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Mobility for IP: Performance, Signaling and Handoff Optimization

Document Charter Mobility for IP: Performance, Signaling and Handoff Optimization WG (mipshop)
Title Mobility for IP: Performance, Signaling and Handoff Optimization
Last updated 2010-09-07
State Approved
WG State Concluded
IESG Responsible AD Jari Arkko
Charter edit AD (None)
Send notices to (None)

Mobile IPv6 enables IPv6 mobile nodes to continue a session using
  a given "home address" in spite of changes in its point of
  attachment to the network. These changes may cause delay, packet
  loss, and also represent signaling overhead traffic on the network.
  The MIPSHOP WG has so far worked on two technologies to address
  these issues. Hierarchical Mobile IPv6 (HMIPv6) reduces the amount
  and latency of signaling between a MN, its Home Agent and one or
  more correspondent nodes. Mobile IPv6 Fast Handovers (FMIPv6)
  reduces packet loss by providing fast IP connectivity as soon as
  the mobile node establishes a new point of attachment at a new
  The MIPSHOP WG will continue to work on HMIPv6 and FMIPv6, and
  the necessary extensions to improve these protocols. The MIPSHOP
  WG will also identify missing components that are required for
  deploying these protocols and standardize the necessary extensions.
  The WG will also address using these protocols to provide fast
  handovers for network-based mobility management protocols like
  Proxy Mobile IPv6.
  The IEEE 802.21 Media Independent Handover (MIH) working group aims
  at providing services to assist with handoffs between heterogeneous
  link-layer technologies, and across IP subnet boundaries. MIH
  services can be delivered through link-layer specific solutions
  and/or through a "layer 3 or above" protocol. MIPSHOP will define the
  delivery of information for MIH services for this latter case. A L3
  based mechanism to identify a valid information server is also
  required. The MIPSHOP will work on developing a protocol for
  transport of MIH services information and mechanisms for discovering
  the MIH server. Security for the transport of MIH information will
  also be addressed.
  The MOBOPTS Research Group in the IRTF is chartered to work on
  optimizations related to Mobile IPv6 and IP handoffs among other
  things. The MIPSHOP WG will take mature proposals from the MOBOPTS
  group and standardize them in the IETF on a case-by-case basis.
  The MIPSHOP WG will also consider and standardize optimizations for
  the Mobile IPv6 protocol and IP mobility in general.
  Scope of MIPSHOP:
  The working group will work on:
  1. FMIPv6 Mobile Node - Access Router security using the AAA
  Currently MIPSHOP has produced a standards track protocol for
  setting up security between the mobile node and access router
  for security FMIPv6 signaling messages. However, the protocol
  depends on SeND (Secure Neighbor Discovery) to be available on
  the mobile node and the access router. An alternate mechanism
  that leverages the AAA infrastructure would be useful. Many
  target systems where FMIPv6 is likely to be used use a AAA
  infrastructure to authenticate and authorize network access.
  The working group will work on a Informational document describing
  how the AAA infrastructure could be used for setting up security
  associations between the mobile node and the access router.
  2. Prefix Management for point-to-point links with FMIPv6
  Using FMIPv6 over point-to-points like requires some additional
  considerations with respect to managing and allocating prefixes
  for the mobile node on these point-to-point links. Therefore
  the WG will work on an Informational document to address the
  3. Handover optimizations when Proxy Mobile IPv6 is used for
  Proxy Mobile IPv6 (PMIPv6) is a network-based mobility
  management protocol where a node in the access network, called
  the Mobile Access Gateway (MAG) handles mobility on behalf of
  the mobile node. It has been proposed to use FMIPv6 to
  optimize the handover in terms of reducing the packet loss and
  transferring relevant context from the old MAG to the new MAG.
  The working group will also work on other optimizations like
  the use of a transient binding cache entry for improving a
  PMIPv6-based handover.
  4. Work on protocols and extensions for transporting information
  related to IEEE 802.21:
  The work includes the layer 3 protocol for transporting MIH
  related information and DHCP and DNS extensions for discovering
  the information servers.