20-08-2015 дата публикации
Номер: US20150237538A1
A method for the switchover of a mobile terminal device from a first radio network of a mobile radio system to a second radio network is described. The switchover is carried out on the basis of a CS fallback mechanism, and whereby, on the basis of the switchover, the mobile terminal device logs on to a base station of the second radio network in order to establish a connection. In conjunction with the log-on, the mobile terminal device transmits a notification pertaining to the CS fallback mechanism to the base station, and the base station registers the log-on of the terminal device as a function of the notification. Moreover, a base station and to a mobile terminal device for carrying out the method are also described herein. 1. A method for switching over a mobile terminal device from a first radio network of a mobile radio system to a second radio network of the mobile radio system , whereby switching over is carried out on the basis of a circuit-switched (CS) fallback mechanism , and whereby , on the basis of switching over , the mobile terminal device logs on to a base station of the second radio network in order to establish a connection , wherein , in conjunction with logging-on , the mobile terminal device transmits a notification to the base station of the second radio network station indicating that the CS fallback mechanism has been used , and the base station registers a log-on of the terminal device as a function of the notification.2. The method according to claim 1 , whereby a checking procedure is carried out to ascertain whether the log-on of the terminal device to the base station of the second radio network is successful claim 1 , and the log-on of the terminal device is registered claim 1 , together with an outcome indicator that is determined as a function of a result of the checking procedure.3. The method according to claim 1 , whereby a base station of the first radio network prompts the terminal device to carry out switching over and claim ...
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