LTE-A系统中基于多目标的CoMP切换算法研究

摘要

协作多点传输（CoMP）作为LTE-A系统中的一项关键技术，能消除或降低相邻小区间干扰，提升边缘用户的传输性能。由于这一新技术的引入，传统切换算法已经不能适应CoMP技术的切换要求，由此根据CoMP中联合处理（JP）技术的特点提出了一种新的切换算法。首先分析CoMP技术的实现原理并阐述了切换的概念，然后对传统A3切换算法和新的切换算法进行了研究，最后对两种算法的性能进行了仿真。结果表明：与传统A3切换算法相比，新的切换算法能提高系统吞吐量和减少系统切换总次数。%The CoMP technology,as a key technology in LTE -A system,can eliminate or reduce the interference between the adjacent cells and improve the transmission performance for cell -edge users.Due to the introduction of this new technology,the traditional handover algorithm no longer adapts to the demand of the handover of CoMP technology.Therefore,a new handover algorithm is proposed according to the characteristic of Joint Processing technology in the CoMP technology.In this paper,the principle of CoMP technology is analyzed and the concept of handover is elaborated at first,then the traditional A3 handover algorithm and the new handover algorithm are studied,finally the performances of two algorithms are simulated.The simulation results show that the new handover algorithm can improve the system throughput and reduce the total handover number of system compared with the traditional A3 handover algorithm.