The objective of the Gloria (GLobal Reach for Internet for All) study is to assess how multi-layered systems (GEO, LEO, MEO and HAPS (High Altitude Platform Systems)) may be used to fulfil a set of telecommunication missions, from low rate data collection to broadband internet access.
We showed through the analysis of the needs, the definition of the reference scenarios and the assessment of the perceived gaps that no existing GEO or MEO solution could address all the needs. A workshop with different brainstorming sessions was organized to identify possible multi-layer architectures.
A multilayer solution composed of a GEO, a LEO and a HAPS layer was defined and a first dimensioning of the LEO layer was made, leading to a quasi-polar constellation of 170 satellites. Performance and utilization of the HAPS in different part of the system have been assessed, in particular on the user side and the gateway side.
A system simulator was built to evaluate the performance under various conditions (rain, position of the user, type of service, etc…) and assess Key Performance Indicators of the system (coverage, throughput, BER, delay, etc…).