【摘要】 时间同步是测试中的一个难点,现有的测试方法大多都是测试往返时延,以避开时间同步,但得到的抖动误差很大,所以对单向时延的精确测量是获取网络抖动的前提。该文通过测试发送端和接收端的往返时延,结合RTP协议和数学公式的推导,给出通过测得的往返时延计算出单向时延的方法,并对实际的多媒体网络性能进行了测试。更多还原

【Abstract】 Synchronization is a difficulty in performance testing.Previous tests use round-trip delay to avoid the synchronization problem,but the jitter error can not be neglected.So precise testing one-way delay is very important.The paper provides a way,using round-trip delay to compute one-way delay,through transmitting and accepting delay.Based on this method,it tests a real multimedia network.更多还原