Patent application number | Description | Published |
20090070653 | METHOD OF TRANSMITTING DATA - A method of transmitting data in a wireless access system is disclosed. The method includes various processes of obtaining the number of code blocks in consideration of an error detection code which is to be attached to each code block, calculating the size of the code blocks, segmenting input data, and channel-coding the code blocks, thereby efficiently transmitting data. | 03-12-2009 |
20100050045 | METHOD OF GENERATING A PARITY CHECK MATRIX FOR LDPC ENCODING AND DECODING - A method of encoding input data using a low density parity check (LDPC) code or decoding the encoded data is disclosed. Each index of a model matrix is expanded to an index matrix which includes two or more indexes. Each index included in the index matrix means a specific sub-matrix, and can be replaced with a corresponding sub-matrix to generate a parity check matrix. | 02-25-2010 |
20100195662 | METHOD FOR SUB-PACKET GENERATION WITH ADAPTIVE BIT INDEX - A method of generating a sub-packet in consideration of an offset is disclosed. A method of generating a sub-packet in consideration of an offset, for re-transmission of a packet from systematic bits and parity bits stored in a circular buffer includes turbo-coding an input bitstream at a predetermined code rate and generating and storing the systematic bits and the parity bits in the circular buffer, and deciding a starting position of the sub-packet in the circular buffer in consideration of the offset for puncturing at least a portion of the systematic bits of the circular buffer. Accordingly, it is possible to efficiently decide the starting position of the sub-packet to be transmitted adaptively with respect to a variable packet length, improving a coding gain, reducing complexity and reducing a calculation amount. | 08-05-2010 |
20100218075 | APPARATUS AND METHOD FOR TRANSMITTING SIGNAL USING BIT GROUPING IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for transmitting a signal using a bit grouping method in a wireless communication system is disclosed. Interleaved subblocks are maintained, and output bit sequences are modulated in due order after bit grouping and bit selection. The bit grouping method is advantageous in that bit reliability is uniformly distributed. | 08-26-2010 |
20100260243 | MIMO CODEBOOK GENERATION - Particular codebook entries used for a MIMO system of a lower dimension (i.e., having a relatively low number of antennas) can be used to generate a codebook for a MIMO system of a higher dimension (i.e., having a relatively high number of antennas). The entries in rank 1 of the codebook related to the MIMO system having four transmit antennas are used to newly construct entries for rank 1 through rank 8 of two base matrices for a MIMO base codebook related to eight transmit antennas. | 10-14-2010 |
20100273497 | METHOD FOR MAPPING SUBBAND/MINIBAND IN WIRELESS COMMUNICATION SYSTEM AND AN APPARATUS THEREFOR - A method for mapping subband/miniband in a wireless communication system and apparatus therefore are disclosed. The present invention includes dividing the system frequency band into a plurality of physical resource units (PRUs) and mapping a plurality of the physical resource units to a subband physical resource unit (PRU | 10-28-2010 |
20100278106 | METHOD FOR TRANSMITTING CONTROL INFORMATION - A method for receiving control information for data reception at a specific user equipment in a communication system in which at least one data transmission mode is used to transmit data of the at least one UE is disclosed. The method receives the control information including a first field and a second field, in which the first field indicates a data transmission mode of the specific user equipment (UE) and the second field indicates a resource block via which the data is transmitted, and receives the data by decoding the control information. As a result, a method for constructing control information required for receiving control data of a localized-mode UE and a distributed-mode UE can be recognized. | 11-04-2010 |
20110060970 | METHOD OF PERFORMING INTERLEAVING AND DATA TRANSMISSION APPARATUS - A method of performing interleaving and a data transmission apparatus are disclosed, in which interleaving is performed for input data streams using bit reverse ordering (BRO) operation. A method of performing interleaving for input data streams comprises writing respective bits of the input data stream in a row direction of a memory matrix in accordance with the input order, performing row permutation for index of each row of the memory matrix using an R-bit (R is an integer) bit reverse ordering (BRO) operation, performing pruning for a row which satisfies a given condition, performing column permutation using BRO operation for index of each column of the memory matrix, and reading to output each bit in a column direction of the memory matrix where the column permutation has been performed. | 03-10-2011 |
20110310835 | Method For Mapping A Subband/Miniband In A Wireless Communication System, And Apparatus For The Same - The present application discloses a method for mapping a subband/miniband in a wireless communication system. Particularly, the method comprises the steps of: dividing a system frequency band into a plurality of physical resource units (PRU); mapping the plurality of physical resource units to physical resource units of a subband (PRUSB) in accordance with a 1 | 12-22-2011 |
20120039287 | TRANSMISSION METHOD OF DOWNLINK REFERENCE SIGNAL AND APPARATUS THEREOF - The present invention relates to a wireless communication system, and provides a method and an apparatus for transmitting a downlink reference signal in the wireless communication system. The method for enabling a base station to transmit the reference signal to a terminal using layers of 8 or less in accordance with one embodiment of the present invention comprises the steps of: transmitting data for the layers of 8 or less through a data domain of a downlink sub frame; and transmitting a reference signal for the layers of 8 or less on a fixed OFDM symbol of the downlink sub frame, wherein the reference signal is a DRS (Dedicated Reference Signal) which demodulates the data for the layers of 8 or less, and the reference signal for the layers of 8 or less is separated into 1st and 2nd groups, and reference signals of the 1st and 2nd groups can be multiplexed in a CDM (Code Division Multiplexing) method on one resource element, respectively. | 02-16-2012 |
20120082126 | RESOURCE ALLOCATION BITMAP CONFIGURATION METHOD IN A GROUP RESOURCE ALLOCATION METHOD - Disclosed are various group resource allocation methods used in a wireless access system. In one example of the present invention, a method for configuring a valid combination set for a resource allocation bitmap comprises the steps of: receiving, from a base station, a super frame header comprising HARQ burst data showing the HARQ burst size candidate set; receiving, from the base station, group configuration map data elements including control data for configuring a valid combination set; and configuring a valid combination set by using the HARQ burst data and the control data. | 04-05-2012 |
20140151991 | BOLTING STRUCTURE OF SUB-FRAME - A bolting structure of a sub-frame includes a reinforcer mounting the sub-frame through a side member. The reinforcer includes: a reinforcing member disposed to intersect with the side member in a cross shape and bolted, together with the side member, to a lower panel; an inner pipe disposed at the side member from surfaces interfacing between the reinforcing member and the side member; an outer pipe disposed at the reinforcing member from the surfaces interfacing between the reinforcing member and the side member and inserted into the sub-frame; and a bolt bolted to the inner pipe through the outer pipe and fixing the sub-frame. | 06-05-2014 |