-
公开(公告)号：US20160049962A1
公开(公告)日：2016-02-18
申请号：US14779708
申请日：2013-04-25
申请人： LI, Jian , XUE, Yisheng , HUANG, Yin , XU, Changlong , HOU, Jilei , QUALCOMM INCORPORATED
发明人： Jian Li , Ylsheng Xue , Yin Huang , Changlong Xu , Jilei Hou
CPC分类号： H03M13/1174 , H03M13/1102 , H03M13/611 , H03M13/616
摘要： A method of data encoding is disclosed. A communications device receives a set of information bits to be encoded into a codeword (c), which includes the set of information bits and a set of parity bits. A first bit value is assigned to a first parity bit in the set of parity bits. The remaining parity bits are then encoded based, at least in part, on the first bit value assigned to the first parity bit. The device may encode the remaining parity bits using the set of information bits and a parity check matrix (H) for a low density parity check (LDPC) code. The device may also generate a new parity check matrix (H0) based on linearly independent rows of the parity check matrix H, and iteratively evaluate each of the remaining parity bits based on the equation: H0c=0. The device may then determine whether the encoded codeword c is a valid codeword given the LDPC code, and change one or more bit values of the codeword if c is not a valid codeword.
摘要翻译： 公开了一种数据编码方法。 通信设备接收要编码的一组信息比特的码字（c），其包括该组信息比特和一组奇偶校验位。 第一比特值被分配给奇偶校验位集合中的第一奇偶校验位。 然后，至少部分地基于分配给第一奇偶校验位的第一比特值来编码剩余的奇偶校验位。 该装置可以使用一组信息比特和用于低密度奇偶校验（LDPC）码的奇偶校验矩阵（H））来编码剩余的奇偶校验比特。 该装置还可以基于奇偶校验矩阵H的线性独立行生成新的奇偶校验矩阵（H0），并且基于以下等式迭代地评估剩余奇偶校验位中的每一个：H0c = 0。 然后，设备可以确定编码码字c是否是给定LDPC码的有效码字，并且如果c不是有效码字，则改变码字的一个或多个比特值。
-
公开(公告)号：US12069699B2
公开(公告)日：2024-08-20
申请号：US18067500
申请日：2022-12-16
发明人： Liangming Wu , Kangqi Liu , Changlong Xu , Jian Li , Hao Xu
IPC分类号： H04L1/02 , H04B7/0413 , H04L1/16 , H04W72/23 , H04W72/30
CPC分类号： H04W72/30 , H04B7/0413 , H04L1/16 , H04W72/23
摘要： Methods, systems, and devices for wireless communications are described. A base station may transmit an encoded transmission via a broadcast to multiple user equipment (UE). Subsequently, the multiple UEs may transmit assistance information to the base station based on attempting to decode the broadcasted encoded transmission. If the decoding is unsuccessful for at least one UE, the base station may then transmit an additional encoded transmission via a unicast or multicast message to the UEs that were unsuccessful. Additionally, the base station may transmit configuration information for the multiple UEs to receive the encoded transmissions and to transmit the assistance information. For example, the configuration information may include portion information for how long the encoded transmission is transmitted via the broadcast, via the unicast, when to transmit the assistance information, etc. In some cases, the configuration information may be based on UE metrics of the multiple UEs.
-
公开(公告)号：US12063653B2
公开(公告)日：2024-08-13
申请号：US17596360
申请日：2019-07-01
发明人： Yuwei Ren , Chao Wei , Min Huang , Yu Zhang , Huilin Xu , Qiaoyu Li , Chenxi Hao , Liangming Wu , Hao Xu , Changlong Xu , Wanshi Chen
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information for an uplink control channel, wherein the configuration information includes at least one of: a first resource identifier associated with a non-full-duplex (non-FD) zone, or a second resource identifier associated with a full-duplex (FD) zone. The UE may transmit uplink control information (UCI) on the uplink control channel in at least one of the non-FD zone or the FD zone in accordance with the configuration information. Numerous other aspects are provided.
-
公开(公告)号：US12034534B2
公开(公告)日：2024-07-09
申请号：US18187255
申请日：2023-03-21
发明人： Changlong Xu , Jian Li , Chao Wei , Jing Jiang , Jilei Hou
CPC分类号： H04L1/0058 , G06F9/30029 , H03M13/098 , H03M13/13 , H04B7/2668 , H04L1/0046 , H04L1/0052 , H04L1/0061 , H04L1/0063 , H04W40/02
摘要： Methods, systems, and devices for wireless communication are described for dynamic frozen bits of polar codes for early termination and performance improvement. A wireless device may receive a signal comprising a codeword encoded using a polar code. The wireless device may perform decoding of the codeword including at least: parity check of a first subset of decoding paths for making a decision on early termination of decoding of the codeword based on dynamic frozen bits, and generating path metrics for a second subset of the decoding paths that each pass the parity check based on the dynamic frozen bits, and performing error detection on a bit sequence corresponding to one of the second subset of the decoding paths based at part on error detection bits and the generated path metrics. The wireless device may process the information bits based on a result of the decoding.
-
公开(公告)号：US11949434B2
公开(公告)日：2024-04-02
申请号：US17761262
申请日：2019-09-20
发明人： Changlong Xu , Tao Luo , Hao Xu
CPC分类号： H03M13/3761 , H04L1/0041 , H04L1/0045
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.
-
公开(公告)号：US20230262735A1
公开(公告)日：2023-08-17
申请号：US18067500
申请日：2022-12-16
发明人： Liangming Wu , Kangqi Liu , Changlong Xu , Jian Li , Hao Xu
IPC分类号： H04W72/30 , H04W72/23 , H04B7/0413 , H04L1/16
CPC分类号： H04W72/30 , H04W72/23 , H04B7/0413 , H04L1/16
摘要： Methods, systems, and devices for wireless communications are described. A base station may transmit an encoded transmission via a broadcast to multiple user equipment (UE). Subsequently, the multiple UEs may transmit assistance information to the base station based on attempting to decode the broadcasted encoded transmission. If the decoding is unsuccessful for at least one UE, the base station may then transmit an additional encoded transmission via a unicast or multicast message to the UEs that were unsuccessful. Additionally, the base station may transmit configuration information for the multiple UEs to receive the encoded transmissions and to transmit the assistance information. For example, the configuration information may include portion information for how long the encoded transmission is transmitted via the broadcast, via the unicast, when to transmit the assistance information, etc. In some cases, the configuration information may be based on UE metrics of the multiple UEs.
-
7.发明公开公开(公告)号：US20230261729A1
公开(公告)日：2023-08-17
申请号：US18003576
申请日：2020-08-21
发明人： Min Huang , Chao Wei , Qiaoyu Li , Jing Dai , Wei Xi , Chenxi Hao , Kangqi Liu , Hao Xu , Changlong Xu , Wanshi Chen
CPC分类号： H04B7/0888 , H04B7/0626 , H04B7/0857
摘要： Aspects of the disclosure relate to transmitting, from a user equipment (UE) to a base station, information indicative of a multicast session that the UE is interested in accessing; transmitting information indicating that a first beam of a plurality of beams is a preferred beam for receiving multicast data associated with the multicast session; receiving, from the base station, a list of at least one beam of the plurality of beams associated with the multicast session; and receiving, from the base station using a beam from the list, multicast data associated with the multicast session. Other aspects, embodiments, and features are also claimed and described.
-
公开(公告)号：US11677506B2
公开(公告)日：2023-06-13
申请号：US16765557
申请日：2017-11-20
申请人： Changlong Xu , Hao Xu , Jing Jiang , Qualcomm Incorporated
发明人： Changlong Xu , Hao Xu , Jing Jiang
IPC分类号： H04L1/1812 , H04L1/1825 , H04L1/1867 , H04L1/1829 , H04L1/1803 , H04W76/27 , H04L1/20 , H04W72/54
CPC分类号： H04L1/1812 , H04L1/1803 , H04L1/188 , H04L1/1825 , H04L1/1848 , H04L1/1896 , H04L1/1887 , H04L1/203 , H04W72/54 , H04W76/27
摘要： Methods, systems, and devices for wireless communications are described. Some wireless communications systems may support hybrid automatic repeat request (HARQ) schemes to improve the likelihood that information is received correctly over a wireless communications link. In HARQ, when a transmitting device determines that a receiving device failed to successfully decode a transmission of information, the transmitting device may retransmit the information to the receiving device. In some cases, HARQ techniques may be used for communications associated with different types of services. In such cases, to keep the latency of communications within a latency budget for a particular type of service, wireless devices may utilize the techniques described herein to dynamically terminate HARQ retransmissions. For instance, a transmitting device may avoid retransmitting information when an amount of time that has elapsed since an original transmission of the information has exceeded the latency budget.
-
公开(公告)号：US20220069841A1
公开(公告)日：2022-03-03
申请号：US17522693
申请日：2021-11-09
摘要： Various aspects of the disclosure relate to encoding information and decoding information. In some aspects, the disclosure relates to an encoder and a decoder for Polar codes with HARQ. If a first transmission of the encoder fails, information bits associated with a lower quality channel may be retransmitted. At the decoder, the resulting decoded retransmitted bits may be used to decode the first transmission by substituting the retransmitted bits for the original corresponding (low quality channel) bits. In some aspects, to decode the first transmission, soft-combining is applied to the decoded retransmitted bits and the original corresponding (low quality channel) bits. In some aspects, CRC bits for a first transmission may be split between a first subset of bits and a second subset of bits. In this case, the second subset of bits and the associated CRC bits may be used for a second transmission (e.g., a retransmission).
-
公开(公告)号：US11211946B2
公开(公告)日：2021-12-28
申请号：US16336213
申请日：2017-07-11
摘要： Various aspects of the disclosure relate to encoding information and decoding information. In some aspects, the disclosure relates to an encoder and a decoder for Polar codes with HARQ. If a first transmission of the encoder fails, information bits associated with a lower quality channel may be retransmitted. At the decoder, the resulting decoded retransmitted bits may be used to decode the first transmission by substituting the retransmitted bits for the original corresponding (low quality channel) bits. In some aspects, to decode the first transmission, soft-combining is applied to the decoded retransmitted bits and the original corresponding (low quality channel) bits. In some aspects, CRC bits for a first transmission may be split between a first subset of bits and a second subset of bits. In this case, the second subset of bits and the associated CRC bits may be used for a second transmission (e.g., a retransmission).
-
-
-
-
-
-
-
-
-
搜索结果
120 条记录 (耗时 0.052 秒)
