A method for wireless communication, comprising: detecting, by a device (105, 115), a communication in an unlicensed radio frequency spectrum band (420, 610), wherein the communication includes a first transmission indicator associated with a first radio access technology, wherein the device (105, 115) uses a second radio access technology to communicate via the unlicensed radio frequency spectrum band (420, 610); determining that an amount of time has passed, since detecting the first transmission indicator, without detecting a second transmission indicator associated with the second radio access technology; determining, by the device (105, 115) and based on the first transmission indicator, a source device type of a source device that transmitted the communication in the unlicensed radio frequency spectrum band (420, 610); wherein determining the source device type comprises determining that the source device type indicates that the source device is a first source device type based on determining that the amount of time has passed without detecting the second transmission indicator; selectively contending, by the device (105, 115), for access to the unlicensed radio frequency spectrum band (420, 610) or selectively transmitting, by the device (105, 115), via the unlicensed radio frequency spectrum band (420, 610) based on the source device type; wherein selectively contending for access to the unlicensed radio frequency spectrum band (420, 610) or selectively transmitting via the unlicensed radio frequency spectrum band (420, 610) comprises waiting to contend for access to the unlicensed radio frequency spectrum band or waiting to transmit via the unlicensed radio frequency spectrum band when it is determined that the source device type indicates that the source device is the first source device type. detecting, by a device (105, 115), a communication in an unlicensed radio frequency spectrum band (420, 610), wherein the communication includes a first transmission indicator associated with a first radio access technology, wherein the device (105, 115) uses a second radio access technology to communicate via the unlicensed radio frequency spectrum band (420, 610); determining that an amount of time has passed, since detecting the first transmission indicator, without detecting a second transmission indicator associated with the second radio access technology; determining, by the device (105, 115) and based on the first transmission indicator, a source device type of a source device that transmitted the communication in the unlicensed radio frequency spectrum band (420, 610); wherein determining the source device type comprises determining that the source device type indicates that the source device is a first source device type based on determining that the amount of time has passed without detecting the second transmission indicator; selectively contending, by the device (105, 115), for access to the unlicensed radio frequency spectrum band (420, 610) or selectively transmitting, by the device (105, 115), via the unlicensed radio frequency spectrum band (420, 610) based on the source device type; wherein selectively contending for access to the unlicensed radio frequency spectrum band (420, 610) or selectively transmitting via the unlicensed radio frequency spectrum band (420, 610) comprises waiting to contend for access to the unlicensed radio frequency spectrum band or waiting to transmit via the unlicensed radio frequency spectrum band when it is determined that the source device type indicates that the source device is the first source device type.