1. 21-06-0xxx-00-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-06-xxxx-00-0000 Title: Handover Procedure – Redraw of Annex Figure Date Submitted: October 22, 2006 Presented at IEEE 802.21 session in Dallas Authors or Source(s): Jing Liu, Yan Peng Abstract: This document includes the redrawn figure of A1.4.1, A1.4.2, A1.1 and A1.2 according to the new template.

2. 21-06-0xxx-00-0000 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

3. 21-06-0xxx-00-0000 A1.4.1

4. 21-06-0xxx-00-0000 A1.4.2

5. 21-06-0xxx-00-0000 A1.1

6. 21-06-0xxx-00-0000 A1.2

7. 21-06-0xxx-00-0000 Some Minor Modification Because not all the entities would play the role (i.e. send or receive message) in every figure. To make the flow diagrams more readability, we only keep the entities which join the message exchange. For MIH_Handover_Initiate.response, the original AbortReason equal to 0, which means 'Abort Handover'. According to the context, we change it to 0: Initiate Handover. Add a step "Perform the method to avoid data losing" to reflect the 7.4.12.3.4 "Upon receipt, the old Serving PoS may start forwarding any pending or remaing packets to the new Target PoS. "