OTN/PTN BASED SOFTWARE-DEFINED NETWORK FOR FRONT HAUL AND OPERATION METHOD OF CONTROLLER AND NETWORK APPARATUS FOR SAME

摘要

Disclosed is a front-haul software defined network (SDN). The front-haul SDN for connecting at least one digital unit (DU) with at least radio unit (RU) includes: at least one network equipment for connecting at least one DU with at least one RU; and a transport SDN controller for controlling at least one of the network equipment to control a connection path between the at least one DU and the at least one RU. In addition, an interface between the at least one DU and the at least one network equipment and an interface between the at least one network equipment and the at least one RU are common public radio interfaces (CPRI). Therefore, when a communication company uses the front-haul SDN according to the present invention, wireless resources such as the DU are flexibly used according to traffic fluctuation, and difficulty on the DU is promptly recovered.;COPYRIGHT KIPO 2016