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IEEE 802.21 MEDIA INDEPENDENT HANDOVERDCN: 21-07-0205-02-0000

Title: Handover Flow Diagrams UpdateDate Submitted: May 14, 2007Presented at IEEE 802.21 session in Montreal, QC, CanadaAuthors or Source(s): Junghoon Jee

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IEEE 802.21 presentation release statements• This document has been prepared to assist the IEEE 802.21 Working Group.

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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 802.16 to 3G (Single

PoS)• A.4 Handover from 3G to WLAN• A.5 Example handover flow chart between 802.11 and

802.16• A.6 Example handover flow charts for Mobile IP• A.7 Handover flow diagram for abnormal cases

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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

• 21-07-0110-01-0000-HO_SignallingDiagrams (A2, A3, A4.1, A4.2)

• 21-07-0181-00-0000-Optimization about A.4.1 and A.4.2 (A4.1, A4.2)

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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

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Mobile-initiated caseMobile Node

MIHFServingMIHF

MIH_MN_HO_Candidate_Query Request

TargetMIHF

MIH_MN_HO_Candidate_Query Response

MIH_N2N_HO_Query_Resources Request

MIH_N2N_HO_Query_Resources Response

MIH_N2N_HO_Commit Response

Target Decision

MIH_N2N_HO_Query_Resources Request

MIH_N2N_HO_Query_Resources Response

MIH_N2N_HO_Commit RequestMIH_MN_HO_Commit Request

Layer 2 connection establishment

Higher layer handover execution

MIH_MN_HO_Commit Response

S2: Resource Preparation

S3: Handover Commitment

S4: Resource Release

MIH_N2N_HO_Complete Request

MIH_N2N_HO_Complete Response

MIH_MN_HO_Complete Request

MIH_MN_HO_Complete Response

S1: Resource Availability Check

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Network-initiated caseMobile Node

MIHFServingMIHF

MIH_Net_HO_Candidate_Query Request

TargetMIHF

MIH_Net_HO_Candidate_Query Response

MIH_N2N_HO_Query_Resources Request

MIH_N2N_HO_Query_Resources Response

MIH_N2N_HO_Commit Response

Target Decision

MIH_N2N_HO_Query_Resources Request

MIH_N2N_HO_Query_Resources Response

MIH_N2N_HO_Commit Request

MIH_Net_HO_Commit Request

Layer 2 connection establishment

Higher layer handover execution

MIH_Net_HO_Commit Response

S1: Resource Availability Check

S2: Resource Preparation

S3: Handover Commitment

S4: Resource ReleaseMIH_N2N_HO_Complete Request

MIH_N2N_HO_Complete Response

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Working Status• Contributors

• Juan-Carlos Zuniga• Yoshihiro Ohba• Junxiang Guo• Junghoon Jee

• Amendment role• A.1 and A.2 : Junghoon Jee by updating 21-07-0010• A.3 and A.4 : Juan-Carlos by updating 21-07-0110• A.4 – A.7 : Junxiang Guo