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    • 11. 发明授权
    • Message brokering in a consuming broker device
    • 消费代理设备中的消息代理
    • US08423619B2
    • 2013-04-16
    • US12727831
    • 2010-03-19
    • John Christopher HawkinsFrancis N. ParrHao Yang
    • John Christopher HawkinsFrancis N. ParrHao Yang
    • G06F15/16
    • G06F9/542G06F2209/544
    • Message brokering in a consuming broker device of a publish-subscribe system having at least one processor includes: designating in the consuming broker device a first producing broker device as a sole provider of messages having a topic to which the consuming broker device has subscribed; and in response to a determination that a measured livelihood of the first producing broker device is less than a defined threshold, designating with the consuming broker device a second producing broker device as the sole provider of the messages having the topic to the consuming broker device. The second producing broker device has a measured livelihood that is greater than the measured livelihood of the first producing broker device.
    • 在具有至少一个处理器的发布订阅系统的消费代理设备中的消息代理包括:在消费代理设备中指定第一生产代理设备作为具有消费代理设备已订阅的主题的消息的唯一提供者; 并且响应于确定第一生产代理设备的测量生计小于定义的阈值,与消费代理设备一起指定作为具有该主题的消息的唯一提供者的第二生产代理设备到消费代理设备。 第二生产经纪人设备的测量生计大于第一生产经纪人设备的测量生计。
    • 16. 发明授权
    • System and apparatus for optimally trading off the replication overhead and consistency level in distributed applications
    • 用于最佳地折中分布式应用程序中的复制开销和一致性级别的系统和设备
    • US08037023B2
    • 2011-10-11
    • US12135489
    • 2008-06-09
    • Zhen LiuHonghui XiaHao YangFan Ye
    • Zhen LiuHonghui XiaHao YangFan Ye
    • G06F17/30
    • G06F17/30578Y10S707/99932Y10S707/99953Y10S707/99955
    • Methods and systems are provided for optimally trading off replication overhead and consistency levels in distributed data replication where nodes are organized in a hierarchy. The root node has the original data that need to be replicated at all other nodes, and the replicated copies have a freshness threshold that must be satisfied. The data are propagated through periodic updates in the hierarchy. Each node periodically sends data to its child nodes. Given the freshness threshold, an algorithm and its distributed protocol can determine the optimal update period for each link of the hierarchy such that the freshness threshold is satisfied for every node and the overall replication overhead is minimized. The systems and methods can be used in any scenario where replicated data have consistency requirements, such as in a replicate overlay assisted resource discovery system.
    • 提供了方法和系统,用于最佳地折中分布式数据复制中的复制开销和一致性级别,其中节点被组织在层次结构中。 根节点具有需要在所有其他节点进行复制的原始数据,并且复制副本具有必须满足的新鲜度阈值。 数据通过层次结构中的定期更新进行传播。 每个节点周期性地向其子节点发送数据。 给定新鲜度阈值,算法及其分布式协议可以确定层次结构的每个链路的最佳更新周期,使得每个节点满足新鲜度阈值,并将整体复制开销最小化。 系统和方法可以在复制数据具有一致性要求的任何情况下使用,例如在复制覆盖辅助资源发现系统中。
    • 18. 发明授权
    • Estimating the geographical position of an apparatus based on its proximity to other apparatuses
    • 基于其与其他设备的接近度来估计设备的地理位置
    • US09161162B2
    • 2015-10-13
    • US13995258
    • 2010-12-29
    • Dong LiuHao Yang
    • Dong LiuHao Yang
    • H04W24/00H04W4/02H04W64/00
    • H04W4/02H04W64/00
    • An example apparatus, such as a position server, is caused to receive proximity information from a number of mobile apparatuses located remote from the apparatus, and receive observed current locations from at least some but not all of the mobile apparatuses. The apparatus is also caused to determine a proximity relation between certain ones of the number of mobile apparatuses, where the proximity is reflected by the proximity information received from the mobile apparatuses. And the apparatus is caused to calculate an estimate of a current location of at least one of the one or more remaining mobile apparatuses as a function of the proximity relation between certain ones of the number of mobile apparatuses, and as a function of the observed current locations of the one or more mobile apparatuses.
    • 使诸如位置服务器的示例设备从位于远离设备的多个移动设备接收邻近信息,并且从至少一些但不是全部的移动设备接收观察到的当前位置。 该装置还用于确定多个移动装置中某些个体之间的接近度关系,其中接近度由从移动装置接收的邻近信息反映。 并且使得该装置根据多个移动装置中的某些移动装置的接近度关系来计算一个或多个剩余的移动装置中的至少一个的当前位置的估计,并且作为所观察的电流的函数 一个或多个移动装置的位置。