Taking into account the contents of the received communication, INMARSAT was requested to provide additional clarifications, by email dated 5 August 2014, on (i) ITU designation of the Inmarsat S satellite, to be used for this service provision, as well as orbital position and respective date of entry into service; (ii) effective coverage of the national territory, as well as geographic and population coverage rates; (iii) service performance, namely as regards the number of simultaneous users (speed over 64 kbps in each direction) and overall uplink speed.
On 22 August 2014, INMARSAT provided by email the requested clarifications on the ITU designation of the Inmarsat S satellite to be used for this service provision, as well as on the effective coverage of the national territory, providing the geographic and population coverage rates. As far as this last issue is concerned, INMARSAT indicated 100% coverage for both parameters.
By email dated 28 August 2014, INMARSAT requested clarifications on the third issue raised by ANACOM, namely on the meaning of the terms “number of simultaneous users” and “overall uplink speed”.
ANACOM clarified, by email of 1 September 2014, that the Authority intended to know the “theoretical” number of users that could simultaneously access INMARSAT’s services, at speed rates of 64 kbps (or more) in each direction, taking into account the available bandwidth for this system (2x15 MHz). It further clarified that “overall uplink speed” means “overall throughput (or transmission rate) on the uplink”.
By email of 18 September 2014, INMARSAT confirmed that the “theoretical” number of users that could simultaneously access the company’s services (at speed rates equal to or greater than 64 kbps in each direction, taking into account the available bandwidth for this system), in line with the information indicated in its “White Book”, is 180 000, and could be as high as 200 000, depending on the implementation of the CGC station network.
Finally, by email of 21 October 2014, INMARSAT added that the spectral efficiency would be in the order of 600 Mbps/MHz, assuming the installation of 100 CGC under a satellite beam.
