1. Correspondent Information Route Optimization Scheme on Proxy Mobile IPv6
Sungkyunkwan University
Department of Electrical and Computer Engineering
Young-Hyun Choi
Advising Professor : Tai-Myoung Chung

2. Introduction Mobile IPv6 Proxy MIPv6 Routing Optimized(RO) PMIPv6
The Mobile Node(MN) is involved in all mobility signaling
Problem : MN has limited processing power, Battery, Memory resource
Proxy MIPv6
Network-based mobility management service
All mobility signaling is controlled through the network entities
Problem : The triangle routing problem that causes inefficient routing path
Routing Optimized(RO) PMIPv6
Liebsch’s scheme : Heavy signaling cost
Dutta’s scheme : Reduce signaling cost
One-way Routing path problem
Fig. 1 Proxy Mobile IPv6 operation process

3. Related Work Liebsch’s RO scheme Dutta’s RO scheme
LMA
MN 1
①, ⑦ Data (MN1 → MN2)
⑥, ⑨ Data (MN1 → MN2)
MN 2
MAG1
MAG2
⑤ Data (MN1 → MN2)
⑧ Data (MN1 → MN2)
② Data (MN1 → MN2)
③ CBU (MN2, MAG2)
④ CBA (MN2, MAG2)
LMA
MN 1
①, ⑪ Data (MN1 → MN2)
⑩, ⑬ Data (MN1 → MN2)
MN 2
MAG1
MAG2
③ RO Init
④ RO Init Ack
⑦ RO Report
⑧ RO Report Ack
⑨ Data (MN1 → MN2)
⑫ Data (MN1 → MN2)
② Data (MN1 → MN2)
⑤ RO Setup
⑥ RO Setup Ack
Fig. 2 RO in proxy mode of Liebsch
Fig. 3 Light Weight RO of Dutta: MN1→MN2

4. Suggestion (1/2) Correspondent Information Route Optimization (CIRO)
CIRO scheme solves Dutta’s inefficient signaling cost problem
CIRO uses CI message
Correspondent Information(CI) message
Between MAGs
Supplies the MAG1 with MN2’s information
LMA sends the MN1’s address, the MN2’s address and the MAG2’s address information
Finally, MAG1 and MAG2 could know MN1 and MN2’s information 1 2 3 4 5 6 7 8 9
Sequence # A H L K M R P C I
Reserved
Lifetime
Mobility options
TABLE I. Message Formation of CIRO

5. Suggestion (2/2) Correspondent Information Route Optimization (CIRO)
MN1
MN2
MAG1
MAG2
LMA
Data (MN1 → MN2)
CBI (MN2, MAG2)
Data (MN2 → MN1)
CBU (MN2, MAG2)
CBA (MN2, MAG2)
Signaling for Binding
MN1’s ID, MN2’s ID
MAG2’s address
MN2’s HNP
LMA
MN 1
①, ⑧ Data (MN1 → MN2)
⑦, ⑩ Data (MN1 → MN2)
MN 2
MAG1
MAG2
⑥ Data (MN1 → MN2)
② Data (MN1 → MN2)
③ CI (MN2, MAG2)
④ CBU (MN2, MAG2)
⑤ CBA (MN2, MAG2)
⑨ Data (MN1 → MN2)
Fig. 4 Flow diagram of CIRO
Fig. 5 Sequence diagram of CIRO

6. Handover (1/3) How to Route Optimization on Handver of Liebsch
LMA
MN 1
MN 2
MAG2
①, ⑪ Data (MN1 → MN2)
⑩, ⑬ Data (MN1 → MN2)
MAG1
MAG3
③ RO Init
④ RO Init Ack
⑥ RO Setup Ack
⑤ RO Setup
⑫ Data (MN1 → MN2)
② Data (MN1 → MN2)
⑨ Data (MN1 → MN2)
⑦ RO Report
⑧ RO Report Ack
Fig. 6 Flow Diagram of Proxy Mode of Liebsch on Handover

7. Handover (2/3) How to Route Optimization on Handver of Dutta
LMA
MN 1
MN 2
MAG2
①, ⑨ Data (MN1 → MN2)
② Data (MN1 → MN2)
⑧, ⑪ Data (MN1 → MN2)
MAG1
MAG3
③ CBU (MN2, MAG3)
⑦ Data (MN1 → MN2)
⑤ CBU (MN2, MAG3)
⑥ CBA (MN2, MAG3)
⑩ Data (MN1 → MN2)
④ CBA (MN2, MAG3)
Fig. 7 Flow Diagram of LWRO of Dutta on Handover

8. Handover (3/3) How to Route Optimization on Handver of CIRO
LMA
MN 1
MN 2
MAG2
①, ⑧ Data (MN1 → MN2)
② Data (MN1 → MN2)
⑤, ⑩ Data (MN1 → MN2)
MAG1
MAG3
③ CI
(MN2, MAG3)
③ CI (MN2, MAG3)
④ Data (MN1 → MN2)
⑥ CBU (MN2, MAG3)
⑦ CBA (MN2, MAG3)
⑨ Data (MN1 → MN2)
Fig. 8 Flow Diagram of CIRO on Handover

9. Numerical Results
Fig. 9 Signaling Cost on basic operation - Simulation results
Fig. 10 Signaling Cost on Handover - Simulation results

10. Reference
D. Johnson et al., “Mobility Support in IPv6”, RFC3775, June
J.-M. Lee, et al., "Performance Analysis of Route Optimization on Proxy Mobile IPv6", I CSNC, October 2008.
S. Gundavelli et al., "Proxy Mobile IP6", RFC 5213, August
A. Dutta et al,. "PMIP Extension for Inter-MAG Route Optimization", Internet draft, Jul y
M. Liebsch et al., "Route Optimization for PMIPv6", Internet draft, November
S. Pack et al., "A study on performance of Hierarchical Mobile IPv6 in IP-based cellular networks", IEICT Trans. Commun., vol.E87-B, no.3, March
S. Park et al., "Localized PMIPv6 with Route Optimization in IP based Networks", IEICT Trans. Commun., vol.E90-B, no.12, December
J Xie et al., " An optimal location management scheme for minimizing signaling cost in mobile IP", Proc. IEEE ICC 2002, vol.5, pp , April
X. Zhang et al., "P-MIP: Paging extentions for mobil IP", ACM Mobile Networks and Ap plications, vol.7, no.2, pp , April
Young-Hyun Choi and Tai-Myoung Chung, "Enhanced Light Weight Route Optimizatio n in Proxy Mobile IPv6", NCM, pp , 2009 Fifth International Joint Conference o n INC, IMS and IDC, August, 2009.
J. Lee, et al., "Performance Analysis of Route Optimization on Proxy Mobile IPv6", ICSN C, October 2008.
J. -H. Lee, J. -H. Lee, and T. -M. Chung, "A NHovel Inter-LMD Handoff Mechanism for Network-Based Localized Mobility Management", NEW2AN 2007, LNCS 4712, pp , September, 2007.