Transmission apparatus and radio communication method
AssigneeNtt Docomo, Inc.
InventorsYuki Matsumura, Kazuki Takeda, Kazuaki Takeda, Satoshi Nagata
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Abstract
The present invention is designed so that control information and reference signals that are transmitted by using control channels can be multiplexed adequately in the UL/DL in future radio communication systems. According to the present invention, A transmission apparatus transmits control information by using a control channel, and this transmission apparatus has a multiplexing section that multiplexes the control information and a reference signal in a time domain in one symbol, and a transmission section that transmits the control information and the reference signal.
Claims4
A terminal comprising:
- a processor that controls mapping of reference signals and modulation symbols of a shared channel in one symbol;
- and
- a transmitter that transmits the reference signals and the modulation symbols using discrete Fourier transform (DFT),
- wherein the processor inserts the reference signal in the modulation symbols before the DFT,
- wherein the processor determines inserting positions of the reference signals based on a first information informed by higher layer signaling, and on a second information included in a downlink control information,
- wherein the processor performs the DFT, and the transmitter transmits the reference signals and the modulation symbols after the DFT, and
- wherein a number of sequences of the reference signal is determined per bandwidth to be allocated to the shared channel.
A radio communication method for a terminal comprising:
- controlling mapping of reference signals and modulation symbols of a shared channel in one symbol,
- determining inserting positions of the reference signals based on a first information informed by higher layer signaling, and on a second information included in a downlink control information,
- inserting the reference signal in the modulation symbols before discrete Fourier transform (DFT);
- and
- transmitting the reference signals and the modulation symbols using the DFT,
- wherein the terminal performs the DFT, and transmits the reference signals and the modulation symbols after the DFT, and
- wherein a number of sequences of the reference signal is determined per bandwidth to be allocated to the shared channel.
A system comprising a terminal and a base station, wherein:
- the terminal comprises:
- a processor that controls mapping of reference signals and modulation symbols of a shared channel in one symbol;
- and
- a transmitter that transmits the reference signals and the modulation symbols using discrete Fourier transform (DFT);
- and
- the base station comprises:
- a receiver that receives the shared channel with the DFT used;
- wherein the processor in the terminal inserts the reference signal in the modulation symbols before the DFT,
- wherein the processor in the terminal determines inserting positions of the reference signals based on a first information informed by higher layer signaling, and on a second information included in a downlink control information,
- wherein the processor in the terminal performs the DFT, and the transmitter in the terminal transmits the reference signals and the modulation symbols after the DFT, and
- wherein a number of sequences of the reference signal is determined per bandwidth to be allocated to the shared channel.
Dependencies are inferred from the claim text.