Energy efficient topology control for multi-hop relay cellular networks based on flow management

The rapid expansion of mobile communication networks has led to a significant increase of energy consumption, and the energy consumption of wireless access networks accounted for nearly 90%. As an important form of the wireless access networks, multi-hop relay networks have been widely deployed in the existing cellular networks. Consequently, improving the energy efficient of multi-hop relay cellular networks is crucial for communication networks. In this paper, we design an energy flow management framework for multi-hop relay cellular networks, which contains routing planning, traffic adjustment and power allocation. In order to reduce the energy consumption and guarantee the system capacity, a heuristic algorithm is designed in this paper, which mixes the ant colony algorithm with convex optimization theory. In order to verify the effect of the proposed algorithm, we make numerical simulation and compare it with other network management strategies, such as ant colony algorithm, shortest path routing strategy and greedy algorithm. Simulation results show that by our algorithm, the energy consumption can be reduced compared with the ant colony algorithm, shortest path and greedy algorithm while ensuring the demand of quality of service (QoS).