A. Study of User Cases¶

Use cases 1: Internet Access through wired IP network

The use case 1 consists in providing internet access through wired network. The user must connect its machine to the local area network via a wired cable. For instance the user will connect its machine with an Ethernet cable to the router. The router will furnish a local IP address via DHCP. Finally the user will have access to internet and services as HTTP, SMTP, FTP, Streaming... Since the networking is sharing amongst users, there will be some restrictions on the data rate.

Use cases 2: Internet Access through wireless IP network

The use case 2 consists in providing internet access through wireless network. The user must connect its machine to the local area network through Wi-Fi. The router will furnish a local IP address via DHCP to the user. Nevertheless, the user must be authorized by the administrator to be connected to the network thanks to a logging and a password. In fact the Wi-Fi can be received by anyone around the terminal that is the reason why we must restrict the connection by a password. Finally, after connection, the user will have access to internet and services as HTTP, SMTP, FTP, Streaming... Since the networking is sharing amongst users, there will be some restrictions on the data rate.

Use case 3: Voice over IP

The use case 3 consists in providing a phone call over Internet. The user will dial a number on hardphones available in the flight case. The call will be establish via voice over IP. There are two possibilities, whether it is an internal call, and so the speaker we intend to reach is on the same local network. In this case there should not have too much time delay and the phone call is totally free. Whether it is an external phone call, and there will have at least 400 ms of time delay. It is corresponding to the time the wave takes to travel from the two speakers via the satellite. In this case the phone call is not free, so some restrictions as international call must be establish.