Seamless Handover for Multiple-Access Mobile Node in PMIPv6
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Seamless Handover for Multiple-Access Mobile Node in PMIPv6. draft-cui-netext-pmipv6-shpmipv6-00. Yong cui, Xin Xu , WD. Wang , XM. Li, YZ. Huo , W. Luo. Atlanta, NetExt WG, 2012-11-5. Motivation. RFC 5949 has proposed two modes of fast handover scheme, but both of them have a limit

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Seamless Handover for Multiple-Access Mobile Node in PMIPv6

draft-cui-netext-pmipv6-shpmipv6-00

Yong cui, XinXu, WD. Wang, XM. Li, YZ. Huo, W. Luo

Atlanta, NetExt WG, 2012-11-5


Motivation
Motivation

  • RFC 5949 has proposed two modes of fast handover scheme, but both of them have a limit

    • Just use one interface to handle all packets, even when the interface is under handover

    • The size of packet buffer may be the bottleneck, and the storage-and-forward model may bring a transmission delay

  • It’s possible to use the multi-access features of the MN to solve the problem.


Multi access mn handover scenario
Multi-access MN Handover scenario

LMA

router

PMAG

SMAG

NMAG

IF1

IF2

IF2

IF1

MN

MN


Solutions
Solutions

  • Basic Idea

    • Use the available interface of the MN to handle the packet that transport on the interface under handover

  • Solutions

    • Build a bi-directional tunnel between MAGs that the MN is attaching to

    • When PMAG finds that the interface is under handover, it forwards packet to the SMAG

    • When LMAfinds that the interface has leaved from PMAG afterward , it change its encapsulating destination to the SMAG


Handover signaling
Handover signaling

New interface registration

MAGs intereact

Handovering:

MAG forward packets

Handovering:

LMA forward packets


Message formats
Message formats

  • Streamless Handover Initiate (SHI)

Notice: this message Must include MN-ID option


Message formats1
Message formats

  • Streamless Handover Acknowledge (SHAck)


Next step
Next step

  • Any questions/comments?


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