Sensor activation and radius adaptation (SARA) in heterogeneous sensor networks

Multiple Target Tracking in Wireless Sensor Networks Based on Sensor Grouping and Hybrid Iterative-Heuristic Optimization

A novel hybrid method for tracking multiple indistinguishable maneuvering targets using a wireless sensor network is introduced in this paper. The problem of tracking the location of targets is formulated as a Maximum Likelihood Estimation. We propose a hybrid optimization method, which consists of an iterative and a heuristic search method, for finding the location of targets simultaneously. T...

Reprogramming in Heterogeneous Sensor Networks

With advances in sensor networking technology, new applications involving remote and real-time data collection are becoming popular and becoming increasingly deployed. For applications that are deployed in remote locations or deployed at a large scale, over-the-air remote programming may be needed to update the application code executing on the sensor nodes. Deluge is a protocol that provides t...

Coverage Quality in Visual Sensor Networks

A novel key management scheme for heterogeneous sensor networks based on the position of nodes

Wireless sensor networks (WSNs) have many applications in the areas of commercial, military and environmental requirements. Regarding the deployment of low cost sensor nodes with restricted energy resources, these networks face a lot of security challenges. A basic approach for preparing a secure wireless communication in WSNs, is to propose an efficient cryptographic key management protocol be...

Energy Saving in Heterogeneous Wireless Sensor Networks

Abstract: In Wireless Sensor Network (WSN) the sensor nodes are very much sensitive to the energy consumption. The success of the wireless sensor network applications highly depends on the reliable communication among the sensor nodes. One of the major problems in WSN environments is the limitation of the physical resource that is energy resources. More energy is consumed in transmitting and re...