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University: Athens University of Economics and Business
Name of sponsoring Professor: George Xylomenos
Department: Department of Informatics, Mobile Multimedia Laboratory

Research:

B-BONE Broadcasting & Multicasting over Enhanced UMTS Mobile Broadband Networks)

European Union 6th Framework Programme, Information Society Technologies (IST), 2004-2006.

The IST B-Bone project evaluated extensions to existing broadcast and multicast mechanisms in UMTS networks from the physical layer to the network layer. As part of this study, a complete MBMS simulator, also incorporating the B-Bone extensions, was built using Opnet Modeller. The AUEB team was involved with the study of network layer mechanisms (CN and RAN) for multicast and broadcast, such as signalling, group management and content adaptation.

In particular, the AUEB team participated in the implementation of MBMS for the CN nodes (BM-SC, GGSN and SGSN) and protocols (GTP), by extending existing Opnet Modeller code with MBMS support. We also designed and implemented in Opnet Modeller a Multiple Content Variant (MCV) extension to MBMS that distributes different variants of the same content to each UE, depending on terminal limitations and/or user preferences. The performance improvements due to MBMS as well as the additional improvements due to MCV were studied and analyzed via extensive simulation experiments performed in Opnet Modeller.

Authored papers:

  • Reducing the Transmission Power Requirements of the Multimedia Broadcast/Multicast Service, George Xylomenos, Vasilis Tsakanikas and George C. Polyzos, Proceedings of the IST Mobile & Wireless Communications Summit 2007.

    • Portable Document Format.

  • A Multiple Content Variant Extension of the Multimedia Broadcast/Multicast Service, George Xylomenos and Konstantinos Katsaros, Proceedings of the IST Mobile & Wireless Communications Summit 2006.

    • Portable Document Format.

  • Supporting Multiple Content Variants in the Multimedia Broadcast/Multicast Service, George Xylomenos and Konstantinos Katsaros, Proceedings of the World Telecommunications Congress (WTC) 2006. Portable Document Format.

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