Patent ID: 9277557
Filing Date: 2016-03-01
CPC Classification: H04B,H04L,H04W,Y02D

Claim Text:
1. A radio base station employing an adaptive array scheme, which transmits and receives a radio signal to and from a radio terminal using a plurality of antennas, comprising: a processor that calculates antenna weights for each of a plurality of uplink frequency bands, on the basis of respective reference signals of each of the plurality of uplink frequency bands in an uplink radio signal; and a memory that stores the antenna weights, wherein the processor is configured to be communicatively coupled to the plurality of antennas, the processor sets a beam-forming antenna weight for a downlink frequency band to be used in a downlink radio signal, and the processor sets an antenna weight for an uplink frequency band which is closest to the downlink frequency band among the antenna weights as the beam-forming antenna weight for the downlink frequency band when the downlink frequency band is not the same as the uplink frequency band.