Training field assisted medium sensing across multiple radio access technologies

A method for wireless communication, comprising:

• monitoring a channel in a shared radio frequency spectrum using a first energy detection threshold to determine an availability of the channel for a transmission using a first radio access technology (RAT);
• receiving a training field on the channel based at least in part on the monitoring;
• determining whether the training field is associated with the first RAT or a second RAT;
• identifying a second energy detection threshold for monitoring the channel based at least in part on the determining;
• and
• monitoring the channel using the second energy detection threshold to determine the availability of the channel for the transmission using the first RAT.

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled to the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• identify, at a first wireless device, information to transmit to a second wireless device via a channel in a shared radio frequency spectrum using a first radio access technology (RAT), the first RAT associated with a first numerology;
• generate a cross-RAT training field using the first numerology, the cross-RAT training field having an autocorrelation property, the autocorrelation property associated with a set of subcarriers and a repetition period of a training field for a second RAT associated with a second numerology;
• and
• transmit the cross-RAT training field on the channel to reserve the channel for transmitting the information.

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled to the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• monitor a channel in a shared radio frequency spectrum using a first energy detection threshold to determine an availability of the channel for a transmission using a first radio access technology (RAT);
• receive a training field on the channel based at least in part on the monitoring;
• determine whether the training field is associated with the first RAT or a second RAT;
• identify a second energy detection threshold for monitoring the channel based at least in part on the determining;
• and
• monitor the channel using the second energy detection threshold to determine the availability of the channel for the transmission using the first RAT.