Patent ID: 11892823
Assignee: ABB SCHWEIZ AG
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of setting up communication between a first and a second wireless communication device of an industrial automation system via a cellular network, the method being performed in the first wireless communication device and comprising the steps of:
receiving, while the first wireless communication device is attached to a first base station of the cellular network, a first message from the second wireless communication device via the first base station, said first message including information identifying a particular base station of the cellular network to which the second wireless communication device is attached,
investigating the information of the first message in order to identify said particular base station to which the second wireless communication device is attached,
if said particular base station to which the second wireless communication device is attached is a second base station different from the first base station, then further performing the steps of:
investigating if one or more conditions for attaching to the second base station are fulfilled by the first wireless communication device, wherein one condition is that the second base station is allowable, and
sending a response to the first message concerning the ability of the first wireless communication device to attach to the second base station,

wherein if said one or more conditions are fulfilled, the method further includes,
detaching from the first base station, and
attaching to the second base station.