Energy-efficient algorithm of base station based on delayed rejection model over heterogeneous wireless networks

Energy consumption has become a big issue in communication industry recently. Many researchers study how to decrease the energy consumption while maintaining the QoS (Quality of Service). Aiming at solving the problem that in dynamic resource grid shut mode energy-efficient algorithm elastic services are refused immediately once no resource is available, which results in high blocking rate for elastic service. We propose an energy-efficient algorithm of base station based on delayed rejection model. In the algorithm we set up buffer for elastic service in heterogeneous networks. When all the available resources are occupied, new-coming elastic arrivals are allowed to get access to the buffer waiting for service until resources have been freed, these elastic services will be served according to the sequence in the queue. Simulation results show that the blocking rate for elastic service substantially decreases while the system energy consumption scarcely increases. © 2014 by Binary Information Press.