A scheme for using closest rendezvous points and Mobile Elements for data gathering in wireless sensor networks

A variety of wireless sensor network (WSN) applications have been proposed. However, the efficiency of WSNs, as well as their ability to interact with different environments, varies. Many challenges and problems to be solved remain. Overcoming these challenges requires a protocol that will design and provide a highly efficient system, thus helping the WSN to transmit data in a suitable time. In WSNs with Mobile Elements (MEs), the task is first to find an effective way to minimize the length of the tour that the ME follows for data gathering. However, the minimized tour length should still offer access to all nodes in the networks for data collection form the sensor nodes. In this paper, we propose a protocol that results in a shorter ME tour length than previously proposed protocols, using closest rendezvous points (CRPs) distributed throughout the network. Furthermore, this proposed protocol offers access to all nodes inside the network for the exchange of data with the MEs, as facilitated by the suggested CRP algorithm. One or more nodes can be represented by a single CRP that provides connectivity to all of the nodes within its wireless range. In cases where a greater number of MEs are used, less time is required to traverse the network for data gathering. This research demonstrates that the tour time can be reduced significantly by using more than one ME.