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    • 72. 发明授权
    • Switching between MIMO and receiver beam forming in a peer-to-peer network
    • 在对等网络中切换MIMO和接收机波束形成
    • US08238234B2
    • 2012-08-07
    • US12477363
    • 2009-06-03
    • Hua WangXinzhou WuThomas RichardsonPramod ViswanathJunyi LiSaurabh Tavildar
    • Hua WangXinzhou WuThomas RichardsonPramod ViswanathJunyi LiSaurabh Tavildar
    • H04L12/56
    • H04B7/0871H04B7/0413H04B7/086
    • Aspects describe different multiple antenna techniques that can be utilized in a peer-to-peer network based on a network congestion level. A MIMO scheme where a transmitter sends to a receiver multiple spatial streams at substantially the same time in the same traffic segment can be utilized when network congestion level is low. A receiver beam forming scheme where transmitter sends a single stream in a traffic segment and receiver uses multiple receive antennas to maximize signal to noise ratio can be utilized when network congestion level is high. The connection pair (transmitter and receiver) occupy more control resources in the MIMO scheme than the receiver beam forming scheme. The decision related to which technique to utilize can be made at about the same time as a communication is initiated. Further, if network conditions change during a communication, the antenna technique that is utilized can be switched to a different technique during the communication exchange.
    • 方面描述了可以基于网络拥塞级别在对等网络中使用的不同的多天线技术。 当网络拥塞级别低时,可以利用MIMO方案,其中发射机在同一业务段中基本上同时间向接收机发送多个空间流。 一种接收机波束形成方案,其中发射机在业务段和接收机中发送单个流使用多个接收天线来最大化信噪比,可以在网络拥塞度高时使用。 连接对(发射机和接收机)在MIMO方案中占据比接收机波束形成方案更多的控制资源。 在通信开始的同时,可以进行与使用哪种技术有关的决定。 此外,如果在通信期间网络条件改变,则在通信交换期间,所利用的天线技术可以被切换到不同的技术。
    • 73. 发明申请
    • METHODS AND APPARATUS FOR MOBILE DEVICE LOCATION DETERMINATION
    • 用于移动设备位置确定的方法和装置
    • US20120184286A1
    • 2012-07-19
    • US13008959
    • 2011-01-19
    • Thomas RichardsonAleksandar JovicicCyril MeassonJunyi Li
    • Thomas RichardsonAleksandar JovicicCyril MeassonJunyi Li
    • H04W64/00
    • H04W64/00G01S5/0236H04M2242/30H04W4/023H04W4/027H04W4/029H04W24/10
    • Methods and apparatus for resolving an ambiguity with regard to a mobile device's location are described. In various embodiments, when a level of ambiguity with regard to the location of a mobile device is detected, and the level of ambiguity is above a threshold, an ambiguity resolution request signal is generated and transmitted. In this manner, a wireless terminal needing help in determining its location reliably may request such help but at other times may determine its own location without assistance. In some embodiments the ambiguity resolution request signal includes information, e.g., location probabilities, on one or more locations which are under consideration as possible locations of the mobile device. A device responding to the ambiguity resolution request provides information allowing the mobile device confronted with a location ambiguity to eliminate at least on location under consideration or to generate a new probability for one or more locations under consideration.
    • 描述了用于解决关于移动设备位置的模糊性的方法和装置。 在各种实施例中,当检测到关于移动设备的位置的模糊度级别,并且歧义级别高于阈值时,生成并发送模糊度解析请求信号。 以这种方式,需要帮助确定其位置的无线终端可以请求这样的帮助,但是在其他时候可以在没有帮助的情况下确定其自己的位置。 在一些实施例中,模糊度解析请求信号包括作为移动设备的可能位置正在考虑的一个或多个位置上的信息,例如位置概率。 响应于模糊度解析请求的设备提供信息,允许面临位置模糊的移动设备至少消除所考虑的位置,或为一个或多个所考虑的位置产生新的概率。
    • 74. 发明申请
    • METHOD AND APPARATUS FOR LEARNING OF THE PARAMETERS OF A FINGERPRINT PREDICTION MAP MODEL
    • 用于学习指纹预测图模型参数的方法和装置
    • US20120184219A1
    • 2012-07-19
    • US13009784
    • 2011-01-19
    • Thomas RichardsonAleksandar JovicicCyril Measson
    • Thomas RichardsonAleksandar JovicicCyril Measson
    • H04W64/00
    • G01S5/0252G01S5/0036G01S5/021G01S5/0278H04W64/006
    • Signal measurements are received, e.g., by a network device such as a location determination server, and a location of a mobile device to which the signal measurements correspond is determined. The measurements are also used to update parameters used to generate a signal prediction map. The signal prediction map, generated using the updated parameters, is then used for determining the position of another mobile device. In some embodiments parameter updating is performed when the location of a device is determined to a predetermined degree of certainty but not when the position of a mobile device is determined with a lower degree of certainty. Parameters used for generating prediction maps are updated, e.g., refined, based on signals collected for use in determining the location of a device without the need to conduct an updated survey and/or take signal measurements specifically for the purpose of updating prediction map parameters.
    • 例如通过诸如位置确定服务器的网络设备以及确定信号测量对应的移动设备的位置来接收信号测量。 测量也用于更新用于生成信号预测图的参数。 然后使用更新的参数生成的信号预测图用于确定另一个移动设备的位置。 在一些实施例中,当设备的位置被确定为预定的确定度时,而不是以更低的确定度确定移动设备的位置时,执行参数更新。 用于生成预测图的参数基于收集的用于确定设备位置而不需要进行更新的测量和/或采取特定用于更新预测图参数的信号测量的信号而被更新,例如精简。
    • 75. 发明授权
    • Methods and apparatus for peer discovery assist
    • 同伴发现辅助方法和装置
    • US08189508B2
    • 2012-05-29
    • US12163216
    • 2008-06-27
    • Vincent D. ParkThomas RichardsonJunyi LiSanjay Shakkottai
    • Vincent D. ParkThomas RichardsonJunyi LiSanjay Shakkottai
    • H04W4/00
    • H04W8/005H04W88/04
    • Methods and apparatus related to peer, network or service discovery in a mobile wireless system, such as an ad hoc peer-to-peer network, are described. Transmission of discovery information, such as upper layer discovery information, is divided into a number of portions to be transmitted separately over time. Transmission of the individual portions is structured to enable flexibility in the frequency of the peer discovery transmissions as well as the monitoring of such transmissions. Various embodiments facilitate rapid discovery and secure discovery, such as selective discovery by trusted peers. The structuring enables proxying of some transmissions by a third party, such as an assist node. The assist node receives discovery information portions being communicated at a first rate and retransmits the received discovery information portions at a second rate which is higher than the first rate.
    • 描述了与移动无线系统(诸如自组织对等网络)中的对等体,网络或服务发现有关的方法和装置。 诸如上层发现信息的发现信息的传输被划分为随时间分别发送的多个部分。 各个部分的传输被构造为使得对等体发现传输的频率的灵活性以及对这种传输的监视。 各种实施例有助于快速发现和安全发现,例如可信对等体的选择性发现。 结构化使得能够代理诸如辅助节点之类的第三方的某些传输。 辅助节点接收以第一速率传送的发现信息部分,并以高于第一速率的第二速率重发接收到的发现信息部分。
    • 76. 发明申请
    • METHODS AND APPARATUS FOR CONTROLLING SWITCHING BETWEEN RESOURCES AND/OR COMMUNICATING RESOURCE CHANGE INFORMATION IN A WIRELESS COMMUNICATIONS SYSTEM
    • 在无线通信系统中控制资源和/或通信资源变化信息之间的切换的方法和装置
    • US20120124231A9
    • 2012-05-17
    • US12561953
    • 2009-09-17
    • Thomas RichardsonXinzhou WuJunyi Li
    • Thomas RichardsonXinzhou WuJunyi Li
    • G06F15/16
    • H04W72/02H04W76/20
    • Methods and apparatus for controlling switching between resources and/or communicating resource change information in a wireless communications system are described. Various methods and apparatus are well suited for use in a decentralized wireless communications network, such as a decentralized peer to peer wireless network, where an individual communications device self allocates resources and makes resource switching decisions. A first communications device may decide that there is a need to switch from the first communications resource corresponding to a first identifier to a second communications resource corresponding to a second identifier, e.g., because of interference. The first communications device generates and transmits a broadcast change signal indicating a change from the first communications resource associated with the first identifier to a second communications resource associated with the second identifier. In some embodiments, the resource change signal is transmitted on at least one of the first and second communications resources.
    • 描述了用于控制无线通信系统中的资源之间的切换和/或通信资源改变信息的方法和装置。 各种方法和装置非常适用于分散式无线通信网络,例如分散式对等无线网络,其中单个通信设备自身分配资源并进行资源交换决策。 第一通信设备可以决定,例如由于干扰,需要从对应于第一标识符的第一通信资源切换到对应于第二标识符的第二通信资源。 第一通信设备生成并发送指示与第一标识符相关联的第一通信资源的改变的广播改变信号到与第二标识符相关联的第二通信资源。 在一些实施例中,在第一和第二通信资源中的至少一个上传送资源改变信号。
    • 79. 发明授权
    • Methods and apparatus supporting traffic signaling in peer to peer communications
    • 对等通信支持流量信令的方法和装置
    • US07898983B2
    • 2011-03-01
    • US11773947
    • 2007-07-05
    • Rajiv LaroiaJunyi LiAleksandar JovicicThomas RichardsonXinzhou Wu
    • Rajiv LaroiaJunyi LiAleksandar JovicicThomas RichardsonXinzhou Wu
    • G01R31/08
    • H04W8/005H04L5/0007H04L5/0032H04L5/0053H04W68/00H04W74/04H04W84/18
    • Methods and apparatus related to peer to peer communication networks are described. An active connection list is maintained by a wireless communications device supporting peer to peer communications. In various embodiments, the active connection identifier list being maintained is in addition to a list of discovered peers in the local vicinity. Paging signaling, e.g., peer to peer paging signaling, is used to establish active connections. Air link peer to peer traffic resources include traffic control resources and traffic data resources. A wireless communications device seeking to transmit on a traffic data resource transmits a traffic request signal on a traffic control resource. An active connection identifier is, in some embodiments, associated with a particular subset of traffic control resources. Thus, a wireless communications device monitors the portion or portions of the traffic control resource corresponding to its active connections for traffic request signals, but need not monitor other portions.
    • 描述了与对等通信网络相关的方法和设备。 活动连接列表由支持对等通信的无线通信设备维护。 在各种实施例中,正在维护的活动连接标识符列表是在本地附近的发现的对等体的列表之外的。 寻呼信令,例如对等寻呼信令,用于建立主动连接。 空中链路对等​​流量资源包括流量控制资源和流量数据资源。 寻求在业务数据资源上发送的无线通信设备在业务控制资源上发送业务请求信号。 在一些实施例中,活动连接标识符与流量控制资源的特定子集相关联。 因此,无线通信设备监视与其活动连接相对应的业务控制资源的部分或部分以用于业务请求信号,但不需要监视其他部分。
    • 80. 发明申请
    • METHODS AND APPARATUS FOR CONTROLLING RESOURCE USE IN A WIRELESS COMMUNICATIONS SYSTEM
    • 控制无线通信系统资源使用的方法与装置
    • US20100317291A1
    • 2010-12-16
    • US12483335
    • 2009-06-12
    • Thomas Richardson
    • Thomas Richardson
    • H04B15/00
    • H04W74/0825H04W8/005
    • Methods and apparatus for detecting, controlling and/or mitigating interference are described. Various embodiments are well suited to wireless communications systems in which shared communications resources are used, e.g., in a peer to peer communications systems lacking centralized control. In some embodiments, a communications device receives signals on shared communications resource, evaluates its capability to decode a received signal, and conditionally transmits an interference signal, e.g., on the shared communications resource. The interference signal is intended to cause a device transmitting on the shared communications resource to switch to a different communications resource, e.g., in response to the interference signal, so that its transmitted signal can be successfully decoded. In at least one embodiment, the shared communications resource is a peer discovery air link resource associated with a peer discovery resource identifier.
    • 描述了用于检测,控制和/或减轻干扰的方法和装置。 各种实施例非常适合于其中使用共享通信资源的无线通信系统,例如在缺乏集中控制的对等通信系统中。 在一些实施例中,通信设备在共享通信资源上接收信号,评估其对接收信号进行解码的能力,并有条件地发送干扰信号,例如在共享通信资源上。 干扰信号旨在使得在共享通信资源上发送的设备例如响应于干扰信号而切换到不同的通信资源,从而能够成功解码其发送的信号。 在至少一个实施例中,共享通信资源是与对等体发现资源标识符相关联的对等体发现空中链路资源。