1. 21-05-0534-00-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-05-0534-00-0000 Title: Amendment-for-Link_Handover_Complete.Indication- primitive Date Submitted: February, 9, 2006 Presented at IEEE 802.21 session #13 in Denver Authors or Source(s): Shu Guiming,Zhong hui Abstract: Now we gave a amendment about Link_Handover_ Complete.Indication and MIH_Switch.response primitive by adding several parameters indicating link layer switch/handover complete result,so that upper layer can use this information and make decision for next action.

2. 21-05-0534-00-0000 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. 21-05-0534-00-0000 Background According to proposal 21-05-0427-01-0000-MIH-Link-events and current P802-21-D00-05 draft, Link_Handover_Imminent.Indication informs upper layer that a link layer handover/switching decision has been made and its execution is imminent and Link_Handover_Complete.Indication informs upper layer that a link layer handover/switch execution has just been completed. Link layer handover/switching is a part of existing native link behaviors defined by many media types (e.g., cellular, 802.16). Link layer handover/switching decision is made and executed autonomously. Once a handover/switch begin,the complete result will be successful or unsuccessful. The upper layer need to know such different result as successful or unsuccessful and make different decision for next action.

4. 21-05-0534-00-0000 Proposal[1] Now we have a proposal for adding two integer parameter “ResultCode” indicating the handover/switch complete result and “HandoverFailCode” indicating the unsuccessful reason in Link_Handover_ Complete.Indication primitives. By these parameter MIH layer can know whether the link layer handover/switch successful or not and response these handover result information to upper layer.

5. 21-05-0534-00-0000 New parameter defined in Link_Handover_Complete.Indication 7.3.17 Link_Handover_Complete.Indication 7.3.17.1 Function Link Handover Complete event is generated…….……………………………………………………... and pass them to upper layer as MIH events. Event Type:Link Synchronous Parameters: NameTypeValid Range Description MacMobileTerminalMAC AddressMAC Address of Mobile Terminal MACNewPoAMAC AddressMAC Address of New AP/BS MacOldAccessRouterMAC AddressMAC Address of old Access Router (if any) MacNewAccessRouterMAC AddressMAC Address of new Access Router (if any) ResultCodeIntegerSuccess;Failure; Rejected Result of trying to switch the link HandoverFailCodeInteger0-255Code for unsuccessful reason 0: Time out. 1:absence of resource 3 : Signal power too lower. 2-255: TBD

6. 21-05-0534-00-0000 Proposal[2] By adding a boolean parameter “HandoverCompleteResult” and an integer parameter “HandoverFailCode” in Link_ Handover_ Complete.Indication primitives, MIH layer can know whether the link layer handover/switch successful or not and the unsuccessful reason.. In order to transfer aforementioned handover/switch result information to upper layer,we have another proposal about adding an integer parameter “HandoverFailCode” indicating the unsuccessful reason in MIH_Switch. response primitive,so that the upper layer can use this information making decision for next action.

7. 21-05-0534-00-0000 New parameter defined in MIH_Switch.response primitive 7.4.7.2.2 Semantics of the service primitive The parameters of the primitive are as follows: MIH_Switch.response ( SourceIdentifier, DestinationIdentifier, ResultCode HandoverFailCode) NameTypeValid Range Description Source IdentifierIdentifierAny valid individual or group identifier The identifier of entity where the request is initiated. This field may be optionally left empty if the command is local. Destination IdentifierIdentifierMIH_LOCAL, MIH_REMOTE The destination identifier of request or response. This is the identifier of local or peer MIH Function. ResultCodeSuccess; Failure; Rejected Result of trying to switch the link HandoverFailCodeInteger0-255Code for unsuccessful reason 0: Time out. 1:absence of resource 3 : Signal power too lower. 2-255: TBD

8. 21-05-0534-00-0000 END