Mobility Management for Multicast Sessions In a UMTS-IP Converged Environment Leoleis, G.; Dimopoulou, L.; Nikas, V.; Venieris, I.S. ISCC 2004. Advisor: Yuh-Shyan Chen Student: Kau-Lin Chiu Date: March 8, 2006

Outline Introduction MBMS Service Description UMTS Extensions for MBMS MBMS Support in Converged UMTS-IP Environment Conclusions

Introduction Multicasting appears as a straightforward solution to facilitate one- or many-to-many delivery of packet switched service. In B3G network, the UMTS core network are replaced by pure IP mobility and multicast functionality

Multimedia Broadcast/Multicast Service MBMS is defined as a network layer UMTS service that adopts a unidirectional (downstream) point-to-multipoint data delivery mechanism. The Broadcast-Multicast Service Center (BM-SC) Control information flows exchanged with 3PP of MBMS data Manage AAA information associated with third parties

MBMS Service Description- Network Architecture

MBMS Service Subscription Service Announcement Joining - Bearer Activation Session Start Notification Data Transfer Session Stop Leaving - Bearer Deactivation

MBMS Contexts Standby No resource allocation Active Resource reservation and transfer

UMTS Extensions for MBMS-- Idle Mode RAI 1 RAI 2 RAI 3 RAI 4 RA 1 RA 2 RA 3 RA 4 LA RA URA RA: Routing Area RAI: Routing Area Identifier RAU: Routing Area Update PA

Relocation Procedure

UMTS Extensions for MBMS-- Connected Mode Register De-Register

MBMS Support in Converged UMTS-IP Environment The UMTS CN towards a fully IP-based mobile-aware network, a hybrid mobility management model based on both UMTS and Mobile IPv6 (MIPv6) mechanisms is proposed.

Target Network Architecture RASH: executing MIP function and traditional PS service Hide radio access technologies Terminate the access stratum and the non-access stratum

RASN Relocation

Conclusions this paper has described the principles of the multicast mode MBMS architectural. Inter-RASN mobility to multicast sessions is provided through the specified RNS relocation procedure enhanced with the establishment of a short time tunnel for preventing packet loss.