PERFORMANCE MEASUREMENT IN A PACKET-SWITCHED COMMUNICATION NETWORK

It is disclosed a method for performing a performance measurement on a packet flow transmitted along a path through a packet switched communication network. At least two measurement points implementedon the path calculate a sampling signature for each packet of the flow by applying a hash function to a mask of bits of the packet, and identify a sub-flow of measurement samples as those packets whose sampling signatures are equal to a certain value H*. The measurement points then provide measurement parameters for the measurement samples, which are used for providing performance measurement forthe whole packet flow. Tailoring the length of the sampling signature allows statistically controlling the sampling rate so as to balance the risk of reception sequence errors between measurement samples and the computational effort on one hand, and the accuracy of the measurements provided on the other hand. 公开了种用于在沿着通过分组交换通信网络的路径发送的分组流上执行性能测量的方法。在所述路径上实现的至少两个测量点通过将散列函数应用于分组的比特的掩码来计算用于流的每个分组的采样签名，并且将测量样本的子流识别为采样签名等于特定值H的