公开(公告)号：US11805512B2

公开(公告)日：2023-10-31

申请号：US17485006

申请日：2021-09-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/1263 ,  H04W72/25 ,  H04W72/566 ,  H04L1/1867 ,  H04W72/044

CPC classification number: H04W72/1263 ,  H04L1/1896 ,  H04W72/046 ,  H04W72/25 ,  H04W72/566

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device, such as a user equipment (UE), may be configured to communicate with one or more other wireless devices (e.g., another UE) via sidelink communications. The first wireless device may receive an indication of a schedule of resources for sidelink communications to be performed over a communication beam, the schedule indicating a set of resources corresponding to a beam configuration for the sidelink communications with a second wireless device. The first wireless device may communicate with the second wireless device via one or more sidelink channels based on configuring the communication beam using the beam configuration over the set of resources. In some examples, the indication of the schedule of resources may be received in a confirmation of the schedule established by the second wireless device or, in some examples, in a request to establish the schedule.

公开(公告)号：US20230319623A1

公开(公告)日：2023-10-05

申请号：US18194993

申请日：2023-04-03

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W28/02 ,  H04B7/0456 ,  H04B7/06 ,  H04W72/02 ,  H04W72/0453 ,  H04W72/1263 ,  H04W80/02 ,  H04W72/23

CPC classification number: H04W28/0278 ,  H04B7/0486 ,  H04B7/0626 ,  H04B7/0632 ,  H04W72/02 ,  H04W72/0453 ,  H04W72/1263 ,  H04W80/02 ,  H04W72/23

Abstract: Wireless communications systems and methods related to providing subchannel selection or recommendation and/or channel state information (CSI) for sidelink communications (e.g., operating in mode-1 radio resource allocation (RRA) via a buffer status report (BSR) are provided. A first user equipment (UE) transmits, to a base station (BS), a BSR indicating subchannel information associated with one or more UEs. The UE receives, from the BS in response to the BSR report, a grant for transmitting a first sidelink transmission to a second UE of the one or more UEs. The UE transmits, to the second UE based on the grant, the first sidelink transmission.

公开(公告)号：US11737095B2

公开(公告)日：2023-08-22

申请号：US17350517

申请日：2021-06-17

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/20 ,  H04L5/00 ,  H04W72/0453

CPC classification number: H04W72/20 ,  H04L5/0055 ,  H04W72/0453

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support an index modulation (IM)-based acknowledgement codebook so use with sidelink feedback. In a first aspect, a first UE receives at least one sidelink transmission from a second UE with a sidelink control information (SCI) message that triggers least one IM-based feedback message codebook. The first UE may determine an IM-based feedback message sequence, determine, based on the feedback sequence, a resource for transmission of the IM-based feedback message, wherein a resource index corresponds to the determined feedback message sequence. The first UE may then transmit the IM-based feedback message codebook on the determined resource to the second UE over the sidelink. Other aspects and features are also claimed and described.

公开(公告)号：US11729825B2

公开(公告)日：2023-08-15

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 ,  H04W72/20 ,  H04W72/23

CPC classification number: H04W74/0808 ,  H04W72/20 ,  H04W72/23 ,  H04W74/0833

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：US20230239920A1

公开(公告)日：2023-07-27

申请号：US17585128

申请日：2022-01-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W72/04 ,  H04W28/26

CPC classification number: H04W74/0808 ,  H04W72/0406 ,  H04W28/26

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may obtain a channel occupancy time (COT) in an unlicensed frequency spectrum band. The COT may include an initial time interval for an initial transmission and a subsequent time interval for a subsequent transmission. In the initial time interval, the UE may transmit control information and data to another UE, where the control information indicates the subsequent time interval. The other UE may selectively perform communications during the subsequent time interval. The UE may perform the subsequent transmission during the subsequent time interval.

公开(公告)号：US11711849B2

公开(公告)日：2023-07-25

申请号：US17301652

申请日：2021-04-09

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08 ,  H04W72/23

CPC classification number: H04W74/0816 ,  H04W72/23 ,  H04W74/0808

Abstract: Wireless communications systems and methods related to sidelink communications in an unlicensed frequency band are provided. A user equipment (UE) receives, from a base station (BS), a first downlink control information (DCI) associated with a first listen-before-talk (LBT) time. The UE determines a first sidelink transmission opportunity for communicating in an unlicensed frequency band at the first LBT time based on the first DCI.

公开(公告)号：US11711109B2

公开(公告)日：2023-07-25

申请号：US17324651

申请日：2021-05-19

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W74/02 ,  H04B1/713 ,  H04W72/044 ,  H04B7/26 ,  H04L12/413 ,  H04L5/00 ,  H04L12/46 ,  H04J11/00

CPC classification number: H04B1/713 ,  H04B7/2643 ,  H04L5/0012 ,  H04L5/0037 ,  H04L12/413 ,  H04L12/4625 ,  H04W72/044 ,  H04J11/0026 ,  H04L5/001

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

公开(公告)号：US11706709B2

公开(公告)日：2023-07-18

申请号：US17360697

申请日：2021-06-28

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Jing Sun ,  Xiaoxia Zhang ,  Junyi Li ,  Ozcan Ozturk ,  Chih-Hao Liu ,  Sony Akkarakaran

IPC: H04W52/02

CPC classification number: H04W52/0216

Abstract: Methods, systems, and devices for wireless communications are described. A hub user equipment (UE) in a star topology may broadcast to a set of peripheral UEs indicating slots when the hub UE will not be in a transmission mode. The hub UE may broadcast a slot format indication to the peripheral UEs to indicate operating modes in a set of slots. In a first group of slots, the hub UE may operate in a forward mode, transmitting sidelink communications to the peripheral UEs. In a second group of slots, the hub UE may operate in a reverse mode, receiving sidelink communications from the peripheral UEs. In slots when the hub UE operates in the reverse mode, if a peripheral UE does not have data or control information, the peripheral UE may enter a sleep mode in one or more slots of the second group to save power.

公开(公告)号：US11696284B2

公开(公告)日：2023-07-04

申请号：US16563730

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Srinivas Yerramalli ,  Qingjiang Tian ,  Andrei Dragos Radulescu ,  Tamer Kadous

IPC: H04W72/00 ,  H04W72/20 ,  H04L5/00 ,  H04W24/10 ,  H04W28/02 ,  H04W72/541 ,  H04W72/542

CPC classification number: H04W72/20 ,  H04L5/0048 ,  H04L5/0055 ,  H04W24/10 ,  H04W28/0236 ,  H04W72/541 ,  H04W72/542

Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.

公开(公告)号：US11683770B2

公开(公告)日：2023-06-20

申请号：US17337346

申请日：2021-06-02

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04J11/00 ,  H04L5/00 ,  H04L27/26 ,  H04W16/14 ,  H04W56/00 ,  H04W72/04 ,  H04W72/27 ,  H04W72/0453

CPC classification number: H04W56/0015 ,  H04J11/0069 ,  H04J11/0073 ,  H04J11/0076 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2614 ,  H04W16/14 ,  H04J2011/0096 ,  H04W72/0453 ,  H04W72/27

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization sequence may be generated by applying a first phase shift to the first synchronization sequence.