US 9,001,915 B2 · Communication apparatus, communication method, and transmitting device

Abstract

In MIMO communication, a communication device is provided that transmits a transfer rate request signal while reducing it and reducing the interference and power consumption when the transfer rate request signal is transmitted substantially without lowering the transmission efficiency. A modulation encoding unit encodes and modulates transmission data transmitted to a communication partner and the transfer rate request signal in the plurality of transmission antennas. A transmission unit and a transmission antenna transmit a signal from the modulation encoding unit. A transmission control unit controls transmission of a signal transmitted from the transmission antenna and transmits a transfer rate request signal of one transmission antenna via the transmission antenna according to a comparison result between a difference of the transfer rate request signal in the respective transmission antenna of the communication partner and a predetermined value.

Claims12

Dependent claims

A communication apparatus comprising:

a receiving unit configured to receive a plurality of data transmitted from a plurality of antennas of a communicating party;
a generating section configured to generate a CQI calculated for at least one of the received plurality of data;
a modulating and encoding section configured to modulate and encode transmission data including the CQI;
and
a transmitting unit configured to transmit the transmission data to the communicating party;
wherein said transmitting unit transmits, to the communicating party, information indicating a number corresponding to a number of CQIs included in the transmission data.

3 more elements

Dependencies are inferred from the claim text.

Communication apparatus, communication method, and transmitting device

Life of this patent

Communication apparatus, communication method, and transmitting device

Life of this patent

Abstract

Claims12