公开(公告)号：US09247567B2

公开(公告)日：2016-01-26

申请号：US12790427

申请日：2010-05-28

申请人： Avinash Jain ,  Hemanth Sampath ,  Mohammad H. Taghavi Nasrabadi ,  Santosh P. Abraham

发明人： Avinash Jain ,  Hemanth Sampath ,  Mohammad H. Taghavi Nasrabadi ,  Santosh P. Abraham

IPC分类号： H04B7/00 ,  H04W74/08 ,  H04W16/28 ,  H04W84/18

CPC分类号： H04W74/0808 ,  H04W16/28 ,  H04W84/18

摘要： A method of facilitating a silence period in a directional communication network is provided. The method may comprise initiating, by a first apparatus, a listening period mode, wherein the listening period mode comprises ceasing at least a portion of current communication and configuring the first apparatus to receive a request to initiate a new communication, determining whether a request is received during a time period in the listening period mode, and transmitting a response if the request to initiate the new communication is received during the time period in the listening period mode.

摘要翻译： 提供一种促进定向通信网络中的静默期的方法。 该方法可以包括由第一设备发起监听周期模式，其中监听周期模式包括停止当前通信的至少一部分并且配置第一设备以接收发起新通信的请求，确定请求是否是 在收听期间模式期间的一段时间内接收到响应，并且如果在收听期间模式的时间段期间接收到发起新通信的请求，则发送响应。

公开(公告)号：US08385288B2

公开(公告)日：2013-02-26

申请号：US12543840

申请日：2009-08-19

申请人： Vinay Sridhara ,  Santosh P. Abraham ,  Hemanth Sampath ,  Vincent Knowles Jones, IV

发明人： Vinay Sridhara ,  Santosh P. Abraham ,  Hemanth Sampath ,  Vincent Knowles Jones, IV

IPC分类号： H04W4/00

CPC分类号： H04W72/12 ,  H04W72/1284 ,  H04W74/04

摘要： Certain embodiments provide a method for scheduling packet transmissions in a multi-channel wireless communications system. The method generally includes requesting, from a plurality of wireless network nodes, an identification of channels available for communicating with the wireless network nodes, receiving an identification of channels available for communicating with the wireless network nodes, determining a schedule for packet transmission for the wireless network nodes based on the identification of channels, and communicating the schedule to the wireless network nodes.

摘要翻译： 某些实施例提供了一种用于在多信道无线通信系统中调度分组传输的方法。 该方法通常包括从多个无线网络节点请求可用于与无线网络节点进行通信的信道的标识，接收可用于与无线网络节点通信的信道的标识，确定用于无线网络的分组传输的调度 基于信道识别的网络节点，并将调度传递给无线网络节点。

公开(公告)号：US20110122849A1

公开(公告)日：2011-05-26

申请号：US12790427

申请日：2010-05-28

申请人： Avinash Jain ,  Hemanth Sampath ,  Mohammad H. Taghavi Nasrabadi ,  Santosh P. Abraham

发明人： Avinash Jain ,  Hemanth Sampath ,  Mohammad H. Taghavi Nasrabadi ,  Santosh P. Abraham

IPC分类号： H04J3/00

CPC分类号： H04W74/0808 ,  H04W16/28 ,  H04W84/18

摘要： A method of facilitating a silence period in a directional communication network is provided. The method may comprise initiating, by a first apparatus, a listening period mode, wherein the listening period mode comprises ceasing at least a portion of current communication and configuring the first apparatus to receive a request to initiate a new communication, determining whether a request is received during a time period in the listening period mode, and transmitting a response if the request to initiate the new communication is received during the time period in the listening period mode.

摘要翻译： 提供一种促进定向通信网络中的静默期的方法。 该方法可以包括由第一设备发起监听周期模式，其中监听周期模式包括停止当前通信的至少一部分并且配置第一设备以接收发起新通信的请求，确定请求是否是 在收听期间模式期间的一段时间内接收到响应，并且如果在收听期间模式的时间段期间接收到发起新通信的请求，则发送响应。

公开(公告)号：US20110122805A1

公开(公告)日：2011-05-26

申请号：US12780690

申请日：2010-05-14

申请人： Santosh P. Abraham ,  Simone Merlin ,  Maarten Menzo Wentink ,  Hemanth Sampath

发明人： Santosh P. Abraham ,  Simone Merlin ,  Maarten Menzo Wentink ,  Hemanth Sampath

IPC分类号： H04W72/04 ,  H04H20/71

CPC分类号： H04W72/0486 ,  H04W72/046 ,  H04W72/1215 ,  H04W72/1289 ,  Y10T70/8432

摘要： A method for wireless communications is disclosed that includes receiving a plurality of requests to transmit data from a plurality of apparatuses; determining resource allocation for a set of apparatuses in the plurality of apparatuses, wherein the determination is based on the plurality of requests; and transmitting a message comprising the resource allocation to the set of apparatuses to permit data transmission. Another method for wireless communications is disclosed that includes contending for access to a medium based on a request, by an apparatus, with a plurality of other apparatuses; receiving a message, the message comprising a resource allocation based on requests from the apparatus and the other apparatuses, wherein the resource allocation permits data transmission from the apparatus and some of the other apparatuses; and transmitting data by the apparatus based on the message. Apparatuses for performing the methods are also disclosed.

摘要翻译： 公开了一种用于无线通信的方法，包括从多个装置接收多个发送数据的请求; 确定所述多个装置中的一组装置的资源分配，其中所述确定基于所述多个请求; 以及将包括所述资源分配的消息发送到所述一组设备以允许数据传输。 公开了另一种用于无线通信的方法，其包括：通过设备与多个其他设备竞争基于请求访问介质; 接收消息，所述消息包括基于来自所述装置和其他装置的请求的资源分配，其中所述资源分配允许从所述装置和所述其他装置中的一些装置进行数据传输; 以及基于所述消息由所述装置发送数据。 还公开了用于执行该方法的装置。

公开(公告)号：US20110103319A1

公开(公告)日：2011-05-05

申请号：US12649426

申请日：2009-12-30

申请人： Santosh P. Abraham ,  Hemanth Sampath

发明人： Santosh P. Abraham ,  Hemanth Sampath

IPC分类号： H04W4/00

CPC分类号： H04W74/06 ,  H04W52/0222 ,  H04W72/12 ,  H04W72/1289 ,  H04W74/02 ,  H04W74/0816 ,  H04W76/14 ,  Y02D70/12 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/21 ,  Y02D70/22

摘要： Certain aspects of the present disclosure relate to a technique for scheduling multiple peer-to-peer communications in a wireless network using an access point (AP). The existing power management framework for AP-based communications is utilized to achieve AP-based scheduling of peer-to-peer communications.

摘要翻译： 本公开的某些方面涉及一种用于使用接入点（AP）在无线网络中调度多个对等通信的技术。 用于基于AP的通信的现有功率管理框架被用于实现基于AP的对等通信调度。

公开(公告)号：US09184810B2

公开(公告)日：2015-11-10

申请号：US13465522

申请日：2012-05-07

申请人： Zhi Quan ,  Simone Merlin ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

发明人： Zhi Quan ,  Simone Merlin ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath

IPC分类号： H04W4/00 ,  H04B7/04 ,  H04W72/12

CPC分类号： H04B7/0452 ,  H04W72/12 ,  H04W72/1221

摘要： A method is provided for wirelessly transmitting from a transmitter to one or more receivers within a multi-user (MU) multiple-input and multiple-output (MIMO) communication system. A number of concurrent (spatial) streams are dynamically allocated in a MU-MIMO transmission to each of a plurality of served receivers to maximize total data transmitted on each transmission. Streams are allocated according to a corresponding transmission queue length for each receiver and the number of receive antennas used by each of the served receivers. A transmission timer is started upon sending the transmission. A random backoff counter is also started upon one of either: (a) expiration of the transmission timer or (b) receipt of data at a transmission queue. A new transmission is sent upon expiration of the random backoff counter if the transmission timer has expired. Otherwise, the random backoff counter is restarted one or more times until the transmission timer has expired.

摘要翻译： 提供了一种用于从多用户（MU）多输入（MIMO）通信系统中的发射机向一个或多个接收机进行无线发射的方法。 在MU-MIMO传输中动态地将多个并行（空间）流分配给多个服务接收机中的每一个，以最大化在每个传输上传输的总数据。 流根据每个接收机的相应传输队列长度和每个被服务接收机使用的接收天线的数量来分配。 传送定时器在发送传输时开始。 以下之一也开始随机退避计数器：（a）传输定时器到期或（b）在传输队列处接收数据。 如果发送定时器已经到期，则在随机退避计数器到期时发送新的传输。 否则，随机退避计数器重新启动一次或多次，直到传输定时器到期。

公开(公告)号：US08923219B2

公开(公告)日：2014-12-30

申请号：US12958959

申请日：2010-12-02

申请人： Gregory A. Breit ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Vincent Knowles Jones

发明人： Gregory A. Breit ,  Santosh Paul Abraham ,  Sameer Vermani ,  Hemanth Sampath ,  Vincent Knowles Jones

IPC分类号： H04W4/00 ,  H04L1/00 ,  H04B7/06 ,  H04L25/02 ,  H04L25/03 ,  H04L5/00

CPC分类号： H04L25/03343 ,  H04B7/0626 ,  H04B7/0658 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/003 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0222 ,  H04L25/0228 ,  H04L2025/03426 ,  H04L2025/03777

摘要： Certain aspects of the present disclosure relate to techniques for achieving adaptive channel state information (CSI) feedback rate in multi-user communication systems. A rate by which CSI feedback can be transmitted from each user station of a wireless system to a serving access point may be adjusted based on evolution of a channel between that user station and the access point.

摘要翻译： 本公开的某些方面涉及用于在多用户通信系统中实现自适应信道状态信息（CSI）反馈速率的技术。 基于无线系统的每个用户站向服务接入点发送CSI反馈的速率可以基于该用户站与接入点之间的信道的演进来调整。

公开(公告)号：US08908600B2

公开(公告)日：2014-12-09

申请号：US13280776

申请日：2011-10-25

申请人： Hemanth Sampath ,  Didier Johannes Richard Van Nee ,  Sameer Vermani ,  Albert Van Zelst ,  Vincent Knowles Jones

发明人： Hemanth Sampath ,  Didier Johannes Richard Van Nee ,  Sameer Vermani ,  Albert Van Zelst ,  Vincent Knowles Jones

IPC分类号： H04L12/28 ,  H04J1/16 ,  G06F11/00 ,  G01R31/08

CPC分类号： H04B7/0626 ,  H04B7/0632

摘要： Certain aspects of the present disclosure provide techniques and apparatus for generating a unified format of channel state information (CSI) feedback for Very High Throughput (VHT) wireless systems. One example method generally includes generating, at a first apparatus, a frame comprising information relating to SNR if a second apparatus is communicating with the first apparatus using single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO) and transmitting a signal based on the generated frame to the second apparatus. Another example method generally includes generating, at an apparatus, a structure comprising CSI, wherein the CSI includes one of a first matrix with estimates of a channel associated with the apparatus or a second matrix obtained based on singular value decomposition (SVD) of the first matrix and wherein the structure further comprises an indication of which of the first and second matrices is included in the CSI; and transmitting the structure over the channel.

摘要翻译： 本公开的某些方面提供用于为非常高吞吐量（VHT）无线系统生成统一格式的信道状态信息（CSI）反馈的技术和装置。 一个示例性方法通常包括在第一装置处产生包括与SNR有关的信息的帧，如果第二装置使用单用户MIMO（SU-MIMO）或多用户MIMO（MU-MIMO）和第一装置正在与第一装置进行通信，则 基于所生成的帧向第二装置发送信号。 另一示例性方法通常包括在装置处生成包括CSI的结构，其中CSI包括具有与该装置相关联的信道的估计的第一矩阵之一或基于第一矩阵的奇异值分解（SVD）获得的第二矩阵 矩阵，并且其中所述结构还包括所述CSI中包括所述第一和第二矩阵中的哪一个的指示; 并通过信道发送结构。

公开(公告)号：US08761316B2

公开(公告)日：2014-06-24

申请号：US12406868

申请日：2009-03-18

申请人： Raghu N. Challa ,  Hemanth Sampath ,  Sameer Vermani

发明人： Raghu N. Challa ,  Hemanth Sampath ,  Sameer Vermani

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04L1/0052

摘要： Systems and methods for computing log likelihood ratios in a communication system are described. A demodulated symbol may be received. A set of scalars may be determined based on a modulation order, a signal-to-noise ratio for the symbol, and a bit of the symbol. At least one log likelihood ratio for the bit may be approximated using a piecewise linear process based on the scalars and the symbol.

摘要翻译： 描述用于计算通信系统中的对数似然比的系统和方法。 可以接收解调的符号。 可以基于调制阶数，符号的信噪比和符号的位来确定一组标量。 可以使用基于标量和符号的分段线性处理来近似该比特的至少一个对数似然比。

公开(公告)号：US08625690B2

公开(公告)日：2014-01-07

申请号：US13410633

申请日：2012-03-02

申请人： Mohammad Hossein Taghavi Nasrabadi ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

发明人： Mohammad Hossein Taghavi Nasrabadi ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC分类号： H04K1/10

CPC分类号： H04L27/2647 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2628

摘要： Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.

摘要翻译： 用于无线通信的系统，方法和设备。 一方面，提供一种无线通信装置。 该装置包括被配置为接收包括分组的无线信号的接收机。 无线信号的至少一部分被配置为在低于或等于1.25MHz的带宽上接收。 分组由包括三十二个音调的至少一个正交频分复用（OFDM）符号形成。 32个音调对应于带宽内的频率子载波。 至少一个OFDM符号的三十二个音调被分配为：二十四个数据音调，两个导频音调，五个保护音调和一个直流（DC）音调。 该装置包括被配置为评估无线信号的处理器。 处理器包括变换模块，其被配置为使用三十二点模式将至少一个OFDM符号转换成频域信号。