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With increasingly popular wireless and low-power sensors/devices, broadcast is one of essential operations to enhance information accessibility and availability. Due to the lack of centralized coordination and limited resources, however, designing an efficient broadcast protocol is challenging in Wireless Sensor Networks (WSNs). Although on-board Global Positioning System (GPS) based broadcast protocols...
DV-Hop algorithm is one of the important range-free localization algorithms. Three improved methods are put forward in this paper to settle the larger location error of the classic DV-Hop localization algorithm. First, the average hop-size of each anchor node is calculated by adopting least squares method. Second, the distance between unknown nodes and anchor nodes is refined by means of the average...
In a sensor network, the nodes that have a packet loss rate greater than a given threshold are called lossy nodes. Lossy nodes adversely affect network performance and collectively cause breakdown of network service in many cases. In this paper, we propose a new and simple approach to identify the lossy nodes from passive end-to-end measurements. Specifically, we consider the case of identifying lossy...
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