Link Quality Optimisation and Energy Efficiency in Wireless Sensor Networks using Game Theory
Ευάγγελος Δ. Σπύρου · Aristotle University of Thessaloniki · 2019
Link Quality is a major in wireless communications. Strengthening the quality of service between links can ensure a stable and well-setup network. Transmission Power adjustment provides means to optimise network reliability in communication. The intuitive play would be to raise the transmission power, in order to produce a better Signal-to-Interference-and-Noise Ratio. However, this strategy introduces an extra overhead of interference, which results in increase in packet loss and collisions for the wireless medium. Furthermore, topology control is optimised with the adjustment of transmission power, since it is responsible for the node degree and the final neighbourhood establishment. Hence, it is intuitive that game-theoretic algorithms can be used to optimise link quality while keeping energy consumption through minimum transmission power to a low value, To this end, we formulate link quality optimisation problems as non-cooperative Potential Games. This class of games can be solved in a distributed fashion. We investigate power and topology control, as well as end-to-end throughput optimisation with convex and non-convex utilities and different properties in the strategy sets. Moreover, we investigate cooperative games in a combinatorial optimisation fashion, to form cooperative transmission policies.