A QoS-based ONU Group Planning Algorithm for Smart Grid Communication Network

To satisfy the quality of service requirements of various electricity information interactive applications in power fiber to the home network, we propose a QoS-based optical network unit group planning algorithm. This method uses several ONUs to converge data from all kinds of sensors in a network and then transmit it to OLT through the optical fiber composite low-voltage cable. Process of this method is divided into two stages. First, based on QoS requirements of a network including packet delay, packet error probability and packet loss rate, the number of ONUs in a certain area is solved by a series of mathematical methods such as queuing theory. Then, locations of ONUs are planned by using a tabu-search-algorithm-based ONU location planning method to achieve the lowest power consumption of ONUs. Evaluation results show that our proposed method can guarantee QoS of a network and reduce total power consumption effectively.