公开(公告)号：US20200177251A1

公开(公告)日：2020-06-04

申请号：US16784091

申请日：2020-02-06

Applicant: QUALCOMM INCORPORATED

Inventor： Vasanthan Raghavan ,  Junyi Li

IPC: H04B7/06 ,  H04B7/08 ,  H04B17/382 ,  H04B17/327 ,  H04B17/336

Abstract: Techniques are described herein for a beam refinement procedure between a first communications device (e.g., base station) and a second communications device (e.g., user equipment (UE)) that uses long-term feedback information from the second communications device to maintain a beam pair link established for a downlink connection. The second communications device may transmit long-term feedback information to the first communications device in response to a request or a trigger event occurring. The long-term feedback information may be sensor information measured by the second communications device or uplink training symbols. The first communications device may localize a beam search of the beam refinement procedure using the long-term feedback information. The localized beam search may be an example of a device-specific search. The first communications device may also generate a long-term map of channel conditions based on the long-term feedback data. The long-term map may also be used to localize the search.

公开(公告)号：US10608723B2

公开(公告)日：2020-03-31

申请号：US16241641

申请日：2019-01-07

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Junyi Li

IPC: H04B7/06 ,  H04B7/08 ,  H04B17/382 ,  H04B17/327 ,  H04B17/336

Abstract: Techniques are described herein for a beam refinement procedure between a first communications device (e.g., base station) and a second communications device (e.g., user equipment (UE)) that uses long-term feedback information from the second communications device to maintain a beam pair link established for a downlink connection. The second communications device may transmit long-term feedback information to the first communications device in response to a request or a trigger event occurring. The long-term feedback information may be sensor information measured by the second communications device or uplink training symbols. The first communications device may localize a beam search of the beam refinement procedure using the long-term feedback information. The localized beam search may be an example of a device-specific search. The first communications device may also generate a long-term map of channel conditions based on the long-term feedback data. The long-term map may also be used to localize the search.

公开(公告)号：US10601488B2

公开(公告)日：2020-03-24

申请号：US16220774

申请日：2018-12-14

Applicant: QUALCOMM Incorporated

Inventor： Jung Ho Ryu ,  Vasanthan Raghavan ,  Junyi Li

IPC: H04B7/06 ,  G06K9/00 ,  G06T7/246 ,  H04W72/04 ,  H04W16/28 ,  H04W64/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine a location of an object relative to the wireless communication device, wherein the location is determined based at least in part on a result of processing one or more images that include the object. The wireless communication device may configure at least one of a beam or a beam scan characteristic used to identify the beam to be used by the wireless communication device based at least in part on the location of the object relative to the wireless communication device. The wireless communication device may communicate using the beam. Numerous other aspects are provided.

公开(公告)号：US10536209B2

公开(公告)日：2020-01-14

申请号：US15915755

申请日：2018-03-08

Applicant: QUALCOMM Incorporated

Inventor： Juergen Cezanne ,  Tianyang Bai ,  Sundar Subramanian ,  Vasanthan Raghavan ,  Ashwin Sampath

IPC: H04B7/06 ,  H04B7/0426

Abstract: Various aspects described herein relate to techniques for beam discovery and beamforming in wireless communications (e.g., 5th Generation (5G) New Radio (NR)). In an aspect, a method related to signaling for channel state information reference signals (CSI-RSs) in wireless communications is provided. The method includes receiving, by a user equipment (UE), a CSI-RS beam of a set of CSI-RS beams, and the CSI-RS beam includes a change indication message. The method further includes determining, by the UE, whether the set of CSI-RS beams have changed based on a value of the change indication message.

公开(公告)号：US10484033B1

公开(公告)日：2019-11-19

申请号：US16054766

申请日：2018-08-03

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Vasanthan Raghavan ,  Juergen Cezanne ,  Ozge Koymen

IPC: H04B1/3827 ,  G08B7/06 ,  G08B21/18 ,  H04B17/10 ,  G09B19/24

Abstract: Wireless communications systems and methods related to providing user interfaces to inform a user of an antenna signal blockage at a wireless communication device are provided. A wireless communication device receives information associated with at least one antenna of the wireless communication device indicating that a signal path of the at least one antenna is at least partially blocked by an object. The wireless communication device outputs, via a user interface of the wireless communication device, an indication that the signal path of the at least one antenna is at least partially blocked.

公开(公告)号：US20190335477A1

公开(公告)日：2019-10-31

申请号：US16394959

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Vasanthan Raghavan ,  Juergen Cezanne ,  Junyi Li ,  Muhammad Nazmul Islam

IPC: H04W72/08 ,  H04W72/02 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple different receive beams at a user equipment (UE) that may be spatially associated with a single transmission beam from a base station. A UE may measure, using multiple different receive beams, multiple instances of a same reference signal transmitted by the base station using a same transmission beam. The UE may provide measurement reports associated with each of the measurements to the base station. A particular receive beam to be used for a downlink transmission may be selected from the multiple receive beams and may be indicated to the UE.

公开(公告)号：US10455539B2

公开(公告)日：2019-10-22

申请号：US15701285

申请日：2017-09-11

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Assaf Touboul ,  Junyi Li ,  Udara Fernando

IPC: H04W64/00 ,  H04W16/28 ,  H04W36/32 ,  H04B7/026 ,  H04B7/06 ,  H04W74/00 ,  H04B7/0408 ,  H04B7/0452 ,  H04B7/0456 ,  H04B7/08 ,  H04W4/02 ,  H04W4/50 ,  H04L25/03 ,  H04W16/14 ,  H04W36/00

Abstract: Aspects described herein may enable a network entity to create an mmW cell geometry and/or to seed a base station codebook and a UE codebook to improve a beamforming procedure while maintaining peak performance gain that is provided by scanning narrower beams. The network entity may provide information associated with the base station codebook and the UE codebook to the base station. The network entity may also provide, to the base station, a subframe structure to be used during a beamforming procedure that is based on the base station codebook and the UE codebook. The base station and the UE may perform the beamforming procedure based in the subframe structure using beam orientations indicated in the base station codebook and the UE codebook. From the beamforming procedure, the base station and the UE may determine an access beam to be used in communication between the base station and the UE.

公开(公告)号：US10425144B2

公开(公告)日：2019-09-24

申请号：US15711777

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Sundar Subramanian ,  Juergen Cezanne ,  Ashwin Sampath ,  Junyi Li

IPC: H04L1/00 ,  H04B7/08 ,  H04B7/06 ,  H04W24/10 ,  H04B7/0408 ,  H04W72/04 ,  H04W72/08

Abstract: Certain aspects of the present disclosure provide various appropriate frame structures, sweep sequences, and procedures that may assist in beam sweeping, tracking and recovery.

公开(公告)号：US10404343B2

公开(公告)日：2019-09-03

申请号：US15618815

申请日：2017-06-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  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 set of reference symbols to a user equipment (UE). Each set of reference symbols may include two (or more) beamformed signals. The network device may receive, based on the set of reference symbols, a measurement report from the UE. The measurement report may include a co-phasing indicator associated with the set of reference symbols. The network device may identify, based at least in part on the measurement report, an antenna port precoder configuration to use for communicating with the UE.

公开(公告)号：US20190159102A1

公开(公告)日：2019-05-23

申请号：US16189457

申请日：2018-11-13

Applicant: QUALCOMM Incorporated

Inventor： Jung Ho Ryu ,  Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Jianghong Luo ,  Juergen Cezanne ,  Vasanthan Raghavan

IPC: H04W36/32 ,  H04W36/00 ,  H04W74/08 ,  H04W36/36 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may initiate handover from one base station to another. The handover procedure may not include random access channel (RACH) transmissions, and thus may be a localized RACH-less handover. The UE may initiate handover to a new base station based on the relative location of the UE and the new base station, some predetermined time, or based on the characteristics of the signals from each base station.