UE passive RF sensing with cellular-based bistatic/multistatic radar

A mobile device comprising:

• a wireless communication interface;
• a memory;
• and
• one or more processing units communicatively coupled with the wireless communication interface and the memory and configured to:
• receive, via the wireless communication interface, a configuration from a server, wherein the configuration includes timing information for each of one or more wireless reference signals transmitted by a network entity of a wireless communications network;
• determine, based on the configuration:
• a first Time of Arrival (ToA) of a Line-Of-Sight (LOS) wireless signal at the mobile device, wherein the LOS wireless signal comprises a first wireless reference signal of the one or more wireless reference signals;
• and
• a second ToA of an echo signal at the mobile device, wherein the echo signal comprises a reflection, from an object, of a second wireless reference signal of the one or more wireless reference signals;
• determine a position of the mobile device relative to the network entity;
• determine a position of the object based on:
• a time difference between the first ToA and the second ToA,
• a difference between a time the network entity transmits the first wireless reference signal and a time the network entity transmits the second wireless reference signal, and
• the position of the mobile device relative to the network entity;
• and
• provide the position of the object with the mobile device.

A device comprising:

• means for receiving a configuration from a server, wherein the configuration includes timing information for each of one or more wireless reference signals transmitted by a network entity of a wireless communications network;
• means for determining, based on the configuration:
• a first Time of Arrival (ToA) of a Line-Of-Sight (LOS) wireless signal at the device, wherein the LOS wireless signal comprises a first wireless reference signal of the one or more wireless reference signals;
• and
• a second ToA of an echo signal at the device, wherein the echo signal comprises a reflection, from an object, of a second wireless reference signal of the one or more wireless reference signals;
• means for determining a position of the device relative to the network entity;
• means for determining a position of the object based on:
• a time difference between the first ToA and the second ToA,
• a difference between a time the network entity transmits the first wireless reference signal and a time the network entity transmits the second wireless reference signal, and
• the position of the device relative to the network entity;
• and
• means for providing the position of the object with the device.

A non-transitory computer-readable medium storing instructions for performing radio frequency (RF) sensing with a mobile device in a wireless communications network, the instructions comprising code for:

• receiving a configuration from a server, wherein the configuration includes timing information for each of one or more wireless reference signals transmitted by a network entity of the wireless communications network;
• determining, based on the configuration:
• a first Time of Arrival (ToA) of a Line-Of-Sight (LOS) wireless signal at the mobile device, wherein the LOS wireless signal comprises a first wireless reference signal of the one or more wireless reference signals;
• and
• a second ToA of an echo signal at the mobile device, wherein the echo signal comprises a reflection, from an object, of a second wireless reference signal of the one or more wireless reference signals;
• determining a position of the mobile device relative to the network entity;
• determining a position of the object based on:
• a time difference between the first ToA and the second ToA,
• a difference between a time the network entity transmits the first wireless reference signal and a time the network entity transmits the second wireless reference signal, and
• the position of the mobile device relative to the network entity;
• and
• providing the position of the object with the mobile device.