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研究生:朱育民
研究生(外文):Yu-Min Chu
論文名稱:在無線網路上無縫式SIP傳輸與頻寬確保機制
論文名稱(外文):Seamless SIP with QoS Support in Wireless Networks
指導教授:林振緯
指導教授(外文):Jenn-Wei Lin
學位類別:碩士
校院名稱:輔仁大學
系所名稱:資訊工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:43
中文關鍵詞:網路電話無線系統換手機制會議起始協定服務品質保證資源保留協定
外文關鍵詞:VoIPwireless systemhandoffSIPQoSRSVP
相關次數:
  • 被引用被引用:0
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  • 下載下載:12
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在無線網路環境之下,網路電話 (VoIP) 的運用將會更加的重要與普及。因此在無線網路環境中當使用者在使用網路電話,且移動在不同網路當中時,如何能完成整個換手機制而通話不發生中斷、語音空白,為移動式網路電話中相當重要的議題,在移動節點移動至新的網路當中開始執行換手機制時會存在兩個問題:(1) 在換手階段,移動節點需要重新 Re-invite 接收端,但是往往造成移動節點所發出 Re-invite 訊息的延遲時間過長,(2) 當移動節點完成 Re-invite 等換手程序後,新的多媒體語音路徑並不能保證能承擔當下此語音通話的頻寬,造成通話語音斷斷續續。在此篇論文中,採用SIP為本篇論文的主要架構,在移動式SIP架構中,所提之方法為在換手時使用舊的Foreign Agent 轉傳和續接原來舊的路徑,接著, 使用RSVP 來保證新路徑頻寬,完成兩階段的換手和頻寬確保機制。在評估分析與模擬結果中證明所提出的方法在移動式SIP換手時有顯著
的減短 Re-invite 的延遲時間和封包遺失率。
The application of Voice over IP (VoIP) has been extensively provided in wireless systems. For a wireless VoIP user, it is important how to ensure that its session is not interrupted and does not generate blank sounds when it hands off to a new network. However, there are two problems in the handoff the wireless VoIP user. The first problem is that there is a possibly long delay for re-inviting to the originally correspondent node. The second problem is that the audio bandwidth cannot be guaranteed in the new multimedia route path. In this thesis, we proposed a new handoff approach for wireless VoIP user based on Session initiation Protocol (SIP) protocol. In the proposed approach, the old multimedia route path is continuously used to avoid packet losses due to the possibly long re-inviting delay. In addition, Resource Reservation Protocol (RSVP) is used to make sure that there is enough bandwidth on the new multimedia route path to achieve the quality of service (QoS) support. Finally, we perform the evaluation and simulation to demonstrate the
effectiveness of the proposed approach.
第一章 緒論 1
第二章 文獻探討 4
2.1 H.323 4
2.1.1 H.323架構與元件介紹 4
2.2 SIP 8
2.2.1 SIP架構與元件介紹 8
2.2.2 SIP命名方式 10
2.2.3 SIP Message 11
2.2.4 SIP 運作模式 14
2.2.3 SIP Message 11
2.3 SDP 17
2.4 SIP Mobility 18
2.5 RSVP 21
第三章 所提方法 26
3.1 基本想法 26
3.1.1 如何有效減低Re-Invite的延遲時間 27
3.1.2 新路徑無法提供足夠頻寬承擔多媒體語音通話傳輸 27
3.2 問題解決 28
3.2.1 路徑選擇與續接 28
3.2.2 新路徑頻寬的調整 30
第四章 比較分析 34
第五章 評估與模擬 36
5.1 評估 36
5.2 模擬 37
第六章 總結 40
參考文獻 41
[1] R. Braden, L. Zhang, S. Berson, S. Herzog, and S. Jamin,“Resource ReSerVation Protocol (RSVP) - Version 1 Functional Specification”, IETF
RFC 2205, September 1997.
[2]B. Moon and H. Aghvami “RSVP extensions for real-time services in wireless mobile networks”, Communications Magazine IEEE, pp.52-59,
December 2001.
[3]B. Goode, “Voice over Internet Protocol (VoIP)” Proceeding of the IEEE, VOL.
90, NO.9, September 2002.
[4] B. Moon and A.H. Aghvami, “Quality-of-Service Mechanisms in All-IP Wireless Access Networks”, Selected Areas in Communications, IEEE Journal
on, June 2004.
[5] C. Perkins, "IP Mobility Support," IETF RFC 2002, October1996.
[6]D. Collins “Carrier Grade Voice Over IP”, Second Edition, International
Editions 2003, ISBN 0-07-123115-2.
[7]E. Wedlund and H. Schulzrinne, “ Mobility Support using SIP”, In second ACM/IEEE International Conference on Wireless and Mobile Multimedia,
August 1999.
[8] E. Wedlund and H. Schulzrinne., “Application-Layer Mobility Using SIP”, Dept. of Computer Science, Columbia University, Netinsight, July 2000.
[9] H, Fathi, R, Prasad, and S, Chakraborty, “Mobility management for VoIP in 3G systems: evaluation of low-latency handoff schemes”, Wireless
Communications, IEEE, pp. 96-104, April 2005.
[10]S. Mohanty, and I. F. Akyildiz,“Performance Analysis of Handoff Techniques based on Mobile IP, TCP-Migrate, and SIP” ,IEEE Transactions on Mobile
Computing, July 2007.
[11] J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley and E. Schooler,“SIP: Session Initiation Protocol ”, IETF
RFC3261, June 2002.
[12] J. Rosenberg and H. Schulzrinne,“An Offer/Answer Model with the Session
Description Protocol (SDP) ”, IETF RFC 3264, June 2002.
[13] J. W. Jung, R. Mudumbai, D. Montgomery, and H. K. Kahng“Performance Evaluation of Two Layered Mobility Management using Mobile IP and Session
Initiation Protocol”, IEEE GLOBECOM 2003.
[14] M. Handley and V. Jacobson, “SDP: Session Description Protocol”, IETF
RFC2327, April 1998.
[15] M. G.. Martin, ”Input 3rd-Generation Partnership Project (3GPP) Release 5 Requirements on the Session Initiation Protocol (SIP) ” IETF RFC4083, May
2005.
[16]N. Banerjee, A. Acharya, and S. K. Das,“Seamless SIP-Based Mobility for
Multimedia Applications”, Network IEEE, March-April 2006.
[17] NS-2 Network Simulator , Available:http://www.isi.edu/nsnam
[18]S. Shenker and L. Breslau , “Two Issues in Reservation Establishment”,
Proceedings of ACM SIGCOMM , 1995.
[19]T. Turletti and C. Huitema, “Videoconferencing on the Internet,” IEEE/ACM
Transactions on Networking (TON), pp 340 - 351, June 1996.
[20] T. T. Kwon, S. Das, M. Gerla, and S. Das,“Mobility management for VoIP service: Mobile IP vs SIP”, Wireless Communications, pp.66- 75, October
2002.
[21]The SIP website http://www.cs.columbia.edu/sip
[22] The 3GPP website http://www.3gpp.org/
[23] The 3GPP2 website http://www.3gpp2.org/
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