Efficient Retransmission Methods in Wireless MAC Protocol for Multicast

Authors:
Sung Won Kim;Byung-Seo Kim;Randy L. Ekl
Affiliations:
Department of Information and Communication Engineering, Yeungnam University, Gyeongsangbuk-Do, Korea;Department of Computer and Information Communications Engineering, Hongik University, ChungChungnam-do, Korea;Advanced Technology and Research, Motorola Inc, Schaumburg, USA
Venue:
Wireless Personal Communications: An International Journal
Year:
2012

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Abstract

Recent studies on reliable wireless multicast have focused on sending acknowledgement packets from all member stations to the source. Although these studies provide methods of improving the reliability, there have not been any studies on retransmission methods for wireless multicast. Multicast packets are retransmitted based on the unicast transmission rule, which retransmits until all members successfully receive the packet. In this paper, an efficient retransmission method is proposed. The retransmission lasts until the target packet delivery ratio of each member is met. Moreover, the contention window size for retransmission is adjusted based on the reception status of the previous transmission. The performance of the proposed wireless multicast is evaluated by extensive simulations.