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A Mechanism to Improve the Fairness of the AF Service in Diffserv Network  

모상덕 (광운대학교 전자통신공학과)
정광수 (광운대학교 전자공학부)
Publication Information
Journal of KIISE:Information Networking / v.31, no.5, 2004 , pp. 469-481 More about this Journal
Abstract
Previous works for the AF(Assured Forwarding) service in the Diffserv network have no sufficient consideration on the fairness of bandwidth share based on RTTs, the target rates, and the impact of UDP against TCP. In this paper, in order to solve these problems, we propose a FDSA(Fair Differentiated Service Architecture) composed of TRA3CM(Target rate and RTT Aware 3 Color Marking) and TRBD(Target Rate Based Dropping) mechanisms. The TRA3CM and TRBD mechanisms provide three color marking and fair transmission rates among aggregate flows by considering RTT, target rate, and UDP flows simultaneously. In the results of comparing the performance among existing mechanisms and the TRA3CM-TRBD, the TRA3CM-TRBD mechanism was able to mitigate the RTT and UDP effect better than the former. The TRA3CM-TRBD is shown to provide good performance for transmission rates proportional to various target rates.
Keywords
Diffserv; FDSA; TRA3CM; TRBD; RTT; AF Service; Target Rate; Fairness;
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