The Research On Energy-efficient Algorithms Based On Position Information In Sensor Networks

Recent advances in sensor technology, low-power electronics, and low-power radio frequency design have enabled the development of inexpensive and low-power wireless sensors that can be connected via a wireless network. Wireless Sensor network can be applied in many areas such as military affairs, commerce, medical care, environmental monitoring, Scientists predict that sensor network will become an important part of daily life in our new era.Although sensor network has a great future, a remarkable character, limited by energy, puzzles all the researchers and it has become the bottle-neck. How to save energy, especially to save energy for sending the data, and extend the life of network becomes a hotspot all over the world.With the development of the location technology ,the nodes of the sensor network is often allocated location system .The algorithms of this paper is proposed with the premise that the nodes are allocated with location system and realize energy efficiency by valid information. Firstly, many energy efficient algorithms is analyzed. The main works of this paper are following:(1)Many researchers have declared the fact that energy consumption will increase with the square of the distance that the data is transmitted for the wireless signals. And it will be exponent for the underwater acoustic communication. So short ranges multi-hop, rather than single hop, is widely used to save energy in sensor network. This paper analyzes the relation among the transmission distance, hop and energy consumption. We can get the graphic of the node energy consumption from the result. This paper proposes a best hop routing algorithm combining location auxiliary routing mechanism with energy consumption curve, which ensures the energy consumption is efficient and evenly in routing process .Compared to the classic...