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51.发明授权Detecting and diagnosing performance problems in a wireless network through neighbor collaboration 有权通过邻居协作检测和诊断无线网络中的性能问题公开(公告)号：US07603460B2
公开(公告)日：2009-10-13
申请号：US11047189
申请日：2005-01-31
申请人： Atul Adya , Paramvir Bahl , Ranveer Chandra , Lili Qiu
发明人： Atul Adya , Paramvir Bahl , Ranveer Chandra , Lili Qiu
IPC分类号： G06F15/173
摘要： Systems and methods are described for detecting and diagnosing performance problems in wireless communications networks. Diagnostic programs execute on a wireless device, neighboring devices, and a wireless access point to collaborate in diagnosing network problems. The neighboring devices eavesdrop on a diagnostic session between the device and the access point to determine problems at the device, the access point, and in the wireless medium. Data from the eavesdropping devices can be summarized and sent to a network administrator for further action. The diagnostic programs are described to contain a passive component for detecting problems, and an active component for running the diagnostic techniques.
摘要翻译： 描述了用于检测和诊断无线通信网络中的性能问题的系统和方法。 诊断程序在无线设备，相邻设备和无线接入点上执行以协作诊断网络问题。 相邻设备窃听设备和接入点之间的诊断会话，以确定设备，接入点和无线介质中的问题。 来自窃听设备的数据可以被汇总并发送给网络管理员进行进一步的操作。 诊断程序被描述为包含用于检测问题的被动组件，以及用于运行诊断技术的活动组件。
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公开(公告)号：US20080201109A1
公开(公告)日：2008-08-21
申请号：US11680575
申请日：2007-02-28
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。
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53.发明授权公开(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
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。
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公开(公告)号：US20080016115A1
公开(公告)日：2008-01-17
申请号：US11555571
申请日：2006-11-01
申请人： Paramvir Bahl , Ranveer Chandra , David A. Maltz , Suman Nath , Ming Zhang
发明人： Paramvir Bahl , Ranveer Chandra , David A. Maltz , Suman Nath , Ming Zhang
IPC分类号： G06F17/00
CPC分类号： H04L41/22 , H04L41/0677 , H04L41/12 , H04L41/142
摘要： In a network management system, dependency relationships of network clients and network elements are computed. In an implementation, a dependency graph is generated based on the relationships, and the probabilities of problems associated with the network client and network element are determined based on the dependency graph.
摘要翻译： 在网络管理系统中，计算网络客户端和网元的依赖关系。 在实现中，基于关系生成依赖图，并且基于依赖图来确定与网络客户端和网元相关联的问题的概率。
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公开(公告)号：US20070298779A1
公开(公告)日：2007-12-27
申请号：US11474652
申请日：2006-06-26
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。
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56.发明申请公开(公告)号：US20060068769A1
公开(公告)日：2006-03-30
申请号：US11047189
申请日：2005-01-31
申请人： Atul Adya , Paramvir Bahl , Ranveer Chandra , Lili Qiu
发明人： Atul Adya , Paramvir Bahl , Ranveer Chandra , Lili Qiu
IPC分类号： H04M3/00
摘要： Systems and methods are described for detecting and diagnosing performance problems in wireless communications networks. Diagnostic programs execute on a wireless device, neighboring devices, and a wireless access point to collaborate in diagnosing network problems. The neighboring devices eavesdrop on a diagnostic session between the device and the access point to determine problems at the device, the access point, and in the wireless medium. Data from the eavesdropping devices can be summarized and sent to a network administrator for further action. The diagnostic programs are described to contain a passive component for detecting problems, and an active component for running the diagnostic techniques.
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公开(公告)号：US20130174128A1
公开(公告)日：2013-07-04
申请号：US13339358
申请日：2011-12-28
申请人： Aman Kansal , Ranveer Chandra , Jie Liu , Paramvir Bahl
发明人： Aman Kansal , Ranveer Chandra , Jie Liu , Paramvir Bahl
IPC分类号： G06F9/44
CPC分类号： G06F11/3457 , G06F11/3062 , G06F2201/865 , Y02D10/34
摘要： Embodiments provide implementations for estimating a test application's energy usage on a target device based on execution of the test application. Resource usage associated with the execution of the test application is measured. The measured resource usage is input into a power model of the target device to estimate the energy that the test application uses when executed on the target device. An emulation system is configured to execute the test application in a virtual execution environment using resource scaling and simulated target device application programming interfaces to substantially simulate the corresponding capabilities of the target device.
摘要翻译： 实施例提供了基于测试应用的执行来估计测试应用在目标设备上的能量使用的实现。 测量与执行测试应用程序相关联的资源使用情况。 测量的资源使用量被输入到目标设备的功率模型中，以估计在目标设备上执行时测试应用使用的能量。 仿真系统被配置为使用资源缩放和模拟的目标设备应用编程接口在虚拟执行环境中执行测试应用，以基本上模拟目标设备的对应能力。
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公开(公告)号：US08473989B2
公开(公告)日：2013-06-25
申请号：US12822218
申请日：2010-06-24
IPC分类号： H04N7/20
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。
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59.发明授权Signaling over cellular networks to reduce the Wi-Fi energy consumption of mobile devices 有权通过蜂窝网络进行信令，以减少移动设备的Wi-Fi能耗公开(公告)号：US08270965B2
公开(公告)日：2012-09-18
申请号：US11697263
申请日：2007-04-05
申请人： Paramvir Bahl , Ranveer Chandra , Kevin Chin , Alastair Wolman , Yuvraj Agarwal
发明人： Paramvir Bahl , Ranveer Chandra , Kevin Chin , Alastair Wolman , Yuvraj Agarwal
IPC分类号： H04M3/00
CPC分类号： H04W52/0229 , H04L65/1069 , H04M1/2535 , H04M1/725 , H04M2250/06 , H04W52/0209 , H04W52/0235 , H04W52/0274 , H04W74/085 , H04W76/10 , H04W80/04 , H04W84/10 , H04W88/06 , H04W92/00 , Y02D70/00 , Y02D70/1224 , Y02D70/142 , Y02D70/23
摘要： Techniques for increasing the battery life on a mobile device by decreasing the energy consumption of the mobile device's wireless fidelity (Wi-Fi) interface are described. In one embodiment, the mobile device's Wi-Fi interface is automatically disabled when the device is not engaged in a voice over internet protocol (VoIP) call via the Wi-Fi interface. When a VoIP call is initiated on the device, or when the device receives a wake up call from a server via its Cellular interface, the Wi-Fi interface is automatically enabled. Using its Wi-Fi interface, the mobile device then connects to an IP-based network via a Wi-Fi access point. The server then initiates a direct call, wherein VoIP technology is used by the mobile device, between the mobile device and a VoIP calling device.
摘要翻译： 描述了通过降低移动设备的无线保真（Wi-Fi）接口的能量消耗来增加移动设备上的电池寿命的技术。 在一个实施例中，当设备未通过Wi-Fi接口进行通过因特网协议语音（VoIP）呼叫时，移动设备的Wi-Fi接口被自动禁用。 当在设备上启动VoIP呼叫时，或者当设备通过其蜂窝接口从服务器接收到唤醒呼叫时，Wi-Fi接口将被自动启用。 使用其Wi-Fi接口，移动设备然后通过Wi-Fi接入点连接到基于IP的网络。 然后，服务器启动直接呼叫，其中移动设备使用VoIP技术，在移动设备和VoIP呼叫设备之间。
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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
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。
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