An Efficient Mechanism for UMTS Multicast Routing |
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Authors: | Antonios Alexiou Christos Bouras Andreas Papazois |
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Affiliation: | (1) Research Academic Computer Technology Institute, N. Kazantzaki, GR-26500 Patras, Greece;(2) Computer Engineering and Informatics Department, University of Patras, GR-26500 Patras, Greece |
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Abstract: | In this paper, we present a novel scheme for the multicast transmission of data over Universal Mobile Telecommunications System
(UMTS) networks. Apart from the normal multicast transmission over UMTS, we consider the handling of exceptional cases caused
by user mobility scenarios. The proposed scheme is in accordance with the current specifications of the Multimedia Multicast/Broadcast
Service (MBMS) defined by the 3rd Generation Partnership Project (3GPP) and introduces minor modifications in the UMTS architecture
and the mobility management mechanisms. The proposed scheme is implemented as an ns-2 network simulator module. The performance
of the proposed scheme is validated and analyzed through ns-2 simulation experiments. This new module can be employed to investigate
various aspects of UMTS multicast. Furthermore, in order to further highlight the contribution of our mechanism, we have implemented
two multicast congestion control mechanisms for UMTS and we have measured their performance for MBMS transmissions. |
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