公开(公告)号：US20220086819A1

公开(公告)日：2022-03-17

申请号：US17473674

申请日：2021-09-13

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Jing Sun ,  Chih-Hao Liu ,  Rajat Prakash ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04W28/06

Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a configuration message indicating a group common control resource allocated to a set of UEs that includes the UE, identifying a hashing function assigned to the UE for detecting control messaging communicated via the group common control resource that is addressed to the UE, receiving, via the group common control resource, a control message indicating addressing data and a bitmap, and processing the addressing data using the hashing function and the bitmap to determine applicability of the control message to the UE.

公开(公告)号：US11265887B2

公开(公告)日：2022-03-01

申请号：US16566566

申请日：2019-09-10

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei ,  Tamer Kadous

IPC: H04W72/12 ,  H04W76/27 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine that a serving base station of the UE has obtained access to a wireless channel of a shared radio frequency spectrum band during a transmission opportunity that is separate from a scheduled uplink transmission by the UE. The UE may perform, based at least in part on the determination, a clear channel assessment (CCA) procedure on the wireless channel during a designated quiet portion of the transmission opportunity. The UE may transmit an unsolicited CCA status report to the serving base station during the transmission opportunity based at least in part on the CCA procedure.

公开(公告)号：US20210400732A1

公开(公告)日：2021-12-23

申请号：US17229642

申请日：2021-04-13

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Jing Sun ,  Xiaoxia Zhang ,  Chih-Hao Liu ,  Ozcan Ozturk

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, user equipment (UEs) may communicate over sidelink channels in a shared (e.g., unlicensed) channel bandwidth. A UE may implement sub-channel-based occupancy time sharing for the unlicensed sidelink to improve resource usage. The UE may gain access to the shared channel bandwidth for an occupancy time and may transmit a sharing indicator indicating a portion of resources of the shared channel bandwidth for the occupancy time. The UE may transmit a time-division multiplexing sharing indicator to share a portion of slots of the occupancy time, a frequency-division multiplexing sharing indicator to share a portion of sub-channels of the shared channel bandwidth, or some combination thereof. A UE receiving the sharing indicator may identify the shared resources and may transmit in these shared resources (e.g., without performing a full contention process for an occupancy time).

公开(公告)号：US11147100B2

公开(公告)日：2021-10-12

申请号：US16537343

申请日：2019-08-09

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue ,  Lorenzo Ferrari

IPC: H04W28/26 ,  H04W74/08 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may perform a clear channel assessment on a medium to determine if the medium is available for communications with a second wireless device. Based on a successful clear channel assessment, the first wireless device may transmit a medium reservation message to the second wireless device. The second wireless device may then transmit a reservation response message to the first wireless device, where the reservation response message includes synchronization information for the first device to synchronize with the second wireless device. The synchronization information may include a duration of a channel occupancy time, a duration of a synchronous contention window, and/or a duration in which the first wireless device is to maintain synchronization with the second wireless device. Accordingly, the first wireless device and the second wireless device may communicate based on the synchronization information via the medium.

公开(公告)号：US20210250932A1

公开(公告)日：2021-08-12

申请号：US17248248

申请日：2021-01-15

Applicant: QUALCOMM INCORPORATED

Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei

IPC: H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04L5/00

Abstract: Wireless communications systems and methods related to uplink communications with transmission on-off patterns and frequency-hopping in a shared radio frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a plurality of uplink (UL) transmission on-off patterns that are offset from each other in time. The first wireless communication device communicates, with the second wireless communication device in an unlicensed band, a first UL communication signal based on a first UL transmission on-off pattern of the plurality of UL transmission on-off patterns.

公开(公告)号：US20210219283A1

公开(公告)日：2021-07-15

申请号：US17247121

申请日：2020-11-30

Applicant: QUALCOMM INCORPORATED

Inventor： Yisheng Xue ,  Chih-Hao Liu ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei

IPC: H04W72/04 ,  H04W28/26

Abstract: Wireless communications systems and methods related to autonomous sidelink communication are provided. A first user equipment (UE) communicates, in a first subband of a plurality of subbands within a shared radio frequency band during a first time period, first sidelink control information (SCI) associated with a second subband of the plurality of subbands. The first UE communicates, with the second UE, first sidelink data in the second subband during the first time period based on the first SCI. The first UE communicates, with the second UE in the first subband during a second time period, second SCI associated with a third subband of the plurality of subbands, the third subband being different from the second subband based on a frequency hopping pattern. The first UE communicates, with the second UE, second sidelink data in the third subband during the second time period based on the second SCI.

公开(公告)号：US20210211912A1

公开(公告)日：2021-07-08

申请号：US16734254

申请日：2020-01-03

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Sanaz Barghi ,  Pouriya Sadeghi ,  Supratik Bhattacharjee ,  Taesang Yoo ,  Xiaoxia Zhang ,  Yisheng Xue

IPC: H04W24/10 ,  H04W24/08 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a request that the UE report a predicted future channel state information measurement. Upon receiving the request, the UE may measure, during a first time period, a channel to obtain measured channel state information. The UE may then determine the predicted future channel state information for a second time period based on the measured channel state information. In some case, the second time period may be subsequent to the first time period. Upon determining the predicted future channel state information measurement, the UE may transmit, to the base station, a channel state information report. In some aspects, the channel state information report may be indicative of the predicted future channel state information measurement.

公开(公告)号：US20210176669A1

公开(公告)日：2021-06-10

申请号：US17111222

申请日：2020-12-03

Applicant: QUALCOMM INCORPORATED

Inventor： Seyed Ali Akbar Fakoorian ,  Jing Sun ,  Yisheng Xue ,  Xiaxia Zhang

IPC: H04W28/26 ,  H04W72/02 ,  H04W72/04 ,  H04L5/00 ,  H04W28/02 ,  H04W72/12

Abstract: Wireless communications systems and methods related to a sidelink user equipment (UE) reserving resources for multiple sidelinks are provided. A first wireless communication device communicates, with a second wireless communication device, a reservation indicating a plurality of reserved resources for a plurality of sidelink communications. The first wireless communication device communicates, with a third wireless communication device, a first sidelink communication of the plurality of sidelink communications using a first resource of the plurality of reserved resources.

公开(公告)号：US20210127421A1

公开(公告)日：2021-04-29

申请号：US17083222

申请日：2020-10-28

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/04

Abstract: Channel access enhancement for new radio-unlicensed (NR-U) operations are disclosed. In attempting access to a shared communication channel, both base stations and user equipments (UEs) may operate similarly to load-based equipment (LBE) devices by performing extended clear channel access (eCCA) operations independently, such that each of the base stations and UEs may independently acquire the channel occupancy time (COT) of the shared communication spectrum.

公开(公告)号：US20210084684A1

公开(公告)日：2021-03-18

申请号：US17017245

申请日：2020-09-10

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue

IPC: H04W74/08 ,  H04W56/00

Abstract: Synchronization of listen before talk (LBT) back-off for synchronous access in unlicensed spectrum is disclosed. For nodes of a coordinated group of nodes, when one or more such nodes detects a failed LBT attempt, it pauses the contention widow countdown at the current counter value. According to such aspects, a procedure may be provided that specifies when such nodes can restart the contention window countdown using the current counter value or when the nodes can redraw the pseudo-random number for the contention window countdown in order to synchronize the contention window counters.