Wireless sensor networks (WSNs) are an important part of the Internet of Things (IoT). In WSNs, the sensors may act as an information collector as well as relay. This trait will cause the sensors that around the Sink easily run out of battery due to heavy traffic-flow, which is called energy hole problem and limits the network lifetime dramatically. To cope with this problem, we derive an optimal hop distance in multi-hop environment and get a conclusion that the optimal receive signal-to-noise is fixed under the large scale fading model. Then, we get a relationship between transmission power and the optimal sensor's coverage. We proposed a new method to improve WSNs' lifetime by using the optimal hop distance and changing the sensor's coverage according to the distance between sensors and the Sink. Simulations show that the proposed method can improve the lifetime and energy efficient of WSNs. Our research can also be used in SDN to help the controllers make decisions.
A Location-Based Topology Management for Energy Hole Problem in Wireless Sensor Networks
01.08.2018
256060 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
4.0402 STEM: Topology Management for Energy Efficient Sensor Networks
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