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 (MCS1) of the SDCH, an MCS pattern (MCS2) 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 MCS2 and the MCS1, 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 communication method for use by a base station, comprising:
transmitting, to a mobile station, (i) information for determining a first coding rate, and (ii) offset information;
receiving, from the mobile station, a first type of data coded with the first coding rate that is determined by the mobile station based on the information for determining the first coding rate; and
receiving, from the mobile station, a second type of data coded with a second coding rate that is calculated by the mobile station based on (i) the information for determining the first coding rate and (ii) the offset information, the calculating the second coding rate comprising adjusting the first coding rate based on the offset information.
2. The method of claim 1 wherein the first type of data comprises user data and the second type of data comprises control information.
3. The method of claim 1 comprising using a look-up table.
4. 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.
5. A base station, comprising:
a transmitting unit configured to transmit, to a mobile station, (i) information for determining a first coding rate, and (ii) offset information; and
a receiving unit configured to receive, from the mobile station, a first type of data coded with the first coding rate that is determined by the mobile station based on the information for determining the first coding rate, and a second type of data coded with a second coding rate that is calculated by the mobile station based on (i) the information for determining the first coding rate and (ii) the offset information, the calculating the second coding rate comprising adjusting the first coding rate based on the offset information.
6. The base station of claim 5 wherein the first type of data comprises user data and the second type of data comprises control information.
7. The base station of claim 5 , comprising:
a look-up table.
8. The base station of claim 5 wherein the information for determining the first coding rate and the offset information are included in a modulation and coding scheme (MCS) signal.
9. A base station, comprising:
a transmitting unit configured to transmit information for determining a first coding rate, and offset information; and
a receiving unit configured to:
receive and decode a first type of data coded with the first coding rate; and
receive and decode a second type of data coded with a second coding rate, wherein the second coding rate is based on the first coding rate adjusted based on the offset information.
10. The base station of claim 9 wherein the first type of data comprises user data and the second type of data comprises control information.
11. The base station of claim 9 , comprising:
a look-up table.
12. The base station of claim 9 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.
13. The base station of claim 12 , comprising:
a look-up table, wherein the base station is configured to generate the MCS signal using the look-up table.
14. A non-transitory computer-readable medium whose contents configure a first communication apparatus to communicate with a second communication apparatus by performing a method, the method comprising:
transmitting, by the first communication apparatus to the second communication apparatus, information for determining a first coding rate and offset information;
decoding, by the first communication apparatus and based on the first coding rate, data of a first type received from the second communication apparatus and coded with the first coding rate; and
decoding, by the first communication apparatus and based on a second coding rate, data of a second type received from the second communication apparatus and coded with the second coding rate, wherein the second coding rate is based on the first coding rate adjusted based on the offset information.
15. The non-transitory computer-readable medium of claim 14 wherein the first type of data comprises user data and the second type of data comprises control information.
16. The non-transitory computer-readable medium of claim 14 , wherein the method comprises using a look-up table.
17. The non-transitory computer-readable medium of claim 14 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 first communication apparatus.
18. The non-transitory computer-readable medium of claim 17 wherein the first communication apparatus uses a look-up table to generate the MCS signal.
19. The non-transitory computer-readable medium of claim 14 wherein the first communication apparatus comprises a base station and the second communication apparatus comprises a mobile station.