Can we broadcast light custom application data using ultra U1 technology without BT/Internet connectivity?

Can we broadcast light custom application data using ultra U1 technology without BT/Internet connectivity?

I have UWB Ultra wideband integrated in my multiple iPhones using which I want to send/receive custom data (very low amount, possibly couple of integers with interval) between two iPhones without requiring any validation (connection establishment). The requirement is similar to broadcasting advertisement message of BT/WiFi. I wonder for UWB if it is possible or not. Any paper or article if feasible?