CAJ | 학술논문

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。
위료극복2G화3G이동통신망락위치관리방안적결함，4G장기연진(Long Term Evolution, LTE)채용료기우근종구렬표(Tracking Area List, TAL)적위치관리방안。기우TAL적위치관리방안적성능취결우TAL분배방안。고필도본지이동설비(User Equipment, UE)적활동구역상대고정，해문제출일충감입식마이과부련모형，용우분석본지UE적기우TAL적위치관리방안적신령개소。추도득도위치경신개소화심호개소적수학공식。이용저사공식，가수색득도능사신령개소최저화적최가TAL분배방안。
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.