Bandwidth-satisfied relay-selection scheme for wireless multicast networks with cooperative communications

Cooperative communication is an efficient technology to achieve high bandwidth demands and wide error-prone client coverage. However, the previous cooperative multicast protocols suffer from bandwidth-violation problem while selecting relay nodes, namely, the cooperative hidden route problem (CHRP) by distributed protocols in wireless multicast networks. In this paper, a novel relay selection algorithm that can avoid the CHRP is proposed, and a bandwidth-satisfied multicast cooperative relay selection scheme is constructed. Moreover, to optimize the cooperative performance, we provide theory analysis for selecting a relay. Simulations results show that the proposed algorithm can efficiently mitigate multicast transmission errors and improve network throughput in a distributed wireless environment by more than 10%.