150156532 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A video display apparatus pairs with a first terminal device. The video display apparatus receives an audio-visual content, and displays the audio-visual content. The video display apparatus acquires enhanced service information on an available enhanced service for the audio-visual content, and notifies an occurrence of the available enhanced service to the first terminal device. | 06-04-2015 |
20150156536 | METHOD FOR RECEIVING ENHANCED SERVICE AND DISPLAY APPARATUS THEREOF - Provided are a method of receiving an enhanced service and a video display device thereof. The method includes: receiving an audio-visual (AV) content; extracting first feature information from the received AV content; receiving a database including at least one of content information, enhanced service information, and an enhanced service, which correspond to the first feature information, from a first server by transmitting the extracted first feature information to the first server; storing the database received from the first server in a memory; extracting second feature information from the received AV content; and searching and obtaining one of content information, enhanced service information, and an enhanced service, which correspond to the extracted feature information, from the database. | 06-04-2015 |
20150156537 | VIDEO DISPLAY DEVICE AND METHOD OF CONTROLLING THE SAME - Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a section of the uncompressed AV content; obtaining an enhanced service on the basis of the content information; and playing the enhanced service through the display unit. | 06-04-2015 |
20150208117 | METHOD FOR RECEIVING ENHANCED SERVICE AND DISPLAY APPARATUS THEREOF - Provided are a method of receiving an enhanced service and a video display device thereof. The method includes: receiving an audio-visual (AV) content; extracting first feature information from the received AV content; receiving a database including at least one of content information, enhanced service information, and an enhanced service, which correspond to the first feature information, from a first server by transmitting the extracted first feature information to the first server; storing the database received from the first server in a memory; extracting second feature information from the received AV content; and searching and obtaining one of content information, enhanced service information, and an enhanced service, which correspond to the extracted feature information, from the database. | 07-23-2015 |
20150222962 | APPARATUS AND METHOD FOR PROCESSING AN INTERACTIVE SERVICE - A method of processing an interactive service and an apparatus thereof are disclosed. The present invention includes generating a trigger, wherein the trigger contains a first identifier and a parameter, wherein the first identifier identifies an application to be launched, wherein the parameter contains a media time stamp and a content identifier, wherein the media time stamp indicates a current point in the playout of a content, wherein the content identifier identifies the content currently being viewed, wherein the trigger is passed into the application after the application is launched, and wherein the application delivers the content identifier to a server in order to identify the content currently being viewed; generating a broadcast signal including the trigger; and transmitting the broadcast signal. | 08-06-2015 |
20150350719 | METHOD FOR TRANSMITTING A BROADCAST SERVICE, METHOD FOR RECEIVING A BROADCAST SERVICE, AND APPARATUS FOR RECEIVING A BROADCAST SERVICE - A broadcast service receiving method of a broadcast receiving device is provided. The method includes: receiving a trigger; receiving a triggered object; when a target of the received trigger is the triggered object, performing a trigger action on the triggered object at a trigger time; receiving real-time data available for the triggered object by an operation of the triggered object according to the performing of the triggered action; and providing a service by using the real-time data. | 12-03-2015 |
20150373413 | VIDEO DISPLAY DEVICE AND CONTROL METHOD THEREOF - Provided are a video display device and a method of controlling the same. The method includes: obtaining an uncompressed audio-visual (AV) content; playing the uncompressed AV content through the display unit; obtaining content information of the uncompressed AV content on the basis of a content section of the uncompressed AV content; obtaining content change time information and enhanced service information on the basis of the content information; and determining a delay time for obtaining the next content information on the basis of the content change time information. | 12-24-2015 |
20150382043 | VIDEO DISPLAY DEVICE, TERMINAL DEVICE, AND METHOD THEREOF - A terminal device acquires a part of an audio-visual content regenerated by a video display apparatus. The terminal device acquires contents information of the audio-visual content based on the part of the audio-visual content. The terminal device acquires the available enhanced service based on the contents information and regenerates the available enhanced service. | 12-31-2015 |
Patent application number | Description | Published |
20120230232 | FLEXIBLE TIME DIVISION DUPLEX METHOD AND APPARATUS FOR COMMUNICATION SYSTEM - A flexible Time Division Duplex (TDD) method and apparatus is provided for improving efficiency of communication system. A communication method of a base station supporting TDD includes transmitting, to a terminal, first information including at least one of a flag indicating whether flexible subframes are used and an indicator indicating a candidate flexible subframe set to an uplink subframe; transmitting, to the terminal, second information including a switch flag indicating whether to use the candidate flexible subframe as a downlink subframe; and transmitting, to the terminal, when the candidate flexible subframe is indicated to be used as the downlink subframe, the candidate flexible subframe as the downlink subframe. | 09-13-2012 |
20120230270 | DOWNLINK TRANSMISSION/RECEPTION METHOD AND APPARATUS FOR MOBILE COMMUNICATION SYSTEM - A downlink transmission/reception apparatus and a method are provided for improving a data rate in a mobile communication based on Orthogonal Frequency Division Multiple Access (OFDMA). The downlink transmission method of a base station in a mobile communication system including at least one femto cell deployed in a macro cell includes generating signals to be mapped to at least one short symbol and a plurality of long symbols in a second type of subframe for the femto cell which differs from a first type of subframe for the macro cell in frequency, the first and second types of subframes being identical with each other in the time domain, and transmitting the at least one short symbol and the plurality of long symbols at predetermined positions in the second type of subframe. | 09-13-2012 |
20120230272 | HARQ METHOD AND APPARATUS FOR COMMUNICATION SYSTEM - Methods and apparatus are provided to support HARQ in a communication system adopting cross-carrier scheduling. A second cell is scheduled at a first cell. Data, transmitted by a terminal, at a subframe of the second cell is received. A subframe, in the first cell, is determined for transmitting a HARQ acknowledgement corresponding to the data, and a subframe, in the first cell, is determined carrying scheduling information of the second cell. It is determined whether the subframe for transmitting the HARQ acknowledgement and the subframe carrying scheduling information of the second cell are the same. When the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are not the same, the subframe for transmitting the HARQ acknowledgement and the subframe carrying the scheduling information are matched to each other. | 09-13-2012 |
20120263057 | METHOD AND APPARATUS FOR OPERATING SUBFRAME AND TRANSMITTING CHANNEL INFORMATION FOR CONTROLLING INTERFERENCE IN COMMUNICATION SYSTEM - A method and an apparatus for operating a subframe and transmitting channel information for controlling interference in a communication system are provided. If a macro evolved Node B (eNodeB) determines and reports an uplink protection subframe for suppressing uplink transmission to a neighboring eNodeB, transmits scheduling information for uplink data through a downlink subframe corresponding to an uplink protection subframe, and the uplink protection subframe determined by the neighboring eNodeB is reported, a small eNodeB sets the reported uplink protection subframe as a flexible subframe, and uses the flexible subframe for downlink transmission. If the flexible subframe is used for the downlink transmission, a terminal of the small eNodeB measures and transmits non-period channel information in the flexible subframe through at least one uplink subframe. | 10-18-2012 |
20120275406 | METHOD AND APPARATUS FOR USER-SPECIFIC REFERENCE SIGNALING ALLOCATION OF CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEMS - A new structure of user-specific reference signals design is provided. Higher spectrum efficiency is achieved, and two users may share the same resource for control signal transmission in a distributed antenna system via different distributed antennas. In addition, search space overlapping is enabled and thus control resource reuse is made possible. | 11-01-2012 |
20120300681 | DYNAMIC TDD DATA CHANNEL TRANSMISSION METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - A data channel transmission method and apparatus is provided for the wireless communication system operating in a dynamic Time Division Duplex (TDD) mode. The dynamic TDD data channel transmission method and apparatus herein optimizes system performance in adaptation to the variation of the uplink and downlink traffic, and configures the radio frame such that all of the subframes have a static region, thereby operating along with other terminals without compromising channel estimation performance. | 11-29-2012 |
20120300718 | CONTROL CHANNEL TRANSMISSION METHOD AND APPARATUS FOR TRANSMITTING DEDICATED REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for receiving a first control channel and a second control channel in a wireless communication system are provided. Control information for receiving the second control channel from a base station is received through higher layer signaling. A second control channel resource is determined from an entire control channel resource based on the control information. A first control channel resource is determined from the entire control channel resource according to the second control channel resource. | 11-29-2012 |
20120307689 | APPARATUS AND METHOD FOR DEFINING PHYSICAL CHANNEL TRANSMIT/RECEIVE TIMINGS AND RESOURCE ALLOCATION IN TDD COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method of defining physical channel transmit/receiving timings and resource allocation is provided for use in a Time Division Duplex (TDD) communication system supporting carrier aggregation. A method for receiving, at a base station, a Hybrid Automatic Repeat Request (HARQ) acknowledgement from a terminal in a Time Division Duplex (TDD) system supporting carrier aggregation of a primary cell and at least one secondary cell includes transmitting a downlink physical channel through one of the primary and secondary cells, receiving the HARQ acknowledgement corresponding to the downlink physical channel of the primary cell at a first timing predetermined for the primary cell, and receiving the HARQ acknowledgement corresponding to the downlink physical channel of the secondary cell at second timing, wherein the second timing is determined according to the first timing. | 12-06-2012 |
20120320806 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING TIME DIVISION DUPLEX FRAME CONFIGURATION INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for transmitting and receiving Time Division Duplex (TDD) frame configuration information are disclosed. The base station transmits TDD frame configuration information as system information to a user equipment through a common control channel so as to dynamically change the TDD frame configuration according to uplink and downlink traffic conditions. The base station may deliver the same system information to all user equipments in the cell, removing ambiguity in User Equipment (UE) operations and avoiding interference. In comparison to an existing method of delivering TDD frame configuration information through system information update, the disclosed method enables user equipments to rapidly cope with traffic changes. In addition, user equipments may receive and apply TDD frame configuration information at the same time. | 12-20-2012 |
20120322483 | METHOD AND APPARATUS FOR ALLOCATING RESOURCE OF COMMON CONTROL CHANNEL WITH DEDICATED REFERENCE SIGNAL - A method for allocating resources of a common control channel includes determining a carrier type, allocating, when the carrier is backward compatible, resources for a Physical Control Format Indicator CHannel (PCFICH), and allocating resources for a common control channel with a dedicated reference signal based on a Physical Resource Block allocated for the PCFICH. A UE can receive the common control channel without extra signaling by mapping the common control channel to the frequency resource based on the cell-specific parameter or channel. | 12-20-2012 |
20130021994 | METHOD AND APPARATUS FOR TRANSMITTING HARQ ACKNOWLEDGEMENT IN OFDM RADIO COMMUNICATION SYSTEM - A Physical Hybrid Automatic Repeat reQuest (ARQ) Indicator CHannel (PHICH) transmission method performed by a base station is provided. The method includes determining whether any PHICH resources are allocated to a current subframe; allocating, upon a determination that the current subframe does not have any PHICH resources allocated, a new PHICH resource; and transmitting a PHICH through the allocated new PHICH resource. | 01-24-2013 |
20130051373 | SIGNAL TRANSMISSION METHOD AND APPARATUS FOR CELL SEARCH IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for transmitting and receiving signals are provided for facilitating a cell search in a wireless communication system supporting various types of multicarrier transmission. A carrier type indication signal indicating a type of carrier supported by the base station is generated. The carrier type indication signal is transmitted with synchronization signals, to one or more terminals in a cell of the base station. A type of a carrier supported by a base station is determined based on a carrier type indication signal transmitted by the base station. A cell search procedure is performed to access the base station according to the type of the carrier supported by the base station. | 02-28-2013 |
20130114532 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL SIGNAL - Methods and apparatus are provided for transmitting and receiving a control signal. Indices of Resource Block (RB) sets are transmitted through higher layer signaling. Downlink Control Information (DCI) generated in a short DCI format is transmitted from a Base Station (BS) to a terminal. The DCI includes a first index indicating an RB set having at least one allocated RB and a second index indicating the at least one allocated RB. The terminal determines whether short DCI format is configured to be used. When the short DCI format is configured to be used, the first index and second index are received. The terminal communicates through the at least one allocated RB identified by the first and second indices. | 05-09-2013 |
20130114533 | METHOD AND APPARATUS FOR RESOURCE ALLOCATION IN MULTI-CARRIER WIRELESS SYSTEM - A method and apparatus for resource allocation in a multi-carrier wireless communication system enables transmission using smaller resource units and achieves efficient transmission of data channels with very low data rates, scheduling a greater number of user equipments without additional control channel overhead while maintaining compatibility with the resource allocation scheme of legacy user equipments. Thus, one cell controls a larger number of user equipments. In addition, as multiple user equipments are scheduled using a single control channel, resource efficiency is increased. | 05-09-2013 |
20130114534 | CONTROL CHANNEL DETECTION METHOD AND APPARATUS OF MIMO SYSTEM - A control channel transmission/reception method and apparatus are provided. The control channel transmission method of a base station includes acquiring a criterion for sorting control channels, sorting the controls channels into at least two control channel sets based on the criterion, configuring the control channels by allocating at least one antenna port to each control channel set, and transmitting the control channels as configured. | 05-09-2013 |
20130121276 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment. | 05-16-2013 |
20130157709 | DOWNLINK POWER CONTROL METHOD AND APPARATUS OF OFDM SYSTEM - A downlink power control method and apparatus for improving downlink power efficiency gain in an Orthogonal Frequency Division Multiplexing (OFDM) system is provided. The downlink power control method includes transmitting a downlink data channel at a normal subframe according to first downlink power information for the normal subframe, and transmitting the downlink data channel at an Almost Blank Subframe (ABS) according to second downlink power information for the ABS, wherein the first downlink power information for the normal subframe and the second downlink power information for the ABS differ from each other. The downlink power control method and apparatus is capable of regulating inter-cell interference variation between contiguous symbols at a predetermined level in a subframe at a terminal of a neighbor cell and making it possible to schedule the UE receiving the low power data channel using the power ratio of the feedbacks from the UE. | 06-20-2013 |
20130194951 | METHOD AND APPARATUS FOR PROVIDING DATA SERVICE USING BROADCASTING SIGNAL - A method and apparatus for providing a data service by using a broadcasting signal are provided. To transmit the broadcasting signal by an Access Point (AP) located within a coverage area of a base station (eNB), the AP transmits configuration information, used for transmission of the broadcasting signal on the same frequency band as that of the eNB, to the eNB, receives broadcasting signal transmission information, based on the configuration information, from the eNB, and transmits the broadcasting signal according to the broadcasting signal transmission information. | 08-01-2013 |
20130208634 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK AND DOWNLINK DATA IN TDD SYSTEM - A method and an apparatus for transmitting uplink/downlink data on Time Division Duplexing (TDD) carriers are provided. The method includes transmitting to a base station in a Primary Cell (PCell) and a Secondary Cell (SCell), a TDD Uplink-Downlink (UL-DL) configuration of the PCell having a DL subframe super-set or UL subset that are common in the SCell and the PCell and a TDD UL-DL configuration differing from each other, receiving data at a first subframe in the SCell, and transmitting, when a UL subframe set of the SCell is a subset of a UL subframe of the PCell, a feedback corresponding to the data at a subframe predefined in association with the first subframe in the PCell according to the TDD UL-DL configuration of the SCell. The method supports both the self-scheduling and cross-carrier scheduling of the UE using carriers of different TDD configurations. | 08-15-2013 |
20130215845 | METHOD AND DEVICE FOR GENERATING REFERENCE SIGNAL IN CELLULAR MOBILE COMMUNICATION SYSTEM - A method of transmitting a reference signal in a mobile communication system is provided. The method includes determining at least three scrambling variables comprising a first scrambling variable, a second scrambling variable, and a third scrambling variable, wherein the first scrambling variable, the second scrambling variable, and the third scrambling variable are different from each other, determining whether a demodulation reference signal is for more than or equal to 3-layer transmission, generating, if the demodulation reference signal is for more than or equal to 3-layer transmission, the demodulation reference signal sequence using the third scrambling variable and transmitting the demodulation reference signal sequence through a corresponding antenna port. | 08-22-2013 |
20130223295 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell. | 08-29-2013 |
20130223366 | ADAPTATION OF CONTROL SIGNALING TRANSMISSIONS TO VARIATIONS IN RESPECTIVE RESOURCES - A method and an apparatus for a User Equipment (UE) to receive a first type of a Physical Downlink Control CHannel (PDCCH) or a second type of a PDCCH in a Transmission Time Interval (TTI) are provided whereby the first type of PDCCH and the second type of PDCCH convey respective Downlink Control Information (DCI) formats containing Cyclic Redundancy Check (CRC) bits scrambled with a Radio Network Temporary Identifier (RNTI). The method includes receiving by the UE a first bitmap associated with a number of TTIs equal to the first bitmap size, wherein each element of the first bitmap indicates whether a TTI is of a first type or of a second type, decoding by the UE only PDCCH of the first type if the TTI is of the first type, and decoding by the UE only PDCCH of the second type if the TTI is of the second type. | 08-29-2013 |
20130286967 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel. | 10-31-2013 |
20130315081 | REFERENCE SIGNAL MEASUREMENT METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM INCLUDING PLURAL BASE STATIONS WITH DISTRIBUTED ANTENNAS - An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal. | 11-28-2013 |
20130322372 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING PHYSICAL CHANNELS IN COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A physical channel transmission method using inter-eNB carrier aggregation is provided for improvement of peak data rate and system throughput in a wireless communication system. The physical channel transmission method of a terminal in a communication system supporting carrier aggregation includes receiving carrier aggregation configuration information from a network; aggregating a plurality of carriers according to the carrier aggregation configuration information; and transmitting an uplink control channel on a common uplink frequency on which a plurality of base stations join the carrier aggregation. | 12-05-2013 |
20130329664 | CHANNEL STATE INFORMATION TRANSMISSION/RECEPTION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for transmitting/receiving channel state information for use in multi-antenna system are provided. A signal communication method of a base station having a plurality of antennas in a wireless communication system includes determining antenna ports of first and second directions based on directions of the plurality of antennas, allocating channel measurement resources for the respective antenna ports to a terminal, transmitting a feedback configuration to the terminal according to the channel measurement resources, and receiving feedback information from the terminal based on the channel measurement resource and the feedback configuration. The signal transmission/reception method and apparatus are advantageous in transmitting/receiving channel state information efficiently in the system using a plurality of antennas. | 12-12-2013 |
20140029484 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL CHANNEL IN INTRA-CELL CARRIER AGGREGATION SYSTEM - A control channel transmission method and an apparatus for facilitating control channel transmission in an intra-cell carrier aggregation system by applying Frequency Division Duplexing (FDD) cell's uplink control channel transmission timing for transmitting the uplink control channel corresponding to the TDD cells' downlink data are provided. The control channel transmission method and apparatus of the present disclosure are capable of transmitting/receiving data of the cells operating in the different duplexing modes simultaneously, resulting in improvement of peak data rate. | 01-30-2014 |
20140071862 | UPLINK TRANSMISSION METHOD AND APPARATUS IN INTER-ENB INTER-DUPLEX CARRIER AGGREGATION SYSTEM - A method and apparatus are provided for transmitting uplink signals including feedback for use in scheduling at different evolved Node Bs (eNBs) without intermodulation interference, especially in cases where the User Equipment (UE) is connected to an inter-duplex inter-eNB system in which the cooperation between eNBs is very slow or non-existent. | 03-13-2014 |
20140079100 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL STATE INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting and receiving CSI is provided for use in a wireless communication system using a plurality of antennas. The CSI transmission method of a terminal includes receiving a first CSI-RS and a second CSI-RS, transmitting a CSI indicator indicating one of the first and second CSI-RS corresponding to CSI to be transmitted, and transmitting the CSI generated based on the CSI indicator, until transmission of a new CSI indicator. | 03-20-2014 |
20140079149 | FEEDBACK METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM - A method and system are provided for a terminal to measure channel quality and transmit channel state information to a base station in a wireless mobile communication system operating in a multi-carrier-based multiple access scheme such as Orthogonal Frequency Division Multiple Access (OFDMA). The feedback information transmission method of a terminal in a mobile communication system includes receiving configuration information corresponding to at least two reference signals from a base station, receiving, at the terminal, feedback configuration information for measuring the at least two reference signals and generating feedback information based on a measurement result, receiving, at the terminal, the at least two reference signals, and transmitting, by the terminal, the feedback information at timings indicated in the feedback configuration information. | 03-20-2014 |
20140086082 | INTERFERENCE MEASUREMENT METHOD AND APPARATUS FOR USE IN DISTRIBUTED ANTENNA SYSTEM - An interference measurement method and apparatus for use in a Distributed Antenna System (DAS) is provided. The method for transmitting channel state information based on interference measurement of a terminal in a Distributed Antenna System (DAS) according to the present disclosure includes receiving configuration of Interference Measurement Resource (IMR) for measuring interferences caused by plural Transmission Points (TPs), receiving control information including scheduling information on Physical Downlink Shared Channel (PDSCH), determining whether IMR-based interference measurement and PDSCH reception occur at a same subframe, and transmitting the channel state information generated according to a result of the determination. The interference measurement method and apparatus of the present disclosure is capable of measuring interference for efficient communication in the distributed antenna system. | 03-27-2014 |
20140112220 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING COMMON CHANNEL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus are provided for transmission and reception of common channel information in a mobile communication system using multi-antenna-based beamforming. A number of beams to be used for transmission to a terminal is determined at a base station. The common channel information is generated corresponding to the number of beams. The common channel information is transmitted from the base station to the terminal through one of the beams. | 04-24-2014 |
20140126404 | INTERFERENCE-AWARE DETECTION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus are provided for transmitting and receiving control information, for interference detection by a User Equipment (UE), in a wireless communication system. A base station determines whether the UE supports interference-aware detection. When the UE supports interference-aware detection, the control information is generated that includes interference signal modulation scheme information and demodulation reference signal measurement information. The control information is transmitted to the UE. The interference at the UE is measured based on the received control information. | 05-08-2014 |
20140134993 | METHOD AND APPARATUS FOR CONTROLLING OPERATION STATE OF BASE STATION IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatus are provided for controlling transition of an operation state of a cell in a wireless communication system. The cell includes a transceiver configured to transmit and receive signals to and from a terminal and another cell. The cell also includes a controller configured to transition an operation state of the cell from an active state to a dormant state, transmit a discovery signal, determine whether a cell activation signal is received from a node that controls the cell, and transition the operation state of the cell from the dormant state to the active state when the cell activation signal is received. | 05-15-2014 |
20140146765 | MIMO TRANSMISSION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - A method for canceling interference between multiple terminals scheduled on the same time/frequency resource for communication between a terminal and a base station using a plurality of antennas. The interference cancellation method includes receiving, at a terminal, control channel information from a base station, determining other base station information and other terminal information based on the received control channel information, receiving a data channel from the base station, and cancelling interference to the data channel based on the other base station information and other terminal information. The terminal is capable of mitigating interference caused by the signals transmitted to other terminals using the least information even with legacy terminal receivers having no interference cancellation capability. | 05-29-2014 |
20140171073 | DISCOVERY SIGNAL TRANSMISSION/RECEPTION METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM - A discovery signal transmission/reception method and an apparatus for improving energy efficiency of the system are provided. The discovery signal transmission method of a base station in a mobile communication system according to the present disclosure includes acquiring a discovery signal configuration of a neighbor cell, transmitting the discovery signal configuration to a terminal, receiving a measurement report including a result of measurement on a discovery signal of the neighbor from the terminal, the measurement being performed based on the discovery signal configuration, and determining whether to make a handover decision for the terminal based on the measurement report. The discovery signal transmission/reception method of the present disclosure is advantageous in improving energy efficiency of a mobile communication system. | 06-19-2014 |
20140185560 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment. | 07-03-2014 |
20140185568 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel. | 07-03-2014 |
20140211671 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL CHANNEL IN INTRA-CELL CARRIER AGGREGATION SYSTEM - The present disclosure relates to a method and an apparatus for transmitting a control channel in an intra-cell carrier aggregation system. The method includes establishing a connection with a base station through a Primary cell (Pcell) of a Time Division Duplex (TDD) scheme and a Secondary cell (Scell) of a Frequency Division Duplex (FDD) scheme. The method also includes receiving data through the Scell before a timing configured as an uplink sub-frame according to a TDD UpLink-DownLink (UL-DL) configuration of the Pcell. The method also includes transmitting a feedback of the received data through the Pcell in a feedback sub-frame. By the method, a feedback for a data can be effectively transferred. | 07-31-2014 |
20140219199 | METHOD AND APPARATUS FOR TRANSMITTING CHANNEL SOUNDING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatuses for generating a channel sounding reference signal in a wireless communication system are discussed. In one aspect, a method is provided for User Equipment (UE) in a wireless communication system to transmit a channel Sounding Reference Signal (SRS). The method includes receiving a control channel for uplink data channel transmission from a Base Station (BS); determining whether the control channel includes information for aperiodic channel SRS transmission; and when it is determined that the control channel includes information for aperiodic channel SRS transmission: transmitting uplink data through a first carrier; and transmitting the channel SRS through a second carrier; wherein the first carrier and the second carrier are transmitted simultaneously to the BS. | 08-07-2014 |
20140219270 | METHOD AND APPARATUS FOR PROVIDING COMMON TIME REFERENCE IN WIRELESS COMMUNICATION SYSTEM - A terminal and method of performing device-to-device (D2D) communication by a terminal in a wireless communication system is provided. The method includes determining if a signal including synchronization information is received via at least one of an uplink and a downlink; and when the signal including the synchronization information is not received, transmitting a synchronization information-containing signal. | 08-07-2014 |
20140233475 | SCRAMBLING SEQUENCE GENERATION METHOD AND APPARATUS FOR USE IN DEVICE-TO-DEVICE COMMUNICATION - A scrambling sequence generation method and apparatus of a device supporting Device-to-Device communication are provided. The method includes acquiring at least one of an identifier of the device, an identifier of a counterpart device and a preconfigured value; determining an initial value of the scrambling sequence for the Device-to-Device communication based on the at least one of the identifier of the device, the identifier of the counterpart device, and the preconfigured value; and generating the scrambling sequence using the initial value. | 08-21-2014 |
20140233476 | METHOD AND APPARATUS FOR POWER CONTROL AND MULTIPLEXING FOR DEVICE TO DEVICE COMMUNICATION IN WIRELESS CELLULAR COMMUNICATION SYSTEM - A method of controlling power of a user equipment for device to device communication in a wireless communication system, and a user equipment thereof, are provided. The method includes receiving power control related information of the D2D communication from a Base Station (BS), determining transmission power of the UE based on maximum available power of the UE and the received power control related information of the D2D communication, and transmitting data according to the determined transmission power. | 08-21-2014 |
20140241192 | METHOD AND APPARATUS FOR EXCHANGING INFORMATION BETWEEN BASE STATION AND TERMINAL - A method and apparatus of exchanging information on the number of layers which is supported commonly between the base station and the terminals in Multi-User Multiple Input Multiple Output (MU-MIMO) environment is provided for performance enhancement. The communication method of a terminal in a wireless communication system according to the present disclosure includes receiving a reference signal and information on a number of layers supportable simultaneously from a base station, measuring a channel state value based on the reference signal and the number of layers, determining whether the measured channel state value fulfills a minimum required channel state value, and transmitting, when the measured channel state value fulfills the minimum required channel state value, a value determined based on the measured channel state value to the base station. | 08-28-2014 |
20140241220 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL CHANNEL DEPENDING ON UE CAPABILITY IN INTRA-CELL CARRIER AGGREGATION SYSTEM - A method and an apparatus for transmitting a control channel when cells have different duplex structures in an intra-cell carrier aggregation system are provided. The method of transmitting and/or receiving a control channel by an evolved Node B (eNB) in a wireless communication system includes receiving capability information of a User Equipment (UE) from the UE, transmitting scheduling information to the UE, transmitting downlink data according to the transmitted scheduling information, and receiving an uplink control channel for the downlink data from the UE based on the capability information of the UE. | 08-28-2014 |
20140241273 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION FOR INTERFERENCE MEASUREMENT IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting control information to a User Equipment (UE) by an evolved Node B (eNB) for interference measurement in a wireless communication system are provided. The eNB determines whether the UE can perform interference management for receiving a data signal transmitted from the eNB based on information of an interference signal. When it is determined that the UE can perform the interference management, the eNB transmits to the UE configuration information for receiving the data signal by applying the interference management by the UE, and then transmits to the UE downlink control information including transmission power control information indicating whether a transmission power of a DeModulation Reference Signal (DMRS) corresponding to the interference signal is different from a transmission power of the interference signal. | 08-28-2014 |
20140241274 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FEEDBACK INFORMATION IN MOBILE COMMUNICATION SYSTEM USING MULTIPLE ANTENNAS - A method and an apparatus for transmitting/receiving feedback in a mobile communication system are provided. A method of configuring and receiving feedback information of an evolved Node B (eNB) includes transmitting configuration information on a plurality of reference signals including a first reference signal and a second reference signal to a User Equipment (UE); transmitting feedback configuration information including first feedback configuration information on the first reference signal and second feedback configuration information configured such that feedback information on the second reference signal is generated with reference to the first feedback configuration information to the UE; transmitting the reference signal to the UE according to the configuration information on the reference signal; and receiving feedback information including first feedback information according to the first feedback configuration information and second feedback information according to the second feedback configuration information from the UE. | 08-28-2014 |
20140254516 | METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting control information is provided for use in detection of interference an signal in a wireless communication system. An interference control method of a base station of a mobile communication system includes scheduling data to be transmitted to a terminal and transmitting control information including data channel information on the scheduled data and interference signal information to the terminal. | 09-11-2014 |
20140254702 | METHOD AND APPARAPTUS FOR TRANSMITTING AND RECEIVING CHANNEL RELATED INFORMATION - The present disclosure relates to a method and an apparatus for transmitting and receiving channel related information. A method of transmitting channel related information of a UE according to an embodiment of the present disclosure includes configuring a sub-channel corresponding to a part of a plurality of antennas of an eNB; acquiring a Channel Estimation Error (CEE) and a Precoding Matrix Indicator (PMI) corresponding to the sub-channel; and transmitting a Sub-channel Indicator (SI) indicating the sub-channel, according to the CEE and the PMI. In accordance with an embodiment of the present disclosure, the channel related information is efficiently transmitted and received in a system in which a plurality of antennas is used. | 09-11-2014 |
20140254703 | COMMUNICATION METHOD AND APPARATUS FOR USE IN MULTIPLE ANTENNA SYSTEM - A method and apparatus for transmitting and receiving signals is provided for use in a codebook-based closed-loop multiple antenna system. A method for receiving signals in a codebook-based multiple antenna system according to the present disclosure includes estimating a desired signal and an interference channel, determining a codebook index using the desired channel, a Hermitian of the desired channel, and the interference channel, and feeding back the codebook index to a transmitter. The multi-antenna system of the present disclosure is advantageous in suppressing the interference from other cells and maximizing the gain of the desired signal especially when the number of receive antennas is greater than the reception streams and in designing a codebook with high performance as compared to the Grassmanian codebook and low complexity. | 09-11-2014 |
20140256369 | DEVICE-TO-DEVICE COMMUNICATION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - A method for allowing terminals to exchange discovery or synchronization signals to determine their presences among each other within a service area of a base station is provided. The method includes collecting multicast identifiers of another terminal for use in multicast communication, receiving a multicast control channel for Device-to-Device (D2D) multicast communication, performing Cyclic Redundancy Check (CRC) on the received multicast control channel using the collected multicast identifiers, and receiving, when the CRC is successful, the D2D multicast according to the multicast control channel. The D2D communication method and apparatus is advantageous in that the D2D terminal is capable of transmitting the discovery or synchronization signal to discover the neighbor terminals without disturbing downlink or uplink communication between the base station and the terminal, wherein the base station configures the resource for D2D communication so as to support D2D communication without an inter-device interference. | 09-11-2014 |
20140269519 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and apparatus is provided. The base station of the present invention transmits configuration information on a control channel to a terminal, checks an aggregation level for use in transmitting the control channel, maps Demodulation Reference Signal (DMRS) to resource elements in a resource block depending on the aggregation level, determines, when the resource elements of the DMRS correspond to a first resource element set, whether to map the DMRS to resource elements corresponding to a second resource element set in the resource block, and transmits the DMRS and control channel to the terminal according to the determination result. | 09-18-2014 |
20140301228 | DEVICE-TO-DEVICE COMMUNICATION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - Methods and apparatuses are provided for Device-to-Device (D2D) communication in a wireless communication system. A terminal receives a D2D communication initiation message from a base station. The terminal measures strength of a received signal on a radio resource predetermined for use in the D2D communication. The terminal transmits a measurement report of the strength of the received signal to the base station. The terminal receives allocation of a resource in the radio resource for transmitting a discovery signal to another terminal for the D2D communication from the base station. | 10-09-2014 |
20140301252 | METHOD AND APPARATUS FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting channel information by a User Equipment (UE) when an uplink sub-frame is used for downlink transmission in a communication system using a dynamic Time Division Duplex (TDD) UpLink-DownLink (UL-DL) configuration is provided. The method includes receiving reconfiguration information for reconfiguration of TDD uplink and downlink from an evolved Node B (eNB), measuring interference in a first sub-frame changed from an uplink sub-frame to a downlink sub-frame by the reconfiguration, and transmitting information on interference measured in only the first sub-frame to the eNB in an uplink sub-frame according to a predetermined timing. | 10-09-2014 |
20140301306 | 256QAM SIGNAL TRANSMISSION/RECEPTION METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM - A method and an apparatus for transmitting and receiving signals modulated with 256 Quadrature Amplitude Modulation (256QAM) for use in a mobile communication system are provided. The method includes receiving a first signal from a terminal, determining a modulation application criterion for data communication with the terminal based on the first signal, receiving a second signal including an index from the terminal, and determining a modulation scheme to be applied to at least one of the signals communicating with the terminal based on the modulation application criterion and the received index. | 10-09-2014 |
20140301320 | HARQ METHOD AND APPARATUS FOR COMMUNICATION SYSTEM - Methods and apparatuses are provided for data transmission of a User Equipment (UE) in a communication system supporting HARQ. A Physical Downlink Control Channel (PDCCH) corresponding to a second cell is received in a first cell. An Uplink/Downlink (UL/DL) configuration of the first cell is identified as an Uplink (UL) reference UL/DL configuration, if the UE is configured with at least two cells including the first cell and the second cell, a PDCCH corresponding to the second cell is monitored on the first cell, and a pair of the UL/DL configuration of the first cell and a UL/DL configuration of the second cell is a predetermined set. A Physical Uplink Shared Channel (PUSCH) transmission is adjusted based on the identified UL reference UL/DL configuration. | 10-09-2014 |
20140313915 | METHOD AND APPARATUS FOR EXCHANGING MESSAGES AMONG EVOLVED NODE BS IN COOPERATIVE COMMUNICATION SYSTEM - A method and apparatus are provided for supporting a CoMP communication by an eNB of a mobile communication system. The method includes: receiving a channel measurement report relating to at least one transmission channel from a UE; and transmitting channel feedback information including information of interference with surrounding eNBs performing the CoMP communication on the at least one transmission channel, to a central controller, based on the received channel measurement report. In the method, adjacent cells can cooperate to transmit data through a CoMP transmission for a UE located in a cell boundary area in a cellular mobile communication system. | 10-23-2014 |
20140323126 | METHOD AND APPARATUS FOR INDICATING DISCOVERY SIGNAL RESOURCES IN DEVICE-TO-DEVICE WIRELESS COMMUNICATIONS - Methods and apparatuses are provided for indicating a discovery signal resource by a User Equipment (UE) performing device-to-device communication. The UE receives information relating to the device-to-device communication from a base station. A synchronization signal including discovery signal-related information, is transmitted from the UE to a nearby UE, based on the information relating to the device-to-device communication. A discovery is performed based on the discovery signal-related information. | 10-30-2014 |
20140341091 | DYNAMIC TDD OPERATION METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for signal transmission and reception in a Time Division Duplex (TDD) system. The method includes receiving, from a base station, first configuration information including an uplink reference Uplink-Downlink (UL-DL) configuration; receiving, from the base station, second configuration information including a downlink reference UL-DL configuration; receiving, from the base station, third configuration information including an equivalent UL-DL configuration based on the first configuration information and the second configuration information; and communicating signals with the base station based on the third configuration information. | 11-20-2014 |
20150036642 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel. | 02-05-2015 |
20150043400 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell. | 02-12-2015 |
20150043401 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell. | 02-12-2015 |
20150131602 | APPARATUS AND METHOD FOR DEFINING PHYSICAL CHANNEL TRANSMIT/RECEIVE TIMINGS AND RESOURCE ALLOCATION IN TDD COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A method of defining physical channel transmit/receiving timings and resource allocation is provided for use in a Time Division Duplex (TDD) communication system supporting carrier aggregation. A method for receiving, at a base station, a Hybrid Automatic Repeat Request (HARQ) acknowledgement from a terminal in a Time Division Duplex (TDD) system supporting carrier aggregation of a primary cell and at least one secondary cell includes transmitting a downlink physical channel through one of the primary and secondary cells, receiving the HARQ acknowledgement corresponding to the downlink physical channel of the primary cell at a first timing predetermined for the primary cell, and receiving the HARQ acknowledgement corresponding to the downlink physical channel of the secondary cell at second timing, wherein the second timing is determined according to the first timing. | 05-14-2015 |
20150163780 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel. | 06-11-2015 |
20150163781 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment. | 06-11-2015 |
20150163782 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM - A control channel transmission/reception method and an apparatus for transmitting/receiving control channels using a resource allocation scheme applicable regardless of reference signal transmission or whether the reference signal is transmitted in distributed transmission mode or localized transmission mode are provided. The control channel transmission method includes mapping a Demodulation Reference Signal (DMRS) to Resource Elements (REs) of a Resource Block (RB) for transmitting a control channel, mapping the control channel to the REs numbered with numbers of predetermined number of Resource Element Groups (REGs) in a frequency-first ascending order cyclically, with the exception of the REs to which the DMRS is mapped, and transmitting the DMRS and the control channel. | 06-11-2015 |
20150163783 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEMS - A method for transmitting control information by a base station in a wireless communication system is provided. The method includes determining a precoder to be applied to a resource and a Demodulation Reference Signal (DMRS) port, the resource being used to transmit the control information, and the DMRS port corresponding to the resource and being used to transmit a DMRS, precoding the resource and the DMRS port by using the determined precoder, and transmitting the control information and the DMRS to a user equipment. | 06-11-2015 |
20150195063 | METHOD AND APPARATUS FOR OPERATING SOUNDING IN WIRELESS COMMUNICATION SYSTEM IN WHICH UPLINK CONTROL CHANNEL RESOURCE DYNAMICALLY CHANGES - The present invention relates to a procedure for transceiving a sounding reference signal and to a method for operating sounding in a wireless communication system in which an uplink control channel resource dynamically changes. More particularly, the method for transmitting a sounding reference signal by a terminal in a wireless communication system according to the present invention comprises the steps of: receiving uplink/downlink configuration information transmitted from a base station; checking whether a conflict occurs between a physical uplink control channel (PUCCH) resource region based on the uplink/downlink configuration information and a sounding reference signal (SRS); and skipping the transmission of the SRS upon the occurrence of a conflict. The present invention has the advantage of efficiently solving the problem of conflicts between the SRS and the uplink control channel resource without increasing the power consumption burden in the terminal or without excessive restrictions on an SRS transmission subframe or sounding band. | 07-09-2015 |
20150230260 | REFERENCE SIGNAL MEASUREMENT METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM INCLUDING PLURAL BASE STATIONS WITH DISTRIBUTED ANTENNAS - An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal. | 08-13-2015 |
20150264670 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION TO REMOVE AND SUPPRESS INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - A communication method and an apparatus for transferring interference-related control information in order to enhance reception performance of a user terminal that receives downlink signals in a cellular mobile communication system based on a long term evolution-advanced (LTE-A) system are provided. The method includes receiving transmission parameters of interference, which include information on a resource by which interference data is not transmitted, performing blind detection using the information on a resource by which interference data is not transmitted, performing error correction encoding using the transmission parameters of the interference and the blind detection result, and decoding the received data. | 09-17-2015 |
20150271830 | METHOD AND APPARATUS FOR TRANSMITTING INTERFERENCE INFORMATION FOR NETWORK ASSISTED INTERFERENCE CANCELLATION AND SUPPRESSION IN WIRELESS COMMUNICATION SYSTEM - A method for transmitting interference related control information in order to improve a reception performance of a terminal that receives a downlink in a cellular mobile communication system based on the LTE-A system includes receiving a higher layer control message including probability information of a modulation scheme for an interference signal, from a base station, and performing error-correcting coding using a probability value of a modulation scheme for an interference signal, which is included in the higher layer control message. A base station in a mobile communication system, the base station includes a controller configured to generate probability information of a modulation scheme for an interference signal, and transmit, to the terminal, a higher layer control message comprising the probability information of the modulation scheme for the interference signal. | 09-24-2015 |
20150280868 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK AND DOWNLINK DATA IN TDD SYSTEM - A method and an apparatus for transmitting uplink/downlink data on time division duplexing (TDD) carriers are provided. The method includes transmitting to a base station in a primary cell (PCell) and a secondary cell (SCell), a TDD uplink (UL)/downlink (DL) configuration of the PCell having a DL subframe super-set or UL subset that are common in the SCell and the PCell and a TDD UL-DL configuration differing from each other, receiving data at a first subframe in the SCell, and transmitting, when a UL subframe set of the SCell is a subset of a UL subframe of the PCell, a feedback corresponding to the data at a subframe predefined in association with the first subframe in the PCell according to the TDD UL-DL configuration of the SCell. The method supports both the self-scheduling and cross-carrier scheduling of the UE using carriers of different TDD configurations. | 10-01-2015 |
20150282138 | SOFT BUFFER SIZE DETERMINATION METHOD FOR DUAL CONNECTIVITY - A method for a dual connectivity-enabled terminal which receives downlink data from at least one of a macro and a pico base station to transmit uplink control information corresponding to downlink data is provided. The method includes receiving the downlink data from a base station, determining whether the terminal is configured with a secondary cell group (SCG), determining, if the terminal is configured with the SCG, a size of a soft buffer per code block per cell based on a number of configured serving cells of the terminal, and storing the received downlink data in the soft buffer based on the size of the soft buffer per code block per cell, wherein the configured serving cells are included in a master cell group (MCG) and the SCG. | 10-01-2015 |
20150289238 | METHOD AND APPARATUS FOR SPATIAL MULTIPLEXING IN WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a communication method and system for converging a 5th-Generation communication system to support higher data rates beyond a 4th-Generation system with a technology for Internet of Things (IoT). The present disclosure is applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method and apparatus for two-dimensional spatial multiplexing transmission using multiple antennas in a wireless communication system is provided. A user equipment receives pieces of antenna configuration information and corresponding channel measurement resources from a base station, and sends channel information with respect to at least one antenna configuration as feedback to the base station. An indicator indicating a composition of the feedback information is transmitted first, and then the composition information and feedback information are transmitted. | 10-08-2015 |
20150319633 | SELECTIVE CHANNEL FEEDBACK METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM - Systems, base stations, terminals, and methods for group-selective channel feedback in a wireless communication system are described. In one signal measurement method for a base station supporting Multiuser Multiple-Input Multiple-Output (MU-MIMO), the base station allocates a group identifier to a terminal group for performing and reporting signal measurements simultaneously. When the base station transmits control information including the group identifier, each one of terminals belonging to the terminal group performs signal measurement, generates signal measurement feedback, and simultaneously transmits the signal measurement feedback to the base station. | 11-05-2015 |
20150327095 | INTERFERENCE MEASUREMENT METHOD AND APPARATUS FOR USE IN MOBILE COMMUNICATION SYSTEM - A base station and a method thereof for acquiring channel status information in a mobile communication system operating in a multiuser multiple-input multiple-output transmission mode are provided. The method includes generating and transmitting, to a terminal, interference measurement configuration information for measuring interference caused by signals transmitted from a serving base station of the terminal to at least one other terminal in the transmission mode; and receiving channel status information generated using the transmitted information from the terminal. The present disclosure relates to a communication method and system for converging a 5th-Generation communication system for supporting higher data rates beyond a 4th-Generation system with a technology for Internet of Things, and may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. | 11-12-2015 |
20150341093 | METHOD AND APPARATUS FOR GENERATING AND TRANSMITTING CHANNEL FEEDBACK IN MOBILE COMMUNICATION SYSTEM EMPLOYING TWO DIMENSIONAL ANTENNA ARRAY - The present disclosure relates to a communication method and system for converging a 5 | 11-26-2015 |
20150341100 | CHANNEL STATE INFORMATION FEEDBACK METHOD AND APPARATUS FOR 2-DIMENSIONAL MASSIVE MIMO COMMUNICATION SYSTEM - The present disclosure relates to a communication method and system for converging a 5 | 11-26-2015 |
20150365153 | PER-STREAM CHANNEL GAIN FEEDBACK-BASED MULTI-STREAM MU-CQI ESTIMATION METHOD AND APPARATUS - A PSCG feedback-based multi-stream multiuser CQI estimation method and apparatus is provided for estimating multi-stream MU-CQI efficiently based on per-stream channel gain feedback. A feedback information transmission method of a terminal in a wireless communication system according to the present disclosure includes estimating a downlink channel based on a channel state information reference signal transmitted by a base station, determining a number of streams based on the estimated downlink channel, generating the feedback information corresponding to the number of streams, and transmitting the feedback information to the base station. | 12-17-2015 |
20150372741 | METHOD AND APPARATUS FOR FEEDING BACK CHANNEL ESTIMATION IN MULTI-INPUT MULTI-OUTPUT SYSTEM - Disclosed are a method and an apparatus for feeding back channel estimation in a MIMO system. A terminal receives a reference signal for estimating a channel from a base station; estimates the channel based on the reference signal; generates channel estimation information according to the channel estimation result and generates error information indicating an error of the channel estimation; and transmits feedback information including the channel estimation information and the error information to the base station. | 12-24-2015 |
20150373736 | METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION REFERENCE SIGNAL, HYBRID SPATIAL DIVISION MULTIPLEXING, AND SPACE DIVISION MULTIPLE ACCESS IN WIRELESS COMMUNICATION SYSTEM USING TWO-DIMENSIONAL PLANAR ARRAY ANTENNA - The present invention proposes a hybrid spatial multiplexing (SM) and a space division multiple access (SDMA) technique in a frequency division duplex (FDD) massive multiple-input multiple output (MIMO) system using a two-dimensional planar array antenna, which effectively transmits a channel state information reference signal (CSI-RS) for estimating a downlink two-dimensional space channel using only a limited amount of downlink radio resources, and optimally selects and performs the SM and SDMA techniques in a two-dimensional space channel. To this end, the present invention proposes a technique which defines space resource blocks (SRB) by grouping space elements (SE) having a high spatial correlation between downlink channels in the horizontal dimension and corresponding SEs thereof in the vertical dimension, and transmits CSI-RSs for estimating channels in vertical dimension SEs corresponding to one selected horizontal SE in each SRB every transmit time interval (TTI). The present invention proposes a technique wherein user equipment (UE) estimates the spatial correlation between channels of different horizontal dimension SEs belonging to the same SRB received in different TTIs and the spatial correlation between channels of horizontal dimension SEs belonging to different SRBs received in the same TTI, and feeds information for changing the size of SRB of the corresponding UE to an optimal size back to eNodeB. The present invention proposes a technique wherein the UE estimates downlink channels through CSI-RSs transmitted from each SRB, and each UE feeds an index of a preferred SRB, a rank of the corresponding SRB in the vertical dimension, and channel quality information (CQI) back to eNodeB. When each UE determines the rank, it is possible to transmit the ranks to the fullest extent in the vertical dimension and only a single rank from each SRB in the horizontal dimension. | 12-24-2015 |
20150382343 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell. | 12-31-2015 |
20150382344 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method for transmitting a physical channel in a Time Division Duplex (TDD) communication system capable of carrier aggregation is provided for supporting aggregation of carriers having different TDD configurations. The communication method of a terminal in a TDD radio communication system accomplishing broadband through carrier aggregation of primary and secondary cells, of which aggregated carriers have different TDD Uplink-Downlink (UL-DL) configurations, includes receiving Physical Downlink Shared Channel (PDSCH) through the secondary cell, and transmitting acknowledgement information corresponding to the PDSCH to a base station, where acknowledgement information is transmitted on a Physical Uplink Control CHannel (PUCCH) of the primary cell. | 12-31-2015 |
20160028461 | REFERENCE SIGNAL MEASUREMENT METHOD AND APPARATUS FOR USE IN WIRELESS COMMUNICATION SYSTEM INCLUDING PLURAL BASE STATIONS WITH DISTRIBUTED ANTENNAS - An apparatus and a method of measuring a reference signal for efficient downlink transmission in a mobile communication system are provided. The system includes plural base stations, each having a plurality of antennas distributed in the service area thereof based on a Distributed Antenna System (DAS). A method for a base station to notify a terminal of reference signal measurement information in a mobile communication system comprises determining whether the terminal is in a Rank Indicator/Precoding Matrix Indicator (RI/PMI) disabled mode, selecting, when the terminal is in the RI/PMI disabled mode, the reference signal to be measured by the terminal between a Cell-specific Reference Signal (CRS) and a Channel Status Information Reference Signal (CSI-RS), notifying the terminal of the reference signal measurement information with the selection result, and receiving channel information generated based on the reference signal measurement information from the terminal. | 01-28-2016 |
20160050007 | TRANSMISSION APPARATUS AND METHOD OF MASSIVE MULTI-ANTENNA SYSTEM - The present invention relates to a method and apparatus for supporting multi-users using a massive MIMO technology in an FDD environment. A communication method of a UE in a MIMO system according to an embodiment of the present invention may comprise: estimating a channel; calculating a first precoding matrix indication having a minimum correlation with the estimated channel; and transmitting the calculated first precoding matrix indication to a BS. According to an embodiment of the present invention, in a massive MIMO system, the UE feeds not a pre-coder close to a channel thereof but a pre-coder close to a null space of a channel back to the BS, so that an IUI can be reduced even in an | 02-18-2016 |
20160050601 | METHOD AND APPARATUS FOR SELECTING DEDICATED CORE NETWORK - Various communication techniques and related systems for a fusion between a 5th generation (5G) communication system and Internet of Things (IoT) technology are provided. A user equipment (UE) is required to select a dedicated core network so as to receive a suitable service. In a method for transmitting and receiving a signal, an enhanced Node B (eNB) of a mobile communication system transmits a first request message to a first mobile management entity (MME), receives a reroute command message based on the first request message from the first MME, and transmits a second message to a second MME based on the reroute command message. Herein, the reroute command message contains the first request message, at least one MME identifier, and a UE identifier. | 02-18-2016 |
20160065344 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CHANNEL-RELATED INFORMATION - Provided is a method and apparatus for transmitting and receiving channel-related information. A method for allowing a terminal to transmit channel-related information according to an embodiment of the present invention may include: receiving a first signal including data and a reference signal; estimating a modulation order corresponding to a channel state from the first signal; and transmitting channel-related information including a first modulation order indicator (MOI), which indicates the estimated modulation order, to a base station. Accordingly, signals can be efficiently transmitted and received. | 03-03-2016 |
20160066304 | DYNAMIC TDD DATA CHANNEL TRANSMISSION METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEM - A method by a terminal, a method by a base station, a terminal, and a base station are provided. The method by the terminal includes receiving system information including first time division duplex (TDD) configuration information; receiving control information via a higher layer signaling; monitoring a physical downlink control channel (PDCCH) in a first subframe identified based on the control information; and identifying second TDD configuration information based on the monitoring result. The method by the base station includes transmitting system information including first time division duplex (TDD) configuration information; transmitting control information via a higher layer signaling; transmitting downlink control information on a physical downlink control channel (PDCCH) in a first subframe identified based on the control information, wherein the downlink control information is used to identify second TDD configuration information. | 03-03-2016 |
20160072565 | PRECODING-RELATED SIGNAL TRANSMITTING OR RECEIVING METHOD AND APPARATUS - The present specification relates to a precoding-related information transmitting or receiving method and apparatus. A precoder-related information receiving method by a user equipment according to an embodiment of the present specification comprises the steps of: transmitting an aperiodic channel state information (CSI) report; receiving a rank indicator and a first precoder indicator from a base station; acquiring a second precoder indicator included in the most recent aperiodic CSI report which corresponds to the rank indicator in the aperiodic CSI reports transmitted by the user equipment; and receiving a signal using the first precoder indicator and the second precoder indicator. According to an embodiment of the present specification, precoding-related information can be effectively transmitted or received. | 03-10-2016 |
Patent application number | Description | Published |
20090097447 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - A method is provided for allocating resources of a control channel in a mobile communication system using Orthogonal Frequency Division Multiplexing (OFDM). The method includes, when a time index and a frequency index of available Resource Elements (REs) are defined as l and k, respectively, dividing the available REs in a two-dimensional structure of (k, l); and time-first-allocating each RE to a plurality of RE groups while increasing the time index l for each frequency index k from an initial value up to a predetermined range. | 04-16-2009 |
20100322174 | METHOD AND APPARATUS FOR A MOBILE SELECTION BASED INITIAL ACCESS SCHEME IN A MULTICARRIER SYSTEM - A method and apparatus for initial access of a mobile device in multi-carrier system. A base station transmits initial access resource information about the entire system band to the mobile device through a specific carrier to which the mobile device tries initial access. The mobile device determines an uplink initial access band by using received initial access resource information. The base station enables initial access through a predefined downlink response band. | 12-23-2010 |
20110038303 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CONTROL CHANNEL - A method and apparatus for transmitting/receiving control channels through a wireless backhaul in an OFDM-based communication system including relay nodes is provided. A method for transmitting a control channel includes arranging control resources for at least one receiver; sorting the control resources and null resources in a control channel region; rearranging the control resources to be distributed and the null resources to be adjacent to the distributed control resources; and mapping the control resources and null resources to the control channel region. | 02-17-2011 |
20110044391 | METHOD AND APPARATUS FOR CONFIGURING CONTROL CHANNEL IN OFDM SYSTEM - A control channel configuration method and apparatus is provided for supporting Inter-Cell Interference Coordination (ICIC) in an OFDM-based communication system. The control channel configuration method includes determining a Resource Block (RB) to be used for configuring control channels; configuring the control channels by mapping the control channels in a data channel region within the RB; and transmitting the configured control channels, wherein configuring the control channels includes mapping the control channels in units of Resource Element Groups (REGs) formed by binding one or more Resource Elements (REs) in a time domain-preferred allocation manner within the same RB. | 02-24-2011 |
20110085506 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING MULTI-USER CONTROL CHANNELS IN A WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE ANTENNAS - Provided are a method and apparatus for transmitting and receiving multi-user control channels through a data channel region in a wireless communication system using multiple antennas. Further provided is a definition of a new search space for control channel candidates. In the transmitting method, a base station forms control channels for a plurality of user equipment each of which is composed of at least one resource block, performs a mapping for the control channels by dividing a space of the same transmission region in a data channel region of a sub-frame, and then multiplexes the control channels with data channels in the data channel region of the sub-frame and to transmit the multiplexed control channels. | 04-14-2011 |
20110243059 | APPARATUS AND METHOD FOR INTERLEAVING DATA IN A RELAY PHYSICAL DOWNLINK CONTROL CHANNEL (R-PDCCH) - A wireless network comprising a first base station operable to communicate with mobile stations and a plurality of relay stations for providing bi-directional communication between the first base station and a plurality of mobile stations. The first base station transmits a relay physical downlink control channel (R-PDCCH) in the downlink to the plurality of relay stations. The R-PDCCH comprises: i) a first search space comprising downlink (DL) grants associated with the plurality of relay stations; and ii) a second search space comprising uplink (UL) grants associated with the plurality of relay stations. | 10-06-2011 |
20110249582 | CHANNEL STATE INFORMATION REQUEST/FEEDBACK METHOD AND APPARATUS - A Channel State Information (CSI) request/feedback method and apparatus for a wireless communication system supporting carrier aggregation or bandwidth extension are provided. A base station sets a CSI request field of an Uplink (UL) grant for scheduling UL transmission on a UL Component Carrier (CC) corresponding to a Downlink (DL) CC of which CSI is requested, to a request value. The UL grant is transmitted to a terminal. | 10-13-2011 |
20110249633 | METHOD OF TRANSMITTING AND RECEIVING CONTROL INFORMATION BASED ON SPATIAL-MULTIPLEXING GAIN - A control information transmission and reception method based on a spatial-multiplexing gain, are provided. The control information may be transmitted by obtaining the spatial-multiplexing gain using an E-PDCCH region, and thus, a transmission efficiency of the control information may be improved. The common control information used for decoding the E-PDCCH may be transmitted via a PDCCH, and thus, a base station supporting both a general terminal and an enhanced terminal may effectively transmit the control information. Information associated with an indicator indicating whether the E-PDCCH is to be used during a subsequent resource allocation period may be transmitted, and thus, whether decoding with respect to the E-PDCCH is to be performed during the subsequent allocation period may be determined. | 10-13-2011 |
20110261767 | METHOD AND APPARATUS FOR ALLOCATING A CONTROL CHANNEL RESOURCE OF A RELAY NODE IN A BACKHAUL SUBFRAME - A method and apparatus for allocating control channels of a relay within a backhaul subframe in a wireless communication system is provided. The method for allocating control channel resources includes grouping relays according to channel conditions; transmitting resource group information on the same resource group allocated to use the same transmission mode for the relays belonging to the same relay group; transmitting a control channel message to the relays according to the allocated resource; and transmitting data to the relays according to the control channel message. | 10-27-2011 |
20110261769 | METHOD AND APPARATUS FOR CONTROLLING INTER-CELL INTERFERENCE OF CONTROL CHANNELS IN OFDM-BASED HIERARCHICAL CELLULAR SYSTEM - A method and apparatus for controlling inter-cell interference of control channels of hierarchical cells in a hierarchical cellular system based on Orthogonal Frequency Division Multiplexing (OFDM) are provided. The inter-cell interference control method of a base station in a hierarchical cellular system based on Orthogonal Frequency Division Multiplexing (OFDM) includes transmitting a broadcast channel, including information on an available bandwidth that is a part of an entire bandwidth, to a terminal, transmitting a control channel including data channel allocation information for the entire bandwidth to the terminal, and transmitting a data channel, as informed by the data channel allocation information, to the terminal. The inter-cell interference control method and apparatus support cooperative transmission of hierarchical cells while maintaining both backward compatibility and forward compatibility. | 10-27-2011 |
20110268062 | RESOURCE MAPPING METHOD AND APPARATUS OF OFDM SYSTEM - A method and apparatus for allocating resource between uplink ACK/NACK channel and downlink control channel supporting spatial multiplexing in an OFDM-based wireless communication system which configures uplink ACK/NAK channel implicitly using reference signals for discriminating among resource allocation spaces and physical channel resource. The method is capable of multiplexing the uplink ACK/NACK channel associated with the control channel extended by spatial multiplexing into the uplink ACK/NACK channel resource which does not support spatial multiplexing. | 11-03-2011 |
20110310829 | METHOD AND APPARATUS FOR GROUPING CONTROL CHANNEL RESOURCE IN MOBILE COMMUNICATION SYSTEM - A method for grouping a control channel resource in an Orthogonal Frequency Division Multiplexing based mobile communication system for adjusting inter-cell interference and an apparatus performing the same are disclosed. Inter-cell inference used between cells or base stations is controlled or distributed to secure reception of a control channel in a heterogeneous system, and interference may be efficiently controlled through coordination of resource groups by cells. The method and apparatus are equally applicable when resources of backhaul transmission channel of a relay cell in a cell are grouped. | 12-22-2011 |
20110319068 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CSI IN CELLULAR COMMUNICATION SYSTEM SUPPORTING CARRIER AGGREGATION - A Channel Status Information (CSI) transmission method and apparatus of a terminal are provided for use in a wireless communication system. In the wireless communication system supporting carrier aggregation, the terminal transmits the CSIs of component carriers without conflict of their transmission time points, resulting in an improvement of system performance. In a case where the transmission time points are determined to overlap unavoidably, the terminal transmits the CSI as compressed. | 12-29-2011 |
20120014333 | INTER-CELL INTERFERENCE COORDINATION METHOD AND APPARATUS FOR AN OFDM-BASED HETEROGENEOUS CELLULAR SYSTEM - An inter-cell interference coordination method and apparatus is provided for a heterogeneous network system based on Orthogonal Frequency Division Multiplexing (OFMD) communication. The inter-cell interference coordination method and apparatus exchanges two different types of inter-cell interference coordination messages between base stations to adaptively use the frequency division and time division schemes, thereby coordinating inter-cell interference of control channels transmitted randomly in distributed manner. | 01-19-2012 |
20120057523 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING BACKHAUL SUBFRAME CHANNEL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for transmitting a backhaul sub frame channel of a base station in a wireless communication system. The method for transmitting a backhaul sub frame channel according to one embodiment of the present invention comprises: creating a downlink relay control channel by coding downlink relay control information that is transmitted to a relay; allocating the created downlink relay control channel to a first slot of a semi-static resource region that is allocated to the relay; and transmitting, to the relay, a backhaul sub frame to which the channel is allocated. Compared to existing control channel transmission techniques, the present invention can minimize overheads. Moreover, the present invention also reduces control channel resources required during retransmission and for the transmission of multiple backhaul subframes. | 03-08-2012 |
20120113812 | RESOURCE MANAGEMENT SYSTEM AND METHOD FOR INTER-CELL INTERFERENCE COORDINATION IN WIRELESS COMMUNICATION SYSTEM - A resource management system and method for inter-cell interference coordination and channel information feedback in a mobile communication system are provided. The resource management method includes transmitting an Almost Blank Subframe (ABS) set from a first base station to a second base station, transmitting a reference resource configuration set for channel measurement and a Radio Link Monitor/Radio Resource Measurement (RLM/RRM) for radio resource measurement from the second base station to a terminal, and scheduling, at the second base station, the terminal in a subframe selected from the ABS set. | 05-10-2012 |
20120176956 | COMMUNICATION SYSTEM WITH RELAYS AND COMMUNICATION THEREIN VIA MULTI-CARRIERS - A system and method is for transmitting multi-carriers in a wireless communication system with a relay are provided. The method includes configuring each of downlink carriers that form the multi-carriers as at least one general sub-frame and at lest one backhaul sub-frame; determining one of the downlink carriers that has a maximum number of backhaul sub-frames, as a primary carrier, and other downlink carriers as sub-carriers; and altering a backhaul sub-frame into a general sub-carrier in the sub-carrier, in response to a general sub-frame of the primary carrier. | 07-12-2012 |
20120213170 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method and an apparatus for transmitting Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement (ACK/NACK) are provided. The HARQ ACK/NACK transmission method includes receiving a Physical Downlink Shared Channel (PDSCH) in a subframe of a first cell, identifying an ACK subframe for transmitting HARQ ACK/NACK corresponding to the PDSCH, and transmitting the HARQ ACK/NACK in the identified ACK subframe of a second cell. | 08-23-2012 |
20120257554 | METHOD AND APPARATUS FOR DEFINING TRANSCEIVING TIMING OF A PHYSICAL CHANNEL IN A TDD COMMUNICATION SYSTEM WHICH SUPPORTS CROSS-CARRIER SCHEDULING - The present invention relates to a method for defining, in a TDD wireless communication system in which broadband is configured by means of carrier aggregation, transceiving timing for a data channel and a control channel when cross-carrier scheduling is implemented. | 10-11-2012 |
20120320846 | EXTENSION OF PHYSICAL DOWNLINK CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for a User Equipment (UE) to receive over a first set of resources a Physical Downlink Control CHannel (PDCCH) of a first type including Control Channel Elements (CCEs) of a first type, to receive over a second set of resources a PDCCH of a second type including CCEs of a second type, and to determine a resource for transmitting an acknowledgement signal in response to detecting the PDCCH of the first type or in response to detecting the PDCCH of the second type. | 12-20-2012 |
20130089067 | METHOD AND APPARATUS FOR OPERATING MULTI-BAND AND MULTI-CELL - Disclosed are a method and an apparatus for operating multi-band and multi-cell. An Enhanced Node B (eNB) transmits a synchronization channel and a broadcasting channel for narrow-band user equipments (UEs) through a first band narrower than a system band, the first band being located in a center band of the system band, and transmits a control channel for scheduling a data channel for a first narrow-band UE which is one of the narrow-band UEs through a second band equal to or wider than the first band, the second band not overlapping the first band within the system band. The first band is designed to be matched to a band where the synchronization channel and the broadcasting channel of a host cell using an entire system band are transmitted. | 04-11-2013 |
20130094442 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS COMMUNICATION SYSTEM - A User Equipment (UE) in a wireless communication system using a Coordinated Multi-Point transmission/reception (CoMP) scheme receives Downlink Control Information (DCI) including CoMP control information, determines a starting position of a data channel on wireless resources, based on starting position information of a data channel included in the CoMP control information and used in each of a plurality of cells, and receives data from the plurality of cells starting from the determined starting position. | 04-18-2013 |
20130107822 | SEARCH PROCESS FOR PHYSICAL DOWNLINK CONTROL CHANNELS IN A COMMUNICATION SYSTEM | 05-02-2013 |
20130107832 | FEEDBACK METHOD AND APPARATUS FOR COOPERATIVE MULTI-POINT COMMUNICATION IN COMMUNICATION SYSTEM | 05-02-2013 |
20130121249 | Method and apparatus for transmitting system information in a mobile communication system - A method and apparatus are provided for transmitting system information in a mobile communication system. The method includes configuring system information including first antenna configuration information and second antenna configuration information, and broadcasting the system information. The first antenna configuration information includes information about a number of antennas of a base station. | 05-16-2013 |
20130155974 | COMMUNICATION SUPPORT FOR LOW CAPABILITY DEVICES - Methods and apparatuses for transmitting and receiving signaling, by a User Equipment (UE) with reduced processing capabilities, to conserve power are provided. A method for transmitting from a network a Physical Downlink Shared CHannel (PDSCH) to a first User Equipment (UE) from a first class of UEs or to a second UE from a second class of UEs, includes transmitting a PDSCH to the first UE using a first bandwidth unit; and transmitting a PDSCH to the second UE using a second bandwidth unit, wherein the second bandwidth unit is smaller than the first bandwidth unit. | 06-20-2013 |
20130163569 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING REFERENCE SIGNAL TRANSMISSION INFORMATION IN CELLULAR RADIO COMMUNICATION SYSTEM USING COOPERATIVE MULTI-POINT SCHEME - An apparatus and method for transmitting/receiving reference signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme is provided. In the reference signal transmission information transmission method, a Central Control Apparatus (CCA) transmits measurement set information related to a measurement set including at least one reference signal resource unit through which a reference signal is transmitted, and reference signal transmission timing information including information related to a timing at which the reference signal is transmitted to a User Equipment (UE), and transmits reference signal non-transmission timing information including information related to a timing at which the reference signal is not transmitted through the reference signal resource unit to the UE. | 06-27-2013 |
20130178220 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DOWNLINK DATA CHANNEL SIGNAL TRANSMISSION INFORMATION IN CELLULAR RADIO COMMUNICATION SYSTEM USING COOPERATIVE MULTI-POINT SCHEME - An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (COMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE. | 07-11-2013 |
20130195041 | METHOD AND APPARATUS FOR SCHEDULING COMMUNICATION FOR LOW CAPABILITY DEVICES - Methods and apparatus are described for a User Equipment (UE) with reduced processing capabilities (e.g., Machine Type Communication (MTC) UE) to transmit and receive signaling are provided. The Downlink Control Information (DCI) formats scheduling a transmission of a Physical Uplink Shared CHannel (PUSCH) or a reception of a Physical Downlink Shared CHannel (PDSCH) are designed and have a smaller size than respective DCI formats for conventional UEs. DCI formats scheduling PUSCHs to or PDSCHs for a group of MTC UEs are also designed and can have a same size as DCI formats scheduling PUSCH or PDSCH for an individual MTC UE. | 08-01-2013 |
20130215819 | METHOD AND APPARATUS FOR ALLOCATING A CONTROL CHANNEL RESOURCE OF A RELAY NODE IN A BACKHAUL SUBFRAME - A method and apparatus for allocating control channels of a relay is provided. The method includes generating resource block assignment information related to resource blocks allocated to the relay; transmitting resource information comprising the resource block assignment information; and transmitting a control channel according to the resource information. | 08-22-2013 |
20130294366 | REFERENCE SIGNALS AND COMMON SEARCH SPACE FOR ENHANCED CONTROL CHANNELS - Methods and apparatuses for a User Equipment (UE) to receive signaling of UE-common Downlink Control Information (DCI) in a set of Physical Resource Blocks (PRBs) over a Transmission Time Interval (TTI) are provided. The UE demodulates UE-common DCI using a Reference Signal (RS) that is scrambled by a UE-common scrambling sequence. The UE may assume that RS having a same precoding is transmitted in the set of PRBs over different TTIs. The UE may determine the scrambling sequence implicitly from an identity of a point transmitting the UE-common DCI or explicitly by higher layer signaling. The UE may determine the PRBs of UE-common DCI transmission by broadcast signaling or by higher layer signaling. | 11-07-2013 |
20130294389 | METHOD OF TRANSMITTING AND RECEIVING CONTROL INFORMATION BASED ON SPATIAL-MULTIPLEXING GAIN - A control information transmission and reception method based on a spatial-multiplexing gain, are provided. The control information may be transmitted by obtaining the spatial-multiplexing gain using an E-PDCCH region, and thus, a transmission efficiency of the control information may be improved. The common control information used for decoding the E-PDCCH may be transmitted via a PDCCH, and thus, a base station supporting both a general terminal and an enhanced terminal may effectively transmit the control information. Information associated with an indicator indicating whether the E-PDCCH is to be used during a subsequent resource allocation period may be transmitted, and thus, whether decoding with respect to the E-PDCCH is to be performed during the subsequent allocation period may be determined | 11-07-2013 |
20130301492 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FRAME CONFIGURATION INFORMATION IN TDD WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting Time Division Duplexing (TDD) configuration information by an evolved Node B (eNB) in a TDD wireless communication system are provided. The method includes determining a changed TDD configuration indicating a transmission direction of a plurality of sub-frames constituting a frame; generating a system information element including dynamic TDD configuration information indicating the changed TDD configuration; transmitting a system information block including the dynamic TDD configuration information; and sending a Media Access Control (MAC) message including information indicating whether a change in TDD configuration is activated. | 11-14-2013 |
20130336300 | MOBILE COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF - A data transmission method and apparatus is provided for transmitting UL grant or ACK/NACK at flexible subframes in a Time Division Duplex (TDD) system. The data transmission method of a base station according to the present invention includes configuring subframes irrelevant to Hybrid Automatic Repeat reQuest (HARQ) process as flexible subframes; scheduling uplink transmission at the flexible subframes with uplink grant; receiving uplink data transmitted by a terminal at the flexible subframes as scheduled; and transmitting, when decoding the uplink data fails, HARQ acknowledgement/negative acknowledgement (ACK/NACK) or uplink grant to request retransmission of the uplink data. The data transmission method of the present invention is capable of utilizing flexible subframes for uplink transmission without influencing the uplink HARQ process associated with the downlink subframes configured as flexible subframes. | 12-19-2013 |
20130343333 | RESOURCE MAPPING METHOD AND APPARATUS OF OFDM SYSTEM - A method and apparatus for allocating resource between uplink ACK/NACK channel and downlink control channel supporting spatial multiplexing in an OFDM-based wireless communication system which configures uplink ACK/NAK channel implicitly using reference signals for discriminating among resource allocation spaces and physical channel resource. The method is capable of multiplexing the uplink ACK/NACK channel associated with the control channel extended by spatial multiplexing into the uplink ACK/NACK channel resource which does not support spatial multiplexing. | 12-26-2013 |
20140064214 | ADAPTING A NUMBER OF AGGREGATION LEVELS FOR CONTROL CHANNEL ELEMENTS - Methods and apparatus are described for a base station to transmit and for a User Equipment (UE) to detect a Physical Downlink Control CHannel (PDCCH) conveying a Downlink Control Information (DCI) format scheduling data reception or data transmission by the UE. The base station transmits a PDCCH and the UE decodes candidate PDCCHs using a number of Control Channel Elements (CCEs) from a first set of CCEs for a first DCI format and using a number of CCEs from a second set of CCEs for a second DCI format depending on a maximum code rate for the DCI format transmission or on a scheduling bandwidth. | 03-06-2014 |
20140071915 | MULTIPLEXING RESOURCE ELEMENT GROUPS FOR CONTROL CHANNEL ELEMENTS OF CONTROL CHANNELS - Methods and apparatus are described for forming Control Channel Elements (CCEs) from Resource Element Groups (REGs) that are located in one or more Physical Resource Block (PRB) pairs from a set of PRB pairs, for determining a first symbol in a Transmission Time Interval (TTI) for a Physical Downlink Shared Channel (PDSCH), and for determining whether the PDSCH includes all PRB pairs indicated by a respective PDCCH scheduling the PDSCH. | 03-13-2014 |
20140071935 | MULTIPLEXING RESOURCE ELEMENT GROUPS FOR CONTROL CHANNEL ELEMENTS OF CONTROL CHANNELS - Methods and apparatus are described for forming Control Channel Elements (CCEs) from Resource Element Groups (REGs) that are located in one or more Physical Resource Block (PRB) pairs from a set of PRB pairs, for determining a first symbol in a Transmission Time Interval (TTI) for a Physical Downlink Shared Channel (PDSCH), and for determining whether the PDSCH includes all PRB pairs indicated by a respective PDCCH scheduling the PDSCH. | 03-13-2014 |
20140086113 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL CHANNEL IN DYNAMIC TIME DIVISION DUPLEX SYSTEM - A method and system for transmitting and receiving a control channel in a dynamic Time Division Duplex (TDD) system. Upon receiving a control signal DCI for a first Hybrid Automatic Retransmission Request (HARQ) process from a Node B, a User Equipment (UE) determines whether TDD configuration is changed in a radio frame to which the DCI is to be applied. If the TDD configuration is changed, the UE determines from the DCI whether retransmission for the first HARQ process is required. If the retransmission required, the UE interprets some bits of a Modulation and Coding Scheme (MCS) field in the DCI as a target HARQ process index for the first HARQ process. As a result, the most is made of available UL data channel resources, contributing to an increase in the capacity of the dynamic TDD system and a reduction in packet delays of the UE. | 03-27-2014 |
20140086127 | METHOD AND APPARATUS FOR USING A PLURALITY OF CELLS IN COMMUNICATION SYSTEM - Methods and apparatus for using a plurality of cells by an evolved NodeB (eNB) in a communication system are provided. A first eNB, which manages a first cell and is providing a communication service to a User Equipment (UE) located in the first cell, determines to provide the communication service to the UE together with a second cell of a second eNB, which neighbors the UE. A cell addition request message, making a request for aggregation of the first cell and the second cell, is transmitted to the second eNB to provide the communication service. When a cell addition response message, accepting the request for aggregation of the first cell and the second cell, is received from the second eNB, a cell activation request message, making a request for activation of the second cell, is transmitted to the second eNB. | 03-27-2014 |
20140092788 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA IN MOBILE COMMUNICATION SYSTEM - A data transceiving method of a terminal in a mobile communication system is provided. The data transceiving method includes receiving a Time Division Duplex (TDD) configuration modification message including TDD configuration modification time information from a base station, modifying a TDD configuration based on the TDD configuration modification time information, transmitting, to the base station, at least one of a data channel and a response channel by taking into consideration a transmission period between the data channel and the response channel. and the transmission period is determined for mapping first subframes for transmitting at least one of a data channel and a response channel before the TDD configuration modification, onto second subframes for transmitting at least one of a data channel and a response channel after the TDD configuration modification. | 04-03-2014 |
20140161094 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK HYBRID AUTOMATIC REPEAT REQUEST INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus and for transmitting downlink Hybrid Automatic Repeat request (HARQ) information in a wireless communication system are provided. In the method, at least one Physical Resource Block (PRB) for transmitting a Physical HARQ Indicator Channel (PHICH) signal is set among all PRBs forming an available frequency band. A PHICH resource is determined within the set at least one PRB. A PHICH signal is transmitted using the determined PHICH resource. | 06-12-2014 |
20140247800 | METHOD AND DEVICE FOR MONITORING FREQUENCY DOMAIN-BASED WIRELESS LINK IN WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a technique for radio link monitoring in a wireless communication system, and to operation procedures of the base station and user equipment and a method for radio link quality evaluation on the basis of the technique. In the method, the user equipment divides the downlink channel bandwidth into multiple frequency ranges, measures channel states for each frequency range, and evaluates the radio link quality based on channel state measurement results. Thereafter, the user equipment sends frequency range quality information to the base station, which may then utilize the same for downlink resource allocation. Hence, it is possible to solve the problem of the existing scheme wherein the user equipment enters the physical layer problem detection state or the radio link failure state although a frequency range usable for service provisioning is present within the downlink channel bandwidth. | 09-04-2014 |
20140286176 | APPARATUS AND METHOD FOR RADIO LINK MONITORING IN A WIRELESS COMMUNICATION SYSTEM - An apparatus and method for radio link monitoring in a wireless communication system are provided, in which a transmission point communicating with a network where a Base Station (BS) and at least one Remote Radio Head (RRH) coexist within a cell receives Reference Signal Configuration Information (RSCI) from the network to which the transmission point belongs, receives RSs of at least one RS type indicated by the received RSCI from the BS and the at least one RRH that coexist within the cell, and performs radio link monitoring using the received RSs of the at least one RS type. | 09-25-2014 |
20140286263 | METHOD AND DEVICE FOR SENDING AND RECEIVING A REFERENCE SIGNAL - The present invention relates to a method for sending and receiving a reference signal for a backhaul subframe in a wireless communication system in which a relay is present and also to a device therefor, constituted in such a way that common reference signals for a plurality of receiving devices and reference signals dedicated to separate receiving devices are allocated dispersed in a subframe, and the common reference signals and the dedicated reference signals are generated and are sent and received via the subframe. The present invention can improve the channel estimation performance for subframes in a wireless communication system. In this way, communications efficiency in wireless communication systems can be improved. | 09-25-2014 |
20140307597 | METHOD AND APPARATUS FOR CONTROLLING TRANSCEIVING OF PHYSICAL CHANNELS IN TIME DIVISION DUPLEX COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for controlling the transceiving of physical channels in a time division duplex (TDD) communication system. The method comprises: a step of determining whether a point of time of HARQ ACK/NACK transmission in component carrier #1 and a point of time of the transmission of another signal in component carrier #2 coupled with the component carrier #1 are overlapped with each other; and a step of preferentially transmitting or receiving a HARQ ACK/NACK signal when the points of time of transmission are overlapped with each other. Thus, the method and the apparatus of the present invention may prevent transceiving error or transmission delay of data or a control channel. | 10-16-2014 |
20140321396 | CHANNEL STATE INFORMATION REQUEST/FEEDBACK METHOD AND APPARATUS - Methods and apparatuses are provided for Channel State Information (CSI) feedback. An Uplink (UL) grant is received from a Node B. Information included in the UL grant is identified. If the information is mapped to at least one DownLink (DL) Component Carrier (CC) based on configuration information relating to at least one set including the at least one DL CC, at least one CSI corresponding to the at least one DL CC is generated. The generated at least one CSI is transmitted to the Node B. | 10-30-2014 |
20140341089 | Interference measurement method and apparatus for controlling inter-cell interference in wireless communication system - The present disclosure relates to an interference measurement method and apparatus for controlling inter-cell interference in a Time Division Duplex (TDD) radio communication system and, in particular, to a technology for a base station to configure a radio frame capable of controlling interference with adjacent base stations and to measure interference based on the radio frame configured as such. In an embodiment of the present disclosure, the first base station sends the second base station the first radio frame configuration information and the second radio frame configuration information including a subset of uplink subframes of the first radio frame configuration. The second base station configures the intersection of uplink subframes of the first and second radio frame configurations into the first interference measurement subframe set and difference of the sets of the subframes of the respective first and second radio frame configurations into the second interference measurement subframe set. The second base station measures uplink interference signals of the neighbor cell during the first interference measurement subframe set and the downlink interference signal of the neighbor cell during the second interference measurement set and transmits the measurement result to the first base station. Through this method, the base station is capable of predicting uplink coverage of the neighbor cell during the first interference measurement subframe set and the downlink coverage of the neighbor cell during the second interference measurement subframe set for controlling inter-cell interference. | 11-20-2014 |
20140348144 | TERMINAL SIGNAL TRANSMISSION TIMING RANDOMISATION METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a terminal signal transmission timing randomisation method and device in a wireless communication system, and the terminal signal transmission method in a wireless communication system of the present disclosure comprises the steps of: receiving, from a base station, setting information for randomising transmission timing with respect to a signal transmitted by a terminal; determining the transmission timing for the signal in accordance with the setting information; and transmitting the signal to the base station in accordance with the determined transmission timing. | 11-27-2014 |
20140376482 | METHOD AND DEVICE FOR TRANSMITTING SOUNDING REFERENCE SIGNAL IN COOPERATIVE COMMUNICATION SYSTEM - Disclosed is a method and device for transmitting a sounding reference signal (SRS) in a cooperative communication system. The method comprises the steps of: receiving, from a macro base station, SRS resource information indicating transmission resources of an SRS to be transmitted by a user equipment (UE); transmitting the SRS and uplink data on the basis of a UE-specific SRS subframe configuration included in the SRS resource information when the SRS resource information includes information on the UE-specific SRS subframe configuration; and transmitting the SRS and the uplink data on the basis of a pre-stored cell-specific SRS subframe configuration when the SRS resource information does not include the information on the UE-specific SRS subframe configuration. When a destination of the SRS to be transmitted by the UE is selected as a base station related to the macro base station, the SRS resource information includes information on the UE-specific SRS subframe configuration of the base station selected as the destination of the SRS. | 12-25-2014 |
20150016291 | METHOD AND APPARATUS FOR MEASURING MU-MIMO INTERFERENCE IN MOBILE COMMUNICATION SYSTEM - One or more embodiments discloses a method of measuring interference by an evolved NodeB and an eNB device. The method includes configuring one or more first type interference measurement resources in a User Equipment (UE). The method also includes transmitting signals for a plurality of UEs within a cell range of the eNB to the one or more first type interference measurement resources. The method also includes receiving channel status information generated in accordance with a signal received in the one or more first type interference measurement resources. | 01-15-2015 |
20150023231 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL RELATED TO TERMINAL THAT SUPPORTS HALF DUPLEX TRANSMISSION IN MOBILE COMMUNICATION SYSTEM - Disclosed are a method and an apparatus for transceiving a channel related to a terminal that supports half duplex transmission in a mobile communication system. The terminal receives scheduling information on multi-carriers having different TDD configurations from a base station, determines whether to receive a downlink channel for a plurality of different subframes of each multi-carrier including at least one special subframe, and transceives a channel to/from the base station depending on whether the downlink channel is received or not. | 01-22-2015 |
20150043673 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING FEEDBACK INFORMATION IN MOBILE COMMUNICATION SYSTEM BASED ON 2 DIMENSIONAL MASSIVE MIMO - A feedback information transmission/reception method for use in a mobile communication system is provided. The feedback information transmission method includes receiving configuration information on at least two reference signals and feedback configuration information for use in generating feedback information based on the at least two reference signals from a base station, receiving the at least two reference signals from the base station, measuring the at least two reference signals received, generating the feedback information based on the measurement result according to the feedback configuration information, and transmitting the feedback information to the base station. | 02-12-2015 |
20150085802 | EXTENSION OF PHYSICAL DOWNLINK CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for the transmission of physical downlink control signaling. In one method, a User Equipment (UE) receives information associated with a physical resource block (PRB) for enhanced physical downlink control channel (EPDCCH) from a base station. Based on either first information received on physical control format indicator channel (PCFICH) or second information received on higher layer signaling, the UE determines a starting orthogonal frequency division multiple (OFDM) symbol on which EPDCCH transmission starts. The UE receives control information on the EPDDCH based on the information associated with the PRB and the determined starting OFDM symbol. | 03-26-2015 |
20150117302 | METHOD AND APPARATUS FOR ALLOCATING A CONTROL CHANNEL RESOURCE OF A RELAY NODE IN A BACKHAUL SUBFRAME - A method and apparatus for receiving control channel resources of a relay by the relay is provided. The method includes receiving resource information including a resource block assignment information related to resource blocks allocated to the relay; and receiving control channel according to the resource information. | 04-30-2015 |
20150163776 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated based on a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of a plurality of resource elements (REs) in each of the REGs depends on an index of an orthogonal frequency division multiplexing (OFDM) symbol and a number of configured reference signals. | 06-11-2015 |
20150163777 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated based on a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of the REGs in a physical resource block (PRB) on an orthogonal frequency division multiplexing (OFDM) symbol depends on an index of the OFDM symbol and a number of configured reference signals. | 06-11-2015 |
20150163778 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A number of a plurality of resource elements (REs) in each of the REGs depends on an index of an orthogonal frequency division multiplexing (OFDM) symbol and a number of configured reference signals. A number of the REGs in a physical resource block (PRB) on an OFDM symbol depends on the index of the OFDM symbol and the number of configured reference signals. | 06-11-2015 |
20150163787 | METHOD AND APPARATUS FOR ALLLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs) which is not assigned to a physical channel format indication channel (PCFICH) or a physical hybrid automatic repeat request indicator channel (PHICH). The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). A physical resource block (PRB) on a second orthogonal frequency division multiplexing (OFDM) symbol in a first slot in a subframe includes three REGs if one or two cell-specific reference signals are configured, and the PRB on the second OFDM symbol of the first slot in the subframe includes two REGs if four cell-specific reference signals are configured. | 06-11-2015 |
20150201407 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES OF A CONTROL CHANNEL IN A MOBILE COMMUNICATION SYSTEM USING ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING - Methods and apparatuses are provided for wireless communication. Control symbols are mapped to a plurality of resource element groups (REGs), which are not assigned to a physical channel format indication channel (PCFICH) or a Physical hybrid automatic repeat request indicator channel (PHICH). The REGs are allocated in a time first manner. The mapped control symbols are transmitted on a packet dedicated control channel (PDCCH). Each of the REGs in a first orthogonal frequency division multiplexing (OFDM) symbol of a first slot in a subframe comprises two resource elements (REs) for transmission of a cell-specific reference signal and four REs for transmission of a control signal. | 07-16-2015 |
20150223240 | MOBILE COMMUNICATION SYSTEM AND CHANNEL TRANSMISSION/RECEPTION METHOD THEREOF - A method and an apparatus for transmitting Hybrid Automatic Repeat reQuest (HARQ) Acknowledgement/Negative Acknowledgement (ACK/NACK) are provided. The HARQ ACK/NACK transmission method includes receiving a Physical Downlink Shared Channel (PDSCH) in a subframe of a first cell, identifying an ACK subframe for transmitting HARQ ACK/NACK corresponding to the PDSCH, and transmitting the HARQ ACK/NACK in the identified ACK subframe of a second cell. | 08-06-2015 |
20150230246 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN CARRIER AGGREGATION SYSTEM - A method and apparatus for allocating resources in a base station (BS) in a carrier aggregation (CA) system is provided. The method and apparatus includes configuring a first cell and a second cell for a first user equipment (UE), identifying at least one second subframes of the first cell, the at least one second subframe being associated with feedback information to be received in a first subframe of the first cell, and at least one third subframes of the second cell, determining whether there is a downlink (DL) data transmission in the at least one third subframe of the second cell, and determining to allocate the other frequency resources, which are other than a frequency resource used for transmission of the feedback information in the first subframe, to a second UE, if there is no DL data transmission in the at least one third subframe of the second cell. | 08-13-2015 |
20150236765 | APPARATUS AND METHOD FOR CHANNEL FEEDBACK IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A method and apparatus for a channel feedback by a signal transmitting device in a Multiple Input Multiple Output (MIMO) system are provided. The method includes transmitting a pilot in which a compression rate is reflected to a signal receiving device; receiving channel related information on a compressed channel from the signal receiving device; and performing a precoding based on the channel related information. The apparatus includes a transmitting unit configured to transmit a pilot to which a compression rate is reflected to a signal receiving device; a receiving unit configured to receive channel related information on a compressed channel from the signal receiving device; and a precoding unit configured to perform a precoding based on the channel related information. | 08-20-2015 |
20150256239 | METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK ABOUT CHANNEL HAVING SPATIAL CORRELATION - A method for a data signal on channels having spatial correlations by a Base Station (BS) is provided. The method includes estimating the spatial correlations of the channels, selecting a part of the channels based on a result of the estimation and transmitting a signal for channel estimation on the selected partial channels, and receiving channel estimation information estimated based on the signal from a User Equipment (UE) and generating a data signal to be transmitted to the UE on the channels using the channel estimation information. | 09-10-2015 |
20150256244 | APPARATUS AND METHOD FOR CHANNEL FEEDBACK IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - An apparatus and a method for feeding a channel back in a wireless communication system using multiple input multiple output antennas (MIMO) are provided. The method includes receiving a signal from a transmitter and configuring a channel matrix for the received signal, configuring a basis transformed sparse channel using a sparsifying basis function with respect to the channel matrix, selecting a channel part to be fed back to the transmitter from the transformed sparse channel, and creating a codebook by quantizing the selected channel part, and feeding a codebook index corresponding to the created codebook back to the transmitter. | 09-10-2015 |
20150270918 | METHOD AND DEVICE FOR DECODING RECEPTION SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method of decoding a reception signal having an interference signal included therein by User Equipment (UE) in a wireless communication system is provided. The method includes receiving the reception signal having the interference signal included therein, identifying at least one of transmission parameters for the interference signal, identifying a modulation scheme of the interference signal and reception strength of the interference signal using the identified transmission parameter, removing the interference signal from the reception signal based on the identified modulation scheme and the identified reception strength of the interference signal, and decoding the reception signal from which the interference signal is removed. | 09-24-2015 |
20150270939 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN DEVICE-TO-DEVICE COMMUNICATION - A method and an apparatus for generating a sequence including a demodulation reference signal (DM RS) and a preamble in device-to-device (D2D) communications are provided. The method includes obtaining, by a controller of an apparatus, a synchronization identify of a synchronization signal used for the D2D communication, obtaining a group identify of a communication group where a terminal belongs, generating a DM RS sequence for the D2D communication based on at least one of the synchronization identity and the group identity, mapping the DM RS sequence to predetermined symbol positions in a subframe, and transmitting the DM RS sequence from the terminal through the subframe. | 09-24-2015 |
20150334690 | EXTENSION OF PHYSICAL DOWNLINK CONTROL SIGNALING IN A COMMUNICATION SYSTEM - Methods and apparatus are provided for the transmission of physical downlink control signaling. In one method, a User Equipment (UE) receives information associated with a physical resource block (PRB) for enhanced physical downlink control channel (EPDCCH) from a base station. Based on either first information received on physical control format indicator channel (PCFICH) or second information received on higher layer signaling, the UE determines a starting orthogonal frequency division multiple (OFDM) symbol on which EPDCCH transmission starts. The UE receives control information on the EPDDCH based on the information associated with the PRB and the determined starting OFDM symbol. | 11-19-2015 |
20150341814 | METHOD AND DEVICE FOR MEASURING INTERFERENCE IN COMMUNICATION SYSTEM - A method and a device for measuring interference in a communication system are provided. The method includes measuring interference in a base station of a communication system, in which one or more antenna groups are arranged at different positions in a single cell, includes the steps of determining a reception antenna group which is one of the one or more antenna groups that transmits a signal other than an interference signal to a terminal, determining a reference signal in order to measure the strength of the signal transmitted by the reception antenna group, a step of determining a wireless resource so as to measure the interference in each of the one or more antenna groups, and notifying the terminal with the strength of the signal transmitted by the reception antenna group and information for measuring the interference in each of the one or more antenna groups. | 11-26-2015 |
20160029353 | APPARATUS AND METHOD FOR TRANSMITTING/RECEIVING DOWNLINK DATA CHANNEL SIGNAL TRANSMISSION INFORMATION IN CELLULAR RADIO COMMUNICATION SYSTEM USING COOPERATIVE MULTI-POINT SCHEME - An apparatus and a method for transmitting/receiving downlink data channel signal transmission information in a cellular radio communication system using a Cooperative Multi-Point (CoMP) scheme are provided. In the downlink data channel signal transmission information transmission method, a Base Station (BS) transmits downlink data channel signal transmission information including information related to Resource Elements (REs) scheduled for a downlink data channel signal transmission to a User Equipment (UE), and transmits downlink data channel signal non-transmission information including information related to REs through which a downlink data channel signal is not transmitted among the REs scheduled for the downlink data channel signal transmission to the UE. | 01-28-2016 |
20160043845 | METHOD AND DEVICE FOR SENDING AND RECEIVING A REFERENCE SIGNAL - The present invention relates to a method for sending and receiving a reference signal for a backhaul subframe in a wireless communication system in which a relay is present and also to a device therefor, constituted in such a way that common reference signals for a plurality of receiving devices and reference signals dedicated to separate receiving devices are allocated dispersed in a subframe, and the common reference signals and the dedicated reference signals are generated and are sent and received via the subframe. The present invention can improve the channel estimation performance for subframes in a wireless communication system. In this way, communications efficiency in wireless communication systems can be improved. | 02-11-2016 |
20160043851 | METHOD AND APPARATUS FOR ALLOCATING A CONTROL CHANNEL RESOURCE OF A RELAY NODE IN A BACKHAUL SUBFRAME - A method and apparatus for configuring a control channel between a first transceiver and a second transceiver in a communication system are provided. The method includes generating, by the first transceiver, a signaling message including information for the control channel; transmitting, by the first transceiver, the signaling message including information for the control channel to the second transceiver; generating, by the first transceiver, the control channel based on the information for the control channel; and transmitting, by the first transceiver, the generated control channel to the second transceiver, wherein the information for the control channel includes resource assignment information, reference signal information, and information related to at least one of a localized type and a distributed type. | 02-11-2016 |
20160072568 | APPARATUS AND METHOD FOR FORMING BEAM IN WIRELESS COMMUNICATION SYSTEM - The present invention proposes an apparatus and a method capable of forming M*N number of beams by a base station, which supports signal transmission/reception of the macro service area in heterogeneous networks in which a macro service area is formed with the M*N number of beams through a two-dimensional arrangement simultaneously considering the horizontal dimension and the vertical dimension and at least one small service is formed in the macro service area. To this end, at least one interference prediction beam formed to transmit signals interfering in transmission signals in at least one small service area from among the signals to be transmitted by the M*N number of beams is selected, and each of the M*N number of beams is formed in consideration of the inter-cell interference in at least one small service area due to the signals to be transmitted by at least one selected interference prediction beam. | 03-10-2016 |
Patent application number | Description | Published |
20100084013 | SOLAR CELL - A solar cell is disclosed. The solar cell includes an n-type or p-type amorphous silicon layer, a transparent electrode, and a metal buffer layer between the transparent electrode and the amorphous silicon layer. The metal buffer layer contains at least one of In, Sn, B, Al, Ga, and Zn. When the transparent electrode contains indium tin oxide (ITO), the metal buffer layer contains at least one of In and Sn. When the transparent electrode contains zinc oxide, the metal buffer layer contains at least one of B, Al, Ga, and Zn. | 04-08-2010 |
20100132792 | SOLAR CELL AND METHOD OF MANUFACTURING THE SAME - A solar cell and a method of manufacturing the same are disclosed. The solar cell includes a substrate, at least one emitter layer on the substrate, at least one first electrode electrically connected to the at least one emitter layer, and at least one second electrode electrically connected to the substrate. At least one of the first electrode and the second electrode is formed using a plating method. | 06-03-2010 |
20100193027 | SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME - A solar cell and a method for manufacturing the same are disclosed. The solar cell includes a substrate of a first conductive type, an anti-reflection layer that is positioned on the substrate and is formed of a transparent conductive oxide material, a plurality of emitter layers on the substrate, the plurality of emitter layers being of a second conductive type opposite the first conductive type, a plurality of first electrodes on the plurality of emitter layers, and a plurality of second electrodes that are electrically connected to the substrate and are positioned to be spaced apart from the plurality of first electrodes. The first electrodes and the second electrodes are positioned on the same surface of the substrate. | 08-05-2010 |
20110056544 | SOLAR CELL - A solar cell is disclosed. The solar cell includes a substrate containing first impurities of a first conductive type, an emitter layer containing second impurities of a second conductive type opposite the first conductive type, a first electrode electrically connected to the emitter layer, and a second electrode electrically connected to the substrate. The emitter layer and the substrate form a p-n junction. A doping concentration of the second impurities of the emitter layer linearly or nonlinearly changes depending on a depth of a position within the emitter layer. | 03-10-2011 |
20110056545 | SOLAR CELL - A solar cell is discussed. The solar cell includes a substrate of a first conductive type, an emitter region of a second conductive type opposite the first conductive type that is positioned on the substrate, a first field region of the first conductive type that is positioned on the substrate to be separated from the emitter region, a first electrode electrically connected to the emitter region, a second electrode electrically connected to the first field region, and an insulating region positioned on at least one of the emitter region and the first field region. | 03-10-2011 |
20110056550 | SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME - A solar cell and a method for manufacturing the same are disclosed. The solar cell includes a substrate that contains first impurities of a first conductive type and is formed of a crystalline semiconductor, a first field region that is positioned on an incident surface of the substrate and contains second impurities of a second conductive type, an emitter region that contains third impurities of a third conductive type, is formed of a non-crystalline semiconductor, and is positioned on a non-incident surface of the substrate opposite the incident surface of the substrate, a first electrode electrically connected to the emitter region, and a second electrode electrically connected to the substrate. | 03-10-2011 |
20110061732 | SOLAR CELL - A solar cell is shown. The solar cell includes a semiconductor substrate of a first conductive type; a first amorphous semiconductor layer including a crystalline portion; a first electrode portion on the semiconductor substrate; and a second electrode portion on the semiconductor substrate. | 03-17-2011 |
20120042945 | SOLAR CELL - A solar cell is discussed. The solar cell includes a substrate having a first conductivity type and made of a crystalline semiconductor; an emitter region having a second conductivity type opposite the first conductivity type, and forming a p-n junction with the substrate; a surface field region having the first conductivity type and being separated from the emitter region; a first electrode connected to the emitter region; and a second electrode connected to the surface field region, wherein at least one of the emitter region and the surface field region includes a plurality of semiconductor portions, and at least one of the plurality of semiconductor portion is a crystalline semiconductor portion. | 02-23-2012 |
20120085397 | SOLAR CELL - A solar cell includes a first conductivity type crystalline semiconductor substrate, a first amorphous silicon region, a first electrode, and a second electrode. The crystalline semiconductor substrate may include a plurality of pyramidal-shaped projections or a plurality of reverse-pyramidal shape depressions on at least one surface thereof. The first amorphous silicon region may be positioned on the crystalline semiconductor substrate and have a second conductivity type opposite the first conductivity type. The first electrode may be positioned on the first amorphous silicon region, and a second electrode positioned on the substrate. At least one pyramidal-shaped projection or at least one reverse-pyramidal shape depression may include two adjacent inclination surfaces, and a rounded edge portion where the two adjacent inclination surfaces meet. | 04-12-2012 |
20130081674 | SOLAR CELL MODULE - A solar cell module according to an embodiment of the invention includes a plurality of back contact solar cells each including a substrate, a plurality of first electrodes, each of which is positioned on a back surface of the substrate and extends in a first direction, and a plurality of second electrodes, each of which is positioned between the two adjacent first electrodes and extends in the first direction, a plurality of first conductive adhesive films, each of which contacts one end of each of the first electrodes of one of the two adjacent back contact solar cells, a plurality of second conductive adhesive films, each of which contacts one end of each of the second electrodes of the other of the two adjacent back contact solar cells, and an interconnector positioned between the two adjacent back contact solar cells. | 04-04-2013 |
20130081675 | SOLAR CELL MODULE - A solar cell module according to an embodiment of the invention includes a plurality of solar cells each including a substrate, a first electrode current collector which is positioned at a first edge of a back surface of the substrate and extends in a first direction, and a second electrode current collector which is positioned at a second edge of the back surface of the substrate and extends in the first direction, a conductive adhesive film contacting a first electrode current collector of a first solar cell of the plurality of solar cells, or a second electrode current collector of a second solar cell adjacent to the first solar cell, or both, and an interconnector which contacts the conductive adhesive film and electrically connects the adjacent first and second solar cells to each other. | 04-04-2013 |
20140360571 | SOLAR CELL AND MANUFACTURING METHOD THEREOF - A manufacturing method of a solar cell is discussed. The manufacturing method of the solar cell includes forming a tunneling layer on one surface of a semiconductor substrate, forming a semiconductor layer on the tunneling layer, doping the semiconductor layer with a first conductive dopant and a second conductive dopant to form a first conductive semiconductor layer and a second conductive semiconductor layer, and diffusing hydrogen into the first and second conductive semiconductor layers to hydrogenate the first and second conductive semiconductor layers. | 12-11-2014 |
20150059849 | SOLAR CELL - A solar cell including a non-amorphous semiconductor substrate of a first conductive type; at least a first semiconductor layer on the non-amorphous semiconductor substrate, the first semiconductor layer including a portion that is amorphous and a plurality of portions having crystal lumps, so that the plurality of portions having the crystal lumps are distributed in the first semiconductor layer; a first electrode on the semiconductor substrate; and a second electrode on the semiconductor substrate. | 03-05-2015 |
20150214396 | SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME - A solar cell and a method for manufacturing the same are discussed. The method for manufacturing the solar cell includes forming an amorphous silicon layer on a back surface of a crystalline semiconductor substrate containing impurities of a first conductive type, performing a first diffusion process for diffusing impurities of a second conductive type opposite the first conductive type into a portion of the amorphous silicon layer to form an emitter region, and performing a second diffusion process for diffusing impurities of the first conductive type into a remaining portion except the portion of the amorphous silicon layer having the impurities of the second conductive type to form a back surface field region. When at least one of the first diffusion process and the second diffusion process is performed, the amorphous silicon layer is crystallized to form a silicon layer. | 07-30-2015 |
20150263188 | SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME - A solar cell is discussed, and includes a substrate; a first field region; a first electrode directly formed on an emitter region; and a second electrode directly formed on a second field region, wherein a second passivation layer comprises a first back passivation portion and a second back passivation portion. Furthermore, the first back passivation portion is merely positioned between the emitter region and the substrate and the second field region and the substrate, and the second back passivation portion is positioned between the emitter region and the second field region, and wherein the first back passivation portion positioned between the emitter region and the substrate is physically separated from first back passivation portion positioned between the second field region and the substrate. | 09-17-2015 |