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Streamless Handover for Multiple-Access Mobile Nodes in PMIPv6

This paper explores a novel solution for fast handover in PMIPv6 by leveraging the multi-access capabilities of Mobile Nodes (MNs). It addresses the limitations posed by conventional fast handover mechanisms in RFC 5949, notably the bottleneck of packet buffers and potential transmission delays. The proposed approach includes establishing bi-directional tunnels between Mobility Anchors (MAGs) and facilitating packet forwarding even during interface transitions. Detailed message formats for Streamless Handover Initiate (SHI) and Acknowledge (SHAck) are provided to streamline the process and enhance overall network efficiency.

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Streamless Handover for Multiple-Access Mobile Nodes in PMIPv6

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  1. 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

  2. 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.

  3. Multi-access MN Handover scenario LMA router PMAG SMAG NMAG IF1 IF2 IF2 IF1 MN MN

  4. 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

  5. Handover signaling New interface registration MAGs intereact Handovering: MAG forward packets Handovering: LMA forward packets

  6. Message formats • Streamless Handover Initiate (SHI) Notice: this message Must include MN-ID option

  7. Message formats • Streamless Handover Acknowledge (SHAck)

  8. Next step • Any questions/comments?

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