Abstract: Scheduling different types of packets, such as real-time and non-real-time data packets, at sensor nodes with resource constraints in Wireless Sensor Networks (WSN) is of vital importance to reduce sensors energy consumptions and end-to-end data transmission delays. The main objective of packet scheduling scheme in wireless sensor network is to minimize the average end to end delay and waiting time of all real-time data packets and also non-real time data packets. Due to the minimization of these factors, we can get the minimum energy consumption. Then, the life time of battery will be increased. So here we were considering these factors for multiple levels and multiple zones. Scheduling different types of packets, such as real-time and non-real-time data packets, at sensor nodes with resource constraints in Wireless Sensor Networks is of vital importance to reduce sensors’ energy consumptions and end-to-end data transmission delays.

Keywords: Wireless sensor network, packet scheduling, preemptive priority scheduling, non-preemptive priority scheduling, Dynamic Multilevel Priority scheduling, real-time, non-real-time, data waiting time, FCFS.