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    Managing Dense Wireless Access Point Infrastructures in Wireless Local Area Networks
    41.
    发明申请
    Managing Dense Wireless Access Point Infrastructures in Wireless Local Area Networks 有权
    管理无线局域网中的密集无线接入点基础设施

    公开(公告)号：US20080316982A1

    公开(公告)日：2008-12-25

    申请号：US11766013

    申请日：2007-06-20

    申请人： Rohan N. Murty ,  Ranveer Chandra ,  Jitendra D. Padhye ,  Alastair Wolman ,  Brian D. Zill

    发明人： Rohan N. Murty ,  Ranveer Chandra ,  Jitendra D. Padhye ,  Alastair Wolman ,  Brian D. Zill

    IPC分类号： H04Q7/24

    CPC分类号： H04W48/02 ,  H04W48/10 ,  H04W48/20

    摘要： Techniques for enhancing the throughput capacity available to client devices connected to a wireless local area network (WLAN) are described. Specifically, existing WLAN resources are converted into wireless access points (APs) to create a dense infrastructure of wireless APs. To leverage this dense AP infrastructure, central management techniques are employed. With client-to-AP mapping, these techniques are used to prevent the discovery of multiple APs in a WLAN by a client device and to select a single AP (using certain policies) to associate with the client device and provide it with an enhanced wireless connection to the WLAN. Additionally, techniques are employed to centrally determine, using central policies, when the AP should disassociate from the client device and when another centrally selected AP should respond to, and associate with, the client device to provide it with an enhanced wireless connection to the WLAN—without interrupting/disrupting the client device's access.

    摘要翻译： 描述了用于增强连接到无线局域网（WLAN）的客户端设备的可用吞吐量的技术。 具体来说，将现有的WLAN资源转换成无线接入点（AP）以创建无线AP的密集基础设施。 为了利用这一密集的AP基础设施，采用中央管理技术。 使用客户端到AP映射，这些技术用于防止客户端设备在WLAN中发现多个AP，并选择单个AP（使用特定策略）与客户端设备关联并向其提供增强型无线 连接到WLAN。 另外，采用技术来集中确定使用中央策略时，AP应该与客户端设备脱离关系，以及当另一个集中选择的AP应该响应客户端设备并与客户端设备相关联，以向WLAN提供增强的无线连接时 - 不中断/中断客户端设备的访问。

    Wireless Performance Analysis System
    42.
    发明申请
    Wireless Performance Analysis System 有权
    无线性能分析系统

    公开(公告)号：US20080201109A1

    公开(公告)日：2008-08-21

    申请号：US11680575

    申请日：2007-02-28

    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： G06F11/30

    CPC分类号： H04W24/08 ,  H04L41/5009 ,  H04L43/0829 ,  H04L43/0894

    摘要： Wireless adapters are installed on one or more general purpose computing devices and are connected via a wireless 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 wireless signals transmitted between transceiver devices and access points and records information about these signals. One or more analysis or inference engines may be deployed to analyze the signals received from the air monitors to obtain optimum performance and connectivity information about the wireless network.

    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无线网络连接。 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。 空中监视器监视在收发器设备和接入点之间传输的无线信号，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来分析从空中监视器接收的信号，以获得关于无线网络的最佳性能和连接信息。

    Slotted seeded channel hopping for capacity improvement in wireless networks
    43.
    发明授权
    Slotted seeded channel hopping for capacity improvement in wireless networks 有权
    用于无线网络容量改进的开槽播种信道跳频

    公开(公告)号：US07379447B2

    公开(公告)日：2008-05-27

    申请号：US10947838

    申请日：2004-09-23

    申请人： John D. Dunagan ,  Paramvir Bahl ,  Ranveer Chandra

    发明人： John D. Dunagan ,  Paramvir Bahl ,  Ranveer Chandra

    IPC分类号： H04J3/06 ,  H04B1/00 ,  H04B5/00 ,  H04B7/00

    CPC分类号： H04W8/245 ,  H04B1/713 ,  H04W8/22 ,  H04W48/18 ,  H04W88/06

    摘要： A system and method that increases the capacity of a wireless network using frequency diversity. A user switches between channels of a network using a single network interface card in such a manner that nodes desiring to communicate overlap while disjoint communications mostly do not overlap. A driver is inserted into a device's networking stack and controls the network interface card using a plurality of virtual wireless network adapters. Packets for a recipient are queued when the recipient is not accessible on the node's channel. In one embodiment where multiple nodes are switching in and out of channel, the method changes part of a nodes channel hopping schedule to ensure concurrent connectivity in a channel for at least a brief time period such that packets can be received/transmitted with desired nodes.

    摘要翻译： 一种使用频率分集增加无线网络容量的系统和方法。 用户使用单个网络接口卡在网络的信道之间切换，使得期望通信的节点重叠而不相交通信大部分不重叠。 将驱动程序插入设备的网络堆栈中，并使用多个虚拟无线网络适配器来控制网络接口卡。 当收件人在节点的频道上无法访问时，收件人的数据包将排队。 在多个节点切换进出信道的一个实施例中，该方法改变了节点信道跳频调度的一部分，以确保信道中的并发连接至少一个短时间段，使得可以用期望的节点接收/发送分组。

    Adaptive topology discovery in communication networks
    44.
    发明授权
    Adaptive topology discovery in communication networks 失效
    通信网络中的自适应拓扑发现

    公开(公告)号：US07366113B1

    公开(公告)日：2008-04-29

    申请号：US10452708

    申请日：2003-06-02

    申请人： Ranveer Chandra ,  Christof Fetzer ,  Karin Hogstedt

    发明人： Ranveer Chandra ,  Christof Fetzer ,  Karin Hogstedt

    IPC分类号： H04L12/28

    CPC分类号： H04L41/12 ,  H04L45/00 ,  H04L45/32 ,  H04W40/246

    摘要： A topology discovery process is used to discover all of the links in an ad hoc network and thereby ascertain the topology of the entire network. One of the nodes of the network, referred to as the coordinator, receives the topology information which can then be used to, for example, distribute a routing table to each other node of the network. The process has a Diffusion phase in which a k-resilient mesh, k>1, is created by propagating a topology request message through the network. Through this process, the nodes obtain information from which they are able to discern their local neighbor information. In a subsequent, Gathering phase, the local neighbor information is reported upstream from a node to its parents in the mesh and thence to the parents' parents and so forth back to the coordinator. The robustness of the Diffusion phase is enhanced by allowing a node to have more than one parent as well as by a number of techniques, including use of a so-called diffusion acknowledgement message. The robustness of the Gathering phase is enhanced by a number of techniques including the use of timeouts that ensure that a node will report its neighbor information upstream even if it never receives neighbor information from one or more downstream neighbors and the use of a panic mode that enhances the probability that a node will get its neighbor information, and its descendents' neighbor information, reported upstream even if that node has lost connectivity with all of its parents.

    摘要翻译： 拓扑发现过程用于发现自组织网络中的所有链路，从而确定整个网络的拓扑。 称为协调器的网络的一个节点接收拓扑信息，然后可以将其用于例如将路由表分发到网络的每个其他节点。 该过程具有扩散阶段，其中通过通过网络传播拓扑请求消息来创建k-弹性网格k> 1。 通过这个过程，节点获得他们能够识别他们本地邻居信息的信息。 在随后的收集阶段，本地邻居信息被报告在网络上的一个节点上游到其父母，从父母的父母等返回给协调者。 通过允许节点具有多于一个的父节点以及包括使用所谓的扩散确认消息的许多技术来增强扩散阶段的鲁棒性。 收集阶段的鲁棒性通过许多技术得到增强，包括使用超时，以确保节点将向上报其邻居信息，即使它从未从一个或多个下游邻居接收到邻居信息，以及使用恐慌模式， 增加节点将获得其邻居信息的可能性，并且其后代的邻居信息在上游报告，即使该节点与其所有父节点丢失了连接。

    Platform for enterprise wireless network management applications
    46.
    发明申请
    Platform for enterprise wireless network management applications 有权
    企业无线网络管理应用平台

    公开(公告)号：US20070298779A1

    公开(公告)日：2007-12-27

    申请号：US11474652

    申请日：2006-06-26

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

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

    IPC分类号： H04B17/00 ,  H04Q7/20

    CPC分类号： H04L43/12 ,  H04L41/0213

    摘要： A framework for wireless network management applications in an enterprise environment using existing general purpose computing devices is presented. At least one of the devices is configured with a wireless adapter and is used as an AirMonitor to monitor one or more wireless networks. Other devices are configured as LandMonitors to monitor traffic on a wired network in the enterprise environment. At least one inference engine uses the LandMonitors and AirMonitors by assigning them monitoring tasks. Data from the monitoring tasks are stored in a database. Analysis of the data that is computationally intensive is generally performed by the inference engines. Wireless network management applications use the framework by installing and running application-specific components (e.g., filters) on the AirMonitors, LandMonitors, and/or inference engines.

    摘要翻译： 介绍了使用现有通用计算设备的企业环境中无线网络管理应用的框架。 至少一个设备配置有无线适配器，并用作AirMonitor来监视一个或多个无线网络。 其他设备被配置为LandMonitor以监视企业环境中有线网络上的流量。 至少一个推理机通过分配监控任务来使用LandMonitor和AirMonitor。 来自监控任务的数据存储在数据库中。 计算密集的数据的分析通常由推理引擎执行。 无线网络管理应用程序通过在AirMonitor，LandMonitor和/或推理引擎上安装和运行特定于应用程序的组件（例如，过滤器）来使用该框架。