2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (2009)
Oct. 12, 2009 to Oct. 14, 2009
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/WiMob.2009.13
Cooperative communication has been recently proposed as a powerful means to improve network performance in wireless networks. However, most existing work focuses solely on one-hop source-destination cooperation. In this paper, we propose a novel cooperative MAC mechanism that is specially designed for two-hop cooperation communications where the source node and the destination node cannot hear each other directly. In this case, cooperative communication is operated in a two-hop manner and transmit-diversity is achieved by the reception of the same data packet forwarded through multiple relays towards a single destination. The proposed scheme employs an efficient relay selection algorithm to maximize cooperation benefits and can avoid collision effectively. Numerical results show that compared with the original non-cooperative protocol, significant throughput improvement and access delay reduction have been achieved with our two-hop cooperative MAC mechanism.
F. Y. Li and H. Jiao, "Cooperative Medium Access Control in Wireless Networks: The Two-Hop Case," 2009 IEEE International Conference on Wireless and Mobile Computing, Networking and Communications(WIMOB), Marrakech, Morocco, 2009, pp. 13-18.