1. 21-06-0499-00-0000 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-06-0499-00-0000 Title: Notify high layer when events change Date Submitted: Jan, 06, 2006 Presented at IEEE 802.21 session #12 in Hawaii Authors or Source(s): Jiang bingqiang,Zhuang hongcheng Abstract: This document proposes two methods to notify high layer when the list of supported link layer events changes.

2. 21-06-0499-00-0000 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. 21-06-0499-00-0000 Change of supported link layer events Devices such as hot-plugged interfaces or an external module may cause the list of supported link layer events to change in any time. Sometimes, it is very important to send the changed message to high layer automatically in time for deciding to initiate handover in real-time scenario.

4. 21-06-0499-00-0000 New Event Primitives 1 In section 7.3 Link Layer Primitives, add the following primitive: Link_Event_Capability.Indication: Function Automatically send the changed message of the list of supported link layer events to MIH layer. Semantics of service primitive The primitive parameters are as follows: Link_Event_Capability. Indication （ EventSource, SupportedEventList ）； NameTypeValid RangeDescription Event SourceLINK_EVENT_SOURCEN/AThe origination point from where list of supported events is changed. This can be used to report both local and remote events SupportedEvent ListSet of Event IDsN/AList of link layer events supported or changed by the link layer

5. 21-06-0499-00-0000 New Event Primitives 1(continue) LINK_EVENT_SOURCE is defined as follows. {Local Node, Remote Node}. Local and remote is referred with respect to destination. When generated When the list of supported link layer events is changed, the low layer would report this message to MIH layer by this primitive. Effect on receipt MIH layer will send this message to MIH users or take different actions on this notification.

6. 21-06-0499-00-0000 New Event Primitives 2 In section 7.4 MIH Primitives, add the following primitive: MIH_Capability. Indication Function Send the changed message of the list of supported link layer events to MIH users. Semantics of service primitive The primitive parameters are as follows: MIH_Capability. Indication （ EventSource, SupportedEventList, SupportedCommandList ）； NameTypeValid RangeDescription Event SourceLINK_EVENT _SOURCE N/AThe origination point from where list of supported events is changed. This can be used to report both local and remote events SupportedEvent ListFlagSet of supported eventsList of supported events. Refer to 8.4.1.2 SupportedCommandListFlagSet of supported commadns (optional) List of supported commands. Refer to 8.4.1.2

7. 21-06-0499-00-0000 New Event Primitives 2(continue) LINK_EVENT_SOURCE is defined as follows. {Local Node, Remote Node}. Local and remote is referred with respect to destination. When generated When MIH layer receives the Link_Event_Capability. Indication, MIH layer will send it to MIH users immediately. Effect on receipt MIH users will take different actions on this notification

8. 21-06-0499-00-0000 Usage scenario 1 The new primitive can be used to discovery the list of supported link layer events along with the existed primitive in 802.21 draft.

9. 21-06-0499-00-0000 Usage scenario 2 Only using the new primitive to discovery the list of supported link layer events, instead of the existed primitive in 802.21 draft, especially when MIHF initiates.