-
公开(公告)号：US20230209317A1
公开(公告)日：2023-06-29
申请号：US18000346
申请日：2020-07-14
Applicant: QUALCOMM Incorporated
Inventor： Kangqi LIU , Changlong XU , Jian LI , Liangming WU , Hao XU
CPC classification number: H04W4/40 , H04L5/0053
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to another UE, a set of encoded packets associated with a vehicle-to-everything (V2X) communication, wherein the set of encoded packets are generated according to a network coding scheme, transmit, to a relay device, the set of encoded packets associated with the V2X communication, and receive, from the relay device, an acknowledgment message based at least in part on transmitting, to the relay device, the set of encoded packets associated with the V2X communication. Numerous other aspects are provided.
-
公开(公告)号：US20230072054A1
公开(公告)日：2023-03-09
申请号：US17759620
申请日：2020-03-13
Applicant: QUALCOMM Incorporated
Inventor： Kangqi LIU , Changlong XU , Jian LI , Liangming WU , Hao XU
Abstract: Methods, systems, and devices for wireless communications are described. An encoding device may encode a set of source symbols using one or more raptor codes to generate a first set of encoded symbols and may transmit the first set of encoded symbols to a decoding device. The decoding device may successfully recover a source symbol of the set of source symbols from the first set of encoded symbols and may transmit an indication of the source symbol to the encoding device. The encoding device may encode one or more source symbols of the set of source symbols using the one or more raptor codes to generate a second set of encoded symbols based on receiving the indication of the source symbol and may transmit the second set of encoded symbols to the decoding device.
-
公开(公告)号：US20220200634A1
公开(公告)日：2022-06-23
申请号：US17567587
申请日：2022-01-03
Applicant: QUALCOMM Incorporated
Inventor： Changlong XU , Jian LI , Chao WEI , Jilei HOU
Abstract: Various aspects of the disclosure relate to rate matching techniques for block encoding. In some aspects, a decision regarding whether to use repetition-based rate matching or puncture-based rate matching is made based on a block size of information being encoded. In some aspects, repetition-based rate matching uses a bit-reversal permutation technique.
-
公开(公告)号：US20210234639A1
公开(公告)日：2021-07-29
申请号：US17054917
申请日：2019-05-28
Applicant: Kai CHEN , Jian LI , Changlong XU , Liangming WU , Hao XU , Qualcomm incorporated
Inventor： Kai CHEN , Jian LI , Changlong XU , Liangming WU , Hao XU
Abstract: A device may identify that an incremental redundancy hybrid automatic repeat request (IR-HARQ) scheme is used in association with sequential transmissions of an information bit vector to or from another wireless device, where each transmission in the scheme is associated with a resource size. The device may identify a mother code length for a polar code based at least in part on an aggregate resource size associated with the sequential transmissions. The device may identify an adjusted bit index set for the polar code based at least in part on the IR-HARQ scheme. The device may transmit (or receive), for each transmission of the information bit vector, a respective subset of encoded bits generated by mapping the information bit vector to a set of polarized bit channels of the polar code in accordance with the bit index set.
-
45.发明申请公开(公告)号：US20210105089A1
公开(公告)日：2021-04-08
申请号：US15733499
申请日：2019-01-17
Applicant: Kai CHEN , Liangming WU , Changlong XU , Jian UI , Hao XU , QUALCOMM Incorporated
Inventor： Kai CHEN , Liangming WU , Changlong XU , Jian LI , Hao XU
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first polar code encoding process on a first transmission of a hybrid automatic repeat request (HARQ) process; generate a second transmission of the HARQ process by relocating a portion of bits in less reliable positions of the first transmission to more reliable positions of the second transmission of the HARQ process, wherein the less reliable positions and the more reliable positions are evaluated based at least in part on a channel transform, wherein the channel transform is based at least in part on the first transmission, the second transmission, the first polar encoding process and a second polar encoding process associated with the second transmission; and transmit the second transmission of the HARQ process. Numerous other aspects are provided.
-
Patent Agency Ranking
公开(公告)号：US20190123860A1
公开(公告)日：2019-04-25
申请号：US16091081
申请日：2017-03-03
Applicant: QUALCOMM Incorporated
Inventor： Changlong XU , Jian LI , Chao WEI , Neng WANG , Jilei HOU
Abstract: The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.
-
公开(公告)号：US20180034593A1
公开(公告)日：2018-02-01
申请号：US15643003
申请日：2017-07-06
Applicant: QUALCOMM Incorporated
Inventor： Changlong XU , Jian LI , Chao WEI , Jilei HOU
CPC classification number: H04L1/08 , H04L1/0011 , H04L1/0058 , H04L1/0061 , H04L1/0079 , H04L1/1671 , H04L1/1812 , H04L1/1896 , H04L1/203
Abstract: 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.
-
公开(公告)号：US20150312056A1
公开(公告)日：2015-10-29
申请号：US14646360
申请日：2013-01-08
Applicant: Haitao ZHANG , Yin HUANG , Jian LI , Yisheng XUE , QUALCOMM INCORPORATED
Inventor： Haitao ZHANG , Yin HUANG , Jian LI , Yisheng XUE
CPC classification number: H04L25/0212 , H04B10/60 , H04L1/0054 , H04L25/03057
Abstract: A receiver is disclosed that includes a slicer having an input to receive a sequence of symbols exhibiting inter-symbol-interference (ISI). The slicer determines a state associated with each symbol based on a threshold. A feedback equalization unit is coupled to the slicer to apply equalization to the symbol fed to the slicer input based on prior detected symbol states. A Least-Mean-Square (LMS) unit cooperates with the slicer and feedback equalization unit to estimate a channel impulse response based on the equalized symbols. The LMS unit feeds the estimated channel impulse response to a Maximum-Likelihood-Sequence-Estimation (MLSE) unit to generate an estimated sequence of bits based on the estimated channel impulse response.
Abstract translation: 公开了一种接收器，其包括具有用于接收呈现符号间干扰（ISI）的符号序列的输入的限幅器。 限幅器基于阈值确定与每个符号相关联的状态。 反馈均衡单元耦合到限幅器，以基于先前检测的符号状态对馈送到限幅器输入的符号施加均衡。 最小均方（LMS）单元与限幅器和反馈均衡单元协作以基于均衡符号来估计信道脉冲响应。 LMS单元将估计的信道脉冲响应馈送到最大似然序列估计（MLSE）单元，以基于所估计的信道脉冲响应来产生估计的比特序列。
-
公开(公告)号：US20250038881A1
公开(公告)日：2025-01-30
申请号：US18715918
申请日：2022-02-25
Applicant: QUALCOMM Incorporated
Inventor： Jian LI , Changlong XU , Kangqi LIU , Liangming WU , Kexin XIAO , Wei LIU , Ruiming ZHENG , Hao XU
Abstract: Methods, systems, and devices for wireless communications are described. A receiving device may receive an encoded signal including a set of information blocks. Each information block may include a set of encoded information bits and a set of cyclic redundancy check (CRC) bits. The receiving device may perform a staircase decoding procedure to decode the set of encoded information bits of a selected information block that is part of a subset of the set of information blocks that is within a sliding window. The staircase decoding procedure may include one or more iterations of a decoding process applied to the subset of the set of information blocks. The receiving device may perform, inbetween iterations of the staircase decoding procedure applied to the subset of the set of information blocks within the sliding window, a CRC procedure based on the set of CRC bits in the set of information blocks.
-
公开(公告)号：US20240187458A1
公开(公告)日：2024-06-06
申请号：US18553726
申请日：2021-06-07
Applicant: QUALCOMM Incorporated
Inventor： Shuhong WANG , Bing LENG , Jing ZHOU , Jian LI , Xuefeng CHEN , Yan WANG , Hao ZHANG
IPC: H04L65/1016 , H04L65/1069 , H04W76/18
CPC classification number: H04L65/1016 , H04L65/1069 , H04W76/18
Abstract: A method and apparatus improve Voice over Internet Protocol (VOIP) call setup success rate and latency. The method provides for attempting a mobile originated packet switched call, by a user equipment (UE), across a packet switched network with a transmission control protocol (TCP) connection of the Internet Protocol multimedia subsystem (IMS) session. A silent redial of the mobile originated packet switched call is performed in response to a failure of the mobile originated packet switched call, via a circuit switched network. A keep alive message is transmitted over the packet switched network after the circuit switched network call, which allows reconnection to the packet switched network.
-
-
-
-
-
-
-
-
-
Search Results
60
records
(took 0.023 seconds)
