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公开(公告)号：US20230064684A1
公开(公告)日：2023-03-02
申请号：US17759475
申请日：2020-03-05
发明人： Changlong XU , Xiaoxia ZHANG , Jing SUN
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may attempt, for up to a threshold quantity of transmission opportunities of a plurality of transmission opportunities of a channel occupancy time in a transmission opportunity aggregation deployment, a listen-before-talk (LBT) procedure; and selectively transmit, based at least in part on the LBT procedure being successful within the threshold quantity of transmission opportunities, one or more repetitions of an uplink transmission in one or more remaining transmission opportunities of the plurality of transmission opportunities, or determine, based at least in part on the LBT procedure not being successful within the threshold quantity of transmission opportunities, that a failure of the uplink transmission has occurred. Numerous other aspects are provided.
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公开(公告)号：US20220376710A1
公开(公告)日：2022-11-24
申请号：US17761262
申请日：2019-09-20
发明人： Changlong XU , Tao LUO , Hao XU
摘要： Methods, systems, and devices for wireless communications are described. An encoding device (e.g., a user equipment (UE) or a base station) may divide one or more data units (e.g., packet data convergence protocol (PDCP) protocol data units (PDU)) into a set of data blocks. The encoding device may encode the set of data blocks using a fountain code and may generate a set of data units (e.g., radio link control (RLC) PDUs) based on encoding the set of data blocks using the fountain code. The UE may allocate a first subset of the set of data units to a first carrier and a second subset of the set of data units to a second carrier and may transmit the first subset over the first carrier and the second subset over the second carrier.
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公开(公告)号：US20220312471A1
公开(公告)日：2022-09-29
申请号：US17635324
申请日：2019-08-26
发明人： Min HUANG , Wanshi CHEN , Chao WEI , Qiaoyu LI , Yu ZHANG , Yuwei REN , Liangming WU , Chenxi HAO , Changlong XU , HAO XU
摘要： Methods, systems, and devices for wireless communications are described in which a base station operating in full-duplex mode may provide for reception of one or more higher priority transmissions using at least partially overlapping time-frequency resources as used for transmission of lower priority communications. In order to mitigate self-interference at the base station, a transmission power used for the overlapping time-frequency resources may be reduced. The base station may provide an indication of a subset of resources that have a reduced transmission power, an amount of the power reduction for the subset of resources, or both.
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74.发明申请公开(公告)号：US20220132522A1
公开(公告)日：2022-04-28
申请号：US17427854
申请日：2019-02-08
发明人： Chao WEI , Changlong XU , Hao XU
IPC分类号： H04W72/12
摘要： Methods, systems, and devices for wireless communication are described. A wireless device may obtain group control information in a group common physical downlink shared channel (PDSCH), determine resources for communicating on a shared channel based on the group control information, and communicate on the resources of the shared channel. A base station may configure a user equipment (UE) group comprising at least one UE, transmit, in a group common physical downlink shared channel (PDSCH), group control information for scheduling the at least one UE for communicating on a shared channel, and communicate on the shared channel with the at least one UE.
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公开(公告)号：US20210281359A1
公开(公告)日：2021-09-09
申请号：US16318093
申请日：2016-07-27
发明人： Changlong XU , Jian LI , Chao WEI , Jilei HOU
摘要： Certain aspects of the present disclosure relate to techniques and apparatus for design of hybrid automatic repeat request (HARQ) feedback bits. The method generally includes obtaining a payload to be transmitted, partitioning the payload into a plurality of blocks, and partitioning each block of the plurality of blocks into a plurality of sections. The method also includes deriving redundancy check information for each section of the plurality of sections, and generating a plurality of codewords, each comprising a block of the plurality of blocks and the redundancy check information for each section of the block, wherein a location of each of the sections in the codewords is determined based on an error rate corresponding to each of the sections.
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公开(公告)号：US20210203450A1
公开(公告)日：2021-07-01
申请号：US16078341
申请日：2016-11-04
发明人： Changlong XU , Jian LI , Jilei HOU , Neng WANG , Chao WEI
摘要： For communication utilizing polar codes, a hybrid automatic repeat request (HARQ) algorithm is provided that takes advantage of the benefits of chase combining HARQ (HARQ-CC) and incremental redundancy HARQ (HARQ-IR), by selecting one or the other in accordance with a code rate of the first transmission. In some examples, the HARQ algorithm utilizes HARQ-IR when the code rate in the first transmission is greater than a code rate threshold, and utilizes HARQ-CC when the code rate in the first transmission is less than the code rate threshold.
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公开(公告)号：US20210119735A1
公开(公告)日：2021-04-22
申请号：US16604060
申请日：2018-04-06
发明人： Changlong XU , Chao WEI , Jing JIANG , Jilei HOU , Yang YANG , Gabi SARKIS
摘要： Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching a stream of bits encoded using polar codes. An exemplary method generally includes determining a mother code size (N) for transmitting an encoded stream of bits based, at least in part, on a minimum supported code rate for transmitting the encoded stream of bits (Rmin), a control information size of the encoded stream of bits (K), a number of coded bits for transmission (E), and a maximum mother code size (Nmax), encoding a stream of bits using a polar code of size (N, K) and storing the encoded stream of bits in a circular buffer, and performing rate-matching on the stored encoded stream of bits based, at least in part, on a comparison among the mother code size (N), the control information size of the encoded stream of bits (K), and the number of coded bits for transmission (E).
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公开(公告)号：US20210105087A1
公开(公告)日：2021-04-08
申请号：US16464576
申请日：2017-06-02
发明人： Changlong XU , Jian LI , Jilei HOU
摘要： Methods and apparatuses for wireless communications are described. In an aspect, a method and apparatus may include determining that a second transmission is decoded incorrectly in response to a first received indication on a communication channel. The method and apparatus may further include transmitting, on the communication channel, a third transmission and a fourth transmission based on a determination that the second transmission is decoded incorrectly, wherein the third transmission corresponds to a coded bit set of the third transmission including a first group of information bits of a coded bit set of a first transmission and a second group of information bits of a coded bit set of the second transmission and the fourth transmission corresponds to a coded bit set of the fourth transmission including a combination of the coded bit sets of the first transmission, the second transmission, and the third transmission.
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公开(公告)号：US20210099982A1
公开(公告)日：2021-04-01
申请号：US17044709
申请日：2019-04-02
发明人： Changlong XU , Chao WEI , Liangming WU , Peng CHENG , Kai CHEN , Hao XU , Tingfang JI
摘要： Aspects of the disclosure relate to wireless communication. In some aspects, a user equipment (UE) may receive an indicator, in a physical downlink control channel (PDCCH) payload, that indicates whether the PDCCH payload includes data or downlink control information (DCI) for obtaining the data, wherein the indicator is an initial state of a cyclic redundancy check that includes a predefined sequence of bits; and obtain at least one of the data or the DCI based at least in part on the indicator. Numerous other aspects are provided.
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公开(公告)号：US20200343909A1
公开(公告)日：2020-10-29
申请号：US16760758
申请日：2018-09-21
发明人： Kai CHEN , Liangming WU , Changlong XU , Jing JIANG , Hao XU
摘要： Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. The CRC concatenated polar encoding techniques may avoid transmission of dummy bits. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to avoid generating a dummy bit. In another method, only odd-weighted generator polynomials are selected to avoid generating the dummy bit.
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