Patent ID: 8385307

Claim:
A transport format combination (TFC) selection apparatus comprising: a signal to interference ratio (SIR) calculation unit calculating SIR by using a common pilot channel (CPICH) symbol of receive data; a conversion unit obtaining STFC(m) which contains M pieces of TFC corresponding to the calculated SIR; where STFC(m) is one of selected transport format combinations (STFCs) denoted as STFC( 1 ), STFC( 2 ), . . ., STFC(m), . . . and STFC(M) (m=1, 2, . . ., M); a total transmit power calculation unit selecting TFC corresponding to the obtained STFC(m) from a transport format combination set (TFCS) which is a set of transport format combinations (TFCs) sequenced in proportion to a magnitude of total transmit power, and calculating total transmit power of TFC included in the TFCS in order indicated by a search direction signal, beginning with the selected TFC as a starting point; and a TFC selection unit generating the search direction signal based on the calculated total transmit power of the TFC as the starting point, and selecting TFC as an optimum TFC, to be applied to transmit data from the TFCS, corresponding to total transmit power which indicates less than or equal to as well as approximate to a maximum value allowed for the transmit data.