Sensor Media Access Control(S-MAC) is a network protocol for sensor networks. Sensor networks consist of tiny, wirelessly communicating computers (sensor nodes), which are deployed in large numbers in an area to network independently and as long as monitor their surroundings in group work with sensors, to their energy reserves are depleted. A special form of ad hoc network, they make entirely different demands on a network protocol (for example, the Internet) and therefore require specially for them developed network protocols. Sensor Media Access Control specifies in detail how the nodes of a sensor network exchange data, controls the Media Access Control (MAC) to access the shared communication medium of the network, regulates the structure of the network topology, and provides a method for synchronizing.
Although today primarily of academic interest, S-MAC was a significant step in sensor network research and inspired many subsequent network protocols. It was introduced in 2001 by Wei Ye, John Heidemann and Deborah Estrin of the University of Southern California and was intended to conserve scarce, non-rechargeable energy resources of sensor nodes.[1] The development was supported financially by the US military agency DARPA under the project Sensor Information Technology (Sensit).
L-MAC (Lightweight MAC) is an energy-efficient medium acces protocol designed for wireless sensor networks. Although the protocol uses TDMA to give nodes in the WSN the opportunity to communicate collision-free, the network is self-organizing in. An Energy-Efficient MAC Protocol for Wireless Sensor Networks (ps) (also in pdf) Wei Ye, John Heidemann and Deborah Estrin In Proceedings of the 21st International Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM 2002), New York, NY, USA, June, 2002. Medium Access Control (MAC) protocols that have been designed for typical ad hoc networks have primarily focused on optimizing fairness and throughput efficiency, with less emphasis on energy conservation. However, the energy constraint is typically considered paramount for wireless sensor networks, and so many MAC protocols have recently been. Energy-efficient MAC protocols for wireless sensor networks and provide a fair comparison based on certain metrics Index Terms Energy Model in WSN, MAC protocols, Sensor Nodes.
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Wireless Sensor Network Definition
- ^Ye, Wei; Heidemann, J.; Estrin, D. (2002). An energy-efficient MAC protocol for wireless sensor networks. INFOCOM 2002. Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies. Proceedings. IEEE. 3. pp. 1567–1576. CiteSeerX10.1.1.16.1535. doi:10.1109/INFCOM.2002.1019408. ISBN978-0-7803-7476-8.
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