Patent application number | Description | Published |
20090168716 | METHOD FOR RESOURCE PARTITIONING WITH PREDEFINED PATTERN AND ADAPTIVE RESOURCE PARTITIONING METHOD - An adaptive resource partitioning method includes: selecting a predefined pattern-based partitioning method or an informed map-based partitioning method according to the number of channels used for resource allocation, data characteristics, and a channel environment variation, if the predefined pattern scheme is selected, selecting any of predefined patterns, partitioning distributed and localized resource allocation areas according to the selected pattern, and transmitting a pattern index of the selected pattern to a terminal, and if the informed map scheme is selected, partitioning distributed and localized resource allocation areas according to an arbitrary pattern, and transmitting bitmap control information indicating information of the partitioned areas to the terminal. So, it effectively obtains a diversity and a scheduling gain when distributed and localized resource allocations are simultaneously used, such that it increases flexibility of resource allocation, increases an available data transfer rate, and reduces an amount of necessary control information. | 07-02-2009 |
20090175243 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting and receiving signals using multi-band Radio Frequencies (RFs) is provided. The method performs channel coding on an information unit of a specific layer above a physical layer to produce a specific number of codewords and maps the generated specific number of codewords to a plurality of frequency allocation bands managed by one specific layer, and then transmits the mapped signal through each of the plurality of frequency allocation bands. Each of the plurality of frequency allocation bands managed by the one specific layer has a band size for allocation for a specific service according to a predetermined frequency policy. When the generated specific number of codewords is mapped to the plurality of frequency allocation bands, each of the specific number of codewords is mapped to at least one of the plurality of frequency allocation bands. A frequency allocation band used for transmission of each codeword when the codeword is retransmitted may be set to be different from that when it is initially transmitted. | 07-09-2009 |
20090201877 | RANGING METHOD USING NEW RANGING STRUCTURE - A method for performing ranging in a broadband wireless access system including a user equipment and a base station and using multi-carrier is described. A method using a structure in which a length of a part occupied by a ranging sequence is extended in the time domain includes a method using a structure in which a preamble occupied by the ranging sequence is repeated three times or more, a method using a structure in which a length of a preamble occupied by the ranging sequence is extended in the time domain, and a method using a structure in which lengths of a cyclic prefix and/or a guard time in the time domain are designed in consideration of a delay spread of a channel and a trip delay. Even in a cell structure having an extended radius, the trip delay can accurately be estimated. | 08-13-2009 |
20090213723 | METHOD FOR UPLINK TRANSMISSION IN OFDM(A) SYSTEM - A method for uplink transmission in an OFDMA system is provided. The subcarrier transmission method includes arranging 4 pilot REs at different positions of a frequency axis in a basic unit when the basic unit includes 4 subcarriers on the frequency axis and 6 OFDM(A) symbols in a time axis, arranging data REs at remaining positions of the basic unit, and transmitting the basic unit to a receiving end. | 08-27-2009 |
20090219875 | FRAME FOR FLEXIBLY SUPPORTING HETEROGENEOUS MODES AND TDD/FDD MODES, AND METHOD FOR TRANSMITTING SIGNALS USING THE SAME - A frame structure for flexibly supporting heterogeneous modes and TDD/FDD modes and a method for transmitting signals using the same are disclosed. A method for transmitting a signal using a preset frame structure in a communication system which supports a TDD mode and an FDD mode and supports two or more different communication schemes includes constructing a signal in units of the frames and transmitting the signal, wherein at least one of determination of a ratio of a DL region and a UL region within the frame when the communication system communicates according to the TDD mode allocation of a time region according to the modes of the communication schemes when the communication system communicates according to a heterogeneous mode supporting the two or more communication schemes and setting of a construction scheme of sub-frames within the frame in units of a prescribed number of the frames or super-frames, is performed on the basis of a specific unit comprised of n OFDM symbols corresponding to a multiple of a UL subchannelization unit. | 09-03-2009 |
20090219910 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting and receiving signals using multi-band Radio Frequencies (RFs) is provided. The method transmits an information unit of a specific layer above a physical layer through a plurality of frequency allocation bands managed by the specific layer and transmits control information identifying each of the plurality of frequency allocation bands. The control information identifying each of the plurality of frequency allocation bands includes a second ID into which a first ID has been converted, the first ID identifying each of the plurality of frequency allocation bands in the physical layer, the second ID identifying each of the plurality of frequency allocation bands managed by the specific layer in the specific layer. To accomplish this, a timing offset is applied to the entirety of a frame or to a preamble (synchronous channel) so that the timing offset is used as the ID. Applying a timing offset to the entirety of a frame or to a preamble (synchronous channel) can achieve an advantage of PAPR reduction. | 09-03-2009 |
20090232163 | METHOD FOR GENERATING SUBFRAME INCLUDING RESOURCE DISTRIBUTION INFORMATION - A method for generating a subframe including resource distribution information is disclosed. The method for generating a subframe includes arranging resource allocation information in a subframe by sequentially allocating a localized permutation and a distributed permutation, and arranging a subframe control header including a resource unit index in a predetermined location by a system parameter, wherein the resource unit index indicates a frequency resource location of the resource allocation information. When both the localized permutation and the distributed permutation are used, a resource distribution method is transmitted to a user equipment. Therefore, an effect of the distributed permutation can be maximized without a great influence on the performance of the localized permutation, and a problem of decoding failure or latency can be prevented. | 09-17-2009 |
20100054144 | METHOD AND APPARATUS FOR SELECTING MODULATION AND CODING SCHEME (MCS) INDEX BASED ON FREQUENCY SELECTIVITY - A method of selecting a modulation and coding scheme (MCS) index in a wireless communication system is disclosed. More specifically, the method includes measuring a frequency selectivity of a receiving channel, selecting a MCS index having a coding rate below a prescribed coding rate threshold value if the measured frequency selectivity is greater than or equal to a specified frequency selectivity threshold, and selecting the MCS index having the coding rate above or equal to the prescribed coding rate threshold value if the measured frequency selectivity is less than the specified frequency selectivity threshold. | 03-04-2010 |
20100069028 | ANTENNA SWITCHING METHOD AND METHOD FOR TRANSMITTING AND RECEIVING SIGNALS FOR THE SAME - A closed-loop antenna switching method, a reference signal allocating method, and a feedback signal transmitting method for the same are disclosed. Namely, by transmitting a reference signal via the plurality of transmitting antennas via the antenna switching for reference signal transmission for each prescribed multiple period of an antenna selection period, efficient antenna index information can be fed back. By setting an antenna switching period to a prescribed multiple of an antenna selection period, it is able to prevent power loss and data decoding performance degradation. And, the present invention includes transmitting a sounding reference signal (SRS) for each band selection period via at least one of the plurality of transmitting antennas and transmitting at least one data demodulation reference signal (DMRS) between the band selection periods via an antenna for not transmitting data by reference signal transmission antenna switching. | 03-18-2010 |
20100103894 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining a frequency partition (FP) count (FPCT), an size of FPi (FPS) for i>0, and subband (SB) count of FPi (FPSC) for i>0 (where FPi is an i | 04-29-2010 |
20100103895 | METHOD AND APPARATUS FOR MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for mapping a resource unit in a wireless communication system is provided. The method includes obtaining L | 04-29-2010 |
20100103896 | METHOD AND APPARATUS OF SUBCHANNELIZATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of subchannelization is provided. The method includes receiving information indicating the number of physical resource unit (PRU) sets allocated to a subband from a base station, and mapping PRUs of a physical region to a subband PRU or a miniband PRU in a granularity of the PRU set according to the received information, wherein the subband PRU is allocated with at least one subband comprising a first number of contiguous PRUs, the miniband PRU is allocated with at least one miniband comprising a second number of PRUs, and the PRU set comprises PRUs whose number is equal to the number of PRUs included in one subband. Subchannelization can be effectively achieved while maintaining a frequency selective scheduling gain and a frequency diversity gain to the maximum extent possible. | 04-29-2010 |
20100110874 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a signal in a wireless communication system are disclosed. The signal transmission method includes grouping a plurality of subcarriers included in a first Orthogonal Frequency Division Multiple Access (OFDMA) symbol within distributed resources into a plurality of subcarrier groups, each subcarrier group having a predetermined number of subcarriers, distributing the plurality of subcarrier groups of the first OFDMA symbol according to a first permutation pattern, transmitting data in the distributed subcarrier groups of the first OFDMA symbol, grouping a plurality of subcarriers included in a second OFDMA symbol within the distributed resources into a plurality of subcarrier groups, each subcarrier group having a predetermined number of subcarriers, distributing the plurality of subcarrier groups of the second OFDMA symbol according to a second permutation pattern, and transmitting data in the distributed subcarrier groups of the second OFDMA symbol. | 05-06-2010 |
20100111014 | METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a signal in a wireless communication system are disclosed. The signal transmission method includes generating encoded packet data for transmission on an uplink, setting distributed resources in a plurality of contiguous subframes, and transmitting at least part of the encoded packet data through the distributed resources to a base station. The distributed resources are interleaved on a subframe basis according to a permutation pattern and the permutation pattern is different for each subframe. | 05-06-2010 |
20100165935 | METHOD OF MAPPING RESOURCE UNIT IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus of mapping a resource unit is provided. Physical resource units (PRUs) are divided into a plurality of PRU sets. The PRUs are mapped to a subband PRU or a miniband PRU in a granularity of the PRU set. The mapping is based on the greatest common divisor of the maximum number of PRU sets. The resource unit can be effectively mapped while maximizing a frequency diversity gain of a subband PRU and a miniband PRU. | 07-01-2010 |
20100177727 | METHOD OF TRANSMITTING RECEIVING A DATA IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting and receiving data in a wireless communication system is disclosed. According to an embodiment of the present invention, a base station (BS) transmits downlink data to a first mobile station supporting a first system via a first zone of a frame and transmitting downlink data to a second mobile station supporting a second system via a second zone located behind the first zone by a frame offset on a time axis, wherein the first zone includes the odd number of OFDM symbols and wherein the frame offset is an offset between a start point of a frame for the first system and a start point of a frame for the second system. | 07-15-2010 |
20100177843 | METHOD FOR TRANSMITTING SIGNALS FOR ACHIEVING DIVERSITY GAIN - A method for transmitting signals for achieving diversity gain is provided. In a communication system having multiple independent transmission paths, a signal is transmitted by mapping it to different independent transmission paths at initial transmission and at retransmission, thereby obtaining diversity gain. Especially, real and ideal components of a transmission signal are mapped to different transmission paths, thereby obtaining additional gain. | 07-15-2010 |
20100208594 | METHOD FOR INSERTING PARITY TO FRAME CONTROL HEADER - A method for inserting parity into an FCH is disclosed. A method for inserting parity into a frame control header includes channel-encoding, by an additional channel encoder, a frame control header bit applied to a legacy encoder, and generating an additional codeword, and mapping the codeword generated by the legacy encoder and the additional channel encoder subcarrier mapping codeword to subcarriers. This method inserts parity into the FCH, and defines a new FCH, such that it extends an FCH coverage simultaneously while maintaining a compatibility with a legacy system. Also, it may add additional energy to a legacy FCH or may give a coding gain to the same legacy FCH, such that it can extend information transferable using reserved bits of the FCH. | 08-19-2010 |
20100254343 | METHOD FOR TRANSMITTING UPLINK PILOT SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND APPARATUS THEREFOR - A method for transmitting an uplink pilot signal in a wireless communication system is disclosed. The method for transmitting an uplink pilot signal in a wireless communication system includes forming a basic unit including a plurality of pilot Resource Elements (REs) and data REs and having a size of 4 subcarriers×9 Orthogonal Frequency Division Multiple Access (OFDMA) symbols, setting the plurality of pilot REs in the basic unit, and transmitting the basic unit to a base station. Each of the REs is time-frequency resource defined by one symbol index and one subcarrier index. | 10-07-2010 |
20100284477 | METHOD FOR TRANSMITTING SIGNAL IN MULTIPLE ANTENNA SYSTEM - A signal transmission method in a multiple antenna system is described. The signal transmission method includes, upon receiving channel state information from a receiving end, estimating a channel according to the channel state information, determining a precoding matrix according to the estimated channel and modifying the signal of the transmitting end using the precoding matrix in a process of mapping a symbol of the signal to a subcarrier, and transmitting the signal to the receiving end. According to the present invention, pre-equalization of a transmission signal can cause a receiving end to perform coherent combination, reduce pilot density by decreasing unnecessary pilots, and reduce interference within a cell or between cells. | 11-11-2010 |
20100298031 | METHOD FOR TRANSMITTING AND RECEIVING SIGNALS USING MULTI-BAND RADIO FREQUENCIES - A method for transmitting an information unit of a specific layer above a physical layer through a plurality of frequency allocation bands managed by the specific layer and transmitting control information identifying each of the plurality of frequency allocation bands. The control information includes a second ID into which a first ID has been converted, the first ID identifying each of the plurality of frequency allocation bands in the physical layer, the second ID identifying each of the plurality of frequency allocation bands managed by the specific layer in the specific layer. To accomplish this, a timing offset is applied to the entirety of a frame or to a preamble (synchronous channel) so that the timing offset is used as the ID. Applying a timing offset to the entirety of a frame or to a preamble (synchronous channel) can achieve an advantage of PAPR reduction. | 11-25-2010 |
20100309793 | METHOD OF ESTIMATING SIGNAL-TO-NOISE RATIO, METHOD OF ADJUSTING FEEDBACK INFORMATION TRANSMISSION, ADAPTIVE MODULATION AND CODING METHOD USING THE SAME, AND TRANSCEIVER THEREOF - A method of estimating a signal-to-noise ratio by considering user mobility, a method of adjusting feedback information transmission, an adaptive modulation and coding method using the same, and a transceiver thereof are disclosed. The present invention includes measuring a first channel parameter and a second channel parameter using first and second symbols sequentially received, respectively, estimating a channel quality considering a time delay between measurements of the first and second channel parameters using the first and second channel parameters, and transmitting information for the estimated channel quality if a variation of the first and second channel parameters is equal to or greater than a prescribed threshold. Accordingly, the present invention reduces performance degradation and feedback overhead caused by a time delay in channel quality estimation. | 12-09-2010 |
20100322161 | ADAPTIVE RESOURCE ALLOCATION METHOD IN A WIRELESS COMMUNICATION SYSTEM AND TRANSCEIVER FOR IMPLEMENTING THE SAME - Methods of allocating data to a plurality of subcarriers in a wireless communication system are disclosed. More specifically, one of the methods includes receiving feedback information from a receiver, calculating a level of mobility of the receiver using the feedback information, determining a resource allocation scheme to use based on the calculated level of mobility, and allocating the data to the plurality of subcarriers based on the determined resource allocation scheme. | 12-23-2010 |
20100329384 | METHOD OF TRANSMITTING A WIDEBAND FRAME - A method of transmitting a wideband frame for a wideband system having backward compatibility with a narrowband system includes configuring a wideband carrier by using a set of base carriers, wherein a bandwidth of the base carriers corresponds to a bandwidth of the narrowband system and any one of center frequencies of the base carriers is the same as a center frequency of the narrowband system, and allocating all or some of guard subcarriers between the two adjacent base carriers to a traffic channel when a center frequency spacing between two adjacent base carriers is an integer multiple of a subcarrier spacing. Accordingly, the method can be used to support backward compatibility with the narrowband system. Further, the method can be equally used when the narrowband system co-exists with the wideband system in a guard band defined in a narrowband of a new system. | 12-30-2010 |
20110007699 | METHOD AND APPARATUS OF ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 01-13-2011 |
20110007831 | FRAME TRANSMISSION METHOD IN A WIRELESS COMMUNICATION SYSTEM - A frame transmission method in a wireless communication system comprises setting a primary frame including a multiplicity of primary sub-frames, setting a secondary frame including a multiplicity of secondary sub-frames, and transmitting the secondary frame, wherein each of the primary sub-frames and each of the secondary sub-frames consists of multiple OFDM symbols, the OFDM symbols included in the primary sub-frame and the OFDM symbols included in the secondary sub-frame have different CP (Cyclic Prefix) lengths from one another, and the primary sub-frames and the secondary sub-frames are all equal in length. It is an advantage of the invention that frames consisting of OFDM symbols with different CP lengths can coexist together. Moreover, when each of the sub-frames within one frame consists of multiple OFDM symbols with different CP lengths, even the sub-frames can coexist together. | 01-13-2011 |
20110019597 | METHOD FOR ALLOCATING RADIO RESOURCES IN FDD FRAME - A method of allocating a radio resource in a frequency division duplex (FDD) frame in which a downlink frame and an uplink frame are divided in a frequency domain in a wireless communication system includes allocating a downlink resource region for a first system in the downlink frame, and allocating an uplink resource region for the first system to the uplink frame such that the uplink resource region does not temporally overlap with the downlink resource region for the first system, wherein a resource region except for the downlink resource region for the first system is allocated to a downlink resource region for a second system in the downlink frame, and a resource region except for the uplink resource region for the first system is allocated to an uplink resource region for the second system in the uplink frame. When a half-duplex FDD (H-FDD)-type user equipment is supported in a frequency division duplex (FDD) frame supporting heterogeneous systems, radio resources can be effectively utilized by minimizing waste of unnecessary radio resources. | 01-27-2011 |
20110051632 | APPARATUS AND METHOD FOR TRANSCEIVING SIGNALS USING FRAME STRUCTURE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transceiving signals using a predetermined frame structure in a wireless communication system is provided. The apparatus includes a Radio Frequency (RF) unit for transceiving a signal through a frame according to the predetermined frame structure. The frame includes 5 subframes, the 5 subframe comprise type-1 subframes including 6 Orthogonal Frequency Division Multiplex Access (OFDMA) symbols and type-2 subframes including 7 OFDMA symbols, and a Cyclic Prefix (CP) length of the frame corresponds to ⅛ of an effective symbol length. | 03-03-2011 |
20110051634 | METHOD OF TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting and receiving control information in a wireless communication system is disclosed. A method for transmitting control information in procedure of data transmission and reception with FDD (frequency division duplex) scheme by a base station of a wireless communication system supporting a mobile station of a first system and a mobile station of a second system includes transmitting information about a number of orthogonal frequency division multiplexing (OFDM) symbols contained in a downlink zone of a frame of the first system in downlink bandwidth to a mobile station of the first system through a ‘Number of OFDMA symbols’ field of a downlink MAP (DL-MAP); and transmitting information about a number of OFDM symbols contained in an uplink zone of the frame of the first system in uplink bandwidth to the mobile station of the first system through a ‘Number of OFDMA symbols’ field of an uplink MAP (UL-MAP), wherein the mobile station operates with half-FDD (H-FDD), and the downlink zone of the frame of the first system does not overlap with the uplink zone of the frame of the first system in time domain. | 03-03-2011 |
20110058527 | METHOD AND DEVICE FOR ALLOCATING A BROADCAST CHANNEL IN A WIRELESS MOBILE COMMUNICATION SYSTEM - A method for receiving a superframe header at a mobile station in a wireless mobile communication system is disclosed. The method comprises receiving a sub-frame including the superframe header and a first data channel and decoding the received superframe header. Herein, the superframe header is located within a predetermined physical frequency band and the predetermined physical frequency band includes a synchronization channel. | 03-10-2011 |
20110090997 | METHOD FOR TRANSMITTING SYNCHRONIZATION CHANNEL USING MULTI-ANTENNA - A method for transmitting a synchronization channel using multi-antenna is disclosed. In a method for transmitting a synchronization channel for using a synchronization channel as a phase reference when decoding a broadcast channel, the method includes using a pre-decided shift value for each antenna, wherein the shift value is pre-decided with a user equipment, so as to apply circular shifts to sequences of the synchronization channel, and transmitting the sequences having the circular shifts applied thereto from a base station to the user equipment. Herein, space frequency/time block codes (SFBC/STBC) may be applied to the broadcast channel. In performing time/frequency domain synchronization in the synchronization channel, regardless of the number of transmission antennae used by the base station when transmitting signals, the synchronization process may be performed. Also, multi-antenna gain may be obtained when transmitting the synchronization channel. Furthermore, channel estimation may be performed for each antenna, and by applying transmission diversity methods to the BCH/control channel/data channel and so on, the performance of the present invention may also be enhanced. | 04-21-2011 |
20110103506 | APPARATUS FOR TRANSMITTING A SYNCHRONOUS SIGNAL IN A MULTI-ANTENNA SYSTEM - An apparatus for transmitting a synchronization signal using a plurality of transmit (Tx) antennas is provided. The apparatus includes a synchronization signal generator for generating a synchronization signal used for tracking timing or frequency synchronization, a transmission processor for allocating different subcarriers to a plurality of Tx antennas without overlapping, mapping the synchronization signal to the subcarriers, and generating an orthogonal frequency division multiplexing (OFDM) symbol by performing inverse fast Fourier transformation (IFFT), a control signal coupler for controlling codes as a resource not to overlap among the plurality of Tx antennas, and the plurality of Tx antennas for transmitting the OFDM symbol. | 05-05-2011 |
20110105056 | METHOD AND APPARATUS FOR TRANSMITTING SEQUENCE IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting a sequence in a wireless communication system is provided. A transmitter generates a block sequence comprising a first sub-block sequence and a second sub-block sequence, generates a phase modulated block sequence by performing phase modulation on the block sequence, maps the phase modulated block sequence to a plurality of sub-blocks, and transmits the phase modulated block sequence mapped to the plurality of sub-blocks. | 05-05-2011 |
20110110257 | UPLINK TRANSMISSION POWER CONTROL METHOD IN A WIRELESS COMMUNICATION SYSTEM - Provided is an uplink transmission power control method in a wireless communication system. Said method includes preferentially determining the transmission power of an uplink control channel, and determining the transmission power of an uplink data channel within the difference between the maximum transmittable power of a terminal and the transmission power of the uplink control channel, wherein the transmission of the uplink control signal through the uplink control channel and the transmission of the uplink data through the uplink data channel are performed at the same time using wireless resources different from one another. The present invention preferentially allocates the transmission power required for the transmission of an uplink control channel, and allocates residual power to an uplink data channel, thereby improving the effectiveness of power allocation when an uplink control signal and an uplink data signal are transmitted at the same time using physical resources different from one another. | 05-12-2011 |
20110116408 | SUBSTRATE CONVEYING DEVICE - A method for controlling uplink transmission power of a mobile station (MS) in a wireless communication system is provided. The method includes: obtaining a plurality of interference indicators indicating uplink interference from a base station (BS), wherein a full bandwidth is divided into a plurality of frequency partitions, and the plurality of interference indicators respectively correspond to the plurality of frequency partitions; determining an uplink transmission power level of a frequency partition corresponding to an interference indicator selected from the plurality of interference indicators on the basis of the selected interference indicator; and controlling the uplink transmission power on the basis of the uplink transmission power level. Accordingly, inter-cell interference can be reduced, and reliability of an MS located in a cell edge can be improved. | 05-19-2011 |
20110117953 | METHOD OF CONTROLLING UPLINK POWER IN WIRELESS COMMUNICATION SYSTEM - A method of controlling uplink power in a wireless communication system includes receiving a power control message including parameters for uplink power control from a base station, and controlling uplink power based on the power control message, wherein the uplink power is determined according to a target SINR (Signal to Interference plus Noise Ratio), the target SINR is determined by a minimum rate SINR required at the base station and a control factor for noise and interference. Transmission power of signal can be more accurately controlled and an influence of an inter-cell interference or a path loss can be reduced to thus improve quality of service of the wireless communication system. | 05-19-2011 |
20110134759 | METHOD AND APPARATUS FOR CONTROLLING UPLINK POWER IN A WIRELESS COMMUNICATION SYSTEM - A method and apparatus for uplink power control performed by a mobile station (MS) in a wireless communication system is provided. The method includes dividing a frequency band for uplink transmission into a plurality of frequency partitions, obtaining a path loss weight for each of the plurality of frequency partitions, and determining transmit power for each of the frequency partitions on the basis of the path loss weight. Overall system performance can be improved. | 06-09-2011 |
20110134968 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for information transmission in a radio communication system. The method includes the steps of creating a first symbol and a second symbol relevant to information, creating a first transmission vector and a second transmission vector on the basis of Alamouti code from the first symbol and the second symbol, and transmitting the first transmission vector via a first antenna and transmitting the second transmission vector via a second antenna. | 06-09-2011 |
20110164547 | METHOD AND APPARATUS FOR TRANSMITTING MBS DATA IN WIRELESS COMMUNICATION SYSTEM USING FRACTIONAL FREQUENCY REUSE - Provided are a method and an apparatus for transmitting multicast broadcast service (MBS) data in a wireless communication system using fractional frequency reuse (FFR). The method comprises: allocating, to a common network zone, part or whole of a frequency partition where FRF (frequency reuse factor) is 1, from among a plurality of frequency partitions; and transmitting MBS data in the common network zone. | 07-07-2011 |
20110200030 | METHOD FOR UPLINK TRANSMISSION IN OFDM(A) SYSTEM - A method for uplink transmission in an OFDMA system is provided. The subcarrier transmission method includes arranging 4 pilot REs at different positions of a frequency axis in a basic unit when the basic unit includes 4 subcarriers on the frequency axis and | 08-18-2011 |
20110216733 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN WIRELESS TRANSMISSION SYSTEM - Provided are a method of information transmission performed by a transmitter in a wireless transmission system and an apparatus for same. Said method comprises a step wherein a first information sequence is generated based on a first transmission symbol and a first resource index, a second information sequence is generated based on a second transmission symbol and a second resource index, a third information sequence is generated based on a third transmission symbol and a third resource index, a fourth information sequence is generated based on a fourth transmission symbol and a fourth resource index, a fifth information sequence is generated based on a fifth transmission symbol and a fifth resource index, a sixth information sequence is generated based on a sixth transmission symbol and a sixth resource index; and a step wherein said first information sequence, said second information sequence, and said third information sequence are transmitted via a first antenna, and said fourth information sequence, said fifth information sequence, and said sixth information sequence are transmitted via a second antenna, respectively. | 09-08-2011 |
20110228722 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL PERFORMED BY RELAY STATION IN WIRELESS COMMUNICATION SYSTEM - A method of transmitting a reference signal performed by a Relay Station (RS) in a wireless communication system comprises allocating a guard time in the front of a backhaul subframe or the end of the backhaul subframe, the backhaul subframe comprising a plurality of slots, each of the plurality of slots comprising a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the guard time being a time interval for switching between an access link and a backhaul link, and transmitting a Demodulation Reference Signal (DMRS) to a Base Station (BS) in an OFDM symbol of the backhaul subframe. The OFDM symbol for the DMRS is not over-lapped with the guard time. | 09-22-2011 |
20110261730 | APPARATUS AND METHOD FOR DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A data transmitter for a wireless communication system is provided. Said apparatus comprises an OFDM (Orthogonal Frequency Division Multiplexing) symbol generating part that generates a plurality of OFDM symbols, a frame configuration part that configures a frame comprising includes said plurality of OFDM symbols, and a transmission part that transmits said plurality of OFDM symbols based on said frame that has been configured. Said frame is divided into a plurality of sub-frames, the number of OFDM symbols that are included in an optional sub-frame is any one of 5, 6, and 7, and the bandwidth of said wireless communication system is 8.75 MHz. Based on a new frame configuration, new parameter requirements may be satisfied taking backward compatibility into account. | 10-27-2011 |
20110317610 | DATA-RECEIVING METHOD AND APPARATUS FOR RELAY STATION IN WIRELESS COMMUNICATION SYSTEM - A method for receiving data by a relay station (RS) in a wireless communication system includes: receiving radio resource allocation information via an R-PDCCH (R-Physical Downlink Control Channel); and receiving data from a base station (BS) via an R-PDSCH (R-Physical Downlink Shared Channel) indicated by the radio resource allocation information, wherein the radio resource allocation information includes information regarding an allocation of resource blocks in a frequency domain and information regarding an allocation of OFDM symbols in a time domain. Since the radio resource allocation information providing information regarding a time relationship between a control channel transmitted by the BS to a UE and a control channel transmitted by the RS to a UE connected to the RS is provided, the RS can reliably receive a signal transmitted from the BS in a backhaul link between the BS and the RS in a wireless communication system including the RS. | 12-29-2011 |
20110317619 | METHOD AND APPARATUS FOR RELAYING DATA IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus of relaying data in a wireless communication system is provided. A relay station (RS) receives relay zone allocation information. A plurality of relay zones is allocated in a resource region by the relay zone allocation information. The relay station receives data transmitted from a super-ordinate station, detects a tunneling traffic destined to a subordinate station from the data, and transmits the tunneling traffic to the subordinate station. The tunneling traffic is transmitted over one of the plurality of relay zones. | 12-29-2011 |
20120002575 | METHOD AND DEVICE FOR TRANSMITTING AND RECEIVING A SIGNAL USING A TIME DIVISION DUPLEXING FRAME STRUCTURE IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to transmission and reception of a frame for a legacy support mode of IEEE 802.16m system for supporting a legacy system. A method of transmitting an uplink signal, in which a signal is transmitted by a user equipment in a wireless mobile communication system, according to the present invention includes the step of transmitting the signal from the user equipment, wherein the signal is transmitted via an uplink frame including 15 OFDMA (orthogonal frequency division multiple access) symbols and wherein the uplink frame comprises a first uplink subframe including 9 OFDMA symbols and a second uplink subframe including 6 OFDMA symbols. Preferably, the user equipment is multiplexed with a second user equipment supporting a legacy system for the wireless mobile communication system only by FDM for an uplink. | 01-05-2012 |
20120033647 | METHOD FOR SETTING UP CARRIER IN CARRIER AGGREGATION SYSTEM AND APPARATUS REQUIRED FOR SAME - The present invention relates to a wireless communication system. Specifically, the invention relates to a method for configuring a component carrier at a base station in a wireless communication system, comprising the steps of determining whether initial access is permitted to a user equipment with respect to a downlink component carrier; and transmitting a synchronization channel signal and a broadcast channel signal to at least one user equipment via the downlink component carrier, wherein the initial access permission is applied to said at least one user equipment by modifying at least one of the synchronization channel signal and the broadcast channel signal. | 02-09-2012 |
20120039180 | APPARATUS AND METHOD FOR MONITORING CONTROL CHANNEL IN MULTI-CARRIER SYSTEM - A method and an apparatus for monitoring a control channel in a multi-carrier system are provided. A terminal sets a common downlink carrier for monitoring a plurality of candidate control channels for receiving common control information among multiples carriers, and monitors the candidate control channels within a common search space of the common downlink carrier. The terminal receives common control information on a control channel which has been successfully decoded from among a plurality of candidate control channels. The invention can reduce a load due to blind decoding of the control channels and decrease battery consumption of the terminal. | 02-16-2012 |
20120039221 | METHOD FOR TRANSMITTING SIGNAL USING A FRAME OF A PREDETERMINED CYCLIC PREFIX LENGTH IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) in a wireless communication system is disclosed. The method for transmitting a signal using a frame having a predetermined cyclic prefix (CP) length in a wireless communication system that supports a plurality of cells comprises receiving the signal using a first frame from a base station; and transmitting the signal to the base station using the first frame, wherein the first frame is supported by a first cell of the plurality of cells and is different from a second frame supported by a second cell of the plurality of cells, the first frame has a structure where a overlap region between an uplink region of the first frame and a downlink region of the second frame or an overlap region between a downlink region of the first frame and an uplink region of the second frame is punctured, and a CP length of the first frame is different from that of the second frame. | 02-16-2012 |
20120063324 | DEVICE AND METHOD FOR MONITORING THE CONTROL CHANNEL IN A MULTICARRIER SYSTEM - The present invention relates to a method and device for monitoring the control channel in a multicarrier system. Each of a plurality of sub-search spaces corresponds to each of a plurality of scheduled component carriers. The terminal monitors a downlink control channel for a scheduled component carrier corresponding to each of the plurality of sub-search spaces. Each of the plurality of sub-search spaces is defined displaced to the extent that they are offset from each other. | 03-15-2012 |
20120063349 | APPARATUS AND METHOD FOR MONITORING CONTROL CHANNEL IN MULTI-CARRIER SYSTEM - Provided are an apparatus and a method for monitoring a control channel in a multiple-carrier system. The user equipment monitors downlink control channels for a plurality of scheduled component carriers in an extended search space. The user equipment receives downlink control information for the scheduled component carrier via a successfully decoded downlink control channel. | 03-15-2012 |
20120063350 | APPARATUS AND METHOD FOR MONITORING CONTROL CHANNEL IN MULTI-CARRIER SYSTEM - Provided are an apparatus and a method for monitoring a control channel in a multi-carrier system. A plurality of sub-search spaces within an extended search space corresponds to a plurality of scheduled component carriers, respectively. Each of the plurality of sub-search spaces includes a plurality of control channel elements (CCEs), and the CCEs of the plurality of sub-search spaces are interleaved with each another within the extended search space. | 03-15-2012 |
20120063351 | DEVICE AND METHOD FOR MONITORING THE CONTROL CHANNEL IN A MULTICARRIER SYSTEM - The present invention relates to a method and device for monitoring the control channel in a multiple carrier system. A terminal determines an extended search space comprising a plurality of sub-search spaces, and each of the plurality of sub-search spaces corresponds to at least one of a plurality of scheduled component carriers. The terminal monitors a downlink control channel for the scheduled component carrier corresponding to each of the plurality of sub-search spaces. At least one of the plurality of sub-search spaces is a shared sub-search space corresponding to at least two of the plurality of scheduled component carriers. | 03-15-2012 |
20120078933 | DEVICE AND METHOD FOR MONITORING CONTROL CHANNEL IN MULTICARRIER SYSTEM - Provided are a method and a device for monitoring the control channel in a multicarrier system. The terminal determines a plurality of terminal-specific search spaces corresponding respectively to a plurality of scheduled component carriers in a control region within a subframe. The terminal monitors a downlink control channel for the scheduled component carriers corresponding respectively to the plurality of terminal-specific search spaces. | 03-29-2012 |
20120093080 | METHOD FOR TRANSMITTING AND RECEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - A method of transmitting and receiving data in a wireless communication system is disclosed. In the method of transmitting the data in the wireless communication system, a base station transmits downlink data to a first terminal supporting a first system through a first zone of a frame, and transmits downlink data to a second terminal supporting a second system through a second zone located at a location separated from the first zone backwardly by a frame offset on a time axis. The wireless communication system may support a bandwidth of 8.75 MHz, the frame offset is an offset between a start point of a frame for the first system and a start point of a frame for the second system, and the first zone includes 3+6*(frame offset−1) Orthogonal Frequency Division Multiplexing (OFDM) symbols. | 04-19-2012 |
20120113889 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - Provided are a method and an apparatus for transmitting reference signals in a wireless communication system including a relay station. A base station respectively generates a plurality of reference signals for a plurality of antenna ports, maps the plurality of reference signals into relay zones within at least one resource block according to predetermined reference signal patterns, and transmits the at least one resource block through the plurality of antenna ports. At this point, the plurality of reference signals includes at least one cell-specific reference signal (CRS) of a 3 | 05-10-2012 |
20120127950 | METHOD AND APPARATUS FOR ALLOCATING AN UPLINK CARRIER FOR TRANSMITTING UPLINK CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for allocating an uplink carrier for transmitting uplink control information in a wireless communication system that supports carrier aggregation. According to one embodiment of the present invention, a method for transmitting uplink control information in a wireless communication system that supports carrier aggregation of M (M≧1) uplink component carriers comprises: a step of receiving setup information on a primary uplink component carrier, from among said M uplink component carriers, via which one or more pieces of uplink control information are to be transmitted; a step of multiplexing said one or more pieces of uplink control information; and a step of transmitting the multiplexed uplink control information through the primary uplink component carrier. | 05-24-2012 |
20120140698 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL SIGNAL OF RELAY STATION IN WIRELESS COMMUNICATION SYSTEM - A method and an apparatus for transmitting a control signal of a relay station in a wireless communication system are provided. The relay station generates a control signal of uplink control information and performs mapping of the generated modulation symbol into a backhaul subframe that has a relay physical uplink control channel (R-PUCCH) assigned thereto. The backhaul subframe includes two slots among. Among single carrier frequency division multiple access (SC-FDMA) symbols that constitute the backhaul subframe, an orthogonal cover (OC) sequence is applied to the SC-FDMA symbol which the modulation symbol has been mapped into, and later the backhaul subframe is transmitted. The generated modulation symbol is mapped according to the same pattern as the two slots. | 06-07-2012 |
20120140726 | RELAY BACKHAUL RESOURCE ALLOCATION - The present invention relates to a method for allocating a relay backhaul resource in a wireless communication system and to an apparatus for same. In detail, the present invention provides a signal-receiving method in which a terminal receives a signal in a wireless communication system, and to an apparatus for same, wherein the method comprises a step of receiving, from a base station, information on one or more first resource blocks (RB) allocated for a relay, a step of receiving resource allocation information through a control channel from the base station, and a step of receiving a predetermined resource block indicated by the resource allocation information among logically continuous second resource blocks. The second resource blocks are logically continuous when excluding said one or more first resource blocks from the entirety of the resource block. | 06-07-2012 |
20120147794 | CHANNEL STATUS INFORMATION FEEDBACK METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEM WITH RELAY STATION - The present invention relates to a wireless communication system, and more particularly, to a channel status information feedback method and apparatus in a wireless communication system with a relay station. The method for transmitting channel status information according to one embodiment of the present invention comprises: receiving a backhaul downlink signal from a base station; generating channel status information based on the backhaul downlink signal; and transmitting the channel status information via a backhaul uplink subframe, wherein the backhaul uplink subframe to which the channel status information is transmitted can be determined based on a subframe index without a designated backhaul downlink subframe and a backhaul uplink transmission timing relation. | 06-14-2012 |
20120155312 | Measurement Reporting Method And Device In A Wireless Communication System - Provided are a measurement reporting method and device in a wireless communications system. A mobile station receives data relating to a measurement set for K (M≦N) component carriers to be measured from among N component carriers, from a base station. The mobile station measures the K component carriers. The mobile station then reports the results of the measurement of the K component carriers to the base station. | 06-21-2012 |
20120163335 | METHOD AND APPARATUS FOR TRANSMITTING MULTI-USER MIMO REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING RELAY - A method for transmitting a demodulation reference signal (DMRS) for down-link multi-user MIMO transmission according to an embodiment of the present invention comprises the steps of: mapping a DMRS for a first layer on a down-link physical resource block according to a first DMRS pattern; mapping a DMRS for a second layer on the down-link physical resource block according to a second DMRS pattern; and transmitting the down-link physical resource block. In the down-link physical resource block, a resource element corresponding to the second DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the first layer and a resource element corresponding to the first DMRS pattern can be punctured on the second layer. | 06-28-2012 |
20120177145 | SEQUENCE-GENERATING METHOD, AND APPARATUS FOR SAME - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for enabling a transmitter to transmit a sequence in a wireless communication system, and to an apparatus for the same. A sequence-transmitting method comprises the steps of: performing at least one of a complex conjugate operation and a reverse operation on a first sequence to generate a second sequence; mapping the second sequence to a plurality of subcarriers in an Orthogonal Frequency Division Multiple Access (OFDMA) symbol; and transmitting the OFDMA symbol to a receiver. The invention also relates to an apparatus for the sequence-generating method. | 07-12-2012 |
20120178360 | REPEATER FOR RECEIVING SIGNALS FROM A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM, AND SIGNAL RECEIVING METHOD - Disclosed are a repeater for receiving signals from a base station in a wireless communication system, and a signal receiving method. The base station reports, to each repeater, information on the aggregation level of a relay-control channel element (R-CCE) of a relay-physical downlink control channel (R-PDCCH) via an explicit signaling method or implicit signaling method. In the event the base station reports via an explicit signaling method, the repeater receives, from the base station, information on the aggregation level of R-CCE which is a transmission unit of R-PDCCH, wherein the information contains control information for the repeater. Then, the repeater decodes an R-PDCCH region on an R-CCE aggregation level basis in accordance with the received R-CCE aggregation level information. | 07-12-2012 |
20120182950 | METHOD AND APPARATUS FOR TRANSCEIVING SCHEDULING SIGNALS IN A MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method for transceiving scheduling signals in a multi-carrier wireless communication system, comprising a step of transmitting, via a predetermined downlink component carrier, a PDSCH transmission scheduling signal on one or more downlink component carriers and/or a PUSCH transmission scheduling signal on one or more uplink component carriers; and a step of transceiving the PDSCH and/or the PUSCH in accordance with the scheduling signals. The scheduling signals can be defined to the same size in a PDCCH transmission region of said predetermined downlink component carrier in the event different MIMO transmission modes are applied to the PDSCH transmission or the PUSCH transmission, or in the event said one or more downlink component carriers or said one or more uplink component carriers have different bandwidths. | 07-19-2012 |
20120182957 | METHOD FOR TRANSMITTING A SOUNDING REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method in which user equipment transmits a non-periodic sounding reference signal in a wireless communication system. In detail, the method comprises: a step of receiving a downlink control channel from a base station; a step of checking carrier indication field (CIF) information of a downlink control information (DCI) format contained in the downlink control channel; and a step of transmitting a non-periodic sounding reference signal to the base station in accordance with the CIF information, wherein said CIF information comprises a triggering message of the non-period sounding reference signal. | 07-19-2012 |
20120182959 | METHOD AND APPARATUS FOR TRANSCEIVING DATA IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and apparatus for transceiving data in a wireless communication system. A method for receiving data in a wireless communication system according to one aspect of the present invention is configured such that a base station receives, from a mobile station, a signal including information and data on the transmission mode which the mobile station has selected in accordance with a channel status, and decodes the data in accordance with the transmission mode. | 07-19-2012 |
20120213147 | REFERENCE SIGNAL TRANSMISSION METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - The present invention provides a reference signal transmission method and apparatus by a base station in a wireless communication system including a relay station. The base station generates a plurality of relay-physical downlink control channel (R-PDCCH) reference signals for the demodulation of an R-PDCCH which is a control channel for the relay station relative to each of a plurality of layers, maps the plurality of R-PDCCH reference signals with R-PDCCH regions included in a relay zone within at least one resource block according to a predetermined reference signal pattern, and transmits at least one resource block through a plurality of antenna ports. | 08-23-2012 |
20120213196 | METHOD AND APPARATUS FOR EFFICIENT CONTENTION-BASED TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly to a method and apparatus for efficient contention-based transmission in a wireless communication system. The method for performing contention-based transmission in a wireless communication system according to one embodiment of the present invention comprises: setting a radio resource control (RRC) connection with a receiver end where the contention-based transmission is received; setting a resource area for the contention-based transmission to allow a collision with other transmission; and transmitting at least one of the data and control information on the resource area, wherein the resource area for the contention-based transmission can be hopped on a physical resource. | 08-23-2012 |
20120218952 | TRANSMISSION METHOD OF DOWNLINK SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND TRANSMISSION APPARATUS THEREFOR - The present invention provides a method for a base station to transmit a downlink signal in a wireless communication system, the method comprising: allocating a resource to a downlink signal; and transmitting the downlink signal using the allocated resource. In the downlink signal transmission method and apparatus thereof, a resource for transmitting a Physical Downlink Shared Channel (PDSCH) among the downlink signals is allocated from a specific OFDM symbol that is fixed within a subframe. | 08-30-2012 |
20120218964 | RELAY NODE DEVICE FOR RECEIVING CONTROL INFORMATION FROM A BASE STATION AND METHOD THEREFOR - The present invention relates to a relay node device for receiving control information from a base station and a method therefor. The relay node device according to the present invention comprises: a receiver, which receives information about an area where a relay-physical downlink control channel (R-PDCCH), the channel for transmitting control information for the relay node from a base station, is allocated; a processor, which searches for at least one R-PDCCH for the relay node based on the R-PDCCH allocation information received; and an R-PDCCH receiver, which receives the at least one R-PDCCH from the fourth symbol of the first slot in a downlink backhaul subframe of the area where the at least one R-PDCCH searched for by the processor has been allocated. | 08-30-2012 |
20120224535 | TERMINAL DEVICE FOR TRANSMITTING A POWER HEADROOM REPORT IN A MULTI-CARRIER COMMUNICATION SYSTEM, AND METHOD FOR SAME - Disclosed is a terminal device for transmitting a power headroom report (PHR) in a multi-carrier communication system, and a method for same. The terminal device for transmitting a power headroom report (PHR) in a multi-carrier communication system comprises a transmitter and a processor. The transmitter transmits, to a base station, a power headroom report for one or more active component carriers allocated to user equipment from among multiple carriers. The processor controls the transmitter such that the transmitter transmits the power headroom report including a first type of power headroom information calculated using the power value of a physical uplink shared channel (PUSCH) of the main component carrier among the active component carriers, and a second type of power headroom information calculated using the power value of the PUSCH and the power value of a physical uplink control channel (PUCCH) of the main component carrier. | 09-06-2012 |
20120230239 | TERMINAL DEVICE FOR RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM FOR SUPPORTING A PLURALITY OF COMPONENT CARRIERS AND METHOD THEREOF - Disclosed are a terminal device for receiving a signal in a wireless communication system for supporting a plurality of component carriers and a method thereof. In the terminal device for receiving the signal in the system for supporting the component carriers, a receiver receives a Physical Downlink Control Channel (PDCCH) including control information of a first type component carrier from a base station or a relay. A processor performs a decoding operation or controls an operation in a slip mode on the basis of control information included in a PDCCH in a second type component carrier after a time corresponding to a particular time offset value passes from a transmission time point of the PDCCH. | 09-13-2012 |
20120230291 | METHOD AND APPARATUS FOR TRANSMITTING AN UPLINK OR DOWNLINK GRANT IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS UPLINK AND DOWNLINK MIMO SCHEMES - The present invention relates to a method for transmitting an uplink or downlink grant in a wireless communication system that supports uplink and downlink multiple input multiple output (MIMO) schemes. The method comprises: determining a downlink control information (DCI) format for an uplink or downlink grant to generate control information: attaching a cyclic redundancy check (CRC) for detecting an error in the created control information; and channel-coding the CRC-attached control information, wherein the control information comprises a bit flag for distinguishing whether the grant is an uplink grant or a downlink grant. | 09-13-2012 |
20120236816 | METHOD AND APPARATUS FOR TRANSCEIVING DATA VIA A CONTENTION-BASED PHYSICAL UPLINK DATA CHANNEL - Disclosed are a method and apparatus for transceiving data via a contention based physical uplink data channel. A terminal apparatus, which transmits data via a contention based physical uplink data channel, comprises: a transmitter which transmits data via a contention based physical uplink data channel and scheduling request information via a scheduling request channel simultaneously or consecutively to a base station; a receiver which receives a physical hybrid-ARQ indicator channel (PHICH) or an uplink (UL) grant message from the base station; and a processor which decodes the physical hybrid-ARQ indicator channel (PHICH) or the uplink (UL) grant message to determine whether an ACK signal or a NACK signal is indicated. Here, the scheduling request channel can be a specific channel allocated to the terminal apparatus so as to discriminate the terminal from other terminal apparatuses. | 09-20-2012 |
20120243498 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A SIGNAL IN A WIRELESS COMMUNICATION SYSTEM THAT SUPPORTS PLURAL COMPONENT CARRIERS - The present invention relates to a method for receiving a terminal signal in a wireless communication system that supports plural component carriers, the method comprising: receiving a subframe including a plurality of OFDM symbols from a base station (BS); and receiving identification information indicative of a particular component carrier, from one or more consecutive OFDM symbols located at the front of the subframe, wherein the identification information indicative of the particular component carrier includes a carrier offset value with respect to a reference component carrier. | 09-27-2012 |
20120243499 | METHOD FOR TRANSMITTING CONTROL INFORMATION IN A CARRIER AGGREGATION SYSTEM, RECEIVING METHOD, AND TERMINAL - A method of transmitting control information in a carrier aggregation system is provided. The method includes: transmitting bandwidth information of a component carrier; configuring downlink control information including an additional indication field and an information field; mapping the downlink control information in any one of containing units having a plurality of predetermined different bit sizes in accordance with the bandwidth information; and transmitting the downlink control information mapped to any one of the containing units, wherein the information field is any one of a plurality of control information formats applicable to the component carrier, and the additional indication field includes information indicating a specific control information format to which the information field corresponds among the plurality of control information formats. Accordingly, the number of blind decoding attempts of a user equipment can decrease in a carrier aggregation system. Therefore, power consumption of the user equipment can decrease, and a decoding rate can increase. | 09-27-2012 |
20120250558 | METHOD AND APPARATUS FOR EFFICIENTLY MEASURING A CHANNEL IN A MULTI-CARRIER WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for efficiently measuring a channel in a multi-carrier wireless communication system. According to one embodiment of the present invention, a method in which a downlink receiving entity provides downlink channel measurement information for establishing component carriers in a multi-carrier wireless system, comprise the following steps: receiving, from a downlink transmitting entity, information on one or more downlink component carriers for which channel measurement for establishing CCs is to be performed; performing downlink channel measurement for one or more DL CCs; and reporting the result of the downlink channel measurement to the downlink transmitting entity, wherein said one or more downlink component carriers for which channel measurement is to be performed may contain a component carrier which is not allocated to the downlink receiving entity. | 10-04-2012 |
20120257553 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and an apparatus for transmitting a reference signal by a base station in a wireless communication system. The base station generates a channel state information (CSI) reference signal (RS) for each of a plurality of layers, performs mapping the plurality of CSI-RSs to a resource element set constituted by a plurality of resource elements(REs) in a subframe and transmits the subframe with the plurality of mapped CSI-RSs. The plurality of resource elements constituting the resource element set are resource elements that are arranged with constant subcarrier spacing in two neighboring orthogonal frequency division multiplexing (OFDM) symbols, and the subframe has an extended cyclic prefix (CP) structure including 12 OFDM symbols. | 10-11-2012 |
20120269113 | APPARATUS FOR TRANSMITTING AND RECEIVING UPLINK BACKHAUL SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND METHOD THEREOF - Disclosed are an apparatus for transmitting and receiving an uplink backhaul signal in a wireless communication system and a method thereof. The method for receiving the uplink backhaul signal from a relay station in a base station, comprises the step of receiving a signal transmitted through an uplink backhaul sub-frame of an index N in the relay station using an uplink sub-frame of an index N or an index N+1 in the base station. The base station receives the signal transmitted from the relay station in the uplink sub-frame of the index N or the index N+1 of the base station at the delayed timing corresponding to a propagation delay value of the signal according to the distance between the relay station and the base station from a transmitting time point. | 10-25-2012 |
20120269138 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting a signal via physical uplink control channel (PUCCH) in a wireless communication system, and to an apparatus for the method, wherein the method is configured such that a terminal transmits a signal via the PUCCH and multiple antennas, and comprises the following steps: obtaining a first modulated symbol sequence from control information; performing a spreading process on modulated symbols corresponding to each of the slots in the PUCCH from among the first modulated symbol sequence, such that the modulated symbols corresponding to the respective single carrier frequency division multiplexing (SC-FDMA) symbols in the relevant slot, so as to obtain a plurality of spread second modulated symbol sequences corresponding to the respective SC-FDMA symbols in each slot; and transmitting, in the relevant SC-FDMA symbols in the PUCCH, the plurality of spread second modulated symbol sequences via multiple antennas, wherein resources used in the transmission via the PUCCH are orthogonal to one another between antenna ports. | 10-25-2012 |
20120281625 | METHOD FOR TRANSMITTING A SOUNDING REFERENCE SIGNAL IN A WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR SAME - The present invention relates to a method in which user equipment transmits a non-periodic sounding reference signal in a wireless communication system. In detail, the method comprises: a step of receiving a downlink control channel from a base station; a step of decoding a downlink control information (DCI) format contained in the downlink control channel; a step of checking a non-periodic sounding reference signal transmission instruction in the DCI format; and a step of transmitting a non-periodic sounding reference signal to the base station in accordance with the transmission instruction. Preferably, if the downlink control channel is received via an n | 11-08-2012 |
20120287878 | CROSS-CARRIER SCHEDULING METHOD OF UPLINK IN CARRIER AGGREGATION SYSTEM, AND TERMINAL - An uplink cross-carrier scheduling method in a carrier aggregation system is provided. The method includes: receiving information for an uplink component carrier (UL CC) monitoring set from a base station; receiving control information through a downlink component carrier (DL CC) determined on the basis of the information for the UL CC monitoring set; and transmitting an uplink signal to the base station on the basis of the control information. | 11-15-2012 |
20120294252 | METHOD FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM USING MULTIPLE CARRIERS - The present invention relates to a method in which a terminal transmits uplink control information in a wireless communication system using multiple carriers. The method comprises the following steps: receiving, from a base station, indication information that indicates whether or not to use multiple uplink control resources; determining a first uplink control resource on the basis of a specific control channel element (CCE) index of the CCE received from the base station; and, if the indication information indicates to use multiple uplink control resources, applying a predetermined rule to the specific CCE index to determine a second uplink control resource. | 11-22-2012 |
20120294268 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting uplink control information in a wireless communication system is disclosed. A method for transmitting uplink control information in a mobile station of a wireless communication system includes performing reverse repetition coding with respect to first uplink control information, and performing joint coding with respect to the reverse repetition coded first uplink control information and second uplink control information. The first uplink control information has higher priority than the second uplink control information. | 11-22-2012 |
20120294272 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving one or more physical downlink shared channels (PDSCHs); and transmitting ACK/NACK for said one or more PDSCHs via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the type of the carrier in which said one or more PDSCHs are received into account. | 11-22-2012 |
20120300726 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH. | 11-29-2012 |
20120300741 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving a physical downlink control channel (PDCCH); receiving a physical downlink shared channel (PDSCH) indicated by the PDCCH; and transmitting ACK/NACK for the PDSCH via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the number of aggregated carriers into account. | 11-29-2012 |
20120307758 | APPARATUS AND METHOD FOR PERFORMING AN UPLINK HARQ IN A WIRELESS COMMUNICATION SYSTEM - Provided are an apparatus and method of performing an uplink hybrid automatic repeat request (HARQ) in a wireless communication system. A terminal transmits a transport block to a base station via a physical uplink shared channel (PUSCH) using uplink resource allocation and receives an ACK/NACK signal for the transport block from the base station via a physical hybrid-ARQ indicator channel (PHICH). A PHICH resource used for transmitting the PHICH is identified from a PUSCH resource used for transmitting the PUSCH, and the PUSCH resource is mapped to the PHICH resource according to an uplink element carrier through which the transport block is transmitted. | 12-06-2012 |
20120307760 | METHOD AND APPARATUS FOR TRANSMITTING UPLINK CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention provides a method and apparatus for transmitting uplink control information (UCI) by user equipment in a wireless communication. The user equipment performs channel coding on information bits of the UCI to generate encoding information bits; performs modulation on the thus generated encoding information bits to generate complex modulation symbols; spreads the complex modulation symbols block-wise to a plurality of single carrier-frequency division multiple access (SC-FDMA) symbols based on an orthogonal sequence; and transmits the spread complex modulation symbols to a base station. | 12-06-2012 |
20120320813 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method, wherein the method comprises the following steps: detecting one or more control channels from a plurality of component carrier; receiving one or more data indicated by the downlink control information loaded onto said one or more control channels; and transmitting ACK/NACK information relating to said one or more data via a physical uplink control channel (PUCCH), wherein each of the pieces of downlink control information includes count information which is set in connection with the entire control channel actually allocated to a terminal. | 12-20-2012 |
20120320839 | METHOD AND APPARATUS FOR PERFORMING A HARQ IN A WIRELESS COMMUNICATION SYSTEM - The present invention provides a method and apparatus for performing a HARQ in a wireless communication system. In the method for performing a HARQ according to the present invention, a terminal transmits an uplink data over a PUSCH (Physical Uplink Shared Channel); and receives an ACK/NACK (Acknowledgement/Non-Acknowledgement) signal over a Physical Hybrid-ARQ Indicator Channel (PHICH) corresponding to the PUSCH, with the signal indicating whether the uplink data is received through a plurality of layers. Here, downlink resources to which a PHICH is mapped for each of the plurality of layers do not overlap each other. Those downlink resources to which a PHICH is mapped for each of the plurality of layers can be determined based on different cyclic shift values that are allocated to the plurality of the layers, respectively. | 12-20-2012 |
20120320880 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting control information via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining, from the first modulated symbol sequence, a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a discrete Fourier transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH. | 12-20-2012 |
20120327783 | METHOD AND DEVICE FOR A HYBRID AUTOMATIC REPEAT REQUEST IN A MULTI-CARRIER SYSTEM - A method of performing hybrid automatic repeat request (HARQ) in a carrier aggregation system is provided. The method includes: monitoring a downlink (DL) grant for initial DL data transmission in a first DL component carrier (CC); receiving initial DL data through a second DL CC indicated by the DL grant; decoding the initial DL data; transmitting a not-acknowledgment (NACK) signal when decoding of the initial DL data fails; monitoring a DL grant for retransmission of the DL data in the first DL CC; and receiving DL data retransmitted through the second DL CC, wherein the second DL CC is any one of a plurality of DL CCs having a predetermined link relation with the first DL CC, and the DL grant for the initial transmission includes a carrier indication field indicating the second DL CC and resource allocation information for the initially transmitted DL data. | 12-27-2012 |
20130010714 | METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PDCCH USING DCI HAVING ADJUSTED SIZE - The present invention relates to a method for adjusting a size of an information bit used in a control channel and an apparatus for performing the same. In addition, the present invention relates to a method for searching for a control channel including an information bit having an adjusted size. A method for receiving a physical downlink control channel (PDCCH) in a wireless access system for supporting multi-carriers as one embodiment of the present invention comprises the steps of: performing blind decoding in a search space allocated in a terminal to search for a PDCCH; and receiving the PDCCH including downlink control information (DCI) having a size adjusted in the search space. At this time, the size of the DCI can be adjusted by considering a bandwidth allocated in the terminal, a transmission mode of a component carrier (CC) allocated in the terminal, and the number of antennas of the terminal. | 01-10-2013 |
20130021984 | METHOD FOR WIRELESS COMMUNICATION BETWEEN A USER DEVICE AND A BASE STATION IN A WIRELESS COMMUNICATION SYSTEM SUPPORTING UPLINK AND DOWNLINK MULTI CARRIERS, AND A DEVICE FOR IMPLEMENTING THE METHOD - A method for wireless communication supporting uplink and downlink multi carriers Includes performing initial access through one of at least two downlink component carriers among multiple downlink component carriers including the at least two downlink component carriers through which the user equipment is allowed to perform the initial access; and transmitting via an uplink component carrier allocated to the user equipment by using a carrier identifier, wherein the carrier identifier is applied to the uplink component carrier and is obtained from the downlink component carrier through which the initial access is performed, and wherein the system pre-defines one-to-one correspondence between multiple downlink component carriers and multiple uplink component carriers, and wherein the downlink component carrier through which the initial access is performed and the uplink component carriers allocated to the user equipment do not match the one-to-one correspondence pre-defined by the system. | 01-24-2013 |
20130022019 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control information through a PUCCH in a wireless communication system and an apparatus thereof, comprising the steps of: spreading modulation symbol sets to first slot, by using a first code; spreading modulation symbol sets to second slot, by using a second code, wherein the length of the second code is varied according to the number of the SC-FDMA symbols for PUCCH transmission. | 01-24-2013 |
20130044662 | METHOD AND APPARATUS FOR PERFORMING POWER CONTROL BY TERMINAL IN WIRELESS COMMUNICATION SYSTEM USING MULTIPLE CARRIERS - The present invention relates to a terminal in a wireless communication system that supports multiple carriers, the terminal comprising: a receiving module that receives, from a base station, control information which indicates whether to operate hybrid automatic repeat request (HARQ) process-based multiple carriers; and a process that controls to allow the multiple carriers to be received in a section at which a particular HARQ process indicated in the control information is activated. | 02-21-2013 |
20130058291 | METHOD AND APPARATUS FOR PERFORMING CROSS-CARRIER SCHEDULING FOR SPS - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus in which a base station transmits a signal to a relay in a wireless communication system. A method in which a terminal receives a downlink signal in a wireless communication system that supports carrier aggregation comprises: a step of receiving, on a first carrier, a physical downlink control channel (PDCCH) having no carrier indication information; and a step of receiving a physical downlink shared channel (PDSCH) using the scheduling information carried on the PDCCH, wherein the PDSCH is received on the first carrier in the event the PDCCH is a non-semi-persistent scheduling (SPS) PDCCH, and the PDSCH is received on a second carrier different from the first carrier in the event the PDCCH is an SPS PDCCH. | 03-07-2013 |
20130058306 | METHOD AND APPARATUS FOR TRANSMITTING APERIODIC SOUNDING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting an aperiodic sounding reference signal (SRS) in a wireless communication system is provided. The method include receiving a downlink control information (DCI) format including a triggering signal for triggering a transmission of an aperiodic SRS from a base station (BS) via a physical downlink control Channel (PDCCH), blind-decoding the PDCCH in a UE-specific search space, and transmitting the aperiodic SRS triggered based on the triggering signal to the BS. | 03-07-2013 |
20130064172 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - Disclosed are an apparatus and a method for transmitting/receiving control information in a wireless communication system. In a repeater according to the present invention, a receiving antenna can receive control information for a hybrid automatic repeat reQuest ACKnowledgement (HARQ ACK) feedback on the data transmission of a base station from the base station through higher layer signaling. On the basis of the control information, a processor can determine a resource in an upper link control channel to be used for the transmission of the HARQ feedback. A transmitting antenna can transmit the HARQ feedback to the base station through the resource that has been determined. | 03-14-2013 |
20130064193 | METHOD FOR DECODING CONTROL INFORMATION OF TERMINAL IN CARRIER AGGREGATION SYSTEM AND TERMINAL THEREOF - Provided is a method of decoding control information of a terminal in a carrier aggregation system. The method includes: receiving downlink control information including a carrier indication field from a base station; and decoding the downlink control information, wherein the downlink control information includes at least two or more fields, and a component carrier indicated by a value of the carrier indication field is determined according to a value of a specific field among the at least two or more fields. | 03-14-2013 |
20130070690 | COMMUNICATION METHOD OF TERMINAL IN CARRIER AGGREGATION SYSTEM, AND TERMINAL - The present invention provides a communication method of a terminal in a carrier aggregation system. The method comprises: determining indexes relative to a plurality of downlink component carriers and a plurality of uplink component carriers; receiving, from a base station, DCI through at least one downlink component carrier among the plurality of downlink component carriers; and transmitting an uplink signal to the base station through an uplink component carrier determined on the basis of DCI, wherein the DCI includes an index that indicates the uplink component carrier which transmits the uplink signal among the plurality of uplink component carriers. | 03-21-2013 |
20130121279 | METHOD AND APPARATUS FOR TRANSMITTING APERIODIC SOUNDING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - A method and apparatus for transmitting an aperiodic sounding reference signal (SRS) in a wireless communication system is provided. The method include receiving a power offset parameter for an aperiodic SRS set by a base station (BS) through an higher layer, setting transmission power of the aperiodic SRS based transmission power on the power offset parameter, and transmitting the aperiodic SRS to the BS based on the set transmission power of the aperiodic SRS. | 05-16-2013 |
20130129013 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information. | 05-23-2013 |
20130136099 | SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING - A symbol mapping method for repetition coding is disclosed. The symbol mapping method comprises performing repetition coding on codeword to output repeated codeword symbols, and mapping the repeated codeword symbols with subcarriers located in different localized resource blocks. According to the embodiments of the present invention, it is possible to obtain maximum reliability in a receiving side by mapping codeword bits with subcarriers to reduce the number of bits having low reliability when a transmitting side uses repetition coding. Also, it is possible to improve decoding throughput and obtain channel diversity. | 05-30-2013 |
20130139020 | METHOD OF TRANSMITTING DATA USING CONSTELLATION REARRANGEMENT - A data retransmission method using hybrid automatic repeat request (harq) includes transmitting a data block, receiving a retransmission request signal for the data block, generating a retransmission block by performing swapping or inversion between bits constituting the data block according to the retransmission request signal, and transmitting the retransmission block. | 05-30-2013 |
20130155969 | COMMUNICATION METHOD FOR A TERMINAL IN A MULTI-CARRIER SYSTEM USING A PLURALITY OF COMPONENT CARRIERS - Provided is a communication method of a terminal in a multi-carrier system using a plurality of component carriers. The method includes: receiving a reconfiguration message indicating whether downlink control information (DCI) includes a carrier indication field (CIF); receiving a plurality of DCIs indicating a resource used to transmit a reconfiguration complete message in response to the reconfiguration message; and transmitting the reconfiguration complete message on the basis of resource allocation information included in DCI which is successfully decoded among the plurality of DCIs, wherein the plurality of DCIs include first DCI used before the CIF of the DCI is reconfigured by the reconfiguration message and second DCI used after the CIF of the DCI is reconfigured by the reconfiguration message. | 06-20-2013 |
20130163525 | METHOD FOR SETTING A CARRIER INDICATION FIELD IN A MULTI-CARRIER SYSTEM - Disclosed is a method for setting a carrier indication field indicating an element carrier in a multi-carrier system using a plurality of element carriers. The method includes: transmitting a value of a carrier indication field (CIF) and first CIF setting information that indicates a first mapping relationship between element carriers; transmitting downlink control information (DCI) including a carrier indication field; and transmitting a value of a CIF and second CIF setting information that indicates a second mapping relationship between element carriers, wherein the carrier indication field is a field indicating any one of the plurality of element carriers, and at least one element carrier is mapped with the same carrier indication field value in the first and second mapping relationships. | 06-27-2013 |
20130235827 | METHOD FOR ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 09-12-2013 |
20130336197 | METHOD AND APPARATUS FOR WIRELESS RESOURCE ALLOCATION FOR RELAY IN WIRELESS COMMUNICATION SYSTEM - According to one embodiment, a method of allocating a radio resource for a relay station includes: transmitting configuration information through a higher layer signal, the configuration information including information regarding an OFDM symbol at which a relay zone begins; allocating the relay zone to the relay station in a subframe based on the configuration information; and transmitting a relay control channel to the relay station in the relay zone. The subframe includes OFDM symbols in a time domain and subcarriers in a frequency domain. The relay zone includes a subset of the OFDM symbols in the time domain and a portion of the subcarriers in the frequency domain. The configuration information indicates an OFDM symbol from among a second OFDM symbol, a third OFDM symbol and a fourth OFDM symbol. The relay control channel is transmitted from the fourth OFDM symbol of the subframe. | 12-19-2013 |
20140016605 | METHOD AND DEVICE FOR ALLOCATING A BROADCAST CHANNEL IN A WIRELESS MOBILE COMMUNICATION SYSTEM - A method for receiving a superframe header at a mobile station in a wireless mobile communication system is disclosed. The method comprises receiving a sub-frame including the superframe header and a first data channel and decoding the received superframe header. Herein, the superframe header is located within a predetermined physical frequency band and the pre-determined physical frequency band includes a synchronization channel. | 01-16-2014 |
20140056260 | METHOD AND APPARATUS FOR SELECTING MODULATION AND CODING SCHEME (MCS) INDEX BASED ON FREQUENCY SELECTIVITY - A method of selecting a modulation and coding scheme (MCS) index in a wireless communication system is disclosed. More specifically, the method includes measuring a frequency selectivity of a receiving channel, selecting a MCS index having a coding rate below a prescribed coding rate threshold value if the measured frequency selectivity is greater than or equal to a specified frequency selectivity threshold, and selecting the MCS index having the coding rate above or equal to the prescribed coding rate threshold value if the measured frequency selectivity is less than the specified frequency selectivity threshold. | 02-27-2014 |
20140071863 | APPARATUS AND METHOD FOR DATA TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A data transmitter for a wireless communication system is provided. Said apparatus comprises an OFDM (Orthogonal Frequency Division Multiplexing) symbol generating part that generates a plurality of OFDM symbols, a frame configuration part that configures a frame comprising includes said plurality of OFDM symbols, and a transmission part that transmits said plurality of OFDM symbols based on said frame that has been configured. Said frame is divided into a plurality of sub-frames, the number of OFDM symbols that are included in an optional sub-frame is any one of 5, 6, and 7, and the bandwidth of said wireless communication system is 8.75 MHz. Based on a new frame configuration, new parameter requirements may be satisfied taking backward compatibility into account. | 03-13-2014 |
20140086358 | METHOD AND APPARATUS FOR INFORMATION TRANSMISSION IN A RADIO COMMUNICATION SYSTEM - A method of transmitting, by a transmitter, information in a wireless communication system, the method includes generating first and second symbols; generating first and second transmit vectors on the basis of an Alamouti code from the first and second symbols; and transmitting the first transmit vector through a first antenna and transmitting the second transmit vector through a second antenna. The first transmit vector consists of a first transmit symbol and a second transmit symbol. The second transmit vector consists of a third transmit symbol and a fourth transmit symbol. The first, second, third, and fourth transmit symbols are transmitted based on first and second resource indexes. The first symbol is a first modulation symbol for first information, and the second symbol is a second modulation symbol for second information. | 03-27-2014 |
20140119297 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a signal via physical uplink control channel (PUCCH) in a wireless communication system and an apparatus for performing the method are provided. Control information bits are modulated to generate N1 modulation symbols, wherein N1 is twice a number of subcarriers in one resource block (RB). The modulation symbols are spread by using various orthogonal codes to generate a plurality of sequences and the generated plurality of sequences are transmitted using different slots of a subframe through different antenna ports, each sequence of the plurality of sequences being mapped on a corresponding single carrier frequency division multiple access symbol in a corresponding slot. | 05-01-2014 |
20140119323 | METHOD AND APPARATUS FOR ALLOCATING AN UPLINK CARRIER FOR TRANSMITTING UPLINK CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for allocating an uplink carrier for transmitting uplink control information in a wireless communication system that supports carrier aggregation. According to one embodiment of the present invention, a method for transmitting uplink control information in a wireless communication system that supports carrier aggregation of M (M≧1) uplink component carriers comprises: a step of receiving setup information on a primary uplink component carrier, from among said M uplink component carriers, via which one or more pieces of uplink control information are to be transmitted; a step of multiplexing said one or more pieces of uplink control information; and a step of transmitting the multiplexed uplink control information through the primary uplink component carrier. | 05-01-2014 |
20140286259 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNCATION SYSTEM - The present invention relates to a wireless communication system. More specifically, the present invention relates to a method for transmitting control signal via a PUCCH in a wireless communication system, and to an apparatus for the method, wherein the method comprises the following steps: joint-coding a plurality of pieces of control information to obtain a single codeword; obtaining a first modulation symbol sequence from the single codeword; obtaining, from the first modulation symbol sequence, a plurality of second modulation symbol sequences corresponding to each slot in the PUCCH; cyclically shifting the plurality of second modulation symbol sequences in a time domain to obtain a plurality of third modulation symbol sequences; performing a discrete Fourier transform (DFT) preceding process on the plurality of third modulation symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH. | 09-25-2014 |
20140293956 | SYMBOL MAPPING METHOD FOR REPETITION CHANNEL CODING - A symbol mapping method for repetition coding is disclosed. The symbol mapping method comprises performing repetition coding on codeword to output repeated codeword symbols, and mapping the repeated codeword symbols with subcarriers located in different localized resource blocks. According to the embodiments of the present invention, it is possible to obtain maximum reliability in a receiving side by mapping codeword bits with subcarriers to reduce the number of bits having low reliability when a transmitting side uses repetition coding. Also, it is possible to improve decoding throughput and obtain channel diversity. | 10-02-2014 |
20140301321 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting a signal via physical uplink control channel (PUCCH) in a wireless communication system and an apparatus for performing the method are provided. Control information bits are modulated to generate N1 modulation symbols, wherein N1 is twice a number of subcarriers in one resource block (RB). The modulation symbols are spread by using various orthogonal codes to generate a plurality of sequences and the generated plurality of sequences are transmitted using different slots of a subframe through different antenna ports, each sequence of the plurality of sequences being mapped on a corresponding single carrier frequency division multiple access symbol in a corresponding slot. | 10-09-2014 |
20140334376 | APPARATUS FOR TRANSMITTING AND RECEIVING CONTROL INFORMATION AND SYSTEM INFORMATION FOR REPEATERS AND METHOD THEREOF - A method of transmitting control information for a relay node (RN) from an eNode B in a wireless communication system includes transmitting information on a resource region of at least one relay-physical downlink control channel (R-PDCCH) including the control information for the RN and interleaving mode information on an interleaving mode applied to the at least one R-PDCCH to the RN, wherein the resource region of the at least one R-PDCCH is RN-specifically configured. | 11-13-2014 |
20140355515 | METHOD AND APPARATUS FOR TRANSMITTING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY STATION - A method and an apparatus for demodulating a downlink control channel by a relay node (RN) in a wireless communication system. The method includes receiving cell-specific reference signals on at least one antenna port from a base station (BS); receiving user equipment (UE)-specific reference signals on at least one antenna port from the BS; and demodulating a relay physical downlink control channel (R-PDCCH) based on either the cell-specific reference signals or the UE-specific reference signals. A type of reference signals used to demodulate the R-PDCCH is configured by higher layers. | 12-04-2014 |
20140362804 | METHOD AND APPARATUS FOR THE TRANSMISSION OF A CONTROL SIGNAL IN A RADIO COMMUNICATION SYSTEM - The present invention provides a method and an apparatus for the transmission of control signal in a radio communication system. The method includes the steps of processing first control information on the basis of a first resource index to create a first control signal, processing second control information on the basis of a second resource index to create a second control signal, and transmitting the first control signal and the second control signal. | 12-11-2014 |
20150023286 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION - The present invention relates to a wireless communication system. More particularly, the present invention relates to a method for transmitting acknowledgement/negative ACK (ACK/NACK) in a wireless communication system which supports carrier aggregation, and to an apparatus for the method. A method in which a terminal transmits ACK/NACK in a wireless communication system that supports carrier aggregation comprises the following steps: receiving one or more physical downlink shared channels (PDSCHs); and transmitting ACK/NACK for said one or more PDSCHs via a physical uplink control channel (PUCCH). A PUCCH format for transmitting ACK/NACK is selected by taking the type of the carrier in which said one or more PDSCHs are received into account. | 01-22-2015 |
20150049718 | METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM - A method for transmitting control information via a PUCCH in a wireless communication system and an apparatus for performing the method are provided, the method including joint-coding a plurality of pieces of control information to obtain a single code word; obtaining a first modulated symbol sequence from the single code word; obtaining a plurality of second modulated symbol sequences corresponding to each slot in the PUCCH from the first modulated symbol sequence; cyclically shifting the plurality of second modulated symbol sequences in a time domain to obtain a plurality of third modulated symbol sequences; performing a Discrete Fourier Transform (DFT) precoding process on the plurality of third modulated symbol sequences to obtain a plurality of complex symbol sequences in a frequency domain; and transmitting the plurality of complex symbol sequences via the PUCCH. | 02-19-2015 |
20150063198 | METHOD FOR ALLOCATING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM - A method of allocating control information in a wireless communication system is provided. The method includes: allocating essential control information of a first system to a first sub-frame in a frame including a plurality of sub-frames each of which comprises a plurality of orthogonal frequency-division multiplexing (OFDM) symbols; and allocating essential control information of a second system to an n | 03-05-2015 |