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公开(公告)号：US08077090B1
公开(公告)日：2011-12-13
申请号：US12815973
申请日：2010-06-15
IPC分类号： G01S3/02
CPC分类号： G01S5/0252 , G01S11/06
摘要： The simultaneous localization and RF modeling technique pertains to a method of providing simultaneous localization and radio frequency (RF) modeling. In one embodiment, the technique operates in a space with wireless local area network coverage (or other RF transmitters). Users carrying Wi-Fi-enabled devices traverse this space while the mobile devices record the Received Signal Strength (RSS) measurements corresponding to access points (APs) in view at various unknown locations and report these RSS measurements, as well as nay other available location fix to a localization server. A RF modeling algorithm runs on the server and is used to estimate the location of the APs using the recorded RSSI measurements and any other available location information. All of the observations are constrained by the physics of wireless propagation. The technique models these constraints and uses a genetic algorithm to solve them, thereby providing an absolute location of the mobile device.
摘要翻译： 同时定位和RF建模技术涉及提供同时定位和射频（RF）建模的方法。 在一个实施例中，该技术在具有无线局域网覆盖（或其他RF发射机）的空间中操作。 携带启用Wi-Fi的设备的用户遍历此空间，而移动设备在各种未知位置记录与接入点（AP）相对应的接收信号强度（RSS）测量值，并报告这些RSS测量值以及其他可用位置 修复本地化服务器。 RF建模算法在服务器上运行，并用于使用记录的RSSI测量和任何其他可用位置信息来估计AP的位置。 所有的观察都受到无线传播的物理学的限制。 该技术对这些约束进行建模，并使用遗传算法来解决这些约束，从而提供移动设备的绝对位置。
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公开(公告)号：US20110304503A1
公开(公告)日：2011-12-15
申请号：US12815973
申请日：2010-06-15
CPC分类号： G01S5/0252 , G01S11/06
摘要： The simultaneous localization and RF modeling technique pertains to a method of providing simultaneous localization and radio frequency (RF) modeling. In one embodiment, the technique operates in a space with wireless local area network coverage (or other RF transmitters). Users carrying Wi-Fi-enabled devices traverse this space while the mobile devices record the Received Signal Strength (RSS) measurements corresponding to access points (APs) in view at various unknown locations and report these RSS measurements, as well as nay other available location fix to a localization server. A RF modeling algorithm runs on the server and is used to estimate the location of the APs using the recorded RSSI measurements and any other available location information. All of the observations are constrained by the physics of wireless propagation. The technique models these constraints and uses a genetic algorithm to solve them, thereby providing an absolute location of the mobile device.
摘要翻译： 同时定位和RF建模技术涉及提供同时定位和射频（RF）建模的方法。 在一个实施例中，该技术在具有无线局域网覆盖（或其他RF发射机）的空间中操作。 携带启用Wi-Fi的设备的用户遍历此空间，而移动设备在各种未知位置记录与接入点（AP）相对应的接收信号强度（RSS）测量值，并报告这些RSS测量值以及其他可用位置 修复本地化服务器。 RF建模算法在服务器上运行，并用于使用记录的RSSI测量和任何其他可用位置信息来估计AP的位置。 所有的观察都受到无线传播的物理学的限制。 该技术对这些约束进行建模，并使用遗传算法来解决这些约束，从而提供移动设备的绝对位置。
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公开(公告)号：US20120322497A1
公开(公告)日：2012-12-20
申请号：US13160622
申请日：2011-06-15
CPC分类号： H04W36/00837 , H04W36/30
摘要： One or more techniques and/or systems are disclosed for predicting when a signal handoff may occur from a current base station to a neighboring base station for a mobile device. An indication of signal strength between the mobile device and the current base station and an indication of signal strength between the mobile device and a (e.g., closest) neighboring base station can be monitored by the mobile device. A difference between these signal strength indications can be determined and compared against a threshold (e.g., based upon historical signal handoffs) to predict when and/or where a signal handoff may occur. The predicted signal handoff may be determined by the mobile device and a corresponding notification can be provided so that appropriate action may be taken (e.g., a user may not initiate a call and/or an application may not attempt to communicate data).
摘要翻译： 公开了一种或多种技术和/或系统，用于预测何时可以从当前基站到移动设备的相邻基站发生信号切换。 移动设备和当前基站之间的信号强度的指示和移动设备与（例如最近的）相邻基站之间的信号强度的指示可以被移动设备监视。 可以确定这些信号强度指示之间的差异并将其与阈值进行比较（例如，基于历史信号越区切换）来预测信号切换可能发生的时间和/或位置。 可以由移动设备确定预测的信号切换，并且可以提供相应的通知，使得可以采取适当的动作（例如，用户可能不发起呼叫和/或应用可能不尝试传送数据）。
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公开(公告)号：US08626949B2
公开(公告)日：2014-01-07
申请号：US11862778
申请日：2007-09-27
申请人： Sharad Agarwal , Najam Ahmad , Behrooz Chitsaz , Manuel Silverio Da Silva Costa , Albert Gordon Greenberg , Parantap Lahiri , Venkata N. Padmanabhan
发明人： Sharad Agarwal , Najam Ahmad , Behrooz Chitsaz , Manuel Silverio Da Silva Costa , Albert Gordon Greenberg , Parantap Lahiri , Venkata N. Padmanabhan
IPC分类号： G06F15/16
CPC分类号： H04L29/12066 , H04L61/1511 , H04L67/16
摘要： An intelligent lookup service for a network is provided for clients of a network requesting services of the network that intelligently determines, based on a service requirement of the requested service, optimal service endpoint(s) for providing the requested service. The intelligent lookup service can incorporate predetermined mapping policy and traffic measurements into the determination. In addition, a feedback loop is provided from clients and/or service endpoints to the lookup service concerning measurements about prior connections in the network. The lookup service can include a set of beacons distributed in the network and against which measurements about the network are recorded. A client receives, from the lookup service in response to a request for a network address, a set of candidate service endpoints that pertain to the requested network address and the client connects to one of the candidate service endpoints based on policy or context.
摘要翻译： 为网络的客户端提供一个网络的智能查找服务，该网络请求网络的服务，根据请求的服务的服务要求智能地确定用于提供所请求的服务的最佳服务端点。 智能查找服务可以将预定的映射策略和流量测量结合到确定中。 此外，从客户端和/或服务端点向查询服务提供关于网络中先前连接的测量的反馈回路。 查找服务可以包括分布在网络中的一组信标，并且记录关于网络的哪些测量。 客户机响应于网络地址的请求，从查找服务器接收与所请求的网络地址相关的一组候选服务端点，并且客户端基于策略或上下文连接到候选服务端点之一。
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公开(公告)号：US08441354B2
公开(公告)日：2013-05-14
申请号：US13118997
申请日：2011-05-31
IPC分类号： G08B13/14
CPC分类号： H04Q9/00 , H04Q2209/47 , H04Q2209/845
摘要： An “RFID-Based Inference Platform” provides various techniques for using RFID tags in combination with other enterprise sensors to track users and objects, infer their interactions, and provide these inferences for enabling further applications. Specifically, observations are collected from combinations of RFID tag reads and other enterprise sensors including electronic calendars, user presence identifiers, cardkey access logs, computer logins, etc. Given sufficient observations, the RFID-Based Inference Platform automatically differentiates between tags associated with or affixed to people and tags affixed to objects. The RFID-Based Inference Platform then infers additional information including identities of people, ownership of specific objects, the nature of different “zones” in a workspace (e.g., private office versus conference room). These inferences are then used to enable various applications including object tracking, automated object ownership determinations, automated object cataloging, automated misplaced object alerts, video annotations, automated conference room scheduling, semi-automated object image catalogs, object interaction query systems, etc.
摘要翻译： “基于RFID的推理平台”提供了使用RFID标签与其他企业传感器结合跟踪用户和对象，推断其交互作用并提供这些推论以实现其他应用的各种技术。 具体来说，从RFID标签读取和其他企业传感器的组合（包括电子日历，用户存在标识符，卡密钥访问日志，计算机登录等）收集观察结果。给定足够的观察结果，基于RFID的推理平台自动区分与或相关的标签 贴在物体上的人和标签。 然后，基于RFID的推理平台推出了包括人的身份，特定对象的所有权，工作空间（例如，私人办公室与会议室）中的不同“区域”的性质的附加信息。 然后将这些推论用于启用各种应用程序，包括对象跟踪，自动对象所有权确定，自动对象编目，自动放错对象警报，视频注释，自动会议室调度，半自动对象图像目录，对象交互查询系统等。
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公开(公告)号：US08135828B2
公开(公告)日：2012-03-13
申请号：US12394926
申请日：2009-02-27
IPC分类号： G06F15/173
CPC分类号： H04L41/0631 , H04L41/0677 , H04L43/06 , H04L43/0829 , H04L43/0852 , H04L43/0864 , H04L43/0888 , H04L43/10
摘要： A client-based collaborative approach called WebProfiler is used for diagnosing Web transaction failures. The WebProfiler leverages end-host cooperation to pool together observations on the success or failure of Web transactions from multiple vantage points. These observations are utilized by a collaborative blame attribution algorithm to identify a suspect network entity that caused the Web transaction failure.
摘要翻译： 称为WebProfiler的基于客户端的协作方法用于诊断Web事务故障。 WebProfiler利用最终主机合作，将来自多个有利位置的Web事务成功或失败的观察结果汇总在一起。 这些观察结果被协同责任归属算法所利用，以识别导致Web事务失败的可疑网络实体。
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7.发明授权Method and system for detecting a communication problem in a computer network 有权用于检测计算机网络中的通信问题的方法和系统公开(公告)号：US08001605B2
公开(公告)日：2011-08-16
申请号：US12193277
申请日：2008-08-18
IPC分类号： G06F11/22
CPC分类号： H04L63/12
摘要： A computer in a network runs a verification procedure in which it sends data packets to another computer in the network. Some or all of the data packets contain, either individually or collectively, a secret piece of information, such as a secret code. The computer then makes a determination regarding the network links between it and the other computer. If, for example, the other computer is able to respond by providing the secret piece of information back, then the computer sending the data packets concludes that the devices along the network links en route to the other computer are properly forwarding data packets.
摘要翻译： 网络中的计算机运行验证过程，其中将数据包发送到网络中的另一台计算机。 一些或全部数据包单独地或共同地包含诸如密码的秘密信息。 然后，计算机确定其与另一台计算机之间的网络链路。 例如，如果另一计算机能够通过提供秘密的信息来响应，则发送数据分组的计算机的结论是，沿着网络链路的设备路由到另一台计算机正在正确转发数据分组。
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公开(公告)号：US07925765B2
公开(公告)日：2011-04-12
申请号：US11400103
申请日：2006-04-07
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。
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9.发明授权Model and method for computing performance bounds in multi-hop wireless networks 失效用于计算多跳无线网络中性能范围的模型和方法公开(公告)号：US07860506B2
公开(公告)日：2010-12-28
申请号：US12273082
申请日：2008-11-18
IPC分类号： H04W40/00
CPC分类号： H04W16/14
摘要： Disclosed is a general model and method for computing performance bounds in multi-hop wireless networks. Rather than focusing on computing asymptotic performance bounds under assumptions of homogeneity or randomness in the network topology and/or workload, the present invention accommodates any given network, technology, interference model, routing paradigm, and workload. Using a conflict graph to formally characterize the impact of wireless interference on the performance of multi-hop wireless networks, methods for computing upper and lower bounds on the capacity of a given wireless network are detailed. Besides computing network capacity, the model and method disclosed can also enable or benefit other applications including maximizing fairness and minimizing maximum link utilization.
摘要翻译： 公开了一种用于计算多跳无线网络中的性能界限的通用模型和方法。 本发明不考虑在网络拓扑和/或工作负载中的均匀性或随机性假设下计算渐近性能界限，而是适应任何给定的网络，技术，干扰模型，路由范例和工作负载。 使用冲突图形式表征无线干扰对多跳无线网络性能的影响，详细描述了计算给定无线网络容量的上限和下限的方法。 除了计算网络容量之外，所公开的模型和方法还可以实现或受益于其他应用，包括最大化公平性并最小化最大链路利用率。
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公开(公告)号：US20100195548A1
公开(公告)日：2010-08-05
申请号：US12363450
申请日：2009-01-30
IPC分类号： G08C17/00
CPC分类号： H04L12/2668 , H04L43/0876 , H04W52/0229 , Y02D70/00 , Y02D70/142 , Y02D70/23
摘要： Embodiments of the claimed subject matter provide an approach to managing the power state of wireless network devices in a wireless network. Embodiments include a process for modifying the scheduling of data distribution device by referencing the data buffer in an access point for data intended for a wireless network client operating under a power-saving mode, and re-arranging the distribution queue of the access point to be granted priority for a time which coincides with the delivery of a polling beacon to the power-saving wireless client. Other embodiments include a method to create virtual access points for a particular usage, and to leverage access points in a wireless network for particular usages of devices in range.
摘要翻译： 所要求保护的主题的实施例提供了一种管理无线网络中的无线网络设备的功率状态的方法。 实施例包括通过参考用于在功率节省模式下操作的无线网络客户端的数据的接入点中的数据缓冲器来修改数据分发设备的调度的过程，以及将接入点的分发队列重新布置为 给予优先权一段时间，这与向省电无线客户端发送轮询信标一致。 其他实施例包括为特定使用创建虚拟接入点的方法，以及利用无线网络中的接入点来对范围内的设备的特定用途。
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