公开(公告)号：US20190159220A1

公开(公告)日：2019-05-23

申请号：US15816884

申请日：2017-11-17

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Ragab Elsherif ,  Srinivas Katar

IPC: H04W72/12 ,  H04B7/0452 ,  H04W28/02 ,  H04W72/04 ,  H04L1/00

Abstract: Uplink multi-user multiple-in, multiple-out (UL MU-MIMO) transmissions involve coordinating or scheduling stations communications with an access point. Methods and systems for scheduling UL MU-MIMO transmissions provide selection of stations permitted to communicate during the UL MU-MIMO transmission. One such method includes transmitting a first trigger message that requests each station to transmit a second message to the access point. The method also includes receiving the second messages from responding stations and estimating, based on the second messages, one or more parameters for each responding station. The method further includes generating a schedule for the stations to transmit data to the access point and transmitting a second trigger message to the stations, the second trigger message identifying the schedule and the stations that are scheduled to transmit UL data to the access point according to the schedule. The method also includes receiving data during the UL MU-MIMO transmission opportunity from the stations.

公开(公告)号：US20180295573A1

公开(公告)日：2018-10-11

申请号：US15481106

申请日：2017-04-06

Applicant: QUALCOMM Incorporated

Inventor： Ravi Gidvani ,  Sandip HomChaudhuri ,  Zhanfeng Jia ,  BadriSrinivasan Sampathkumar ,  Alireza Raissinia ,  Srinivas Katar ,  Madhan Jaganathan ,  Xiaolong Huang

IPC: H04W52/02 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may communicate with a plurality of stations in a basic service set (BSS) according to a target wakeup time (TWT) slot duration. The AP may identify one or more congestion or interference factors for the BSS. In some cases, the AP may identify a congestion score based at least in part on at least one of the one or more congestion factors from one or more stations that can be part of its own BSS, and an interference score based at least in part on at least one of the one or more interference factors form one or more stations that are not part of AP's BSS. In some cases, the AP may modify the TWT slot duration based at least in part on the congestion score and the interference score.

公开(公告)号：US20180242344A1

公开(公告)日：2018-08-23

申请号：US15932209

申请日：2018-02-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Madhan Jaganathan ,  Nathaniel David Houghton ,  Madhavan Nair ,  Srinivas Katar ,  Ahmed Ragab Elsherif

IPC: H04W72/12 ,  H04W72/04

CPC classification number: H04W72/1257 ,  H04W72/04 ,  H04W72/1252 ,  H04W84/12

Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus may be configured to determine a scheduling metric for each respective station of a plurality of stations. The scheduling metric for each station may be based on an effective spatial-time-frequency physical layer (PHY) capability for the station and a consumption rate of spatial-time-frequency resources by the respective station. The effective spatial-time-frequency PHY capability for the station may be a product of a target percentage of spatial-time resources allocated to the station, an effective number of spatial streams supported by the respective station, and a maximum bandwidth. The consumption rate of spatial-time-frequency resources may be a transmit opportunity (TXOP) moving average of consumption rate by the station. The apparatus may be configured to schedule each station of the plurality of stations for communication based on the determined scheduling metric for each respective station.

公开(公告)号：US10028156B2

公开(公告)日：2018-07-17

申请号：US14943659

申请日：2015-11-17

Applicant: QUALCOMM Incorporated

Inventor： Sandip HomChaudhuri ,  Xiaolong Huang ,  Pradeep Kumar Yenganti ,  Srinivas Katar

IPC: H04W28/02 ,  H04W24/08 ,  H04W72/04 ,  H04W36/08 ,  H04W36/30 ,  H04L12/801 ,  H04W40/12 ,  H04W36/00 ,  H04W36/22

Abstract: Methods, systems, and devices are described for wireless communications. A device may utilize enhanced roaming techniques to identify a candidate channel for roaming. In one example, a device determines whether a candidate channel is congested by calculating a congestion metric associated with traffic over the shared channel. In some examples, the congestion metric is calculated based at least in part on an amount of energy measured over the candidate. For instance, the calculated congestion metric can be an instantaneous congestion level measured during a CCA. The device may then determine whether to roam to the candidate channel based at least in part on the calculated congestion metric.

公开(公告)号：US09800520B2

公开(公告)日：2017-10-24

申请号：US14860004

申请日：2015-09-21

Applicant: QUALCOMM Incorporated

Inventor： Rouhana Rouhana ,  Hassan Kaywan Afkhami ,  Srinivas Katar

IPC: H04L12/911 ,  H04L12/801 ,  H04L5/00 ,  H04L27/34

CPC classification number: H04L47/828 ,  H04L5/001 ,  H04L5/0041 ,  H04L5/006 ,  H04L5/0071 ,  H04L27/34 ,  H04L47/15

Abstract: A master network device determines to transmit data from the master network device to a plurality of client network devices of a network. In one example, the master network device can generate a data frame including a payload with a plurality of symbols. The payload may include at least one symbol allocated for each of the client network devices. The plurality of symbols may be arranged in a predefined pattern in the payload. In another example, the master network device may generate a data frame including a payload with one or more symbols. Each symbol may include a plurality of frequency carriers, and may include at least one frequency carrier allocated for each of the client network devices. The plurality of frequency carriers can be allotted to the client network devices according to a partitioning pattern. The master network device then transmits the data frame to the client network devices.

公开(公告)号：US09749942B2

公开(公告)日：2017-08-29

申请号：US15065037

申请日：2016-03-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Katar ,  Xiaolong Huang ,  Hoon Ki Lee ,  Farrukh Usmani

IPC: H04W4/00 ,  H04W48/16 ,  H04B17/318 ,  H04W8/22 ,  H04W36/00 ,  H04W64/00 ,  H04W84/12

CPC classification number: H04W48/16 ,  H04B17/318 ,  H04W8/22 ,  H04W36/0094 ,  H04W64/006 ,  H04W84/12 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: Systems and methods are disclosed that may adjust the likelihood and/or frequency with which a wireless device performs scanning operations to reduce power consumption without degrading the ability of the wireless device to identify the best available access point with which to associate. In some aspects, the wireless device may adjust the likelihood and/or frequency of performing scanning operations based on a motion state of the wireless device, a change in the motion state of the wireless device, a signal strength of an associated access point, and/or the connection status of the wireless device.

公开(公告)号：US09614585B2

公开(公告)日：2017-04-04

申请号：US13754466

申请日：2013-01-30

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Katar ,  Rouhana Rouhana ,  Hao Zhu

IPC: B60L1/00 ,  B60L3/00 ,  H02G3/00 ,  H04B3/54 ,  B60L11/18

CPC classification number: H04B3/54 ,  B60L3/0069 ,  B60L11/1816 ,  B60L11/1824 ,  B60L11/1846 ,  B60L11/1861 ,  B60L2240/70 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7072 ,  Y02T10/7291 ,  Y02T90/121 ,  Y02T90/128 ,  Y02T90/14 ,  Y02T90/16 ,  Y02T90/163 ,  Y02T90/169 ,  Y04S30/14

Abstract: A service provider device of a local communication network communicates a first frame with an electric vehicle via a first communication medium to associate with the electric vehicle, establish a communication link with the electric vehicle, and to add the electric vehicle to the local communication network. After an association process between the electric vehicle and the service provider device is successfully completed, the electric vehicle and/or the service provider device can execute operations that extend the utility of their respective communication devices by switching to a new communication medium. By switching to the new communication medium, the electric vehicle and/or the service provider device can connect to a remote communication network. The service provider device communicates a second frame with at least a network device of the remote communication network via the new communication medium.

公开(公告)号：US20170086061A1

公开(公告)日：2017-03-23

申请号：US14861992

申请日：2015-09-22

Applicant: QUALCOMM Incorporated

Inventor： Xiaolong Huang ,  Chao Zou ,  Srinivas Katar

IPC: H04W8/18 ,  H04L12/851 ,  H04W28/08

CPC classification number: H04W8/186 ,  H04L47/24 ,  H04W4/02 ,  H04W4/06 ,  H04W4/08 ,  H04W8/26 ,  H04W84/12

Abstract: Methods, systems, and devices are described for wireless communication. An access point (AP) may group stations (STAs) into multi-user (MU) groups with group identifiers (IDs). Within each MU group, the AP may dynamically configure several STAs into a transmission set. Each transmission set may include a different combination of STAs. In some cases, the AP may assign a STA to multiple transmission sets within a group ID. In certain scenarios, the AP may assign a STA to more than one group ID. The AP may restrict the number of group IDs to which a STA is assigned. Each MU group may include a number of user positions that may be occupied by one or more STAs. In some cases, the AP may restrict the number of STAs that may be assigned to (i.e., occupy) each user position.

公开(公告)号：US20170063438A1

公开(公告)日：2017-03-02

申请号：US14842592

申请日：2015-09-01

Applicant: QUALCOMM Incorporated

Inventor： Eugene Baik ,  Ahmed Ragab Elsherif ,  Qinghai Gao ,  Gregory Steele ,  Srinivas Katar ,  Didier Johannes Richard van Nee ,  Ehab Tahir

IPC: H04B7/04 ,  H04W16/28 ,  H04L5/00

CPC classification number: H04L5/006 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0632 ,  H04L5/0023 ,  H04L5/0037

Abstract: Methods, systems, and devices are described for wireless communication. In one aspect, a method of wireless communication includes receiving, by a first wireless device, compressed beamforming information from each of a plurality of stations, the compressed beamforming information including a feedback signal-to-noise ratio (SNR) value and compressed feedback matrix. The method also includes determining a multi-user signal-to-interference-plus noise ratio (SINR) metric for each of the plurality of stations based at least in part on the received feedback SNR values and the received compressed feedback matrices.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 一方面，一种无线通信方法包括：由第一无线设备从多个站中的每一个接收压缩波束成形信息，所述压缩波束成形信息包括反馈信噪比（SNR）值和压缩反馈矩阵 。 该方法还包括至少部分地基于所接收的反馈SNR值和接收的压缩反馈矩阵来确定多个站中的每一个的多用户信号与干扰加噪声比（SINR）度量。

公开(公告)号：US20160345343A1

公开(公告)日：2016-11-24

申请号：US14857562

申请日：2015-09-17

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Ragab Elsherif ,  Qinghai Gao ,  Xiaolong Huang ,  Ehab Tahir ,  Nathaniel Houghton ,  Vincent Knowles Jones, IV ,  Srinivas Katar

IPC: H04W72/12 ,  H04W72/10 ,  H04L1/00 ,  H04B7/04

CPC classification number: H04W72/121 ,  H04B7/0452 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0092 ,  H04W72/046 ,  H04W72/10 ,  H04W72/1226 ,  H04W72/1231 ,  H04W72/1247 ,  H04W72/1273 ,  H04W72/1289

Abstract: Methods, systems, and apparatuses are described for wireless communications. More particularly, an access point (AP) identifies a plurality of multi-user multiple-input multiple-output (MU-MIMO) groups associated with a wireless station (STA). The AP determines a communication metric associated with each of the plurality of MU-MIMO groups. The communication metric provides an indication of the compatibility of the STAs in the MU-MIMO group. The AP prioritizes at least one of the plurality of MU-MIMO groups based at least in part on the communication metric associated with the prioritized MU-MIMO group. The AP creates a preferred group list and/or a blacklisted group list and included the prioritized MU-MIMO group in the appropriate group list.

Abstract translation: 为无线通信描述了方法，系统和装置。 更具体地，接入点（AP）识别与无线站（STA）相关联的多个多用户多输入多输出（MU-MIMO）组。 AP确定与多个MU-MIMO组中的每一个相关联的通信度量。 通信度量提供MU-MIMO组中STA的兼容性的指示。 AP至少部分地基于与优先化的MU-MIMO组相关联的通信度量来优先考虑多个MU-MIMO组中的至少一个。 AP创建优选组列表和/或黑名单组列表，并将优先级MU-MIMO组包括在适当的组列表中。