Process and system for migrating satellite networks to 3GPP 5G architecture
A satellite terminal satellite exchanges data with a 5G core network of a cellular wireless network by obtaining an internet protocol (IP) address using a router or switch and a gateway. The IP address is obtained using dynamic host configuration protocol (DHCP). The router or switch and the gateway are positioned between a satellite teleport and the core network. The data is sent as packets with the IP address being the source address of the satellite terminal. As such, a legacy satellite terminal, with addition of a DHCP client, is able to access services of the 5G core network.
1. A system comprising:
a satellite terminal configured to implement a first dynamic host configuration protocol (DHCP) layer and a first internet protocol (IP) layer;
a satellite;
a teleport switch configured to implement a second DHCP layer;
a gateway configured to implement a third DHCP layer, and communicate with a cellular core network node of a 5G cellular network, wherein the cellular core network node is configured to implement a second IP layer,
wherein the satellite terminal is configured to transmit a request, via the satellite, for an IP address from the gateway,
the teleport switch generates, based on the request from the satellite terminal, a first request message, wherein the first request message includes information about a network location of the satellite terminal,
the gateway:
requests, with a second request message, the IP address from the cellular core network node,
receives the IP address from the cellular core network node, and
sends the IP address to the satellite terminal, and
the satellite terminal sends, via the first IP layer to the second IP layer, first packets bearing first user content to the cellular network using the IP address as a source address, and receives, via the first IP layer from the second IP layer, second packets bearing second user content from the cellular network, the second packets identifying the IP address as a destination address,
wherein the teleport switch is further configured to:
insert a first identifier of the satellite terminal in a DHCP option 82 remote_id field of the first request message, and send the first request message to the gateway,
the gateway receives the first request message, generates a second identifier as a network specific identifier (NSI) based on the first identifier, requests the IP address using the second request message by sending the second identifier to the cellular core network node, and receives the IP address from a Session Management Function (SMF) of the cellular core network node.
2. The system of claim 1 , wherein the first identifier is a MAC address of the satellite terminal.
3. The system of claim 2 , wherein the second identifier is a subscription permanent identifier (SUPI).