AdPS: Adaptive Priority Scheduling for Data Services in Heterogeneous Vehicular Networks

摘要

Data service scheduling is paramount in realization of Intelligent Transportation System (ITS). ITS services recon upon real-time information sharing among vehicular network components. To provide real time information services in vehicular networks, numerous challenges are imposed due to unique characteristics of such networks. For efficient information dissemination, there is a prime requirement of an adaptive scheduling algorithm for approximate vehicular dynamics information. In this work, a Dedicated Short Range Communication (DSRC) based vehicular communication model has been used for efficient data services in heterogeneous traffic environment. A novel Adaptive Priority data Service scheduling (AdPS) algorithm has been proposed to provide real-time data services, which is based on fuzzy logic request deadline estimation and request prioritization. The prioritized requests has been stored in multilevel queues according to the urgency of requests to provide simultaneous access. The proposed algorithm has been simulated for different traffic scenarios for a real city environment and its performance has been analyzed at different traffic instances. The proposed protocol ensures the real time service scheduling which provides fairness among the users.