Rate matching method and apparatus for polar code

    公开(公告)号:US11955992B2

    公开(公告)日:2024-04-09

    申请号:US17664491

    申请日:2022-05-23

    CPC classification number: H03M13/635 H03M13/13 H03M13/2792

    Abstract: Provided is a rate matching method and device for a Polar code. The method includes: concatenating K information bits and (N−K) frozen bits to generate a bit sequence of N bits, and encoding the bit sequence of N bits by means of a Polar code encoder with a generator matrix of size N×N to generate an initial bit sequence {S0, S1, . . . , SN−1} of N bits, where K and N are both positive integers and K is less than or equal to N; dividing a circular buffer into q parts, selecting bits from the initial bit sequence {S0, S1, . . . , SN−1} in a non-repeated manner, and writing the bits into the q parts of the circular buffer according to a predefined rule, where q=1, 2, 3 or 4; and sequentially selecting a bit sequence of a specified length from a predefined starting position in a bit sequence in the circular buffer and taking the bit sequence of the specified length as a bit sequence to be transmitted.

    METHODS, APPARATUS AND SYSTEMS FOR DETERMINING A TRANSPORT BLOCK SIZE IN A WIRELESS COMMUNICATION

    公开(公告)号:US20230300808A1

    公开(公告)日:2023-09-21

    申请号:US18125054

    申请日:2023-03-22

    CPC classification number: H04W72/0446 H04W72/23

    Abstract: Methods, apparatus and systems for determining a transport block size in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication device is disclosed. The method comprises: receiving control information from a wireless communication node, wherein the control information includes a plurality of transmission parameters related to transport blocks to be transmitted between the wireless communication device and the wireless communication node; calculating an intermediate transport block size (TBS) for the transport blocks based on the plurality of transmission parameters; modifying the intermediate TBS to generate a modified TBS in response to an event that the intermediate TBS is smaller than a threshold; and determining a final. TBS for the transport blocks based on a TBS that is closest to the modified TBS, among TBSs that are in a quantized set and not smaller than the modified TBS.

    Methods and apparatus for processing LDPC coded data

    公开(公告)号:US11728830B2

    公开(公告)日:2023-08-15

    申请号:US17566846

    申请日:2021-12-31

    CPC classification number: H03M13/255 H03M13/118 H03M13/2707 H03M13/6508

    Abstract: Methods and Apparatus for processing data encoded by low density parity check (LDPC) in a communication system are disclosed herein. In one embodiment, a method performed by a first node is disclosed. The method comprises: encoding an information bit sequence based on an LDPC coding scheme to obtain an encoded bit sequence; generating a master bit sequence based on the encoded bit sequence; selecting a subset of the master bit sequence according to a rate matching rule to obtain a rate matched bit sequence; interleaving the rate matched bit sequence according to a predetermined index sequence to obtain a to-be-transmitted bit sequence; and transmitting the to-be-transmitted bit sequence to a second node.

    Methods, apparatus and systems for determining a transport block size in a wireless communication

    公开(公告)号:US11638251B2

    公开(公告)日:2023-04-25

    申请号:US17135288

    申请日:2020-12-28

    Abstract: Methods, apparatus and systems for determining a transport block size in a wireless communication are disclosed. In one embodiment, a method performed by a wireless communication device is disclosed. The method comprises: receiving control information from a wireless communication node, wherein the control information includes a plurality of transmission parameters related to transport blocks to be transmitted between the wireless communication device and the wireless communication node; calculating an intermediate transport block size (TBS) for the transport blocks based on the plurality of transmission parameters; modifying the intermediate TBS to generate a modified TBS in response to an event that the intermediate TBS is smaller than a threshold; and determining a final TBS for the transport blocks based on a TBS that is closest to the modified TBS, among TBSs that are in a quantized set and not smaller than the modified TBS.

    Method and apparatus for quasi-cyclic low-density parity-check

    公开(公告)号:US11626888B2

    公开(公告)日:2023-04-11

    申请号:US17510216

    申请日:2021-10-25

    Abstract: Provided is a design method and apparatus for quasi-cyclic low-density parity-check (LDPC) encoding. The method includes: performing LDPC encoding on a K-bit information sequence to be encoded according to a parity check matrix of a quasi-cyclic LDPC code to obtain an N-bit LDPC encoded sequence, where the parity check matrix is determined according to a basic matrix and a lifting size Z, and the basic matrix is determined according to the lifting size Z and a coefficient matrix, where K is a positive integer, N is an integer greater than K, and Z is a positive integer.

    CONTROL CHANNEL MONITORING PROCEDURE

    公开(公告)号:US20230087310A1

    公开(公告)日:2023-03-23

    申请号:US18059156

    申请日:2022-11-28

    Abstract: Methods, systems and apparatus for wireless communication are described. One example method of wireless communication includes selecting, by a wireless device, a monitoring behavior for monitoring a control channel. The method further includes, monitoring, by the wireless device, the control channel according to the monitoring behavior. The monitoring behavior may include a skipping operation during which monitoring is disabled.

    Channel quality indicator information transmission and reception

    公开(公告)号:US11496239B2

    公开(公告)日:2022-11-08

    申请号:US17038683

    申请日:2020-09-30

    Abstract: Described are methods, systems and devices for the transmission and reception of channel quality indicator (CQI) information over an physical channel to facilitate, for example, meeting block error rate requirements in emerging systems. One example method includes transmitting an index associated with a quality of the physical channel, where the index corresponds to an entry in a parameter table set. Another example method includes receiving an index associated with the quality of the downlink physical channel, and transmitting a plurality of data blocks, where contents of the plurality of data blocks are encoded and modulated using a code rate and a modulation scheme, respectively, which are selected from an entry in the parameter tables corresponding to the index. In both exemplary methods, one or more parameter tables include at least three entries comprising code rates having values less than or equal to 120/1024.

    POWER SAVING TECHNIQUES
    120.
    发明申请

    公开(公告)号:US20220338120A1

    公开(公告)日:2022-10-20

    申请号:US17853533

    申请日:2022-06-29

    Abstract: Techniques are described to enable a user equipment (UE) to save power consumption during monitoring of a control channel. An example technique includes determining, by a communication device, a monitoring mode for the control channel based on at least one of a reception of a first predefined signaling and a first timer, wherein the first predefined signaling includes a search space set group switch indication. The technique further includes monitoring the control channel based on the monitoring mode after an apply duration.

Patent Agency Ranking