Header error detection for wireless data cells

Abstract

An improved method and transceiver for using the method for detecting header errors includes a header processor for reconfiguring an ATM cell header by extracting the 8 bit header error check (HEC) and replacing it with an enhanced 16 or 24 bit HEC (EHEC). On the receive path, the received header is compared to the EHEC and if errors are indicated, the cell is discarded. Enhancements include FEC encoding on the entire cell during transmission, and if during reception uncorrectable errors exist using said EHEC to determine whether the error is in the header or is in the payload. If a cell with an error in its payload belongs to a group of related cells, for example an AAL5 frame, the system discontinues the transmission of the remaining cells of the frame.

1 . A method for treating transmission errors in data cells which include a first data field, a check on said first data field, and at least one additional data field, wherein each cell is transmitted with additional bits for the purpose of allowing a receiver of the cell to determine whether there are uncorrectable errors, said method comprising: 
 detecting errors on said first data field;    detecting uncorrected errors on said cell;    determining an error is present in said at least one additional data field if an uncorrected error is detected in said cell and no error is detected in said data field; and    executing a treatment process depending on the type of cell and the field in error.    
     
     
         2 . A radio unit adapted to carry out the method of  claim 1 .  
     
     
         3 . A wireless network adapted to carry out the method of  claim 1.