臺灣博碩士論文加值系統

在西元1969年美俄冷戰時期，美國國防部為了軍事用途而發展ARPANET之後，資訊文明即開始走入網路的時代，由於網路帶給人們資訊交換的便利性，再加上多媒體的蓬勃發展，因此人們越來越要求網路的傳輸速度；為了因應人們對速度的要求，網路的傳輸媒介不斷地推陳出新。目前人們在學校、公司使用固接網路T1、T3、光纖，而在家裡則使用Modem、ADSL、Cable連上網路，由於這些傳輸媒介都是實體線材，因此佈建不易，且佈建時間較長、成本較高。為了改善以上缺點，網路的線材慢慢從有線進步到無線的媒介。自1998年開始，IEEE 802.16工作團隊（IEEE 802.16 Working Group）開始為寬頻無線存取提出Wireless Metropolitan Area Network（WirelessMANTM）的技術標準，這是一個現今全球矚目的長距離無線網路的技術，此技術將可縮短佈建寬頻網路的時間，並可節省成本。802.16網路由一個基地台與一些距離最遠可長達30英哩的許多用戶台所建構而成，兩者進行點對多點的無線傳輸，用戶台之下再連接數個傳統的區域網路。由於IEEE 802.16在網路分層架構中位於第二層之下；因此，以基地台為中心，半徑長達30英哩的IEEE 802.16網路是一個很大的子網路。這在管理上相當不易，且在該此子網路之下，資料的傳輸將易造成大規模的ARP廣播風暴；更甚者，若在802.16網路中增加具有行動行為的行動主機時，行動主機的移動將使廣播風暴愈趨嚴重。因此，為消除廣播風暴與增加管理上的方便，需將IEEE 802.16網路的著眼點提升至第三層，意即在基地台、用戶台上加上第三層的功能。不過，目前著名的第三層行動管理機制並不適合此IEEE 802.16網路，因此我們將把IEEE 802.16網路視為中型領域，並為它量身訂作一種中距離行動管理機制。此機制將可與現行的大範圍行動管理機制與小型行動管理機制互相協同運作並彼此相容。本篇論文將由定性與定量兩方面來評估此IEEE 802.16視為中型領域的必要性，這些評估亦顯示中距離移動管理機制適合用在IEEE 802.16的網路環境。

In this paper, we investigate the characteristics of IEEE 802.16 and conclude that it is better to equip BS and SS with Layer 3 functionality such that an 802.16 network acts as the backbone network of different subnets to enhance 802.16-based network deployment. Moreover, in order to support mobility in an 802.16 network environment, a novel concept called middle-domain mobility management for 802.16 is proposed in the paper. The 802.16 middle-domain is neither macro- nor micro-domain, but something in between them. By introducing the middle-domain in 802.16, an efficient mobility management scheme that can accommodate different micro-mobility protocols in an 802.16 network environment can be provided. Mobility management and handoff schemes as well as the associated cache structure for 802.16 middle-domain are presented in the paper.

一、 導論………………………………………………………1
1. 寬頻王朝的興起 …...…………………………………….…1
2. 明日之星─802.16…………………………………………...3
3. 困窘………………………………………………………5
二、 相關研究介紹與問題探討………………………………8
1. 相關研究簡介……………………………………………….8
2. 問題探討………………………………………………….13
三、 中領域行動管理機制..………………………………... 18
1. 中領域的概念……………………………………………...18
2. 三階層架構下的移動………………………………………..20
3. 中領域行動管理機制………………………………………..21
4. 資料傳送的方法……………………………………………25
四、 效能評估………………………………………………. 28
1. 模擬實驗………………………………………………….28
2. 定性分析………………………………………………….32
五、 未來工作………………………………………………..35
六、 結論……………………………………………………..37
參考文獻……………………………………………………...38

[1]資策會FIND, http://www.find.org.tw/
[2]W. Stallings, “IEEE 802.11: moving closer to practical wireless LANs,” IT Professional, vol. 3, issue 3, pp. 17-23, May-Jun. 2001.
[3]J. W. Neorenberg II, “Bridging wireless protocols,” IEEE Communication Magazine, vol. 39, issue 11, pp. 90-97, Nov. 2001.
[4]IEEE 802.16 Task Group e (Mobile WirelessMAN), http://wirelessman.org/tge/index.html
[5]T. Cooklev, “Wireless Communication Standards: a study of IEEE 802.11TM, 802.15 TM, and 802.16 TM,” IEEEE, ISBN: 0-7381-4066-X.
[6]C. Eklund, R. B. Marks, K. L. Stanwood, and S. Wang, “IEEE Standard 802.16: A Technical Overview of the WirelessMAN Air Interface for Broadband Wireless Access,” IEEE Communication Magazine, vol. 40, no. 6 , pp. 98-107, June 2002.
[7]“Business Case Models for Fixed Broadband Wireless Access based on WiMAX Technology and the 802.16 Standard,” WiMax Forum, 10 Oct. 2004.
[8]IEEE 802.16-2004, “IEEE Standard for Local and Metropolitan Area Networks-Part 16: Air Interface for Fixed Broadband Wireless Access Systems,” 1 Oct. 2004.
[9]S. J. Vaughan-Nichols, “Achieving Wireless BroadBand with WiMax,” Computer, pp. 10-13, Jun. 2004.
[10]WiMax (Worldwide interoperability for Microwave Access), http://www.wimax.com
[11]W. Stallings, “Data and Computer Communications,” Prentice-Hall, seventh edition, ISBN: 0-13-086388-2.
[12]D. E. Comer, “Internetworking with TCP/IP Principles, Protocols, and Architectures,” Prentice-Hall, fourth edition, ISBN: 0-13-019354-4.
[13]IEEE 802.11f/D5, “Draft Recommended Practice for Multi-Ventor Access Point Interoperability via an Inter-Access Point Protocol Across Distribution Systems Supportint IEEE 802.11 Operation.”Jan. 2003.
[14]C. Perkins, “Mobile IP,” IEEE Communication Magazine, vol. 35, issue 5, pp. 84-99, May 1997.
[15]C. Perkins, “Mobile Networking Through Mobile IP,”IEEE Internet Computing, vol. 2, issue 1, pp. 58-69 ,Jan.-Feb. 1998.
[16]C. Perkins, Ed., “IP Mobility Support for IPv4,” IETF RFC 3344, August 2002.
[17]A. T. Campbell and J. Gomez, “An Overview of Cellular IP,” Proc. IEEE Wireless Communications and Networking Conference (WCNC), vol. 2, pp. 606-610, 1999.
[18]A. T. Campbell, J. Gomez, S. Kim, A. G. Valkó, C. Y. Wan, and Z. R. Turanyi, “Design, Implementation, and Evaluation of Cellular IP,” IEEE Personal Communications, vol. 7, issue 4, pp. 42-49, Aug. 2000.
[19]A. G. Valkó, “Cellular IP: a new approach to Internet Host Mobility, ” ACM SIGCOMM Computer Communication Review, vol. 29, issue 1, pp. 50-65, Jan. 1999.
[20]The Cellular IP Project at Columbia University, http://comet.columbia.edu/cellularip
[21]E. Gustafsson, A. Jonsson, and C. Perkins, “Mobile IPv4 Regional Registration,” Internet draft, draft-ietf-mip4-reg-tunnel-00.txt, 2004.
[22]M. Carli, A. Neri, and A. R. Picci, “Mobile IP and Cellular IP Integration for Inter Access Networks Handoff,” Proc. IEEE International Conference on Communications (ICC), vol. 8, pp. 2467-2471, 2001.
[23]I. F. Akyildiz, J. Xie, and S. Mohanty, “A Survey of Mobility Management in Next-Generation All-IP-based Wireless Networks,” IEEE Wireless Communications, pp. 16-28, Aug. 2004.
[24]A. T. Campbell, J. Gomez, S. Kim, and C.-Y. Wan, “Comparison of IP Micromobility Protocols,” IEEE Wireless Communications, vol. 2, issue 1, pp. 72-82, Feb. 2002.
[25]C.-C. Yang and K.-Y. Lin, “Distributed Mobile Tracking: A Novel Location Management Scheme for Routing Improvement in Cellular IP Networks,” Journal of Computer Networks, vol. 43, issue 2, pp. 147-161, Oct. 2003.
[26]A. A.-G. Helmy, M. Jaseemuddin, and G. Bhaskara, “Multicast-based Mobility: A Novel Architecture for Efficient Micromobility,” IEEE Journal on Selected Areas in Communications (JSAC), vol. 22, no. 4, pp. 677-690 , May 2004.
[27]J.-S. Chiang, Y.-H. Wang, C.-H. Tsai, C.-P. Hsu, “Location Management and Multimedia Communication Service Based on Mobile IP and Cellular IP,”Proc. IEEE International Conference on Advanced Information networking and Applications(AINA), pp. 223-226, Mar. 2003.
[28]K. Omae, M. Inoue, I. Okajima, and N. Umeda, “Handoff Performance of Mobile Host and Mobile Router Employing HMIP Extension,” Proc. IEEE Wireless Communications and Networking Conference (WCNC), vol. 2 , pp. 1218-1223, Mar. 2003.
[29]S.-E. Kim and J. A. Copeland, “TCP for seamless Vertical Handoff in Hybrid Mobile Data Networks,”, Proc. IEEE Global Telecommunication Conference (Globecom), vol. 2, pp. 661-665, Dec. 2003.