Transcript NETLMM protocol proposal Ippei Akiyoshi Marco Liebsch NEC

NETLMM protocol proposal
draft-akiyoshi-netlmm-protocol-00.txt
Ippei Akiyoshi
Marco Liebsch
NEC
November 7, 2005
1
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.
2
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
3
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.
(a)
=> 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.
EMAP’s subnet
Location Registration
with MN ID
Attach
RA
(b) Tunnel for
packet delivery
AR2
RA
AR3
Attach
MN#2
MN#1
Handover
Power on
(c)
(c)DAD using MN-ID
EMAP
AR1
(b)
RA
(a)Prefix of
EMAP’s subnet
4
How to operate ~ Attachment ~
MN
AR1
EMAP
CN
Power ON
Attach
(MN-IP)
Create cache
LR Request
(MN-ID, MN-IP, AR1)
DAD check
Create cache
Register
MN’s location
with EMAP &
create a cache
LR Ack
DAD succeed
Data Traffic
5
How to operate ~ Handover ~
MN
New AR
Previous AR
CN
EMAP
Data Traffic
Moving from
NAR to PAR
Attach
(MN-IP)
Create
cache
LR Request
(MN-ID, MN-IP, AR2)
Update
Update MN’s location &
cache
create a new cache
LR Ack
Data Traffic
Delete
cache
LD Request
(MN-ID, MN-IP)
LD Ack
Delete MN’s cache
on the previous AR
6
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.
7