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Method and apparatus for re-transmitting MMT packet and method and apparatus for requesting MMT packet re-transmission

  • US 10,097,319 B2
  • Filed: 01/06/2015
  • Issued: 10/09/2018
  • Est. Priority Date: 01/09/2014
  • Status: Active Grant
First Claim
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1. A method of an MPEG media transport (MMT) packet transmission apparatus for re-transmitting a lost packet, the method comprising:

  • generating an MMT packet by processing multiple media fragment units (MFUs);

    transmitting the generated MMT packet to an MMT packet receiving apparatus;

    transmitting to the MMT packet receiving apparatus an automatic repeat request (ARQ) configuration (AC) message comprising a delay_constrained_ARQ_flag to indicate whether the MMT packet transmission apparatus supports a delay-constrained ARQ function; and

    in response to the delay constrained ARQ flag indicating that the MMT packet transmission apparatus supports a delay-constrained ARQ functionreceiving an ARQ feedback (AF) message from the MMT packet receiving apparatus to request re-transmission of the lost packet, wherein the AF message comprises timing information,updating a round-trip time (RTT) based on the timing information, anddetermining whether to transmit the lost packet requested to be re-transmitted based on the updated RTT.

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