Method and apparatus for transmitting and receiving uncompressed audio/video data and transmission frame structure
First Claim
1. A method of transmitting uncompressed audio and/or video (AV) data, the method comprising:
- determining whether a transmission efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is transmitted;
deciding to use an unequal error protection (UEP) mode when it is determined that the transmission efficiency has dropped below the threshold; and
retransmitting the uncompressed AV data by using the UEP mode,wherein the UEP mode indicates a manner of dividing bits into significant bits and non-significant bits, and the bits constitute the uncompressed AV data, andwherein the retransmitting the uncompressed AV data comprises;
receiving the UEP mode from a reception device; and
retransmitting the uncompressed AV data in accordance with the received UEP mode.
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Accused Products
Abstract
An apparatus for efficiently transmitting and receiving uncompressed AV data by using UEP during high-frequency wireless communication, as well as a transmission frame structure to which the UEP is applied are provided. A method of transmitting uncompressed AV data includes determining whether a transmission efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is transmitted; deciding whether to use a UEP mode if it is determined that the transmission efficiency has dropped below the threshold, the UEP mode indicating a manner of dividing bits, the bits constituting the uncompressed AV data, into significant bits and non-significant bits; and retransmitting the uncompressed AV data by using the UEP mode based on decision regarding use of the UEP mode.
27 Citations
33 Claims
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1. A method of transmitting uncompressed audio and/or video (AV) data, the method comprising:
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determining whether a transmission efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is transmitted; deciding to use an unequal error protection (UEP) mode when it is determined that the transmission efficiency has dropped below the threshold; and retransmitting the uncompressed AV data by using the UEP mode, wherein the UEP mode indicates a manner of dividing bits into significant bits and non-significant bits, and the bits constitute the uncompressed AV data, and wherein the retransmitting the uncompressed AV data comprises; receiving the UEP mode from a reception device; and retransmitting the uncompressed AV data in accordance with the received UEP mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of receiving uncompressed audio and/or video (AV) data, the method comprising:
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determining whether a reception efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is being received; confirming, by a reception device, whether a first unequal error protection (UEP) mode is used for the uncompressed AV data, in response to determining that the reception efficiency has dropped below the threshold; and requesting, by the reception device, retransmission of the uncompressed AV data in response to confirming that the first UEP mode has been used, wherein the first UEP mode indicates a manner of dividing bits into significant bits and non-significant bits, and the bits constitute the uncompressed AV data, and wherein the requesting retransmission of uncompressed AV data comprises transmitting a second UEP mode to the transmission device and requesting the transmission device to retransmit the uncompressed AV data based on the second UEP mode. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus which transmits uncompressed audio and/or video (AV) data, the apparatus comprising:
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a transmission-efficiency-determination unit which determines whether a transmission efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is transmitted; an unequal error protection (UEP) mode decision unit which decides to use a UEP mode when the transmission-efficiency-determination unit determines that the transmission efficiency has dropped below the threshold; a channel coding unit which performs coding of the uncompressed AV data by using the UEP mode; and an RF unit which retransmits the uncompressed AV data coded by the channel coding unit, wherein the first UEP mode indicates a manner of dividing bits into significant bits and non-significant bits, and the bits constitute the uncompressed AV data, and wherein the channel coding unit codes the uncompressed AV data in accordance with the UEP mode received from a reception device, and the RF unit retransmits the uncompressed AV data coded in accordance with the received UEP mode. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An apparatus which receives uncompressed audio and/or video (AV) data, comprising:
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a reception-efficiency-determination unit which determines whether a reception efficiency of uncompressed AV data drops below a threshold while the uncompressed AV data is received; a channel-decoding unit which confirms whether a first unequal error protection (UEP) mode is used for the uncompressed data and decodes the uncompressed AV data in response to the reception-efficiency-determination unit determining that the reception efficiency has dropped below the threshold; and a retransmission request unit which requests retransmission of the uncompressed AV data in response to the channel-decoding unit confirming that the first UEP mode has been used, wherein the first UEP mode indicates a manner of dividing bits into significant bits and non-significant bits, and the bits constitute the uncompressed AV data, and wherein the retransmission request unit transmits a second UEP mode to the transmission device and request the transmission device to retransmit the uncompressed AV data based on the second UEP mode. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A method of transmitting uncompressed audio and/or video (AV) data, the method comprising:
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generating transmission frame structure which transmits the uncompressed AV data; and transmitting the transmission frame structure, wherein the transmission frame structure comprises; a payload which comprises a plurality of transmission data units (TDUs) classified in accordance with significance of bits constituting the uncompressed AV data, the TDUs having been subjected to error-protection coding at a predetermined coding ratio; a media access control (MAC) header added to the payload, a leak adaptation field (LAF) having been set up in the MAC header to code the uncompressed AV data by using a first unequal protection (UEP) mode indicating a manner of dividing bits, the bits constituting the uncompressed AV data, into significant bits and non-significant bits; and a physical (PHY) header added to the MAC header, the PHY header containing information regarding whether the first UEP mode is used, wherein the MAC header contains a UMR field and a UMRI field endowed with an identifier (ID) of the UMR field, the UMR field requesting a reception device to recommend a second UEP mode adapted to a current transmission efficiency, the recommended second UEP mode being used for retransmitting the uncompressed AV data. - View Dependent Claims (30, 31, 32, 33)
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Specification