Abstract:

A Fuzzy Comprehensive Evaluation based loss differentiation algorithm for wired/wireless hybrid network is brought out, which takes both average PLR（Packet Loss Rate）and the probe packet ROD（Relative One-way Delay）in loss pair as loss differentiation parameters ，arranges them dynamic weight values in different network environments, and then distinguishes the wireless error loss from the congestion loss according to the fuzzy comprehensive evaluation principle. Unlike most of the current loss discrimination algorithms, the proposed algorithm does not take one loss differentiation parameter and simply set its threshold of one loss pattern, but takes different parameters and arrange them dynamic weight values in different network conditions, and then uses fuzzy comprehensive evaluation model for distinction. Simulation demonstrated that the algorithm has better network adaptability.

Key words: loss differentiating, Fuzzy comprehensive evaluation, heterogeneous network, TCP