华南理工大学学报(自然科学版) ›› 2013, Vol. 41 ›› Issue (11): 36-42.doi: 10.3969/j.issn.1000-565X.2013.11.006

• 电子、通信与自动控制 • 上一篇    下一篇

LTE自优化网络中MRO与MLB间冲突避免策略

黄妙娜1 冯穗力1† 陈军1 张永忠2   

  1. 1.华南理工大学 电子与信息学院,广东 广州 510640; 2.中国电子科技集团公司 第七研究所,广东 广州 501310
  • 收稿日期:2013-05-06 修回日期:2013-07-30 出版日期:2013-11-25 发布日期:2013-10-11
  • 通信作者: 冯穗力(1955-),男,教授,主要从事无线通信网络技术研究. E-mail:fengsl@scut.edu.cn
  • 作者简介:黄妙娜(1983-),女,博士生,主要从事LTE自优化网络技术研究.E-mail: huang.mn@mail.scut.edu.cn
  • 基金资助:

    国家 “863” 计划项目(2012AA050801)

Strategy of Avoiding Conflict Between MRO and MLB in LTE Self- Optimizing Networks

Huang Miao- na1 Feng Sui- li1 Chen Jun1 Zhang Yong- zhong2   

  1. 1.School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.The Seventh Institute,China Electronics Technology Group Corporation,Guangzhou 501310,Guangdong,China
  • Received:2013-05-06 Revised:2013-07-30 Online:2013-11-25 Published:2013-10-11
  • Contact: 冯穗力(1955-),男,教授,主要从事无线通信网络技术研究. E-mail:fengsl@scut.edu.cn
  • About author:黄妙娜(1983-),女,博士生,主要从事LTE自优化网络技术研究.E-mail: huang.mn@mail.scut.edu.cn
  • Supported by:

    国家 “863” 计划项目(2012AA050801)

摘要: 提出了一种利用最优化理论的移动鲁棒性优化( MRO) 与移动负载均衡( MLB)间冲突避免策略.该策略考虑用户在时间 T 内接收信号强度的变化量,对不同用户动态调整切换范围,并对 MLB 问题进行数学建模,利用最优化理论设计目标优化函数,将切换参数 O 的取值范围作为约束条件,求得切换参数的最优值.仿真结果表明,该方法不仅能避免 MRO 与 MLB 间冲突的发生,而且能更有效地均衡小区负载,降低重载小区用户接入阻塞率、无线链路失败率,提高网络平均吞吐量.

关键词: 自优化网络, 冲突避免, 动态调整, 最优化理论, 线性规划

Abstract:

Proposed in this paper is an optimization theory- based strategy of avoiding the conflict between MRO(Mobility Robustness Optimization) and MLB (Mobility Load Balancing).This strategy takes into considerationthe variation of users' received signal reference power in the period of T,so that the handover range for different userscan be dynamically adjusted.Moreover,based on the optimization theory,optimization objectives are designed forthe modeled MLB problem,and the allowed range of handover parameter O is set as the constraint to obtain theoptimal value of the handover parameter.Simulation results indicate that the proposed strategy not only avoids theconflict between MRO and MLB but also balances the cell load effectively,and that it helps to decrease the callblocking ratio and radio link failure as well as increase the network throughput.

Key words: self-optimizing network, conflict avoidance, dynamic adjustment, optimization theory, linear programming

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