公开(公告)号：US08948039B2

公开(公告)日：2015-02-03

申请号：US13710968

申请日：2012-12-11

Applicant: QUALCOMM Incorporated

Inventor： John Chappel ,  Brian J. Langlais ,  Joubin Karimi ,  Richard D. Roze ,  Son Binh Cam ,  Din Lee ,  Ehab Tahir

IPC: G06F11/00 ,  H04L1/00 ,  H04L12/26 ,  H04L1/20

CPC classification number: H04L43/00 ,  H04L1/0002 ,  H04L1/203

Abstract: A method includes determining a first Signal-to-Noise Ratio (SNR) average for a first symbol set of at least one or more first symbols in one or more packets. The method includes determining a second SNR average for a second symbol set of at least one or more second symbols in the one or more packets. The method also includes determining a first difference between the first SNR average and the second SNR average. In response to determining that the first difference exceeds an SNR threshold, the method includes determining that a first channel event has occurred in the one or more packets at least within the first symbol set and the second symbol set and in response to determining that the first channel event has occurred, determining is to remain at the first data rate or at a second data rate that is higher than the first data rate.

Abstract translation: 一种方法包括确定一个或多个分组中的至少一个或多个第一符号的第一符号集合的第一信噪比（SNR）平均值。 该方法包括确定一个或多个分组中的至少一个或多个第二符号的第二符号集合的第二SNR平均值。 该方法还包括确定第一SNR平均值与第二SNR平均值之间的第一差值。 响应于确定第一差异超过SNR阈值，该方法包括确定至少在第一符号集合和第二符号集合内的一个或多个分组中已经发生了第一信道事件，并且响应于确定第一信道事件 发生信道事件，确定保持在高于第一数据速率的第一数据速率或第二数据速率。

公开(公告)号：US20140195637A1

公开(公告)日：2014-07-10

申请号：US13738607

申请日：2013-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： Ehab Tahir ,  John Fraser Chappel ,  Nikolai Kroupetski ,  Vladimir Vidovic ,  Hassan Afkhami ,  Purva R. Rajkotia ,  Manjunath Anandarama Krishnam

IPC: H04L29/06

CPC classification number: H04L65/4069 ,  H04B3/03 ,  H04B3/542 ,  H04B2203/5408 ,  H04L5/0046 ,  H04L5/0064

Abstract: A device may determine adapted physical layer transmission properties based upon characteristics of a packet stream to be transmitted via a communications channel. The physical layer transmission properties may comprise an adapted tone map that is associated with an aggressive physical layer throughput capability for UDP traffic, a conservative physical layer throughput capability for TCP traffic, or a dynamically adjusted physical layer throughput rate for mixed traffic. An indication regarding the adapted tone map may be included in a first message, a portion of a physical layer framing protocol, a physical layer control transmission (such as a frame control symbol), or other transmissions such that the receiving device can derive the adapted tone map without significant added overhead.

Abstract translation: 基于要经由通信信道发送的分组流的特性，设备可以确定适配的物理层传输属性。 物理层传输属性可以包括与用于UDP业务的攻击性物理层吞吐能力，用于TCP业务的保守物理层吞吐能力或用于混合业务的动态调整的物理层吞吐速率相关联的适配音调映射。 关于适配音调映射的指示可以被包括在第一消息，物理层成帧协议的一部分，物理层控制传输（诸如帧控制符号）或其他传输中，使得接收设备可以导出适配 色调图没有显着增加的开销。

公开(公告)号：US20140192851A1

公开(公告)日：2014-07-10

申请号：US13738594

申请日：2013-01-10

Applicant: QUALCOMM INCORPORATED

Inventor： Ehab Tahir ,  Nikolai Kroupetski ,  John Fraser Chappel ,  Brian James Langlais ,  Joubin Karimi ,  Richard D. Roze ,  Son Binh Cam

IPC: H04L27/34

CPC classification number: H04L1/0001 ,  H04L25/02

Abstract: A transmitting device may determine a physical layer transmission properties based upon an amount of data to transmit via a communications channel. The physical layer transmission properties may comprise a derated tone map that has a lower physical layer transmission throughput capability than an original tone map. An indication regarding the derated tone map may be included in a first message, a portion of a physical layer framing protocol, a physical layer control transmission (such as a frame control symbol), or other transmissions such that the receiving device can derive the derated tone map without significant added overhead.

Abstract translation: 发送设备可以基于经由通信信道发送的数据量来确定物理层传输属性。 物理层传输属性可以包括具有比原始色调图更低的物理层传输吞吐能力的降额色调映射。 关于降额音调映射的指示可以包括在第一消息，物理层成帧协议的一部分，物理层控制传输（诸如帧控制符号）或其他传输中，使得接收设备可以导出降额 色调图没有显着增加的开销。

公开(公告)号：US10070454B2

公开(公告)日：2018-09-04

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: H04B7/04 ,  H04L1/00 ,  H04W72/12 ,  H04W72/10 ,  H04B7/0452 ,  H04B7/06 ,  H04W72/04 ,  H04L5/00

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.

公开(公告)号：US20170295516A1

公开(公告)日：2017-10-12

申请号：US15094677

申请日：2016-04-08

Applicant: QUALCOMM Incorporated

Inventor： Qinghai Gao ,  Nathaniel David Houghton ,  Ehab Tahir

IPC: H04W28/06 ,  H04W24/04

CPC classification number: H04W28/065 ,  H04L1/1848 ,  H04L47/27 ,  H04L47/34 ,  H04W24/04 ,  H04W28/0242 ,  H04W84/12

Abstract: Methods, systems, and devices for wireless communication are described. A device may identify an indication of a station load in a wireless local area network (WLAN) and estimate a delay to fill a packet hole at the medium access control (MAC) layer based on the station load. The estimated time period may be used to adjust a reorder timeout value. In some cases the reorder timeout value may be increased when the station load is high to reduce the likelihood that packet holes will be flushed to higher layers before the device is served with the missing packets. In some cases, the station load may be determined based on a message received from a serving access point (AP).

公开(公告)号：US09590707B1

公开(公告)日：2017-03-07

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: H04K1/10 ,  H04L27/28 ,  H04B7/04 ,  H04L5/00 ,  H04W16/28

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：US20160241681A1

公开(公告)日：2016-08-18

申请号：US14622089

申请日：2015-02-13

Applicant: QUALCOMM Incorporated

Inventor： Ehab Tahir

IPC: H04L29/06

CPC classification number: H04L69/22 ,  H04L7/00 ,  H04L67/12 ,  H04L69/26 ,  H04L69/322 ,  H04L69/323

Abstract: Described herein is a system and method for enhanced channel access in existing communication networks. The system comprising: a first enhanced node comprising a first processor, the first processor configured to: transmit a legacy frame header of a physical layer protocol data unit (PPDU), the legacy frame header comprising an indicator indicating that sub-PPDUs will be transmitted during a duration associated with transmission of a legacy PPDU; a second enhanced node comprising a second processor configured to receive the legacy frame header; and a third enhanced node comprising a third processor configured to receive the legacy frame header.

Abstract translation: 这里描述了用于在现有通信网络中增强信道接入的系统和方法。 该系统包括：包括第一处理器的第一增强节点，所述第一处理器被配置为：传输物理层协议数据单元（PPDU）的传统帧头，所述传统帧头包括指示子PPDU将被发送的指示符 在与传统PPDU的传输相关联的持续时间内; 第二增强节点，包括被配置为接收所述传统帧头的第二处理器; 以及第三增强节点，包括被配置为接收所述传统帧头的第三处理器。

公开(公告)号：US20150138999A1

公开(公告)日：2015-05-21

申请号：US14085527

申请日：2013-11-20

Applicant: QUALCOMM Incorporated

Inventor： Arun Avudainayagam ,  Ehab Tahir

IPC: H04L1/16 ,  H04L1/00

CPC classification number: H04L1/1607 ,  H04L1/0042 ,  H04L1/005 ,  H04L1/1614 ,  H04L1/1628 ,  H04L1/1812 ,  H04L1/1848 ,  H04L1/1854 ,  H04L5/0007 ,  H04L12/413 ,  H04L27/2646

Abstract: A response interframe space (RIFS) time period may be adapted in a communication system. The RIFS time period may be determined based, at least in part, on a processing time used by a receiving device to process a received physical layer transmission from a transmitting device. The RIFS may be optimized in consideration of channel conditions for a particular communications channel, capabilities of a receiving device, and/or characteristics of a particular physical layer transmission. For example, the RIFS may be dependent on characteristics of a final transmission symbol used to transmit a physical layer transmission. The RIFS may depend on a processing time associated with decoding forward error correction (FEC) encoded blocks that end in the final transmission symbol. The RIFS may depend on a quantity of decoding iterations in a communication system that uses iterative decoding of FEC encoded blocks.

Abstract translation: 可以在通信系统中调整响应帧间间隔（RIFS）时间段。 可以至少部分地基于接收设备用于处理来自发送设备的接收的物理层传输所使用的处理时间来确定RIFS时间段。 可以考虑到特定通信信道的信道条件，接收设备的能力和/或特定物理层传输的特性来优化RIFS。 例如，RIFS可以依赖于用于发送物理层传输的最终传输符号的特性。 RIFS可以取决于与解码在最终传输符号中结束的前向纠错（FEC）编码块相关联的处理时间。 RIFS可以依赖于使用FEC编码块的迭代解码的通信系统中的解码迭代量。

公开(公告)号：US20150117229A1

公开(公告)日：2015-04-30

申请号：US14063931

申请日：2013-10-25

Applicant: QUALCOMM Incorporated

Inventor： Arun Avudainayagam ,  Treina Cresse ,  Manjunath Anandarama Krishnam ,  Ehab Tahir

IPC: H04L5/00 ,  H04B3/54 ,  H04L12/26 ,  H04B3/46

CPC classification number: H04L5/0048 ,  H04B3/46 ,  H04B3/542 ,  H04B3/544 ,  H04B2203/5408 ,  H04B2203/5445 ,  H04B2203/5466 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/004 ,  H04L5/0046 ,  H04L5/0094 ,  H04L25/0204 ,  H04L25/022 ,  H04L25/0228 ,  H04L43/16

Abstract: A network device may be configured to iteratively modify an initial tone map for each communication region of a powerline cycle to minimize the time before application data can be transmitted. A first network device estimates an initial tone map for each communication region based, at least in part, on sounding messages received from a second network device. The first network device determines whether to estimate a modified tone map for the first communication region based on at least one performance measurement associated with a data packet generated using the initial tone map for the first communication region. If so, the second network device retransmits the sounding messages in the first communication region that will be used to modify the initial tone map for the first communication region, and the second network device continues to transmit the data packets using the initial tone maps in the remaining communication regions.

Abstract translation: 网络设备可以被配置为迭代地修改电力线周期的每个通信区域的初始色调图，以最小化应用数据可以被发送之前的时间。 至少部分地，基于从第二网络设备接收的探测消息，第一网络设备估计每个通信区域的初始色调映射。 第一网络设备基于与使用第一通信区域的初始色调映射生成的数据分组相关联的至少一个性能测量来确定是否估计用于第一通信区域的修改的色调映射。 如果是，则第二网络设备重发第一通信区域中将用于修改第一通信区域的初始色调映射的探测消息，并且第二网络设备继续使用第一通信区域中的初始色调映射来发送数据包 剩余通信地区。

公开(公告)号：US20140211640A1

公开(公告)日：2014-07-31

申请号：US13752223

申请日：2013-01-28

Applicant: QUALCOMM INCORPORATED

Inventor： Ehab Tahir ,  Anthony Cowan ,  John Fraser Chappel

IPC: H04L12/413

CPC classification number: H04L12/413 ,  H04W24/10 ,  H04W74/0841

Abstract: A transmission frame is communicated to cause a media idle measurement period on a contention based communication media. The media idle measurement period (i.e., “quiet period”) provides a period of inactivity on the communications medium that may be used to detect for the presence of foreign signals such as radio broadcast interference, noise, or other signals, or may be used for calibration of circuitry coupled to the communications medium. Idle measurement periods may be caused regularly (e.g., periodically). The transmission frame may include an explicit instruction for the media idle measurement period or may cause the media idle measurement period by simulating a collision on the communications media.

Abstract translation: 通信传送帧以在基于竞争的通信媒体上引起媒体空闲测量周期。 媒体空闲测量周期（即，“静默时段”）在通信介质上提供了可用于检测诸如无线电广播干扰，噪声或其他信号之类的外来信号的存在的一段不活动状态，或者可以使用 用于校准耦合到通信介质的电路。 可能会定期（例如周期性地）引起空闲测量周期。 传输帧可以包括用于媒体空闲测量周期的显式指令，或者可以通过模拟通信介质上的冲突来引起媒体空闲测量周期。