Abstract
The convergence of IP network over broadcasting transmission systems is a feasible solution towards the next generation wireless broadband multimedia network for large numbers of users and Internet service providers. Taking the characteristics of IP over broadcasting network into account, this paper proposes a novel Dynamic Differentiated Service Management (DDSM) to provide QoS guarantee for delivering IP applications on the IP-Broadcasting Gateway equipment. In the DDSM model, the queue threshold is regulated dynamically according to the level of emergency and priority; the scheduling weight derives from the queue saturation during a regulating period. As shown in the performance evaluation and simulation analysis, DDSM significantly improves the resource utility of the IP over broadcasting system, and reduces the packet drop probability and the packet delay. Thus DDSM achieves the effective differentiated service of the diverse IP applications over broadcasting network.
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