1. 1 IEEE 802.21 MEDIA INDEPENDENT HANDOVER DCN: 21-10-0221-00-srho Title: Inter-RAT ND&S Standardization Status Presented at IEEE 802.21 session #41 in Dallas Authors or Source(s): Junghoon Jee (ETRI) Abstract: This contribution summarizes the ND&S standardization efforts so far (3GPP, WiMAX, 802.16e/m) to help the future planning of the group. 121-10-0221-00-srho

2. 22 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 IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs 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 stated in Section 6 of the IEEE-SA Standards Board bylaws and in Understanding Patent Issues During IEEE Standards Development http://standards.ieee.org/board/pat/faq.pdf> Section 6 of the IEEE-SA Standards Board bylawshttp://standards.ieee.org/guides/bylaws/sect6-7.html#6http://standards.ieee.org/board/pat/faq.pdf 21-10-0221-00-srho

3. Overall Inter-RAT Handover Steps Network Discovery Available Networks Intersystem Mobility Policy Inter-RAT Measurement SIBs acquisition for other RATs Measurement configuration and report Handover Execution May perform pre- registration Packet rerouting 21-10-0221-00-srho3

4. 3GPP Optimized Single Radio Handover for 3GPP2 Dual-Radio Handover for WiMAX 21-10-0221-00-srho4

5. 3GPP Tight coupling for 3GPP2 networks 3GPP eNBs transfer SIBs of 3GPP2 using RRC messages for measurement configuration ANDSF Utilizes OMA Device Management (DM) protocol for communication with UEs Mobility Policy and Discovery Information Intersystem mobility policy priorities the access network Discovery Information provide further information for the UE to access the access network defined in the policy WiMAX Network Discovery and Selection (WNDS) MO FrequencyInfo, NAP-I, CellType, OperatorDifferentiatedTextField FrequencyInfo: FirstFreq, LastFreq, NextFreqStep, ChannelBandwidth, DuplexMode, FFT_Size, Preambles 21-10-0221-00-srho5

6. WiMAX NWG WiMAX-3GPP EPC IWK Currently active for 3GPP Rel9-PCC WiFi- WiMAX IWK ND&S is enabled by 802.21 Information Service Bi-directional between WiFi and WiMAX Non- WiMAX to WiMAX Handover SRHO Optimization (Pseudo Modes) Focus on handovers toward WiMAX 21-10-0221-00-srho6

7. WiMAX TWG 21-10-0221-00-srho7 802.16-2009 - Recent IoPR for Direct Inter RAT Advertising (withdrawn) 802.16m - On-going decision for profiling. Inter-RAT HO support using other RAT's message using L2 transfer message. Inter-RAT HO support using the MIH frame (802.21)

8. MIH support in 802.16 Distinctive MIH MAC container PKM, SII-Adv for MIH query and response 802.16- 2009 Generic L2- Xfer: MIH type, ORAT type PKM, SII-Adv for MIH query and response 802.16m 21-10-0221-00-srho8

9. Discussion Strength Uniform container for various IWK cases Both L3 and L2 support Cross-layer optimization Dynamic information exchanges: CS, ES Weakness. Mobility Policy (out of scope) 21-10-0221-00-srho9