Communications unit and method of communicating having efficient packet acknowledgement
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 12, 2000
Grant Date -
N/A
app pub date -
Nov 15, 1996
filing date -
Nov 15, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A communications unit (10) with a packet subdivider operable on a data packet (200) and an error detecting code generator. An acknowledgement message (NAK) is generated including error detecting code corresponding to packet portions (210-204) from the packet subdivider, thereby requesting retransmission of packet portions. At an originating unit (100) an error detection code is computed for each portion. The computed second error detection code for each sub-portion is compared with the received first error detection code for that portion. Portions for which corresponding error detection codes do not match are identified as bad portions and are retransmitted (220).
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