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• IEEE 802.21 MEDIA INDEPENDENT HANDOVER

• DCN:21-06-068500-0000

• Title: IETF Liaison Report

• Date Submitted: July 20, 2006

• Presented at IEEE 802.21 session in San Diego

• Authors or Source(s):

• Yoshihiro Ohba

• Abstract: This is IETF Liaison Report on July 2006

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IEEE 802.21 presentation release statements

• This document has been prepared to assist the IEEE 802.21 Working Group. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.

• The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.21.

• The contributor is familiar with IEEE patent policy, as outlined in Section 6.3 of the IEEE-SA Standards Board Operations Manual <http://standards.ieee.org/guides/opman/sect6.html#6.3> and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> 

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MIPSHOP WG

• Revised MIPSHOP charter approved – containing MIH protocol transport support

• 802.21 D01.00 review completed on May 22, 2006 -- no comment received

• IETF66 in July, 2006• MIH problem statement draft

• draft-hepworth-mipshop-mih-problem-statement-02• Containing the official MIH transport requirements from 802.21 WG• Trying to support multiple Mobility Support Services including MIH• Will be a WG draft

• MIH design considerations draft• draft-hepworth-mipshop-mih-design-considerations-00.txt• Addressing detailed issues

• Three MIH transport proposals in total, the 1st two are new drafts• MIH over UDP

– draft-rahman-mipshop-mih-transport-00.txt• MIH over GIST (General Internet Signaling Protocol)

– draft-hancock-mipshop-gist-for-mih-00.txt• MIH over DHCP (for IS only)

– draft-jang-mipshop-nhdisc-00.txt• Other MIH related draft in MIPSHOP WG

• Network Initiated Handovers PS (draft-melia-mobopts-niho-ps)• Other MIH related draft in DHC WG

• IS server discovery using DHCP (draft-daniel-dhc-mihis-opt-01.txt)

• Possible next step: 802.21 WG review of MIH-related MIPSHOP WG drafts

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DNA WG

• “Link-layer Event Notifications for DNA” draft (draft-ietf-dna-link-information-03.txt) is already submitted to the IESG

• There were some concerns raised about the presence of link down events in the link-information draft

• DNAv4 will ignore link down events, and generating such events would actually be harmful to operating systems or applications that tear down connections on receipt of "link down" events

• It is proposed to remove link down event info from the document

• 802.21 is not mentioned in the link-information draft• AD’s comment: Once DNA WG finishes most of what it is

working on now and there are proposals that talk about details and motivation for 802.21 support, they can work on it

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2nd HOAKEY BOF in IETF66

Three topics were presented: EAPext, Pre-authentication, Handover keying

Discussion on high-level requirements Inter-technology handover must be supported Inter-domain handover must be supported

There was a clear consensus on forming a new WG A new WG is most likely to be formed before IETF67

Needs discussion on detailed requirements over mailing list

Possible next step in 802.21 WG: write-up problem statement on media-independent pre-authentication and key management and run a motion on creating a Study Group in the next interim in September

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Persistent URL for 802.21 IS Basic Schema

• IANA indicated that they can allocate a persistent URL for 802.21 Basic Schema which is an RDF schema

• IANA RDF schema registry:• http://www.iana.org/assignments/xml-registry/rdfschema.html• What is registered: (ID, URI, Filename, Reference)

• Allocation policy for RDF schema [RFC3688]: First Come First Serve, with Specification Required

• “Specification Required - Values and their meaning must be documented in an RFC or other permanent and readily available reference, in sufficient detail so that interoperability between independent implementations is possible.”

• IANA suggested writing an Information RFC for 802.21 Basic Schema

• IANA also contacted to IESG on this issue• IESG do not think that the community will comment or suggest changes

that the authors will have to accept• If the community comments anyway, the IEEE WG can decide whether

or not to take the comments on board

• Next step: Writing-up an Informational RFC on the Basic Schema after Sponsor Ballot