XOR retransmission in multicast error recovery

A growing number of network applications require the use of a reliable multicast protocol to disseminate data from a source to a potentially large number of receivers. We present a new error recovery mechanism, called XOR, which is based on the selective repeat ARQ protocols. The idea is to combine several NACKed packets by XORing them. The analytical and simulative result show that XOR achieves a better throughput than both 'N1' and 'N2' do.