Energy efficient schemes for wireless sensor networks with multiple mobile base stations

Abstract

One of the main design issues for a sensor network is conservation of the energy available at each sensor node. We propose to deploy multiple, mobile base stations to prolong the lifetime of the sensor network. We split the lifetime of the sensor network into equal periods of time known as rounds. Base stations are relocated at the start of a round. Our method uses an integer linear program to determine new locations for the base stations and a flow-based routing protocol to ensure energy efficient routing during each round. We propose four metrics and evaluate our solution using these metrics. Based on the simulation results we show that employing multiple, mobile base stations in accordance with the solution given by our schemes would significantly increase the lifetime of the sensor network.

A Survey on Localization for Mobile Wireless Sensor Networks

“…Similarly, when network sinks are stationary, nodes closer to the base station will die sooner, because they must forward more data messages than those nodes further away. By using mobile base stations, this problem is eliminated, and the lifetime of the network is extended [19]. Mobility also enables greater channel capacity and maintains data integrity by creating multiple communication pathways, and reducing the number of hops messages must travel before reaching their destination [20].…”

“…Data routing and aggregation can incur significant overhead. Some MWSNs use mobile base stations [19], which traverse the sensing region to collect data, or …”

Energy-Efficient and Fault-Tolerant Positioning of Multiple Base Stations

“…Recently, there have been several studies on BS placement for energy efficiency. Gandham et al introduced the importance of energy efficient BS placement [1]. Vaas et al presented the idea of moving the BS of a sensor network, in order to decrease the amount of energy required for communication [2].…”

Performance measures of fuzzy C-means algorithm in wireless sensor networks

“…In the literature, several protocols have been proposed to show remarkable improvements in network life time by movement of the sink through optimum routing paths, and by devising optimum positioning of SNs in a geographical area (Gandham et al, 2003;Luo and Hubaux, 2005a;Papadimitriou and Georgiadis, 2005;Wang et al, 2005). Movement of the sink can follow different types of pattern in a given geographical area such as random, predetermined/fixed path or controlled movement, in order to improve the life time of WSNs.…”