Dynamic forward error correction in utra systems

Abstract

In a wireless communication system using multiplexed transport channels in combinations thereof on a coded composite transport channel (CCTrCh), a system for dynamically varying the combinations of transport channels includes configuring means for configuring mutually exclusive dedicated transport channels based on semi-static transport parameters, and mapping means for mapping data to a channel selectively based on a preferred semi-static transport parameter, wherein the mutually exclusive dedicated transport channels are not multiplexed together onto the CCTrCh.

1 . A method for dynamically varying the combinations of transport channels, comprising:
 selecting a transport format combination (TFC) from a TFC set having a semi-static transport parameter for a dedicated traffic channel (DTCH);   the selected TFC set including the optimum semi-static transport parameter based on the transmission power conditions; and   mapping the DTCH as a transport channel in accordance with the selected TFC.   
   
   
       2 . The method of  claim 1  further comprising repeating said selection and mapping at every transmission time interval (TTI). 
   
   
       3 . The method of  claim 1  wherein said selection and mapping are performed concurrently with dynamic link adaptation (DLA). 
   
   
       4 . The method of  claim 1  wherein said parameter is forward error correction (FEC) coding type and rate. 
   
   
       5 . The method of  claim 1  wherein said parameter is cyclic redundancy code (CRC) size. 
   
   
       6 . The method of  claim 1  wherein said parameter is a rate matching value. 
   
   
       7 . A user equipment comprising a medium access control (MAC) for selecting a transport format combination (TFC) from a TFC set having a semi-static transport parameter for a dedicated traffic channel (DTCH) and mapping the DTCH as a transport channel in accordance with the selected TFC;
 the selected TFC set including the optimum semi-static transport parameter based on transmission power conditions.   
   
   
       8 . The method of  claim 7  wherein said parameter is forward error correction (FEC) coding type and rate. 
   
   
       9 . The method of  claim 7  wherein said parameter is cyclic redundancy code (CRC) size. 
   
   
       10 . The method of  claim 7  wherein said parameter is a rate matching value.