D2D网络功率和频谱资源分配策略

D2D Network Power and Spectrum Resource Allocation Strategy

针对蜂窝通信系统高能耗、低通信资源利用率和低信道利用率的问题,提出一种基于能量效率(energy efficiency,EE)与频谱效率(spectral efficiency,SE)联合优化的网络资源分配策略.首先,在保证通信用户服务质量(quality of server,QoS)的前提下,提出一种基于启发式算法的信道选择策略,为系统内的D2D(device-to-device)用户分配信道复用资源;其次,在通信系统干扰门限和回程容量限制约束下,利用Lagrange对偶分解迭代实现系统功率和频谱资源分配.仿真结果表明,该算法能有效扩充系统内D2D用户的数量,提高能量效率及信道利用率,增加频谱利用率,为D2D用户分配最优的功率,增强业务承载能力,降低通信系统能耗并减少资源浪费.

Aiming at the problems of high energy consumption,low communicati on resource utilization and low channel utilization of cellular communication systems,we proposed a network resource allocation strategy based on the joint opt imization of energy efficiency(EE)and spectral efficiency(SE).Firstly,on the premise of ensuring the quality of service of communication user s,a channel selection strategy based on a heuristic algorithm was proposed to allocate channel multiplexing resources for D2D users in the system.Secondly,un der the constraints of the interference threshold and backhaul capacity of the communication system,the Lagrange dual decomposition iteration was used to reali ze the system power and spectrum resource allocation.Simulation results show that the algorithm can effectively expand the number of D2D users in the system,i mprove 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.