公开(公告)号：US20220209842A1

公开(公告)日：2022-06-30

申请号：US17137257

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Sourjya DUTTA ,  Kapil GULATI ,  Junyi LI ,  Gabi SARKIS

IPC: H04B7/06 ,  H04B7/08 ,  H04W16/28 ,  H04W76/27 ,  H04W24/10

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for beam training resource selection by a sidelink UE. A first UE may determine to perform beam training with a second UE in a set of beam training resources. The set of beam training resources may include a first subset of beam training resources for UEs without a RRC connection and a second subset of beam training resources for UEs with a RRC connection, where the first subset of beam training resources and the second subset of beam training resources are non-overlapping. The first UE may determine whether the first UE is RRC connected with the second UE and perform beam training in one of the first subset of beam training resources or the second subset of beam training resources based on whether the first UE is RRC connected with the second UE.

公开(公告)号：US20220086700A1

公开(公告)日：2022-03-17

申请号：US17135743

申请日：2020-12-28

Applicant: QUALCOMM Incorporated

Inventor： Tien Viet NGUYEN ,  Sourjya DUTTA ,  Kapil GULATI ,  Gabi SARKIS ,  Shailesh PATIL

IPC: H04W28/26 ,  H04W72/02 ,  H04W4/40 ,  H04W24/10 ,  H04B17/318

Abstract: To facilitate coexistence of a first radio access technology (RAT) and a second RAT, methods, apparatuses, and computer program products are provided. An example method of a first wireless device operating based on a RAT includes receiving a sidelink resource reservation from a second wireless device based on a second RAT, the sidelink resource reservation indicating a first set of resources. The example method further includes determining whether to exclude, from a candidate resource set for the first RAT within a sidelink resource pool for the first RAT, resources that overlap with the set of reserved resources for the second RAT. The example method further includes transmitting a sidelink transmission using one or more sidelink transmission resources selected from the candidate resource set in the sidelink resource pool for the first RAT.

公开(公告)号：US20210392652A1

公开(公告)日：2021-12-16

申请号：US17319227

申请日：2021-05-13

Applicant: QUALCOMM Incorporated

Inventor： Sourjya DUTTA ,  Shuanshuan WU ,  Kapil GULATI ,  Junyi LI

IPC: H04W72/08

Abstract: Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The method generally includes taking received signal power measurements on a first transmitter receiver point (TRP) of the UE and a second TRP of the UE, determining resources to exclude from a pool of resources for sidelink transmissions based on the received signal power measurements taken on the first and second TRPs, selecting resources from the pool of resources for sidelink communications based at least in part on the determination of resources to exclude, and transmitting on the sidelink, on one or more of the first and second TRPs, using the selected resources.

公开(公告)号：US20210344380A1

公开(公告)日：2021-11-04

申请号：US17243296

申请日：2021-04-28

Applicant: QUALCOMM Incorporated

Inventor： Sourjya DUTTA ,  Kapil GULATI ,  Shuanshuan WU ,  Junyi LI

IPC: H04B7/01 ,  H04L5/00 ,  H04W72/04 ,  H04W4/40

Abstract: A method of wireless communication by a transmitting sidelink user equipment (UE) determines at least one quasi-co-location (QCL) relationship between antenna ports of the transmitting sidelink UE. The QCL relationship corresponds to carrier frequency offset (CFO), average delay, delay spread, Doppler shift, and/or Doppler spread across the antenna ports of the transmitting sidelink UE. Each port maps to a different transmission and reception point (TRP). The method also indicates the QCL relationship(s) to a receiving sidelink UE. A method of wireless communication by a receiving sidelink UE receives a message from TRPs of a transmitting sidelink UE. The message indicates a QCL assumption for the TRPs. The method also individually measures reference signals received from each transmission port of the TRPs. The method may also determine whether signaling from the TRPs satisfies all conditions for the QCL assumption, and report to the transmitting sidelink UE a result of the determining.