A large-scale device collaboration resource selection method with multi-QoS constraint supported

With the rapid development of the "Internet of Things" and large-scale area management, device collaboration has developed to the stage of large-scale device collaboration. Aiming at the large-scale, dynamics and real-time of the large-scale device collaboration system, in order to guarantee the performance of the large-scale device collaboration system, a QoS model of large-scale device collaboration is proposed, which contains device QoS model, composite QoS model and QoS relation model. Based on the model, an algorithm of the device resource selection in large-scale device collaboration system is presented. Finally, the result of simulation experiments on the large-scale device collaboration prototype system shows that the algorithm can satisfy the performance requirements of the large-scale device collaboration system.