Abstract
Abstract Introducing cooperation into a wireless sensor network (WSN) has gained much attention in the recent few years mainly because of the significant effect it has on optimizing energy consumption and on enhancing the lifetime and the overall performance of the network. Cooperation can be exploited at different levels, ranging from a collection of nodes collaborating to forward the data they gathered from the environment towards the base station through efficient data aggregation and clustering techniques, to nodes collaborating to report events occurrences, track targets or control the topology. Motivated by a large variety of attractive wireless sensor applications, such as environmental monitoring, smart environments and healthcare applications, we survey mechanisms that take advantage of cooperation among sensor nodes in the network for the purpose of delivering information reliably and efficiently to nodes of the network that are interested in receiving it. We provide detailed overviews and highl...
Highlights
A wireless sensor network is a collection of a large number of small, self-powered and inexpensive devices organized into a cooperative network
We study several important performance properties of each approach and highlight the importance of cooperation among sensor nodes from different perspectives
We focus on applications in which each sensor continuously monitors a field of interest, and the base station is interested in getting every measurement from all the sensors, in order to determine the status of the observing field and make appropriate decisions
Summary
A wireless sensor network is a collection of a large number of small, self-powered and inexpensive devices organized into a cooperative network. The sensors in the network act as sources, which detect environmental events, such as fire, flooding, chemical leak or air condition change and push the sensed data to the appropriate sink.[1] wireless sensor networks have emerged as a new information-gathering (or eventdetecting) paradigm relying on the collective and cooperative effort of numerous sensor nodes. Each sensor in the network consumes power, in sensing data, and for processing the data and transmitting these processed information for further routing. We survey mechanisms which utilize nodes’ cooperation for data dissemination in a wireless sensor networks. We classify these mechanisms into four categories: 1°) mechanisms using cooperation for data gathering, 2°) mechanisms using cooperation for event detection and target tracking, 3°) mechanisms using cooperation for topology control and 4°) mechanisms using cooperation for prolonging the network lifetime.
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