利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

153 条记录 (耗时 0.035 秒)

    Method for determining placement of internet taps in wireless neighborhood networks
    61.
    发明授权
    Method for determining placement of internet taps in wireless neighborhood networks 有权
    确定无线邻居网络中互联网点击的位置的方法

    公开(公告)号：US08315196B2

    公开(公告)日：2012-11-20

    申请号：US10780262

    申请日：2004-02-17

    申请人： Lili Qiu ,  Kamal Jain ,  Ranveer Chandra ,  Mohammad Mahdian

    发明人： Lili Qiu ,  Kamal Jain ,  Ranveer Chandra ,  Mohammad Mahdian

    IPC分类号： H04H20/71

    CPC分类号： H04W16/18 ,  H04L45/122 ,  H04L45/20 ,  H04W74/08 ,  H04W80/00 ,  H04W88/16 ,  H04W92/02

    摘要： Disclosed is a method for determining the placement of ITAPs in wireless neighborhood networks. The method disclosed provides for efficient integration of multi-hop wireless networks with the Internet by placing ITAPs at strategic locations. Initially the method provides for the formulation of the ITAP placement problem under three wireless models. For each model, methods are developed to efficiently place ITAPs in the networks. The methods aim to minimize the number of required ITAPs while guaranteeing users' bandwidth requirements. Next, a fault tolerance version of the placement method is presented that provides bandwidth guarantees in the presence of failures. Finally the methods are extended to take into account variable traffic demands by developing an approximation algorithm to simultaneously optimize ITAP placement based on demands over multiple periods.

    摘要翻译： 公开了一种用于确定ITAP在无线邻域网络中的位置的方法。 所公开的方法通过将ITAP放置在战略位置来提供多跳无线网络与因特网的有效集成。 最初，该方法提供了三种无线模型下ITAP放置问题的制定。 对于每个模型，开发了有效地将ITAP放置在网络中的方法。 这些方法旨在最大限度地减少所需的ITAP数量，同时保证用户的带宽需求。 接下来，介绍了在出现故障时提供带宽保证的布局方法的容错版本。 最后，通过开发近似算法来扩展方法以考虑可变流量需求，以便在多个时期内根据需求同时优化ITAP布局。

    Dynamic channel-width allocation in wireless networks
    63.
    发明授权
    Dynamic channel-width allocation in wireless networks 有权
    无线网络中的动态通道宽度分配

    公开(公告)号：US08243612B2

    公开(公告)日：2012-08-14

    申请号：US11832624

    申请日：2007-08-01

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

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

    IPC分类号： H04W16/02 ,  H04W24/02 ,  H04W28/20 ,  H04B7/00

    CPC分类号： H04W16/10 ,  H04W28/16

    摘要： Techniques for enhancing throughput capacity and/or bandwidth distribution fairness among APs in a wireless network are described. Specifically, a channel frequency profile which includes a center frequency and channel-width (i.e., channel bandwidth) is dynamically assigned to each of one or more APs in a wireless network. The assigned channel frequency profile for each AP is based, at least in part, on the current composition of the wireless network including, its topology and traffic load distribution. In this regard, each AP's channel frequency profile can be continuously or periodically changed such that the entire available frequency spectrum is effectively utilized and/or interference between APs is avoided or limited. This, in turn, enhances the throughput capacity and/or bandwidth distribution fairness of the wireless network.

    摘要翻译： 描述了用于在无线网络中的AP之间增强吞吐量容量和/或带宽分配公平性的技术。 具体地，包括中心频率和信道宽度（即，信道带宽）的信道频率分布被动态分配给无线网络中的一个或多个AP的每一个。 每个AP的分配的信道频率分布至少部分地基于无线网络的当前组成，包括其拓扑和业务负载分布。 在这方面，可以连续地或周期性地改变每个AP的信道频率分布，使得有效利用整个可用频谱和/或避免或限制AP之间的干扰。 这又增强了无线网络的吞吐能力和/或带宽分配公平性。

    Self-configuring wireless network location system
    64.
    发明授权
    Self-configuring wireless network location system 有权
    自配置无线网络定位系统

    公开(公告)号：US08155662B2

    公开(公告)日：2012-04-10

    申请号：US11753536

    申请日：2007-05-24

    申请人： Brian D. Zill ,  Alastair Wolman ,  Jitendra D. Padhye ,  Paramvir Bahl ,  Ranveer Chandra

    发明人： Brian D. Zill ,  Alastair Wolman ,  Jitendra D. Padhye ,  Paramvir Bahl ,  Ranveer Chandra

    IPC分类号： H04W24/00 ,  H04W4/00

    CPC分类号： H04W24/02 ,  G01S5/02 ,  G01S5/14 ,  H04L41/0213 ,  H04L41/0806 ,  H04L41/0886 ,  H04L41/12 ,  H04W64/00 ,  H04W84/18

    摘要： Wireless adapters are installed on one or more general purpose computing devices and are connected via a network in an enterprise environment. The adapters are densely deployed at known locations throughout the environment and are configured as air monitors. The air monitors monitor signals transmitted by one or more transceiver devices and records information about these signals. One or more analysis or inference engines may be deployed to obtain the recorded signal information and the air monitor locations to determine a location of the one or more wireless transceivers devices deployed in the environment.

    摘要翻译： 无线适配器安装在一个或多个通用计算设备上，并通过企业环境中的网络连接。 适配器密集地部署在整个环境中的已知位置，并配置为空气监视器。 空气监视器监视由一个或多个收发器设备发送的信号并记录关于这些信号的信息。 可以部署一个或多个分析或推理引擎以获得记录的信号信息和空中监视器位置，以确定部署在环境中的一个或多个无线收发器设备的位置。

    OPPORTUNISTIC USE OF WIRELESS NETWORK STATIONS AS REPEATERS
    65.
    发明申请
    OPPORTUNISTIC USE OF WIRELESS NETWORK STATIONS AS REPEATERS 有权
    无线网络作为替代机构的机会性使用

    公开(公告)号：US20120014313A1

    公开(公告)日：2012-01-19

    申请号：US13245314

    申请日：2011-09-26

    申请人： Ranveer Chandra ,  Paramvir Bahl ,  Jitendra D. Padhye ,  Yan Yu

    发明人： Ranveer Chandra ,  Paramvir Bahl ,  Jitendra D. Padhye ,  Yan Yu

    IPC分类号： H04B7/14

    CPC分类号： H04W8/245 ,  H04W8/22 ,  H04W48/18 ,  H04W88/06

    摘要： Implementation of opportunistic use of stations in a wireless network as repeaters is described. In one implementation, a station detects the existence of rate anomaly in a wireless network. In response to the rate anomaly, the station may transform into a software repeater for certain other neighboring stations. The repeater function allows for the relaying of packets sent by these neighboring stations to the access point and vice versa. The other neighboring stations, owing to their relative proximity to the repeater station, transmit data at a higher rate to the repeater station. Thus, the removal of the slower stations reduces clogging of the access point and increases the overall data rate within the wireless network. Further, a zero-overhead network coding protocol may be implemented in conjunction with the repeater function to increase capacity of the wireless network.

    摘要翻译： 描述了在无线网络中实现机会性使用站点作为中继器。 在一个实现中，站检测无线网络中的速率异常的存在。 响应于速率异常，站可以转换成某些其他邻近站的软件中继器。 中继器功能允许将由这些相邻站发送的分组中继到接入点，反之亦然。 其他相邻站由于其相对接近中继站而以更高的速率向中继站发送数据。 因此，较慢站的移除减少了接入点的堵塞并增加了无线网络内的总体数据速率。 此外，零开销网络编码协议可以结合中继器功能来实现，以增加无线网络的容量。

    ENABLING WHITE SPACE NETWORKS INDEPENDENT OF LOW-THRESHOLD SENSING
    66.
    发明申请
    ENABLING WHITE SPACE NETWORKS INDEPENDENT OF LOW-THRESHOLD SENSING 有权
    启用独立于低阈值感应的白色空间网络

    公开(公告)号：US20110317019A1

    公开(公告)日：2011-12-29

    申请号：US12822218

    申请日：2010-06-24

    申请人： Paramvir Bahl ,  Ranveer Chandra ,  Thomas Moscibroda ,  Rohan Narayana Murty

    发明人： Paramvir Bahl ,  Ranveer Chandra ,  Thomas Moscibroda ,  Rohan Narayana Murty

    IPC分类号： H04N17/00

    CPC分类号： H04W48/08 ,  H04L27/0006 ,  H04W16/14 ,  H04W24/00

    摘要： Described is a technology by which a remote or local geo-location service provides white space information that one or more client devices and/or base stations may use to determine which white spaces are available for use, e.g., for wireless networking. Because of the information, low-threshold sensing is not needed by the client devices and/or base stations to know which white spaces are available. The service computes the available white spaces for a given location based upon television transmitter parameters, elevation data, and information received regarding any operational wireless microphones.

    摘要翻译： 描述了一种技术，通过该技术远程或本地地理位置服务提供一个或多个客户端设备和/或基站可以用于确定哪些空格可用于例如无线网络的白空间信息。 由于该信息，客户端设备和/或基站不需要低阈值感测来知道哪些空白可用。 该服务基于电视发射机参数，高程数据和关于任何操作无线麦克风接收到的信息来计算给定位置的可用空白空间。

    Discovering communication rules in a network trace
    67.
    发明授权
    Discovering communication rules in a network trace 有权
    在网络跟踪中发现通信规则

    公开(公告)号：US08040798B2

    公开(公告)日：2011-10-18

    申请号：US12238233

    申请日：2008-09-25

    申请人： Ranveer Chandra ,  Srikanth Kandula

    发明人： Ranveer Chandra ,  Srikanth Kandula

    IPC分类号： H04J1/16

    CPC分类号： H04L63/145 ,  H04L41/0631 ,  H04L41/0846 ,  H04L41/085 ,  H04L41/0873 ,  H04L41/16 ,  H04L43/00

    摘要： The claimed subject matter provides a system and/or a method that facilitates managing a network by mining a communication rule. An analysis engine can employ a packet trace within a network in order to provide timing information, wherein the network includes at least one of a host, a protocol, or an application. A traffic evaluator can extract a communication rule for the network based upon an activity matrix generated from the timing information in which the activity matrix includes at least one of a row of a time window for the packet trace and a column for a flow in the packet trace.

    摘要翻译： 所要求保护的主题提供通过挖掘通信规则来便于管理网络的系统和/或方法。 分析引擎可以在网络内采用分组跟踪，以提供定时信息，其中网络包括主机，协议或应用中的至少一个。 流量评估器可以基于从定时信息生成的活动矩阵来提取网络的通信规则，其中活动矩阵包括用于分组跟踪的时间窗的一行和分组中的流的列中的至少一个 跟踪。

    Detection and management of rogue wireless network connections
    69.
    发明授权
    Detection and management of rogue wireless network connections 有权
    流氓无线网络连接的检测和管理

    公开(公告)号：US08000698B2

    公开(公告)日：2011-08-16

    申请号：US11586137

    申请日：2006-10-25

    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： H04M1/66 ,  H04M1/68 ,  H04M3/16

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

    摘要： A method of detecting rogue devices that are coupled to a wired network without generating false negative or false positive alerts is provided. When a wireless monitor detects an observed SSID and/or BSSID, various tests are run to determine whether the observed device is actually coupled to the wired network. To guard against the suspect device spoofing an authorized SSID and/or BSSID, location information is gathered so that the network administrator can pinpoint the location of the rogue device. If the device is not recognized, various other tests are run to determine whether the unrecognized device is actually connected to the wired network. These tests include an association test, a MAC address test, an ARP test, a packet replay test, a correlation test, and/or a DHCP fingerprint test. Once it is determined that the suspect device is a rogue connected to the wired network, an appropriate alert is generated.

    摘要翻译： 提供了一种检测耦合到有线网络的恶意设备而不产生假否定或非正警告的方法。 当无线监视器检测到观察到的SSID和/或BSSID时，将进行各种测试以确定观察设备是否实际耦合到有线网络。 为了防范怀疑设备欺骗授权的SSID和/或BSSID，收集位置信息，以便网络管理员可以精确定位流氓设备的位置。 如果设备未识别，则会运行各种其他测试，以确定无法识别的设备是否实际连接到有线网络。 这些测试包括关联测试，MAC地址测试，ARP测试，分组重放测试，相关测试和/或DHCP指纹测试。 一旦确定可疑设备是连接到有线网络的流氓，就产生适当的警报。

    Cooperative diagnosis in a wireless LAN
    70.
    发明授权
    Cooperative diagnosis in a wireless LAN 有权
    无线局域网中的协作诊断

    公开(公告)号：US07925765B2

    公开(公告)日：2011-04-12

    申请号：US11400103

    申请日：2006-04-07

    申请人： Ranveer Chandra ,  Venkata N. Padmanabhan ,  Ming Zhang

    发明人： Ranveer Chandra ,  Venkata N. Padmanabhan ,  Ming Zhang

    IPC分类号： 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。