可见光通信系统微小区预切换算法的研究

Research on Micro-cell Pre-handover Algorithm in Visible Light Communication System

室内可见光通信系统是缓解无线频谱资源紧缺以及未来用户群接入需求日趋增长问题的有效解决方案之一,文章针对室内可见光通信系统的链路切换算法进行研究分析,提出了一种基于时隙计算的预测切换算法,分析了链路切换算法对系统的重要性,并利用到达时间差定位法和探测时隙提出了一种基于时隙计算的预测切换算法,该算法可以提前预测终端需要切换到哪个微小区,从而降低系统的切换开销。最后对该算法提升室内可见光通信系统切换性能的能力进行了仿真测试,仿真结果表明,该算法有较高的预测切换成功率,可以高效地减少系统的切换开销。

Indoor visible light communication system is one of the effective solutions to alleviate the problem of shortage of wireless spectrum resources and the growing demand for future user group access.In this paper,we first study and analyze the link switching algorithm of indoor visible light communication system.Then we propose a slot-based calculation Predictive switching algorithm.Next,we analyze the importance of the link switching algorithm to the system,and use the arrival time difference positioning method and the detection slot to design a predictive switching algorithm based on slot calculation.The proposed method can predict which small terminal needs to be switched to area,thereby reducing the switching overhead of the system.Finally,a simulation is conducted to test the switching performance of the indoor visible light communication system.The results show that the algorithm has a higher predicted switching success rate,which can effectively reduce the system switching overhead.