Mobility Management Protocols for Wireless Networks By Sanaa Taha
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Mobility Management Protocols
for Wireless Networks
By
Sanaa Taha
outline
Mobility Management
Mobility Management Models
Host-based Mobility Management
Protocols
Network- based Mobility Management
Protocols
Which is the best ?!
Conclusions
Sanaa Taha MMPs for Wireless Networks 2
Mobility Management
Fundamental technology used to
automatically support MTs enjoying their
services while simultaneously roaming
with uninterrupted communication
Most important and challenging problem
for seamless access of wireless networks
Location management and Handover
management
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Location Mobility
Database architecture design
Messaging Procedure design
Transmission of signalling
Security
Dynamic DB updates
Querying delays
Terminal Paging
Paging delays
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Handover Management
Intracell HO / Intercell HO
Soft HO/ Hard HO
Pkt processing
Signalling load
Optimizing connection
BW reassignment
Refining QoS
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How to choose MM protocol?
Fast handover
Seamless Handover ( Pkt loss = 0)
Signalling Overhead ( ctr data load, DB
access)
Routing efficiency
QoS
Fast Secrity ( key exchange)
Special changes
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Mobility Management Models
1- General Mobility Management Model
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Mobility Management Models
2- Hierarchical Mobility Management Model
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Host-based Mobility Management
Protocols General Model/ Macro mobility
Mobile IP
◦ location-independent routing
◦ Movement detection and agent discovery
◦ Registration
◦ Tunneling and routing (triangular routing)
◦ Transparency to upper layers
◦ High latency handoff
◦ High signalling load
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MIPv6
Bigger address space
Support for address renumbering
Improve header processing
Reasonable security
The problem of reverse tunnelling is
solved without affecting the operation of
ingress filtering (Optimization route)
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Host Identity Protocol
Separates the end-point identifier and
locator roles of IP addresses
Host Identity name space based on PKI
Provides secure methods for IP
multihoming and mobile computing
IP addresses are replaced with
Cryptographic host Identifier
Cryptographic keys are self-generated
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Network based Mobility
Management Protocols
Micro/ Intra domain mobility
Fast handoff
Reduction in pkt loss
Reduction in mobility-related signalling
Support for multipath distribution
techniques- high transmission reliability
Support for QoS
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Cellular IP – Proxy MIP
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Hierarchical MIP
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Handoff-aware wireless Access
Internet Infrastructure (HAWAII)
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What is the best ?!
Features MIPv6 MobiSplit IP2MN FMIPv6 PMIPv6
Local/Global domain Global Both Global Global Local
Pkt loss Yes Yes Yes No/Yes Yes
Muli-homing No Yes No No Yes
Air interface- Traffic
overdead
High Low Low High Low
Terminal
Modification
Yes No Yes Yes No
Tunneling overhead
at MN
High Low No High No
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What is the best ?!
Number of stations
Handoff rate
Number of CNs
Wired link delay
Random movement
Traffic sources (video, voice)
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Conclusions
MIPv6 is the standard global mobility
management protocol, however it does
not support multi-homing MNs
FMIPv6 mitigates MIPV6 by proactively
perform the handover process
Local mobility management protocols do
not help for high mobility environment
(opinion!)
Solutions? …. Merging
Sanaa Taha MMPs for Wireless Networks 18
Thank you
Questions??
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