A Novel Adaptive RED for Supporting Differentiated Services Network (<Joint Special Issue> Recent Progress in Optoelectronics and Communications)
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概要
- 論文の詳細を見る
Many congestion control mechanisms have been proposed to solve the problems of a high loss rate and inefficient utilization of network resources in the present Internet. This problem is caused by competition between traffic flows while the network is congested. Differentiated Services (DiffServ) architecture permits the allocation of various levels of traffic resource requirements needed for Quality of Service (QoS). Random Early Detection (RED) is an efficient mechanism to pre-drop packets before actual congestion occurs, and it is capable of introducing a random early packet dropping scheme, and based on the queue length in reaching a certain degree of fairness for resource utilization. However, it still suffers from a lack of robustness among light traffic load, or in heavy traffic, load using fixed RED parameters. In this paper, we modified the RED scheme and proposed a novel adaptive RED model, which we named the OURED model, to enhance the robustness of resource utilization so that it could be utilized in the DiffServ edge router. The OURED model introduces two additional packet dropping traces, one is Over Random Early Detection (ORED), which is used to speed up the dropping of packets when the actual rate is higher than the target rate, and the other one is the Under Random Early Detection (URED), used to slow down the packet dropping rate in the reverse situation. The simulation results show that OURED is not only more robust than MRED in resource utilization, but that it also can he implement, efficiently in the DiffServ edge router.
- 社団法人電子情報通信学会の論文
- 2003-05-01
著者
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Hsieh W‐s
The Department Of Computer Science And Engineering National Sun Yat-sen Univeristy:the Department Of
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Huang Mei
Department Of Information Management Tajen Technology College
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Hsieh W‐s
Shu Te Univ. Kaohsiung Twn
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HSIEH Wen-Shyong
Department of Computer Science and Information Engineering, Shu Te University
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LIU Hsu
Department of Computer Sci. & Eng., National Sun Yat-Sen University
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SHER Buh-Yun
Department of Information Science, National Chinese Military Academy
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Liu Hsu
Department Of Computersci. & Eng. National Sun Yat-sen University
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Sher Buh-yun
Department Of Information Science National Chinese Military Academy
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Hsieh Wen-shyong
Department Of Computer Science And Engineering Of National Sun Yat-sen University
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