Data services retransmission procedure

Details Data services retransmission procedure Data services retransmission procedure

1991-10-31

1993-06-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 60, H04J 314, G08C 2500

Patent

active

052220613

ABSTRACT:
A facility is provided for use in a packet switch to control unnecessary multiple retransmissions of a data packet. In an exemplary embodiment of the invention, such control is achieved by tracking in a list the sequence numbers of transmitted data packets and retransmitting a data packet only if its sequence number appears in the list prior to the sequence number of the last data packet that is received correctly by a receiver. The sequence number associated with a retransmitted data packet is deleted from the list and then appended to the list to place the number in proper relationship with the sequence numbers of data packets transmitted after the initial transmission of the retransmitted data packet.

REFERENCES:
patent: 3876979 (1975-04-01), Winn et al.
patent: 4439859 (1984-03-01), Donnan
patent: 4712214 (1987-12-01), Meltzer et al.
patent: 4928096 (1990-05-01), Leonardo et al.
patent: 4975952 (1990-12-01), Mabey et al.
patent: 5036518 (1991-07-01), Tseung
patent: 5084877 (1992-01-01), Netravali et al.

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