Detection of pedestrian using radio devices

A method comprising:

• transmitting, using a single short-range wireless transmission radio technology, a device-discovery radio signal all frequency channels of the single short-range wireless transmission radio technology, wherein the device-discovery radio signal is transmitted without waiting for a response signal, and wherein the device-discovery radio signal comprises a request for any nearby devices to transmit a responsive radio signal,
• receiving, using the single short-range wireless transmission radio technology and in response to the device-discovery radio signal, the responsive radio signal on at least one of the frequency channels;
• receiving optical data indicating an object near a vehicle;
• analyzing the optical data to determine an identification of the object;
• in response to not having a high confidence as to the identification of the object, analyzing the received responsive radio signal to determine whether the received responsive radio signal was received from a cellphone of a pedestrian;
• based on determining that the received responsive radio signal was received from the cell phone of the pedestrian, confirming the identification of the object;
• and
• altering a control of an apparatus based on confirming the identification of the object.

An article of manufacture including a non-transitory computer-readable medium having stored thereon program instructions that, if executed by a processor in a radio system, cause the radio system to perform operations comprising:

• transmitting, using a single short-range wireless transmission radio technology, a device-discovery radio signal on all frequency channels of the single short-range wireless transmission radio technology, wherein the device-discovery radio signal is transmitted without waiting for a response signal, and wherein the device-discovery radio signal comprises a request for any nearby devices to transmit a responsive radio signal,
• receiving, using the single short-range wireless transmission radio technology and in response to the device-discovery radio signal, the responsive radio signal on at least one of the frequency channels;
• receiving optical data indicating an object near a vehicle;
• analyzing the optical data to determine an identification of the object;
• in response to not having a high confidence as to the identification of the object, analyzing the received responsive radio signal to determine whether the received responsive radio signal was received from a cellphone of a pedestrian;
• based on determining that the received responsive radio signal was received from the cell phone of the pedestrian, confirming the identification of the object;
• and
• altering a control of an apparatus based on confirming the identification of the object.