1. A method, comprising:determining, at a communication device, an identifier of a wireless network with which the communication device is not associated;
while the communication device is not associated with the wireless network, participating, by the communication device, in a ranging procedure with an access point (AP) of the wireless network, wherein:
the ranging procedure is for estimating a distance between the communication device and the AP based on measuring times of flight of transmissions between the communication device and the AP, and
participating in the ranging procedure includes: transmitting, by the communication device, a packet to the AP as part of the ranging procedure, wherein the packet includes a physical layer (PHY) preamble, wherein the PHY preamble includes a signal field, wherein the signal field includes a wireless network identifier subfield set to the identifier of the wireless network, and wherein the identifier of the wireless network comprises a basic service set (BSS) color identifier of a BSS of the wireless network being managed by the AP.