Conference Paper

A Transmission Power Control MAC Protocol for Wireless Sensor Networks.

DOI: 10.1109/ICN.2007.12 Conference: Sixth International Conference on Networking (ICN 2007), 22-28 April 2007, Sainte-Luce, Martinique, France
Source: DBLP

ABSTRACT Wireless sensor networks have been widely used in many important fields. Medium Access Control (MAC) protocols have a significant effect on the function and performance of sensor networks. At present, most MAC protocols use the same transmission power when sensor nodes send packets. However, the deployment of the sensor nodes is asymmetrical in wireless sensor networks, which will bring more energy consumption and unnecessary collisions. By jointing the MAC layer and physical layer of the senor nodes, and based on Sensor MAC (SMAC) [1] protocol, we propose a transmission power control MAC protocol in wireless sensor networks (transmission Power control in SMAC, PSMAQ. The simulation results show that, compared with the SMAC protocol, our protocol has improved a lot in the delay of packets, reception rate, energy consumption and throughput of the networks.

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    ABSTRACT: Wireless sensor networks have been developed in the way of higher speed, more stability, and more energy efficiency in recent years. Because most wireless sensors are powered by energy-constrained batteries, efficient energy consumption plays the most important role in the design of wireless sensor networks. For energy efficiency, aside from economizing the use of power in the sensor hardware, extensive research efforts have been dedicated towards designing energy-efficient protocols in the MAC layer. Among them, the S-MAC (sensor medium access control) protocol proposed a combined scheduling and contention scheme to decide when to put sensors into the sleep state for saving energy. In this paper, we further conduct the performance analysis of S-MAC protocol, in which the mathematical equations for the saturation throughput analysis of S-MAC protocol are derived, and then simulation data are substituted into those equations and the S-MAC protocol, respectively. The simulated throughput results have shown that our derived equations can capture the characteristics of the S-MAC protocol. In addition, as compared with the conventional carrier sense multiple access/collision avoidance protocol, the simulation results show that the S-MAC protocol performs better in terms of power consumption, delay, and collision rate. Copyright © 2013 John Wiley & Sons, Ltd.
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    ABSTRACT: To design energy efficient Medium Access Control (MAC) protocol for maximizing the network lifetime in Wireless Sensor Network (WSN), is evolving as a challenging portal in research area. The overall radio energy inherently depends on network workload as well as the radio characteristics. Therefore, we have proposed a Dynamic Power Control MAC (DPCMAC) protocol which supports variable power level transmission of packets according to data rate of sources. Our novel approach minimizes the aggregate energy consumption in all power states according to the network traffic. Moreover in our protocol, we calculate the desired power level for the transmission of packets for two types of scenarios: low and high network workload. The protocol is simulated for the variable size of networks and its performance is analyzed on the basis of success rate and energy consumption. The simulation results show that our protocol outperforms the existing Sensor MAC (SMAC) protocol.
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    ABSTRACT: Wireless sensor networks (WSN) have been used in many important fields such as target detection and tracking, environmental monitoring, industrial process monitoring and tactical systems. As nodes in wireless sensor networks typically operate unattended with a limited power source, energy efficient operations of the nodes are very important. Although energy conservation in communication can be performed at different layers of the TCP/IP protocol suite, energy conservation at MAC layer is found to be the most effective one due to its ability to control the radio directly. Therefore, to ensure a long-lived network of wireless communicating sensors, we are in need of a MAC protocol that is able to improve energy efficiency by maximizing sleep duration, minimizing idle listening and overhearing, and eliminating hidden terminal problem or collision of packets. In this paper, we investigated the available energy-efficient MAC protocols for wireless sensor networks and provide a fair comparison based on certain metrics.
    International Journal of Scientific and Engineering Research 05/2013; 4(5):1859-1879. · 3.20 Impact Factor

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