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RAMP: Reconfigurable Architecture
and Mobility Platform
Presenter: Shao-Hsiu Hung
Date: 5th.Dec.2005
1
Outline
Motivations
Reconfigurable Architecture and Mobility
Platform
Testbed implementation and experiment
results
Summary and future work
2
Motivations
The existence of many incompatible wireless
systems will last in the near future



IP mobility protocols, 3GPP, 3GPP2
IP-based but not compatible
How to achieve universal roaming is a big
challenge
A universal common core network

Reconfigurable core network
 Reconfigurable mobility management – RAMP
3
Review of IP Mobility Management
Macro-mobility

Mobile IP (MIP)
Micro-mobility

Tunnel-based
 Hierarchy Mobile IP (HMIP)

Host-specific-route-based
 HAWAII
 Fast Link Layer Inter-domain Handoff (FLIH) –
cross-layer design, distributed location tracking with
broadcast-based strategy
4
Generic IP Mobility Architecture
HA
INTERNET
FA/GW
FA/GW
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Main Requirements of RAMP
With RAMP, both the network and the mobile node
can choose their most desirable mobility
management protocol
The mobile node can change its mobility protocol at
anytime
Standard IP protocol and IP routing should not be
changed
RAMP-unaware network nodes should continue to
work with original IP protocols
Mobile nodes in the same domain can use different
mobility management protocols
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RAMP Architecture
Components


Mobile Node (MN) – collocated with mobile host
Network Node (NN) – collocated with each router
Messages


RAMP Header + Supported Mobility Protocols + Advertisement
RAMP Header + Original Mobility Management Messages
RAMP Header
0
8
Message
Type
Mobility
Type
16
31
Total Length
Lifetime
MN Home Address
32 bits
7
Relation between RAMP and IP
Protocol Stack
Application Layer
TCP/UDP
IP
RAMP
Link Layer
PCN/PCN-C
Physical Layer
8
NN Architecture
..
Mobility Management Module n
Network Node (NN)
Mobility Management Module 2
Mobility Management Module 1
(MMM1)
Mobility
Management
Controller (MMC)
MN information
Database (MID)
Mobility
Register
(MR)
Platform Registrar
(PR)
Platform Controller (PC)
Platform Controller Notifier (PCN)
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MN Architecture
..
Mobility Management Module-Client n
Mobile Node (MN)
Mobility Management Module-Client 2
Mobility Management Module-Client 1
(MMM-C1)
Mobility
Management
Controller (MMC)
Mobility
Register
(MR)
Platform Controller-Client (PC-C)
Platform Registrar-Client
(PR-C)
Mobility
Selector (MS)
Platform Controller Notifier-Client (PCN-C)
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Processing Flow (MN)
RAMP Advertisement
RAMP header
Advertisement
of
MMM 1
Advertisement
of
MMM 2
……
Advertisement
of
MMM n
...
1.
User
Input
Mobility
Selector
(MS)
2.
Platform
Controller-Client
(PC-C)
3.
4.
5.
Mobility
Management
Module-Client x
(MMM-C x)
RAMP MN
6.
RAMP header
Registration request of MMM x
RAMP Registration Request
Send to other RAMP Network Node(s)
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Processing Flow (NN)
RAMP Registration Request
RAMP header
Registration request of MMM x
...
1.
MN
Information
Database
(MID)
2.
Platform
Controller
(PC)
3.
4.
5.
Mobility
Management
Module x
(MMM x)
RAMP NN
6.
RAMP header
Registration request of MMM x
RAMP Registration Request
Send to other RAMP Network Node(s)
12
Testbed Architecture
HA
CN
Micro-Domain1
(HMIP, HWI, FLIH)
FA1/GW1
Host1
GW4
GW7
MN
FA2/GW2
Host2
GW3
AP1
Micro-Domain2
(HWI, FLIH)
AP2
GW8
AP3
GW5
GW9
GW6
GW10
AP4
AP5
GW11
GW12
AP6
MN
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Experiment 1: Reconfiguration
Pkt. Delay (ms)
Domain1
1
2
3
Domain 2
4
5
6
Domain 1
5
4
3
2
1
2
Domain 2
3
4
5
6
Pkt. Sequence
HMIP
FLIH
HAWAII
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Experiment 2: Co-existence
MN1
MN2
AP 1
AP 2
AP 3
AP 2
AP 1
MN1 (using HAWAII)
MN2 (using FLIH)
MN1
AP 2
AP 1
AP 2
AP 3
AP 3
MN2
AP 1
AP 2
AP 3
AP 1
AP 2
AP 3
AP 1
AP 2
AP 3
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Summary
RAMP is a first step toward a reconfigurable core
network to support the universal roaming
RAMP architecture achieves re-configurability for
various mobility management protocols
RAMP architecture is realized without changing
standard IP protocols and applications
RAMP-unaware nodes are not affected
A new direction for the integration of heterogeneous
wireless networks
16
Future Work
Security, QoS and other potential issues
Reconfigurable core network
Integration with cellular systems
17
Publication
Jyh-Cheng Chen, Jui-Hung Yeh, Yi-Wen Lan, Li-Wei
Lin, Fu-Cheng Chen, Shao-Hsiu Hung, “RAMP:
Reconfigurable Architecture and Mobility Platform”, in
Proc. of GLOBECOM 2005, St. Louis, USA, 2005
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