Header error detection for wireless data cells
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United States of America Patent
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Sep 30, 2003
Grant Date -
N/A
app pub date -
Dec 24, 1997
filing date -
Dec 24, 1997
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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.
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