WCDMA 網路優化設計

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簡伯成(Po-Cheng Chien) 查詢紙本館藏

畢業系所

通訊工程學系在職專班

論文名稱

WCDMA 網路優化設計
(WCDMA Network Design and Optimization)

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摘要(中)

無線網路佈建的完整性，除了建置基地台來增加涵蓋率服務更多的使用者外。基地台建設的前置規劃及啟用後軟硬體的設定也深深影響到訊號的品質。本論文的內容主要針對Wideband Code Division Multiple Access(WCDMA) 第三代行動電話網路設計的優質化，並研究在高速移動下以調整基地台的設定來提升訊號的穩定度，維持良好的通話品質。
本論文內容主要分為五個章節: 第一章為概述及研究動機; 第二章則介紹WCDMA網路的基本架構及資源控管; 第三章為介紹WCDMA站台的硬體，頻道配置及細胞選擇。第四章主要介紹基地台的優化方法及研究高速移動時考慮都卜勒效應(Doppler Effect)來調整基地台以達到優化目的。第五章則為結論。
網路會因時因地而變的，所以網路優化的工作是無止盡的必需時時投入心力。也是工程人員努力的目標。

摘要(英)

In radio network, besides build new sites to improve cell coverage to offer more service, the site design and pre-tuning of Radio Base Station (RBS) will effected network’s performance deeply. In this book, we focus on Wideband Code Division Multiple Access (WCDMA) network’s optimization, and research better solution to decrease drop call rate on high speed objects to keep stable signal level and quality.
There are 5 chapters in this book. The chapter 1 is introduction research objective. The chapter 2 described the network structure of WCDMA, and mention about radio resource control. The chapter 3 introduced WCDMA network’s hardware, channel mapping, cell selection and reselection. The chapter 4 is focus on radio access network (RAN) tuning. And mention about in high speed object how we adjusted site’s hardware and parameter to avoid frequency shift (Doppler Effect).

關鍵字(中)

★ 網路優化
★ 細胞選擇

關鍵字(英)

★ Network optimization
★ cell reselection

論文目次

摘要
Abstracts
誌謝
List of Figures
Chapter 1 introduction………………………………………………………………………………………01
1-1. Motivation and Objective………………………………………………………………………01
1-2. Structure of the thesis………………………………………………………………………....02
Chapter 2 Background of WCDMA…………………………………………………………………......03
2-1. WCDMA Fundamentals……………………………………………………………………......03
2-1-1. WCDMA Radio Network……………………………………………………………....03
2-1-2. WCDMA Core Network Architecture…………………………………………......05
2-1-3. WCDMA RAN interface…………………………………………………………….....07
2-2. Radio Resource Management…………………………………………………………….....09
2-2-1. Admission Control……………………………………………………………………...10
2-2-2. Load Control……………………………………………………………………………...11
2-2-3. Packet Scheduler………………………………………………………………………..13
2-2-4. Resource Manager.........................................................................15
2-2-5. Power Control…………………………………………………………………………....16
2-2-6. Handover Control……………………………………………………………………....18
Chapter 3 WCDMA Physical layer and Procedures………………………………………………...21
3-1. Propagation Models……………………………………………………………………………..21
3-2. WCDMA Hardware………………………………………………………….......................22
3-2-1. WCDMA Transmitter…..…………………………………………......................22
3-2-2. Voice Coding………………..…………………………………………...................25
3-2-3. Adaptive Multi-Rate……..………………………………………….....................26
3-2-4. Error Detection and Correction CRC and FEC Coding….....................28
3-3-5. CRC…………………………………………………………………………..................29
3-3-6. FEC……………………………………………………………………………................29
3-3. WCDMA Channels...................................................................................30
3-3-1. Logical Channels…………………………………………………………................31
3-3-2. Traffic Channels………….………………………………………………................32
3-3-3. Physical Channels…………………………………………………………..............34
3-4. RAN procedures……….……………………………………………………………………....39
3-4-1. Cell Selection and Reselection…………………………………………............39
3-4-2. PLMN Selection……………………………………………………………..............41
3-4-3. Cell Reservations and Cell Restrictions……………………………..............43
3-4-4. Cell Status and Special Reservations………………………………….............43
3-4-5. Access Control…………………………………………………………………...........45
3-4-6. Emergency Call…………………………………………………………………….......46
Chapter 4 Network Optimization............................................................................47
4-1. introduction…………………………………………………………………………………….....47
4-2. Preparation……………………………………………………………………………………......49
4-2-1. Site Configuration Data…………………………………………………………......50
4-2-2. RAN Tuning Time Schedule…………………………………………………….......51
4-2-3. Using Tool to Design initial Antenna tile and create initial Neighbor list………………………………....…………………………………………………………51
4-3. Coverage Optimization Objectives and Policy…………………………………………..61
4-3-1. Objective of Coverage Optimization………………………………………………61
4-3-2. Policy of Coverage Optimization……………………………………………………61
4-3-3. Objective of Neighbor list Optimization…………………………………………62
4-3-4. Policy of Neighbor list Optimization……………………………………………...63
4-4. Process Overview…………………………………………………………………………………64
4-5. RAN Drive Test Route Plan…………………………………………………………………….66
4-5-1. Test Route for Non-Cluster Measurement……………………………………...66
4-5-2. Test Route for Cluster Measurement……………………………………………..69
4-6. Primary Scrambling Code Plan……………………………………………………………….70
4-7. N-Cell relation review…………………………………………………………………………...72
4-8. RAN Parameter Consistency check………………………………………………………...72
4-9. High Speed Railway and High way sites plan Analysis.................................73
4-9-1. Maximun Distance.........................................................................73
4-9-2. Path Loss......................................................................................74
4-9-3. Minimum Distance.........................................................................75
4-9-4. Handover......................................................................................76
4-9-5. Antenna Height.............................................................................77
4-9-6. Examples and real network test......................................................78
Chapter 5 Conclusions..........................................................................................94
Reference............................................................................................................95

參考文獻

[1] Harri Holma and Antti Toskala “ WCDMA FOR UMTS” Radio Access for Third Generation Mobile Communications. Second Edition. 2002.
PP.86-95
[2] Ericsson student text “WCDMA RAN PROTOCOLS AND PROCEDURES”. 2003. PP.6-12.
[3] Ericsson student text “TEMS Investigation 7.0”. 2006.PP. 20-25
[4] Ericsson student text “WCDMA AIR INTERFACE”. 2004.PP.3-15.
[5] Asha Mehrotra. “Cellular Radio Performance Engineering”1999. PP.251-254.
[6] Holma, H., Toskala, A. and Latva-aho, M., ‘Asynchronous Wideband CDMA for IMT-2000’, SK Telecom Journal, South Korea, Vol. 8, No. 6, 1998, pp. 1007–1021.
[7] Holma, H., Melero, J., Vainio, J., Halonen, T. and Ma‥kinen, J. ‘‘Performance of Adaptive Multirate (AMR) Voice in GSM and WCDMA’’, Proc of IEEE Vehicular Technology Conference (VTC 2003-Spring), pp. 2177–2181, April 2003.
[8] 3GPP, Technical Specification Group Services and System Aspects, Codec for Circuit SwitchedMultimedia Telephony Service: General Description (3G TS 26.110 version 3.0.1), 1999.
[9] Johnson, C., Joshi, H. and Khalab, J. ‘‘WCDMA Radio Network Planning for Location Servicesand System Capacity’’, IEE 3G2002 conference in London, 9th May.
[10] Universal Mobile Telecommunications System (UMTS), Selection Procedures for the Choice of Radio Transmission Technologies of the UMTS, ETSI Technical Report, UMTS 30.03 version 3.1.0, November 1997.
[11] Laiho, J.,Wacker, A. and Novosad, T., Radio Network Planning and Optimisation for UMTS, John Wiley & Sons, 2001.
[12] Saunders, S., Antennas and Propagation forWireless Communication Systems, JohnWiley&Sons,1999.
[13] Wacker, A., Laiho-Steffens, J., Sipila‥, K. and Heiska, K., ‘The Impact of the Base Station Sectorisation on WCDMA Radio Network Performance’, Proceedings of VTC’99, Amsterdam,The Netherlands, September 1999, pp. 2611–2615.
[14] Holma, H. and Laakso, J., ‘Uplink Admission Control and Soft Capacity with MUD in CDMA’,Proceedings of VTC’99 Fall, Amsterdam, Netherlands, 19–22 September 1999, pp. 431–435.
[15] Parkvall, S., Dahlman, E., Frenger, P., Beming, P. and Persson, M. ‘The High Speed PacketData Evolution of WCDMA,’ Proceedings of the 12th IEEE Symposium of Personal, Indoor,and Mobile Radio Communications (PIMRC), San Diego, California, USA, September 2001, vol. 2,pp. G27–G31.

指導教授

蔡木金(Mu-King Tsai)

審核日期

2008-7-8

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