1. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Implementation of Explicit Multicast with Mobile IP in Mobile Environment 2003. 2. 27. 2003. 2. 27. J.W. PYUN, Prof. Y.J. PARK. J.W. PYUN, Prof. Y.J. PARK. (Hanyang University, Korea) (Hanyang University, Korea) Ph.D. W.T. Kim. Ph.D. W.T. Kim. (Rostic Technologies. Inc.) (Rostic Technologies. Inc.)

2. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Introduction Overview Explicit Multicast(Xcast) Mobile IPv4 concepts Xcast over Mobile IPv4 Implementation(HA+, FA+, MN+) Conclusion

3. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Overview Multicasting in Mobile IP - unicasting by tunneling - IGMP Using Xcast Adding Xcast function on Mobile IP software Experiment - Wireless LAN(IEEE 802.11b)

4. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Multicasting problem in Mobile IP Router Foreign Agent 1Foreign Agent 2 Home Agent Correspondent Node AP MN in Notebook

5. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University What is Xcast?(1) Xcast(Explicit Multicast) small group multicast (max. 127) SSM(Source-Specific Multicast) No, need for multicast routing protocol The source encodes the list of destinations in the Xcast header The Xcast packet can be converted into a normal unicast packet : called X2U (Xcast to Unicast)

6. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University What is Xcast?(2)

7. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Xcast Application Xcast Application IP Telephony(VoIP application) Video conferencing Real-time collaborative applications Networked games

8. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Mobile IPv4 Network Home Agent Foreign Agent

9. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Mobile IPv4 protocol Home Agent Foreign Agent

10. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Implementation Environment Dynamics - HUT Mobile IP system http://www.cs.hut.fi/Research/Dynamics/ developed at Helsinki University of Technology (HUT) Mobile IP software for Linux - Home Agent, Foreign Agent module for Linux Router - Dynamics Mobile Node is partially ported for Microsoft Windows (98SE, ME, NT4, 2000) Communication availability with Mobile IP in wireless LANs

11. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Implementation Environment(II) Router Foreign Agent 1Foreign Agent 2 Home Agent Linux Router 4, AP(Access Point) 2, Notebook with WLAN card Correspondent Node AP MN in Notebook

12. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Home Agent + Home Agent Main ICMP handler Advertisement message ARP processor Routing Table update Binding Info. Authentication module Registration Reply Registration Request X – tunnel Tunneling IP - IP X – parse Xcast module Mobile IP module

13. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Foreign Agent + Foreign Agent Main Solicitation Reply ARP processor ICMP handler Advertisement message Routing Table update Authentication module Registration Reply Registration Request X – tunnel Tunneling IP - IP X – parse bitmap Xcast module Mobile IP module

14. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Conclusion mobile multicasting for small group membership in Wireless LAN(IEEE 802.11b) with Xcastable Router embeded Xcast over Mobile IPv4 protocol Xcast dont need for multicast routing protocols Xcast only works with a limited number of receivers

15. Genkai/Hyeonhae Workshop in Fukuoka NCLAB, Hanyang University Reference IBM Explicit Multicast http://www-124.ibm.com/developerworks/oss/xcast/ Alcatel Explicit Multicast/Small Group Multicast http://www.alcatel.com/xcast/ Xcast over Mobile IP draft-lee-xcast-mobile-ip-00.txt Explicit Multicast(Xcast) Basic Specification draft-ooms-xcast-basic-spec-01.txt