摘要
进入蜂窝网络的用户终端(UTE)因具有突发性和时变性,往往导致其业务载荷流量无法在全网均衡分布。目前关于均衡分布的研究多数是围绕转移热点小区的重载来开展,忽略了热点请求被源小区和目标小区来回循环切换的风险。为了解决被忽略的风险问题,文中在既有研究的基础上提出一种同构网中基于风险规避的LTE系统流量工程控制算法。该算法首先通过风险规避机制排查目标小区及其周边小区潜在的重载风险;再通过计算优先权将筛选出来的可用目标小区形成一个小区列表;最后根据优先级将热点小区UTE的业务载荷流量请求平滑地分流到目标轻载小区。实验表明,文中提出的流量工程控制算法在改善LTE系统服务质量(Qo S)问题上较传统的研究有显著提升。
The user terminals（ UTE） entering the cellular network often have their traffic load flow not balanced in the whole network because of abrupt and time-varying. Most of the current research on equilibrium distribution is carried out around the heavy load of the transfer hotspot area. However,the risk that the hotspot request is cycled back and forth between the source cell and the target cell is ignored. In order to solve the neglected risk problem,this paper presents a traffic engineering control algorithm for LTE system based on risk aversion in isomorphic networks. Firstly,the potential risk of heavy investigation target cell and its surrounding area through risk aversion mechanism. Secondly,the available target cell by calculating the priority will be selected to form a cell list. Finally,the traffic load flow requests of the hot cell UTE are smoothly shunted to the light load cell of the target according to priority. The experimental results show that the proposed traffic engineering control algorithm in the paper has significantly improved the LTE system quality of service（ Qo S） problem compared with the traditional research.
作者
林薇
LIN Wei(School of Engineering,Fnzhon Institute of Technology,Fnzhou 350506,Chin)
出处
《信息技术》
2018年第8期74-77,81,共5页
Information Technology
基金
福建省教育厅科技项目(JA15600)
