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公开(公告)号：US11310011B2
公开(公告)日：2022-04-19
申请号：US16623009
申请日：2018-06-13
Applicant: Qualcomm Incorporated
Inventor： Chenxi Hao , Yu Zhang , Wanshi Chen , Chao Wei , Liangming Wu
IPC: H04W4/00 , H04L5/00 , H04B7/0456 , H04B7/06 , H04W24/10
Abstract: Methods, systems, devices, and apparatus for wireless communication are described that relate to transmission of a set of precoded reference signals, and using a physical resource group (PRG) size for the resources carrying the set of reference signals for channel estimation at a user equipment (UE). For example, a base station may apply a precoding matrix to a set of reference signals, and the reference signals may be configured on a set of resources. In such cases, the resources including these reference signals having a same precoding may be included in a PRG, and a size of the PRG may refer to a number of precoded reference signals for which the precoding is the same. Based on the received reference signals and the PRG size the UE may perform channel estimation based on the PRG size and transmit channel state information (CSI) to the base station.
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公开(公告)号：US11245454B2
公开(公告)日：2022-02-08
申请号：US16972425
申请日：2019-06-13
Applicant: QUALCOMM Incorporated
Inventor： Liangming Wu , Yu Zhang , Chenxi Hao , Qiaoyu Li , Hao Xu
Abstract: Certain aspects of the present disclosure provide techniques for reporting explicit channel state information (CSI) with spatial and time domain compression.
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公开(公告)号：US11196444B2
公开(公告)日：2021-12-07
申请号：US16760758
申请日：2018-09-21
Applicant: QUALCOMM Incorporated
Inventor： Kai Chen , Liangming Wu , Changlong Xu , Jing Jiang , Hao Xu
Abstract: 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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公开(公告)号：US11050511B2
公开(公告)日：2021-06-29
申请号：US17048837
申请日：2019-04-17
Applicant: QUALCOMM Incorporated
Inventor： Chenxi Hao , Yu Zhang , Chao Wei , Liangming Wu , Qiaoyu Li , Hao Xu
IPC: H04L1/00 , H04B7/0413
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive or determine information identifying a mapping of one or more codewords with regard to one or more layers, wherein the one or more layers include at least one of: a first set of layers, wherein a fraction of bits associated with each layer, of the first set of layers, is for data associated with the UE, or a second set of layers, wherein all bits associated with each layer, of the second set of layers, are for data associated with the UE; and perform rate matching or decoding based at least in part on the information identifying the mapping. Numerous other aspects are provided.
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公开(公告)号：US20200177253A1
公开(公告)日：2020-06-04
申请号：US16610179
申请日：2018-05-24
Applicant: Liangming WU , Yu ZHANG , Chenexi HAO , Qualcomm Incorporated
Inventor： Liangming Wu , Yu Zhang , Chenxi Hao
Abstract: A user equipment (UE) may be configured with a first set of indexed timing offsets for determining offsets between uplink grants and uplink data transmissions and a second set of indexed timing offsets for determining offsets between an aperiodic channel state information (CSI) trigger and transmission of an aperiodic CSI report. A UE may receive both an uplink grant for an uplink data transmission and an aperiodic CSI report trigger. The UE may determine a timing offset for transmission of both the uplink data transmission and the aperiodic CSI report. The timing offset may be based at least in part on the first set of indexed timing offsets, the second set of indexed timing offsets, or a third set of indexed timing offsets for joint transmission of uplink data and aperiodic CSI. The UE may transmit the uplink data transmission and the aperiodic CSI report according to the timing offset.
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Patent Agency Ranking
公开(公告)号：US20160226641A1
公开(公告)日：2016-08-04
申请号：US15093648
申请日：2016-04-07
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Sharad Deepak Sambhwani , Liangming Wu , Peyman Razaghi
CPC classification number: H04L5/0053 , H04L1/0038 , H04L5/0016 , H04L27/0012 , H04L27/2602 , H04W28/06 , H04W72/042 , H04W72/1273
Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.
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公开(公告)号：US09350511B2
公开(公告)日：2016-05-24
申请号：US14454660
申请日：2014-08-07
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Sharad Deepak Sambhwani , Liangming Wu , Peyman Razaghi
CPC classification number: H04L5/0053 , H04L1/0038 , H04L5/0016 , H04L27/0012 , H04L27/2602 , H04W28/06 , H04W72/042 , H04W72/1273
Abstract: An apparatus and method for communication including determining an assignment for one of a plurality of symbol durations in a format combination; determining if at least one bit from one or more first upper channels is available if the assignment is associated with the one or more first upper channels and occupying the one of the plurality of symbol durations with the at least one bit, or if unavailable, occupying the one of the plurality of symbol durations with at least one bit from one or more second upper channels or another first upper channel, wherein the first upper channels and the second upper channels are different; and disabling transmission of format information; or including enabling a BTFD hypothesis testing mode; receiving one or more symbol durations on a physical channel; and attempting to decode the received symbol duration with a first hypothesis that a DCCH channel is not transmitted.
Abstract translation: 一种用于通信的装置和方法，包括以格式组合确定多个符号持续时间中的一个的分配; 如果所述分配与所述一个或多个第一上级信道相关联并且占据所述至少一个比特的所述多个符号持续时间中的一个或者如果不可用，则确定来自一个或多个第一上级信道的至少一个比特是否可用 所述多个符号持续时间中的一个具有来自一个或多个第二上部信道或另一个第一上部信道的至少一个比特，其中所述第一上部信道和所述第二上部信道是不同的; 并禁用格式信息的传输; 或包括启用BTFD假设检验模式; 在物理信道上接收一个或多个符号持续时间; 并且尝试以不发送DCCH信道的第一假设对所接收的符号持续时间进行解码。
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78.发明申请公开(公告)号：US20250158787A1
公开(公告)日：2025-05-15
申请号：US18838509
申请日：2022-04-22
Applicant: QUALCOMM INCORPORATED
Inventor： Jing Dai , Chao Wei , Chenxi Hao , Liangming Wu , Min Huang , Wei Xi , Hao Xu
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling indicating a channel state information (CSI) reporting configuration for time-domain CSI reporting associated with a set of time intervals and a CSI reference resource, where the CSI reference resource is included within one of the set of time intervals. In other words, the CSI reporting configuration may define an association, alignment, or arrangement between the CSI reference resource and the set of time intervals. The UE may perform measurement of, prediction based on, or both, one or more CSI-RSs in accordance with the CSI reporting configuration. The UE may then transmit a time-domain CSI report indicating time-domain CSI associated with the set of time intervals, where the alignment enables the network to determine which time intervals correspond to the respective time-domain CSI.
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公开(公告)号：US12289269B2
公开(公告)日：2025-04-29
申请号：US17754719
申请日：2020-10-10
Applicant: QUALCOMM Incorporated
Inventor： Chenxi Hao , Liangming Wu , Yu Zhang , Chao Wei , Hao Xu , Wanshi Chen
Abstract: Certain aspects of the present disclosure provide techniques for port selection for channel state feedback with analog feedforward. A method that may be performed by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI. The port selection includes selecting any of the plurality of CSI-RS ports for selecting CSI-RS based on a grouping of the plurality of CSI-RS ports. The UE determines a precoding matrix indicator (PMI) formed by a linear combination of the one or more selected CSI-RS ports. The UE computes at least wideband linear combination coefficients for the selected CSI-RS ports. The UE provides the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report.
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公开(公告)号：US12273193B2
公开(公告)日：2025-04-08
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.
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