Patent application number | Description | Published |
20090015443 | Transmit methods for CCFI/PCFICH in a wireless communication system - A method of transmitting a control channel format indicator (CCFI), also known as PCFICH (Physical Control Format Indicator Channel), in case where the length of a coded CCFI is not an integer multiple of three, including mapping a plurality of two-bit CCFI into a codebook with each component codeword having three bits; generating a sequence of codewords selected from the codebook by repeating the selected component codeword for predetermined times; generating a codeword by concatenating the sequence of the selected component codewords with the original CCFI bits; and transmitting the codeword carrying information of CCFI. The method further includes a step of generating a permutation of each of the four codewords by assigning K repetitions of the three-bit component codeword to the number of K resource units respectively and mapping remaining K bits of each of the four codewords separately to the number of K resource units. | 01-15-2009 |
20090092148 | RESOURCE REMAPPING AND REGROUPING IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for remapping and regrouping transmission resources in a wireless communication system. First, a set of new permutation algorithms based on Galois field operation is proposed. Then the proposed algorithms and the known Pruned Bit Reversal Ordering (PBRO) algorithm are applied to several of various resource mapping schemes, including slot or symbol level Orthogonal Cover (OC)/Cyclic Shift (CS) mapping, cell-specific slot-level and symbol-level CS hopping patterns, and subframe and slot level base sequence hopping patterns. | 04-09-2009 |
20090231993 | Methods of uplink channelization in LTE - Methods of a slot-level remapping physical uplink control channels into two resource blocks respectively located at two slots of a subframe, are generally adapted to a 3GPP LTE physical uplink where ACK/NAK resource blocks may be applied by the extended cyclic prefix, adapted to a complex 3GPP LTE physical uplink where mixed resource blocks (where the ACK/NAK and CQI channels coexist) may be applied by the normal cyclic prefix, and adapted to a complex 3GPP LTE physical uplink where mixed resource blocks (where the ACK/NAK and CQI channels coexist) may be applied by the extended cyclic prefix. | 09-17-2009 |
20090245170 | System and method for the placement of rank information in a physical uplink shared channel - A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of selecting two or more orthogonal frequency-division multiplexing (OFDM) symbols in a subframe of a physical uplink shared channel, the two or more OFDM symbols are selected starting from the bottom of the physical uplink shared channel in a bottom-up manner, and repeating one or more rank information (RI) coded bits in each of the selected two or more OFDM symbols. | 10-01-2009 |
20110235599 | METHOD AND SYSTEM FOR UPLINK ACKNOWLEDGEMENT SIGNALING IN CARRIER-AGGREGATED WIRELESS COMMUNICATION SYSTEMS - A base station includes a transmit path circuitry to transmit DL grant, data streams, and a control signal to configure a number of uplink transmit antenna ports PUCCH to a subscriber station. The base station also includes a receive path circuitry to receive ACK/NACK modulation in response to the data streams. If the subscriber station is configured to transmit ACK/NACK using one uplink transmit antenna port and channel selection with PUCCH format | 09-29-2011 |
20110305226 | RESOURCE REMAPPING AND REGROUPING IN A WIRELESS COMMUNICATION SYSTEM - Methods and apparatus for remapping and regrouping transmission resources in a wireless communication system. First, a set of new permutation algorithms based on Galois field operation is proposed. Then the proposed algorithms and the known Pruned Bit Reversal Ordering (PBRO) algorithm are applied to several of various resource mapping schemes, including slot or symbol level Orthogonal Cover (OC)/Cyclic Shift (CS) mapping, cell-specific slot-level and symbol-level CS hopping patterns, and subframe and slot level base sequence hopping patterns. | 12-15-2011 |
20120076221 | COMMUNICATION METHODS FOR CCFI/PCFICH IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control channel format indicator (CCFI), also known as PCFICH (Physical Control Format Indicator Channel), in case where the length of a coded CCFI is not an integer multiple of three, including mapping a plurality of two-bit CCFI into a codebook with each component codeword having three bits; generating a sequence of codewords selected from the codebook by repeating the selected component codeword for predetermined times; generating a codeword by concatenating the sequence of the selected component codewords with the original CCFI bits; and transmitting the codeword carrying information of CCFI. The method further includes a step of generating a permutation of each of the four codewords by assigning K repetitions of the three-bit component codeword to the number of K resource units respectively and mapping remaining K bits of each of the four codewords separately to the number of K resource units. | 03-29-2012 |
20120076222 | METHOD AND APPARATUS FOR USING CONTROL CHANNEL FORMAT INDICATOR (CCFI) CODEWORDS IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting a control channel format indicator (CCFI), also known as PCFICH (Physical Control Format Indicator Channel), in case where the length of a coded CCFI is not an integer multiple of three, including mapping a plurality of two-bit CCFI into a codebook with each component codeword having three bits; generating a sequence of codewords selected from the codebook by repeating the selected component codeword for predetermined times; generating a codeword by concatenating the sequence of the selected component codewords with the original CCFI bits; and transmitting the codeword carrying information of CCFI. The method further includes a step of generating a permutation of each of the four codewords by assigning K repetitions of the three-bit component codeword to the number of K resource units respectively and mapping remaining K bits of each of the four codewords separately to the number of K resource units. | 03-29-2012 |
20120147841 | SYSTEM AND METHOD FOR THE PLACEMENT OF RANK INFORMATION IN A PHYSICAL UPLINK SHARED CHANNEL - A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of selecting two or more orthogonal frequency-division multiplexing (OFDM) symbols in a subframe of a physical uplink shared channel, the two or more OFDM symbols are selected starting from the bottom of the physical uplink shared channel in a bottom-up manner, and repeating one or more rank information (RI) coded bits in each of the selected two or more OFDM symbols. | 06-14-2012 |
20120201120 | METHODS OF UPLINK CHANNELIZATION IN LTE - Methods of a slot-level remapping physical uplink control channels into two resource blocks respectively located at two slots of a subframe, are generally adapted to a | 08-09-2012 |
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 |
20120230271 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus are provided for transmitting control information to first and second terminals by a Base Station (BS) in a wireless communication system transmitting control information according to a plurality of muting patterns. The method includes determining a resource for transmitting a Channel Status Information Reference Signal (CSI-RS) and a resource for applying muting; determining a resource for transmitting a control signal to a first terminal according to the plurality of muting patterns; and transmitting control information including the determined resource information to at least one of the first terminal and a second terminal. The resource for transmitting the control signal to the first terminal is applied as a resource to which muting is applied for the second terminal. | 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 |
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 |
20120327873 | METHOD AND APPARATUS FOR SCHEDULING CoMP USER EQUIPMENT - Methods and apparatus are provided for scheduling in a communication system. A Coordinated Multi-point Transmission/Reception (CoMP) set of cells is determined for a terminal that supports a CoMP function. An indicator for use in scheduling one or more cells in the CoMP set and cell information corresponding to the indicator are transmitted to the terminal. Scheduling information with the indicator is transmitted to the terminal. | 12-27-2012 |
20120327911 | SYSTEM AND METHOD FOR THE PLACEMENT OF RANK INFORMATION IN A PHYSICAL UPLINK SHARED CHANNEL - A wireless communication network comprising a plurality of base stations capable of wireless communication with a plurality of subscriber stations within a coverage area of the network, wherein at least one of the plurality of base stations is capable of selecting two or more orthogonal frequency-division multiplexing (OFDM) symbols in a subframe of a physical uplink shared channel, the two or more OFDM symbols are selected starting from the bottom of the physical uplink shared channel in a bottom-up manner, and repeating one or more rank information (RI) coded bits in each of the selected two or more OFDM symbols. | 12-27-2012 |
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 |
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 |
20130188577 | REFERENCE SIGNAL DESIGN AND ASSOCIATION FOR PHYSICAL DOWNLINK CONTROL CHANNELS - A method and apparatus for designing a Reference Signal (RS) used by a User Equipment (UE) to obtain respective channel estimates for demodulating respective Physical Downlink Control CHannels (PDCCHs), for determining at a UE a number of resource blocks to include for a reception of a Physical Downlink Shared CHannel (PDSCH), for determining at a UE a RS antenna port in order to enable spatial multiplexing of Enhanced PDCCH (EPDCCH) transmissions to different UEs, and for supporting Quadrature Amplitude Modulation 16 (QAM | 07-25-2013 |
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 |
20130235853 | TRANSMISSION OF UPLINK CONTROL INFORMATION FOR COORDINATED MULTI-POINT RECEPTION - Methods and apparatus for a User Equipment (UE) to determine a number of coded modulation symbols per spatial layer for an Uplink Control Information (UCI) type it multiplexes in a Physical Uplink Shared CHannel (PUSCH) is provided. The UE communicates with different sets of Reception Points (RPs) in different Transmission Time Intervals (TTIs) wherein two RPs in a same set of RPs have a communication latency that is smaller than or equal to a predetermined value and two RPs in two different respective sets of RPs have a communication latency that is larger than a predetermined value. | 09-12-2013 |
20130265955 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING CHANNELS IN MOBILE COMMUNICATION SYSTEM SUPPORTING MASSIVE MIMO - A channel transmission/reception method and an apparatus for transmitting/receiving channels between a base station and a mobile terminal efficiently in a mobile communication supporting massive Multiple Input Multiple Output (MIMO) transmission are provided. The method includes determining a resource to which a Demodulation Reference Signal (DMRS) addressed to a terminal is mapped within a resource block, the DMRS resource being positioned in at least one of a first resource set capable of being allocated for DMRS and a second resource set symmetric with the first resource set on a time axis, and transmitting the DMRS and DMRS allocation information to the terminal. | 10-10-2013 |
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 |
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 |
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 |
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 |
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 |
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 |