Mobile%20IPv6%20Handover%20Using%20Home%20Agent%20Buffering

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Mobile IPv6 Handover Using Home Agent Buffering
draft-xia-mipshop-ha-buffering-01

• Frank Xia
• Behcet Sarikaya
• Basavaraj Patil
• Nov 2008

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Scenario description

• A mobile node moves from domain A to domain B
• The mobile nodes is running internet
  applications. Many of them are based on TCP which
  is sensitive to packet loss
• Incoming packets will be dropped by the PAR
  during the handover because the mobile node has
  not connected to the PAR any more.

Domain A
Domain B
Previous AR
New AR
Previous AP
New AP
MN
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Limitation of FMIP and HMIP

• FMIPHMIP are ideal mechanisms dealing handovers.
  However
• FMIP requires PAR and NAR signaling exchange,
  while HMIP conceptually introduces a new network
  entity, Mobility Anchor Point (MAP).
• These requirements decide that it is hard to
  deploy FMIP and HMIP in inter-domain handover
  scenarios.

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Solution

• Handover Preparation.
• Layer 2 handover indication triggers the
  mobile node sending a transient Binding Update
  message to a home agent
• Handover Execution.
• The home agent buffers all packets destined
  to the mobile node
• Handover Completion.
• The mobile node sends a Binding Update with a
  new care-of address, and the home agent delivers
  the buffered packets to the mobile node.

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New Mobility Option
The option can be included in Binding Update and
Binding Acknowledgement messages. When lifetime
expires, the home agent will purge all the
buffered packets for the MN.
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Make it a WG item? Comments?
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Thank You.