Apparatus and method for controlling selection of a handover destination

摘要

An apparatus acquires a parameter set including first and second parameter subsets. The first parameter subset stores first throughput and first power consumption that are measured, before a handover of a mobile station, by each base-station belonging to a measurement target group including a plurality of handover-candidate base-stations and a handover-source base-station. The second parameter subset stores second throughput and second power consumption that are estimated by each base-station belonging to the measurement target group, on the assumption that the mobile station is handed over to the each base-station. The apparatus calculates, before and after the handover, for each of the plurality of handover-candidate base-stations, a total energy efficiency of a pair of the handover-source base-station and the each of the plurality of handover-candidate base-stations, based on the parameter set, and selects, from among the plurality of handover-candidate base-stations, the handover-destination base-station based on the calculated total energy efficiencies.

主权项

1. An apparatus for controlling selection of a handover destination of a mobile station, the apparatus comprising:
an acquisition unit configured to acquire a parameter set including first and second parameter subsets, the first parameter subset comprising a first throughput and a first power consumption that are measured, before a handover of the mobile station, by each of base stations belonging to a measurement target group including a plurality of handover-candidate base stations and a handover-source base station, the handover-source base station being a base station from which the mobile station is to be handed over to the handover-destination, the first throughput being measured based on the wireless quality between the mobile station and the each base station belonging to the measurement target group, the second parameter subset comprising a second throughput and a second power consumption that are estimated by the each base station belonging to the measurement target group, on an assumption that the mobile station is handed over to the each base station; and a controller configured:
to calculate, before the handover of the mobile station and on the assumption that the mobile station is handed over, for each of the plurality of handover-candidate base stations, a total energy efficiency for a pair of the handover-source base station and the each of the plurality of handover-candidate base stations, based on the respective parameter set, andto select a handover-destination base station to which the mobile station is to be handed over from the handover-source base station, from among the plurality of handover-candidate base stations, based on the total energy efficiencies that have been calculated, before the handover and on the assumption that the mobile station is handed over, for the respective plurality of handover-candidate base stations.