Transmitting Data in Unlicensed Spectrum

A method in a wireless device of transmitting data on a first channel in unlicensed spectrum, the method comprising:

• determining that a transmitter is transmitting a first signal on the first channel in unlicensed spectrum;
• transmitting a second signal to cause the transmitter to cease transmitting the first signal;
• and
• transmitting the data on the first channel in unlicensed spectrum.

A non-transitory computer-readable medium comprising, stored thereupon, a computer program comprising instructions configured so that, when executed on at least one processor of a wireless device, the instructions cause the wireless device to:

• determine that a transmitter is transmitting a first signal on a first channel in unlicensed spectrum;
• transmit a second signal to cause the transmitter to cease transmitting the first signal;
• and
• transmit data on the first channel in unlicensed spectrum.

An apparatus in a wireless device for transmitting data on a first channel in unlicensed spectrum, the apparatus comprising a processor and a memory, the memory containing instructions executable by the processor such that the apparatus is operable to:

• determine that a transmitter is transmitting a first signal on the first channel in unlicensed spectrum;
• transmit a second signal to cause the transmitter to cease transmitting the first signal;
• and
• transmit the data on the first channel in unlicensed spectrum.