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公开(公告)号：US20230056249A1
公开(公告)日：2023-02-23
申请号：US17407857
申请日：2021-08-20
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Jing Sun , Xiaoxia Zhang , Chih-Hao Liu
Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive control signaling indicating multiple sidelink channels of a sidelink resource pool, a mapping between each sidelink channel of the multiple sidelink channels to a corresponding feedback channel of multiple feedback channels, and a time gap between sidelink channel transmission and feedback transmission with respect to a feedback channel sub-slot of multiple feedback channel sub-slots within a slot. Accordingly, the first wireless device may receive a sidelink data message on a first sidelink channel of the multiple sidelink channels and may transmit sidelink feedback information for the sidelink data message in the feedback channel sub-slot of the slot on a first feedback channel of the multiple feedback channels corresponding to the first sidelink channel. The described techniques may enable the first wireless device to transmit the sidelink feedback information with reduced latency and improved reliability.
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公开(公告)号：US11582801B2
公开(公告)日：2023-02-14
申请号：US17117502
申请日：2020-12-10
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Xiaoxia Zhang , Chih-Hao Liu , Aleksandar Damnjanovic , Jing Sun , Yongbin Wei
Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may perform a listen before talk (LBT) procedure on a channel bandwidth using an energy detection (ED) threshold. The ED threshold being associated with a transmission bandwidth that is narrower than the channel bandwidth. The wireless device may also, responsive to a successful LBT procedure, transmit on the transmission bandwidth according to a frequency hopping pattern during a first channel occupancy time (COT). The frequency hopping pattern comprises a first resource allocation and a second resource allocation different from the first resource allocation.
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公开(公告)号：US11582800B2
公开(公告)日：2023-02-14
申请号：US17143825
申请日：2021-01-07
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Aleksandar Damnjanovic , Jing Sun , Yisheng Xue , Xiaoxia Zhang , Ozcan Ozturk , Rajat Prakash , Juan Montojo , Tao Luo , Peter Gaal
IPC: H04B7/00 , H04W74/08 , H04L5/16 , H04W72/04 , H04W72/044
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine an adjusted contention window size for a listen-before-talk (LBT) procedure that increases channel access time fairness between a plurality of different groups of UEs. The UE may determine, via the LBT procedure, that a channel is idle based at least in part on the adjusted contention window size. The UE may transmit, to other UEs in a group of UEs that includes the UE, control information that enables a group channel occupancy time (COT) associated with the channel to be shared with the other UEs in the group of UEs. Numerous other aspects are described.
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公开(公告)号：US20230026028A1
公开(公告)日：2023-01-26
申请号：US17377205
申请日：2021-07-15
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Jing Sun , Chih-Hao Liu , Xiaoxia Zhang , Rajat Prakash
Abstract: This disclosure provides systems, methods, and devices for wireless communication that support managing allocation of configured grant (CG) resources for uplink transmissions using a polynomial over Galois field in a wireless communication system. In particular, a user equipment (UE) may be configured (e.g., by a base station) to determine a resource to access, from a resource pool configured for each CG occasion of a CG configuration, based on a polynomial over Galois field configured for the UE. The polynomial over Galois field may include a parameter p, and the UE may be configured with a mapping that maps the absolute time (e.g., a slot index or a symbol index) of a GC occasion to an index between 0 and p−1 that is used as input to the polynomial The result of the polynomial is used to determine the resource to access by the UE at the CG occasion.
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公开(公告)号：US20230020766A1
公开(公告)日：2023-01-19
申请号：US17374814
申请日：2021-07-13
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Jing Sun , Yisheng Xue , Xiaoxia Zhang
IPC: H04W72/04
Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE, a control message that indicates a duration of time the second UE has reserved at least a first subchannel of a first subband of a set of shared spectrum subbands. The duration of time may include a quantity of time periods. The first UE may transmit, during a time period of the quantity of time periods and in a second subchannel of the first subband, a power reservation signal that indicates a transmission power associated with the first UE beginning transmission to a third UE in a second subband of the set of shared spectrum subbands and partway through the time period. The first UE may transmit signaling to the third UE in the second subband partway through the time period and after transmitting the power reservation signal.
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Patent Agency Ranking
公开(公告)号：US20220417947A1
公开(公告)日：2022-12-29
申请号：US17357222
申请日：2021-06-24
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Xiaoxia Zhang , Sony Akkarakaran , Yisheng Xue , Jing Sun
Abstract: This disclosure provides systems, methods and apparatus for partitioning a physical sidelink shared channel (PSSCH) into multiple shortened PSSCHs (sPSSCHs) within a slot and selecting a transmit power for each sPSSCH. In one aspect, a transmitting user equipment (UE) may select the transmit power for each sPSSCH in accordance with an open loop power control operation. In some examples, the transmitting UE may select a common transmit power for each sPSSCH. Alternatively, the transmitting UE may perform independent power control operations for each sPSSCH and may cap variation in transmit power across sPSSCHs as a result of employing lower and upper bound transmit powers. Additionally, or alternatively, the transmitting UE may provide a default beta offset for the set of receiving UEs via sidelink control information (SCI) part one (SCI-1) and may provide beta offset updates via each SCI part two (SCI-2) transmission in the multiple sPSSCHs.
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公开(公告)号：US11523431B2
公开(公告)日：2022-12-06
申请号：US16990724
申请日：2020-08-11
Applicant: QUALCOMM Incorporated
Inventor： Yisheng Xue , Xiaoxia Zhang , Aleksandar Damnjanovic , Jing Sun , Yongbin Wei
Abstract: Certain aspects of the present disclosure provide techniques for reuse one channel access for new radio communications in unlicensed spectrum. A method that may be performed by a first base station (BS) includes occupying a bandwidth, based on a category 4 (CAT4) listen before talk (LBT) procedure on the bandwidth, wherein the CAT4 LBT procedure is based on a first contention window (CW); arranging a category 2 (CAT2) LBT occasion for the bandwidth during a channel occupancy time (COT) for the bandwidth; and receiving an indication that at least a second BS has occupied the bandwidth during the CAT2 LBT occasion.
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公开(公告)号：US20220361049A1
公开(公告)日：2022-11-10
申请号：US17313654
申请日：2021-05-06
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxia Zhang , Chih-Hao Liu , Yisheng Xue , Jing Sun , Sony Akkarakaran , Tao Luo
Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive control signaling indicating a configuration for performing a sidelink discontinuous reception procedure, where the configuration indicates a duration of a timer associated with an active duration for the first UE to receive sidelink retransmissions during the sidelink discontinuous reception procedure. The UE may then receive a first sidelink communication including data and may, in some cases, transmit feedback requesting a retransmission of the data. The UE may then receive second sidelink communication including the retransmitted data. Prior to receiving the second sidelink communication including the retransmitted data, the UE may initiate the timer according to the configuration. Thus, the UE may be in an active mode to receive the second sidelink communication.
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259.发明申请公开(公告)号：US20220346120A1
公开(公告)日：2022-10-27
申请号：US17237804
申请日：2021-04-22
Applicant: QUALCOMM Incorporated
Inventor： Xiaojie Wang , Jing Sun , Xiaoxia Zhang , Yisheng Xue , Piyush Gupta
Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication over a sidelink between a transmitting user equipment (UE) and a receiving UE. The receiving UE may receive a configuration of multiple resource pools for sidelink communications. The transmitting UE may transmit at least two repetitions of a sidelink control information (SCI) on at least two of the multiple resource pools. Each repetition of the SCI includes a reservation for a physical sidelink shared channel (PSSCH) on a respective resource pool. The receiving UE may perform soft combining on the at least two repetitions of the SCI to determine resources for the PSSCH. The receiving UE may decoding the PSSCH based on the SCI, for example, by combining multiple repetitions of the PSSCH on the reservations indicated by the SCI.
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公开(公告)号：US11483864B2
公开(公告)日：2022-10-25
申请号：US17090357
申请日：2020-11-05
Applicant: QUALCOMM INCORPORATED
Inventor： Yisheng Xue , Chih-Hao Liu , Xiaoxia Zhang , Jing Sun , Yongbin Wei , Seyed Ali Akbar Fakoorian
Abstract: Wireless communications systems and methods related to autonomous sidelink communication in a shared radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) are provided. A first user equipment (UE) performs a listen-before-talk (LBT) in a shared radio frequency band during at least a portion of a first sidelink frame. The first UE determines a channel occupancy time (COT) in the shared radio frequency band based on the LBT. A beginning of the COT is within the first sidelink frame and offset from a boundary of the first sidelink frame. The COT includes one or more sidelink frames subsequent to the first sidelink frame. The first UE transmits, in the shared radio frequency band, a COT indication signal at the beginning of the COT within the first sidelink frame. The COT indication signal includes COT sharing information for UEs to share the one or more sidelink frames.
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