CONTROL METHOD, CONTROL APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND PROGRAM
A control method executed by a control apparatus that determines a relief antenna for relieving communication in a failure area and a tilt of the relief antenna, the control method including acquiring an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with a policy function, and selecting the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied, and calculating tilts of the relief antennas selected in the selecting of the relief antennas.
1 . A control method executed by a control apparatus that determines a relief antenna for relieving communication in a failure area and a tilt of the relief antenna, the control method comprising:
acquiring an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with a policy function, and selecting the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied; and
calculating tilts of the relief antennas selected in the selecting of the relief antennas.
2 . The control method according to claim 1 , wherein, when pre-learning of the policy function is performed using training data, the control apparatus acquires an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with the policy function, selects the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied, and updates parameters of the policy function based on a reward obtained when all of the selected relief antennas are used.
3 . The control method according to claim 1 , wherein the predetermined condition is that a cover rate of a failure area is 100% or all of the antennas are selected from the antenna sequence.
4 . The control method according to claim 1 , wherein the policy function has, for each antenna in a set of antennas that are candidates for a relief antenna, a height of the antenna, a distance between the antenna and a center of gravity of a failure area, and a difference in azimuth angle between a center azimuth of the antenna and a direction from the antenna to the center of gravity as inputs, and outputs the antenna sequence.
5 . A control apparatus that determines a relief antenna for relieving communication in a failure area and a tilt of the relief antenna, the control apparatus comprising:
a processor; and
a memory storing instructions that cause the processor to execute a process, the process including
acquiring an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with a policy function, and selecting the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied; and
calculating tilts of the relief antennas selected in the selecting of the relief antennas.
6 . A wireless communication system comprising:
a control apparatus that determines a relief antenna for relieving communication in a failure area and a tilt of the relief antenna; and
one or more wireless base stations,
wherein the control apparatus includes
a processor; and
a memory storing instructions that cause the processor to execute a process, the process including
acquiring an antenna sequence in which a plurality of antennas are arranged in descending order of priority in accordance with a policy function, and selecting the antennas as relief antennas in order from a head of the antenna sequence until a predetermined condition is satisfied, and
calculating tilts of the relief antennas selected in the selecting of the relief antennas.
7 . A non-transitory computer-readable recording medium having computer-readable instructions stored thereon, which when executed, cause a computer to function as the control apparatus according to claim 5 .