| 摘要 |
A system for providing electric energy to users includes a server node (100), a set of supply nodes (131, 132, 13n) and a set of mobile terminals (180). One or more communication networks (120) connect the server node (100) to the supply nodes (131, 132, 13n). Each supply node (131, 132, 13n) receives electric energy from an external power source and provides output energy via a remote-controlled outlet. Each mobile terminal (180) communicates with the server node (100) over a wireless interface (185). The supply nodes (131, 132, 13n) repeatedly send respective instruction inquiries (IN-INQ1, IN-INQ2, IN-INQn) to the server node (100). The server node (100) receives activation requests (ACT-REQ1) from the mobile terminals (180). Each activation request (ACT-REQ1) specifies a particular outlets (141 ) and an identity (IDU) of a mobile-terminal user. In response to an activation request (ACT-REQ1), the server node (100) checks if the user identity (IDU) is authorized to activate the outlet (141 ), and if so; in response to an instruction inquiry (IN-INQ1 ) from a first supply node (131) associated with the outlet (141 ), sends an activation accept (ACT-ACC1) to the first supply node (131) enabling output of electric energy from the outlet (141). |
