01412nas a2200157   4500008004100000245006700041210006400108300001500172520087000187653000901057653000901066100002101075700002201096700002601118856011001144       2008                        eng d00aAn Efficient Mechanism for Multicast Data Transmission in UMTS0 aEfficient Mechanism for Multicast Data Transmission in UMTS  a 455 - 4713 aIn this paper, we present an efficient scheme for the multicast transmission of the data in the Universal Mobile Telecommunications System (UMTS). We take advantage of the tree topology of the examined network and we introduce the use of Routing Lists (RLs) in the nodes of the UMTS. The adoption of these lists leads to the decrement of the transmitted packets and to the efficient use of network resources in the multicast transmission of the data. We describe in detail the appropriate steps for the successful multicast transfer of data. Furthermore, we analyze the handling of special cases such as user mobility scenarios. Especially, the various handover types are examined along with the Serving Radio Network Subsystem relocation procedure. Finally, we implement our approach in the NS-2 simulator and we present the performance of the multicast mechanism.10aMBMS10aUMTS1 aBouras, Christos1 aAlexiou, Antonios1 aAntonellis, Dimitrios  uhttp://telematics.upatras.gr/telematics/publications/efficient-mechanism-multicast-data-transmission-umts