公开(公告)号：US11202272B2

公开(公告)日：2021-12-14

申请号：US16192363

申请日：2018-11-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04L5/00 ,  H04W48/16 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for adjusting communication timings of beams (e.g., of beam pair links) within a beam timing advance group (TAG). In some cases, a base station may determine that transmission timing at a UE may be misaligned between multiple beams. The base station may configure a set of beams into a beam TAG, and may send a timing advance (TA) command for the beam TAG. A common timing reference value may be identified based on the TA command. UEs performing uplink transmissions may determine a TA value for the beam TAG based on the common timing reference value, and may adjust a communication timing for one or more of the beams within the beam TAG based at least in part on the common timing reference value and the timing advance value.

公开(公告)号：US11184933B2

公开(公告)日：2021-11-23

申请号：US16859863

申请日：2020-04-27

Applicant: QUALCOMM Incorporated

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

IPC: 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 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 scheduling request message to the base station using at least one of a resource or a waveform selected based at least in part on the selected DL beam.

公开(公告)号：US11178646B2

公开(公告)日：2021-11-16

申请号：US15468698

申请日：2017-03-24

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/0417 ,  H04L5/00 ,  H04L25/02 ,  H04W72/02 ,  H04B17/336 ,  H04W16/28 ,  H04W74/08 ,  H04B7/0408

Abstract: When beamforming (e.g., via a millimeter wave system (mmW)) is used for wireless communication, a base station may transmit beams that are directed to certain directions. Due to the directional nature of the beams in the mmW system, an approach to determine a beam that provides a desirable gain is studied. The apparatus may be a user equipment (UE). The apparatus receives, from a base station, a plurality of signals through a plurality of beams of the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station. The apparatus receives from the base station a number of beams whose information should be fed back to the base station. The apparatus performs channel estimation for each beam of the plurality of beams from the plurality of antenna ports based on the plurality of signals.

公开(公告)号：US11160030B2

公开(公告)日：2021-10-26

申请号：US16178527

申请日：2018-11-01

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Xiao Feng Wang ,  Bilal Sadiq ,  Sundar Subramanian ,  Muhammad Nazmul Islam

IPC: H04W24/10 ,  H04W52/42 ,  H04W52/14 ,  H04W52/36 ,  H04W88/02

Abstract: Techniques are provided for power control in directional beam environments. A user equipment (UE) may determine one or more power parameters on a beam-by-beam basis. Each directional uplink transmission beam in a communication link between the UE and the base station may be independently controlled using these beam-specific power parameters. Examples of these beam-specific power parameters may include a maximum output power for a given directional uplink transmission beam and a difference between the maximum output power for the given directional uplink transmission beam and an estimated transmit power for the given directional uplink transmission beam. The UE may report one or more of these beam-specific power parameters to a base station using a beam-specific report.

公开(公告)号：US20210306037A1

公开(公告)日：2021-09-30

申请号：US16488235

申请日：2018-04-04

Applicant: Makesh Pravin JOHN WILSON ,  June NAMGOONG ,  Yu ZHANG ,  Alexandros MANOLAKOS ,  Jing SUN ,  Tao LUO ,  Bilal SADIQ ,  Qualcomm Incorporated

Inventor： Makesh Pravin John Wilson ,  June Namgoong ,  Yu Zhang ,  Alexandros Manolakos ,  Jing Sun ,  Tao Luo ,  Bilal Sadiq

IPC: H04B7/0452 ,  H04W72/04 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communication are described. In multi-user (MU) multiple-input multiple-output (MIMO) wireless communications systems, a base station may perform signaling to indicate information related to ports assigned to one or more UEs. The base station may also signal information regarding ports shared with other UEs, which the UE may use when performing channel estimation. In some examples, the base station may signal a number of ports used per sub-band to the UE or a number of demodulation reference signal (DMRS) ports used by the UE. The base station may signal a sub-set of a total number of ports that are shared by other UEs overlapping with the resource allocation of the UE. The signaling may indicate a number of combs used by the base station in the resource allocation for the UE.

公开(公告)号：US11115096B2

公开(公告)日：2021-09-07

申请号：US16910534

申请日：2020-06-24

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Ashwin Sampath ,  Sundar Subramanian ,  Junyi Li ,  Vasanthan Raghavan

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04 ,  H04B7/0456 ,  H04W16/28 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.

公开(公告)号：US11101869B2

公开(公告)日：2021-08-24

申请号：US16218377

申请日：2018-12-12

Applicant: QUALCOMM Incorporated

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

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

Abstract: A UE may receive a beam modification command that indicates a set of transmit beam indexes corresponding to a set of transmit beams of a base station, and each transmit beam index of the set of transmit beam indexes may indicate at least a transmit direction for transmitting a transmit beam by the base station. The UE may determine a set of receive beam indexes corresponding to receive beams of the UE based on the set of transmit beam indexes, and each receive beam index of the set of receive beam indexes may indicate at least a receive direction for receiving a receive beam by the UE. The UE may receive, from the base station, a signal through at least one receive beam corresponding to at least one receive beam index included in the set of receive beam indexes.

公开(公告)号：US11026261B2

公开(公告)日：2021-06-01

申请号：US15674264

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

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

IPC: 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 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 scheduling request message to the base station using at least one of a resource or a waveform selected based at least in part on the selected DL beam.

公开(公告)号：US11019665B2

公开(公告)日：2021-05-25

申请号：US16175811

申请日：2018-10-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Wanshi Chen ,  Bilal Sadiq ,  Makesh Pravin John Wilson ,  Junyi Li

IPC: H04W74/08 ,  H04B7/0408 ,  H04L1/00 ,  H04L27/26 ,  H04W74/00

Abstract: Methods, systems, and devices for multiple random access channel (RACH) message 1 (Msg1) transmission for physical downlink control channel (PDCCH) ordered RACH are described. A user equipment (UE) may perform the multiple Msg1 transmission as part of a CFRA or CBRA procedure for access. The UE may perform the multiple Msg1 transmissions in a cyclic consecutive manner during configured RACH occasions or according to explicit time and frequency indications of a random access response (RAR) window. Based on the multiple Msg1 transmission procedure, the UE may reduce latency for random access procedure on the RACH and improve signaling throughput. In some cases, the UE may support beam correspondence and may perform multiple Msg1 transmissions to enhance multi-beam diversity during RACH transmission by performing transmission corresponding to RACH occasions mapped to different synchronization signal blocks (SSBs).

公开(公告)号：US11018742B2

公开(公告)日：2021-05-25

申请号：US16274774

申请日：2019-02-13

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Bilal Sadiq ,  Xiao Feng Wang ,  Yan Zhou

IPC: H04B7/06 ,  H04W76/11 ,  H04B7/0456 ,  H04L5/00 ,  H04W72/10 ,  H04B7/0404 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for identification of beamforming parameters for a downlink transmission beam based at least in part on a set of rules that define a priority order for control transmission and data transmissions. Downlink resources may be allocated to a user equipment (UE) for a downlink transmission via a first set of downlink beamforming parameters, and the UE may also be configured to monitor a control resource set using a different set of downlink beamforming parameters within a same transmission time interval (TTI) as the downlink transmission. A UE and a base station may identify which beamforming parameters to use for the downlink transmission based on the priority order. The set of rules may define which set of downlink beamforming parameters are to be used, whether the downlink transmission is rate-matched around the control resource set, or combinations thereof.