Is there a way to increase the frequency of UWB background ranging?

Dear Apple： We are developing an app for file sharing between mobile devices. We want to create an iOS app that can continue sharing files with other devices even when it is running in the background. We are using WLAN channels for file sharing. Could you please advise on which background persistence measures we should use to ensure the iOS app can maintain file transfer when it goes to the background? Thank you.

I am trying on iOS 16.1.1 the Nearby Interaction framework. I am testing it on two iPhones 14 Pro Max. The supportsDirectionMeasurement property returns false (!) and the direction property on the NINearbyObjects is nil. Has someone experienced the same issue?