Summary - Y.3212 (09/2024) - Fixed, mobile and satellite convergence � Requirements for supporting high-altitude platforms for IMT-2020 networks and beyond

A high-altitude platform (HAP) is located on an object at an operational altitude of 18 to 50�kilometres and provides network functions of access network, control plane, user plane, and application services. The HAP can provide communication services to end users cooperating with fixed, mobile and satellite convergence (FMSC), which is the capability that provides services and applications to end users regardless of the fixed, mobile or satellite access technologies being used. Recommendation ITU-T Y.3212 specifies the requirements of supporting HAPs for FMSC for IMT-2020 networks and beyond, focusing on scenarios, requirements, and security considerations.