WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATING METHOD
First Claim
1. A wireless communication apparatus of a base station, using antennas for a plurality of systems, forming a multi-beam, transmitting data to a mobile station, and comprising:
- a code book configured to store therein beamforming information;
a pre-coder that reads the code book and executes a process of forming a given beam for the data;
a control unit that, based on feedback information to correct variations in phase occurring at transmitting circuits respectively corresponding to each of the systems, performs control such that the beamforming information to correct the variations in phase is read from the code book; and
a phase correcting unit that corrects a phase of the multi-beam formed by the pre-coder, based on the feedback information and such that relations among the phases of the multi-beam become substantially linear.
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Accused Products
Abstract
A wireless communication apparatus of a base station uses antennas for multiple systems, forms a multi-beam, transmits data to a mobile station, and includes a code book configured to store therein beamforming information; a pre-coder that reads the code book and executes a process of forming a given beam for the data; a control unit that, based on feedback information to correct variations in phase occurring at transmitting circuits respectively corresponding to each of the systems, performs control such that the beamforming information to correct the variations in phase is read from the code book; and a phase correcting unit that corrects a phase of the multi-beam formed by the pre-coder, based on the feedback information and such that relations among the phases of the multi-beam become substantially linear.
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Citations
10 Claims
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1. A wireless communication apparatus of a base station, using antennas for a plurality of systems, forming a multi-beam, transmitting data to a mobile station, and comprising:
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a code book configured to store therein beamforming information; a pre-coder that reads the code book and executes a process of forming a given beam for the data; a control unit that, based on feedback information to correct variations in phase occurring at transmitting circuits respectively corresponding to each of the systems, performs control such that the beamforming information to correct the variations in phase is read from the code book; and a phase correcting unit that corrects a phase of the multi-beam formed by the pre-coder, based on the feedback information and such that relations among the phases of the multi-beam become substantially linear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A wireless communication method of a wireless communication apparatus that is at a base station, uses antennas for a plurality of systems, forms a multi-beam, and transmits data to a mobile station, the wireless communication method comprising:
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reading a code book configured to store therein beamforming information; forming a given beam for the data; performing control, based on feedback information to correct variations in phase occurring at transmitting circuits respectively corresponding to each of the systems, such that the beamforming information to correct the variations in phase is read from the code book; and correcting a phase of the multi-beam formed at the forming, based on the feedback information and such that relations among the phases of the multi-beam become substantially linear.
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Specification