Mark-Reverse Explicit Congestion Notification : Concept, Analysis and Evaluation

概要

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In this paper, we propose a new congestion notification scheme, named as Mark-Reverse ECN(Explicit Congestion Notification)for satellite IP networks. When congestion is beginning to occur on a link, our scheme notifies a source node more quickly than a conventional scheme, i.e., Mark-Tail ECN. Instead of a packet on for- warding path, we marks an acknowledge (ACK) packet on backwarding path which is heading for the source node. We expect that latency time for congestion notification will be reduced and congestion control will thus work more accurately and effectively. Simulation and analysis are conducted for performance evaluation. Through simulation, we compare and evaluate performance of Mark-Reverse ECN and Mark-Tail ECN. Mark-Reverse ECN shows high throughput and low packet drop ratio in satellite IP networks. In analysis, we propose a new analytical model of TCP NewReno supporting ECN. This analytical model takes the packet drop ratio and the packet mark ratio into account for computing delay time and throughput. Analytical results also show superiority of our scheme, correspondingly. A considerably small discrepancy between the results veri£y our simulation and analysis.
一般社団法人電子情報通信学会の論文
2012-09-13