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Published byLoraine Fowler Modified over 9 years ago
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Network-based localized Mobility Management (NETLMM)
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NetLMM Overview 1.Introduction 1.1-Mobility Management 1.2-Mobile IPv6 Problem 2.Related Work 2.1-MIPv6 and HMIPv6 2.2-Summary 3.NetLMM Approach 3.1-Overview 3.2-Message flow 3.3-Handoff ’s Message Flow 3.4-Compare To Mobile IPv6 4.Data Flow
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Introduction Mobility Management Mobility management – 找到行動用戶目前所在的位置 – 傳送和接受資料封包 – 保持行動用戶的連接 如同行動用戶不斷地移動改變他所附著的基地台 Mobile IPv6 (MIPv6) –Ipv6 是個眾所周知的成熟標準, IPv6 的標準中內建支援行動 IP(Mobile IP). 的功能,使得在 IPv6 的環境下要行動上網更加方 便。 – 能夠解決在 mobile ipv4 下所碰到的許多問題 )
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Introduction Mobile IPv6 Home Network HAAP MN CN Care-of-Address Move Foreign Network Care-of-Address Binding Update message Return Routability Binding Update Message for CN
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Introduction Mobile IPv6 Problem ‧ 仍然顯示出一些問題例如換手延遲、封包遺失、 signaling overhead – 本章節焦點著重在 handover latency ‧ MN 從一個 foreign network 移動到另一個 foreign network 時
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Related Work MIPv6 and HMIPv6 如同前面所提到的 MIPv6 仍然是有些問題 – 像是換手延遲、封包遺失和 signaling overhead Hierarchical Mobile IPv6( 階層式 Mobile IPv6) –"Hierarchical Mobile IPv6 Mobility Management (HMIPv6)“, IETF RFC 4140, Aug. 2005 –HiMIPv6 延伸了 Mobile IPv6 的功能 – 考慮到區域行動性的處理
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HA Related Work Hierarchical Mobile IPv6 Home Network MAP AR MAP domain ARMN On-link Care-of-Address (LCoA) Regional Care-of-Address (RCoA) Move Foreign Network CN
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Related Work Summary Mobile IPv6 仍然是有些問題存在 Hierarchical Mobile IPv6 – 延伸了 MIPv6 的功能 – 改善換手延遲 – 考慮到 local mobility handling – 須要修改到 MN Proxy Mobile IPv6(PMIPv6) – 改善換手延遲更優於 HMIPv6 – 不須要修改到 MN
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NetLMM Approach Overview NetLMM 為 IETF 所制訂的網際網路標準 屬於一種基於網路移動性管理的協定 ) 必須依賴眾多通訊基地台的合作來代替 MN 做移動性的管理 )
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NetLMM Approach Overview Home Network LMA LMA(Local Mobility Anchor) MAG(mobile access gateway) NETLMM domain –(network-based localized mobility management domain)
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NetLMM Approach Overview LMA(Local Mobility Anchor) MAG(mobile access gateway) NETLMM domain –(network-based localized mobility management domain) Home Network LMA MAG
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NetLMM Approach Overview LMA(Local Mobility Anchor) MAG(mobile access gateway) NETLMM domain –(network-based localized mobility management domain) Home Network LMA MAG NETLMM domain
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NetLMM Approach Overview Home Network LMA MAG NETLMM domain MN CN Foreign Network LMA(Local Mobility Anchor) MAG(mobile access gateway) NETLMM domain –(network-based localized mobility management domain)
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NetLMM Approach Message Flow 1.MN Attachment 2.AAA query with MN-ID 3.AAA reply with profile 4.PBU with MN-ID 5.AAA query with MN-ID 6.AAA reply 7.PBA with MN-ID, home network prefix option(Per-MN Prefix model)
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NetLMM Approach Message Flow (1) MN Attachment
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(2) AAA query with MN-ID NetLMM Approach Message Flow
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(3) AAA reply with profile
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NetLMM Approach Message Flow (4) PBU with MN-ID
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NetLMM Approach Message Flow (5) AAA query with MN-ID
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NetLMM Approach Message Flow (6) AAA reply
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NetLMM Approach Message Flow (7) PBA with MN-ID, home network prefix option
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NetLMM Approach Message Flow (8)Bidirectional tunnel setup & Router Advertisement
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Foreign Network Home-of-Address NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Move Foreign Network NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Foreign Network MN Attachment NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Foreign Network Proxy Binding Update message NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Foreign Network Proxy Binding Ack NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Foreign Network Router advertisement NETLMM domain
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NetLMM Approach Handoff ’s Message Flow Home Network LMAMAG1 MAG2 MN CN Home-of-Address Foreign Network NETLMM domain
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NetLMM Approach Compare To Mobile IPv6 30
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Data Flow Data transport mode(Tunnel) : IP in IP
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