PERFORMANCE MODEL CONSTRUCTION APPARATUS, PERFORMANCE MODEL CONSTRUCTION METHOD AND PROGRAM
A performance model construction apparatus according to an aspect of the present disclosure is a performance model construction apparatus that constructs a performance model of each base station constituting a cellular network, the apparatus including an input unit configured to input an accommodated user number observation value representing an observation value of the number of accommodated users of each base station and a performance observation value representing an observation value of predetermined performance related to the base station when the accommodated user number observation value is observed, and a construction unit configured to construct a performance model representing a relationship between the number of accommodated users and the performance using the accommodated user number observation value, the performance observation value, and the number of observations of the accommodated user number observation value and the performance observation value.
1 . A performance model construction apparatus configured to construct a performance model of each base station constituting a cellular network, the performance model construction apparatus comprising:
circuitry configured to
receive (i) a first value representing an observed number of accommodated users by each base station and (ii) a second value representing an observed performance related to the base station when the first value is observed, and
construct the performance model that represents a relationship between the number of accommodated users and the performance, based on the first value, the second value, and the number of observations for the first value and the second value.
2 . The performance model construction apparatus according to claim 1 , wherein the circuitry is configured to
calculate, for each of base stations, a parameter corresponding to the number of observations of the base station, and
construct, for each of the base stations, the performance model in which a first trend of all base stations and a second trend of the base station are adjusted using the parameter by hierarchical Bayesian modeling,
wherein the first trend and the second trend are in association with the relationship between the number of accommodated users and the performance.
3 . The performance model construction apparatus according to claim 1 , wherein the circuitry is configured to
calculate, for each of base stations, a parameter corresponding to the number of observations of the base station, and
construct, for each of the base stations, the performance model in which (i) a first trend of second base stations having a same attribute and (ii) a second trend of the base station are adjusted using the parameter by hierarchical Bayesian modeling,
wherein the first trend and the second trend are in association with the relationship between the number of accommodated users and the performance.
4 . The performance model construction apparatus according to claim 3 , wherein the second base stations represent a set of base stations using a same frequency band.
5 . The performance model construction apparatus according to claim 1 , wherein the circuitry is configured to
calculate, for each of base stations, a parameter corresponding to the number of observations of the base station, and
construct, for each of the base stations, the performance model in which (i) a first trend of second base stations in a same sector or with a same carrier and (ii) a second trend of the base station are adjusted using the parameter by hierarchical Bayesian modeling,
wherein the first trend and the second trend are in association with the relationship between the number of accommodated users and the performance.
6 . The performance model construction apparatus according to claim 2 , wherein the circuitry is configured to
calculate the parameter whose value increases in accordance with an increasing number of observations of the base station, and
calculate the parameter whose value decreases in accordance with a decreasing number of observations of the base station.
7 . A performance model construction method executed by a performance model construction apparatus that constructs a performance model of each base station constituting a cellular network, the performance model construction method comprising:
receiving (i) a first value representing an observed number of accommodated users by each base station and (ii) a second value representing an observed performance related to the base station when the first value is observed; and
constructing the performance model that represents a relationship between the number of accommodated users and the performance, based on the first value, the second value, and the number of observations for the first value and the second value.
8 . A non-transitory computer readable storage medium storing a program for causing a computer to execute the performance model construction method of claim 7 .