Xiao-Min Zhu

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The explosive growth of 3G services seriously challenges the business and operating support systems of telecommunication operators, especially the processing capacity of charging and billing systems. One of the solutions to make service more efficient and smooth, is the support of scalable, reliable, and high-performance clustered server architecture. Based(More)
The emergence of new data services in 3G networks is driving the support of advanced content-based billing mechanisms whose unique characteristics require that the OCS (online charging system) provide relative differentiated services based on different contents. The OCS can be modeled by the PDD (proportional delay differentiation) structure and it aims to(More)
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