Transmit opportunity detection

An apparatus comprising:

• a receiver configured to receive information corresponding to a primary network, the primary network having a medium shared with a secondary metric;
• a service module to generate a first service metric corresponding to a signal to noise ratio (SNR) of the received information in absence of a perturbation on the medium and to generate a second service metric corresponding to a SNR of the received information in view of a perturbation generated by the apparatus on the network;
• a processor configured to generate a result based on a first comparison of the first service metric and the second service metric and configured to select a transmission parameter based on the result;
• and
• a transmitter configured to transmit information using the secondary network and using the transmission parameter, the transmitter configured to provide the perturbation.