关键词: 链路带宽测量, 非对称链路, 网络仿真, 测量报文对

Abstract: Asy_pathchar is an asymmetric link bandwidth measurement algorithm based on calculating the relationship between the RTT latency and the measuring packet size. The problem of this algorithm is analyzed and a new algorithm named Asy_pro is put forward. Network simulation experiments’ result validates that the new algorithm has improved the overall performance on measuring time-consuming，network bandwidth-consuming and anti-jamming，all of which makes it a more robust and practicably algorithm.

Key words: link bandwidth measurement, asymmetric link, network simulation, measuring packet pair