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    • 73. 发明授权
    • Method, apparatus, and system for measuring asymmetric delay of communication path
    • 用于测量通信路径不对称延迟的方法,装置和系统
    • US08750356B2
    • 2014-06-10
    • US13406280
    • 2012-02-27
    • Song Wang
    • Song Wang
    • H04B3/46
    • H04L43/0864H04J3/0667
    • A method for measuring the asymmetric delay of a communication path includes: sending, by a first node, a first delay measurement message to a second node whose local clock is synchronized with the first node; receiving, by the first node, a second delay measurement message sent by the second node; calculating, according to time when the first delay measurement message is sent by the first node and time when the second node receives the first measurement message, a communication path delay in a direction towards the second node; calculating, according to time when the second node sends the second delay measurement message and time when the second measurement message is received by the first node, a communication path delay in a direction leaving the second node; and obtaining a measured value of the asymmetric delay of the communication path according to the communication path delays in the two directions.
    • 一种用于测量通信路径的非对称延迟的方法包括:由第一节点将第一延迟测量消息发送到其本地时钟与第一节点同步的第二节点; 由所述第一节点接收由所述第二节点发送的第二延迟测量消息; 根据第一节点发送第一延迟测量消息的时间和第二节点接收到第一测量消息的时间,计算朝向第二节点的方向的通信路径延迟; 根据第二节点发送第二延迟测量消息的时间和第一节点接收到第二测量消息的时间,计算在离开第二节点的方向上的通信路径延迟; 以及根据两个方向上的通信路径延迟获得通信路径的不对称延迟的测量值。