公开(公告)号：WO2018231386A1

公开(公告)日：2018-12-20

申请号：PCT/US2018/032052

申请日：2018-05-10

Applicant: QUALCOMM INCORPORATED

Inventor： ELSHERIF, Ahmed Ragab ,  KATAR, Srinivas

IPC: H04L1/00

CPC classification number: H04L1/0034 ,  H04B7/0452 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/001 ,  H04L1/0011 ,  H04L2001/0093

Abstract: Certain aspects of the present disclosure relate to determining a signaling field modulation and coding scheme (MCS) value for communicating information in a signaling field of a frame to a plurality of user devices. Certain aspects of the present disclosure provide a method for wireless communications by an access point (AP). The method includes determining a signaling field modulation and coding scheme (MCS) value for communicating information in a signaling field of a frame to a plurality of user devices based on one or more data MCS values for communicating payload data of the frame to the plurality of user devices. The method further includes transmitting the frame to the plurality of user devices using the determined signaling field MCS value for the signaling field.

公开(公告)号：WO2018194930A1

公开(公告)日：2018-10-25

申请号：PCT/US2018/027582

申请日：2018-04-13

Applicant: QUALCOMM INCORPORATED

Inventor： HUANG, Xiaolong ,  KATAR, Srinivas ,  HO, Sai Yiu Duncan ,  RAISSINIA, Alireza ,  BUESKER, Brian Michael ,  CHERIAN, George ,  PATHAK, Ajay Kumar ,  ZHU, Hao

IPC: H04W40/12 ,  H04W40/22 ,  H04W40/24 ,  H04L12/729 ,  H04L12/727 ,  H04L12/733 ,  H04L12/721 ,  H04L12/707 ,  H04L12/725 ,  H04W24/10 ,  H04W36/00

CPC classification number: H04W36/08 ,  H04L45/121 ,  H04L45/122 ,  H04L45/124 ,  H04L45/125 ,  H04L45/22 ,  H04L45/302 ,  H04W24/10 ,  H04W36/0044 ,  H04W36/00835 ,  H04W36/0088 ,  H04W36/26 ,  H04W36/30 ,  H04W40/12 ,  H04W40/22 ,  H04W40/24 ,  H04W48/20 ,  H04W84/12

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer-readable media, for serving AP selection in a network having multiple access points (APs). In one aspect, a serving AP selection unit can steer a device (such as a client station, STA, or a child AP) based on a quality of service profile (such as a capacity requirement or a delay requirement) of the device. The device may be initially associated with a first AP (as the current serving AP) in the network. The serving AP selection unit may select a second AP as a new serving AP for the device, and cause the device to associate with the second AP rather than the first AP. The selection of a serving AP may take into account delay or hop count in addition to path capacities for various paths in the network.

公开(公告)号：WO2017039809A1

公开(公告)日：2017-03-09

申请号：PCT/US2016/039907

申请日：2016-06-28

Applicant: QUALCOMM INCORPORATED

Inventor： KATAR, Srinivas ,  HUANG, Xiaolong ,  SAHAI, Keshav, Kishore ,  USMANI, Farrukh ,  LEE, Hoon Ki

IPC: H04W48/16

CPC classification number: H04W48/16 ,  H04B17/318 ,  H04L43/16 ,  H04W8/02 ,  H04W24/02 ,  H04W24/10

Abstract: Methods, systems, and devices are described for wireless communications. A communication device may utilize enhanced roaming techniques to dynamically adjust signal strength thresholds in a high density AP environment. For instance, a communication device determines a signal strength of a communication link between a wireless device and an access point (AP). The communication device further compares the signal strength value to at least a low threshold and a high threshold and performs a channel scan for the communication link when the signal strength value is below the low threshold. The communication device also adjusts the low threshold when the signal strength value is greater than the high threshold.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 通信设备可以利用增强的漫游技术在高密度AP环境中动态调整信号强度阈值。 例如，通信设备确定无线设备和接入点（AP）之间的通信链路的信号强度。 通信装置还将信号强度值与至少低阈值和高阈值进行比较，并且当信号强度值低于低阈值时，对通信链路进行信道扫描。 当信号强度值大于高阈值时，通信设备还调整低阈值。

公开(公告)号：WO2017011481A1

公开(公告)日：2017-01-19

申请号：PCT/US2016/041946

申请日：2016-07-12

Applicant: QUALCOMM INCORPORATED

Inventor： KATAR, Srinivas ,  HUANG, Xiaolong ,  LEE, Hoonki ,  USMANI, Farrukh

IPC: H04W48/16 ,  H04W84/12 ,  H04W64/00

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.

Abstract translation: 公开了可以调整无线设备执行扫描操作以降低功耗的可能性和/或频率的系统和方法，而不降低无线设备识别与之关联的最佳可用接入点的能力。 在一些方面，无线设备可以基于无线设备的运动状态，无线设备的运动状态的改变，相关接入点的信号强度以及相关接入点的信号强度来调整执行扫描操作的可能性和/或频率 /或无线设备的连接状态。

公开(公告)号：WO2016161106A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/025255

申请日：2016-03-31

Applicant: QUALCOMM INCORPORATED

Inventor： KATAR, Srinivas ,  CHO, James, Simon ,  FREDERIKS, Guido ,  GAO, Qinghai ,  HUANG, Xiaolong ,  ZOU, Chao ,  MALIK, Rahul

IPC: H04W74/00

CPC classification number: H04W72/0446 ,  H04W24/08 ,  H04W28/06 ,  H04W52/0235 ,  H04W74/002 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/23

Abstract: Methods, systems, and devices are described for wireless communication at a wireless device. A wireless device ( e.g ., station or access point) may adapt short inter-frame space (SIFS) burst parameters to improve the performance of the overall network while providing enriched user experience. A wireless device may monitor traffic conditions on the network and dynamically adapt the SIFS burst parameters associated with one or more stations based at least in part on detected variations on the traffic channel. In other examples, the wireless device may allocate a common SIFS burst parameter to be used by a plurality of wireless devices in the basic service set (BSS).

Abstract translation: 描述了在无线设备处的无线通信的方法，系统和设备。 无线设备（例如，站点或接入点）可以适应短帧间空间（SIFS）突发参数以改善整个网络的性能，同时提供丰富的用户体验。 无线设备可以至少部分地基于在业务信道上检测到的变化来监视网络上的业务状况并动态地适应与一个或多个站相关联的SIFS突发参数。 在其他示例中，无线设备可以分配将由基本服务集（BSS）中的多个无线设备使用的公共SIFS突发参数。

公开(公告)号：WO2016094556A1

公开(公告)日：2016-06-16

申请号：PCT/US2015/064788

申请日：2015-12-09

Applicant: QUALCOMM INCORPORATED

Inventor： KIM, Youhan ,  JIA, Zhanfeng ,  KATAR, Srinivas ,  MALIK, Rahul ,  SUNDARARAJAN, Jay Kumar ,  MEYLAN, Arnaud ,  ZHANG, Ning ,  CHERIAN, George

IPC: H04W48/16 ,  H04W28/16

CPC classification number: H04W24/10 ,  H04W28/16 ,  H04W48/12 ,  H04W48/16 ,  H04W48/20

Abstract: Methods, apparatus, and computer-readable media for wireless communication may involve techniques for throughput estimation. An expected air time parameter may be used as a parameter for estimating throughput. The expected air time parameter may be indicative of an estimated air time fraction obtainable for communications using an access point (AP), for example, between a wireless station (STA) and the AP. Either the expected air time parameter or an estimated air time fraction determined (e.g., calculated) from the expected air time parameter may be transmitted from the AP to the STA (or other communication device) to allow the STA (or other communication device) to determine an estimated throughput for communications using the AP.

Abstract translation: 用于无线通信的方法，装置和计算机可读介质可以涉及用于吞吐量估计的技术。 可以使用预期的空中时间参数作为估计吞吐量的参数。 预期空中时间参数可以指示例如在无线站（STA）和AP之间使用接入点（AP）的通信可获得的估计空中时间分数。 可以从AP向STA（或其他通信设备）发送从预期空中时间参数确定（例如，计算）的预期空中时间参数或估计空中时间分数，以允许STA（或其他通信设备） 确定使用AP的通信的估计吞吐量。

公开(公告)号：WO2015130684A1

公开(公告)日：2015-09-03

申请号：PCT/US2015/017335

申请日：2015-02-24

Applicant: QUALCOMM INCORPORATED

Inventor： KATAR, Srinivas ,  YONGE, Lawrence, Winston, III ,  SCHRUM, Sidney, Brower, Jr.

IPC: H04B3/54 ,  H04L12/28 ,  H04J3/00 ,  H04L12/801 ,  H04L12/851

CPC classification number: H04L47/2433 ,  H04B3/54 ,  H04B3/542 ,  H04B3/544 ,  H04B2203/5408 ,  H04J3/1682 ,  H04L12/2838 ,  H04L47/13 ,  H04L47/24 ,  H04L2012/2843

Abstract: A slotted message access protocol can be implemented for transmitting short packets. Each beacon period may be divided into multiple time slots. At least one time slot may be assigned to a network device per beacon period based, at least in part, on latency specifications of packets that the network device is configured to transmit. In one example, some of the unassigned time slots may be designated as contention-based time slots. Network devices may contend with each other to gain control of and transmit packets during a contention-based time slot based on the priority level of the packets. Network devices may also use an encryption key and an initialization vector for securely exchanging short packets. Furthermore, a repeater network device may be designated to retransmit a packet, received from an original transmitting network device, during a communication time slot assigned to the original transmitting network device.

Abstract translation: 可以实现用于发送短分组的时隙消息接入协议。 每个信标周期可以被划分成多个时隙。 至少部分地基于网络设备被配置为发送的分组的等待时间规格，至少一个时隙可以被分配给每个信标周期的网络设备。 在一个示例中，一些未分配的时隙可以被指定为基于竞争的时隙。 网络设备可以相互竞争，以在基于竞争的时隙内基于分组的优先级来获得对分组的控制和传输。 网络设备还可以使用加密密钥和初始化向量来安全地交换短分组。 此外，可以指定中继器网络设备在分配给原始发送网络设备的通信时隙期间重传从原始发送网络设备接收的分组。

公开(公告)号：WO2022186929A1

公开(公告)日：2022-09-09

申请号：PCT/US2022/014528

申请日：2022-01-31

Applicant: QUALCOMM INCORPORATED

Inventor： XUE, Qi ,  KATAR, Srinivas ,  ZOU, Chao ,  GANGADHARAN, Naveen ,  NURANI KRISHNAN, Neelakantan ,  HOMCHAUDHURI, Sandip ,  HUANG, Xiaolong ,  ASHOK, Anish

IPC: H04W74/08

Abstract: This disclosure provides systems, methods and apparatus for asynchronous channel access control of a wireless system. In some aspects, a device may adjust the priority of one or more PPDUs and may perform other operations to ensure control of a wireless medium at certain times while still allowing for other devices to communicate on the wireless medium. For example, the device may adjust a backoff counter or one or more EDCA parameters to ensure obtaining control of the wireless medium to transmit a first PPDU of an application file. For one or more subsequent PPDUs of the application file, the device may again adjust a backoff counter or one or more EDCA parameters to allow other devices to obtain control of the wireless medium in certain scenarios (such as a second device to provide information back to the device or to otherwise transmit using the shared wireless medium).

公开(公告)号：WO2018212847A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/026426

申请日：2018-04-06

Applicant: QUALCOMM INCORPORATED

Inventor： ZOU, Chao ,  ELSHERIF, Ahmed Ragab ,  ZHU, Hao ,  KATAR, Srinivas

IPC: H04L1/00 ,  H04B7/0456 ,  H04L1/20

CPC classification number: H04B7/024 ,  H04B7/0452 ,  H04B7/0456 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0048 ,  H04L1/203 ,  H04L25/08 ,  H04W24/08 ,  H04W88/06

Abstract: The present disclosure provides techniques for grouping in multi-user multiple-input-multiple-output (MU-MIMO) systems by using limited probing. With more wireless stations (STAs) being used in MU-MIMO groups, the probing used to obtain packet error metrics to determine the throughput for selecting the MU-MIMO groups for transmission can become more complex and involve a larger overhead. To reduce the probing overhead, various techniques are described in this disclosure. For example, an access point (AP) can identify a trigger to initiate a packet error probing. In response to the trigger, the AP embeds one or more probing packets that are part of the packet error probing within a short interframe space (SIFS)-burst data transmission process to take advantage of the existing structure of the process. Then, the AP can update at least one packet error metric (e.g., packet error rate or PER) based on feedback received in response to the probing packets.

公开(公告)号：WO2018004844A1

公开(公告)日：2018-01-04

申请号：PCT/US2017/032722

申请日：2017-05-15

Applicant: QUALCOMM INCORPORATED

Inventor： HUANG, Xiaolong ,  ZHU, Hao ,  KATAR, Srinivas ,  GANGADHARAN, Naveen ,  JAGANATHAN, Madhan ,  HOUGHTON, Nathaniel ,  NAHATA, Sabita ,  BANERJEA, Raja ,  RAISSINIA, Alireza ,  CHO, James ,  CHENG, Chao

IPC: H04B7/0452 ,  H04L5/00

Abstract: A device includes a memory, a processor, and a transceiver. The memory is configured to store capability data corresponding to a set of stations. The processor is configured to select, based at least in part on the capability data, one of a multi-user multiple-input multiple-output (MU-MIMO) mode or an orthogonal frequency-division multiple access (OFDMA) mode for wireless communication with a subset of the set of stations. The transceiver is configured to wirelessly communicate with the subset in the selected one of the MU-MIMO mode or the OFDMA mode.

Abstract translation: 设备包括存储器，处理器和收发器。 存储器被配置为存储对应于一组站的能力数据。 处理器被配置为至少部分地基于能力数据来选择用于无线通信的多用户多输入多输出（MU-MIMO）模式或正交频分多址（OFDMA）模式之一 与该组电台的一个子集。 收发器被配置为与MU-MIMO模式或OFDMA模式中所选择的一个中的子集进行无线通信。