針對室內基地台網路降低位置更新成本之研究

Reducing Location Update Cost in a Femtocell Network

王信能(Shin-Neng Wang)

指導教授 ： 林風

國立臺灣大學/電機資訊學院/資訊網路與多媒體研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.10688

摘要

低功率低成本的室內基地台技術被提出來以彌補Macro基地台涵蓋範圍與傳輸速率之不足。此種網路稱為室內基地台網路(Femtocell Network)。Macro基地台涵蓋每一個室內基地台而且與每一個室內基地台擁有不同的位置區域識別碼(Location Area ID)。當行動裝置在室內基地台與Macro基地台之間有高頻率的移動時，會導致頻繁的位置區域識別碼更新程序執行。本論文在室內基地台網路中提出細胞優
先權切換機制(Cell Priority Transition)，減少位置區域識別碼更新所消耗的成本。我們提出數學分析模型和電腦模擬來研究細胞優先權切換機制的效能。研究顯示細胞優先權切換機制能夠有效地減少位置區域識別碼更新所消耗的成本。

關鍵字

室內基地台網路 ； 位置更新 ； 移動性管理

並列摘要

The indoor femtocell technology (known as femto BSs) with low power and low cost is proposed to provide comprehensive indoor wireless converge of macro BSs, which is known as the femtocell network. The Location Area ID for a femtocell is different from that for the macrocell that covers the femtocell, which results in frequent location update
procedure (i.e., the location update cost increases) when the Mobile Station has a significant level of mobility between femtocells and macrocells. We propose the Cell Priority Transition (CPT) mechanism to reduce the location update cost for the femtocell network. The analytical models and simulation experiments are conducted to investigate the performance of the CPT mechanism. Our study shows that the proposed CPT mechanism significantly reduces the location update cost for femtocell networks.

並列關鍵字

Femtocell Network ； Location Update ； Mobility Management

參考文獻

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