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公开(公告)号：US12088385B2
公开(公告)日：2024-09-10
申请号：US17311773
申请日：2019-12-19
发明人： Qiaoyu Li , Liangming Wu , Chenxi Hao , Joseph Binamira Soriaga , Hao Xu
IPC分类号： H04B7/06 , H04B7/0456
CPC分类号： H04B7/0658 , H04B7/0456 , H04B7/0478 , H04B7/0626 , H04B7/0634 , H04B7/0695
摘要： Configurations and feedback schemes for compressed channel state information (CSI) feedback are provided. A User Equipment (UE) determines a constraint on a total number of transfer domain coefficients to be reported for compressed Channel State Information (CSI) feedback by the UE for a plurality of beams identified for the feedback, wherein each transfer domain coefficient is associated with amplitude information and phase information. The UE selects from a transfer domain coefficient compression matrix, based on the constraint, a set of one or more transfer domain coefficients to report for each of the beams. The UE reports information indicating a number of selected transfer domain coefficients in the set of transfer domain coefficients for each beam and a location of each transfer domain coefficient within the transfer domain coefficient compression matrix and reports at least the amplitude and phase information for the selected coefficients.
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公开(公告)号：US12074706B2
公开(公告)日：2024-08-27
申请号：US17310189
申请日：2019-01-23
发明人： Kai Chen , Changlong Xu , Liangming Wu , Jian Li , Jing Jiang , Hao Xu
IPC分类号： H04L1/08
CPC分类号： H04L1/08
摘要： Wireless communications systems and methods related to hybrid repeat request (HARQ) with rate splitting are provided. A first wireless communication device communicates, with a second wireless communication device, a first communication signal including a plurality of information bits. The first wireless communication device determines a number of bits in the plurality of information bits to be repeated in a second communication signal based on channel capacity information. The first wireless communication device communicates, with the second wireless communication device, the second communication signal including the plurality of information bits and a repetition of a subset of the plurality of information bits, where the subset of the plurality of information bits includes the determined number of bits.
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公开(公告)号：US11962528B2
公开(公告)日：2024-04-16
申请号：US17274407
申请日：2019-08-23
发明人： Chenxi Hao , Yu Zhang , Liangming Wu , Qiaoyu Li , Wanshi Chen , Peter Gaal
CPC分类号： H04L5/0048 , H04B7/0626 , H04B7/0634 , H04L5/0057
摘要： Certain aspects of the present disclosure provide techniques for channel state information (CSI) for multiple transmission reception point (multi-TRP) transmission such as non-coherent joint transmission (NCJT), including determining subband sizes for CSI and rules for Part II CSI omission. A method that can be performed by a user equipment (UE) includes receiving a CSI report configuration. The CSI report configuration associated with one or more CSI reference signal (RS) resources, each CSI resource including a set of ports or port groups. The UE selects one or more CSI-RS resources for which to report CSI and determines a subband size for sending a CSI report based, at least in part, on payload of the CSI report. In an example method, the UE can determine whether the UE has sufficient resources for the CSI report and omit at least a portion of the CSI based on the determination.
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公开(公告)号：US11791936B2
公开(公告)日：2023-10-17
申请号：US17866168
申请日：2022-07-15
发明人： Kai Chen , Changlong Xu , Liangming Wu , Jian Li , Hao Xu
IPC分类号： H04L1/00 , H03M13/13 , H03M13/00 , H04L1/1812 , H04L1/1829
CPC分类号： H04L1/0068 , H03M13/13 , H03M13/6306 , H03M13/6362 , H04L1/1819 , H04L1/1854
摘要： Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.
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公开(公告)号：US11777645B2
公开(公告)日：2023-10-03
申请号：US16967106
申请日：2019-02-07
发明人： Changlong Xu , Liangming Wu , Kai Chen , Jian Li , Hao Xu , Tingfang Ji , Joseph Binamira Soriaga , Jing Jiang
IPC分类号： H04L1/00 , H04L1/08 , H04L1/1812
CPC分类号： H04L1/0057 , H04L1/0026 , H04L1/0041 , H04L1/0072 , H04L1/08 , H04L1/1812
摘要： Techniques are provided for retransmission of Physical Uplink Shared Channel (PUCCH) for Ultra Reliable Low Latency Communications (URLLC). A User Equipment (UE) transmits at least one code block of a control channel, the at least one code block including Channel State Information (CSI), wherein each code block is polar encoded by assigning bit indices of the code block to bit channels in a particular order of reliabilities of the bit channels. The UE detects a trigger, and in response, retransmits at least a portion of each code block including retransmitted CSI, wherein the portion is polar encoded by assigning bit indices of the retransmitted CSI to the bit channels in the reverse order of reliabilities of the bit channels as compared to the polar encoding of the CSI.
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公开(公告)号：US20230261722A1
公开(公告)日：2023-08-17
申请号：US18003099
申请日：2020-08-19
发明人： Wei Xi , Yu Zhang , Hao Xu , Min Huang , Chao Wei , Changlong Xu , Liangming Wu , Chenxi Hao , Qiaoyu Li , Kangqi Liu , Jing Dai , Rui Hu , Jian Li
CPC分类号： H04B7/06956 , H04B7/086 , H01Q3/26
摘要： Methods, systems, and devices for wireless communications are described. In some systems, a device may select antenna elements from a planar array to transmit or receive an orbital angular momentum (OAM) beam. The device may determine a first area (e.g., a first ring area) based on an angular direction over which the device can communicate an OAM beam with a second device and may determine a second area (e.g., a second ring area) on the planar array based on projecting the first area on the planar array. The device may select a set of antenna elements from the planar array that are located within the second area. The device may determine a complex-valued weight for each antenna element of the selected set of antenna elements and may transmit or receive an OAM beam to or from the second device via the set of antenna elements according to the angular direction.
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公开(公告)号：US11729783B2
公开(公告)日：2023-08-15
申请号：US16772736
申请日：2017-12-13
发明人： Changlong Xu , Liangming Wu , Kai Chen , Hao Xu , Jing Jiang , Jing Sun , Joseph Binamira Soriaga
CPC分类号： H04W72/23 , H04L1/08 , H04L5/0053
摘要： Methods, systems, and devices for wireless communications are described. A wireless device such as a user equipment (UE) may monitor a search space of a control channel for at least one downlink transmission. The UE may perform a plurality of decoding operations on a plurality of decoding candidates associated with the downlink control information format transmitted in a plurality of transmission time intervals (TTIs). In some cases, the plurality of decoding operations may comprise performing a first decoding on a first decoding candidate received in a current TTI, the first decoding operation applying a first descrambling code to the first decoding candidate, and performing a second decoding operation on a combined decoding candidate that comprises soft combined information from the first and second decoding candidate, the second decoding candidate received in a prior TTI.
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公开(公告)号：US20230171032A1
公开(公告)日：2023-06-01
申请号：US17995394
申请日：2020-04-03
发明人： Kangqi Liu , Changlong Xu , Jian Li , Liangming Wu , Yu Zhang , Hao Xu
CPC分类号： H04L1/08 , H04L5/0053
摘要： Network coding in automatic receipt request (ARQ) functionality is disclosed. A compatible transmitter configures a new transmission period, in which the set of data for transmission is transmitted, and a retransmission period, after the new transmission period, in which a number of network coded data is retransmitted based on the acknowledgement feedback received from the receivers receiving the transmitted set of data. The acknowledgement feedback identifies one or more data requested for retransmission by one or more of the receivers. The transmitter determines a number of network coded data that could be transmitted to accommodate each of the requesting receivers and the data requested by such receivers for retransmission. These network coded data would then be retransmitted by the transmitter during the retransmission period.
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9.发明申请公开(公告)号：US20230131745A1
公开(公告)日：2023-04-27
申请号：US18057617
申请日：2022-11-21
发明人： Min Huang , Chao Wei , Chenxi Hao , Liangming Wu , Qiaoyu Li
IPC分类号： H04B7/0456 , H04B7/06
摘要： Methods, systems, and devices for wireless communications are described that provide for channel state information (CSI) feedback for multiple discrete Fourier transform (DFT) beams on multiple transmission layers. A user equipment (UE) may report a total number of non-zero power DFT beams across all of the transmission layers. The UE may be configured with a total number of leading beams (Ktotal) across all of the transmission layers for which to provide high quantization feedback. When the total number of non-zero DFT beams across all the transmission layers exceeds the configured total number of leading beams across all the transmission layers, the UE may report high-resolution quantization feedback for Ktotal non-zero power precoding coefficients having the highest amplitude coefficients, and may report low-resolution quantization feedback for the remaining non-zero power precoding coefficients. A base station may receive the CSI feedback to determine a precoding matrix.
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公开(公告)号：US11632160B2
公开(公告)日：2023-04-18
申请号：US16982983
申请日：2019-04-03
发明人： Liangming Wu , Yu Zhang , Chenxi Hao , Qiaoyu Li , Hao Xu , Wanshi Chen
IPC分类号： H04B7/06 , H04B7/0456 , H04W28/06
摘要： Certain aspects of the present disclosure provide techniques for reducing overhead for channel state information (CSI). Certain aspects provide a method for wireless communication. The method generally includes receiving a channel state information reference signal (CSI-RS), determining one or more feedback components associated with a CSI feedback type based on the CSI-RS, identifying that a payload of the one or more feedback components is to be compressed, compressing the payload, and reporting the compressed payload.
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