Polar codes with dynamic cyclic redundancy check configuration

    公开(公告)号:US12155478B2

    公开(公告)日:2024-11-26

    申请号:US18175226

    申请日:2023-02-27

    Abstract: Methods, systems, and devices for wireless communications are described. Cyclic redundancy check (CRC) bits may be appended to a set of information bits on a per-group basis prior to encoding using an error correcting code. The amount of CRC bits appended to each group of information bits may be based on the priority of the group of information bits. For example, the priority may be based on the type of information conveyed by the group of information bits. For example, for a video stream, information bits conveying low frequency information may have a higher priority than information bits conveying high frequency information, as the low frequency bits may be more important to user perception/experience of the video. The transmitting device and the receiving device may negotiate the CRC configuration (e.g., the CRC bits per-group and the locations of the groups) so that the receiving device can verify the information bits.

    WIDEBAND MICRO SLEEP TECHNIQUES
    5.
    发明申请

    公开(公告)号:US20230007582A1

    公开(公告)日:2023-01-05

    申请号:US17366982

    申请日:2021-07-02

    Abstract: Methods, systems, and devices for wireless communications are described. In a wireless communications system, a first user equipment (UE) may receive a message from a second UE via a set of one or more antennas, where a first symbol period and a second symbol period of the message include a duplicated signal, and the first symbol period is immediately prior to the second symbol period in a time domain. The first UE may calculate a correlation between first data included in the first symbol period and second data included in the second symbol period of the message for each antenna of the set of one or more antennas. In some cases, the first UE may power down at least one radio frequency chain based on the result of the calculated correlation satisfying a threshold value.

    Wireless communication with non-punctured symbols

    公开(公告)号:US11540178B2

    公开(公告)日:2022-12-27

    申请号:US16705067

    申请日:2019-12-05

    Abstract: A transmitting device maps complex valued symbols in sequence to physical resource blocks for a sidelink transmission. The transmitting device reserves a first symbol of a subframe, where resource elements in the first symbol of the subframe are not considered in mapping the complex valued symbols to the physical resource blocks for the sidelink transmission. The transmitting device transmits the sidelink transmission after mapping the complex valued symbols to the physical resource blocks. A receiving device receives the sidelink transmission and decodes the sidelink transmission to determine complex valued symbols that are mapped in sequence to physical resource blocks of the sidelink transmission, where the complex valued symbols are not mapped to resource elements in a first symbol of a subframe.

    Wireless device transmit and receive capability in sidelink control information

    公开(公告)号:US11444720B2

    公开(公告)日:2022-09-13

    申请号:US16843804

    申请日:2020-04-08

    Abstract: Methods, systems, and devices for wireless communications are described. One or more UEs communicating over sidelink may indicate transmit and receive categories to other UEs. A first UE may receive, in a sidelink communication message, an indication of a receive category of a second wireless device. The first UE may then transmit a shared sidelink channel message to the second wireless device based on the receive category of the second wireless device. In another case, a first UE may receive, in a sidelink communication message, an indication of a transmit category of a second wireless device. The first wireless device may then compare the transmit category of the second wireless device with a receive category of the first wireless device. The first wireless device may determine whether to decode a shared sidelink channel message from the second UE based on the comparing.

    Techniques for implementing Reed-Solomon coding

    公开(公告)号:US12224857B2

    公开(公告)日:2025-02-11

    申请号:US17748579

    申请日:2022-05-19

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication to a network entity that the UE is capable of decoding Reed-Solomon codes and that the UE is capable of performing near maximal likelihood demodulation. The network entity may transmit a message indicating that a Reed-Solomon code is applied to one or more scheduled signals based at least in part on the indication. The network entity may apply Reed-Solomon coding to a signal of the one or more scheduled signals based at least in part on the message. The UE may apply near maximal likelihood demodulation and Reed-Solomon decoding to a received signal of the one or more scheduled signals based at least in part on the message.

    RATELESS POLAR CODES
    10.
    发明公开

    公开(公告)号:US20240313887A1

    公开(公告)日:2024-09-19

    申请号:US18183835

    申请日:2023-03-14

    CPC classification number: H04L1/0057

    Abstract: Methods, systems, and devices for wireless communication are described. A first wireless device may transmit, to a second wireless device, a codeword corresponding to a set of information bits encoded using a polar code, and the second wireless device may obtain a first set of log likelihood ratios (LLRs) based on performing a first decoding operation on the codeword. In cases that the first wireless device identifies a failure of the second wireless device to decode one or more of the information bits, the first wireless device may retransmit a subset of the information bits to the second wireless device independently of the polar code. The second wireless device may then attempt to decode the codeword a second time using the polar code and based on a combination of a first set of LLRs and a second set of LLRs corresponding to the subset of the information bits.

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