Method and system for a low-latency audio transmission in a mobile communications network

A wireless microphone or wireless pocket transmitter that is configured to operate as a mobile terminal in a mobile communications network, comprising:

• a first encoding unit configured to encode data to be transmitted by the terminal in accordance with a first format used in the mobile communications network;
• wherein the first format uses first data frames and the terminal encodes the data frame-wise in accordance with the first data frames, and wherein encoding of the data of a first data frame is influenced by data of the same first data frame being encoded but not by data of other first data frames;
• a high-frequency modulation unit for modulation of the data encoded in accordance with the first format in accordance with a modulation method used in the mobile communications network, wherein the modulated data are transmitted by way of a terminal uplink;
• a second encoding unit configured to obtain audio data from a microphone unit and encode the obtained audio data in accordance with a second format, wherein in accordance with the second format the first data frames are divided into an integer number of second data frames, and wherein the second data frames are shorter than the first data frames and contain the audio data encoded in accordance with the second format and wherein encoding of the audio data of each of the second data frames is influenced by audio data of the same second data frame being encoded but not by audio data of another second data frame;
• and
• wherein the high-frequency modulation unit is adapted to modulate the audio data encoded in accordance with the second format in accordance with the modulation method used in the mobile communications network, wherein the modulated audio data are also transmitted by way of the terminal uplink.

A wireless receiver that is configured to operate in a mobile communications network, comprising:

• a high-frequency demodulation unit configured to demodulate received data in accordance with a demodulation method that is used in the mobile communications network, wherein demodulated data are obtained, which are encoded either in accordance with a first format used in the mobile communications network or in accordance with another second format, wherein the same demodulation and the same high-frequency range are used independently of the encoding format;
• a first decoding unit configured to decode those data demodulated by the high-frequency demodulation unit, that are encoded in accordance with the first format used in the mobile communications network;
• wherein the first format uses first data frames and the first decoding unit decodes the data frame-wise in accordance with the first data frames, and wherein decoding of the data of a first data frame is influenced by other data of the same first data frame being decoded but not by data of other first data frames;
• a second decoding unit configured to decode those data which are demodulated by the high-frequency demodulation unit, that are encoded in accordance with the second format;
• wherein in accordance with the second format the first data frames are divided into an integer number of second data frames and wherein the second data frames are shorter than the first data frames and contain audio data encoded in accordance with the second format, and wherein decoding of the audio data of a second data frame are influenced by other audio data of the same second data frame being decoded but not by audio data of another second data frame;
• and
• wherein the second decoding unit decodes each of the second data frames immediately after they are obtained and outputs the audio data obtained in that case.

An audio transmission system comprising:

• at least one wireless microphone or wireless pocket transmitter operating as a terminal in a mobile communications network, comprising:
• a first encoding unit configured to encode data to be transmitted by the terminal in accordance with a first format used in the mobile communications network;
• wherein the first format uses first data frames and the terminal encodes the data frame-wise in accordance with the first data frames, and wherein encoding of the data of a first data frame is influenced by data of the same first data frame being encoded but not by data of other first data frames;
• a high-frequency modulation unit for modulation of the data encoded in accordance with the first format in accordance with a modulation method used in the mobile communications network, wherein the modulated data are transmitted by way of a terminal uplink;
• a second encoding unit configured to obtain audio data from a microphone unit and encode the obtained audio data in accordance with a second format, wherein in accordance with the second format the first data frames are divided into an integer number of second data frames, and wherein the second data frames are shorter than the first data frames and contain the audio data encoded in accordance with the second format and wherein encoding of the audio data of each of the second data frames is influenced by audio data of the same second data frame being encoded but not by audio data of another second data frame;
• and
• wherein the high-frequency modulation unit is adapted to modulate the audio data encoded in accordance with the second format in accordance with the modulation method used in the mobile communications network, wherein the modulated audio data are also transmitted by way of the terminal uplink;
• a base station;
• and
• an audio receiver that is configured to operate in the mobile communications network, comprising:
• a high-frequency demodulation unit configured to demodulate received data in accordance with a demodulation method that is used in the mobile communications network, wherein demodulated data are obtained, which are encoded either in accordance with the first format or in accordance with the second format, wherein the same demodulation and the same high-frequency range are used independently of the encoding format;
• a first decoding unit configured to decode those data demodulated by the high-frequency demodulation unit, that are encoded in accordance with the first format used in the mobile communications network;
• wherein the first decoding unit decodes the data frame-wise in accordance with the first data frames, and wherein decoding of the data of a first data frame is influenced by other data of the same first data frame being decoded but not by data of other first data frames;
• a second decoding unit configured to decode those data which are demodulated by the high-frequency demodulation unit, that are encoded in accordance with the second format;
• wherein decoding of the audio data of a second data frame are influenced by other audio data of the same second data frame being decoded but not by audio data of another second data frame;
• and
• wherein the second decoding unit decodes each of the second data frames immediately after they are obtained and outputs the audio data obtained in that case,
• wherein the terminal is adapted to transmit data by way of the terminal uplink in a waveform which is in conformity with a waveform used in the mobile communications network;
• wherein the base station allocates to the terminal frequencies and time slots for transmission of the first frames;
• and
• wherein the terminal uses the allocated frequencies and time slots for transmitting both the first frames encoded in accordance with the first format and also the second frames encoded in accordance with the second format.