A V2X COMMUNICATION SYSTEM WITH RADAR FUNCTIONALITY

1 . A radio transceiver for communicating with one or more transceiver equipped targets, the transceiver comprising;

a transmitter for transmitting radio signals in a transmit frequency band, wherein the transmitter is arranged to transmit a data signal in case a transceiver equipped target is present and to transmit a dummy signal at least in case a transceiver equipped target is not present,

a receiver for receiving radio signals in a receive frequency band, and

a detector for detecting backscattered radio signals in the transmit frequency band, wherein the detector is arranged to estimate a distance to at least one target object based on the backscattered radio signals.

2 . The radio transceiver according to claim 1 , wherein the transmitter and the receiver are part of one of a third generation partnership, a 3GPP, and a side-link communication system.

3 . The radio transceiver according to claim 1 , wherein the transmitted radio frequency signals and the received radio frequency signals are orthogonal frequency division multiplex signals.

4 . The radio transceiver according to claim 1 , wherein the transmitted radio frequency signals and the received radio frequency signals are single carrier frequency division multiplex, signals.

5 . The radio transceiver according to claim 1 , arranged to obtain a time-frequency resource assignment for transmission of the dummy signal from a central coordinating entity.

6 . The radio transceiver according to claim 1 , configured to obtain resource blocks for transmitting radio signals in the transmit frequency band in dependence of a required radar performance.

7 . The radio transceiver according to claim 6 , wherein the required radar performance comprises an update rate, and wherein the resource blocks are requested with a time spacing in dependence of the update rate.

8 . The radio transceiver according to claim 6 , wherein the required radar performance comprises a distance resolution, and wherein the resource blocks are requested with a total bandwidth in the transmit frequency band in dependence of the distance resolution.

9 . The radio transceiver according to claim 1 , comprising a plurality of the transmitters, the receivers, and the detectors configured with antennas having different main lobe pointing directions.

10 . The radio transceiver according to claim 1 , arranged to associate a received radio signal in the receive frequency band with a detected backscattered radio signals in the transmit frequency band.

11 . A vehicle comprising the radio transceiver according to claim 1 .

12 . The vehicle according to claim 11 , wherein the radio transceiver is arranged on a bottom section of the vehicle.

13 . Use of a third generation partnership program sidelink transceiver for Radar.

14 . A method in a radio transceiver for communicating with one or more transceiver equipped targets, the method comprising the steps of;

transmitting radio signals in a transmit frequency band, wherein the transmitting comprises transmitting a data signal in case a transceiver

equipped target is present and transmitting a dummy signal in case a transceiver equipped target is not present,

receiving radio signals in a receive frequency band,

detecting backscattered radio signals in the transmit frequency band, and

estimating a distance to at least one target object based on the detected backscattered radio signals.

15 . A computer program product comprising program code for performing the steps of claim 14 when the program is run on a computer.