Optimal Retransmission Timeout Selection for Delay-Constrained Multimedia Communications (TP-P3)

Author(s) : Jianfei Cai (Nanyang Technological University, Singapore) Wenning Zhan (Nanyang Technological University, Singapore) Zhihai He (University of Missouri-Columbia, USA)

Abstract : The RTO (retransmission timeout) selection is a fundamental problem for any acknowledgment-based transmission. Conventional approaches simply choose RTO according to the estimated round-trip time and do not consider the delay constraint of multimedia applications and the packet loss rates provided by communication networks. In this research, we propose a novel algorithm for optimal RTO selection for delay-constrained multimedia communications based on a network model. By appropriately choosing the RTO, we are able to achieve the optimal tradeoff between the error probability and the rate cost. Experimental results demonstrate improved performance.

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