Patent application number | Description | Published |
20110086659 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - Disclosed are apparatuses and methods for transmitting and receiving control information, such as downlink assignment and uplink grant, to each CC through a DCI format of a PDCCH in a wireless communication system using a plurality of CCs. Exemplary embodiments include configuration and transmission of a CC indicator for the DCI format, in order to identify a CC to which the control information transferred by each DCI format corresponds from among the CCs. | 04-14-2011 |
20110105162 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A system and a method for transmitting control information by a system in a heterogeneous wireless communication network using Component Carriers (CCs), the heterogeneous wireless communication network including a first wireless communication network and a second wireless communication network, which at least partially overlap and are heterogeneous, the system controlling the second wireless communication network can more stably and efficiently transmit control information in a heterogeneous network environment. The method includes: calculating an environmental parameter having an influence on transmission of control information; determining a transmission scheme of the control information according to the calculated environmental parameter; and transmitting the control information to a User Equipment (UE) connected to the second wireless communication network according to the determined transmission scheme. | 05-05-2011 |
20110292847 | APPARATUS AND METHOD FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Embodiments of the present invention relate to a wireless communication system, and more particularly, to a technology for allocating a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system. | 12-01-2011 |
20120044796 | METHOD FOR GENERATING SIGNAL PATTERN USING MODULUS OR SEQUENCE, AND DEVICE THEREOF - Disclosed are a method and an apparatus for generating signal patterns used for a transmission/reception process between a terminal and a base station by using a modular sonar sequence. | 02-23-2012 |
20120147844 | METHOD AND SYSTEM FOR ALLOCATING RESOURCES FOR COMPONENT CARRIERS IN A WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a wireless communication system which has a plurality of component carriers and a method and system for allocating resources for each component carrier. The present disclosure relates to a scheme in which cell coverage is set for each component carrier in consideration of the wireless environment of the component carriers, and a scheme in which a random access process of a user equipment is controlled in accordance with said set cell coverage and resources are allocated in accordance with a priority configuration. | 06-14-2012 |
20120165053 | METHOD AND APPARATUS FOR TRANSCEIVING A SIGNAL IN A COMMUNICATION SYSTEM - The present invention relates to a method for measuring the position of user equipment through a reference signal, or pilot, in an orthogonal frequency division multiplexing-based wireless mobile communication system. The present invention relates to a method for transmitting a cell-specific positioning reference signal (PRS) pattern which is a signal pattern used in transceiving between the user equipment and a base station. | 06-28-2012 |
20120195286 | APPARATUS AND METHOD FOR TRANSCEIVING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to an apparatus and method for transceiving signals between a terminal and a base station in a wireless communication system. The present specification relates to a signal-transceiving method in which location reference signals discriminated by frequency units for each base station, such that base stations which transmit location reference signals with the same location reference signal pattern can be further discriminated. | 08-02-2012 |
20120213190 | APPARATUS AND METHOD FOR GENERATING AND TRANSCEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM USING PLURAL COMPONENT CARRIERS - The present invention relates to an apparatus and a method for composing and transmitting/receiving a reference signal in a wireless communication system that uses a plurality of component carriers (CC). In a wireless communication system using a plurality of component carriers, the present invention can reduce an increase in cubic metric (CM) and peak to average power ratio (PAPR) which occur in the course of composing and transmitting/receiving the same reference signal for each component carrier, by composing and transceiving a distinctive reference signal for each component carrier. | 08-23-2012 |
20120269152 | METHOD FOR CONFIGURING A RESOURCE, METHOD FOR TRANSCEIVING DATA IN THE CONFIGURED RESOURCE, AND APPARATUS FOR SAME IN A WIRELESS COMMUNICATION SYSTEM - The present description relates to a wireless communication system, a method for configuring a resource, a method for transceiving data in the configured resource, and an apparatus for the same. The method described in the present description comprises: selecting one or more resource block groups from among the resource block groups contained in at least one or more component carriers so as to generate an aggregated resource block group; and allocating resources in accordance with the configuration of the aggregated resource block group, and transceiving data. Here, information on the aggregated resource block group contains a component carrier indicator. | 10-25-2012 |
20120294253 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method for composing, transmitting, and receiving a reference signal in a wireless communication system for performing non-continuous resource allocation on the basis of a plurality of resource clusters is provided. An increase in a Cubic Metric (CM) and a Peak to Average Power Ratio (PAPR) generated in a process for composing, transmitting, and receiving a same reference signal according to each resource cluster by composing, transmitting, and receiving the reference signal distinguishable from each resource cluster in the wireless communication system for performing the non-continuous resource allocation on the basis of the resource clusters may be prevented. | 11-22-2012 |
20120320843 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING EXTENSION INFORMATION OF COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A base station comprises: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second areas by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas. | 12-20-2012 |
20130070693 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING MULTIPLE DATA TRANSMISSION RESULT - A method and an apparatus for transmitting and receiving multiple data transmission result, the apparatus comprises: a receiver in which a base station receives two or more uplink subframes that include independent data from a terminal; a reception verifier which verifies the independent data received from the receiver; a response data generator which generates a verification result for the independent data as response data; a signal generator which generates a downlink subframe by storing first information of the response data in a first section of a control area, and by storing second information of the response data in a field, which is not changed for a certain period of time, within a second section of the control area that is distinguished from the first section; and a transmitter which transmits the downlink subframe. | 03-21-2013 |
20140211711 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING EXTENSION INFORMATION OF COMPONENT CARRIER IN WIRELESS COMMUNICATION SYSTEM - A base station includes: an area information generation unit which generates information for a determined second area by determining an additional assignment of the second area different from a first area to a component carrier (CC) of the first area having a bandwidth smaller than a bandwidth of a maximum assignable CC; a mapping control unit which controls an assignment of a reference signal to a frequency band including the first and second areas by generating the reference signal for channel estimation in the first and second areas; a signal generation unit which generates the information for the second area and the reference signal as a wireless signal; and a transmission unit for transmitting the generated wireless signal and is characterized by transmitting data to a user terminal and receiving the data from the user terminal by assigning the resources to the first and second areas. | 07-31-2014 |
20140286304 | APPARATUS AND METHOD FOR ALLOCATING CHANNEL STATE INFORMATION-REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Embodiments of the present invention relate to a wireless communication system, and more particularly, to a technology for allocating a Channel State Information-Reference Signal (CSI-RS) in a wireless communication system. Embodiments of the present invention provides an apparatus and method for allocating CSI-RSs to resource areas, in which, under the condition of a subframe in which the CP is an extended CP, and the duplex scheme is TDD, if CSI-RSs for maximum 8 antenna ports are allocated, the CSI-RSs are allocated to the 8th and 9th symbols (symbol No. l=7 and 8), wherein each CSI-RS for every two antenna ports is allocated to the same RE while being discriminated from each other by an orthogonal code and neighbor CSI-RS allocated REs in the frequency axis are spaced by an interval of three REs. | 09-25-2014 |
Patent application number | Description | Published |
20120314743 | APPARATUS AND METHOD FOR TRANSMITTING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to a method/apparatus for extending and transmitting a reference signal, and to a method and apparatus for transmitting a cyclic shift (hereinafter, referred to as CS) parameter. In generating the extended reference signal, the CS is determined as a function for both a basic CS parameter and an extended CS parameter. | 12-13-2012 |
20150333945 | APPARATUS AND METHOD FOR TRANSMITTING A REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - The present specification relates to a method/apparatus for extending and transmitting a reference signal, and to a method and apparatus for transmitting a cyclic shift (hereinafter, referred to as CS) parameter. In generating the extended reference signal, the CS is determined as a function for both a basic CS parameter and an extended CS parameter. | 11-19-2015 |
20150365978 | METHOD AND APPARATUS FOR CONFIGURING RANDOM ACCESS SEQUENCE LENGTH FOR HIGH CARRIER FREQUENCY BAND IN WIRELESS COMMUNICATION SYSTEM - A method of receiving a random access sequence by a base station in a wireless communication system is disclosed. The method includes transmitting information on at least one of random access formats for different effective channel lengths to the user equipment from a base station, and transmitting a random access sequence based on the at least one random access format from the base station, wherein the random access formats have different lengths of effective channel section for receiving the random access sequence. | 12-17-2015 |
20150372737 | METHOD AND APPARATUS FOR TRANSMITTING DOWNLINK DATA ON BASIS OF BEAM RESTRICTED SUB-FRAME - The method comprises: a step in which the base station transmits to a terminal configuration information related to the beam restricted sub-frame; and a step in which the base station transmits downlink data to the terminal via a sub-frame. The sub-frame includes the beam restricted sub-frame and a normal sub-frame, setting information includes information indicating a sub-frame set as the beam restricted sub-frame among multiple sub-frames, the beam restricted sub-frame is a sub-frame transmitted only based on a first beam subset, the normal sub-frame is a sub-frame transmitted based on the first beam subset and a second beam subset, the first beam subset is the set of beams generated based on a first precoding matrix set, and the second beam subset is the set of beams generated based on a second precoding matrix set including the first precoding matrix set. | 12-24-2015 |
20150373656 | METHOD FOR OBTAINING SYNCHRONIZATION BETWEEN DEVICES IN WIRELESS ACCESS SYSTEM SUPPORTING DEVICE-TO-DEVICE COMMUNICATION, AND DEVICE SUPPORTING SAME - The present invention, which is used in a wireless access system supporting device-to-device (D2D) communication, defines a new random access channel region and provides methods for obtaining synchronization between D2D devices in the new random access channel region, and devices supporting same. The method for obtaining synchronization between devices in a wireless access system supporting device-to-device (D2D) communication, according to one embodiment of the present invention, may comprise: a step in which a first terminal receives a D2D preamble from a second terminal via a D2D random access channel (RACH) region in an RACH region; a step in which the first terminal obtains synchronization with the second terminal by using the D2D preamble; and a step in which the first terminal performs D2D communication with the second terminal. The RACH region may comprise a legacy RACH region to which a legacy preamble for performing an RACH procedure with a base station is transmitted, and the D2D RACH region. | 12-24-2015 |
20160007334 | METHOD FOR ALLOTTING SYSTEM BANDWIDTH IN WIRELESS ACCESS SYSTEM SUPPORTING MACHINE-TYPE COMMUNICATION AND APPARATUS FOR SUPPORTING SAME - The present invention is used for a wireless access system supporting a machine type communication (MTC), and provides a method for allotting a new system bandwidth for MTC and an apparatus for supporting the same. According to an embodiment of the present invention, a method for allotting a system bandwidth for an MTC terminal in a wireless access system supporting a machine type communication (MTC) includes the steps of: causing an MTC terminal to receive an upper layer signal containing the system bandwidth indication information representing an MTC system bandwidth allotted to the MTC terminal; and causing the MTC terminal to transmit uplink control information through the MTC system bandwidth represented by the system bandwidth indication information. In this case, the MTC system bandwidth can be constructed by connecting to a legacy system bandwidth in the direction of the frequency axis. | 01-07-2016 |
20160029179 | METHOD FOR ALLOCATING BROADCAST CHANNEL, METHOD FOR TRANSMITTING AND RECEIVING BROADCAST CHANNEL SIGNAL, AND DEVICE FOR SUPPORTING SAME - Disclosed are a novel method for allocating a broadcast channel and a novel method for transmitting and receiving a broadcast channel signal in a wireless access system, and devices for supporting the same. The method for receiving a broadcast signal in a wireless access system, according to one embodiment of the present invention, comprises the steps of: periodically receiving one or more broadcast signals during a preset transmission time interval; obtaining a transmission position and a transmission pattern for the one or more broadcast signals in a transmission time interval; and obtaining system information included in the broadcast signals on the basis the transmission position and/or the transmission pattern. | 01-28-2016 |
20160036569 | METHOD AND APPARATUS FOR DATA TRANSMISSION ON CONTROL CHANNELS FROM BASE STATION TO USER EQUIPMENTS IN WIRELESS COMMUNICATION SYSTEM - A method for data transmission on control channels from a Base Station (BS) to a User Equipment (UE) in a wireless communication system is disclosed. The method includes multiplexing a common control channel and a UE-specific control channel for the UE using at least one of time division multiplexing and frequency division multiplexing; and performing data transmission on the multiplexed common control channel and the UE-specific control channel to the UE. The UE-specific control channel is multiplexed with one or more UE-specific control channels for other UEs using at least one of time division multiplexing, frequency division multiplexing, spatial multiplexing, and code division multiplexing. | 02-04-2016 |
20160081091 | METHOD FOR ALLOCATING RESOURCE FOR DEVICE FOR WIRELESS COMMUNICATION AND BASE STATION FOR SAME - A method of allocating a resource for user equipments in a base station in a full duplex radio (FDR) communication environment is disclosed. The method includes determining an FDR frequency band for performing FDR communication with a plurality of user equipments, selecting a first user equipment and a second user equipment among the plurality of user equipments, a correlation between the first and second user equipments being less than a threshold value, and allocating a first section as a downlink frequency resource for the first user equipment and an uplink frequency resource for the second user equipment, and allocating a second section as an uplink frequency resource for the first user equipment and a downlink frequency resource for the second user equipment, the first section and the second section being parts of the FDR frequency band. | 03-17-2016 |
20160087715 | STRUCTURE OF FULL DUPLEX RADIO REGION APPLIED IN RADIO ACCESS SYSTEM SUPPORTING FULL DUPLEX RADIO SCHEME, AND METHOD AND APPARATUS FOR ALLOCATING SAME - The present invention relates to a structure of a full duplex radio (FDR) region in an FDR system. Further, the present invention provides a method and apparatuses for transmitting allocation information on a configured FDR region. In an embodiment of the present invention, a method of allocating an FDR region by a base station in a radio access system supporting an FDR scheme comprises the steps of: transmitting a control signal including FDR region allocation information to a terminal and performing FDR-based communication with the terminal through an FDR region indicated by the FDR region allocation information. At this time, the FDR region allocation information may contain one or more of first number information indicating a number of subcarriers included in the FDR region, position information indicating an allocation position of the FDR region, and second number information indicating a number of subcarriers included in a guard region used for reducing interference. | 03-24-2016 |
20160099802 | METHOD AND APPARATUS FOR TRANSMITTING/RECEIVING SIGNAL IN WIRELESS ACCESS SYSTEM WHICH SUPPORTS FDR TRANSMISSION - The present invention relates a wireless access system which supports a full duplex radio (FDR) transmission environment. A method for receiving a signal from a base station by a terminal in the wireless access system which supports FDR transmission according to an embodiment of the present invention comprises the steps of: receiving, from the base station, reference signal mode information indicating resources by which a reference signal is transmitted, from among reference signal available resources by which the reference signal can be transmitted; receiving, from the base station, additional resource mode information indicating additional data resources by which a terminal can simultaneously transmit data, from among the resources by which the reference signal is transmitted; and transmitting the data using the additional resource mode information simultaneously while receiving the reference signal using the reference signal mode information. | 04-07-2016 |
Patent application number | Description | Published |
20120327804 | METHOD AND APPARATUS FOR CONTROLLING UPLINK TRANSMISSION POWER - The present description relates to a method for controlling uplink power in a distributed multi-node system, comprising the following steps: receiving reference signals from a plurality of antenna nodes containing at least one antenna; estimating average propagation loss on the basis of the receiving power of the reference signals received from the plurality of antenna nodes; receiving, via a downlink control channel, noise and interference (NI) information from a base station which contains the plurality of antenna nodes; and determining uplink transmission power using the estimated average propagation loss and the received noise and interference information. | 12-27-2012 |
20130094384 | METHOD AND APPARATUS FOR PERFORMING CHANNEL MEASUREMENT IN A DISTRIBUTED MULTI-NODE SYSTEM - The present description relates to a method for receiving a reference signal (RS) in a distributed multi-node system, comprising: a step of receiving, from a base station, channel state information reference signal (CSI-RS) configuration information which indicates the configuration of the channel state information reference signal the power of which is nonzero; and a step of receiving a channel state information reference signal for at least one node in a cell on the basis of the channel state information reference signal configuration information, wherein said channel state information reference signal with non-zero power has at least one configuration, and is received via at least one subframe. | 04-18-2013 |
20130242877 | METHOD AND APPARATUS FOR NOTIFYING A NODE IN A MULTI-NODE SYSTEM - The present description relates to a method for notifying at least one node being used from among a plurality of nodes in a multi-node system including the plurality of nodes and a base station for controlling the plurality of nodes, wherein the method comprises a step in which a terminal determines, from the table preemptively shared with the base station, an index for indicating at least one node to be notified; and a step in which the terminal performs communication with the base station using the determined index. | 09-19-2013 |
20130308503 | METHOD FOR TRANSMITTING UPLINK CONTROL INFORMATION AND USER EQUIPMENT, AND METHOD FOR RECEIVING UPLINK CONTROL INFORMATION AND BASE STATION - Disclosed are a method and a UE for transmitting uplink control information, and a method and a BS for receiving uplink control information. According to the present invention, a time-frequency resource for the UL transmission, which collides with the DL transmission by the neighbor cell, can be removed or reduced to mitigate inter-cell interference. | 11-21-2013 |
20130308547 | METHOD FOR SENDING AND RECEIVING TERMINAL CAPABILITY CHANGE INFORMATION FOLLOWING TERMINAL CONNECTION TO AN EXTERNAL APPARATUS - The present invention relates to concerns a capability information transmission method in a wireless mobile communication system wherein, when a terminal having a predetermined capability reports the capability of the terminal to a base station, the reporting comprises the steps of: connecting to an external apparatus comprising at least an antenna; and reporting, to the base station, information giving the capability as changed by the connection with the external apparatus. | 11-21-2013 |
20130308590 | CHANNEL STATE INFORMATION TRANSMITTING METHOD AND USER EQUIPMENT, CHANNEL STATE INFORMATION RECEIVING METHOD AND BASE STATION - As channel state information of multiple nodes in a multiple node system, the present invention relates to a method and a device for transmitting and receiving information showing a correlation between said multiple nodes. Also, the present invention relates to a method and a device for transmitting and receiving a Channel Quality Indication (CQI), in consideration of signal through transmitted by multiple nodes. | 11-21-2013 |
20130343220 | METHOD FOR TRANSCEIVING CHANNEL STATE INFORMATION AND TRANSCEIVING DEVICE - The present invention relates to a method, in which a terminal transmits channel state information in a multi-node system, which includes the steps of: receiving information about cooperative transmission candidate nodes from a network; calculating first channel state information about the cooperative transmission candidate nodes; calculating second channel state information by assuming that the nodes included in the interference candidate modes are interference nodes among the cooperative transmission candidate nodes; and transmitting the calculated first and second channel state information to the network. | 12-26-2013 |
20140022961 | UPLINK POWER CONTROL METHOD, USER EQUIPMENT, AND BASE STATION - Provided is a method for mitigating inter-cell interference generated by the collision of UL transmissions and DL transmissions between adjacent cells in an asymmetric time division duplex (TDD) communication system. The present invention removes or reduces time-frequency resources for UL transmissions which collide with DL transmissions of an adjacent cell, and thus can mitigate inter-cell interference. | 01-23-2014 |
20140023033 | METHOD AND APPARATUS FOR TRANSCEIVING CHANNEL STATUS INFORMATION AND TRANSCEIVER - According to the present invention, a method of a terminal to transmit channel status information in a multi distributed node system includes: receiving a request for a channel status information report on a plurality of nodes from a network; calculating channel status information on the plurality of nodes; and transmitting the calculated channel status information to the network. The channel status information includes information on a correlation between the plurality of nodes. The information on the correlation provides a method for transmitting channel status information, which includes an index in a layer combination table representing the degree of correlation between nodes. | 01-23-2014 |
20140071848 | METHOD FOR REPORTING CHANNEL STATE INFORMATION IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS THEREFOR - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for reporting channel state information (CSI), wherein the method in which a terminal reports CSI comprises the steps of: receiving configuration information for periodic CSI reporting from a base station; and transmitting CSI information for each of a plurality of sets of CSI reports based on said configuration information to said base station via a physical uplink control channel (PUCCH). Said plurality of sets of CSI reports contains one or more mutually different subframes. | 03-13-2014 |
20140086192 | METHOD FOR RECEIVING DOWNLINK CONTROL CHANNEL BY MEANS OF A TERMINAL IN A WIRELESS CHANNEL SYSTEM AND APPARATUS FOR SAME - The present invention relates to a method for receiving a downlink control channel by means of a terminal in a wireless channel system and an apparatus for same. In particular, the method for receiving a downlink control channel by means of a terminal in a wireless channel system includes the steps of: dividing at least one resource block allocated to the terminal into the preset number of subsets; selecting one or more subsets for the terminal from the at least one resource block; setting the selected subset set as a search space for the terminal; and performing blind decoding for the search space to detect the downlink control channel, wherein the preset number of subsets are respectively demodulated by demodulation reference signals (DM-RS) defined with different antenna ports in each of the resource blocks. | 03-27-2014 |
20140092811 | METHOD FOR TRANSMITTING CHANNEL STATUS INFORMATION AND USER EQUIPMENT, AND METHOD FOR RECEIVING CHANNEL STATUS INFORMATION AND BASE STATION - Disclosed are a method and an apparatus for transmitting/receiving channel status information on at least one of a plurality of nodes in a multi-node system. According the present invention, a channel status between a UE and a node which transmits data to the UE can be reported more accurately. | 04-03-2014 |
20140094216 | METHOD FOR DETERMINING UPLINK TRANSMISSION POWER AND USER EQUIPMENT - The present invention provides a method and apparatus for determining uplink transmission power, and a method and apparatus for uplink power control. The base station of the present invention provides user equipment (UE) with UE specific weights for downlink path loss for uplink power control when the UE simultaneously transmits signals using a plurality of nodes. The UE then determines uplink transmission power by applying the UE-specific weights to the downlink path loss. | 04-03-2014 |
20140153426 | METHOD AND APPARATUS FOR PERFORMING A CHANNEL MEASUREMENT THROUGH A RECEIVING END IN A WIRELESS COMMUNICATION SYSTEM - Disclosed is a method for receiving a downlink signal through a receiving end in a wireless communication system. Specifically, the method comprises the steps of: receiving, from a transmitting end, information on at least one antenna port of a reference signal for a control channel and at least one antenna port of a reference signal for a data channel; receiving the control channel on the basis of the reference signal for the control channel; and receiving the data channel on the basis of the reference signal for the control channel and the reference signal for the data channel, wherein the at least one antenna port of the reference signal for the control channel is included in the at least one antenna port of the reference signal for the data channel. | 06-05-2014 |
20140153515 | METHOD FOR TRANSMITTING/RECEIVING CONTROL INFORMATION AND APPARATUS FOR TRANSMITTING/RECEIVING - The present invention relates to a method for a terminal receiving control information in a distributed multi-node system, and provides a method for receiving the control information comprising the steps of: receiving from a node information relating to a resource allocation method with regard to an enhanced-physical downlink control channel (E-PDCCH); and receiving from the node the control information through the E-PDCCH, based on the information relating to the resource allocation method which is received. | 06-05-2014 |
20140153531 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - One embodiment of the present invention relates to a method for transmitting control information by a base station, comprising the steps of: transmitting data through a physical downlink shared channel (PDSCH); and receiving a receipt acknowledgement in response to said data in the 4 | 06-05-2014 |
20140192755 | METHOD FOR TRANSMITTING CONTROL INFORMATION BY A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR - The present application discloses a method for transmitting, by a base station, downlink control information to a terminal in a wireless communication system. More particularly, the method comprises the steps of: allocating, to a transmission resource, the downlink control information for the terminal; and transmitting, to the terminal, the downlink control information using the transmission resource. the downlink control information for the terminal comprises: a downlink grant; and an uplink grant, wherein the downlink grant is allocated to one of first and second slots of a subframe of the transmission resource, and the uplink grant is allocated to at least one of first and second slots of a subframe of the transmission resource. | 07-10-2014 |
20140204922 | METHOD FOR TRANSMITTING UPLINK SIGNALS FROM A USER EQUIPMENT TO A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM AND METHOD FOR THE SAME - A method for transmitting uplink signals from a user equipment to a base station in a time division multiplexing wireless communication system is disclosed. The method comprises the steps of transmitting a first uplink signal on an uplink subframe or a special subframe that precedes the uplink subframe, by preceding a first timing advance value at a reference time; and transmitting a second uplink signal on the uplink subframe by preceding a second timing advance value at the reference time, wherein the first timing advance value is greater than the second timing advance value, and the first uplink signal is transmitted for an uplink pilot time slot (UpPTS) period of the special subframe if a difference value between the first timing advance value and the second timing advance value is greater than a preset value. | 07-24-2014 |
20140233525 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN WIRELESS COMMUNICATION SYSTEM - A method for a base station to transmit a Demodulation Reference Signal (DMRS) for a control channel in a wireless communication system is disclosed. The method includes transmitting a DMRS for an Enhanced-Physical Downlink Control Channel (E-PDCCH) to a user equipment, wherein a DMRS sequence corresponding to the transmitted DMRS is formed using an initial sequence calculated based on a virtual cell ID. | 08-21-2014 |
20140286288 | METHOD AND APPARATUS FOR TRANSCEIVING A DOWNLINK CONTROL CHANNEL IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving a downlink control channel. According to one embodiment of the present invention, a method in which a base station transmits a downlink control channel to a terminal in a wireless communication system comprises the steps of: transmitting one or more enhanced-physical downlink control channels (E-PDCCHs) within a resource region allocable for an E-PDCCH; and transmitting E-PDCCH allocation resource information for the one or more E-PDCCHs to the terminal. The E-PDCCH allocation resource information indicates the resource in which the one or more E-PDCCHs exist from among the resource region allocable to the E-PDCCH. An effective physical downlink shared channel (PDSCH) allocation resource region for the terminal can be determined on the basis of the E-PDCCH allocation resource information. | 09-25-2014 |
20140293944 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN WIRELESS COMMUNICATION SYSTEM - A multiple distributed antenna system is disclosed. A method for a base station to allocate an antenna port to transmit signals in a wireless communication system includes allocating a resource for transmitting an Enhanced-Physical Downlink Control Channel (E-PDCCH) for a user equipment, and transmitting the E-PDCCH to the user equipment using the allocated resource, wherein the E-PDCCH for the user equipment is allocated to a first antenna port, a Physical Downlink Shared Channel (PDSCH) corresponding to the E-PDCCH for the user equipment is allocated to a second port, and the second antenna port to which the PDSCH is allocated is determined according to the first antenna port. | 10-02-2014 |
20140301329 | METHOD AND APPARATUS FOR ALLOCATING RESOURCES IN WIRELESS COMMUNICATION SYSTEM - A multiple distributed system is disclosed. An uplink control resource allocation method for a user equipment to transmit an Acknowledgement/Negative ACK (ACK/NACK) signal includes receiving one or more Enhanced-Physical Downlink Control Channels (E-PDCCHs), receiving one or more Physical Downlink Shared Channels (PDSCHs) corresponding to the one or more E-PDCCHs, and transmitting ACK/NACK signals for reception of the one or more PDSCHs through a Physical Uplink Control Channel (PUCCH), wherein Control Channel Element (CCE) indexes of the PUCCH transmitting the ACK/NACK signals are determined in consideration of first CCE indexes of the one or more E-PDCCHs and the number of CCEs of a PUCCH determined by a higher layer. | 10-09-2014 |
20140328295 | METHOD AND APPARATUS FOR TRANSCEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - An embodiment of the present invention relates to a method in which a base station transmits a signal in a wireless communication system, said method comprising: a step of allocating downlink control information to either a first slot or a second slot of a subframe; a step of allocating data related to said downlink control information to the slot to which said downlink control information is allocated; and a step of transmitting the subframe including said downlink control information and said data. The downlink control information is allocated to one or more resource block, and the data is allocated to the slot paired with the slot to which the downlink control information is allocated. | 11-06-2014 |
20140328302 | METHOD AND APPARATUS FOR TRANSCEIVING A DOWNLINK CONTROL CHANNEL IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transceiving a downlink control channel. According to one embodiment of the present invention, method in which a base station transmits downlink control information in a wireless communication system comprises: a step for determining an allocatable resource region for an enhanced physical downlink control channel (E-PDCCH) of a local allocation system; a step for allocating an E-PDCCH to the determined allocatable resource region for the E-PDCCH; and a step for transmitting the downlink control information on the allocated E-PDCCH. The allocatable resource region for the E-PDCCH can be set as a group of partial resource regions in each of a plurality of partitions when a downlink system bandwidth contains said plurality of partitions. | 11-06-2014 |
20140334416 | METHOD AND APPARATUS FOR TRANSCEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - An embodiment of the present invention relates to a method in which a terminal receives control information in a wireless communication system, said method comprising: a step of performing blind decoding in at least one portion of a resource region except the time unit indicated by a physical control format indicator channel (PCFICH) on a subframe, said at least one portion of the resource region is determined by whether a synchronizing signal or system information is transmitted or not. | 11-13-2014 |
20140348099 | METHOD FOR TRANSMITTING DOWNLINK CONTROL CHANNEL BY BASE STATION IN WIRELESS COMMUNICATION SYSTEM, AND DEVICE THEREFOR - Disclosed is a method for transmitting a downlink control channel by a base station in a wireless communication system. More particularly, the method comprises the following steps: setting a transmission resource for transmitting the downlink control channel in a data area of a subframe; mapping one or more first control channels for downlink acknowledgement(ACK)/negative-ACK(NACK) information to the transmission resource; and transmitting the mapped one or more first control channels, wherein the one or more first control channels are mapped to a location adjacent to a terminal specific reference signal existing in the transmission resource. | 11-27-2014 |
20140369287 | METHOD FOR ESTIMATING DATA CHANNEL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method in which a UE estimates a downlink data channel in a wireless communication system, and an apparatus for the same. Specifically, disclosed is a method in which a UE estimates a downlink data channel in a wireless communication system, the method including the steps of: receiving a downlink control channel using a UE-specific reference signal; bundling a resource block for a downlink data channel into one channel estimation unit when a space resource for the downlink control channel and a space resource for the downlink data channel which makes commands in the downlink control channel are the same as each other; and performing a channel estimation on the basis of the UE-specific reference signal with respect to the one channel estimation unit. | 12-18-2014 |
20150029963 | METHOD AND DEVICE FOR TRANSMITTING A TERMINAL-SPECIFIC REFERENCE SIGNAL FOR A CONTROL CHANNEL BY A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for transmitting a terminal-specific reference signal for a control signal by a base station in a wireless communication system. Specifically, the method is characterized in that it comprises: transmitting a plurality of control channels and a first terminal-specific reference signal for the plurality of control channels to a first resource region; and transmitting one control channel and a second terminal-specific reference signal for the control channel to a second resource region, wherein the different descrambling identifiers are applied to the first and second terminal-specific reference signals. | 01-29-2015 |
20150085766 | METHOD FOR MULTIPLEXING CONTROL INFORMATION AT BASE STATION IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS FOR THE SAME - A method for transmitting a downlink control channel at a base station in a wireless communication system is disclosed herein. The method includes the steps of generating control information for each of a plurality of user equipments; mapping the control information for each of the plurality of user equipments to one of subcarrier groups within at least one resource block pairs configured for the downlink control channel, wherein the subcarrier groups mapped to the control information for each of the plurality of user equipments are different from each other; and transmitting the downlink control channel through the subcarrier groups. | 03-26-2015 |
20150124736 | METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for reporting channel status information (CSI). According to one embodiment of the present invention, the method comprises receiving a first CSI-reference signal (CSI-RS) based on CSI-RS configuration information with respect to a first domain antenna group of a two-dimensional antenna structure; reporting a first piece of CSI with respect to the first domain antenna group, which is generated using the first CSI-RS; receiving a second CSI-RS, based on CSI-RS configuration information with respect to a second domain antenna group of the two-dimensional antenna structure; and reporting a second piece of CSI with respect to the second domain antenna group, which is generated using the second CSI-RS, wherein the CSI-RS configuration information with respect to the second domain antenna group can be determined based on the first piece of CSI. | 05-07-2015 |
20150146618 | METHOD AND APPARATUS FOR REPORTING CHANNEL STATE INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more specifically, disclosed are a method and an apparatus for reporting channel status information. A method for reporting the channel status information (CSI) from a user equipment in the wireless communication system, according to one embodiment of the present invention, comprises the steps of: receiving from a base station a channel status information-reference signal (CSI-RS) on the basis of CSI-RS configuration information, which is provided from the base station; and reporting to the base station the CSI that is generated by using the CSI-RS, wherein the CSI-RS configuration information can include a plurality of CSI-RS configurations with respect to a first domain antenna group having a 2-dimensional antenna structure of the base station. | 05-28-2015 |
20150163771 | METHOD OF ALLOCATING A RESOURCE IN A WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME - In a wireless communication system, when a terminal receives control information from a downlink subframe, which is divided into a Physical Downlink Control Channel (PDCCH) region and a Physical Downlink Shared Channel (PDSCH) region, in a wireless communication system, the receiving of the control information includes: receiving, from a base station, first CFI information indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for Physical Downlink Control Channel (PDCCH) transmission; receiving, from the base station, second CFI information indicating start OFDM symbol information available for Physical Downlink Shared Channel (PDSCH) transmission corresponding to an enhanced Physical Downlink Control Channel (E-PDCCH); and receiving the PDSCH from the base station on the basis of the first CFI information or the second CFI information. The PDCCH is placed in the PDCCH region of the downlink subframe, and the E-PDCCH is placed in the PDSCH region of the downlink subframe. | 06-11-2015 |
20150195077 | METHOD OF CONFIGURING CYCLIC PREFIX FOR SMALL CELL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - Disclosed herein is a method of transceiving a signal between a transmitter and a receiver in a wireless communication system. The method includes transceiving the signal in units of a subframe including a plurality of symbols. Each of the plurality of symbols includes a valid symbol and a cyclic prefix, and a length of the cyclic prefix is changed according to a distance between the transmitter and the receiver. | 07-09-2015 |
20150264683 | METHOD FOR CONFIGURING WIRELESS FRAME OF USER EQUIPMENT AND USER EQUIPMENT, AND METHOD FOR CONFIGURING WIRELESS FRAME OF BASE STATION AND BASE STATION - Flexible employment of frame configuration in light of the Doppler frequency change is proposed. According to the present invention, frame configuration for a predetermined frequency band may be changed. Changing frame configuration in the present invention may include changing the number (≧0) of zero-power subcarriers which alternate with nonzero-power subcarriers. | 09-17-2015 |
20150282178 | METHOD FOR CONFIGURING WIRELESS FRAME OF USER EQUIPMENT, USER EQUIPMENT, METHOD FOR CONFIGURING WIRELESS FRAME OF BASE STATION, AND BASE STATION - Flexible employment of frame configuration in light of the Doppler frequency change is proposed. According to the present invention, frame configuration for a predetermined frequency band may be changed. Changing frame configuration in the present invention may include changing subcarrier spacing. | 10-01-2015 |
20150288425 | METHOD AND APPARATUS FOR RELIEVING DOPPLER BROADENING IN WIRELESS ACCESS SYSTEM THAT SUPPORTS SUPER HIGH FREQUENCY BAND - The present invention provides methods for relieving effective Doppler broadening in performing pin-point beamforming and provides apparatuses for supporting the methods, wherein the methods and the apparatuses are used in a wireless access system that supports a super high frequency band. The method for relieving Doppler broadening in a wireless access system that supports a super high frequency band according to one embodiment of the present invention may comprise the steps of: receiving a downlink signal at a receiving end; estimating a Doppler spectrum for the downlink signal received at the receiving end; and calculating a carrier wave shift value based on the Doppler spectrum estimated at the receiving end. | 10-08-2015 |
20150289219 | SYNCHRONIZING SIGNAL RECEIVING METHOD AND USER EQUIPMENT, AND SYNCHRONIZING SIGNAL TRANSMITTING METHOD AND BASE STATION - The present invention defines multiple synchronizing signal resource candidates from/in which a synchronizing signal can be transmitted or detected. The base station according to the present invention transmits a synchronizing signal from a synchronizing signal resource, which corresponds to at least the cell identifier of a cell which is associated with the synchronizing signal, the time synchronization of the cell, the length of a cyclic prefix which is applied to the cell, or the type of the base station, among the multiple synchronizing signal resource candidates. The user equipment according to the present invention can obtain information on at least the cell identifier, the time synchronization with the cell, the length of the cyclic prefix, or the type of the base station, on the basis of the synchronizing signal resource in which the synchronizing signal has been detected. | 10-08-2015 |
20150289220 | METHOD AND APPARATUS FOR GENERATING SYNCHRONOUS SIGNAL IN WIRELESS ACCESS SYSTEM FOR SUPPORTING SUPER-HIGH FREQUENCY BAND - The present invention relates to a method for newly defining a synchronous signal used in a super-high frequency band and acquiring downlink synchronization by using the synchronous signal, and an apparatus for supporting the same. The method for enabling a base station to transmit the synchronous signal in the wireless access system supporting the super-high frequency band, as one embodiment of the present invention, comprises the steps of: generating a general synchronous signal which do not have repetitive characteristics; generating a repetitive synchronous signal on the basis of a repetition factor for estimating a carrier frequency offset of the super-high frequency band; transmitting the general synchronous signal from a first frame; and transmitting the repetitive synchronous signal from a second frame. At this time, the repetition factor indicates the repetitive characteristic of the repetitive synchronous signal. | 10-08-2015 |
20150304083 | METHOD FOR CHANGING PATTERN OF REFERENCE SIGNALS ACCORDING TO RANK VARIATION IN WIRELESS COMMUNICATION SYSTEM, AND AN APPARATUS THEREFOR - A method for transmitting a reference signal to a user equipment at a base station in a wireless communication system is disclosed. The method includes transmitting the reference signal to the user equipment according to a first pattern corresponding to a first rank and, if a rank is changed from the first rank to a second rank, transmitting the reference signal to the user equipment according to a second pattern corresponding to the second rank, wherein, if the second rank is greater than the first rank, the second pattern includes the first pattern. Preferably, the first pattern is a reference signal pattern for a single rank and the second pattern is defined as a hierarchical structure in which one or more reference signal symbols are added to the first pattern in a time domain direction. | 10-22-2015 |
20150381252 | METHOD OF REPORTING CHANNEL STATE INFORMATION FOR VERTICAL BEAMFORMING IN A MULTICELL BASED WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method of reporting a channel state from a user equipment in a wireless communication system and apparatus therefor are disclosed. The present invention includes receiving information on vertical beamforming angles of a serving node and a cooperation node from the serving node, generating the channel state information for a cooperative transmission mode using the information on the vertical beamforming angle, and reporting the channel state information to the serving node. | 12-31-2015 |
20160044643 | METHOD OF ALLOCATING A RESOURCE IN A WIRELESS COMMUNICATION SYSTEM AND DEVICE FOR SAME - In a wireless communication system, when a terminal receives control information from a downlink subframe, which is divided into a Physical Downlink Control Channel (PDCCH) region and a Physical Downlink Shared Channel (PDSCH) region, in a wireless communication system, the receiving of the control information includes: receiving, from a base station, first CFI information indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols available for Physical Downlink Control Channel (PDCCH) transmission; receiving, from the base station, second CFI information indicating start OFDM symbol information available for Physical Downlink Shared Channel (PDSCH) transmission corresponding to an enhanced Physical Downlink Control Channel (E-PDCCH); and receiving the PDSCH from the base station on the basis of the first CFI information or the second CFI information. The PDCCH is placed in the PDCCH region of the downlink subframe, and the E-PDCCH is placed in the PDSCH region of the downlink subframe. | 02-11-2016 |
Patent application number | Description | Published |
20150296467 | METHOD FOR TRANSMITTING/RECEIVING SYNCHRONIZING SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - The present invention relates to a wireless communication system. The method whereby a terminal receives a synchronizing signal in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving location information on a domain, from which the synchronizing signal is transmitted, among domains resulting from the division of the whole system bandwidth into N parts along a frequency axis and into M parts along a time axis (wherein N and M are natural numbers); and receiving the synchronizing signal from the domain corresponding to the location information. | 10-15-2015 |
20150304079 | METHOD FOR TRANSMITTING/RECEIVING SYNCHRONIZING SIGNALS IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR - The present invention relates to a wireless communication system. The method whereby a terminal receives synchronizing signals in a wireless communication system supporting multi-carriers, according to one embodiment of the present invention, comprises the steps of: receiving location information on domains, from which the synchronizing signals are transmitted, among the domains resulting from the division of the whole system bandwidth into N parts along a frequency axis and into M parts along a time axis (wherein N and M are natural numbers); and receiving the synchronizing signals from the domains corresponding to the location information, wherein the respective synchronizing signals transmitted to multiple carriers can be transmitted from domains having a different frequency and/or time. | 10-22-2015 |
20150312026 | METHOD AND DEVICE FOR GENERATING SYNCHRONIZATION SIGNAL IN WIRELESS ACCESS SYSTEM SUPPORTING ULTRAHIGH FREQUENCY BAND - Abstract: The present invention relates to a method for newly defining a synchronization signal to be used in an ultrahigh frequency band and acquiring downlink synchronization by using the synchronization signal, and a device for supporting the same. A method by which an eNode B (eNB) transmits a synchronization signal for compensating for a carrier frequency offset in a wireless access system supporting an ultrahigh frequency band, according to one embodiment of the present invention, can comprise the steps of: generating a first repetitive synchronization signal having a first repetitive characteristic; generating a second repetitive synchronization signal having a second repetitive characteristic; and transmitting the first repetitive synchronization signal and the second repetitive synchronization signal in the same subframe. | 10-29-2015 |
20150318968 | METHOD FOR TRANSMITTING SYSTEM INFORMATION IN WIRELESS ACCESS SYSTEM SUPPORTING ULTRAHIGH FREQUENCY AND DEVICE FOR SUPPORTING SAME - The present invention relates to a wireless access system supporting an ultrahigh frequency band, and more particularly, to a method for constructing a reference signal for system information transmission in an ultrahigh frequency band, and a device for supporting the same. According to one embodiment of the present invention, a method for transmitting system information in a wireless access system supporting an ultrahigh frequency band can comprise the steps of: allocating to a specific subframe, by a base station, at least one among a broadcast channel region and a unicast channel region for transmitting system information; and transmitting, by the base station, the system information by using at least one among the broadcast channel region and the unicast channel region. In this situation, a number of first reference signals allocated to the broadcast channel region can be greater than a number of second reference signals allocated to the unicast channel region. | 11-05-2015 |
20150326369 | METHOD OF TRANSMITTING AND RECEIVING CHANNEL QUALITY INDICATOR INFORMATION IN WIRELESS ACCESS SYSTEM AND DEVICE SUPPORTING SAME - The present invention relates to a method of transmitting and receiving channel quality indicator (CQI) information that relates to a channel aging effect in an environment where a time-varying channel characteristic is maximized, and a device supporting same. According to an embodiment of the present invention, a method of reporting multi-channel quality indicator (CQI) information by a terminal in a wireless access system that supports an environment where a time-varying channel characteristic is maximized may include receiving a first reference signal, obtaining information on a first CQI by using the first reference signal, receiving a second reference signal, obtaining information on a second CQI by using the second reference signal, reporting the information on the first CQI, and reporting the information on the second CQI. | 11-12-2015 |
20150359003 | METHOD FOR PERFORMING HIGH-SPEED INITIAL ACCESS PROCESS IN WIRELESS ACCESS SYSTEM SUPPORTING ULTRAHIGH FREQUENCY BAND, AND DEVICE SUPPORTING SAME - The present invention provides a method for performing an initial access process used in a wireless access system and in an ultrahigh frequency band, and devices supporting same. The method for performing a high-speed initial access process in a wireless access system supporting an ultrahigh frequency band, according to one embodiment of the present invention, may comprise the steps of: receiving a synchronizing signal; receiving a broadcast channel signal; generating a random access preamble by using pre-fixed physical random access parameters according to a small cell supported in the ultrahigh frequency band; and transmitting the generated random access preamble on the basis of the synchronizing signal and the broadcast channel signal. | 12-10-2015 |
20150365948 | METHOD FOR TRANSMITTING AND RECEIVING PLANAR ANTENNA BASED REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for transmitting signals to a user equipment at a base station in a wireless communication system is disclosed. The method includes generating a user equipment specific reference signal sequence for the user equipment, determining transmission resources for mapping the user equipment specific reference signal sequence, based on a vertical sector in which the user equipment is located, mapping the user equipment specific reference signal sequence to the determined transmission resources, and transmitting the user equipment specific reference signal sequence to the user equipment using a second-dimensional planar antenna. | 12-17-2015 |
20150372793 | METHOD AND APPARATUS FOR PROVIDING ANTENNA CONFIGURATION INFORMATION FOR MASSIVE MULTIPLE INPUT MULTIPLE OUTPUT IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a reference signal for supporting a plurality of antennas to a User Equipment (UE) at a Base Station (BS) in a wireless communication system is disclosed. The method includes grouping the plurality of antennas into antenna groups comprising a predetermined number of antenna ports, transmitting resource information about a reference signal for at least one antenna group of the antenna groups, and transmitting the reference signal for the at least one antenna group to the UE based on the resource information. | 12-24-2015 |
20150373743 | METHOD AND APPARATUS FOR TRANSMITTING RANDOM ACCESS CHANNEL DESIGNED FOR TRANSMISSION IN HIGH CARRIER FREQUENCY IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a random access preamble at a user equipment in a wireless communication system is disclosed. The method includes determining a random access sequence transmission period using a random access sequence, configuring a random access preamble by inserting a cyclic prefix at a front of the random access sequence transmission period and a guard time at an end of the random access sequence transmission period, and transmitting the random access preamble on a random access channel to a base station. The random access preamble is configured by repeating the random access sequence a predetermined number of times, if the length of the random access sequence is smaller than the random access sequence transmission period. | 12-24-2015 |
20150381331 | A METHOD OF TRANSMITTING A REFERENCE SIGNAL FROM A BASE STATION TO A USER EQUIPMENT IN A WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method of transmitting a reference signal from a base station to a user equipment in a wireless communication system and apparatus therefor are disclosed. The present invention includes dividing a system band into at least one or more partial bands, configuring a time-axis high density reference signal on a high frequency partial band with reference to a center frequency of the system band, configuring a time-axis low density reference signal on a low frequency partial band with reference to the center frequency, and transmitting the configured reference signals to the user equipment. | 12-31-2015 |