公开(公告)号：US11477766B2

公开(公告)日：2022-10-18

申请号：US15596806

申请日：2017-05-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chirag Sureshbhai Patel ,  Tao Luo ,  Peter Gaal ,  Juan Montojo ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04L1/16

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for uplink control information (UCI) reporting. In certain aspects, a method includes receiving an indication of a number of symbols of a subframe available for uplink transmission. In certain aspects, the method further includes rate matching uplink control information (UCI) to the subframe based on the indication.

公开(公告)号：US11460532B2

公开(公告)日：2022-10-04

申请号：US17357857

申请日：2021-06-24

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Mukesh Kumar ,  Srinivas Yerramalli

IPC: H04W24/10 ,  H04W72/04 ,  G01S5/02 ,  H04L5/00

Abstract: A user equipment uses positioning reference signals (PRS) and non-PRS signals for position measurements. The non-PRS signals may be downlink and sidelink signals wherein the non-PRS are downlink or sidelink signals that are transmitted for purposes unrelated to positioning. Positioning assistance data is provided to the UE that associates the non-PRS signals with PRS-IDs. The association of the non-PRS signals to the PRS-IDs may be provided by a location server or serving base station. After performing positioning measurements using non-PRS signals, the UE reports measurement information using the PRS-IDs to identify the non-PRS signals used to generate the positioning measurements.

公开(公告)号：US11445549B2

公开(公告)日：2022-09-13

申请号：US16597672

申请日：2019-10-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian ,  Ozcan Ozturk ,  Tao Luo

IPC: H04W74/08 ,  H04L5/00 ,  H04W24/10 ,  H04W52/34 ,  H04W74/00

Abstract: Certain aspects of the present disclosure provide techniques for random-access channel (RACH) communication. For example, certain aspects provide a method for falling back from a 2-step RACH procedure to a 4-step RACH procedure.

公开(公告)号：US20220272548A1

公开(公告)日：2022-08-25

申请号：US17742317

申请日：2022-05-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W16/28 ,  H04W72/08 ,  H04W72/04 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, wireless devices operating in an unlicensed radio frequency spectrum band may perform directional listen-before-talk (LBT) procedures to gain access to a channel. In a beam-shrinking scheme for directional LBT, a wireless device may start an LBT procedure using a first beam (e.g., a wide beam). If the clear channel assessment (CCA) fails for the first beam (e.g., due to directional interference), the device may switch the LBT procedure to a second beam (e.g., a narrower beam). Depending on the direction of the interference source, the second beam may result in a successful LBT procedure. In a beam sweeping scheme for directional LBT, a wireless device may perform concurrent LBT over multiple narrow beams. If any beam of the set of beams detects frequent or continuous interference, the device may drop that beam from the concurrent LBT procedure.

公开(公告)号：US11382094B2

公开(公告)日：2022-07-05

申请号：US16134517

申请日：2018-09-18

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/04 ,  H04W16/14 ,  H04W72/02 ,  H04W74/08 ,  H04L1/18 ,  H04L1/16 ,  H04L5/00 ,  H04W84/04

Abstract: Optimized self-contained transmissions in new radio (NR) shared spectrum (NR-SS) networks are disclosed. In various aspect, during a transmission opportunity, the transmission configurations last slot of the transmission opportunity may be adjusted to provide a user equipment (UE) additional resource for processing and transmitting acknowledgement signaling. The transmission configurations adjusted may include sub-carrier spacing (SCS), uplink control channel formatting, and the like. Additional aspect provide for acknowledgement signaling from a first transmission opportunity to be requested and transmitted during the channel reservation signaling for the next transmission opportunity.

公开(公告)号：US11381981B2

公开(公告)日：2022-07-05

申请号：US16745281

申请日：2020-01-16

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04W16/14 ,  H04W16/28 ,  H04W72/08 ,  H04W72/04 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, wireless devices operating in an unlicensed radio frequency spectrum band may perform directional listen-before-talk (LBT) procedures to gain access to a channel. In a beam-shrinking scheme for directional LBT, a wireless device may start an LBT procedure using a first beam (e.g., a wide beam). If the clear channel assessment (CCA) fails for the first beam (e.g., due to directional interference), the device may switch the LBT procedure to a second beam (e.g., a narrower beam). Depending on the direction of the interference source, the second beam may result in a successful LBT procedure. In a beam sweeping scheme for directional LBT, a wireless device may perform concurrent LBT over multiple narrow beams. If any beam of the set of beams detects frequent or continuous interference, the device may drop that beam from the concurrent LBT procedure.

公开(公告)号：US11368816B2

公开(公告)日：2022-06-21

申请号：US17221615

申请日：2021-04-02

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

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.

公开(公告)号：US11349596B2

公开(公告)日：2022-05-31

申请号：US16406637

申请日：2019-05-08

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei

IPC: H04L1/00 ,  H04L5/00 ,  H04W24/10 ,  H04W80/02 ,  H04W76/27

Abstract: A method of wireless communication includes determining, by a user equipment (UE) in response to a failed transmission to the UE by a base station, to transmit a negative acknowledgment (NACK). The method additionally includes transmitting, by the UE to the base station, the NACK in an acknowledgement (ACK) resource previously allocated by the base station, and triggering at least one action, by the UE in response to at least one of the determination to transmit the NACK or the transmission of the NACK. The at least one action improves retransmission success rate. In another aspect, a method of wireless communication includes receiving, by a base station from a UE, a NACK in an ACK resource previously allocated by the base station, and triggering at least one action, by the base station in response to the receipt of the NACK. The at least one action improves retransmission success rate.

公开(公告)号：US11337214B2

公开(公告)日：2022-05-17

申请号：US16374593

申请日：2019-04-03

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Xiaoxia Zhang ,  Jing Sun ,  Kapil Bhattad ,  Srinivas Yerramalli ,  Chih-Hao Liu

IPC: H04W28/02 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for a base station transmitting to a user equipment (UE) a partial bandwidth configuration for uplink transmissions, where the partial bandwidth configuration may indicate a channel interlace and a portion of a channel bandwidth, for example, for autonomous uplink (AUL) transmissions. The base station may also transmit to the UE an AUL configuration including a group identifier. The UE may determine a starting offset with respect to an AUL subframe for a partial bandwidth transmission based on the group identifier. In some cases, different UEs may be grouped into groups of UEs allocated non-overlapping resources, and UEs allocated overlapping resources may have different starting offsets to begin transmitting. According to the determined starting offset, the UE may perform the partial bandwidth transmission over the channel interlace and the portion of the channel bandwidth.

公开(公告)号：US11324050B2

公开(公告)日：2022-05-03

申请号：US16597672

申请日：2019-10-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian ,  Ozcan Ozturk ,  Tao Luo

IPC: H04W74/08 ,  H04L5/00 ,  H04W24/10 ,  H04W52/34 ,  H04W74/00

Abstract: Certain aspects of the present disclosure provide techniques for random-access channel (RACH) communication. For example, certain aspects provide a method for falling back from a 2-step RACH procedure to a 4-step RACH procedure.