Method of acknowledging receipt of data packets

Details Method of acknowledging receipt of data packets Method of acknowledging receipt of data packets

2005-10-18

2005-10-18

Lamarre, Guy (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

C370S412000, C370S428000

Reexamination Certificate

active

06957374

ABSTRACT:
A method of acknowledging receipt of data packets, where each data packet has an identification number. A counter is set to the identification number of the first data packet expected. A data packet is then received. If the data precedes the expected data packet then it is discarded. If the data packet has an identification number greater than what is expected and not already stored then it is stored because it is out of order. If the received packet is as expected then it is delivered and the counter is incremented. If the counter equals an identification number of a stored data packet then that packet is delivered along with any other stored data packet contiguous there with, with respect to identification number, the counter is set to one plus the highest identification number of a delivered data packet, and the delivered data packets are deleted from storage. An acknowledgement message is constructed which list the gaps in the stored data packets. Each gap is identified by the first and last identification number of the gap. If additional processing is desired then another data packet is received and processed as above. Otherwise, the acknowledgement message is sent.

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