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Mobility for IP: Performance, Signaling and Handoff Optimization (mipshop)Last Modified: 2009-05-22 Additional information is available at tools.ietf.org/wg/mipshop
Chair(s):Internet Area Director(s):Internet Area Advisor:Mailing Lists:General Discussion: mipshop@ietf.orgTo Subscribe: mipshop-request@ietf.org In Body: subscribe Archive: http://www.ietf.org/mail-archive/web/mipshop/index.html Description of Working Group:Mobile IPv6 enables IPv6 mobile nodes to continue a session usinga 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 link. 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 infrastructure 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 issues. 3. Handover optimizations when Proxy Mobile IPv6 is used for handovers 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. Goals and Milestones:
Internet-Drafts:IEEE 802.21 Mobility Services Framework Design (MSFD) (55394 bytes)Dynamic Host Configuration Protocol (DHCPv4 and DHCPv6) Options for IEEE 802.21 Mobility Services (MoS) Discovery (31918 bytes) Locating IEEE 802.21 Mobility Servers using DNS (22589 bytes) Fast Handovers for Proxy Mobile IPv6 (80479 bytes) Transient Binding for Proxy Mobile IPv6 (90225 bytes) Request For Comments:Fast Handovers for Mobile IPv6 (RFC 4068) (93591 bytes) obsoleted by RFC 5268Hierarchical Mobile IPv6 mobility management (HMIPv6) (RFC 4140) (71503 bytes) obsoleted by RFC 5380 Mobile IPv6 Fast Handovers for 802.11 Networks (RFC 4260) (35277 bytes) Enhanced Route Optimization for Mobile IPv6 (RFC 4866) (145757 bytes) Mobility Services Transport: Problem Statement (RFC 5164) (33726 bytes) Mobile IPv6 Fast Handovers over IEEE 802.16e Networks (RFC 5270) (42358 bytes) Mobile IPv6 Fast Handovers for 3G CDMA Networks (RFC 5271) (49316 bytes) Distributing a Symmetric Fast Mobile IPv6 (FMIPv6) Handover Key Using SEcure Neighbor Discovery (SEND) (RFC 5269) (32742 bytes) Mobile IPv6 Fast Handovers (RFC 5268) (113090 bytes) obsoletes RFC 4068 Hierarchical Mobile IPv6 Mobility Management (RFC 5380) (58330 bytes) obsoletes RFC 4140 Mobile IPv6 Fast Handovers (RFC 5568) (121373 bytes) |
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