LTE-A系统中FSHO切换的优化方案

无线资源管理是LTE-A学习的重要部分， FSHO是LTE-A的一种重要切换算法， FSHO服务分为VoIP服务和非VoIP服务，非VoIP服务始终只有一个基站为移动终端服务， FSHO的VoIP服务是通过源基站和目标基站共同服务。相对于LTE-A的硬切换， FSHO增加了切换时延，使得切换中断概率比较高。提出了基于多载波切换的优化FSHO方案，主要在VoIP服务过程中加入了多载波切换的方法。原理分析和仿真结果表明，优化的FSHO算法不仅降低了切换中断的概率，而且提高了VoIP服务的质量。

Optimized Fractional Soft Handover Scheme for LTE-Advanced System

Radio resource management is important aspect to investigate as part of the LTE-Advanced study.And FSHO is an important handover scheme in LTE-A. FSHO sorts the service to VoIP service and non-VoIP service. Non-VoIP service are transmitted by source eNodeB or target eNodeB. VoIP services are transmitted from both source eNodeB and target eNodeB. Compared to hard handover, FSHO increases the time delay and outage probability. In this paper, we propose an optimized fractional soft handover scheme based on FSHO. The main idea is to Multi-carrier Handover Method for VoIP. The theoretical analysis and simulation results show that the optimized proposed fractional soft handover not only attains the lowest handover outage probability but also improve the reliability of VoIP service.