BASE STATION AND METHOD FOR RECEIVING CONTROL INFORMATION

摘要

Disclosed are an encoding ratio setting method and a radio communication device which can avoid encoding of control information at an encoding ratio lower than necessary and suppress lowering of the transmission efficiency of the control information. In the device, an encoding ratio setting unit (122) sets the encoding ratio R′control of the control information which is time-multiplexed with user data, according to the encoding ratio Rdata of the user data, ΔPUSCHoffset as the PUSCH offset of each control information, and ΔRANKoffset as the rank offset based on the rank value of the data channel using Expression (1).;Rcontrol′=OQ′max(O⌈O10-ΔoffsetPUSCH+ΔoffsetRANK10·Rdata⌉,O4·Msc)(1);Where ┌x┐ is an integer not greater than x, and max(x,y) is the greater one among X and Y.

主权项

1. An integrated circuit, which, in operation, controls a process of receiving control information by a communication apparatus, the process comprising:
transmitting a first offset and a second offset to a user equipment (UE); and receiving control information that is encoded in accordance with a coding rate, the coding rate being set based on a offset value corresponding to one of the first offset and the second offset, the first offset being different from the second offset, wherein the second offset is not used in a case when a rank indicator is 1.