Patent ID: 9667625
Date: 2017-05-30
CPC Classifications: H04L

Claim:
1. An access control method of an area restricted network system including a central control device that allows access to any resource in one or more area restricted networks, each area restricted network amongst the area restricted networks including at least a master node, and an area restriction signal transmission device which is associated with the master node in the corresponding area restricted network and broadcasts an area restriction signal for restricting the corresponding area restricted network, the access control method comprising: (a) detecting that an access device has entered into a first area restricted network in the area restricted network system, and sending, by the area restriction signal transmission device, a response to a connection request from the access device upon detecting that the access device has entered into the first area restricted network, and establishing a connection between the area restriction signal transmission device and the access device; (b) forwarding by the area restriction signal transmission device to the associated master node in the first area restricted network, an authentication information request received by the area restriction signal transmission device from the access device, the authentication information request being used to request authentication information for the access device from the master node; (c) forwarding, by the area restriction signal transmission device to the access device, authentication information from the master node, in response to the authentication information request; and (d) performing authentication of the access device, by the central control device in response to an authentication request from the access device, based on the authentication information obtained by the access device via the area restriction signal transmission device from the master node, the access device being permitted to simultaneously access the first area restricted network and another network which is external to the system, after authentication.