公开(公告)号：US10750466B2

公开(公告)日：2020-08-18

申请号：US16005739

申请日：2018-06-12

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Muhammad Nazmul Islam ,  Juergen Cezanne ,  Chinmay Vaze ,  Raghu Narayan Challa ,  Alexei Yurievitch Gorokhov

IPC: H04W56/00 ,  H04W72/04 ,  H04L5/00 ,  H04W4/70

Abstract: According to certain aspects of the present disclosure, indicating which neighbor cells are synchronous or asynchronous with a serving cell may allow a UE to determine whether it can derive neighbor cell RS timing based on the serving cell timing.

公开(公告)号：US10681725B2

公开(公告)日：2020-06-09

申请号：US16004179

申请日：2018-06-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W48/14 ,  H04W4/06 ,  H04W24/08 ,  H04W48/12 ,  H04W84/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine that a signal characteristic of a unicast signal is better than a signal characteristic of a broadcast signal; and/or transmit, based at least in part on the determination, a request for an update to a master information block or a minimum system information block to be provided to the user equipment using the unicast signal. In some aspects, a base station may determine that a signal characteristic of a unicast signal associated with a user equipment (UE) is better than a signal characteristic of a broadcast signal broadcasted by the base station; and/or transmit, based on the determination, an update to a master information block (MIB) or a minimum system information block (MSIB) to the UE using the unicast signal. Numerous other aspects are provided.

公开(公告)号：US10575307B2

公开(公告)日：2020-02-25

申请号：US15787528

申请日：2017-10-18

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Kaushik Chakraborty

IPC: H04W72/04 ,  H04W36/00 ,  H04W72/08

Abstract: In multi-beam operation, path losses or other aspects of electromagnetic signal propagation, may make it necessary to restrict certain beam directions used between two devices. A base station determines a restricted-beam set including at least one beam direction that is restricted for at least one of a signal transmission or a signal reception. The base station also restricts at least one of a transmission or a reception of a signal based on the restricted-beam set. Additionally, the base station determines an updated restricted-beam set including at least one beam direction that is restricted for at least one of transmission or reception of an electromagnetic signal. The base station also updates the restricted-beam set by adding or removing at least one beam direction to the restricted set corresponding to at least one of signal transmission or signal reception.

公开(公告)号：US10574329B2

公开(公告)日：2020-02-25

申请号：US16047842

申请日：2018-07-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/19 ,  H04B7/08 ,  H04B17/17 ,  H04B17/309 ,  H04B7/06 ,  H04B7/0417 ,  H04W24/08 ,  H04W72/04

Abstract: In an aspect, a scheduled entity obtains a first set of indications associated with a beam failure recovery procedure, starts at least one of a first timer or a second timer based on the obtained first set of indications, and detects a radio link failure when the first timer expires or when the second timer expires. In some aspects, the scheduled entity starts at least one of the first timer or the second timer when N out-of-sync indications are obtained over a network configured time window, the N out-of-sync indications including aperiodic out-of-sync indications from the first set of indications and out-of-sync indications associated with a radio link monitoring procedure. In some aspects, the scheduled entity starts at least the second timer when the first set of indications includes a single aperiodic out-of-sync indication.

公开(公告)号：US20200045732A1

公开(公告)日：2020-02-06

申请号：US16654987

申请日：2019-10-16

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Junyi Li ,  Tao Luo ,  Sumeeth Nagaraja

IPC: H04W74/00 ,  H04W72/12 ,  H04B7/08 ,  H04W74/08 ,  H04W52/50 ,  H04W52/32 ,  H04W52/24 ,  H04B7/06 ,  H04W52/14

Abstract: Methods, systems, and devices for wireless communication are described for selecting different uplink transmission parameters for transmission or retransmission of a random access message. A user equipment (UE) may transmit or retransmit a random access message such as a layer 2 or layer 3 (L2/L3) message to a base station during a random access procedure. The UE may select a transmission beam, uplink resource or transmission power for the transmission of the L2/L3 message that differ from those used for transmission of a previous 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：US10523281B2

公开(公告)日：2019-12-31

申请号：US15377897

申请日：2016-12-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04B7/0408 ,  H04B17/318 ,  H04B7/06 ,  H04W88/02 ,  H04W88/08

Abstract: Some aspects of the present disclosure provide systems and methods for utilizing information from inbuilt sensors of a wireless apparatus along with radio frequency (RF) measurements to assist and/or trigger a beam tracking operation. Some aspects of the present disclosure provide systems and methods for utilizing information available from inbuilt sensors of a wireless apparatus and RF measurements along with historical mobility information to assist a mobility operation such as an initial beam search, a neighbor beam search, and handovers.

公开(公告)号：US10517002B2

公开(公告)日：2019-12-24

申请号：US16037881

申请日：2018-07-17

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Makesh Pravin John Wilson ,  Sony Akkarakaran ,  Juan Montojo ,  Shengbo Chen ,  Keiichi Kubota

IPC: H04W24/02 ,  H04W36/16

Abstract: Certain aspects of the present disclosure provide techniques for identifying a mismatch between a user's common search space (CSS) and user-specific search space (USS). A base station (BS) may receive an indication that a user equipment (UE) decoded at least one beamformed signal transmitted by the BS in a USS and did not decode at least one beamformed signal transmitted by the BS in a CSS. The BS may take one or more actions based, at least in part, on the indication. Similarly, a UE may decode at least one beamformed signal transmitted by a BS in a USS, transmit to the BS an indication that the UE decoded the at least one beamformed signal transmitted in the USS and did not decode at least one beamformed signal transmitted by the BS in a CSS, and take one or more actions based, at least in part, on the indication.

公开(公告)号：US10484102B2

公开(公告)日：2019-11-19

申请号：US15492982

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

Abstract: An apparatus capable of self-calibration in a low-interference environment is desired. In an aspect, the apparatus may be a user equipment (UE) or a neighboring base station. The device receives, from a base station, a self-calibration notification indicating one or more resources allocated for a self-calibration of the base station. The device performs, in response to the self-calibration notification, at least one of deactivating at least one component of the device based on the one or more allocated resources or adjusting utilization of the one or more allocated resources allocated for the self-calibration of the base station.

公开(公告)号：US10396959B2

公开(公告)日：2019-08-27

申请号：US15713074

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Ashwin Sampath ,  Sumeeth Nagaraja ,  Sundar Subramanian ,  Juergen Cezanne ,  Sony Akkarakaran

IPC: H04L5/00 ,  H04B7/0408 ,  H04B7/06 ,  H04L1/00 ,  H04W16/28 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for signaling information regarding beams used for data and control transmissions to a receiving entity.

公开(公告)号：US20190246301A1

公开(公告)日：2019-08-08

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: H04W24/08 ,  H04W72/08 ,  H04B7/06 ,  G06F15/173

CPC classification number: H04W24/08 ,  G06F15/17331 ,  G06F16/9017 ,  H04B7/0617 ,  H04B7/088 ,  H04W72/082

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.