公开(公告)号：US20160212719A1

公开(公告)日：2016-07-21

申请号：US14600481

申请日：2015-01-20

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Soumya Das ,  Olufunmilola Awoniyi-Oteri ,  Nitinkumar Sagarbhai Barot

IPC: H04W56/00

CPC classification number: H04W56/0005 ,  H04W88/06

Abstract: A user equipment may identify one or more trigger factors associated with an assistance mode. The assistance mode may include a second radio associated with a second radio access technology (RAT) assisting a first radio associated with a first RAT. The UE may then measure a frequency offset between a first clock of the first radio and a second clock of the second radio based at least in part on the one or more trigger factors. The first clock may be associated with a first oscillator crystal, and the second clock may be associated with a second oscillator crystal. The UE may then store the frequency offset for use by the first radio and the second radio in the assistance mode.

Abstract translation: 用户设备可以识别与辅助模式相关联的一个或多个触发因素。 辅助模式可以包括与辅助与第一RAT相关联的第一无线电的第二无线电接入技术（RAT）相关联的第二无线电。 然后，UE可以至少部分地基于一个或多个触发因素来测量第一无线电的第一时钟和第二无线电的第二时钟之间的频率偏移。 第一时钟可以与第一振荡器晶体相关联，并且第二时钟可以与第二振荡器晶体相关联。 然后，UE可以在辅助模式中存储由第一无线电和第二无线电使用的频率偏移。

公开(公告)号：US09307424B2

公开(公告)日：2016-04-05

申请号：US14198428

申请日：2014-03-05

Applicant: QUALCOMM Incorporated

Inventor： Ozgur Dural ,  Kaushik Chakraborty ,  Soumya Das ,  Bongyong Song ,  Samir Salib Soliman

IPC: H04W24/02 ,  H04W84/12 ,  H04W88/06 ,  H04B17/21

CPC classification number: H04W24/02 ,  H04B17/21 ,  H04W84/12 ,  H04W88/06

Abstract: An apparatus for wireless communication obtains a first metric of a cell based on signals received by a WWAN radio tuned to a common frequency, and a second metric of the cell based on signals received by a WLAN radio tuned to the common frequency. The apparatus determines a calibration factor based on the first and second metrics, and performs cell search and cell measurement based on the calibration factor and signals received by the WLAN radio tuned to a target frequency. The common frequency may be a serving frequency of the WWAN, in which case the first and second metrics are one of frequency or power metrics and the calibration factor is one of a frequency offset and a power offset. The common frequency may also be a target frequency for inter-frequency measurements of the WWAN, in which case the calibration factor is based primarily on power measurements.

公开(公告)号：US20150173011A1

公开(公告)日：2015-06-18

申请号：US14133510

申请日：2013-12-18

Applicant: QUALCOMM INCORPORATED

Inventor： Soumya Das ,  Samel Celebi ,  Kaushik Chakraborty ,  Bongyong Song ,  Samir Salib Soliman

IPC: H04W48/20 ,  H04W16/26 ,  H04W16/14

CPC classification number: H04W16/26 ,  H04W16/02 ,  H04W24/02 ,  H04W56/0015 ,  H04W84/045 ,  H04W92/20

Abstract: A method of coordinating a small cell with a plurality of small cells includes estimating backhaul bandwidth and backhaul bandwidth utilization of the small cell; estimating aggregate bandwidth utilization for the small cell and the plurality of small cells based on the estimated backhaul bandwidth utilization for each of the small cells; selecting the small cell as a cluster head for a cluster of the small cells based on the estimated aggregate backhaul bandwidth utilization, the cluster including at least some of the small cells; and communicating, via the cluster head, information between a network entity and the small cells of the cluster.

Abstract translation: 将小单元与多个小单元协调的方法包括估计小单元的回程带宽和回程带宽利用率; 基于每个小小区的估计的回程带宽利用率来估计小小区和多个小小区的总带宽利用率; 基于估计的总回程带宽利用率，将小小区选择为小小区簇的簇头，所述群包括至少一些小小区; 并且经由群集头部在网络实体和群集的小小区之间通信。

公开(公告)号：US20140148179A1

公开(公告)日：2014-05-29

申请号：US13685469

申请日：2012-11-26

Applicant: QUALCOMM INCORPORATED

Inventor： Soumya Das ,  Bongyong Song ,  Samir Salib Soliman ,  Kaushik Chakraborty

IPC: H04W72/04

CPC classification number: H04J11/004 ,  H04B1/7107 ,  H04B2201/698 ,  H04B2201/70702

Abstract: A method of managing uplink interference at a base station includes: detecting uplink interference caused by one or more inter-cell user equipments to an uplink channel of a base station, the one or more inter-cell user equipments associated with a neighboring base station; receiving, at the base station, assistance information from the neighboring base station, the assistance information comprising a parameter list of ongoing transmissions by the one or more user equipments associated with the neighboring base station; and performing uplink interference cancellation, at the base station, on at least a portion of a received signal based on the assistance information to generate a resulting signal.

Abstract translation: 一种在基站处理上行链路干扰的方法包括：检测由一个或多个小区间用户设备对基站的上行链路信道引起的上行链路干扰，所述一个或多个小区用户设备与相邻基站相关联; 在所述基站处从所述相邻基站接收辅助信息，所述辅助信息包括与所述相邻基站相关联的所述一个或多个用户设备正在进行的传输的参数列表; 以及在所述基站处，基于所述辅助信息在所述接收信号的至少一部分上执行上行链路干扰消除以生成结果信号。

公开(公告)号：US11979843B2

公开(公告)日：2024-05-07

申请号：US16808200

申请日：2020-03-03

Applicant: QUALCOMM INCORPORATED

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Xiaoxia Zhang ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Sumeeth Nagaraja ,  Wooseok Nam

IPC: H04L1/00 ,  H04J11/00 ,  H04L1/1607 ,  H04L5/00 ,  H04W56/00 ,  H04B7/06 ,  H04B7/212 ,  H04B7/26 ,  H04L27/26 ,  H04W88/16

CPC classification number: H04W56/001 ,  H04J11/0053 ,  H04L1/00 ,  H04L1/1692 ,  H04L5/0028 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0073 ,  H04L5/0082 ,  H04B7/0617 ,  H04B7/066 ,  H04B7/212 ,  H04B7/2628 ,  H04L5/0023 ,  H04L27/261 ,  H04W88/16

Abstract: Wireless communications systems and methods related to synchronization signal (SS) transmission coordination among base stations (BSs) and restricted SS measurements at user equipments (UEs) are provided. A first BS transmits a first SS burst in a first SS transmission period of a plurality of SS transmission periods. The first SS transmission period is designated to the first BS. A second SS transmission period of the plurality of SS transmission periods is designated to a second BS. The first SS transmission period and the second SS transmission period are different. The first BS receives, from a UE, a first signal in synchronization with the first SS burst. The first signal includes a SS measurement of the first SS burst.

公开(公告)号：US11638289B2

公开(公告)日：2023-04-25

申请号：US16949328

申请日：2020-10-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/23 ,  H04W24/10 ,  H04L1/00 ,  H04L5/00 ,  H04W16/14 ,  H04W84/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure a first reference signal, associated with a frequency band of a long term evolution (LTE) system, and a second reference signal associated with a frequency band of a new radio (NR) system. The frequency band of the NR system may overlap the frequency band of the LTE system. The UE may determine first channel state feedback, associated with the frequency band of the LTE system, and second channel state feedback, associated with the frequency band of the NR system, based at least in part on the first reference signal and the second reference signal, respectively. The UE may report the first channel state feedback or the second channel state feedback in uplink control information (UCI). Other aspects are provided.

公开(公告)号：US11510243B2

公开(公告)日：2022-11-22

申请号：US16910830

申请日：2020-06-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo ,  Sungwoo Park ,  Wooseok Nam ,  Jing Sun ,  Kaushik Chakraborty ,  Zhifei Fan ,  Mostafa Khoshnevisan

IPC: H04W74/08 ,  H04B7/06 ,  H04W88/08 ,  H04W16/28 ,  H04W72/12 ,  H04W72/04 ,  H04W74/04

Abstract: This disclosure provides systems, methods, and apparatuses for a beam-based channel access countdown procedure. In one aspect, a channel sensing beam may be permitted to include one or more transmit beams and, thus, may differ from a transmit beam that is to be used for a transmission. As such, defining a manner in which a channel access countdown procedure is performed is desirable. Some aspects described herein provide techniques and apparatus for a beam-based channel access countdown procedure. In some aspects, the systems, methods, and apparatuses described herein provide a beam-based channel access countdown procedure that allows a single channel sensing beam, including multiple transmit beams, to be utilized in association with determining channel availability for the multiple transmit beams, thereby improving performance of beam-based directional transmissions.

公开(公告)号：US11362704B2

公开(公告)日：2022-06-14

申请号：US17199088

申请日：2021-03-11

Applicant: QUALCOMM INCORPORATED

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Rahul Malik ,  Kaushik Chakraborty

IPC: H04W56/00 ,  H04B7/0408 ,  H04B7/0413 ,  H04W72/04 ,  H04B7/08 ,  H04B7/06 ,  H04L5/00 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may configure a first sub-band and a second sub-band of a system bandwidth for communication with a user equipment (UE). The base station may determine a spatial quasi co-location (QCL) relationship between the first sub-band and the second sub-band and may transmit signaling to the UE that indicates the determined spatial QCL relationship. Upon receiving the signaling, the UE may derive, based on the indicated spatial QCL relationship, spatial parameters (e.g., beam width, pointing angle, etc.) for communication with the base station via the second sub-band. The spatial parameters may be derived based on spatial parameters used for reception of a downlink transmission from the base station via the first sub-band. Subsequently, the UE may communicate with the base station via the second sub-band using the derived spatial parameters.

公开(公告)号：US11349619B2

公开(公告)日：2022-05-31

申请号：US16940086

申请日：2020-07-27

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Makesh Pravin John Wilson ,  Sony Akkarakaran ,  Kaushik Chakraborty ,  Shengbo Chen

IPC: H04L5/00 ,  H04L5/14 ,  H04W72/04 ,  H04W72/08 ,  H04W24/10

Abstract: Aspects herein describe transmitting reference signals in wireless communications. An indication of resources over which to transmit an uplink reference signal can be received from an access point, where the resources are at least partially used by another device to transmit a downlink reference signal or a second uplink reference signal. The uplink reference signal can be transmitted over the resources.

公开(公告)号：US11272526B2

公开(公告)日：2022-03-08

申请号：US16405339

申请日：2019-05-07

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04W72/12 ,  H04W74/08 ,  H04W16/14

Abstract: Wireless communications systems and methods related to operating in a network deployed in a downlink (DL) unlicensed band and an uplink (UL) licensed band are provided. A first wireless communication device communicates, with a second wireless communication device, a first downlink communication signal in a downlink unlicensed band of a network. The first wireless communication device communicates, with the second wireless communication device, a second downlink communication signal in an uplink licensed band of the network. The second downlink communication signal includes at least one of a synchronization signal block (SSB), system information, a random access response, a contention resolution message, paging information, a downlink feedback signal, or low-latency data.