公开(公告)号：US11818738B2

公开(公告)日：2023-11-14

申请号：US17109892

申请日：2020-12-02

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Mukesh Kumar ,  Srinivas Yerramalli

IPC: H04W72/51 ,  H04W48/10 ,  H04W72/542 ,  H04W74/00 ,  H04W72/08 ,  H04W74/08

CPC classification number: H04W72/51 ,  H04W48/10 ,  H04W72/542 ,  H04W74/004 ,  H04W74/0833 ,  H04W74/002

Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) determines at least one random access channel (RACH) preamble from a first set of RACH preambles, wherein the first set of RACH preambles is for positioning purposes and a second set of RACH preambles is for communication purposes, and wherein the first set of RACH preambles and the second set of RACH preambles are associated with at least one transmission-reception point (TRP), transmits, to the at least one TRP, the at least one RACH preamble to indicate that the UE is involved in a positioning session, receives, from the at least one TRP, in response to transmitting the at least one RACH preamble, an allocation of one or more resources for transmission of uplink positioning signals for the positioning session, and transmits the uplink positioning signals via the one or more resources.

公开(公告)号：US11812277B2

公开(公告)日：2023-11-07

申请号：US17167024

申请日：2021-02-03

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Tao Luo ,  Vinay Chande ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W16/14 ,  H04W74/08 ,  H04W76/27 ,  H04W80/02 ,  H04W56/00 ,  H04W72/30

CPC classification number: H04W16/14 ,  H04W56/001 ,  H04W72/30 ,  H04W74/0816 ,  H04W76/27 ,  H04W80/02

Abstract: Methods, systems, and devices for wireless communications are described for silencing signal transmissions by a user equipment (UE). Silencing signals may be transmitted periodically during shared spectrum downlink communications from a serving base station to the UE to prevent an interfering node from passing a listen before talk (LBT) procedure. The silencing signal transmissions may be configured by the base station and enabled in cases where potential interfering nodes are detected. An interfering node may be notified that silencing signals are being used, and may adjust a periodicity or wait time of its LBT procedures based on the silencing signal periodicity.

公开(公告)号：US11800559B2

公开(公告)日：2023-10-24

申请号：US17170015

申请日：2021-02-08

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W74/08 ,  H04W72/1268 ,  H04W72/23

CPC classification number: H04W74/0808 ,  H04W72/1268 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a grant scheduling an acknowledgement feedback transmission for the grant. The UE may identify, based at least in part on a first timing associated with the grant, a second timing associated with the acknowledgment feedback transmission, or a combination thereof, a duration for a channel clearance procedure to be performed before transmitting the acknowledgement feedback transmission. The UE may perform the channel clearance procedure using the identified duration. The UE may transmit the acknowledgement feedback transmission based at least in part on a result of the channel clearance procedure.

公开(公告)号：US11799703B2

公开(公告)日：2023-10-24

申请号：US17453458

申请日：2021-11-03

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04B1/7136 ,  H04B1/7143 ,  H04B1/7156 ,  H04L27/26

CPC classification number: H04L27/2602 ,  H04B1/7136 ,  H04B1/7143 ,  H04B1/7156 ,  H04L27/2646 ,  H04B2001/71365 ,  H04B2001/71563

Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.

公开(公告)号：US11764855B2

公开(公告)日：2023-09-19

申请号：US17136204

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04B7/08 ,  H04W74/08 ,  H04W48/02 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04B7/088 ,  H04B7/0888 ,  H04L5/0053 ,  H04W48/02 ,  H04W72/23 ,  H04W74/0875

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for managing beam selection. In one aspect, an initiating wireless device may determine whether a pre-grant acknowledgement associated with a first beam has been received from a responding wireless device within an expected receive time. The initiating wireless device may generate an indication to prevent the initiating wireless device from using the first beam for a blocking duration in response to determining that the pre-grant acknowledgement associated with the first beam has not been received within the expected receive time.

公开(公告)号：US11737094B2

公开(公告)日：2023-08-22

申请号：US17159427

申请日：2021-01-27

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo ,  Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Wooseok Nam ,  Sungwoo Park ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Akula Aneesh Reddy

IPC: H04W72/20 ,  H04W72/0446 ,  H04W72/0453

CPC classification number: H04W72/20 ,  H04W72/0446 ,  H04W72/0453

Abstract: In an aspect, a PDCCH and a PDSCH are transmitted by a BS to a UE, whereby the PDCCH includes a first DCI part and the PDSCH includes a second DCI part (e.g., a 2-part DCI). In an example a first grant associated with the second DCI part is offset relative to a slot position of the second DCI part, whereas a second grant associated with the second DCI part is offset relative to the slot position to which the first grant is offset. In another aspect, two or more grants are grouped together, with the respective group being mapped to a PUCCH.

公开(公告)号：US20230199839A1

公开(公告)日：2023-06-22

申请号：US18173640

申请日：2023-02-23

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/21

CPC classification number: H04W74/0808 ,  H04L5/0055 ,  H04W72/21

Abstract: A method of wireless communication includes performing, by a user equipment (UE) device, a channel sensing operation during a first window of a frame period associated with a wireless communication network. Performing the channel sensing operation includes performing a direction-based scan of one or more beams associated with the wireless communication network, and the channel sensing operation is included in a joint sensing operation performed with a base station. The method further includes, based at least in part on a result of the channel sensing operation, determining whether to perform, during a second window of the frame period, one or more communication operations with the base station.

公开(公告)号：US11678379B2

公开(公告)日：2023-06-13

申请号：US17249167

申请日：2021-02-22

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Xiaoxia Zhang ,  Jing Sun ,  Srinivas Yerramalli ,  Zhifei Fan ,  Wooseok Nam ,  Tao Luo ,  Juan Montojo

IPC: H04L27/26 ,  H04L5/00 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04L5/0053 ,  H04L27/2607

Abstract: Wireless communications systems and methods related to random access signaling are provided. A user equipment (UE) may transmit to a base station (BS) in a frequency band, a random access signal including at least one of a length in time or a length in frequency that is based on a subcarrier spacing (SCS) in the frequency band. The BS may receive the random access signal and transmit a response to the random access signal.

公开(公告)号：US11653345B2

公开(公告)日：2023-05-16

申请号：US17029469

申请日：2020-09-23

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Vinay Chande ,  Tao Luo

IPC: H04W72/04 ,  H04W72/044 ,  H04L5/00

CPC classification number: H04W72/046 ,  H04L5/0048

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting a beam to be allocated for transmitting downlink (DL) data to user equipment (UE). In some implementations, a UE receives a reference signal on each of a number of beams associated with a base station, and determines a delay spread value for each beam. The UE identifies each beam for which the determined channel delay spread value is less than a threshold value, and determines a reference signal received power (RSRP) level for each identified beam. The UE transmits an indication of the determined RSRP levels of the identified beams to the base station, and receives, in response to the transmitted indication, a selection of the beam to be allocated for DL transmissions to the UE.

公开(公告)号：US11647361B2

公开(公告)日：2023-05-09

申请号：US17839295

申请日：2022-06-13

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Stephen William Edge ,  Lorenzo Ferrari ,  Rajat Prakash ,  Xiaoxia Zhang ,  Alexandros Manolakos ,  Sven Fischer

IPC: H04W4/029 ,  G01S5/02 ,  H04L5/00

CPC classification number: H04W4/029 ,  G01S5/0236 ,  G01S5/02216 ,  H04L5/0048

Abstract: A wireless network including user equipment (UE) and base stations is configured to perform position determination with low latency and synchronized to a common time within a wireless network. The UE and base stations are configured to perform positioning measurements at a specific time point or within a window around the time point in a measurement period. The time point may be relative to a timing event within the wireless network, such as the beginning or end of a positioning reference signal window or a specific message in a layer 1 or layer 2 transmission. A location server may be provided with the positioning measurements or a position estimate from the UE and provide the position estimate to an external client within the measurement period.