一種適用於無線網路中不同行動能力的資源管理架構

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姓名

汪永興(Yun-Shin Wang) 查詢紙本館藏

畢業系所

資訊工程學系

論文名稱

一種適用於無線網路中不同行動能力的資源管理架構
(A Resource Management Scheme for Diverse Movement in Wireless Networks)

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摘要(中)

隨著無線網路技術的成長，使用者會期待未來能提供QoS的服務，而要達到QoS的服務就必須要能夠有效率良好的資源管理機制。從使用者的角度來看，速度比較快的使用者被強制中斷的機會比較高。而雖然在現今的階層式細胞(hierarchical cell)(HC)或是沿著移動路徑做資源預留的方式(path reserved)(PR)能夠減少快速度使用者被中斷的機率，但是必須要有另外的大半徑的細胞(macro-cell)來服務或是需要保留較多的系統資源，而且使用大半徑的細胞會有更大範圍的干擾。在這篇論文中我們提出一個虛擬的階層式細胞(virtual hierarchical cell)的概念，同時我們也提出了兩個實作方法。一種叫做Channels for High-speed Users (CHU)，另一種叫做Load-related Path Reserved (LPR)。在我們提的架構中，每一個微細胞不需要保留過多的資源。根據實驗的結果，顯示出在系統使用效率上，我們所提的方法會比階層式細胞架構或是沿著移動路徑來預留資源的架構來的好，而只需要犧牲一點點的被中斷的機率。因此我們所提的這兩種方法非常適合於一般的micro-cell的架構。

摘要(英)

With the growing of wireless networks technologies, mobile users are expected to demand the quality of service (QoS). Therefore, the efficient bandwidth management is necessary. In the users’ perspective, the mobile user with higher velocity would suffer high dropping probability. Although the existed hierarchical cell scheme (HC) and path reserved (PR) scheme could decrease the dropping probability of high-speed users, it needs extra macro-cell to serve those users or reserved more resource. In addition, using the macro-cell would cause the wider interference. In this paper, we proposed a concept which is called virtual hierarchical cell and also proposed two implements, one is called Channels for High-speed Users (CHU), the other is called Load-related Path Reserved (LPR). In our schemes, each micro-cell doesn’t need to reserve too many resources. The simulation result shows that the system utilization is better than HC or PR, and just sacrifices a little dropping probability performance. Therefore, those two implements are especially suitable for one-layer micro-cells architecture.

關鍵字(中)

★ 服務品質
★ 階層細胞
★ 微細胞
★ 行動能力

關鍵字(英)

★ Quality of Service (QoS)
★ dropping probability
★ mobility
★ micro-cell
★ hierarchical cell

論文目次

Chapter 1. 1
Introduction 1
1.1 Backgrounds 1
1.2 Motivation and Challenge 4
1.3 Contributions of This Thesis 5
Chapter 2. 8
Related Works 8
2.1 Resource Reservation 8
2.2 Hierarchical Cell Schemes 15
2.3 User's Location and Velocity 19
Chapter 3. 23
The Proposed Schemes 23
3.1 System Description 23
3-2. Estimate the Road 24
3-3. Channels for High-speed Users (CHU) 26
3.3.1 CHU Concept 26
3.3.2 Admission Control for New Call in CHU 28
3.3.3 Admission Control for Handoff Call in CHU 30
3-4. Loading-related Path Reserved (LPR) 31
3.4.1 LPR Concept 31
3.4.2 Reserved Degree and Path Length 33
3.4.3 Admission Control in LPR 35
3-5. Other Types of Users 37
Chapter 4. 39
Simulation Experiments 39
4.1 Simulation Environment 39
4.2 Simulation Result 41
Chapter 5. 53
Conclusion and Future Works 53
Reference 54

參考文獻

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指導教授

吳曉光(Hsiao-Kuang Wu)

審核日期

2004-11-11

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