公开(公告)号：US11082941B2

公开(公告)日：2021-08-03

申请号：US16450325

申请日：2019-06-24

Applicant: QUALCOMM incorporated

Inventor： Navid Abedini ,  Muhammad Nazmul Islam ,  Jianghong Luo ,  Wanshi Chen ,  Tao Luo ,  Junyi Li

IPC: H04W56/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple timing advance offsets that may be used in communications between wireless devices on a wireless communications system. A first timing advance offset may be a fixed offset that has a predetermined value or is selected from a set of available predetermined values, and a second timing advance offset may be adjustable by a wireless device. The second timing advance offset may be used in cases where relatively large distances between wireless devices are present in a system, where certain fixed timing advances are used in addition to or irrespective of a receiving devices propagation delay, where one or more parent nodes have an associated timing reference, or combinations thereof.

公开(公告)号：US11082911B2

公开(公告)日：2021-08-03

申请号：US16235296

申请日：2018-12-28

Applicant: QUALCOMM Incorporated

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

IPC: H04W48/12 ,  H04L5/00 ,  H04W76/15 ,  H04W76/10 ,  H04B7/06 ,  H04L27/26 ,  H04W56/00 ,  H04W74/00 ,  H04W16/28 ,  H04W16/32 ,  H04W72/04 ,  H04W52/04

Abstract: Certain aspects of the present disclosure provide techniques for assisted power control for an uplink signal transmitted during a RACH procedure. A UE may determine a transmit power for transmitting a message during a RACH procedure with a secondary BS, based at least in part, on communication between the UE and a primary BS. The UE may transmit the message to the second BS during the RACH procedure based, at least in part, on the determined transmit power.

公开(公告)号：US11075725B2

公开(公告)日：2021-07-27

申请号：US16522575

申请日：2019-07-25

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04 ,  H04W74/00 ,  H04W72/08 ,  H04W88/08

Abstract: One apparatus may be configured to detect a set of beams from a base station. The apparatus may be further configured to select a beam of the set of beams. The apparatus may be further configured to determine at least one resource based on the selected beam. The apparatus may be further configured to transmit, on the at least one determined resource, a beam adjustment request to the base station. The request may indicate an index associated with the selected beam. Another apparatus may be configured to transmit a first set of beams. The other apparatus may be further configured to receive a beam adjustment request on at least one resource. The other apparatus may be further configured to determine a beam index of a beam in the first set of beams based on the request and the at least one resource.

公开(公告)号：US11071145B2

公开(公告)日：2021-07-20

申请号：US15674214

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

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

IPC: H04J3/06 ,  H04W74/08 ,  H04B7/06 ,  H04L5/00 ,  H04B7/08 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/08 ,  H04W16/28 ,  H04W48/20 ,  H04W88/02 ,  H04W88/08 ,  H04B7/26 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a downlink (DL) signal from a base station on one or more DL beam(s). The UE may identify of a nature of correspondence between one or more receive beams at the UE and one or more transmit beams at the UE. The UE may identify a selected DL beam of the one or more DL beam(s) for communications from the base station to the UE. The UE may transmit a random access channel (RACH) message to the base station using a resource and/or a RACH waveform selected based on the selected DL beam based at least in part on the selected DL beam and the nature of correspondence.

公开(公告)号：US11044072B2

公开(公告)日：2021-06-22

申请号：US15367475

申请日：2016-12-02

Applicant: QUALCOMM Incorporated

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

IPC: H04L7/00 ,  H04W56/00 ,  H04J11/00 ,  H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described. A wireless communications system operating in millimeter wave (mmW) spectrum may utilize synchronization signals for beam tracking. A synchronization signal (e.g., primary synchronization signals (PSS), secondary synchronization signals (SSS), etc.), beam reference signal, and/or control signal may be designed to facilitate beam tracking. A synchronization signal structure based on a repeated sequence in the time domain may facilitate searching for different beams in a timely manner. In some cases, the repeated synchronization signal structure may be achieved by using a larger tone spacing, and hence having shorter symbol duration and repeating the short symbols in the time domain. The repeated structure may be further used to encode additional information (e.g., facilitated by the resulting additional degrees of freedom). Additionally or alternatively, a synchronization signal (e.g., SSS) may be discrete Fourier transform (DFT) pre-coded to achieve better peak-to-average-power-ratio (PAPR).

公开(公告)号：US11039499B2

公开(公告)日：2021-06-15

申请号：US16033013

申请日：2018-07-11

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Ashwin Sampath ,  Sundar Subramanian ,  Juergen Cezanne ,  Sumeeth Nagaraja ,  Jianghong Luo

IPC: H04W56/00 ,  H04W76/28 ,  H04L5/00 ,  H04W52/02 ,  H04B7/06 ,  H04B7/08 ,  H04W72/04 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communication are described for discontinuous reception (DRX) wake up procedures over millimeter wave (mmW) frequency resources. A base station may use multiple antenna ports to transmit one or more beamformed downlink transmissions to a user equipment (UE). The downlink transmissions may include beam-swept reference signals, and the UE may initiate a wake up procedure prior to a configured DRX-On cycle to receive the reference signals. Based on the reception of the reference signals, the UE may train a set of receive beams and determine a preferred downlink transmit beam. The base station may subsequently transmit at least a portion of a cell radio network temporary identifier (C-RNTI) in a beam-swept manner, and the UE may evaluate the C-RNTI transmission on the preferred transmit beam. The UE may also transmit an uplink response indicating the preferred transmit beam to receive downlink data.

公开(公告)号：US11038577B2

公开(公告)日：2021-06-15

申请号：US16281994

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Muhammad Nazmul Islam ,  Makesh Pravin John Wilson ,  Xiao Feng Wang ,  Sumeeth Nagaraja ,  Bilal Sadiq

IPC: H04B7/06 ,  H04W74/08

Abstract: Certain aspects of the present disclosure provide techniques for transmitting a random access channel (RACH) preamble. For example, certain aspects provide a method for wireless communication by a user-equipment (UE). The method generally includes generating a message comprising a random access channel (RACH) preamble, determining an order of a plurality of beams for transmitting the message based on an indication of the order, and transmitting the message, to a network node, via the plurality of beams in accordance with the determined order of the beams.

公开(公告)号：US11032823B2

公开(公告)日：2021-06-08

申请号：US16866489

申请日：2020-05-04

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran ,  Bilal Sadiq ,  Junyi Li

IPC: H04W72/04 ,  H04B7/06 ,  H04L5/00 ,  H04W72/08 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: In a process of beam change, the base station transmits a beam change instruction to a user equipment to confirm a change from a current beam to another beam. The base station determines to change from a first beam to a second beam. The base station generates a beam change instruction to indicate the determination to change from the first beam to the second beam. The base station transmits, to a UE, the beam change instruction in a downlink control information (DCI). The base station determines whether or not the beam change instruction is detected by the UE.

公开(公告)号：US11032044B2

公开(公告)日：2021-06-08

申请号：US16438169

申请日：2019-06-11

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Bilal Sadiq ,  Joseph Binamira Soriaga ,  Muhammad Nazmul Islam ,  Juergen Cezanne ,  Junyi Li

IPC: H04L5/00 ,  H04W24/10

Abstract: Disclosed are techniques for transmitting reference signals (RS) for positioning. A method comprises transmitting or providing an instruction to transmit a first set of RS to a user equipment (UE) in accordance with a first set of RS transmission parameters, receiving a report containing information indicating whether a measurement performed by the UE is limited by a signal-to-noise ratio (SNR) of the first set of RS or a bandwidth of the first set of RS, determining a second set of RS transmission parameters using the received report, wherein the second set of RS transmission parameters is different from the first set of RS transmission parameters, and transmitting a second set of RS to the UE in accordance with the second set of RS transmission parameters, or providing the second set of RS transmission parameters to a base station.

公开(公告)号：US20210168741A1

公开(公告)日：2021-06-03

申请号：US17172971

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Hung Ly ,  Tao Luo ,  Bilal Sadiq ,  Muhammad Nazmul Islam ,  Sundar Subramanian

IPC: H04W56/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described that provide for synchronization signal (SS) blocks in which synchronization signals and broadcast channel transmissions may be transmitted. Broadcast channel transmissions may be demodulated using SS transmissions, reference signal transmissions, or combinations thereof. Broadcast channel transmissions may be transmitted in a subset of SS block time resources, and synchronization signals may be transmitted in another subset of SS block time resources. Reference signals may be transmitted using tones within the broadcast channel time resources, and may be transmitted at a higher density for portions of the broadcast channel transmission bandwidth that are outside of the SS transmission bandwidth. Waveforms for reference signal transmissions, and information provided by reference signal transmissions may be provided.