Triggering terminal handover after session-request message

A telecommunication system, comprising:

• a first entry node of a first access network, the first access network providing wireless communications to a terminal, the first entry node comprising gNodeB, and the first entry node configured to:
• receive a capacity message indicating a network service requested by the terminal and network-capacity requirements associated with the network service;
• determine first network-capacity information associated with the first access network;
• retrieve second network-capacity information from a second entry node, the second entry node and the second network-capacity information associated with a second access network;
• determine whether the network service should be carried by the second access network based at least in part on the network-capacity requirements, the first network-capacity information, and the second network-capacity information;
• and
• if so, trigger a handover of the terminal to the second access network by sending a de-registration message to the terminal via the first entry node based at least in part on information related to the terminal;
• where the first access network comprises a fifth generation (5G) access network and the second access network comprises a Long-Term Evolution (LTE) access network.

A method comprising, by a control unit of a first node of a first access network, performing operations comprising:

• receiving a service-request message associated with a terminal that is registered with the first access network, the service-request message indicating a network service requested by the terminal;
• determining first network-capacity information of the first access network;
• retrieving second network-capacity information of a second access network that is different than the first access network;
• determining, based at least in part on the network service, the first network-capacity information, and the second network-capacity information, that the terminal should be handed over to the second access network;
• and
• in response, triggering a handover of the terminal to the second access network by sending a de-registration message to the terminal via the first node based at least in part on information related to the terminal;
• wherein the first access network comprises a fifth generation (5G) access network. the first node comprises an Access and Mobility Management Function (AMF) of the 5G access network, and the second access network comprises a Long-Term Evolution (LTE) access network.