IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-10-0126-00-srho Title: PMIPv6 procedure for Optimized Single Radio Handover of WiMAX Forum Date Submitted: July 1, 2010 Presented at IEEE 802.21 Authors or Source(s): Yoon-Young An, Junghoon Jee, Hongseok Jeon, Changmin Park, Byungjun Ahn (ETRI) Abstract: This presentation provides PMIPv6 procedures for single radio handover between WiFi and WiMAX networks

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Overview of a SRHO in WMF Phase 1 SR Target Network Detection SFF Discovery Phase SR MS state : Null Phase 2 SR Session Pre-Registration HO Preparation SR MS state : Null Pseudo Active Phase 3 SR HO Action SR MS state : Pseudo Active  Active or Pseudo Active  Pseudo Idle  Active Note: Refer to DCN 21-10-0068-00-0000 and clarification is marked as blue

PMIPv6 Procedure of SRHO SRHO for WiFi Network to WiMAX Network PMIPv6 signaling is added to phase 2 and phase 3 Active mode HO Preparation Procedure Pseudo Active  Active Assumption Pre-registered ASN-GW includes Authenticator Target ASN-GW is different from the pre-registered ASN

PMIPv6 Procedure in Phase-2 : SR HO Session Pre-Registration MS Target ASN-GW (MAG) Pre-registered ASN-GW(MAG) /Authenticator AP/AR (MAG) IP Core Network WiMAX SFF Target BS LMA/HA AAA WiFi WiMAX Data IKEv2 procedure to setup a secure tunnel secure tunnel WIMAX SFF starts to perform BS operation DCD/UCD & BSID Initial Network Entry Procedure (stage3 4.5.1.1) MS-to-Network EAP authentication process MS 802.16e Registration process Connections Establishment Data Path Establishment AAA query with MS ID AAA reply with profile(HNP) RA(with HNP) IP Address Configuration for WiMAX Interface

PMIPv6 Procedure in Phase-2: Active mode SRHO Preparation MS Target ASN-GW (MAG) Pre-registered ASN-GW(MAG) /Authenticator AP/AR (MAG) WiMAX SFF IP Core Network Target BS LMA AAA WiFi WiMAX Data Active mode HO Preparation Procedure • MS-Initiated SRHO Preparation (Refer stage3 4.7.2.1.2) MOB_MSHO_Req HO_Req HO_Req Context retrieve DP Pre-Reg This message have target BS’s information HO_Rsp HO_Rsp MOB_BSHO_Rsp HO_Ack HO_Ack OR HO_Req This message includes one or more potential target BS’s HO_Req • Network-Initiated SRHO Preparation (Refer stage3 4.7.2.1.5) Context retrieve DP Pre-Reg HO_Rsp HO_Rsp MOB_BSHO_Req HO_Ack HO_Ack MOB_MSHO_Ind HO_Cnf • Refer stage3 4.7.2.2.2 HO_Cnf This message initiates a handover to one of the target BSs HO_Ack HO_Ack

PMIPv6 Procedure in Phase-3 : SR Handover Action MN Target ASN-GW (MAG) Pre-registered ASN-GW(MAG) /Authenticator AP/AR (MAG) IP Core Network WiMAX SFF Target BS LMA AAA WiFi WiMAX Network ReEntry Anchor_DPF_HO_Trigger • Successful HO Action Phase Anchor_DPF_HO_Req Anchor_DPF_Relocate_Req Anchor_DPF_Relocate_Rsp HO Latency in SRHO PBU Access-Request/MAR Access-Accept/MAA PBA Bi-Dir tunnel Anchor_DPF_HO_Rsp Anchor_DPF_Relocate_Ack Context_Rpt(Anchor ASN GW ID) Context_Ack IPv6 session Continuation Data

Key Issues Address Configuration for target WiMAX radio interface Data path update from WiFi network to WiMAX network Minimizing the packet loss