Radio base station and communication control method
AssigneeKYOCERA Corporation
InventorToru Sahara
Life of this patent
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Abstract
A radio base station (eNB 1) receives an SRS from the radio terminal (UE 2A) and SRSes from radio terminals (UE 2B through UE 2D), and calculates, on the basis of at least one of the SRSes from the radio terminal (UE 2A) and from the radio terminals (UE 2B through UE 2D), a reception weight that is to be used for wireless communication with the radio terminal (UE 2A).
Claims4
A radio base station of an adaptive array scheme, which transmits and receives a radio signal to and from a radio terminal using a plurality of antennas, comprising:
- a reception unit configured to receive a plurality of known signals including a first known signal that is transmitted from a first radio terminal using a first radio resource, and a second known signal that is transmitted from a second radio terminal using a second radio resource different from the first radio resource;
- and
- a calculation unit configured to select the second known signal from the plurality of known signals on the basis of a frequency band of the first radio resource and calculate an antenna weight used in radio communication with the first radio terminal, on the basis of the first known signal received in the reception unit and the second known signal received in the reception unit and selected in the calculation unit.
A communication control method in a radio base station of an adaptive array scheme, which transmits and receives a radio signal to and from a radio terminal using a plurality of antennas, comprising the steps of:
- receiving a plurality of known signals including a first known signal that is transmitted from a first radio terminal using a first radio resource and a second known signal that is transmitted from a second radio terminal using a second radio resource different from the first radio resource;
- selecting the second known signal from the plurality of known signals on the basis of a frequency band of the first radio resource;
- and
- calculating an antenna weight used in radio communication with the first radio terminal, on the basis of the received first known signal and the received and selected second known signal.
Dependencies are inferred from the claim text.