ACJA Work Task 3 (led by Gerry Libunao from Verzion) have developed the “LTE Aerial Profile document”, published on 04 Nov 2020.
“The LTE Aerial Profile document identifies a minimum mandatory set of features which are defined in 3GPP specifications. Aerial wireless devices (the User Equipment (UE)) and networks are required to implement in order to guarantee an interoperable, LTE aerial service over Long Term Evolution (LTE) radio access. The primary use case considered is UAS, but does not exclude similar uses of 3GPP systems as a method of communication to support commercial applications in low altitude airspace. The profile does not limit anybody, by any means, to deploy other standardized features or optional features, in addition to the defined profile.”