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LTE位置管理中信令开销的分析 被引量:4

Signaling Cost Analysis of Location Management in Long Term Evolution
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摘要 为了克服2G和3G移动通信网络位置管理方案的缺陷,4G长期演进(Long Term Evolution,LTE)采用了基于跟踪区列表(Tracking Area List,TAL)的位置管理方案。基于TAL的位置管理方案的性能取决于TAL分配方案。考虑到本地移动设备(User Equipment,UE)的活动区域相对固定,该文提出一种嵌入式马尔科夫链模型,用于分析本地UE的基于TAL的位置管理方案的信令开销。推导得到位置更新开销和寻呼开销的数学公式。利用这些公式,可搜索得到能使信令开销最低化的最佳TAL分配方案。 In order to tackle the defects of the Location Management (LM) scheme used in second generation (2G) and third generation (3G) mobile networks, forth generation (4G) network Long Term Evolution (LTE) uses a new LM scheme, which is called a Tracking Area List (TAL)-based LM scheme and the signaling cost of the TAL-based LM scheme is determined by the allocation of TALs. This paper develops a mathematical model of embedded Markov chain to analyze the signaling cost of the TAL-based scheme for a local User Equipment (UE) whose activity region is relatively fixed. Mathematical formulas for the LU cost and the paging cost are derived. With these formulas, an optimal TAL allocation strategy that can minimize the signaling cost can be found.
作者 马俊超 王献
出处 《电子与信息学报》 EI CSCD 北大核心 2014年第10期2320-2325,共6页 Journal of Electronics & Information Technology
基金 国家973计划项目(2012CB316100) 国家自然科学基金(61171096) 中央高校基本科研业务费专项资金(SWJTU12CX093) 四川省青年科技基金(2014JQ0041)资助课题
关键词 移动通信 长期演进 跟踪区列表分配方案 位置管理 本地用户 嵌入式马尔科夫链 Mobile communication Long Term Evolution (LTE) Tracking Area List (TAL) allocation scheme Location Management (LM) Local resident user Embedded Markov chain model
作者简介 马俊超:男,1989年生,硕士生,研究方向为LTE位置管理. 通信作者:王献drwangxian@gmail.com男,1979年生,副教授,研究方向为无线资源管理.
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