Abstract: Aiming at the problems of high energy consumption, low communication resource utilization and low channel utilization of cellular communication systems, we proposed a network resource allocation strategy based on the joint optimization of energy efficiency (EE) and spectral efficiency (SE). Firstly, on the premise of ensuring the quality of service of communication users, a channel selection strategy based on a heuristic algorithm was proposed to allocate channel multiplexing resources for D2D users in the system. Secondly, under the constraints of the interference threshold and backhaul capacity of the communication system, the Lagrange dual decomposition iteration was used to realize the system power and spectrum resource allocation. Simulation results show that the algorithm can effectively expand the number of D2D users in the system, improve energy efficiency and channel utilization, increase spectrum utilization, allocate optimal power for D2D users, enhance the service carrying capacity, reduce the energy consumption of communication system  and reduce the waste of resources.

Key words: plateau and mountainous area, channel allocation, power allocation, spectrum allocation