Management and control apparatus, base station, communication system and control method

A base station that forms a first communication area or a base station that forms a second communication area with a range smaller than that of the base station in a first communication area formed by the base station, the base station comprising:

• a transmitter configured to transmit information indicating a communication state with one or more terminals to a management control device that controls a system;
• a receiver configured to receive an optical path switching instruction indicating that the management control device determines that an optical path switching is necessary on the basis of the information;
• and
• a sleep processor configured to shift to a sleep state before the optical path switching is performed or after the switching is performed based on the optical path switching instruction.

A control method comprising:

• acquiring information indicating a communication state with one or more terminals from each of one or more first base stations which perform radio communication with the one or more terminals and one or more second base stations which form a smaller range communication area than that of the one or more first base stations in a communication area formed by the one or more first base stations and perform the radio communication with the one or more terminals;
• determining whether or not an optical path switching and sleep control are necessary on the basis of the information;
• controlling the switching of optical paths of the one or more first base stations or optical paths of the one or more second base stations when it is determined that the optical path switching is necessary;
• and
• shifting the one or more first base stations or the one or more second base stations to a sleep state before the optical path switching is performed or after the switching is performed.