Energy-aware QoS control for wireless sensor network

While a lot of research has been done on some important aspects of WSN such as architecture and protocol design, supporting Quality of Service in WSN is still a largely unexplored research field. An application-specific QoS has been defined as the sensor network resolution. The mathematical Gur Game algorithm is used to achieve optimal active sensor number. In this paper, we design a novel energy-aware algorithm based on the previous work to solve the QoS problems. The periodical sleeping mechanism is introduced into the algorithm to save energy. When the optimal number sensors are achieved in initialization stage, not all of the remaining Sleep state nodes need to wake up every second. Simulation results show our method can save more energy than the previous.