臺灣博碩士論文加值系統

在這篇論文中，我們為了降低行動用戶在無線行動網路裡位置更新的花費，因此提出一個合作式的方法來處理在無線行動網路下用戶的位置更新。此方法主要根據用戶位置更新與Paging的歷史資訊來判斷用戶的關係，並根據此關係動態地降低行動用戶位置的更新機率以減少位置更新的花費。由於位置更新的花費和paging的花費是相互權衡的，所以我們將合作式位置更新法與同時搜尋法加以整合以有效抑制paging的花費，使得行動管理的總成本可以有效降低。

In this paper, in order to reduce the location update cost in wireless mobile networks, we propose a cooperative location update scheme. The proposed scheme first discovers the statistical relation between mobile stations according to their history of location update and paging. In order to reduce the total cost of mobility management, we propose integrating the cooperative location update scheme with the concurrent search scheme. We use analytical results and simulation results to justify the usage of the proposed approach.

致謝 .........................................................................I
中文摘要 ........................................................................II
Abstract .......................................................................III
目錄 .......................................................................IV
圖目錄 ........................................................................V
第一章 緒論................................................................1
1-1 行動通訊網路................................................1
1-2 行動管理........................................................4
1-3 Paging文獻探討...........................................5
1-4 Location Update文獻探討..........................7
第二章 系統模型........................................................9
2-1 模型架構........................................................9
2-2 合作式位置更新法........................................9
2-3 行動用戶位置的機率轉換矩陣..................10
第三章 行動用戶關係偵測法..................................13
3-1 行動用戶之間的平均距離..........................13
3-2 平均距離偵測法..........................................14
3-3 Likelihood Ratio Test 偵測法..................16
3-4 演算法..........................................................19
第四章 模擬結果與分析..........................................21
4-1 模擬環境與參數..........................................21
4-2 模擬結果......................................................22
第五章 結論..............................................................27
參考文獻 ......................................................................28

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