臺灣博碩士論文加值系統

SCTP是由IETF發展出來的一個新傳輸層協定，並定義在RFC2960內，最初被設計在IP網路上來傳送PSTN信號訊息，SCTP與TCP類似，均為連接導向的傳輸協定，具有可靠性資料傳送，但因TCP發現有諸多限制，及SCTP有許多特點，如多宿(multi-homing)、多串流(multi-streaming)、4-way handshake、cookie安全機制等，能改善傳輸品質及效能，並可避免被盲目攻擊。
在這篇論文，首先我們對SCTP的Association基本運作及cookie、multi-homing、multi-streaming等特性來作探討，接著利用實作對SCTP封包觀察，最後利用SCTP的multi-homing特性，使用NS2來作UMTS/WLAN整合系統的無接縫交遞模擬，並提出運用在UMTS話務壅塞之改善。

The stream control transmission protocol (SCTP) is a new transport layer protocol developed by the Internet Engineer Task Force (IETF) in RFC2960 (Request for Comments). SCTP was originally designed to transport PSTN signaling messages over IP networks. SCTP is similar to TCP. SCTP offers a point-to-point, connection-oriented, reliable delivery transport service for applications communicating over an IP network. But because TCP found some restrictions, and SCTP has a lot of characteristics, such as multi-homing , multi-streaming , 4- way handshake and cookie safe mechanism, etc. To improve and transmit the throughput and efficiency, and can prevent from and is attacked blindly.
In this paper, we describe basic operation on the Association of SCTP and discuss the features of SCTP : cookie ,multi-homing , multi-streaming , etc. Then to make SCTP package to observe in fact. Finally, utilization multi-homing characteristic of SCTP , The seamless handover simulation in ns2 for UMTS and WLAN integration, and then propose IS handover scheme to improve UMTS congestion traffic.

中文摘要..................................................................................................I
ABSTRACT..............................................................................................II
致謝........................................................................................................III
目錄........................................................................................................IV
表目錄.....................................................................................................V
圖目錄....................................................................................................VI
第一章 緒論.............................................................................................1
1.1 研究背景...............................................................................1
1.2 研究動機...............................................................................1
1.3 論文架構...............................................................................2
第二章 SCTP運作探討..........................................................................4
2.1 SCTP介紹...........................................................................4
2.2 SCTP封包訊息格式............................................................5
2.3 SCTP 信號流程.................................................................20
2.4 SCTP 特性.........................................................................24
2.5 SCTP協定與TCP協定比較.............................................26
第三章 封包實測...................................................................................30
3.1實測環境.............................................................................30
3.2 connection set-up (4-way handshaking)封包量測與觀察...32
3.3 payload data,multi-streaming及SACK封包量測與觀察..39
3.4 multi-homing,heartbeat封包量測與觀察...........................48
第四章 SCTP multi-homing系統整合之運用與NS2模擬...................52
4.1 NS2簡介...............................................................................52
4.2 UMTS與WLAN系統整合..................................................52
4.3 SCTP multi-homing 之UMTS與WLAN系統整合...........57
4.4 模擬系統架構......................................................................60
4.5 模擬結果.............................................................................61
4.6 討論....................................................................................63
第五章 結論與未來工作.......................................................................64
5.1 結論.....................................................................................64
5.2 未來工作.............................................................................65
參考文獻................................................................................................66

[1] 程懷遠，最新數位通訊大全-2G/3G/WLAN原理與實務，全華科技，2005年
[2] 林傑斌，秦美惠，羅傑克，WLAN行動通訊網路，文魁資訊，2003年
[3] 邱武志，吳全源，無線區域網路與行動通信系統整合技術，出國報告
，中華電信，2004
[4] R. Stewart, Q. Xie, K. Morneault, C. Sharp, H. Schwarzbauer,T. Taylor, I. Rytina, M. Kalla, L. Zhang, V. Paxson, “Stream Control Transmission Protocol”, RFC2960, October 2000
[5] L. Ong， J. Yoakum,”An Introduction to the Stream Control Transmission Protocol (SCTP)”，RFC 3286，May 2002 [6] J. Postel, “Transmission Control Protocol”, IETF RFC 793,
January 1980.
[7] 邵雯娟、金仙力、馬嚴，「SCTP資料傳輸過程的技術研究」，中國資料通信，2003年2月20日。
[8] Stewart,R and Amer,P.D.,“Why is SCTP needed given TCP and UDP are widely available ?”,Internet Society, June, 2004.
[9] 蔡尚志，以SCTP協定於封包交換網路傳輸信號之討論與分析,頁12-18，電腦與通訊第九十七期，2001年。
[10] 中華電信研究所，行動網路ALL IP 應用技術研究報告，民國92年12月
[11] Li Ma; Fei Yu; Leung, V.C.M.; Randhawa, T.; “A new method to support UMTS-WLAN vertical handover using SCTP” Wireless Communications, IEEE, Volume 11, Issue 4, Aug. 2004 Page(s):44 - 51
[12] R. Stewart and C. Metz, “SCTP：New Transport Protocol for TCP/IP”, IEEE Journal of Internet Computing Volume: 5, Issue: 6, pp. 64-69, Nov.-Dec. 2001.
[13] Salkintzis, A.K.; Fors, C.; Pazhyannur, R.;”WLAN-GPRS integration for next-generation mobile data networks” Wireless Communications, IEEE, Volume 9, Issue 5, Oct. 2002 Page(s):112 - 124
[14] Network Simulator學習網站，http://netlab.cse.yzu.edu.tw/ns2/ns2_website/
[15] 柯志亨等，「計算機網路實驗—以NS2 模擬工具實作」，學貫出版社，2005年。
[16] Network Simulator(NS-2)，http://www.isi.edu/nsnam/ns。