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博碩士論文 etd-0828106-173944 詳細資訊
Title page for etd-0828106-173944
論文名稱
Title
利用任意播放協定之觀念改善會談導向的行動服務品質
Using Anycast Concept to Improve QoS of Session-Oriented Mobile Services
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
56
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2006-07-26
繳交日期
Date of Submission
2006-08-28
關鍵字
Keywords
接續程序、服務品質、服務轉移、任意播放
QoS, anycast, handover, service migration
統計
Statistics
本論文已被瀏覽 5642 次,被下載 30
The thesis/dissertation has been browsed 5642 times, has been downloaded 30 times.
中文摘要
近年來,為因應現今的輕巧裝置和使用者習慣的改變,電腦網路的移動性越來越受到重視。目前有許許多多的研究是針對縮短接續程序所造成的延遲。這些研究當中,絕大多數致力於維持當行動節點跨越不同網域時與對應結點間的連線。這樣的策略在某一些應用上是不恰當的,例如同質性分散式系統。
在這篇論文中,提出一個包含任意播放和服務轉移的全新接續方法。在我們所提出的方法中,當一個行動節點進入新的網域時,我們利用任意播放協定來定位出一個新的最近伺服器,並且將正在接受的服務自動從較遠的伺服器轉移到距離使用者較近的新伺服器來。結果顯示,服務轉移可以提升服務品質以及改善頻寬使用,不論是對服務本身,或是整體網路環境,都能因此獲得好處。
Abstract
In response to the presence of portable devices and the change in usage patterns, mobility support for computer networking has received increasing attentions in recent years. There has been wide variety of established works focusing on the shortening of the handover delay. Most of them had tried their best in maintaining the connections to their peer nodes as mobile nodes moving across different network domains. This might not be a best policy in certain applications, such as homogeneous content distribution systems.
A new handover scheme incorporating anycasting and service migration is developed and presented in this thesis. In the proposed approach, anycast is used to locate a new nearest server as a mobile node entering a new domain, and an ongoing service will be dynamically migrated from a distant server to a new server with shorter weighted network distance to the client. As a result, the individual service connection, as well as the global network environment, will benefit from the service migration, in terms of improved service quality and bandwidth utilization.
目次 Table of Contents
第一章 簡介 5
第二章 相關研究 7
2.1 名詞介紹 7
2.2 接續管理 (HANDOVER MANAGEMENT) 8
2.2.1 第二層觸發機制 9
2.2.2 快速接續協定 10
2.3 行程轉移 (PROCESS MIGRATION ) 12
2.4 ANYCAST 19
2.4.1 Anycast、Multicast與Unicast之比較 19
第三章 連線轉移之快速接續程序 24
3.1 方法簡介 24
3.2 核心機制 27
3.2.1 快速接續程序 27
3.2.2 轉移決策 (Migration Policy) 30
3.2.3 轉移機制 31
第四章 分析與模擬 36
4.1 使用新舊伺服器之效能比較 36
4.1.1 伺服器到使用者間距離對RTT之影響 36
4.1.2 伺服器到使用者間距離對傳輸速度的影響 41
4.2 實作連線轉移機制 44
4.3 降低網路負載之分析 47
第五章 結論 48
參考文獻 50
參考文獻 References
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IPv6 Networks,” IEEE Communications Magazine, Volume 40, Issue 8, Aug. 2002 Page(s): 38 – 43.
【2】 E. Casalicchio, V. Cardellini and S. Tucci, “A Layer-2 Trigger to Improve
QoS in Content and Session-Oriented Mobile Services,” Proc. of 8th ACM/IEEE International Symposium on Modeling, Analysis and Simulation of Wireless and Mobile Systems (WSWIM 2005), Oct. 2005.
【3】 R. Koodli, Ed., RFC 4068, “Fast Handovers for Mobile IPv6,” July 2005.
【4】 V. Olaru and W.F. Tichy, “On the Design and Performance of Kernel-Level
TCP Connection Endpoint Migration in Cluster-Based Servers,” IEEE
International Symposium Volume 2, May 2005, Page(s): 1000 – 1007.
【5】 A. C. Snoeren and H. Balakrishnan, “An End-to-End Approach to Host
Mobility,” Proc. MOBICOM, Boston, MA, 2000, Page(s): 155–166.
【6】Behrouz A. Forouzan, ”TCP/IP Protocol Suite,” Chapter 12, Page(s): 329–333.
【7】Ming Li, Hua Zhu, S. Sathyamurthy, I. Chlamtac and B. Prabhakaran,
“End-to-end framework for QoS guarantee in heterogeneous wired-cum-wireless networks,”Quality of Service in Heterogeneous Wired/Wireless Networks, 2004. QSHINE 2004. First International Conference on 2004, Page(s):140 – 147.
【8】R. Shacham, H. Schulzrinne, S. Thakolsri and W. Kellerer, “The virtual device:
expanding wireless communication services through service discovery and session mobility,” Wireless And Mobile Computing, Networking And Communications, 2005. (WiMob'2005), IEEE International Conference on Volume 4, Aug. 22-24, 2005, Page(s):73 - 81
【9】K. Ohta, T. Yoshikawa, T. Nakagawa, Y. Isoda and S. Kurakake, “Adaptive terminal middleware for session mobility,” Distributed Computing Systems Workshops, 2003. Proceedings. 23rd International Conference, 19-22 May 2003, Page(s):394 – 399.
【10】S. Weber and Cheng Liang, “A Survey of Anycast in IPv6 Networks,” IEEE Communications Magazine Volume 42, Issue 1, Jan. 2004, Page(s):127 – 132.
【11】C. Partridge, T. Mendez and W. Milliken, RFC 1546, “Host Anycasting Service,” Nov. 1993.
【12】S. Matsunaga, S. Ata, H. Kitamura and M. Murata, “Design and Implementation of IPv6 Anycast Routing Protocol: PIA-SM,” Advanced Information Networking and Applications, 2005. AINA 2005. 19th International Conference Volume 2, 28-30, March 2005, Page(s): 839 – 844.
【13】 Zhang Li, Weijia Jia, Yan Wei and Li Xiao-Ming, “An Efficient Anycast Routing Protocol Based on Multi-Metrics,” Parallel Architectures, Algorithms and Networks, 2004. Proceedings. 7th International Symposium on 10-12, May 2004, Page(s): 24 – 29.
【14】Zegura E.W, Ammar M.H., Zongming Fei, Bhattacharjee S,” Application-layer anycasting: a server selection architecture and use in a replicated Web service,” Networking, IEEE/ACM Transactions, Volume 8, Issue 4, Aug. 2000 Page(s):455 – 466
【15】 Marina del Rey, RFC 793, ” Transmission Control Protocol,” September 1981.
【16】S. Floyd, “TCP and Successive Fast Retransmits,” Technical report, October
1994.
【17】 W. Stevens, “TCP Slow Start, Congestion Avoidance, Fast Retransmit, and
Fast Recovery Algorithms,” RFC 2001, January 1997.
【18】 Shaojian Fu, Atiquzzaman M., “Handover latency comparison of SIGMA, FMIPv6, HMIPv6, FHMIPv6,” Global Telecommunications Conference, 2005. 28 Nov.-2 Dec. 2005 Volume: 6, Page(s): 3809-3813
【19】Dimopoulou L., Leoleis G., Venieris I.O.,” Fast handover support in a WLAN environment: challenges and perspectives,” Network, IEEE Volume 19, Issue 3, May-June 2005 Page(s):14 - 20
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