| CPC G01S 17/04 (2020.01) [G01S 7/497 (2013.01); G01S 19/40 (2013.01)] | 14 Claims |

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1. A method of operating a first device related to a second device in a wireless communication system, the method comprising:
receiving a Personal Safety Messages (PSM) message of the second device by the first device;
determining a position information of the second device by the first device; and
transmitting the position information of the second device to the second device by the first device,
wherein the position information is determined based on a first position information of the second device obtained through an image information and a second position information of the second device obtained through the PSM message,
wherein the image information is taken by the first device in an observation area so as to be shared with another first device.
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