LTE-A网络下能源高效的M2M上行子载波和功率分配问题研究  

Study on Energy Efficient M2M Uplink Subcarrier and Power Allocation in LTE-A Network

作　　者：何英庆 李宁 王聪 陈彦成 徐键卉 HE Ying-qing;LI Ning;WANG Cong;CHEN Yan-cheng;XU Jian-hui(Institute of Communication Engineering,PLA Army Engineering University,Nanjing 210007,China)

机构地区：[1]陆军工程大学通信工程学院

出　　处：《计算机科学》2019年第7期61-66,共6页Computer Science

基　　金：国家自然科学基金项目(61771486,61571463)资助

摘　　要：在M2M通信中,提高设备的能源效率、延长设备的电池使用寿命是一个关键问题。文中研究了LTE-A网络中M2M上行通信的联合子载波和功率分配的能源效率问题,在保证M2M设备的基本传输时延以及LTE-A上行资源分配约束的前提下,得到资源分配的优化问题;由于直接求解该问题的计算复杂度相当高,因此文中进一步提出一种基于拉格朗日乘数法的子载波和功率分配算法,该算法在降低计算复杂度的同时,能够获得更低的功率消耗以及更高的能源效率。仿真结果表明,所提算法在功率消耗和能源效率方面更接近最优算法。Improving the energy efficiency of devices in M2M communication,and prolonging the lifetime of M2M devices which are powered by battery is a critical problem.In this paper,the energy efficient sub-channel and power allocation problem was studied for M2M communication over LTE-A cellular uplinks.Under delay requirement of M2M devices and resources allocation restrains of uplink communication,the sub-channel and power allocation problem was formulated.Due to the high computational complexity of solving this problem directly,a lagrange-basic resources allocation algorithm was further proposed in this paper,which can obtain acceptable power and energy efficiency performances with less complexity.The simulation results show that the proposed algorithm outperforms the Greedy algorithm and is more close to the optimal algorithm in power and energy efficiency performances.

关 键 词：M2M通信 LTE-A 能源效率 上行调度 资源分配 

分 类 号：TN929.5[电子电信—通信与信息系统]