Automatic repeat request(ARQ) data communications method and app

Details Automatic repeat request(ARQ) data communications method and app Automatic repeat request(ARQ) data communications method and app

1997-02-19

1999-02-09

Palys, Joseph E.

Excavating

371 32, G06F 1100

Patent

active

058704060

ABSTRACT:
If no uncorrectable errors are discovered in a received data packet, an acknowledgment is sent back to the sender. Conversely, if the data packet contains uncorrectable errors, no acknowledgment is sent, forcing a re-transmission of that data packet in accordance with an automatic repeat request (ARQ) procedure. In such cases, sets of unquantized signal values relating to received data packets having uncorrectable errors are stored. When two or more sets of unquantized signal values for the same received data packet (as re-transmitted) have been stored, the unquantized signal values are numerically combined on a bit-by-bit basis, and then quantized to regenerate a combined data packet. If no uncorrectable errors are discovered in that combined data packet, an acknowledgment is sent back to the sender. Otherwise, no acknowledgment is sent, forcing another data packet re-transmission.

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Metzner, John J., "Efficient Selective Repeat ARQ Strategies for Very Noisy and Fluctuating Channels", May, 1985, IEEE Transactions on Communications, vol. Com-33, No. 5, pp. 409-416.

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