Cellular IP: Integration with MIP

1
Cellular IP Integration with MIP

• Reference Mobile IP and cellular IP integration
  for inter access networks handoff Carli, M.
  Neri, A. Picci, A.R. Proc. IEEE International
  Conference on Communications (ICC), 2001, pp.
  2467 -2471 (CellularIPIntg-3.pdf)

2
Introduction

• Overall system must be able to manage
• The handoff between cells within the same access
  network
• The handoff between different access networks
• Mobile IP (MIP)
• Used as an inter-subnet mobility protocol
• Macro-mobility
• Cellular IP (CIP)
• Intra subnet mobility
• Micro-mobility
• Paging management

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Introduction (cont)
4
Cellular Intranet
Macro mobility
(Solution 1)
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Cellular Intranet (cont)

• Two levels of mobility management
• The local (Cellular IP)
• The global (Mobile/Cellular IP)
• Gateway (GW)
• Using the FA function, the GW filters the
  micro-mobility traffic within the CIP network
• Note that
• The MS is globally visible only if it is
  registered with the HA and the cache maps of the
  CIP nodes serving the MS are updated

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Cellular Intranet (cont)

• Using CIP/MIP simultaneously in MS
• Inefficient, redundant for mobility management
• Reasons
• CIP uses 2 IP packets (ICMP registration and IP
  Ack)
• MIP uses four UDP/IP packets
• Better solution
• MS macro-mobility operations can be left within
  the GW operations management
• MS moves to a new BS (different access net.)
• 1. MS ? new BS, registration req. for routing to
  the MS
• 2. The remaining path (core network) is organized
  by the MIP, and is managed by GW/FA and HA

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CIP and MIP-RO

• For CIP-MIP protocol pair (solution 1)
• hIP the effective throughput of the traffic
  produced by two fixed sources residing in two
  different IP subnets
• hCIP-MIP the effective throughput of the
  traffic produced by two mobile sources resides in
  two different CIP domains
• am and af (0lt am lt af lt1) relate to the mobile
  host and the fixed host
• Their values represent the percentage of ack.
  (control) traffic introduced by the upper layer
  and the applications used by the mobile host and
  the fixed host

Triangular Routing
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CIP and MIP-RO (cont)

• For CIP MIP-RO (solution 2)

tunneling utilization of binding cache
(Solution 2)
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CIP and MIP-RO (cont)
Steady condition
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CIP and MIP-RO (cont)

• Protocol efficiency of CIPRO-MIPRO

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Inter-CIP Handoff
Using CIP-MIP pair
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Semi-soft Inter-CIP Handoff
Using CIPRO-MIPRO pair
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Conclusion

• Two solutions for the management of cellular
  intranet are proposed
• CIP-MIP
• Centralized on the gateway and the home agent
• Suited for security needs and client/server
  traffic model
• CIPRO-MIPRO
• Offers optimized routing
• Speeds up handoff procedure
• May support real-time traffic