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研究生:邱榮嘉
研究生(外文):Jung-Chia Chiu
論文名稱:改善階層行動IPv6網路Handoff之效能
論文名稱(外文):Improved Handoff Performance in Hierarchical Mobile IPv6 Networks
指導教授:賴威光賴威光引用關係
指導教授(外文):W. K. Lai
學位類別:碩士
校院名稱:國立中山大學
系所名稱:資訊工程學系研究所
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:2004
畢業學年度:92
語文別:中文
論文頁數:49
中文關鍵詞:封包遺失轉交位址移動式IP家位址
外文關鍵詞:Care-of addressPacket lossHome addressMobile IP
相關次數:
  • 被引用被引用:1
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  • 下載下載:11
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隨著時代的進步,越來越多的無線行動裝置產生,這些網路節點離開原網路或進行網路漫遊的現象變得十分普遍,因此網際網路標準組織IETF成立了行動網際網路位址工作小組(Mobile IP Working Group)以制訂支援網際網路位址行動能力(mobility)的相關標準,移動式IP(Mobile IP)的協定與相關技術因此得以制訂。移動式IP的原理也十分簡單,主要是讓一個行動節點(mobile node)有二個位址,一個是家位址(home address),另一個是轉交位址(care-of address, CoA);當有傳送給這個mobile node的封包就會轉傳給home address,而在home network的路由器收到封包時就會再轉傳給CoA。節點每改變一次移動位址都會向其家位址網域的路由器做更新的動作,若是mobile node的移動過於頻繁將導致更新的動作頻繁,所以有人提出了Hierarchical Mobile IPv6(HMIPv6)來藉由分為micro-mobility及macro-mobility解決這個問題,不過仍然存在著handoff延遲及封包遺失的缺點;我們提出一個簡單的改善方法,在移動時減少等待Duplicated Address Detection(DAD) 所造成的延遲時間,並用一點小技巧來減少封包遺失的機會。
In wireless/mobile networks, users freely change their service point while they are communicating with other users. In order to support the mobility of mobile nodes, Mobile IPv6 (MIPv6) is proposed in IETF, in which an MN must inform its home agent the binding of its home address and the current care-of address (CoA). The home agent forwards packets to CoA when it receives packets for the MN.
There is a significant problem in MIPv6 due to its inability to support micro-mobility cause by long delay and high packet loss during handover. Hierarchical mobile IPv6 (HMIPv6) is proposed to separate mobility into micro-mobility (within one domain) and macro-mobility (between domains). HMIPv6 introduced a new protocol element called Mobility Anchor Point (MAP) to manage the mobility. HMIPv6 can reduce the delay and the amount of signaling during handover. However HMIPv6 only improves micro mobility problem where the significant delay still occurs in macro mobility management. Duplicate address detection and the transmission time during the handoff operation could cause high delays.
This paper considers handover operations. By simulations, we show that the proposed scheme can realize low handoff delay and packet loss during handover.
Chapter 1 Introduction 1
1.1 Introduction 1
1.2 Motivation 2
1.3 Paper Organization 3
Chapter 2 Background & Related Work 4
2.1 The IETF Mobile IPv6 4
2.1.1 Terms 6
2.1.2 Operation 7
2.2 Handoff Latency 9
2.3 Hierarchical Mobile IPv6 12
2.3.1 Term 12
2.3.2 Mobile Node Operation 13
2.4 Autoconfiguration 16
2.5 New IPv6 Protocol, Message Types, and Destination Option 18
2.5.1 IPv6 Basic Header 19
2.5.2 IPv6 Extension Header 19
2.5.3 Home Address Destination Option Header 19
2.5.4 Mobility Header 20
2.5.5 Neighbor Discovery extension – MAP option 21
Chapter 3 Proposed Scheme 22
3.1 Basic Idea of proposed scheme 22
3.2 Processing 25
3.2.1 Marco Movement 25
3.2.2 Micro Movement 27
3.2.3 MAP Operation 28
Chapter 4 Simulation and Analysis 30
4.1 Basic Simulation Setting 30
4.2 Simulation Result and Analysis 32
4.2.1 Handoff Delay 32
4.2.2 Packet Loss 36
Chapter 5 Conclusion 39
References

[1]D. Johnson and C. Perkins, “Mobility Support in IPv6,” IETF draft, draft-ietf-mobileip-ipv6-24.txt, June 2003.
[2]H. Soliman et al., “Hierarchical MIPv6 Mobility Management,” IETF draft, draft-ietf-mobileip-hmipv6-08.txt, June 2003.
[3]I. vivaldi et al., “Routing Scheme for Macro Mobility Handover in Hierarchical Mobile IPv6 Network”, 2003
[4]T. Narten, E. Nordmark, W. Simpson, “Neoghbor Discovery for IP Version 6 (IPv6)”, IEFT RFC2461, December 1998.
[5]G.Daley, B.Pentland and R.Nelson, “Effects of Fast Router Advertisement on Mobile IPv6 Handovers”, 2003
[6]S. Deering, R. Hinden,“Internet Protocol, Version 6 (IPv6) Specification ”, IETF RFC2460, Decemner 1998.
[7]K. Baba, et. al,. “Fast Handoff L2 Trigger API,” draft-singh-l2trigger-api-00.txt, October 2002.
[8]S. Thomson, T. Narten, “IPv6 Stateless Address Autoconfiguration”, IEFT RFC2462, December 1998.
[9]T.Narten, E.Nordmaek, and W.Simpson. RFC 2461 Neighbor Discovery for IP Version 6 (IPv6), 1998.
[10]P. de Silva, H. Sirisena, “A mobility Management Protocol for IP-based Cellular networks, Proc. IEEE ICCCN 2001, Scottsdale AZ, October 2001
[11]Matrix Net Systems web site: http://average.matrix.net/
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