Transmission apparatus
First Claim
1. A transmission apparatus that transmits a data signal to a reception apparatus, comprising:
- a control information reception unit that receives control information which is transmitted on a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH) from the reception apparatus;
a control information transmission unit that transmits an Scheduling Request (SR) that requests the control information;
a transmission mode selection unit that selects a transmission mode for the data signal; and
a transmit power control unit that configures a transmission power for the data signal, whereinthe transmission mode includes a first transmission mode in which the control information is received on the PDCCH or the EPDCCH in the control information reception unit, and the data signal based on a transmission parameter included in the control information is transmitted, and a second transmission mode in which the control information is not received on any one of the PDCCH and the EPDCCH, and the data signal is transmitted without the reception apparatus being notified of a transmission timing of the data signal, andin a case where transmission of the SR is possible and data transmission is possible with the first transmission mode and the second transmission mode, the transmission apparatus configures a first transmission power for the first transmission mode and a second transmission power for the second transmission mode.
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Accused Products
Abstract
In M2M communication, data transmission is performed 4 msec after control information for dynamic scheduling is received from a base station apparatus, and the data transmission that needs immediacy has more overhead. In a case where a transmission apparatus performs data transmission to a reception apparatus, there are a first transmission mode in which a data signal based on a transmission parameter included in the received control information is transmitted, and a second transmission mode in which the control signal information is not received, and the data signal is transmitted without the reception apparatus being notified of a transmission timing of the data signal. In a case where transmission of an SR is possible and in a case where data communication is possible with the first transmission mode and the second transmission mode, the transmission apparatus configures different transmission powers in accordance with the transmission modes.
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Citations
8 Claims
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1. A transmission apparatus that transmits a data signal to a reception apparatus, comprising:
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a control information reception unit that receives control information which is transmitted on a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH) from the reception apparatus; a control information transmission unit that transmits an Scheduling Request (SR) that requests the control information; a transmission mode selection unit that selects a transmission mode for the data signal; and a transmit power control unit that configures a transmission power for the data signal, wherein the transmission mode includes a first transmission mode in which the control information is received on the PDCCH or the EPDCCH in the control information reception unit, and the data signal based on a transmission parameter included in the control information is transmitted, and a second transmission mode in which the control information is not received on any one of the PDCCH and the EPDCCH, and the data signal is transmitted without the reception apparatus being notified of a transmission timing of the data signal, and in a case where transmission of the SR is possible and data transmission is possible with the first transmission mode and the second transmission mode, the transmission apparatus configures a first transmission power for the first transmission mode and a second transmission power for the second transmission mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification