Extended range sequence numbering for selective repeat data transmission protocol
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United States of America Patent
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Jul 9, 2002
Issued Date -
N/A
app pub date -
Oct 26, 1999
filing date -
Jun 17, 1997
priority date (Note) -
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Abstract
A method and apparatus for extending the sequence numbering range for a selective repeat transmission protocol is described. In accordance with one embodiment of the invention, data frames are transmitted including an eight-bit sequence number and a one-bit retransmit flag. The one bit retransmit flag indicates whether the frame is newly transmitted or retransmitted due to a failed first transmission. The transmit and receive systems each maintain a twelve-bit sequence number referred to as 'long sequence numbers' comprised of the eight-bit sequence number transmitted with each frame and a four-bit extension. The long sequence number is transmitted within control frames and the eight-bit sequence number is transmitted within the data frames.
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