Radio transmission apparatus, and radio transmission method
View Patent ↗Provided is a communication device, which is enabled to improve the throughput of a communication system by reducing the difference of a transmission power between an SCCH and an SDCH thereby to satisfy the required quality of a PAPR. In this device, an MCS selection unit ( 111 ) of a transmission unit ( 110 ) decides, with reference to a CQI lookup table, an MCS pattern (MCS 1 ) of the SDCH, an MCS pattern (MCS 2 ) of the SCCH and information (multiplex information) on multiplex positions on the time axes of those two channels, on the basis of the CQI information. On the basis of the MCS 2 and the MCS 1 , encoding modulation units ( 112 and 113 ) perform encoding and modulating operations. According to the multiplex information, a channel multiplexing unit ( 114 ) time-division multiplexes the SCCH and the SDCH thereby to generate a transmission signal.
1. A transmitting method, comprising:
determining a first coding rate based on information for determining the first coding rate transmitted by a base station;
calculating a second coding rate based on the information for determining the first coding rate and offset information transmitted by the base station, the calculating the second coding rate comprising adjusting the first coding rate based on the offset information;
transmitting a first type of data using the first coding rate; and
transmitting a second type of data using the second coding rate.
2. The method of claim 1 wherein the calculating the second coding rate comprises using a look-up table.
3. The method of claim 1 wherein the calculating the second coding rate is performed by dedicated circuitry of a mobile device.
4. The method of claim 1 wherein the first type of data comprises user data and the second type of data comprises control information.
5. The method of claim 1 wherein the information for determining the first coding rate and the offset information are included in a modulation and coding scheme (MCS) signal transmitted by the base station.
6. A transmitting apparatus, comprising:
a determining unit configured to determine a first coding rate based on received information for determining the first coding rate;
a calculating unit configured to calculate a second coding rate based on the received information for determining the first coding rate and received offset information, wherein the calculating unit is configured to calculate the second coding rate by adjusting the first coding rate based on the offset information; and
a transmitting unit configured to transmit a first type of information using the first coding rate and a second type of information using the second coding rate.
7. The transmitting apparatus of claim 6 wherein the calculating unit comprises a look-up table.
8. The transmitting apparatus of claim 6 wherein the calculating unit comprises dedicated circuitry.
9. The transmitting apparatus of claim 6 wherein the first type of information comprises user data and the second type of information comprises control information.
10. The transmitting apparatus of claim 6 wherein the information for determining the first coding rate and the offset information are included in a modulation and coding scheme (MCS) signal received from a base station.
11. A mobile apparatus, comprising:
a receiver configured to receive modulation and coding scheme (MCS) information;
circuitry configured to:
determine a first coding rate based on received information related to the first coding rate;
calculate a second coding rate based on the received information related to the first coding rate and received offset information, wherein the circuitry is configured to calculate the second coding rate by adjusting the first coding rate based on the offset information; and
a transmitter configured to transmit a first type of information using the first coding rate and to transmit a second type of information using the second coding rate.
12. The mobile apparatus of claim 11 wherein the circuitry comprises a look-up table.
13. The mobile apparatus of claim 11 wherein the first type of information comprises user data and the second type of information comprises control information.
14. A system, comprising:
a base station configured to transmit modulation and coding scheme (MCS) information, the MCS information including information to determine a first coding rate and offset information; and
a mobile apparatus including:
a receiver configured to receive the MCS information;
circuitry configured to:
determine a first coding rate based on the information to determine the first coding rate;
calculate a second coding rate based on the information to determine the first coding rate and the offset information, wherein the circuitry is configured to calculate the second coding rate by adjusting the first coding rate based on the offset information; and
a transmitter configured to transmit a first type of information using the first coding rate and to transmit a second type of information using the second coding rate.
15. The system of claim 14 wherein the circuitry comprises a look-up table.