System level results of a novel energy efficient time resource scheduling method in 3GPP LTE-Advanced heterogeneous networks

Due to the demand of higher throughput and lower latency of mobile users, network operators have established more and more service nodes to fulfill the needs. However, the constructions of service nodes lead to another problem of energy waste in some time intervals and regions. Aimed at the tendency of deploying heterogeneous networks, how to make full use of every access point and reduce energy consumption become another important problem. In order to reduce energy waste in such conditions, we raise a novel method of time domain resource scheduling of 3GPP LTE-Advanced heterogeneous networks. In multi-base stations scenario, the joint scheduling of on-off status in time domain with low traffic load can effectively reduce energy consumption considering the cost of on-off delays and static power consumption. The novel scheduling method make a balance between energy consumption and system performance. Compared with traditional proportional fairness method and traditional on-off scheduling method, our method is proved to be a more energy efficient method without losing performance of users. Simulation result under LTE-Advanced system level simulation has been done to prove the effectiveness of our method.