Integrated circuit for radio transmission
View Patent ↗A radio transmitting device and method enables reduction of an increase of CGI memories for the control channel and an improvement of the throughput of the data channel. When multiplex transmission through the control channel and the data channel is carried out and when adaptive modulation is applied to both channels, an MCS selecting section ( 108 ) is provided with one CQI table for the data channel and CQI tables for the control channel, and a table selecting MCS determining section ( 201 ) selects one of the tables depending on the transmission bandwidth of the terminal and determines the MCS of the control channel while looking up the selected CQI table.
1. An integrated circuit for controlling a process comprising:
coding control data using a modulation and coding scheme (MCS) for a radio data channel and an offset value, the offset value being set for each form of the control data; and
transmitting data in the radio data channel and the control data coded with a coding rate according to the form of the control data.
2. The integrated circuit according to claim 1 , wherein the coded control data is generated with a different coding rate for each form of the control data.
3. The integrated circuit according to claim 1 , wherein the control data is coded with a MCS, which is determined based on the MCS for the radio data channel and the offset value.
4. The integrated circuit according to claim 1 , wherein the control data is ACK/NACK or channel quality indicator (CQI).
5. The integrated circuit according to claim 1 , wherein the data and the coded control data are multiplexed and transmitted.
6. The integrated circuit according to claim 1 , wherein the process that the integrated circuit controls further comprises receiving control information, and the MCS for the radio data channel is determined based on the received control information.
7. The integrated circuit according to claim 6 , wherein the control data is coded with the received control information and the offset value.
8. The integrated circuit according to claim 6 , wherein the control data is coded based on control information, into which the received control information is adjusted based on the offset value.
9. The integrated circuit according to claim 6 , wherein the control information is channel quality indicator (CQI).
10. The integrated circuit according to claim 1 , wherein the offset value is given by multiplying a predetermined offset value with a factor for each form of the control data.
11. The integrated circuit according to claim 1 , wherein the offset value is associated with a parameter of a radio transmission apparatus.
12. The integrated circuit according to claim 11 , wherein the parameter is a transmission bandwidth, scheduling scheme, frequency hopping or a number of retransmissions.