公开(公告)号：US10944604B2

公开(公告)日：2021-03-09

申请号：US16412502

申请日：2019-05-15

Applicant: QUALCOMM INCORPORATED

Inventor： Tianyang Bai ,  Juergen Cezanne ,  Navid Abedini ,  Bilal Sadiq ,  Junyi Li ,  Vasanthan Raghavan ,  Jung Ho Ryu ,  Kiran Venugopal ,  Jianghong Luo

IPC: H04W72/04 ,  H04L27/26 ,  H04W36/06

Abstract: A method for adjusting communication symbol sub-carrier frequency spacing based on a communication symbol priority at a communication beam transition location includes identifying a communication beam transition location in time in a communication transmission time interval (TTI) where a communication beam transition will occur, and determining a configuration of a communication symbol at least partly based on the identified communication beam transition location and a priority of the communication symbol. The configuration may comprise an extended guard period created by adjusting the sub-carrier frequency spacing of at least one of the symbols that occurs at least one of immediately following the communication beam transition location and immediately preceding the communication beam transition location, so that the sub-carrier frequency spacing for the symbol that occurs at least one of immediately following the communication beam transition location and immediately preceding the beam transition location is different than a sub-carrier frequency spacing for a symbol that does not at least one of immediately precede the communication beam transition location and immediately follow the communication beam transition location.

公开(公告)号：US10938545B2

公开(公告)日：2021-03-02

申请号：US15713225

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Juergen Cezanne ,  Sundar Subramanian ,  Bilal Sadiq ,  Ashwin Sampath ,  Junyi Li

IPC: H04L12/00 ,  H04L7/04 ,  H04L5/00 ,  H04L27/26 ,  H04J1/02 ,  H04W52/36 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communication are described. Synchronization signals may be transmitted using a set of phase offsets over different component carriers or using a single component carrier for each antenna port. For example, a base station may identify a set of synchronization signals (e.g., a set of primary synchronization signals (PSSs)) to be transmitted over one or multiple component carriers. In some cases, each PSS may be associated with a different component carrier, and the base station may apply a different phase offset to each PSS when transmitting the set of PSSs on the component carriers. In some examples, the base station may transmit the PSSs on the component carriers using a different antenna port for each component carrier.

公开(公告)号：US10917158B2

公开(公告)日：2021-02-09

申请号：US15488401

申请日：2017-04-14

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Tao Luo ,  Sundar Subramanian ,  Junyi Li

IPC: H04M1/00 ,  H04B7/08 ,  H04B7/06 ,  H04W16/28 ,  H04B7/0417 ,  H04W40/24 ,  H04W28/02 ,  H01Q1/24 ,  H04B7/0404 ,  H04B7/0452 ,  H04W74/08

Abstract: A user equipment (UE) may be configured to perform a random access channel (RACH) procedure with a base station. As part of the RACH procedure, the base station may transmit a contention resolution message to the UE. The UE may receive, from the base station, the contention resolution message. The contention resolution message may indicate at least a beam index corresponding to a beam, such as a transmit beam of the base station. The UE may determine whether the beam index is applicable to the UE. The UE may communicate with the base station through the beam corresponding to the beam index when the beam index is applicable to the UE. For example, the UE may send an acknowledgement message to the base station, and the base station and UE may switch to a beam corresponding to the beam index after communication of the acknowledgement message.

公开(公告)号：US10911343B2

公开(公告)日：2021-02-02

申请号：US16418863

申请日：2019-05-21

Applicant: QUALCOMM Incorporated

Inventor： Bilal Sadiq ,  Navid Abedini ,  Muhammad Nazmul Islam ,  Junyi Li ,  Naga Bhushan ,  Alexandros Manolakos ,  Joseph Binamira Soriaga

IPC: H04W56/00 ,  H04L12/26 ,  H04B7/06 ,  H04B17/364 ,  H04B17/318

Abstract: Disclosed are techniques for determining a beam-specific timing advance for Round-Trip Time (RTT) estimation. In an aspect, a first node receives a plurality of beams transmitted by a second node on a wireless channel, selects a first beam from the plurality of beams for transmitting a timing response, determines a timing statistic, a timing difference, and a timing advance for the first beam, wherein the timing difference comprises a difference between the timing statistic and an earliest time of arrival of the plurality of beams, and wherein the timing advance comprises a multiple of the timing difference, and transmits the timing response for the first beam to the second node on the wireless channel, wherein the first node transmits the timing response after a time delay from the timing statistic of the first beam, wherein the time delay comprises a difference between a predetermined time delay and the timing advance.

公开(公告)号：US10893496B2

公开(公告)日：2021-01-12

申请号：US16193736

申请日：2018-11-16

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Navid Abedini ,  Bilal Sadiq ,  Peter Pui Lok Ang ,  Sundar Subramanian ,  Junyi Li ,  Sony Akkarakaran

IPC: H04W56/00 ,  H04W72/04 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for adjusting timing advance command parameters for specific beam pair links (BPLs) in a wireless communications system. In some cases, a base station may determine that transmission timing at a UE may be misaligned. The may send a timing advance (TA) command for the BPL. A UE may utilize more than one BPL, and may switch communications from a first BPL to second BPL. The second BPL may have a different timing misalignment than the first BPL, and the TA command sent by the base station may be insufficient to correct the timing misalignment of the second BPL. The base station may adjust the TA command parameters (e.g., TA command size or TA command granularity) so that the timing misalignment of the second BPL may be corrected.

公开(公告)号：US10863366B2

公开(公告)日：2020-12-08

申请号：US16013807

申请日：2018-06-20

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Raghu Narayan Challa ,  Ruhua He ,  Arvind Vardarajan Santhanam ,  Yong Li ,  Muhammad Nazmul Islam ,  Bilal Sadiq

IPC: H04W24/02 ,  H04B7/0408 ,  H04W36/30 ,  H04B7/08 ,  H04B7/06 ,  H04W72/12 ,  H04W72/04

Abstract: Aspects of the present disclosure relate to receiver beamforming for serving and neighbor cell measurements. An exemplary method generally includes communicating with one or more base stations using a first beam type, initiating a transition to communicating with at least one of the one or more base stations using a second beam type in response to an indication of a trigger event, and communicating with the at least one of the one or more base stations using the second beam type.

公开(公告)号：US10785080B2

公开(公告)日：2020-09-22

申请号：US16219545

申请日：2018-12-13

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Navid Abedini

IPC: H04L27/26 ,  H04L1/18 ,  H04L1/06 ,  H04W74/08 ,  H04W72/04 ,  H04B7/08 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, base stations and user equipment (UEs) may use beamforming for transmitting random access channel (RACH) messages. A UE may transmit multiple RACH preamble messages (e.g., within a random access response (RAR) window) to initiate a RACH procedure. The UE may transmit the RACH preamble messages in transmission opportunities corresponding to reference signals received from the base station. In some cases, the UE may determine the number of RACH preamble messages to transmit within the RAR window based on an ability of the UE to simultaneously monitor for a RAR message in response to each of the transmitted messages. In other cases, the UE may transmit an indication of UE capabilities to the base station. The base station may determine a RACH resource configuration for the UE based on the capabilities and may indicate the configuration to the UE.

公开(公告)号：US10736077B2

公开(公告)日：2020-08-04

申请号：US15970524

申请日：2018-05-03

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Sundar Subramanian ,  Navid Abedini ,  Haitong Sun ,  Tao Luo

IPC: H04W68/02 ,  H04W56/00 ,  H04W72/14 ,  H04W72/04 ,  H04W48/12 ,  H04W48/14 ,  H04W76/27

Abstract: Certain aspects of the present disclosure provide techniques for conveying information regarding a window for system information transmissions. Certain aspects of the present disclosure provide techniques for conveying information regarding a window for transmitting paging downlink control information (DCI) or paging messages.

公开(公告)号：US10715241B2

公开(公告)日：2020-07-14

申请号：US16038081

申请日：2018-07-17

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Juergen Cezanne ,  Sundar Subramanian ,  Ashwin Sampath ,  Bilal Sadiq ,  Junyi Li

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/08 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08

Abstract: A first apparatus may communicate with a user equipment through a first active beam. The first apparatus may determine that beam tracking is to be performed with the UE, including identifying a new beam for communication between the UE and the apparatus. The first apparatus may perform beam tracking with the UE based on the determination that beam tracking is to be performed. The first apparatus may communicate with the UE through a second active beam based on the beam tracking.

公开(公告)号：US20200220596A1

公开(公告)日：2020-07-09

申请号：US16783746

申请日：2020-02-06

Applicant: QUALCOMM Incorporated

Inventor： Sundar Subramanian ,  Juergen Cezanne ,  Bilal Sadiq ,  Muhammad Nazmul Islam ,  Navid Abedini ,  Junyi Li

IPC: H04B7/06 ,  H04B7/0408 ,  H04W72/04 ,  H04W16/28 ,  H04B7/08 ,  H04L5/00

Abstract: Wireless communication techniques that include beam training performed to aid mobile devices in identifying beams for use in communications (e.g., uplink communications) are discussed. A mobile device may transmit to a base station an indication of a level of beamforming reciprocity of the mobile device. A base station/gNB may transmit an indication of one or more transmission beams to be used by the mobile device for uplink wireless communication based on the level of beamforming reciprocity. The one or more transmission beams to be used by the mobile device for uplink communication may include a reciprocal transmission beam. A mobile device not capable of full beamforming reciprocity may determine a transmission beam through uplink beam training. A mobile device may transmit to a base station information using at least one of the one or more transmission beams. Other aspects and features are also claimed and discussed.