A system for device trigger delivery in a mobile communication network includes a mobile terminal that is capable of responding to an application layer device trigger, an application layer server that is capable of requesting a new connection establishment from the mobile terminal via device trigger, and a network control entity that is capable of delivering the device trigger through two independent domains and deploying congestion control in these two domain independently. When the mobile terminal decides a new domain connection establishment in response to an application layer device trigger from the application layer server is needed, the mobile terminal triggers an inter domain negotiation to facilitate a connection request to transmit the response to the application layer device trigger.