Impact of Multilevel Hierarchies on Performance of Wireless Peer-to-Peer Group Communication

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Executive Summary

Multimedia group communication services in mobile networks as a replacement for traditional trunked radio communication have attracted a lot of attention recently. This paper presents results from a newly developed group communication simulation model to study the transfer of multimedia streams in group communication systems within different system setups. As the real time ability of such a system has been identified as the key success feature, the focus of the presented studies is placed on the variation of the users' upload data rate, the resulting overlay network structure and its impact on the overall transfer delay.

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