1. 21-07-0423-01-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-07-0423-01-0000 Title: MIH Handover Initiation Strategy Consistency Date Submitted: November, 2007 Presented at IEEE 802.21 session #23 in Atlanta Authors or Source(s): Junghoon Jee, Changmin Park, Hongseok Jeon Abstract: IEEE P802.21/D7.1 specifies MIH handover procedures to support target network selection among heterogeneous networks. There needs for mobile node and Serving to have a common recognition of which handover initiation strategy is utilized on that network.

2. 21-07-0423-01-0000 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 and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/guide.html> Section 6.3 of the IEEE-SA Standards Board Operations Manualhttp://standards.ieee.org/guides/opman/sect6.html#6.3 http://standards.ieee.org/board/pat/guide.html 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 stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6 http://standards.ieee.org/board/pat/faq.pdf

3. 21-07-0423-01-0000 MIH Handover Initiation Strategy Remote MIHFs perform MIH handover procedures to support target network selection among heterogeneous networks. Mobile Node or Serving PoS can initiate MIH Handover.

4. 21-07-0423-01-0000 MIH handover initiation strategy Mobile-initiated procedure Network-initiated procedure Handover Initiator Handover Responder Handover Initiator Handover Responder

5. 21-07-0423-01-0000 Consideration There are handover Initiator and Responder according to which role it needs to take on. Handover Initiator Needs to detect whether heterogeneous handover is required. Needs to initiate handover by sending MIH initiation message to the Handover Responder Handover Responder Needs to respond appropriately to the Handover Initiator’s request. Mobile-initiated case MN acts as Handover Initiator and Serving PoS acts as Handover Responder Network-initiated case Serving PoS acts as Handover Initiator and MN acts as Handover Responder

6. 21-07-0423-01-0000 Problem Statement MN and Serving PoS need to recognize which roles they can take on. Currently, the MN and Serving PoS do not know which action it should perform even though the link is going down… If all MN and Serving PoS try to act as a Handover Initiator or Handover Responder, what would happen? There needs a way for MN and Serving PoS to recognize which MIH Handover Initiation Strategy is utilized on that network thus enabling them to perform right roles according to that strategy.

7. 21-07-0423-01-0000 Proposal Apply the appropriate amendments by reflecting the remedies specified in the 21-07-0423-01-0000- MIH_Initiation_Strategy.doc.