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Performance Analysis of a Dynamic Priority Scheduling Method in D2D Networks

In this paper, we consider a queueing model for the performance study of D2D underlay cellular network. We develop a multi-priority business model with finite buffers and priority jumps. In the considered system, priority jump strategy is set for providing transmission chance to LP data and lower dropping probability of LP queue. In addition, to show the influence of cellular users to D2D links, the probability of D2D received SINR above a certain threshold is set as success transmission probability. Then, we employ a two-dimensional Markov chain to describe queue model with priority jump for each D2D user pair. The queueing behavior is evaluated using QBD processes approach. Finally, the expressions of performance metrics are obtained and simulation results show the validity of the theoretical analysis. Moreover, the dropping probability with different jump probability are discussed by simulation analysis.