MANAGEMENT AND CONTROL APPARATUS, COMMUNICATION SYSTEM AND CONTROL METHOD
A management control device includes: a cooperation information collection unit configured to acquire, at a predetermined period, cooperation information indicating a state of communication with one or more terminals from one or more base stations that perform wireless communication with the one or more terminals; an analysis unit configured to determine whether switching of an optical path is necessary based on the cooperation information; an optical path switching control unit configured to transmit switching destination information including information on a destination of optical path switching to a transfer device that switches the optical path connected to the one or more base stations when it is determined that switching of the optical path is necessary, and instruct a base station that is a source of the optical path switching to change a connection of a terminal associated with switching of the optical path; and a sleep control unit configured to transition the base station that is the source of the optical path switching to a sleep state after the optical path is switched and the connection of the terminal is changed.
1 . A management control device comprising:
a information collector configured to acquire, at a predetermined period, information indicating a state of communication with one or more terminals from one or more base stations that perform wireless communication with the one or more terminals;
an analyzer configured to determine whether switching of an optical path is necessary based on the information;
an optical path switching controller configured to transmit switching destination information including information on a destination of optical path switching to a transfer device that switches the optical path connected to the one or more base stations when it is determined that switching of the optical path is necessary, and instruct a base station that is a source of the optical path switching to change a connection of a terminal associated with switching of the optical path; and
a sleep controller configured to transition the base station that is the source of the optical path switching to a sleep state after the optical path is switched and the connection of the terminal is changed.
2 . The management control device according to claim 1 , wherein
the one or more base stations are a wireless station having a wireless communication function and a distributed station having a signal processing function,
the transfer device is provided between the wireless station and the distributed station,
the information is traffic volume information, and
the analyzer determines whether switching of the optical path is necessary based on a traffic volume indicated by the traffic volume information and a threshold for determining that switching of the optical path is necessary.
3 . The management control device according to claim 1 , wherein
the one or more base stations are a wireless station having a wireless communication function and a distributed station having a signal processing function,
the wireless station is directly connected to the distributed station,
the transfer device is provided between the distributed station and an aggregation station that aggregates uplink signals transmitted by the distributed station,
the information is traffic volume information received by the distributed station from the aggregation station in downlink and traffic volume information transmitted by the distributed station to the aggregation station in uplink, and
the analyzer determines whether switching of the optical path is necessary based on a traffic volume indicated by the traffic volume information and a threshold for determining that switching of the optical path is necessary.
4 . The management control device according to claim 1 , wherein
the one or more base stations are a device that includes, in the same housing, a wireless station having a wireless communication function, a distributed station having a signal processing function, and an aggregation station that aggregates uplink signals transmitted by the distributed station,
the transfer device is provided between the one or more base stations and a node device that performs transmission and reception processing of user data,
the information is information on the traffic volume received by the one or more base stations from the node device in the downlink, and is information on the traffic volume transmitted by the one or more base stations to the node device in the uplink, and
the analyzer determines whether switching of the optical path is necessary based on the volume of traffic indicated by the traffic volume information and a threshold for determining that switching of the optical path is necessary.
5 . A communication system comprising:
a information collector configured to acquire, at a predetermined period, information indicating a state of communication with one or more terminals from one or more base stations that perform wireless communication with the one or more terminals;
an analyzer configured to determine whether switching of an optical path is necessary based on the information;
an optical path switching controller configured to transmit switching destination information including information on a switching destination of an optical path to a transfer device that switches the optical path connected to the one or more base stations when it is determined that switching of the optical path is necessary, and instruct a base station that is a source of the optical path switching to change a connection of a terminal associated with switching of the optical path; and
a sleep controller configured to transition the base station that is the source of the optical path switching to a sleep state after the optical path is switched and the connection of the terminal is changed.
6 . The communication system according to claim 5 , wherein
the optical path switching controller is provided in either a transfer device, a management control device, or an optical transmission management control device,
the transfer device switches an optical path between the one or more base stations and another device,
the management control device manages the system, and
the optical transmission management control device controls at least an optical transmission section between the transfer device and the one or more base stations.
7 . The communication system according to claim 5 , wherein
the sleep controller is provided in either a transfer device, a management control device, or a wireless transmission management control device,
the transfer device switches an optical path between the one or more base stations and another device,
the management control device manages the system, and
the wireless transmission management control device controls a wireless transmission section between the one or more terminals and the one or more base stations.
8 . A control method comprising:
acquiring, at a predetermined period, information indicating a state of communication with one or more terminals from one or more base stations that perform wireless communication with the one or more terminals;
determining whether switching of an optical path is necessary based on the information;
transmitting switching destination information including information on a destination of optical path switching to a transfer device that switches the optical path connected to the one or more base stations when it is determined that switching of the optical path is necessary;
instructing a base station that is a source of the optical path switching to change a connection of a terminal associated with switching of the optical path; and
transitioning the base station that is the source of the optical path switching to a sleep state after the optical path is switched and the connection of the terminal is changed.