Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (11): 36-42.doi: 10.3969/j.issn.1000-565X.2013.11.006

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

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)

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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

CLC Number: