This Supplement specifies some use cases and the corresponding requirements of satellite communication networks in developing countries, in the context of non-radio aspects of IMT-2020 networks and beyond. This Supplement addresses the following aspects of satellite communications in developing countries, focusing on the non-radio aspects:

• Use cases of satellite communications, which include use cases where there is no land-based network, the land-based network has a low data rate, the land-based network has a low capacity, there is no land-based network of a specific operator and as emergency communications (which could be consistent with some or all of the previous use cases).

• Requirements of satellite communications, which include the service requirements, network capability requirements and security requirements for the above use cases.