公开(公告)号：US20200229238A1

公开(公告)日：2020-07-16

申请号：US16736782

申请日：2020-01-07

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Sony Akkarakaran ,  Tao Luo ,  Jing Sun

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W72/14 ,  H04L1/18 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use information received as part of a two-step random access channel (RACH) procedure to indicate that the two-step RACH procedure has been completed. For example, a UE may perform a two-step RACH procedure that includes the UE transmitting a first message to a base station and, in response, receiving a second message from a base station. The second message may include feedback information the UE uses to signal that the RACH procedure has been completed. In some examples, the feedback information may indicate a physical channel or grant, or both, and a third message may be transmitted by the UE based on the feedback information included in the second message. As such, the third message may serve as an indication that the second message was received, and the UE completed the RACH procedure.

公开(公告)号：US10687335B2

公开(公告)日：2020-06-16

申请号：US15400446

申请日：2017-01-06

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sony Akkarakaran ,  Bilal Sadiq ,  Junyi Li

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/04 ,  H04L5/00 ,  H04W72/08 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: In a process of beam change, the base station transmits a beam change instruction to a user equipment to confirm a change from a current beam to another beam. The base station determines to change from a first beam to a second beam. The base station generates a beam change instruction to indicate the determination to change from the first beam to the second beam. The base station transmits, to a UE, the beam change instruction in a downlink control information (DCI). The base station determines whether or not the beam change instruction is detected by the UE.

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：US10660056B2

公开(公告)日：2020-05-19

申请号：US16114451

申请日：2018-08-28

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Peter Gaal ,  Xiao Feng Wang ,  Yi Huang ,  Tao Luo ,  Juan Montojo ,  Renqiu Wang ,  Seyong Park

IPC: H04L12/28 ,  H04W56/00 ,  H04L27/26 ,  H04L25/03 ,  H04W76/27 ,  H04L5/00 ,  H04W72/04 ,  H04J1/16

Abstract: Various aspects described herein relate to techniques for timing control with filtering in orthogonal frequency division multiplexing (OFDM)-based wireless communications systems. In an aspect, the method includes determining whether time-domain filtering or frequency-domain filtering is used for a transmission signal waveform, and identifying a time delay based on a determination that the time-domain filtering is used for the transmission signal waveform. The method further includes applying a timing correction based on the identified time delay. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.

公开(公告)号：US10588047B2

公开(公告)日：2020-03-10

申请号：US15941682

申请日：2018-03-30

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo

IPC: H04W28/02 ,  H04W92/10 ,  H04W76/27 ,  H04W72/12 ,  H04W72/04 ,  H04W24/10 ,  H04W8/24 ,  H04L5/00

Abstract: The present disclosure generally relates to a methods, apparatus, and computer readable medium for implementing the methods for transmitting multi-bit SR (SRs) from a user equipment (UE). The UE may receive, from a base station, a radio resource control (RRC) message. The RRC message may indicate that uplink component carriers (CCs) of the UE are to be assigned to a plurality of uplink CC groups. Upon receipt of the RRC, the UE may assign the uplink CCs to the plurality of uplink CC groups. A multi-bit SR may be generated for each group of the plurality of uplink CC groups. The UE may transmit the multi-bit SR generated for each group of the plurality of uplink CC groups to the base station. Multi-bit SR transmission across different CCs may reduce latency in uplink grant and improve data transmission time.

公开(公告)号：US10524233B2

公开(公告)日：2019-12-31

申请号：US15693197

申请日：2017-08-31

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Seyong Park ,  Tao Luo ,  Wei Zeng ,  Hao Xu ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L27/26 ,  H04B7/26

Abstract: Some techniques and apparatuses described herein may assign resource elements of a particular resource block for transmission by two or more different antennas in a fashion such that the symbols are interleaved in frequency and/or in time, which improves frequency diversity of the two or more different antennas, thereby improving uplink performance of the UE. In some aspects, when the two or more resource blocks are contiguous, then each antenna may produce an interleaved frequency division multiple access (IFDMA) waveform, which may maintain peak to average power ratio (PAPR) properties of a single channel FDMA transmission. Thus, some techniques and apparatuses described herein may achieve transmit diversity and/or frequency diversity of a stream of symbols on two or more antennas without significantly increasing the PAPR of the stream of symbols.

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：US20190313440A1

公开(公告)日：2019-10-10

申请号：US16373923

申请日：2019-04-03

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Yan Zhou ,  Hung Dinh Ly

IPC: H04W72/14 ,  H04W72/04 ,  H04W72/12 ,  H04L27/26 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to monitor, via a receive beam, a first transmission time interval (TTI) of a plurality of different TTIs for a control resource set. The UE may decode the control resource set to obtain a first grant and a second grant. Upon decoding the control resource set, the UE may determine that the first grant and the second grant are associated with different parameters. In some cases, the parameters may be spatial quasi-colocation (QCL) assumptions mapped to the control resource set. The UE may decode, resources of a shared data channel indicated in at least one of the first grant and the second grant. In some cases, the UE may decode the resources during at least one of the first TTI and a second TTI of the plurality different TTIs.