Lucent Technologies Inc.

At&t Bell Laboratories

Krishnan Padmanabhan

Arun Narayan Netravali

Arun N Netravali

W Steven Lo

A system for correcting errors in the transmission of data packets between a source and a receiver. The source sends data packets to the client unit and server unit. The system uses the client unit and the server unit to send a repaired packet stream to a receiver when an error is detected. The client unit detects errors in the packet stream and sends retransmission requests of the lost data packets to the server unit. The server unit retransmits the lost data packet to the client unit, which then corrects the packet stream by inserting the lost packet into the proper time order and transmitting the repaired packet stream to the receiver.

Error correction system for packet switching networks

A method for realizing, and a structure for implementing a switching network employing 2.times.2 switches. The network is dilated in that none of the 2.times.2 switches concurrently carry an active signal. The method for realizing such a network alters a given non-dilated network by replacing each 2.times.2 switch in the non-dilated network with a dual rail switch having a pair of 2.times.2 interconnected switches, and by replacing each link in the non-dilated network with a pair links. The final output of the dilated network is obtained by adding a combiner final stage which combines the pairs of signals to form output signals that parallel the output signals of the given non-dilated network.

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New Providence, NJ, United States of America

Krishnan Padmanabhan