Patent ID: 11764861

Abstract:
Interferences in multi-feeder links on a same frequency between an aerial-floating type communication relay apparatus and plural gateway (GW) stations are dynamically suppressed. Each of the plural GW stations transmits plural pilot signals with frequencies different from each other in the feeder link. A relay communication station of a communication relay apparatus: estimates a propagation path response by calculating plural path differences between the plural GW stations and an antenna for feeder link of a communication relay apparatus, based on reception results of the plural pilot signals received from each of the plural GW stations; calculates a weight for suppressing an interference signal that causes an interference by a transmission signal transmitted from the GW stations and received by a directional beam corresponding to other GW stations, based on the plural propagation path responses; and subtracts reception signals received respectively by the directional beams corresponding to the other GW stations and multiplied respectively by the weight corresponding to the other GW stations, from the reception signal received by the directional beam corresponding to each of the GW stations.