network-based localized mobility management (netlmm)
TRANSCRIPT
Network-based localized Mobility Management(NETLMM)
NetLMM Overview1.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
IntroductionMobility 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 )
IntroductionMobile 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
Related WorkMIPv6 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
Related WorkSummary
• 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
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 )
NetLMM Approach Overview
Home Network
LMA
• LMA(Local Mobility Anchor)
• MAG(mobile access gateway)
• NETLMM domain
– (network-based localized mobility management domain)
NetLMM Approach Overview
• LMA(Local Mobility Anchor)
• MAG(mobile access gateway)
• NETLMM domain
– (network-based localized mobility management domain)
Home Network
LMAMAG
MAG
NetLMM Approach Overview
• LMA(Local Mobility Anchor)
• MAG(mobile access gateway)
• NETLMM domain
– (network-based localized mobility management domain)
Home Network
LMAMAG
MAG
NETLMM domain
NetLMM Approach Overview
Home Network
LMAMAG
MAG
NETLMM domain
MN
MNCN
Foreign Network
• LMA(Local Mobility Anchor)
• MAG(mobile access gateway)
• NETLMM domain
– (network-based localized mobility management domain)
NetLMM ApproachMessage 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)
NetLMM ApproachMessage Flow
(1) MN Attachment
(2) AAA query with MN-ID
NetLMM ApproachMessage Flow
NetLMM ApproachMessage Flow
(3) AAA reply with profile
NetLMM ApproachMessage Flow
(4) PBU with MN-ID
NetLMM ApproachMessage Flow
(5) AAA query with MN-ID
NetLMM ApproachMessage Flow
(6) AAA reply
NetLMM ApproachMessage Flow
(7) PBA with MN-ID, home network prefix option
NetLMM ApproachMessage Flow
(8)Bidirectional tunnel setup & Router Advertisement
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2
MN
CN
Foreign Network
Home-of-Address
NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
MoveForeign Network
NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
Foreign Network
MN Attachment NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
Foreign Network
Proxy Binding Updatemessage
NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
Foreign Network
Proxy Binding Ack
NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
Foreign Network Router advertisement
NETLMM domain
NetLMM ApproachHandoff ’s Message Flow
Home Network
LMAMAG1
MAG2MN CN
Home-of-Address
Foreign Network
NETLMM domain
NetLMM ApproachCompare To Mobile IPv6
30
Data Flow
Data transport mode(Tunnel) ：
IP in IP