公开(公告)号：US20110306375A1

公开(公告)日：2011-12-15

申请号：US12796683

申请日：2010-06-09

申请人： Ranveer Chandra ,  Thomas Moscibroda ,  Xiaohui Wang

发明人： Ranveer Chandra ,  Thomas Moscibroda ,  Xiaohui Wang

IPC分类号： H04W72/04 ,  H04B7/212

CPC分类号： H04W24/00 ,  H04B2201/692 ,  H04J11/0056 ,  H04L5/0007 ,  H04L27/0006 ,  H04W72/00 ,  H04W72/0453 ,  H04W72/048

摘要： There is provided a computer-implemented method for transmitting data over a wireless network using white spaces. A first white space transmission channel is determined for communicating with mobile client devices. Wireless communication takes place with the mobile client devices over the first white space transmission channel. If the first white space transmission channel becomes unavailable to one of the mobile client devices because of the presence of a primary user on the first white space transmission channel, a different white space transmission channel is determined for communicating with the mobile client device that is affected. The first white space transmission channel may become unavailable to the affected mobile client device, for example, because a primary user begins using the first white space transmission channel in proximity to the affected device. The primary user may be a wireless microphone. Thereafter, communication with the affected wireless device takes place on the different white space transmission channel, while unaffected devices continue to communicate on the first white space transmission channel. Also provided are an exemplary wireless base station and an exemplary mobile client device.

摘要翻译： 提供了一种用于通过无线网络使用空格来发送数据的计算机实现的方法。 确定用于与移动客户端设备通信的第一空白传输信道。 移动客户端设备通过第一个空白传输信道进行无线通信。 如果第一空白传输信道由于第一空白传输信道上的主用户的存在而变得不能用于移动客户端设备之一，则确定不同的空白传输信道用于与受影响的移动客户端设备进行通信 。 受影响的移动客户端设备的第一个空白传输信道可能变得不可用，例如，因为主用户开始在受影响的设备附近使用第一个空白传输信道。 主要用户可以是无线麦克风。 此后，与受影响的无线设备的通信发生在不同的空白传输信道上，而未受影响的设备在第一空白传输信道上继续通信。 还提供了示例性无线基站和示例性移动客户端设备。

公开(公告)号：US20110271345A1

公开(公告)日：2011-11-03

申请号：US13179338

申请日：2011-07-08

申请人： Alastair Wolman ,  Brian D. Zill ,  Jitendra D. Padhye ,  Ranveer Chandra ,  Paramvir Bahl ,  Manpreet Singh ,  Lenin Ravindranath Sivalingam

发明人： Alastair Wolman ,  Brian D. Zill ,  Jitendra D. Padhye ,  Ranveer Chandra ,  Paramvir Bahl ,  Manpreet Singh ,  Lenin Ravindranath Sivalingam

IPC分类号： G06F21/00

CPC分类号： H04W12/12 ,  H04L63/1408 ,  H04W88/08

摘要： A method to determine if a rogue device is connected to a specific wired network from dynamic host control protocol (DHCP) requests on the wired network. These DHCP requests are analyzed to determine the type of device issuing the request. Once the type of device has been determined, it can be checked against a list of authorized device types. If the device issuing the DHCP request is not an authorized device type, then it can be determined that the suspect device is a rogue that is connected to the specific wired network. Additionally, even if the system of the present invention determines that it is an authorized device type, if the device is not one of the few authorized devices of this type, e.g. because its MAC address is not recognized as that of one of the authorized devices, the system can flag the suspect as a rogue.

摘要翻译： 一种确定流氓设备是否从有线网络上的动态主机控制协议（DHCP）请求连接到特定有线网络的方法。 分析这些DHCP请求以确定发出请求的设备的类型。 一旦确定了设备类型，就可以根据授权的设备类型列表进行检查。 如果发出DHCP请求的设备不是授权设备类型，则可以确定可疑设备是连接到特定有线网络的流氓。 另外，即使本发明的系统确定它是授权设备类型，如果该设备不是这种类型的少数授权设备之一，例如， 由于其MAC地址不被识别为其中一个授权设备的MAC地址，系统可以将嫌疑犯标记为流氓。

公开(公告)号：US20110211517A1

公开(公告)日：2011-09-01

申请号：US12714360

申请日：2010-02-26

申请人： Thomas Moscibroda ,  Vishnu Navda ,  Ramachandran Ramjee ,  Sandeep P. Karanth ,  Lenin Ravindranath Sivalingam ,  Jitendra D. Padhye ,  Ranveer Chandra

发明人： Thomas Moscibroda ,  Vishnu Navda ,  Ramachandran Ramjee ,  Sandeep P. Karanth ,  Lenin Ravindranath Sivalingam ,  Jitendra D. Padhye ,  Ranveer Chandra

IPC分类号： H04H20/71 ,  H03M13/05 ,  G06F11/10 ,  H04W8/00

CPC分类号： H04H20/63 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/16 ,  H04L1/1854 ,  H04L2001/0093 ,  H04W8/186 ,  H04W48/20 ,  H04W76/40

摘要： A “Wi-Fi Multicaster” provides a practical and efficient Wi-Fi multicast system for environments having potentially large numbers of Wi-Fi clients. Significantly, the Wi-Fi Multicaster does not require any changes to the 802.11 protocol, or to the underlying Wi-Fi infrastructure. In various embodiments, the Wi-Fi Multicaster uses pseudo-broadcast, and augments it with destination control, association control and optional proactive FEC (forward error correction) to improve multicast performance. More specifically, the Wi-Fi Multicaster system converts multicast packets to targeted unicast transmissions. To minimize the amount of airtime consumed, the Wi-Fi Multicaster uses destination control in combination with various algorithms for association control. Further, in various embodiments, the Wi-Fi Multicaster includes an adaptive, proactive FEC scheme to reduce overall packet losses. Finally, to overcome the challenges posed by encryption protocols such as 802.1x, the Wi-Fi Multicaster uses a “virtual multicast interface” that allows clients to “share” a common key for each multicast.

摘要翻译： “Wi-Fi Multicaster”为具有潜在大量Wi-Fi客户端的环境提供了实用且高效的Wi-Fi组播系统。 重要的是，Wi-Fi Multicaster不需要对802.11协议或底层Wi-Fi基础设施进行任何更改。 在各种实施例中，Wi-Fi Multicaster使用伪广播，并且将其与目的地控制，关联控制和可选的主动FEC（前向纠错）相加以提高多播性能。 更具体地说，Wi-Fi Multicaster系统将多播分组转换为目标单播传输。 为了最大限度地减少消耗的通话时间，Wi-Fi Multicaster将目的地控制与各种算法结合使用，进行关联控制。 此外，在各种实施例中，Wi-Fi多播卡器包括自适应主动FEC方案以减少总体分组丢失。 最后，为了克服802.1x等加密协议带来的挑战，Wi-Fi Multicaster使用“虚拟多播接口”，允许客户端“共享”每个组播的公共密钥。

公开(公告)号：US07876786B2

公开(公告)日：2011-01-25

申请号：US12061577

申请日：2008-04-02

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Thomas Moscibroda ,  Gopala Sri Hari Narlanka ,  Yunnan Wu ,  Yuan Yuan

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Thomas Moscibroda ,  Gopala Sri Hari Narlanka ,  Yunnan Wu ,  Yuan Yuan

IPC分类号： H04J4/00

CPC分类号： H04W72/0446 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0039 ,  H04L5/0066 ,  H04L5/0094 ,  H04W16/14

摘要： Dynamic time-spectrum block allocation for cognitive radio networks is described. In one implementation, without need for a central controller, peer wireless nodes collaboratively sense local utilization of a communication spectrum and collaboratively share white spaces for communication links between the nodes. Sharing local views of the spectrum utilization with each other allows the nodes to dynamically allocate non-overlapping time-frequency blocks to the communication links between the nodes for efficiently utilizing the white spaces. The blocks are sized to optimally pack the available white spaces. The nodes regularly readjust the bandwidth and other parameters of all reserved blocks in response to demand, so that packing of the blocks in available white spaces maintains a fair distribution of the overall bandwidth of the white spaces among active communication links, minimizes finishing time of all communications, reduces contention overhead among the nodes contending for the white spaces, and maintains non-overlapping blocks.

摘要翻译： 描述了认知无线电网络的动态时频块分配。 在一个实现中，不需要中央控制器，对等无线节点协同地感知通信频谱的本地利用，并且协作地共享用于节点之间的通信链路的空白空间。 共享频谱利用率的局部视图允许节点动态地将不重叠的时间频率块分配给节点之间的通信链路，以有效地利用白色空间。 这些块的大小可以最佳地打包可用的空白空间。 节点响应于需求定期重新调整所有保留块的带宽和其他参数，使得可用空白块中的块的打包保持主动通信链路之间白色空间的总带宽的公平分配，最小化所有的完成时间 通信，减少竞争白空间的节点之间的争用开销，并维护不重叠的块。

公开(公告)号：US07640460B2

公开(公告)日：2009-12-29

申请号：US11680477

申请日：2007-02-28

申请人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

发明人： Paramvir Bahl ,  Ranveer Chandra ,  Lun Li ,  David A. Maltz ,  Ming Zhang

IPC分类号： G06F11/00

CPC分类号： H04L41/0681

摘要： Exemplary methods, computer-readable media, and systems for detecting a fault by a packet trace, includes monitoring at least one packet transmitted to or received from, an computing device of an end user, between one or more computing devices implementing at least one of a service or an application on an enterprise network. The process also includes identifying whether an abnormal condition occurred on the computing device of the end user based on monitoring at least one packet transmitted to or received from, the computing device of the end user; and detecting a fault by using an algorithm based on monitoring at least one packet transmitted or received from, the computing device of the end user; wherein the fault indicates a desired course of action did not occur while the computing device of the end user uses at least one of the service or the application in the enterprise network.

摘要翻译： 用于通过分组跟踪检测故障的示例性方法，计算机可读介质和系统包括监视在一个或多个计算设备之间发送到终端用户的计算设备或从终端用户的计算设备接收的至少一个分组，其实现以下中的至少一个： 企业网络上的服务或应用程序。 该过程还包括基于监视终端用户的计算设备发送到或从其接收到的至少一个分组来识别终端用户的计算设备上是否发生异常状况; 以及通过使用基于监视从最终用户的计算设备发送或接收的至少一个分组的算法来检测故障; 其中所述故障指示在所述终端用户的计算设备使用所述企业网络中的所述服务或应用中的至少一个的情况下不发生期望的操作过程。

公开(公告)号：US20090185514A1

公开(公告)日：2009-07-23

申请号：US12018723

申请日：2008-01-23

申请人： Ranveer Chandra ,  Jitendra Padhye ,  Lenin Ravindranath Sivalingam

发明人： Ranveer Chandra ,  Jitendra Padhye ,  Lenin Ravindranath Sivalingam

IPC分类号： H04B7/00

CPC分类号： H04W84/12 ,  H04L12/189 ,  H04W8/186 ,  H04W48/16 ,  H04W72/005

摘要： A method is provided, wherein the method comprises identifying nearby wireless communication access points (APs) to which a client computing environment can cooperate with to communicate and receive data through a subscription to a neighborcast group from indentified nearby cooperating access points such that illustratively the neighborcast group comprises a communications overlay between cooperating client computing environments employing the identified nearby wireless communications access points. In an illustrative implementation, a wireless communications environment comprises at least two client computing environments comprising a communications overlay engine operable to process at least one instruction from an exemplary instruction set to perform one or more wireless communications operations over the exemplary communications overlay comprising scanning for cooperating client computing environments and/or wireless access points and/or RSS servers, subscribing to the communications overlay group, and publishing data for consumption by cooperating components of the wireless communications overlay.

摘要翻译： 提供了一种方法，其中所述方法包括识别客户端计算环境可以与之合作的附近的无线通信接入点（AP），以通过从识别的附近协作接入点订阅邻居组来传送和接收数据，从而说明邻居 组合包括使用所识别的附近的无线通信接入点的合作的客户端计算环境之间的通信覆盖。 在说明性实现中，无线通信环境包括至少两个客户端计算环境，包括通信覆盖引擎，其可操作以处理来自示例性指令集的至少一个指令，以在示例性通信覆盖层上执行一个或多个无线通信操作，包括扫描协作 客户端计算环境和/或无线接入点和/或RSS服务器，订阅通信覆盖组，以及通过协作无线通信覆盖的组件发布用于消费的数据。

公开(公告)号：US20070274324A1

公开(公告)日：2007-11-29

申请号：US11420616

申请日：2006-05-26

申请人： Yunnan Wu ,  Jitendra D. Padhye ,  Ranveer Chandra ,  Venkata N. Padmanabhan ,  Philip A. Chou ,  Mohamed Jawad Khaki

发明人： Yunnan Wu ,  Jitendra D. Padhye ,  Ranveer Chandra ,  Venkata N. Padmanabhan ,  Philip A. Chou ,  Mohamed Jawad Khaki

IPC分类号： H04L12/56

CPC分类号： H04L1/1874 ,  H04L1/0076 ,  H04L67/327 ,  H04W28/06 ,  H04W48/08 ,  H04W84/12

摘要： A local network coding framework and method including techniques to improve efficiency in a wireless network by reducing overhead. The local network coding method includes exchanging data availability between nodes on the wireless network by sending Bloom filters of lists of packets to neighboring nodes. Based on data availability, optimized mixing of pure packets is performed to form mixture packets for output. A separate acknowledgement buffer keeps track of the pure packets transmitted but not acknowledged. If an acknowledgement does not arrive after a certain time period, the packet is assumed to be lost and is retransmitted. An optimized packet mixing process generates mixture packets and decides which nodes to send the mixture packets. The local network coding framework and method also includes methods for representing the composition of a mixture packet and using mixing at a wireless access point to improve the performance of the wireless local area network.

摘要翻译： 本地网络编码框架和方法包括通过减少开销来提高无线网络的效率的技术。 本地网络编码方法包括通过向相邻节点发送分组列表的Bloom过滤器来在无线网络上的节点之间交换数据可用性。 基于数据可用性，执行纯数据包的优化混合，形成混合数据包进行输出。 单独的确认缓冲区跟踪发送但未确认的纯数据包。 如果确认在某个时间段之后未到达，则假定该分组丢失并被重发。 优化的分组混合过程产生混合分组，并决定哪些节点发送混合分组。 本地网络编码框架和方法还包括用于表示混合分组的组合并在无线接入点使用混合来改善无线局域网的性能的方法。

公开(公告)号：US20070242643A1

公开(公告)日：2007-10-18

申请号：US11404639

申请日：2006-04-14

申请人： Ranveer Chandra ,  Jitendra Padhye ,  Alastair Wolman

发明人： Ranveer Chandra ,  Jitendra Padhye ,  Alastair Wolman

IPC分类号： H04Q7/24

CPC分类号： H04H20/61 ,  H04H20/93 ,  H04W4/06 ,  H04W28/065 ,  H04W48/12

摘要： A system and method for using a wireless beacon broadcast to provide a media message is disclosed. A first beacon broadcast is provided from a wireless access point, the first beacon broadcast having a first beacon component with a first portion of media. A second beacon broadcast is provided from the wireless access point, the second beacon broadcast having a second beacon component with a second portion of media. The first portion of media and the second portion of media are combinable to provide a complete media message.

摘要翻译： 公开了一种使用无线信标广播来提供媒体消息的系统和方法。 从无线接入点提供第一信标广播，第一信标广播具有具有媒体的第一部分的第一信标分量。 从无线接入点提供第二信标广播，第二信标广播具有具有媒体的第二部分的第二信标分量。 媒体的第一部分和媒体的第二部分可以组合来提供完整的媒体信息。

公开(公告)号：US20070239876A1

公开(公告)日：2007-10-11

申请号：US11400103

申请日：2006-04-07

申请人： Ranveer Chandra ,  Venkata Padmanabhan ,  Ming Zhang

发明人： Ranveer Chandra ,  Venkata Padmanabhan ,  Ming Zhang

IPC分类号： G06F15/177 ,  G06F15/16

CPC分类号： H04W24/04 ,  H04L61/2015 ,  H04W84/12

摘要： Communication software to aid portable computers monitor, and correct problems accessing a network through a wireless access point. The software controls the exchange of information with other portable computers in the vicinity of the wireless access point. The information exchanged may be used to diagnose problems at the wireless layer, the network layer, the transport layer or the application layer. The information exchanged may provide information about the configuration of computers that successfully or unsuccessfully communicate through the wireless access point. A portable computer receiving this configuration information may compare it to similar information about its own configuration to diagnose problems. Such software may be of particular benefit for portable computers experiencing difficulty connecting to a network at a wireless hot spot.

摘要翻译： 用于辅助便携式计算机的通信软件监视并纠正通过无线接入点访问网络的问题。 软件控制与无线接入点附近的其他便携式计算机的信息交换。 所交换的信息可以用于诊断无线层，网络层，传输层或应用层的问题。 所交换的信息可以提供关于通过无线接入点成功或不成功通信的计算机的配置的信息。 接收该配置信息的便携式计算机可将其与关于其自身配置的类似信息进行比较以诊断问题。 这样的软件对于在无线热点处连接到网络的难易的便携式计算机可能是特别有益的。

公开(公告)号：US09482737B2

公开(公告)日：2016-11-01

申请号：US13341728

申请日：2011-12-30

申请人： Paramvir Bahl ,  Douglas C. Burger ,  Ranveer Chandra ,  Matthew G. Dyor ,  William Gates ,  Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Pablos Holman ,  Jordin T. Kare ,  Royce A. Levien ,  Richard T. Lord ,  Robert W. Lord ,  Mark A. Malamud ,  Craig J. Mundie ,  Nathan P. Myhrvold ,  John D. Rinaldo, Jr. ,  Desney S. Tan ,  Clarence T. Tegreene ,  Charles Whitmer ,  Victoria Y. H. Wood ,  Tim Paek ,  Lowell L. Wood, Jr. ,  Lin Zhong

发明人： Paramvir Bahl ,  Douglas C. Burger ,  Ranveer Chandra ,  Matthew G. Dyor ,  William Gates ,  Roderick A. Hyde ,  Muriel Y. Ishikawa ,  Pablos Holman ,  Jordin T. Kare ,  Royce A. Levien ,  Richard T. Lord ,  Robert W. Lord ,  Mark A. Malamud ,  Craig J. Mundie ,  Nathan P. Myhrvold ,  John D. Rinaldo, Jr. ,  Desney S. Tan ,  Clarence T. Tegreene ,  Charles Whitmer ,  Victoria Y. H. Wood ,  Tim Paek ,  Lowell L. Wood, Jr. ,  Lin Zhong

IPC分类号： H04W24/00 ,  G01S5/00 ,  H04W4/02 ,  H04W64/00 ,  G01S13/56 ,  G01S17/02 ,  H04W4/12

CPC分类号： G01S5/0027 ,  G01S13/56 ,  G01S17/026 ,  H04M2250/12 ,  H04W4/027 ,  H04W4/12 ,  H04W64/006

摘要： Systems and methods are described relating to detecting an indication of a person within a specified proximity to at least one mobile device; and presenting an indication of location of the at least one mobile device at least partially based on the indication of the person within the specified proximity. Additionally, systems and methods are described relating to means for detecting an indication of a person within a specified proximity to at least one mobile device; and means for presenting an indication of location of the at least one mobile device at least partially based on the indication of the person within the specified proximity.