Patent ID: 7856210

Claim:
A radio access network node comprising a transport format selector which uses plural input parameters including a reported value for a first input parameter for determining a transport format for a high-speed downlink shared channel, characterized in that the transport format selector is arranged to promote radio quality of the high-speed downlink shared channel by compensating, in the determining of the transport format, for any inaccurate representation by a reported input value of a first input parameter, the first input parameter being ascribed to a radio condition which has changed at the time of transmission of the high-speed downlink shared channel; the first parameter, for which the transport format selector anticipates a difference, is a channel quality (CQI) and the radio condition is radio channel quality; and wherein the transport format selector uses the reported value of the channel quality indicator and at least another of the plural input parameters to obtain a candidate transport format size, and then uses for the high-speed downlink shared channel (HS-DSCH) an actual transport format size smaller than the candidate transport format size, thereby providing the actual transport format size a greater energy per data bit than would be afforded by the candidate transport format size.