Data transmission technique for a contention channel

A device for receiving data from a first station at a second station on a contention-based radio channel, the device comprising:

• a processor and a memory, the memory containing one or more programs executable by the processor wherein the device is configured to:
• receive control information including a transmit identifier according to a first transmission format from the first station, the transmit identifier obtained by receiving from the second station a set of transmit identifiers and generating, as the transmit identifier for the first station, at least one of a pseudo-random number from the set of transmit identifiers and a hash value in the set of transmit identifiers;
• maintain, based on the received transmit identifier, a list of transmit identifiers from a set of transmit identifiers;
• and
• receive the data from the first station according to the control information, according to a second transmission format that is different from the first transmission format, wherein the first transmission format relates to a first modulation scheme and/or a first coding scheme and the second transmission format relates to a second modulation scheme and/or a second coding scheme, wherein the data includes a station identifier for the first station, the station identifier or a combination of the station identifier and the transmit identifier being indicative of the first station.

A method of transmitting data from a first station to a second station on a contention-based radio channel, the method comprising or triggering the following steps performed by the first station:

• obtaining a transmit identifier for the first station from a set of transmit identifiers by receiving from the second station the set of transmit identifiers and generating, as the transmit identifier for the first station, at least one of a pseudo-random number from the set of transmit identifiers and a hash value in the set of transmit identifiers;
• transmitting control information including the transmit identifier to the second station according to a first transmission format;
• and
• transmitting the data to the second station according to the control information according to a second transmission format that is different from the first transmission format, wherein the first transmission format relates to a first modulation scheme and/or a first coding scheme and the second transmission format relates to a second modulation scheme and/or a second coding scheme, wherein the data includes a station identifier for the first station, the station identifier or a combination of the station identifier and the transmit identifier being indicative of the first station.

A method of receiving data from a first station at a second station on a contention-based radio channel, the method comprising or triggering the following steps performed by the second station:

• receiving control information including a transmit identifier according to a first transmission format from the first station, the transmit identifier obtained by receiving from the second station a set of transmit identifiers and generating, as the transmit identifier for the first station, at least one of a pseudo-random number from the set of transmit identifiers and a hash value in the set of transmit identifiers;
• maintaining, based on the received transmit identifier, a list of transmit identifiers from a set of transmit identifiers;
• and
• receiving the data from the first station according to the control information according to a second transmission format that is different from the first transmission format, wherein the first transmission format relates to a first modulation scheme and/or a first coding scheme and the second transmission format relates to a second modulation scheme and/or a second coding scheme, wherein the data includes a station identifier for the first station, the station identifier or a combination of the station identifier and the transmit identifier being indicative of the first station.