Relay UE Remote Authorization Signaling Reduction

The patent applies preliminary action by having the relay UE perform authorization verification before forwarding service requests. The relay UE sends an authorization request to the network function and receives an authorization response indicating whether the remote UE is authorized to receive the service. This preliminary check prevents unnecessary signaling and network load that would result from forwarding requests from unauthorized remote UEs.

The patent applies the intermediary principle by introducing a network function as a mediator between the relay UE and the authorization database. The relay UE sends authorization requests to this intermediate network function, which then queries the authorization information and returns the authorization status. This intermediary approach simplifies the overall system architecture compared to having the relay UE directly implement complex authorization logic, while still achieving the goal of reducing network load through preliminary verification.