Rendezvous Point based Delay-efficient Trajectory Formation for Mobile Sink in Wireless Sensor Networks
Anjula Mehto, Shashikala Tapaswi, Kiran Kumar Pattanaik · 2019
Solutions for energy hole problem in wireless sensor networks (WSNs) have been excessively explored using mobile sink (MS). Although, MS provides a considerable amount of energy saving through direct data collection from the proximity of each sensor nodes (SNs). However, this situation raises the trajectory length and results into a long data acquisition latency. Therefore, it is a challenging task to form a delay-efficient trajectory of MS using an optimal number of sojourn locations known as rendezvous points (RPs). This paper introduces an RP-based delay-efficient trajectory formation method for MS to acquire data. In the proposed method, the intersection points of straight lines between two SNs are regarded as the probable positions of RPs. These probable positions are optimized using a greedy technique for delay-efficient data acquisition. The proposed method is simulated using NS-2 simulator and compared with the existing state-of-the-art in terms of the total number of RPs and data acquisition latency.