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公开(公告)号：US20210328718A1
公开(公告)日：2021-10-21
申请号：US17271746
申请日：2019-10-03
Applicant: Kai CHEN , Changlong XU , Liangming WU , Jian LI , Hao XU , Qualcomm Incorporated
Inventor： Kai CHEN , Changlong XU , Liangming WU , Jian LI , Hao XU
Abstract: 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：US20210306102A1
公开(公告)日：2021-09-30
申请号：US17268867
申请日：2019-08-05
Applicant: Qiaoyu LI , Chao WEI , Yu ZHANG , Chenxi HAO , Liangming WU , Hao XU , QUALCOMM Incorporated
Inventor： Qiaoyu LI , Chao WEI , Yu ZHANG , Chenxi HAO , Liangming WU , Hao XU
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a first decoding result for a plurality of downlink control channels of a diversity enhancement based non-coherent joint transmission communication and a second decoding result for a plurality of data channels corresponding to the plurality of downlink control channels; and selectively provide feedback regarding the first decoding result and feedback regarding the second decoding result, the feedback regarding the first decoding result indicating whether reception of one or more downlink control channels, of the plurality of downlink control channels, is successful, and the feedback regarding the second decoding result indicating whether decoding of a codeword of the plurality of data channels is successful. Numerous other aspects are provided.
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公开(公告)号：US20210250993A1
公开(公告)日：2021-08-12
申请号：US16972674
申请日：2019-06-12
Applicant: Qiaoyu LI , Chao WEI , Kai CHEN , Hao XU , Qualcomm Incorporated
Abstract: Methods, systems, and devices for wireless communications are described in which sequence groups, and sequence hopping patterns may be used to distinguish concurrent non-orthogonal multiple access (NOMA) transmissions. A wireless device, such as a user equipment (UE), may identify, for a message, a first transmission opportunity from a plurality of transmission opportunities associated with grant-free uplink contention-based transmissions (e.g., NOMA transmissions); select a multiple access (MA) signature sequence from a group of MA signature sequences associated with the first transmission opportunity; identify a hopping pattern associated with the MA signature sequence; and transmit one or more redundancy versions of the message in one or more of the plurality of transmission opportunities comprising the first transmission opportunity according to the MA signature sequence and the hopping pattern.
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公开(公告)号：US20210218523A1
公开(公告)日：2021-07-15
申请号：US17056209
申请日：2019-06-20
Applicant: Qualcomm Incorporated
Inventor： Chenxi HAO , Yu ZHANG , Liangming WU , Hao XU , Wanshi CHEN , Peter GAAL , Tao LUO
IPC: H04L5/00
Abstract: Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive, from a base station, a configuration associated with a layer to reference signal port mapping. In some cases, the UE may identify, based at least in part on the configuration, that at least one layer of a set of layers for receiving a downlink transmission from the base station is adapted based on at least one interference layer. In some cases, the adapted layer may be mapped to one or more reference signal ports. The UE may receive the downlink transmission and may decode the downlink transmission based on identifying that the at least one layer is adapted and the layer to reference signal port mapping.
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公开(公告)号：US20210211249A1
公开(公告)日：2021-07-08
申请号：US15733764
申请日：2019-04-17
Applicant: QUALCOMM Incorporated
Inventor： Chenxi HAO , Yu ZHANG , Chao WEI , Liangming WU , Qiaoyu LI , Hao XU
IPC: H04L5/00
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter device may allocate data associated with a user equipment (UE), of two or more UEs, into at least one of a first part, a second part, or a combination thereof; multiplex the first part of the data associated with the UE with a first part of data associated with one or more other UEs, of the two or more UEs, to form multiplexed data; map the multiplexed data to a first set of layers; and map the second part of the data associated with the UE and a second part of the data associated with the one or more other UEs to a second set of layers. Numerous other aspects are provided.
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Patent Agency Ranking
公开(公告)号：US20210152290A1
公开(公告)日：2021-05-20
申请号：US17045371
申请日：2019-04-04
Applicant: Jian LI , Changlong XU , Jing JIANG , Kai CHEN , Liangming WU , Hao XU , Qualcomm Incorporated
Inventor： Jian LI , Changlong XU , Jing JIANG , Kai CHEN , Liangming WU , Hao XU
Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, devices (e.g., base stations, user equipment (UEs), etc.) may utilize polar coding along with hybrid automatic repeat request (HARQ) techniques. In these systems, a device may encode bits for transmission by mapping information and parity check bits to a first set of polarized bit channels of a polar code. If this transmission is not successfully received at a decoding device, the encoding device may generate a HARQ retransmission. The device may copy information bits to a second set of polarized bit channels of a second polar code containing the first polar code and may assign parity check bits to the second set of bit channels for the copied information bits. These additional parity check bits for the repeated information bits may increase transmission reliability and may support improved early termination at the decoding device.
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公开(公告)号：US20210099213A1
公开(公告)日：2021-04-01
申请号：US17041052
申请日：2019-04-02
Applicant: Kai CHEN , Changlong XU , Liangming WU , Hao XU , Qualcomm incorporated
Inventor： Kai Chen , Changlong XU , Liangming WU , Hao XU
IPC: H04B7/06 , H03M13/13 , H04B17/336
Abstract: A device may generate a first set of encoded bits by mapping an information bit vector to a first set of polarized bit channels of a first polar code according to a first bit index set, the first bit index set being based on respective bit channel reliabilities of the first set of polarized bit channels. The device may transmit the first set of encoded bits to another device over a wireless channel The device may receive an indication that a decoding of the first set of encoded bits was unsuccessful. The device may generate a second set of encoded bits by mapping a repetition of at least one bit to at least one bit channel of a second set of polarized bit channels of a second polar code according to a second bit index set. The device may transmit the second set of encoded bits to the other device.
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公开(公告)号：US20210083795A1
公开(公告)日：2021-03-18
申请号：US16772128
申请日：2019-01-10
Applicant: Kai CHEN , Liangming WU , Hao XU , Changlong XU , QUALCOMM Incorporated
Inventor： Kai CHEN , Liangming WU , Changlong XU , Hao XU
IPC: H04L1/00 , H04B7/0413
Abstract: Certain aspects of the present disclosure relate to methods and apparatus for channel-war polar code construction.
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公开(公告)号：US20210028916A1
公开(公告)日：2021-01-28
申请号：US16926193
申请日：2020-07-10
Applicant: QUALCOMM Incorporated
Abstract: Certain aspects of the present disclosure provide techniques for full-duplex slot configuration. A method that may be performed by a wireless node includes determining one or more traffic parameters associated with data configured for communication via wireless links including at least one reception link and at least one transmission link, selecting a full-duplex (FD) slot type for communication of the data via the wireless links, wherein the FD slot type is based on the one or more traffic parameters, and communicating the data with one or more wireless nodes via the wireless links in accordance with the selected FD slot type.
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公开(公告)号：US20200322961A1
公开(公告)日：2020-10-08
申请号：US16821913
申请日：2020-03-17
Applicant: QUALCOMM Incorporated
Inventor： Chong LI , Junyi LI , Hao XU , Jing JIANG
Abstract: A first apparatus may puncture, in at least two subslots, a first type of data or control information with a second type of data or control information. The first apparatus may bundle the least two subslots within a subframe, and the subframe may include a portion for carrying acknowledgment (ACK)/negative acknowledgment (NACK) information associated with the second type of data or control information. The first apparatus may communicate with a user equipment (UE) during the at least two subslots within the subframe. A second apparatus may receive ACK/NACK information associated with a second type of data or control information. The second apparatus may reduce a transmission power for a first type of data or control information during a subsequent subframe when the ACK/NACK information indicates a negative acknowledgement.
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