公开(公告)号：US11627607B2

公开(公告)日：2023-04-11

申请号：US16123677

申请日：2018-09-06

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Hung Dinh Ly ,  Tao Luo ,  Heechoon Lee

IPC: H04L5/00 ,  H04W36/08 ,  H04W74/08 ,  H04W56/00 ,  H04W36/00 ,  H04W88/02 ,  H04W88/08

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may provide information identifying a first time offset between a first time associated with a measurement performed by the user equipment and a second time associated with a measurement gap or a time value of a serving cell of the user equipment, receive information identifying a second time offset between the second time and a third time, wherein the second time offset is based at least in part on the first time offset, and/or transmit a random access message at the third time based at least in part on the second time offset. A scheduling entity may coordinate a random access procedure associated with the random access message based at least in part on the second time offset. Numerous other aspects are provided.

公开(公告)号：US11606158B2

公开(公告)日：2023-03-14

申请号：US15873658

申请日：2018-01-17

Applicant: QUALCOMM incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo

IPC: H04J11/00 ,  H04L5/00 ,  H04W24/10 ,  H04B7/06 ,  H04L25/02 ,  H04W72/04 ,  H04B17/309 ,  H04W36/30

Abstract: Methods, systems, and devices for wireless communication are described for event triggering and reporting with multiple reference signals. A user equipment (UE) may receive event configuration data that specifies at least one permitted combination of reference signals of different types for generating a signal quality comparison and receive a first reference signal and a second reference signal. The UE may generate signal quality comparison data based at least in part on the event configuration data, the first reference signal, and the second reference signal, and transmit a report to a base station that includes the signal quality comparison data.

公开(公告)号：US11546906B2

公开(公告)日：2023-01-03

申请号：US16811239

申请日：2020-03-06

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Xiao Feng Wang ,  Sumeeth Nagaraja

IPC: H04W72/04 ,  H04W16/28 ,  H04B7/06 ,  H04W76/19 ,  H04B7/08 ,  H04L1/18 ,  H04W88/08 ,  H04W88/02 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for switching control beams in multi-link systems using new radio (NR) technology multiple-input multiple-output (MIMO) techniques. A user equipment (UE) may obtain a configuration from a base station (BS) comprising at least one first pattern of beams to monitor when performing a beam recovery procedure, communicate using beamforming, with the BS, via an active transmit and receive beam pair, determine a beam failure of the active transmit and receive beam pair, and monitor the beams according to the first pattern in response to the beam failure.

公开(公告)号：US11510193B2

公开(公告)日：2022-11-22

申请号：US16128355

申请日：2018-09-11

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Xiao Feng Wang ,  Sony Akkarakaran ,  Sumeeth Nagaraja ,  Yan Zhou ,  Shengbo Chen ,  Juan Montojo ,  Wooseok Nam

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/08 ,  H04W56/00 ,  H04B7/0408 ,  H04B7/024 ,  H04B7/08 ,  H04B7/06 ,  H04W72/12 ,  H04W76/15 ,  H04W74/00 ,  H04W24/10

Abstract: Techniques are described herein for beam pair link procedures used in dual connectivity operations. A master base station may be configured to determine a timing window for a user equipment (UE) to monitor a downlink channel associated with a secondary base station. In some cases, the master base station may determine the timing window during a dual connectivity procedure or during a carrier aggregation procedure. The UE may monitor the downlink channel during the timing window and establish a beam pair link with the secondary base station based on the monitoring.

公开(公告)号：US11451982B2

公开(公告)日：2022-09-20

申请号：US16986925

申请日：2020-08-06

Applicant: QUALCOMM Incorporated

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

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：US11382007B2

公开(公告)日：2022-07-05

申请号：US16851856

申请日：2020-04-17

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson ,  Sony Akkarakaran ,  Juan Montojo ,  Shengbo Chen ,  Wooseok Nam ,  Xiao Feng Wang ,  Kaushik Chakraborty

IPC: H04W36/00 ,  H04W74/00 ,  H04W74/08 ,  H04W74/02 ,  H04W36/08 ,  H04W74/04

Abstract: This disclosure generally relates to systems, devices, apparatuses, products, and methods for wireless communication. A communication system may include a user equipment (UE) that receives a configuration for contention-free random access (CFRA) and a configuration for contention-based random access (CBRA). The UE determines a first random access resource. The first random access resource maps to one or more beams from a target base station. The UE determines a beam quality associated with the first random access resource. The UE initiates a random access request using the CFRA when the first random access resource is a contention-free resource, and the beam quality of the first random access resource is above a threshold beam quality. The UE initiates the random access request using the CBRA when the first random access resource is the contention-free resource, and the beam quality of the first random access resource is below the threshold beam quality.

公开(公告)号：US11363663B2

公开(公告)日：2022-06-14

申请号：US15897785

申请日：2018-02-15

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Junyi Li ,  Tao Luo

IPC: H04W76/19 ,  H04W24/08 ,  H04B17/336 ,  H04L5/00 ,  H04B7/08 ,  H04B7/06

Abstract: A base station may transmit, to a user equipment (UE), an indication of parameters (e.g., thresholds) for radio link monitoring (RLM). The UE may monitor active beam pairs in accordance with the indication. In some cases, the UE may configure or may be configured (e.g., by a base station) to transmit reference signals for triggering an RLM operation based on the monitored beam pairs. After triggering, the base station may perform an RLM operation with the UE. Additionally or alternatively, a base station may configure a UE with a beam monitoring configuration that enables uplink beam monitoring. The configuration may indicate one or more active beam pairs for uplink transmissions from the UE, and the base station may perform an RLM operation on the indicated beam pairs. Based on RLM operations (e.g., joint uplink and downlink beam monitoring), beam pairs may be reestablished or newly established.

公开(公告)号：US11337120B2

公开(公告)日：2022-05-17

申请号：US15926436

申请日：2018-03-20

Applicant: QUALCOMM Incorporated

Inventor： Karl Georg Hampel ,  Sumeeth Nagaraja ,  Ravi Agarwal ,  Bilal Sadiq ,  Tao Luo

IPC: H04W36/00 ,  H04W72/04 ,  H04B7/06 ,  H04W36/06 ,  H04W36/36 ,  H04W16/28 ,  H04W36/30

Abstract: Methods, systems, and devices for wireless communication are described for a beam-aware handover procedure for multi-beam access systems. A source base station may determine that a handover request is to be sent to a target base station in preparation for handover of a user equipment (UE) from the source base station to the target base station, and transmit the handover request to the target base station with an indication of whether the handover is to be delayed. Alternatively or in addition to, either the target base station or the source base station may generate and transmit a time expiration indicator. The indication of whether the handover is to be delayed or the time expiration indicator may allow either the target base station or the UE to determine whether access parameters for the UE are valid.

公开(公告)号：US11297519B2

公开(公告)日：2022-04-05

申请号：US15395194

申请日：2016-12-30

Applicant: QUALCOMM Incorporated

Inventor： Keiichi Kubota ,  Sumeeth Nagaraja ,  Tao Luo ,  Gavin Bernard Horn ,  Haitong Sun ,  Ravi Agarwal

IPC: H04W24/10 ,  H04W48/00 ,  H04W36/00 ,  H04W56/00

Abstract: Certain aspects of the present disclosure provide procedures for new radio (NR) cell measurement. According to certain aspects, a method of wireless communication by a user equipment (UE) is provided. The method generally includes receiving one or more downlink signals from a cell, wherein the cell is of a first cell type that supports a first set of functions or a second cell type that supports a second set of functions, wherein the second set of functions is different than the first set of functions; determining a cell type of the cell based on the one or more downlink signals; and communicating with the cell based on the determination.

公开(公告)号：US11277869B2

公开(公告)日：2022-03-15

申请号：US16631402

申请日：2018-07-25

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Muhammad Nazmul Islam ,  Sundar Subramanian ,  Tao Luo ,  Peng Cheng

IPC: H04W74/08 ,  H04W76/19 ,  H04B7/06 ,  H04W16/28 ,  H04W36/08 ,  H04W74/02

Abstract: A user equipment (UE) may initiate a random access (RACH) procedure using an uplink resource selected based on a corresponding received synchronization signal block. The UE may detect a random access procedure trigger. The UE may configure a selection threshold time. The selection threshold time may be based at least in part on a latency requirement of the UE. The UE may select a synchronization signal block having a corresponding uplink resource within the selection threshold time. The synchronization signal block and corresponding uplink resource satisfy one or more parameters or conditions. The UE may transmit a random access preamble on the corresponding uplink resource.