Method and apparatus for re-transmitting MMT packet and method and apparatus for requesting MMT packet re-transmission
First Claim
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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Accused Products
Abstract
The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.
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Citations
19 Claims
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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:
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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; andin response to the delay constrained ARQ flag indicating that the MMT packet transmission apparatus supports a delay-constrained ARQ function receiving 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, and determining whether to transmit the lost packet requested to be re-transmitted based on the updated RTT. - View Dependent Claims (2, 3, 4, 5)
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6. A method of an MPEG media transport (MMT) packet receiving apparatus for requesting re-transmission of a lost packet, the method comprising:
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receiving an MMT packet and an automatic repeat request (ARQ) configuration (AC) message from an MMT packet transmission apparatus, wherein the AC message comprises 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 function generating multiple media fragment units (MFUs) by depacketizing the received MMT packet and processing the depacketized MMT packet, and transmitting an ARQ feedback (AF) message for requesting re-transmission of the lost packet in case the MMT packet is lost during the transmission from the MMT packet transmission apparatus. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A processing method of an MPEG media transport (MMT) packet transmission apparatus for re-transmitting a lost packet, the processing method comprising:
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transmitting an automatic repeat request (ARQ) configuration (AC) message to an MMT packet receiving apparatus, wherein the AC message comprises 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 function receiving 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, and determining whether to transmit the lost packet requested to be re-transmitted using the received timing information. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification