Patent ID: 9130750
Filing Date: 2015-09-08
Classification: H04B,H04L

Abstract:
1. A system for efficient retransmission over a satellite network comprising: a satellite; and a plurality of Very Small Aperture Terminals (VSATs); wherein the satellite is configured to transmit data packets to the plurality of VSATs, receive retransmission requests for packets from the plurality of VSATs, generate retransmission packets based on exclusive OR (XOR) sums of the requested packets, and transmit the retransmission packets to the plurality of VSATs, and wherein the plurality of VSATs are configured to receive the data packets from the satellite, transmit the retransmission requests for the packets to the satellite, receive the retransmission packets, and recover the requested packets based on subtraction using XOR of at least one of the received data packets from the retransmission packets and if the another data packet requested by the VSAT has been XOR summed into the retransmission packet, not XOR summing the data packet requested for retransmission into the retransmission packet.