NETLMM protocol proposal draft-akiyoshi-netlmm-protocol-00.txt Ippei Akiyoshi Marco Liebsch NEC November 7, 2005

Motivation Diversification of global mobility protocols Different global mobility protocols will be used in a mobile network such as MIP, HIP and MOBIKE. Hierarchical mobility management enables better scalability Reducing round trip time of a registration for local movement Necessity for localized mobility protocol Common localized IP mobility protocol is necessary.

Design Concept Make a local network form a virtual router Supporting multiple mobility protocols NETLMM operation must be independent of a particular access technology Support of various access technologies Use NDP or link-layer trigger for NETLMM support Minimum packet overhead in a wireless link Efficient use of wireless resources

Overview of proposed NETLMM protocol NETLMM protocol is defined between: EMAP : A mobility anchor point in a local network AR : A router which registers MN’s location with EMAP Each AR advertises the prefix of EMAP’s subnet. => Inter-AR handover is transparent to global mobility protocol. Packets are delivered through a tunnel between EMAP and AR. MN Identifier is introduced for DAD in the EMAP’s subnet. (a) (b) (c) EMAP AR1 AR2 AR3 EMAP’s subnet MN#1 RA MN#2 Attach Location Registration with MN ID (c)DAD using MN-ID Handover Power on (a)Prefix of EMAP’s subnet (b) Tunnel for packet delivery

How to operate ~ Attachment ~ MN AR1 EMAP CN Power ON Attach (MN-IP) Create cache LR Request (MN-ID, MN-IP, AR1) Register MN’s location with EMAP & create a cache DAD check Create cache LR Ack DAD succeed Data Traffic

How to operate ~ Handover ~ MN New AR Previous AR EMAP CN Data Traffic Moving from NAR to PAR Attach (MN-IP) Create cache LR Request (MN-ID, MN-IP, AR2) Update MN’s location & create a new cache Update cache LR Ack Data Traffic LD Request (MN-ID, MN-IP) Delete MN’s cache on the previous AR Delete cache LD Ack

Conclusion Our proposed NETLMM protocol realizes scalable mobility solutions supporting multiple global mobility protocols. Multiple EMAP configuration and route optimization option should also be considered for the next step. See Appendix of the I-D.