A fair power-efficient cross-layer relay selection based on Priority and Buffer Management

Recently, cross-layer relay selection methods are proposed in favor of providing QoS requirements of users in multi-user cooperative networks as a way to achieve a better performance. However, most of them have failed to achieve an acceptable level of fairness in satisfying diverse QoS requirements in a multi-media service. On the other hand, reducing consumed power is essential today in cooperative networks. In this paper, we aim to improve fairness and reduce consumed power in a multi-user cooperative network with multi-media service. For this purpose, we propose a novel algorithm based on management of relay nodes' buffer space and the priority concept during relay selection. Simulation results certify that our algorithm outperforms previous ones in terms of system spectrum efficiency, fairness, and average consumed power.