International Journal of Computer and Information Technology (IJCIT)
The fast-developing services in Internet pose challenges to the efficient transmission of various types of data, so an effective packet scheduling scheme is needed to meet the QoS constraints of heterogeneous services. In this paper, the priority-queuing model is used to study the performances of various strategies based on delay sensitivity and packets length. And the non-preemptive short-packet-first strategy is proved to result in the minimal overall delay. With different strategies for delay-sensitive and non-delay-sensitive services, an optimal priority-queuing model for the scheduling of multiple Internet services is designed based on above conclusions.