IEEE MEDIA INDEPENDENT HANDOVER DCN: Title: Handover Flow Diagrams Update Date Submitted: May 14, 2007 Presented at IEEE session in Montreal, QC, Canada Authors or Source(s): Junghoon Jee

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Overview IEEE P802.21/D05.00 specifies handover procedures in the Annex A. A.1 Mobile-initiated handover procedure A.2 Network-initiated handover procedure A.3 Network-initiated handover from to 3G (Single PoS) A.4 Handover from 3G to WLAN A.5 Example handover flow chart between and A.6 Example handover flow charts for Mobile IP A.7 Handover flow diagram for abnormal cases

Problems Statement Protocol message naming inconsistency with the normative part. Use of obsolete MIH_Switch. Different assumption about the relationship MIH primitive and lower layer connection setup or higher layer execution. Relationship between MIH_Net(MN)_HO_Commit and L2 connection setup. Relationship between MIH_MIH_MN_HO_Complete and higher layer handover execution. Related contributions HO_SignallingDiagrams (A2, A3, A4.1, A4.2) Optimization about A.4.1 and A.4.2 (A4.1, A4.2)

Resolution Guideline Follow the protocol name as defined in the normative section. With the form of MIH_Net_HO_Candidate_Query “Request” Four Steps Step 1. Resource Availability Check MIH_(MN)Net_HO_Candiate_Query MIH_N2N_HO_Candidate_Query Step 2. Resource Preparation MIH_N2N_HO_Commit Step 3. Handover Commitment MIH_(MN)Net_HO_Commit MIH_Configure_Link Step 4. Resource Release MIH_MN_HO_Complete MIH_N2N_HO_Complete

Mobile-initiated case

Network-initiated case

Working Status Contributors Juan-Carlos Zuniga Yoshihiro Ohba Junxiang Guo Junghoon Jee Amendment role A.1 and A.2 : Junghoon Jee by updating A.3 and A.4 : Juan-Carlos by updating A.4 – A.7 : Junxiang Guo