Connection control device, communication system, and connection control method

A communication system comprising a plurality of radio units that perform radio communication with a plurality of terminal devices, a plurality of baseband processing devices that are connected to the radio units, and a connection control device that controls a connection between the radio units and the baseband processing devices, wherein the connection control device includes

• a memory, and
• processor circuitry coupled to the memory, and configured to execute a process including:
• acquiring information on reception power in the terminal devices received from each of the radio units;
• aggregating an estimated communication load in each of the radio units by using the information on the reception power;
• determining a radio unit that belongs to each of a plurality of cells on a basis of an index indicating variance in processing load for each cell associated with the estimated communication load in each of the radio units in the respective cells;
• and
• generating connection control information that allows a baseband processing device that manages a cell to be connected to the radio unit that belongs to the cell, wherein
• the determining includes
• selecting a parent radio unit belonging to each of the cells on a basis of positional relationships between the radio units, and
• determining a child radio unit by determining, on a basis of the index indicating the variance in the processing load for each cell to which the parent radio unit belongs, whether an adjacent radio unit that is adjacent to the cell to which the parent radio unit belongs is allowed to be the child radio unit that belongs to the same cell as the cell to which the parent radio unit belongs.

A connection control method comprising:

• acquiring information on reception power in a plurality of terminal devices received from each of a plurality of radio units;
• aggregating, by processor circuitry, an estimated communication load in each of the radio units by using the information on the reception power;
• determining, by the processor circuitry, a radio unit that belongs to each of a plurality of cells on a basis of an index indicating variance in processing load for each cell associated with the estimated communication load in each of the radio units in the respective cells;
• and
• generating, by the processor circuitry, connection control information that allows a baseband processing device that manages a cell to be connected to the radio unit that belongs to the cell, wherein
• the determining includes
• selecting a parent radio unit belonging to each of the cells on a basis of positional relationships between the radio units, and
• determining a child radio unit by determining, on a basis of the index indicating the variance in the processing load for each cell to which the parent radio unit belongs, whether an adjacent radio unit that is adjacent to the cell to which the parent radio unit belongs is allowed to be the child radio unit that belongs to the same cell as the cell to which the parent radio unit belongs.