公开(公告)号：US11116006B2

公开(公告)日：2021-09-07

申请号：US15807132

申请日：2017-11-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00 ,  H04W52/14 ,  H04W52/24 ,  H04W52/36 ,  H04L1/00 ,  H04W52/50 ,  H04W74/08 ,  H04W52/48

Abstract: Methods, systems, and devices for wireless communication are described that provide for selecting different uplink transmission parameters for transmission or retransmission of a random access message. A user equipment (UE) may retransmit a random access message to a base station during a random access procedure if an initial transmission of the random access message was unsuccessfully received by the base station. The UE may select a different transmission beam, uplink resource, or transmission power for retransmission of the random access message. The selection may be based on path loss associated with synchronization signals or previous transmissions. The selection may also be based on a maximum number of retransmissions.

公开(公告)号：US11076406B2

公开(公告)日：2021-07-27

申请号：US16027875

申请日：2018-07-05

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/08 ,  H04W88/08 ,  H04W88/02

Abstract: Aspects of the present disclosure relate to receiver beamforming management procedures. According to certain aspects, beams from the set of beams configured at the user equipment (UE) may be not recovered, deleted, removed, and/or merged. A method by a UE includes communicating with a base station using a set of beams. The UE receives signaling, from the base station, indicating one or more beams of the set to be removed from the set and updates the beams in the set based on the signaling.

公开(公告)号：US11005576B2

公开(公告)日：2021-05-11

申请号：US15492888

申请日：2017-04-20

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Andrzej Partyka ,  Sumeeth Nagaraja ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Aitzaz Ahmad

IPC: H04W72/08 ,  H04B15/00 ,  H04W52/02 ,  H04W72/04 ,  H04B17/318 ,  H04L5/00 ,  H04W24/02 ,  H04W24/08 ,  H04L25/02 ,  H04W52/32 ,  H04L1/00

Abstract: An apparatus capable of performing a local operation in a low-interference environment is desired. In an aspect, the apparatus may be a base station. The base station allocates one or more resources for one or more local operations of one or more UEs. The base station determines one or more resource indicators indicating the one or more resources. The base station transmits the one or more resource indicators to the one or more UEs.

公开(公告)号：US20210136613A1

公开(公告)日：2021-05-06

申请号：US17144740

申请日：2021-01-08

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Sumeeth Nagaraja

IPC: H04W24/10 ,  H04L5/00 ,  H04B7/06 ,  H04L29/08 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communication are described. A base station may partition a plurality of carriers into one or more groups. Each carrier within a group may share one or more antenna panels so as to each be directed by a transmit beam in a same direction. The base station may transmit to a user equipment a carrier group indication that identifies the partitioning of the plurality of carriers into the one or more groups and maps a group identifier for at least one of the one or more groups to a beam identifier that identifies the corresponding transmit beam.

公开(公告)号：US20210135804A1

公开(公告)日：2021-05-06

申请号：US17091684

申请日：2020-11-06

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W74/08 ,  H04B7/06 ,  H04B7/08 ,  H04W16/28

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems may support beamformed transmissions between devices (e.g., to improve coverage range). The beamformed transmissions may depend on discovery and maintenance of receive and transmit beams over which a given device may communicate with another device. Various receive and transmit beams for a given device may be compared using reference signals. As the number of devices attempting to access a cell increases, the number of reference signals to be transmitted may scale proportionally. Large numbers of reference signals may flood time-frequency resources of the system and/or require excessive processing at a mobile device. Scrambling sequences for reference signals may be employed to improve efficiency of resource usage. In aspects, the scrambling sequences may be implicitly determined (e.g., based on resources over which the access request was transmitted). Such an implicit association may reduce the need for additional signaling.

公开(公告)号：US20210127428A1

公开(公告)日：2021-04-29

申请号：US17142622

申请日：2021-01-06

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems may support uplink random access channel (RACH) transmissions on multiple beams and over multiple component carriers (CCs). A wireless device may transmit a random access preamble to a base station in a first RACH transmission, which may indicate a set of CCs over which the base station may respond with a random access response (RAR) in a second RACH transmission. The second RACH transmission may then include an indication for which CCs the wireless device may use for a subsequent RACH transmission (e.g., a RACH message 3). The wireless device may also indicate a beam index and/or time-frequency resources associated with beams and/or CCs used for such cell acquisition transmissions. In other examples, the base station may indicate resources (e.g., via a handover command or RACH command) for wireless device scheduling request and/or beam-failure recovery request transmission.

公开(公告)号：US10966181B2

公开(公告)日：2021-03-30

申请号：US16261907

申请日：2019-01-30

Applicant: QUALCOMM Incorporated

Inventor： Valentin Alexandru Gheorghiu ,  Raghu Narayan Challa ,  Tao Luo ,  Sumeeth Nagaraja ,  Ruhua He

IPC: H04B7/0408 ,  H04B7/06 ,  H04B7/08 ,  H04B17/00 ,  H04B17/318 ,  H04B17/345 ,  H04W16/28 ,  H04W24/02 ,  H04W24/08 ,  H04W72/02 ,  H04W72/04 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, wireless devices (e.g., user equipment (UEs) and base stations) may communicate using beamformed transmissions. If a wireless device receives a transmission over multiple receive beams, the device may utilize signal measurements over the beams to determine a signal direction, a type of noise associated with the transmission, or both. The device may determine a signal direction based on received signal strength measurements over at least two receive beams and may select a beam for communication based on the determined signal direction. Additionally or alternatively, the device may compare noise measurements for the signal over at least two receive beams and may determine whether the noise corresponds to interference or white noise. The device may detect the direction of an interferer and may modify reception or demodulation based on the type of noise detected.

公开(公告)号：US10904784B2

公开(公告)日：2021-01-26

申请号：US15457873

申请日：2017-03-13

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Sumeeth Nagaraja

IPC: H04W24/10 ,  H04L5/00 ,  H04B7/06 ,  H04L29/08 ,  H04W16/28 ,  H04L5/14 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may partition a plurality of carriers into one or more groups. Each carrier within a group may share one or more antenna panels so as to each be directed by a transmit beam in a same direction. The base station may transmit to a user equipment a carrier group indication that identifies the partitioning of the plurality of carriers into the one or more groups and maps a group identifier for at least one of the one or more groups to a beam identifier that identifies the corresponding transmit beam.

公开(公告)号：US10812202B2

公开(公告)日：2020-10-20

申请号：US16143799

申请日：2018-09-27

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Muhammad Nazmul Islam ,  Hung Dinh Ly

IPC: H04B17/309 ,  H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04B17/318 ,  H04B17/345

Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify resources associated with a beamformed signal, the identified resources being used by a user equipment (UE) for channel measurements of the beamformed signal, the beamformed signal being one of a plurality of beamformed signals. The base station may generate a signal indicating at least a portion of the identified resources and transmit the signal to the UE. The UE may receive the signal and perform a channel measurement of the beamformed signal using the indicated resources. The UE may transmit, to the base station, a measurement report comprising the channel measurement associated with the beamformed signal.

公开(公告)号：US10805980B2

公开(公告)日：2020-10-13

申请号：US16014689

申请日：2018-06-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/36 ,  H04W16/14 ,  H04W72/04 ,  H04W76/27 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for dynamic reclamation of resources reserved for forward compatibility using communications systems operating according to new radio (NR) technologies. Certain aspects provide a method for wireless communication. The method generally includes identifying resources previously reserved for forward compatibility (FC) that are available for reuse, and providing signaling, to one or more user equipments (UEs), indicating the identified resources are available for reuse.