公开(公告)号：US09743258B1

公开(公告)日：2017-08-22

申请号：US15365751

申请日：2016-11-30

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Ragab Elsherif ,  Srinivas Katar

IPC: H04B7/00 ,  H04L5/00 ,  H04W4/08 ,  H04B17/336 ,  H04W28/14 ,  H04B7/06 ,  H04W24/02 ,  H04B7/0452 ,  H04L29/08

CPC classification number: H04W4/08 ,  H04B7/0452 ,  H04B7/0617 ,  H04B17/336 ,  H04L5/0023 ,  H04L5/006 ,  H04L67/322 ,  H04L69/323 ,  H04W24/02 ,  H04W28/14

Abstract: Methods and apparatuses are disclosed for managing multi-user multiple-input multiple-out (MU-MIMO) groups by a wireless device. For at least some embodiments, a wireless communication device may determine a MU-MIMO group by identifying a plurality of MU-MIMO capable stations, determine a plurality of MU-MIMO group candidates from the plurality of MU-MIMO capable STAs based, at least in part, on a predicted data throughput of an MU-MIMO group including at least one of the plurality of MU-MIMO capable STAs, and create a MU-MIMO group from the plurality of MU-MIMO candidates. The predicted data throughput may be based, at least in part, on media access control (MAC) and physical (PHY) layer parameters. In some embodiments, the PHY layer parameters may include historic group size and/or historic multi-user signal-to-interference-plus-noise ratio data.

公开(公告)号：US09622262B2

公开(公告)日：2017-04-11

申请号：US14268855

申请日：2014-05-02

Applicant: QUALCOMM Incorporated

Inventor： Hao Zhu ,  Srinivas Katar ,  Simone Merlin ,  Chao Zou ,  Gwendolyn Denise Barriac ,  George Cherian ,  Santosh Paul Abraham ,  Lawrence Winston Yonge, III ,  Hemanth Sampath

IPC: H04W4/00 ,  H04W74/00 ,  H04W74/04

CPC classification number: H04W74/002 ,  H04W74/04

Abstract: A method includes determining, at a first transmitter, a clear channel access (CCA) threshold associated with reuse of a first transmit opportunity (TXOP) of a message. The method further includes sending, from the first transmitter to a first receiver, at least a portion of the message, wherein the portion of the message indicates the CCA threshold.

公开(公告)号：US20170094556A1

公开(公告)日：2017-03-30

申请号：US14866595

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Sandip HomChaudhuri ,  Pradeep Kumar Yenganti ,  Michael Richard Green ,  Alireza Raissinia ,  Srinivas Katar ,  Hoon Ki Lee

IPC: H04W28/06 ,  H04L12/801

CPC classification number: H04W28/06 ,  H04L47/11 ,  H04W48/16 ,  H04W84/12

Abstract: Methods, systems, and apparatuses are described for adaptive dwell time for scan procedures. A wireless station (STA) may identify a scan period during which a passive scan procedure is performed on a first channel. The STA may analyze a channel congestion metric during at least a portion of the scan period. The STA may transition from the passive scan procedure to an active scan procedure on the first channel during the scan period based at least in part on the analyzed channel congestion metric.

公开(公告)号：US20170064618A1

公开(公告)日：2017-03-02

申请号：US14843597

申请日：2015-09-02

Applicant: QUALCOMM Incorporated

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

IPC: H04W48/16 ,  H04W8/02 ,  H04W24/10 ,  H04W24/02 ,  H04L12/26

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：US20170041961A1

公开(公告)日：2017-02-09

申请号：US14819207

申请日：2015-08-05

Applicant: QUALCOMM Incorporated

Inventor： Chao Zou ,  Srinivas Katar ,  Xiaolong Huang ,  Hao Zhu

IPC: H04W74/08 ,  H04L12/807 ,  H04W24/08

CPC classification number: H04W74/0875 ,  H04L47/27 ,  H04W24/08 ,  H04W74/002 ,  H04W74/0891 ,  H04W84/12

Abstract: Methods, systems, and devices are described for wireless communication. A wireless device may detect a delay in reverse link throughput. The wireless device may reduce the delay by modifying channel access parameters. In one aspect, the wireless device may adjust enhanced distributed channel access (EDCA) parameters. For example, the wireless device may modify contention window size (CW) and arbitration interframe spacing (AIFS). In some cases, the wireless device may instigate EDCA parameter adjustments in another wireless device in the wireless system (e.g., by sending an EDCA adjustment request message). The channel access adjustments may be triggered by detection of various conditions that are indicative of the reverse link delay. For example, the wireless device may monitor the communication of acknowledgments (ACKs) and adjust EDCA parameters if the ACKs are delayed. In other cases, the wireless device may adjust EDCA parameters based at least in part on multi-user (MU) communications.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 无线设备可以检测到反向链路吞吐量的延迟。 无线设备可以通过修改信道接入参数来减少延迟。 在一个方面，无线设备可以调整增强的分布式信道访问（EDCA）参数。 例如，无线设备可以修改竞争窗口大小（CW）和仲裁帧间间隔（AIFS）。 在一些情况下，无线设备可以在无线系统中的另一无线设备（例如通过发送EDCA调整请求消息）中发起EDCA参数调整。 可以通过检测指示反向链路延迟的各种条件来触发频道访问调整。 例如，如果ACK被延迟，则无线设备可以监视确认（ACK）的通信并调整EDCA参数。 在其他情况下，无线设备可以至少部分地基于多用户（MU）通信来调整EDCA参数。

公开(公告)号：US20170019837A1

公开(公告)日：2017-01-19

申请号：US15065037

申请日：2016-03-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W48/16 ,  H04W36/00 ,  H04B17/318 ,  H04W8/22

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：US20170013493A1

公开(公告)日：2017-01-12

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

CPC classification number: H04W24/08 ,  H04L47/12 ,  H04W28/0284 ,  H04W36/0083 ,  H04W36/08 ,  H04W36/22 ,  H04W36/30 ,  H04W40/12 ,  H04W72/0486 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/34

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.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 设备可以利用增强的漫游技术来识别用于漫游的候选信道。 在一个示例中，设备通过计算与共享信道上的业务相关联的拥塞度量来确定候选信道是否拥塞。 在一些示例中，至少部分地基于在候选者上测量的能量的量来计算拥塞度量。 例如，计算的拥塞度量可以是在CCA期间测量的瞬时拥塞水平。 然后，设备可以至少部分地基于所计算的拥塞度量来确定是否漫游到候选信道。

公开(公告)号：US09537641B2

公开(公告)日：2017-01-03

申请号：US13906274

申请日：2013-05-30

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Katar ,  Hassan Kaywan Afkhami ,  Hao Zhu ,  Lawrence Winston Yonge, III

IPC: H04B7/212 ,  H04L5/00 ,  H04B3/54

CPC classification number: H04L5/006 ,  H04B3/544 ,  H04B2203/5425 ,  H04B2203/5445 ,  H04B2203/5495 ,  H04L5/0085

Abstract: A first powerline communication device, associated with a first powerline communication network, determines a plurality of time intervals in a beacon period of the first powerline communication network based, at least in part, on variations in levels of interference from a second powerline communication network which shares a powerline communication medium with the first powerline communication network. The first powerline communication device determines at least one channel adaptation parameter for each of the plurality of time intervals in the beacon period to compensate for effects of the variations in the levels of interference from the second powerline communication network. The first powerline communication device applies the at least one channel adaptation parameter corresponding to one or more of the plurality of time intervals in the beacon period when transmitting data via the powerline communication medium.

Abstract translation: 与第一电力线通信网络相关联的第一电力线通信设备至少部分地基于来自第二电力线通信网络的干扰电平的变化来确定第一电力线通信网络的信标周期中的多个时间间隔， 与第一个电力线通信网络共享电力线通信介质。 第一电力线通信设备为信标周期中的多个时间间隔中的每一个确定至少一个信道自适应参数，以补偿来自第二电力线通信网络的干扰电平的变化的影响。 当通过电力线通信介质发送数据时，第一电力线通信装置应用与信标周期中的多个时间间隔中的一个或多个对应的至少一个信道自适应参数。

公开(公告)号：US09438382B2

公开(公告)日：2016-09-06

申请号：US14085583

申请日：2013-11-20

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Katar ,  Lawrence Winston Yonge, III

IPC: H04L1/16 ,  H04W28/06 ,  H04L1/00 ,  H04L1/18 ,  H04L12/413 ,  H04W84/12 ,  H04L5/00

CPC classification number: H04L1/1607 ,  H04L1/0003 ,  H04L1/0042 ,  H04L1/1628 ,  H04L1/1854 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0091 ,  H04L12/413 ,  H04L25/0202 ,  H04W28/06 ,  H04W84/12

Abstract: A Response Interframe Space (RIFS) time period may be adapted in a communication system. The RIFS time period may be based, at least in part, on channel conditions (e.g., data rate) between a first device and a second device. The RIFS may be optimized in consideration of channel conditions for a particular communications channel and/or characteristics of a particular physical layer transmission. In one embodiment, the RIFS may be dependent on characteristics of a final modulation symbol in a physical layer transmission. The final modulation symbol may include more than one PHY blocks (PBs) or portions of PBs. The RIFS may depend on a number of PBs that end in the final modulation symbol.

Abstract translation: 可以在通信系统中调整响应帧间间隔（RIFS）时间段。 RIFS时间段可以至少部分地基于第一设备和第二设备之间的信道条件（例如，数据速率）。 可以考虑到特定通信信道的信道条件和/或特定物理层传输的特性来优化RIFS。 在一个实施例中，RIFS可以依赖于物理层传输中的最终调制符号的特性。 最终调制符号可以包括多于一个PHY块（PB）或PB的一部分。 RIFS可以取决于以最终调制符号结束的PB的数量。

公开(公告)号：US20160226566A1

公开(公告)日：2016-08-04

申请号：US14831349

申请日：2015-08-20

Applicant: QUALCOMM Incorporated

Inventor： Olaf Josef Hirsch ,  Xiaolong Huang ,  Srinivas Katar

IPC: H04B7/04 ,  H04W24/02 ,  H04W72/04

CPC classification number: H04B7/0452 ,  H04B7/0623 ,  H04B7/0689 ,  H04B7/0871 ,  H04W24/02 ,  H04W52/0225 ,  H04W72/046 ,  H04W72/1215 ,  H04W88/06 ,  H04W88/08 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/166 ,  Y02D70/444

Abstract: Methods, devices, and computer-readable media for wireless communication may involve techniques for managing multi-user (MU) operation when a device in a wireless network has coexisting radios. Such techniques may involve identifying a change in a multiple radio access technology (RAT) coexistence status of a first device, e.g., a change between a coexistence status that is not disruptive to MU communications and one that is disruptive. For a device communicating with a network using Wi-Fi, the change in the multiple RAT coexistence status may indicate a change between inactive Bluetooth (BT) communications and active BT communications concurrent with Wi-Fi communications. Based at least in part on the identified change in the multiple RAT coexistence status, a MU communications operation at a second device may be adjusted, for example, by disabling MU communication between the first and second devices over a first RAT when the first device changes to a coexistence status that may disrupt MU communications.

Abstract translation: 用于无线通信的方法，设备和计算机可读介质可以涉及当无线网络中的设备具有共存无线电时用于管理多用户（MU）操作的技术。 这样的技术可以涉及识别第一设备的多个无线电接入技术（RAT）共存状态的变化，例如，不对MU通信的干扰的共存状态与具有破坏性的共通状态之间的变化。 对于使用Wi-Fi与网络通信的设备，多RAT共存状态的变化可以指示在Wi-Fi通信同时进行的无效蓝牙（BT）通信和主动BT通信之间的变化。 至少部分地基于所识别的多RAT共存状态的变化，可以例如通过在第一设备改变时通过第一RAT在第一和第二设备之间禁用MU通信来调整第二设备处的MU通信操作 到可能破坏MU通信的共存状态。