結論與未來發展 - 多介面裝置之遍佈式虛擬區域網路的設計與實作

本平台在微軟的作業系統 Windows XP (Service Pack 2)上開發成功，提供一個遍佈式的虛擬區域網路，成功的把 mSCTP 中，一個終端可以有多個 IP 的特性發揮出來，並應用在虛擬區域網路裡，再者本系統完全避開 Mobile IP 的缺點，包含部署代理人、沒有效率的路徑傳送、封包遺失以及防火牆 NAT 的穿透等缺點。另外對於單網路介面裝置來說，可以很順利的水平換手 (Horizontal Handoff)，並繼續保持原本的網路連線，而對於多種網路介面裝置來說可以達到垂直換手 (Vertical Handoff)且有著很小的換手延遲，

因此成功的整合了異質網路，提供 Session Continuity 的網路環境。

7.2 未來發展

憑借著本平台的特性以及優點，可預期的將來，會有許多有淺力的應用發展在本平台上，如網路語音電話 (Voice over IP)，媒體點播 (Media on Demand)，網路遊戲 (Internet Game)…等等，因此需要加強某些部份，如 socket 建立時認證機制的安全性，虛擬交換器 (virtual switch/hub)中封包交換的處理機制可以更有效率，以及虛擬網路卡上 IP 分配的問題。另外可以試著整合 SIP 的特性使得 MN 以及 CN 均可以同時漫遊於網路間，以及提供使用者可以方便設定自己對於網路的偏好，並依照使用者的偏好，在適當的時機點主動換手，提供最友善的網路環境。

參考文獻

[1] Z. Jiang, K.K. Leung, B.J. Kim and P. Henry, “Proxy Servers Based Seamless Mobility Management,” WCNC.2002, Orlando, FL, 2002.

[2] H. Sivakumar, S. Bailey and R.L. Grossman, “PSockets: The Case for Application-level Network Striping for Data Intensive Applications using High Speed Wide Area Networks,” Proceedings of the 2000 ACM/IEEE Conference on Spuercomputing, 2000.

[3] 林義欽, “行動無縫式TCP 連線環境架構之研究,” 國立交通大學資訊工程系, 碩士論文, August 2004.

[4] T. Goff and D.S. Phatak, “Unified Transport Layer Support for Data Striping and Host Mobility,” IEEE journal on selected areas in communications, Vol.

22, No. 4, May 2004.

[5] I. Aydin, W. Seok and C.C. Shen, “Cellular SCTP: A Transport-Layer Approach to Internet Mobility,” IEEE Computer Communications and Networks (ICCCN) 2003, October 2003.

[6] S. Kashihara, K. Iida, H. Koga, Y. Kadobayashi and S. Yamaguchi, “End-to-End Seamless Handover using Multi-path Transmission Algorithm,” Proc.

Internet Conference 2003, October 2003.

[7] D.A. Maltz and P. Bhagwat, “MSOCKS: An Architecture for Transport Layer Mobility,” IEEE INFOCOM, April 1998.

[8] L. Ma, F. Yu, V. Leung and T. Randhawa, “A New Method to Support UMTS/WLAN Vertical Handover Using SCTP,” IEEE Wireless Communications, Vol. 11, No. 4, pp.44-51, August 2004.

[9] R. Stewart, Q. Xie, K. Morneault, C. Sharp, H. Schwarzbauer, T. Taylor, I.

Rytina, M. Kalla, L. Zhang and V. Paxson, “Stream Control Transmission Protocol,” IETF RFC 2960, October 2000.

[10] C. Perkins, “IP Mobility Support,” IETF RFC 2002, October 1996

[11] H. Parikh, H. Chaskar, D. Trossen and G. Krishnamurthi, “Seamless Handoff of Mobile Terminal from WLAN to cdma2000 Network,” Proc. of IEEE 3G Wireless2003, San Francisco, May 2003.

[12] R. Chakravorty, P. Vidales, K. Subramanian, I. Pratt and J. Crowcroft,

“Performance Issues with Vertical Handovers – Experiences from GPRS Cellular and WLAN Hot-spots Integration,” Proceedings of the Second IEEE Annual Conference on Pervasive Computing and Communications (PERCOM’04), March 2004

[13] I.W. Wu, W.S. Chen, H.E. Liao and F.F. Young, “A Seamlcss Handoff Approach of Mobile IP Protocol for Mobile Wireless Data Networks,” IEEE Transactions on Consumer Electronics. Vol. 48, no. 2, pp. 335-344. May 2002 [14] 陳伯剛, “整合GPRS 與 Wireless LAN 資料網路之兩階層式架構與通訊協定,” 國

立交通大學資訊工程系, 碩士論文, August 2004.

[15] 邱文岳, “WLAN-GPRS 整合網路下無接縫換手的方法,” 國立交通大學資訊工程系, 碩士論文, August 2004.

[16] M. Handley, H. Schulzrinne, E. Schooler and J. Rosenberg, “SIP: Session Initiation Protocol,” IETF RFC 2543, March 1999.

[17] J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R.

Sparks, M. Handley and E. Schooler, “SIP: Session Initiation Protocol,” IETF RFC 3261, June 2002.

[18] J. Zhou and N. Sun, “A Seamless Handoff Scheme for Mobile IP,” Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd, 2006.

[19] M. Samad and N. S. M. Kasim, “Effect of Transmission Delay And Tunneled Traffic In A Wireless Mobile IP Network,” International RF and Microwave Conference (RFM) 2006, September 2006

[20] H.V. Nguyen, S.H. Roh, J.K. Ryu and S. Park, “A Modification for Fast Handover in Hierarchical Mobile IPv6,” The 9th International Conference Advanced Communication Technology (ICACT) 2007, Feb. 2007.

[21] D.W. Zhang and Y. Yaom, “A Predictive Handoff Approach for Mobile IP,”

International Conference on Wireless and Mobile Communications (ICWMC) 2006, 2006.

[22] 范榮軒, “異質網路漫遊系統整合平台之設計與實作,” 國立交通大學資訊工程系, 碩士論文, August 2005.

[23] H. Levkowetz and S. Vaarala, “Mobile IP Traversal of Network Address Translation (NAT) Devices,” IETF RFC 3519, April 2003.

[24] S.J. Koh, M.J. Chang, and M.J. Lee, Member IEEE, “mSCTP for Soft Handover in Transport Layer,” IEEE Communications Letters, vol. 8, no. 3, March 2004.

[25] J. Stone, R. Stewart and D. Otis, “Stream Control Transmission Protocol Checksum Change,” IETF RFC 3309, Sept. 2002

[26] R. Stewart et al, “Stream Control Transmission Protocol Partial Reliability Extensions,” IETF RFC 3758, May 2004

[27] R. Stewart et al, “Stream Control Transmission Protocol Dynamic Address Reconfiguration,” IETF Internet Draft

[28] W.C. Wang, C.H. Hsu, Y.M. Chen and T.Y. Chung, “SCTP-based Handover for VoIP over IEEE802.11 WLAN Using Device Virtualization,” The 9th International Conference Advanced Communication Technology (ICACT) 2007, Feb. 2007.

[29] “Softether,” http://www.softether.com [30] “WinPcap,” http://www.winpcap.org

[31] K. Sethom, H. Afifi and G. Pujolle, “VIP: Virtual Interface Prototype for Mobile Communication,” IEEE 16th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) 2005, September 2005.

[32] “Wireshark”, http://www.wireshark.org [33] “Ethereal”, http://www.ethereal.com

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