Efficient, fault-tolerant multicast networks via network coding

摘要

Fault-tolerant multicast networks via network coding comprises a digital signal operator that combines data signals multicast from multiple sources and transmits the combined data signal via a link to the next or destination node. In one aspect, the digital signal operator includes an exclusive-OR operator that performs a Boolean exclusive-OR function on the received bit streams of the multicast data from the plurality of sources.

主权项

1. A method for providing a fault-tolerant digital multicast all-optical network that transports and routes signals completely in an optical domain, comprising:
receiving at a node having a digital operator, first data multicast from a first source to at least a first receiving node and a second receiving node; receiving at the node second data multicast from a second source to at least the first receiving node and the second receiving node; combining the first data and the second data using the digital operator at the node; sending combined first data and second data at least to the first receiving node via a link between the node and the first receiving node; buffering the second data and the combined first data and second data at the first receiving node; and recovering the first data by performing a decoding function on buffered second data and buffered combined first data and second data at the first receiving node;
wherein the node, the first source, the second source, the first receiving node and the second receiving node are nodes of the all-optical network which maintain the signals as light from input to output without optical-electrical-optical (OEO) conversion.