公开(公告)号：US10834733B2

公开(公告)日：2020-11-10

申请号：US15874575

申请日：2018-01-18

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/08 ,  H04L5/00 ,  H04W72/00 ,  H04B7/0408 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/08 ,  H04W56/00

Abstract: Aspects of the present disclosure provide a method, a computer-readable medium, and an apparatus for wireless communication, for example for reference signal measurements. An example method, performed by a user equipment, generally includes determining a duration for reference signal measurements of a network entity and beamforming one or more radio frequency chains in one or more directions for the reference signal measurements of the network entity during the duration.

公开(公告)号：US10764021B2

公开(公告)日：2020-09-01

申请号：US15710731

申请日：2017-09-20

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Xiao feng Wang ,  Alberto Rico Alvarino ,  Hao Xu

IPC: H04L5/14 ,  H04W72/12 ,  H04L5/00 ,  H04B7/26 ,  H04L5/22 ,  H04W72/04 ,  H04L27/26 ,  H04L1/08 ,  H04L25/02 ,  H04L1/00 ,  H04W74/08 ,  H04L5/26

Abstract: There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In a further aspect, the apparatus may receive information associated with a narrowband TDD frame structure having a first contiguous uplink transmission duration. The apparatus may transmit a first portion of an uplink transmission comprising a first number of slots in the first contiguous uplink transmission duration. In certain aspects, the uplink transmission may have a duration longer than the first contiguous uplink transmission duration.

公开(公告)号：US10667244B2

公开(公告)日：2020-05-26

申请号：US15726229

申请日：2017-10-05

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Jing Sun ,  Sony Akkarakaran ,  Tamer Kadous ,  Xiao feng Wang ,  Akula Reddy

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0452 ,  H04B7/00 ,  H04L1/18

Abstract: When a base station is capable of using multiple different types of waveforms for a downlink communication to a UE, the UE may waste processing resources attempting to receive and/or process the downlink communication. For example, the UE may cycle through various possible types of waveforms in an attempt to process the downlink communication. Techniques described herein use waveform signaling for downlink communications to notify the UE of a type of waveform being used for a downlink communication, thereby conserving UE resources (e.g., processing resources, memory resources, RF resources, and/or the like) that would otherwise be wasted attempting to process the downlink communication using multiple types of waveforms.

公开(公告)号：US10511399B2

公开(公告)日：2019-12-17

申请号：US15873441

申请日：2018-01-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Tamer Kadous ,  Juan Montojo ,  Xiao feng Wang ,  Sony Akkarakaran

IPC: H04J11/00 ,  H04W48/12 ,  H04L5/00 ,  H04W72/12

Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.

公开(公告)号：US10484945B2

公开(公告)日：2019-11-19

申请号：US15843948

申请日：2017-12-15

Applicant: QUALCOMM Incorporated

Inventor： Prashanth Akula ,  Alberto Rico Alvarino ,  Hao Xu ,  Xiao feng Wang ,  Umesh Phuyal ,  Kapil Bhattad ,  Wanshi Chen ,  Peter Gaal ,  Mungal Singh Dhanda

IPC: H04B1/38 ,  H04W52/02 ,  H04L5/16

Abstract: Some aspects described herein reduce the negative performance impact associated with the voltage droop of a user equipment (UE) battery. For example, aspects described herein may be used to configure a UE with a pattern that includes a battery recovery time period that prevents a battery voltage of the UE from falling below a critical threshold and/or reduces the likelihood of the battery voltage falling below the critical threshold. In this way, UE performance may be improved, battery performance may be improved, battery life may be extended, and/or the like.

公开(公告)号：US10469159B2

公开(公告)日：2019-11-05

申请号：US15706966

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Arvind Sridharan ,  Kapil Bhattad ,  Manikandan Chandrasekar ,  Gowrisankar Somichetty ,  Alberto Rico Alvarino ,  Xiao feng Wang

IPC: H04B7/26 ,  H04J3/06 ,  H04L5/14 ,  H04L5/02 ,  H04L5/24 ,  H04W72/04 ,  H04L5/00 ,  H04W4/70 ,  H04L1/04 ,  H04W56/00

Abstract: There is a need to support narrowband TDD frame structure for narrowband communications. The present disclosure provides a solution by supporting one or more narrowband TDD frame structure(s) for narrowband communications. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may determine a TDD mode for narrowband communications. The apparatus may determine a TDD frame structure for the narrowband communications from a group of narrowband TDD frame structures. In one aspect, at least one common subframe in each narrowband TDD frame structure in the group of narrowband TDD frame structures may be configured as a downlink subframe. The apparatus may transmit a PSS using the at least one common subframe in the narrowband TDD frame structure determined for the narrowband communications.

公开(公告)号：US10454755B2

公开(公告)日：2019-10-22

申请号：US15887656

申请日：2018-02-02

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/24 ,  H04W72/04 ,  H04B7/00 ,  H04B7/06 ,  H04W88/02 ,  H04W24/10 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described that support beam failure identification and recovery is systems that may use beamforming for uplink and downlink transmission beams. A first beam and a second beam may be configured, and the second beam may be used to identify a failure of the first beam. Upon detection of a beam failure, a beam recovery procedure may be initiated in which an indication of a beam failure may be transmitted using scheduling request (SR) or uplink control channel resource. A base station in some examples may transmit an indication that one of a set of beams may have failed, and a UE may provide an indication of which beam of the set of beams failed, such as based on a received reference signal associated with one of the beams.

公开(公告)号：US20190124626A1

公开(公告)日：2019-04-25

申请号：US15793580

申请日：2017-10-25

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Hao Xu ,  Alberto Rico Alvarino ,  Xiao feng Wang ,  Peter Gaal

IPC: H04W72/04 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may identify a payload size, associated with performing a search for a physical downlink control channel (PDCCH), wherein the payload size is identified based at least in part on an aggregation level, associated with performing the search for the PDCCH, or an offset associated with performing the search for the PDCCH; and perform the search for the PDCCH based at least in part on the payload size. Numerous other aspects are provided.

公开(公告)号：US20180343612A1

公开(公告)日：2018-11-29

申请号：US15843948

申请日：2017-12-15

Applicant: QUALCOMM Incorporated

Inventor： Prashanth AKULA ,  Alberto Rico Alvarino ,  Hao Xu ,  Xiao feng Wang ,  Umesh Phuyal ,  Kapil Bhattad ,  Wanshi Chen ,  Peter Gaal ,  Mungal Singh Dhanda

IPC: H04W52/02

CPC classification number: H04W52/0212 ,  H04L5/16

Abstract: Some aspects described herein reduce the negative performance impact associated with the voltage droop of a user equipment (UE) battery. For example, aspects described herein may be used to configure a UE with a pattern that includes a battery recovery time period that prevents a battery voltage of the UE from falling below a critical threshold and/or reduces the likelihood of the battery voltage falling below the critical threshold. In this way, UE performance may be improved, battery performance may be improved, battery life may be extended, and/or the like.

公开(公告)号：US20180220426A1

公开(公告)日：2018-08-02

申请号：US15661860

申请日：2017-07-27

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Kapil Bhattad ,  Xiao feng Wang ,  Juan Montojo ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/04

CPC classification number: H04W72/0466 ,  H04J11/005 ,  H04L1/08 ,  H04W72/042

Abstract: A base station (BS) may transmit, and a user equipment (UE) may receive, a physical broadcast channel, such as a narrowband physical broadcast channel (NB-PBCH). In an interference-limited scenario with synchronous cells in a network, repetitions of a symbol being transmitted for a first physical broadcast channel of a first cell may collide with repetitions of a symbol being transmitted for a second physical broadcast channel of a second cell. This may result in the UE being unable to recover symbols of a physical broadcast channel. In some aspects, the BS may transmit, and the UE may receive, a physical broadcast channel including bits processed using a first processing stage, such as using first scrambling sequences, and a second processing stage, such as using second scrambling sequences, to compensate for the interference, thereby ensuring that the UE can recover the symbols of the physical broadcast channel.