Energy efficiency optimization for multi-relay cooperative network based on node fairness

In the cooperative relay network, how to improve the energy efficiency of the communication is a very important problem. Further, since user nodes have limited energy, it is necessary to consider fairness of cooperative relay network under the prerequisite of guaranteeing the average use time of all nodes. In this paper, we propose a relay node feedback function, and uses it to show degree of selfishness of the candidate nodes. According to the function, a strategy for relay selection and power allocation optimization based on the weighted fair energy is put forward. The results shown that the proposed method in the system significantly improves the inter-node energy consumption question of unfairness, the average energy consumption per load relay to each node, and finally to the energy balance of the entire network.