具服務品質保證分碼多工多媒體系統之效能改進

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研究生：	黃博俊 Bor-Jiunn Hwang
論文名稱：	具服務品質保證分碼多工多媒體系統之效能改進 Performance Improvement in a CDMA Multimedia Cellular System with QoS Guarantee
指導教授：	吳中實 Jung-Shyr Wu
口試委員:
學位類別：	博士 Doctor
系所名稱：	資訊電機學院 - 電機工程學系 Department of Electrical Engineering
畢業學年度：	89
語文別：	中文
論文頁數：	101
中文關鍵詞：	資源保留、資源借用、頻道資源分配機制、排程機制
外文關鍵詞：	resource reservation, respurce borrowing, channel assignment, schedulling
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Contents
List of FiguresIV
List of TablesVIII
Chapter 1 Introductory Survey1-1
1.1 Background1-1
1.2 Literature Survey1-3
1.3 Motivation and Objective1-4
1.4 Synopsis of Dissertation1-4
Chapter 2 Performance Evaluation in a Multicode CDMA Cellular
System with Resource Reservation2-1
2.1. Introduction2-1
2.2. The Description of System Capacity 2-4
2.2.1 System Capacity 2-6
2.2.2 Multicode System 2-6
2.2.3 System Capacity with Resources Reservation2-8
2.3. Reservation Schemes2-9
2.4. Simulation Model Description and Numerical Results2-11
2.5. Summary2-14
Chapter 3 Performance Improvement in a CDMA Multimedia
Cellular System with Resource Borrowing3-1
3.1. Introduction3-1
3.2. The Description of System Capacity with Resources Reservation3-2
3.3. Resource Borrowing Schemes3-2
3.4. Numerical Results3-4
3.4.1. Scheme A3-5
3.4.2. Scheme B3-6
3.4.3. Scheme C3-78
3.5. Summary3-8
Chapter 4 Channel Assignment based Call Admission Control in
a Multi-Chip Rate CDMA Cellular System4-1
4.1. Introduction4-1
4.2. Capacity Estimation 4-2
4.3. System Model and Channel Assignment Method4-4
4.4. Simulation Model Description and Numerical Results4-7
4.5. Summary4-12
Chapter 5 Call Admission Control based on Scheduling
Algorithms for a Multiple Rate CDMA System5-1
5.1. Introduction5-1
5.2. The Description of System Capacity 5-2
5.2.1 CDMA System Capacity 5-3
5.2.2 Required Bandwidth Determined by Scheduler5-5
5.3. Description of System Model5-5
5.3.1. Call Admission Control Algorithm5-6
5.3.2 Discussion of Constraints 5-8
5.3.3 Functions of Some Components in the Architecture5-9
5.4. Operation of Enforcer, Scheduler and Shaper 5-11
5.4.1 The Operation of Code Pool 5-11
5.4.2 The Operation of Scheduler5-14
5.4.2.1 Scheduling in the CBR Node 5-14
5.4.2.2 Scheduling in the VBR Node5-15
5.4.2.3 Scheduling in the ABR Node5-16
5.4.3 Operation of the Shaper5-16
5.5. Simulation Model Description and Numerical Results5-17
5.5.1 System Performance5-18
5.5.2 Different Tolerable Delays5-21
5.5.3 Different Required SNRths5-22
5.5.4 Compared with Other Algorithms 5-22
5.6. Summary5-23
Chapter 6 Concluding Remarks and Future Research Work6-1
6.1 Summary and Main Contributions6-1
6.2 Suggestion for Future Research6-3
List of Figures
Figure 2-1 Cell network model2-15
Figure 2-2(a) For a new call request2-15
Figure 2-2(b) For a handoff call request2-16
Figure 2-3 System diagram2-17
Figure 2-4(a) Blocking probability for voice calls2-18
Figure 2-4(b) Dropping probability for voice calls2-18
Figure 2-4(c) Blocking probability for data calls2-19
Figure 2-4(d) Dropping probability for data calls2-19
Figure 2-5(a) Blocking probability for voice calls2-20
Figure 2-5(b) Dropping probability for voice calls2-20
Figure 3-1 Resource-borrowing scheme3-10
Figure 3-2(a) Blocking probability for voice calls: scheme A, f=0.253-11
Figure 3-2(b) Dropping probability for voice calls: scheme A, f=0.253-11
Figure 3-3(a) Blocking probability for voice calls: scheme A, f=0.53-12
Figure 3-3(b) Dropping probability of type 1 for voice calls: scheme A, f=0.53-12
Figure 3-3(c) Dropping probability of type 2 for voice calls: scheme A, f=0.53-13
Figure 3-4(a) Blocking probability for voice calls: scheme A, f=0.753-13
Figure 3-4(b) Dropping probability of type 1 for voice calls: scheme A, f=0.753-14
Figure 3-4(c) Dropping probability of type 2 for voice calls: scheme A, f=0.753-14
Figure 3-5(a) Blocking probability for data calls: scheme A, f=0.253-15
Figure 3-5(b) Dropping probability for data calls: scheme A, f=0.253-15
Figure 3-6(a) Blocking probability for data calls: scheme A, f=0.753-16
Figure 3-6(b) Dropping probability for data calls: scheme A, f=0.753-16
Figure 3-7(a) Blocking probability for voice calls: scheme B3-17
Figure 3-7(b) Dropping probability of type 1 for voice calls: scheme B3-17
Figure 3-7(c) Dropping probability of type 2 for voice calls: scheme B3-18
Figure 3-8(a) Blocking probability for voice calls: scheme C3-18
Figure 3-8(b) Dropping probability of type 1 for voice calls: scheme C3-19
Figure 3-8(c) Dropping probability of type 2 for voice calls: scheme C3-19
Figure 4-1 MCR-DS-CDMA system4-13
Figure 4-2 Mapping of information bit rates to chip rate4-13
Figure 4-3 Power spectrum density for the three classes of information4-13
Figure 4-4 Flowchart of call admission control4-14
Figure 4-5(a) Total transmission bandwidth for λi=0.054-16
Figure 4-5(b) Total transmission bandwidth for λi=0.024-16
Figure 4-6(a) Video blocking probability4-17
Figure 4-6(b) Data blocking probability4-17
Figure 4-6(c) Voice blocking probability
Data Arrival Rate=1/60 Voice Arrival Rate=1/104-17
Figure 4-7(a) Video blocking probability4-18
Figure 4-7(b) Data blocking probability4-18
Figure 4-7(c) Voice blocking probability
Data Arrival Rate=1/60 Voice Arrival Rate=1/84-18
Figure 4-8(a) Video blocking probability4-19
Figure 4-8(b) Data blocking probability4-19
Figure 4-8(c) Voice blocking probability
Data Arrival Rate=1/50 Voice Arrival Rate=1/104-19
Figure 5-1 System Model5-24
Figure 5-2 CBR scheduler5-24
Figure 5-3 VBR scheduler5-25
Figure 5-4 ABR scheduler5-25
Figure 5-5 Shaper5-26
Figure 5-6(a) CBR blocking probability5-27
Figure 5-6(b) VBR blocking probability5-27
Figure 5-7(a) Packet delay5-27
Figure 5-7(b) Bandwidth utilization in the BS egress5-28
Figure 5-7(c) Packet delay5-28
Figure 5-7(d) Bandwidth utilization in the BS egress5-28
Figure 5-7(e) Packet delay5-29
Figure 5-7(f) Bandwidth utilization in the BS egress5-29
Figure 5-7(g) Packet delay5-29
Figure 5-7(h) Bandwidth utilization in the BS egress5-30
Figure 5-8(a) CBR packet mean delay5-30
Figure 5-8(b) VBR packet mean delay5-30
Figure 5-9(a) Bandwidth utilization in the BS egress VBR=0.2
expressed with lv=0.25-31
Figure 5-9(b) Bandwidth utilization in the BS egress VBR=0.3
expressed with lv=0.35-31
Figure 5-9(c) Bandwidth utilization in the BS egress VBR=0.4
expressed with lv=0.45-31
Figure 5-10(a) Various maximum tolerable delay: blocking probability5-32
Figure 5-10(b) Various maximum tolerable delay: mean delay5-32
Figure 5-10(c) Various maximum tolerable delay: bandwidth utilization5-32
Figure 5-11(a) CBR blocking probability: SNRth=7.6dB5-33
Figure 5-11(b) VBR blocking probability: SNRth=7.6dB5-33
Figure 5-12(a) CBR outage probability5-33
Figure 5-12(b) VBR outage probability5-34
Figure 5-13(a) Packet delay: FIFO5-34
Figure 5-13(b) Bandwidth utilization in the BS egress: FIFO5-34
List of Tables
Table 2-1 Simulation parameters2-17
Table 3-1 The dynamic borrowing parameters3-3
Table 4-1 Relative outer-cell interference factor4-14
Table 4-2 Inter-interference, εki4-14
Table 4-3 Simulation parameters4-15
Table 4-4. Capacity occupying probability for each MBC channel in the
MBCi pool, λo =1/10, λd =1/604-15
Table 4-5. Total capacity of each class user, λo =1/10, λd =1/604-16
Table 5-1 Simulation parameters5-26

                                

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