Patent ID: 9608852
Date: 2017-03-28
CPC Classifications: H04J,H04L

Claim:
1. A base-station control device that issues an operation instruction to each of base stations in a wireless communication system in which a plurality of the base stations perform transmission at a same time and a same frequency, wherein: the base-station control device is configured to collect, from each of the plurality of base stations, a frequency offset of a reception signal that is transmitted from a mobile station to the base stations and that is detected by each of the base stations; and the base-station control device is configured to determine a phase rotation amount that at least one of the base stations use to rotate a phase of a transmission signal to be transmitted by the at least one of the base stations, the base-station control device determines the phase rotation amount by using two or more of the frequency offsets detected by the base stations that are different from each other among a plurality of the frequency offsets collected from the base stations, or by using the frequency offsets of reception signals from two or more different mobile stations that are collected from one of the base stations.