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Performance comparisons of RIO and RIO-DC for QoS guarantee of the Assured Service in Differentiated Services  

Hur, Kyeong (고려대학교 전자공학과)
Shin, Dong-Beom (한국전자통신연구원 네트워크 연구소)
Lee, Sang-Woo (한국전자통신연구원 네트워크 연구소)
Eom, Doo-Seop (고려대학교 전자공학과)
Tchah, Kyun-Hyon (고려대학교 전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.4C, 2002 , pp. 342-352 More about this Journal
Abstract
In this paper, we compare the performances of RIO and RIO-DC buffer management schemes for DiffServ AF PHB standardized in IETF. For the comparison, we relatively differentiate maximum delay for each Assured Service subclass in Differentiated Services by allocating bandwidth to each subclass differently. In addition, we set the values of RIO and RIO-DC parameters considering the buffer size determined by the network topology and the ratio of bandwidth allocated to each subclass. In this simulation environment, the performances of RIO and RIO-DC schemes are analyzed focusing on the throughput of the In-profile traffic, the link utilization and the fairness. Simulation results show that the performance of RIO-DC scheme is comparable to that of RIO scheme with regard to the throughput of the In-profile traffic and the link utilization. However, under the simulation condition RIO-DC scheme improves the fairness between flows much better than RIO scheme.
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