Techniques for transmitting preambles over an unlicensed radio frequency spectrum band

An apparatus for wireless communication, comprising:

• a processor;
• memory in electronic communication with the processor;
• and
• the processor and the memory configured to:
• detect a communication from a source device in an unlicensed radio frequency spectrum band,
• wherein the communication from the source device includes one or more fields comprising a first transmission indicator associated with a first radio access technology,
• wherein the apparatus uses a second radio access technology to communicate via the unlicensed radio frequency spectrum band;
• determine, based on the one or more fields comprising the first transmission indicator, a source device type of the source device that transmitted the communication in the unlicensed radio frequency spectrum band, wherein the source device type is associated with the first radio access technology or the second radio access technology;
• and
• selectively contend for access to the unlicensed radio frequency spectrum band or selectively transmit via the unlicensed radio frequency spectrum band based on the source device type.

An apparatus for wireless communication, comprising:

• means for detecting a communication from a source device in an unlicensed radio frequency spectrum band,
• wherein the communication from the source device includes one or more fields comprising a first transmission indicator associated with a first radio access technology,
• wherein the apparatus uses a second radio access technology to communicate via the unlicensed radio frequency spectrum band;
• means for determining, based on the one or more fields comprising the first transmission indicator, a source device type of the source device that transmitted the communication in the unlicensed radio frequency spectrum band, wherein the source device type is associated with the first radio access technology or the second radio access technology;
• and
• means for selectively contending for access to the unlicensed radio frequency spectrum band or means for selectively transmitting via the unlicensed radio frequency spectrum band based on the source device type.