Lucent Technologies Inc.

At+t Corp.

Robert Francis Shaw

Ronald A Spanke

Diana L Lorenz

A high bandwidth gateway comprises a source of packet traffic wherein received packets are stored in a buffer, a destination interface circuit for the packets, a microprocessor and a bus that interconnects the components. The microprocessor, which in the prior art controls data transfers, periodically gives up control to a hardware assist engine. The hardware assist engine detects the presence of packets in the source buffer and causes the source buffer to output one or more packets to the destination directly, thus by-passing the microprocessor completely. By this system, bandwidth is improved by the source and the destination working together directly, without having the overhead associated with microprocessor-based or initiated data transfers.

System and method for increasing throughput of inter-network gateways

A system and method that controls node congestion in a packet switching network by allowing the congested node to seize control of transmission on the packet switching network and not relinquishing control until it has drained its buffer of the backlog of packets. In response to the node's buffer reaching a predetermined occupancy level, the node requests from the network's arbiter for exclusive transmission rights on the network. When the node receives transmission rights, the node continues to process packets in the buffer. When the occupancy of the buffer reaches a second predetermined threshold, the node releases the transmission right, and thus permits other nodes to transmit packets to it (and to other nodes) again.

Method for avoiding node overload in a packet switching network

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Clinton, NJ, United States of America

Robert Francis Shaw