Timing Advance Measurements in LTE and 5G: Frequency, Triggers, and Use Cases

Hello all,

In LTE and 5G, how often is a Timing Advance measurement being taken by the BTS and UE? Is it only occuring during a registration or RACH? TELCOMs are documenting some of this information in their historical records. I am curious to see how complete the document is.

What prompts a timing advance measurement to be taken? The network, the UE, both? Are these measurements being taken during a connected session?

Thank you for your time and assistance.