As part of Rel-17, TS 23.255 specified the overall application layer architecture to enable application support for UAS applications over 3GPP networks, generic support for UAS applications were specified in the SEAL layer as outlined in TS 23.434, while general UAS-related aspects for the 3GPP-architecture were specified in TS 23.256. In Rel-18, the UAS application layer architecture requires enhancements to further improve and enhance functionality in 3GPP for improved support assisting the aviation industry.

The present document analyze requirements and identify key issues and develop potential enhancements to the UAS application architecture. The study includes identification of potential enhancements to the UAS architecture, potential enhancements to the Service Enabler Architecture Layer (SEAL) and corresponding application requirements. The study bases its work on the existing stage 1 work within 3GPP related to UAS as specified in TS 22.125. The conclusions of the study will be aligned with TR 23.700-58. The recommendations from the study include solutions for the UAS architecture and SEAL that will be considered for normative work.

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

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