1. 1 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 Media Independent Handover Use Cases and Architecture Discussion Stimulus Michael Glenn Williams, NOKIA

2. 2 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 Media Independent Handover Use Case 1 David has a multi-radio device. He connects to his Intranet via IEEE 802.11g. He leaves his office and crosses the campus to another building. In between buildings there is Intranet coverage via IEEE 802.16. D

3. 3 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 Media Independent Handover Use Case 2 David has a multi-radio device. He connects to his Intranet via IEEE 802.11g. He leaves from his office and continues his session via GPRS. D

4. 4 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 Media Independent Handover Use Case 3 David has a single radio device. He connects to the Internet via a hotel public hotspot IEEE 802.11g in his room. He walks to the conference which has a different ESS and continues his session. D

5. 5 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 Media Independent Handover Use Case 4 David is unassociated. He is walking in the airport and there are a variety of SSIDs visible. Which network should he pick? D

6. 6 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 MIH System Architecture Discussion Illustration DB MAC L2.5 IP UDP.3 router.16 BS.11 AP Link service only, or network service too?.11 &.16 MN 802.21 service (agent? ) TGk TGe FR 802.21 Terminal produced 802.21 ?? 802.21 ?? 802.21

7. 7 SysArchUseCase.PPT/ Jan 2004 / rev2 IEEE 802.21 MIH payload brainstorming Packet ideas L2 scope Transport MAC hdr MIH headerMIH payload MAC MIH hdr MIH payload Transport MAC hdr IP headerMIH payload Transport MAC hdr IP headerUDP headerMIH payload Packet ideas L3 scope (routable)