Fault-tolerant data transmission system for networks with non-full-duplex or asymmetric transport
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United States of America Patent
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Aug 25, 2015
Grant Date -
Apr 30, 2015
app pub date -
Oct 28, 2013
filing date -
Oct 28, 2013
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Abstract
In a data transfer method and system for networks having gateway-mediated asymmetric transport, data and feedback channels are established between sender and receiver, along with a gateway feedback channel between gateway and sender. Cohorts of datagrams are transformed using fault-tolerant coding to create chapters whose size correspond to the asymmetric transport's timing. The sender transmits chapters in chunks at a rate to keep the gateway at an optimum fill for maximal throughput without transmit-end packet drops. The receiver reconstructs complete cohorts of original datagrams from a received subset of the transformed datagrams. The receiver acknowledges successfully recovered cohorts and identifies missing or corrupt datagrams of a chapter whenever recovery is unsuccessful. The sender resends sufficient lost datagrams to allow cohort recovery. The sender self-tunes its transmission rate based upon gateway fill, network latency and datagram loss rate to keep datagram loss rate below an upper bound.
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