RADIO ZONE DESIGN APPARATUS, RADIO ZONE DESIGN METHOD, AND PROGRAM
A radio zone design apparatus includes a processor for executing a process including arranging terminal positions and candidate positions for an installation position of a base station or a relay station in the wireless area including a shielding object; calculating reception power between each of the terminal positions and a corresponding one of the candidate positions, and reception power between each of the candidate positions and a corresponding one of other candidate positions; selecting, for each of different numbers of base stations, a candidate position of the base station for a corresponding number of base stations; selecting a candidate position of the relay station capable of accommodating, in combination with the candidate position of the base station, the terminal position that is not able to be accommodated; and determining installation positions of the base station and the relay station in which a cost of the wireless area is minimized.
1 . A radio zone design apparatus for designing installation positions of a base station and a relay station for constructing a wireless area, the radio zone design apparatus comprising:
a processor; and
a memory storing instructions that cause the processor to execute a process, the process including
arranging a plurality of terminal positions and a plurality of candidate positions, the plurality of terminal positions being evaluation points, and the plurality of candidate positions being candidates for an installation position of the base station or the relay station in the wireless area including a shielding object;
calculating reception power between each of the terminal positions and a corresponding one of the candidate positions, and reception power between each of the candidate positions and a corresponding one of other candidate positions;
selecting, for each of different numbers of base stations, a candidate position of the base station for a corresponding number of base stations from among the plurality of candidate positions;
selecting, in a case where there is a terminal position that is not able to be accommodated by the candidate position of the base station among the plurality of terminal positions, a candidate position of the relay station capable of accommodating, in combination with the candidate position of the base station, the terminal position that is not able to be accommodated; and
determining installation positions of the base station and the relay station in which a cost of the wireless area is minimized from among candidate positions of the base station or combinations of the candidate position of the base station and the candidate position of the relay station.
2 . The radio zone design apparatus according to claim 1 , wherein the plurality of terminal positions are divided into clusters of the number of base stations, and the candidate position of the base station in which more terminal positions satisfy a predetermined communication quality is selected, for each of the clusters.
3 . The radio zone design apparatus according to claim 1 , wherein the candidate position of the base station is selected in order from the candidate position of the base station in which more terminal positions satisfy a predetermined communication quality until the number of base stations is reached.
4 . The radio zone design apparatus according to claim 1 , wherein
the candidate position of the relay station capable of accommodating the terminal position that is not able to be accommodated is extracted from among candidate positions excluding the candidate position of the base station among the plurality of candidate positions, and
a candidate position of the relay station in which reception power from the candidate position of the base station is greater than or equal to a predetermined value is selected from among candidate positions of the relay station extracted.
5 . A radio zone design method executed by a radio zone design apparatus for designing installation positions of a base station and a relay station for constructing a wireless area, the radio zone design method comprising:
arranging a plurality of terminal positions and a plurality of candidate positions, the plurality of terminal positions being evaluation points, and the plurality of candidate positions being candidates for an installation position of the base station or the relay station in the wireless area including a shielding object;
calculating reception power between each of the terminal positions and a corresponding one of the candidate positions, and reception power between each of the candidate positions and a corresponding one of other candidate positions;
selecting, for each of different numbers of base stations, a candidate position of the base station for a corresponding number of base stations from among the plurality of candidate positions;
selecting, in a case where there is a terminal position that is not able to be accommodated by the candidate position of the base station among the plurality of terminal positions, a candidate position of the relay station capable of accommodating, in combination with the candidate position of the base station, the terminal position that is not able to be accommodated; and
determining installation positions of the base station and the relay station in which a cost of the wireless area is minimized from among candidate positions of the base station or combinations of the candidate position of the base station and the candidate position of the relay station.
6 . A non-transitory computer-readable recording medium having computer-readable instructions stored thereon, which when executed, cause a computer to execute the radio zone design method according to claim 5 .