Method and apparatus for maintaining packet ordering with...

Details Method and apparatus for maintaining packet ordering with... Method and apparatus for maintaining packet ordering with...

2005-03-01

2005-03-01

Nguyen, Brian (Department: 2661)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S235000, C370S242000

Reexamination Certificate

active

06862283

ABSTRACT:
A data communication system (10) has a plurality of devices (12, 14, 17) which communicate by transmitting information packets having order tags which are processed by an input unit (60) and an output unit (30) in each device. A packet is sent from a transmitting device to a receiving device having an ordering tag wherein both devices are initially order synchronized by starting with the same ordering tag value. Packet transmissions are forced to occur in an order which follows a predetermined ordering of order values which the ordering tags can have. If the receiving device does not receive a packet having the correct order tag value or if a transmission error is detected, the receiving device tells the transmitting device to resend the packet. Any subsequent outstanding transmissions are discarded. Packet ordering and verification occurs at each device-to-device connection.

REFERENCES:
patent: 5923655 (1999-07-01), Veschi et al.
patent: 6009094 (1999-12-01), Morioka
patent: 6452926 (2002-09-01), Wiklund
patent: 6545981 (2003-04-01), Garcia et al.
patent: 6584111 (2003-06-01), Aweya et al.
patent: 6611521 (2003-08-01), McKay et al.
U.S. Provisional Application 60/175,856, filed by Bryan D. Marietta on Jan. 13, 2000 entitled, Rio Bus Protocol.

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