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。

公开(公告)号：US20160142176A1

公开(公告)日：2016-05-19

申请号：US14542461

申请日：2014-11-14

Applicant: QUALCOMM INCORPORATED

Inventor： Qinghai Gao ,  Xialong Huang ,  Vincent Knowles Jones, IV ,  Srinivas Katar ,  James Simon Cho

IPC: H04L1/00 ,  H04L1/16 ,  H04L12/26 ,  H04W24/08

CPC classification number: H04L1/0003 ,  H04L1/0001 ,  H04L1/0005 ,  H04L1/1621 ,  H04L43/0847 ,  H04W24/08

Abstract: Methods, apparatus, and computer-readable media for wireless communication by an access point (AP) may involve communicating with a station using a first modulation and coding scheme (MCS). An under-utilization of a medium access control (MAC) protocol data unit (MPDU) aggregation of the station while using the first MCS may be identified. The under-utilization may be caused by packet error rate (PER)-induced head of line (HOL) blocking. The MCS may be switched to a second MCS that is lower than the first MCS.

Abstract translation: 用于由接入点（AP）进行无线通信的方法，装置和计算机可读介质可以涉及使用第一调制和编码方案（MCS）与站通信。 可以识别在使用第一MCS时站的媒体访问控制（MAC）协议数据单元（MPDU）聚合的不充分利用。 利用不足可能是由分组错误率（PER）引起的线路头（HOL）阻塞引起的。 MCS可以切换到低于第一MCS的第二MCS。

公开(公告)号：US20160014047A1

公开(公告)日：2016-01-14

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

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：US09148385B2

公开(公告)日：2015-09-29

申请号：US13917394

申请日：2013-06-13

Applicant: QUALCOMM Incorporated

Inventor： Lawrence Winston Yonge, III ,  Srinivas Katar ,  Manjunath Anandarama Krishnam

IPC: H04L12/915 ,  H04L12/28 ,  H04L12/721 ,  H04L12/727 ,  H04L12/733 ,  H04L12/729 ,  H04L12/761 ,  H04L12/413 ,  H04L12/44

CPC classification number: H04L47/787 ,  H04B2203/5445 ,  H04L12/2801 ,  H04L12/2856 ,  H04L12/413 ,  H04L12/44 ,  H04L45/12 ,  H04L45/121 ,  H04L45/122 ,  H04L45/123 ,  H04L45/125 ,  H04L45/16

Abstract: Communicating among stations in a network includes, from each of multiple stations in the network, transmitting information indicating which other stations from which that station is able to reliably receive transmissions. A schedule for communicating among the stations is determined based on the information from the stations and transmitting the schedule over the network. The schedule includes a plurality of time slots during which respective contention groups of stations are assigned to communicate using a contention-based protocol.

Abstract translation: 在网络中的站间通信包括从网络中的多个站中的每一个发送指示哪个站能够可靠地接收传输的哪些站。 基于来自站的信息并通过网络发送调度来确定站间通信的时间表。 该调度包括多个时隙，在该时隙期间，各个竞争组被分配以使用基于争用的协议进行通信。

公开(公告)号：US09025527B2

公开(公告)日：2015-05-05

申请号：US13713672

申请日：2012-12-13

Applicant: QUALCOMM Incorporated

Inventor： Hao Zhu ,  Srinivas Katar ,  Lawrence W. Yonge, III

IPC: H04W4/00 ,  H04B3/54 ,  H04L5/00 ,  H04W16/14 ,  H04W74/08

CPC classification number: H04L5/00 ,  H04B3/542 ,  H04B2203/5495 ,  H04L5/006 ,  H04W16/14 ,  H04W74/0808

Abstract: A feature-capable device that supports channel reuse and is part of a local network can determine whether to reuse or share a communication channel with a neighbor network when the local network and/or the neighbor network include at least one legacy device that does not support adaptive channel reuse. The feature-capable device can determine channel performance measurements associated with each legacy device in the local network and/or in the neighbor network. The feature-capable device can compare the channel performance measurements against corresponding performance thresholds. The local network and the neighbor network can reuse the channel if the channel performance measurements associated with each of the legacy devices meet the corresponding performance thresholds. The local network and the neighbor network can share the channel if the channel performance measurements of at least one of the legacy devices does not meet the corresponding performance thresholds.

Abstract translation: 当本地网络和/或邻居网络包括至少一个不支持的传统设备时，支持信道重用并且是本地网络的一部分的特征能力设备可以确定是否重新使用或与邻居网络共享通信信道 自适应信道重用。 具有功能的设备可以确定与本地网络和/或邻近网络中的每个传统设备相关联的信道性能测量。 功能特性的设备可以将通道性能测量与相应的性能阈值进行比较。 如果与每个传统设备相关联的信道性能测量符合相应的性能阈值，则本地网络和邻居网络可以重用该信道。 如果至少一个传统设备的信道性能测量不符合相应的性能阈值，则本地网络和邻居网络可以共享信道。

公开(公告)号：US20150092545A1

公开(公告)日：2015-04-02

申请号：US14502662

申请日：2014-09-30

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Katar ,  Arun Avudainayagam ,  James Gerard Zyren

IPC: H04L12/805 ,  H04B3/54

CPC classification number: H04L47/365 ,  H04B3/542 ,  H04B3/546 ,  H04B2203/5408 ,  H04L1/0078

Abstract: A network device may transmit a short packet when the length of application data that will be transmitted does not exceed a threshold length. In some embodiments, the network device may transmit the application data in a frame control field of the short packet. The short packet may not include a payload field. In other embodiments, the network device may support multiple short payload field lengths and may transmit the application data in a short payload field with an appropriate short payload field length. The network device may also support communication techniques to transmit the application data in the short packet.

Abstract translation: 当要发送的应用数据的长度不超过阈值长度时，网络设备可以发送短分组。 在一些实施例中，网络设备可以在短分组的帧控制字段中发送应用数据。 短分组可能不包括有效载荷字段。 在其他实施例中，网络设备可以支持多个短有效载荷字段长度，并且可以在具有适当的短有效载荷字段长度的短有效载荷字段中发送应用数据。 网络设备还可以支持在短分组中传送应用数据的通信技术。

公开(公告)号：US20150063370A1

公开(公告)日：2015-03-05

申请号：US14015518

申请日：2013-08-30

Applicant: QUALCOMM Incorporated

Inventor： Rouhana Rouhana ,  Hassan Kaywan Afkhami ,  Srinivas Katar

IPC: H04L12/911 ,  H04L12/801

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.

Abstract translation: 主网络设备确定将数据从主网络设备传送到网络的多个客户端网络设备。 在一个示例中，主网络设备可以生成包括具有多个符号的有效载荷的数据帧。 有效载荷可以包括为每个客户端网络设备分配的至少一个符号。 多个符号可以以有效载荷中的预定义模式布置。 在另一示例中，主网络设备可以生成包括具有一个或多个符号的有效载荷的数据帧。 每个符号可以包括多个频率载波，并且可以包括为每个客户端网络设备分配的至少一个频率载波。 可以根据划分模式将多个频率载波分配给客户端网络设备。 主网络设备然后将数据帧发送到客户端网络设备。

公开(公告)号：US12069026B2

公开(公告)日：2024-08-20

申请号：US17808105

申请日：2022-06-21

Applicant: QUALCOMM Incorporated

Inventor： Ramanathan Subramanian ,  Jain Roy Ambi ,  Srinivas Katar

IPC: H04L9/40

CPC classification number: H04L63/0227 ,  H04L63/12 ,  H04L63/1458

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, to mitigate a denial of service attack to a power line communication (PLC) network. A first node of the PLC network may activate a countermeasure that enables the PLC network (including the first node and a second node) to continue to communicate when one or more transmissions associated with a denial of service attack are injected onto the communication medium. This disclosure includes several techniques to detect a denial of service attack and several countermeasures that may be implemented. For example, a countermeasure may include the use of a custom preamble or a custom priority resolution symbol that is specific to the PLC network. The first node and the second node may disregard transmissions that do not conform to the custom preamble or custom priority resolution symbol.