Communication system

Abstract

A communication system in which when judging to have received an RRC message from a communication terminal device, a base station device, for example, HeNB checks an MTCD indicator to be mapped to the received RRC message. Then, when judging that the UE that has transmitted the RRC message received is an MTCD being a device for machine type communication (MTC) from the checked MTCD indicator, the HeNB performs a concentration process on the data from the MTCD to the core network.

1 . A mobile communication system in which a communication terminal device and a base station device mutually perform radio communication, wherein
 when communication cannot be performed between the communication terminal device and the base station device, an upper device is notified by the base station device that the communication cannot be performed.   
     
     
         2 . The mobile communication system according to  claim 1 , wherein the communication terminal device is a communication terminal device for machine-to-machine (M2M) communication. 
     
     
         3 . The mobile communication system according to  claim 1 , wherein when the base station device is changed, the base station device is notified by the upper device that the base station device is changed. 
     
     
         4 . The mobile communication system according to  claim 3 , wherein the base station device is notified of an identification code for identifying the communication terminal device by the upper device while being notified that the base station device is changed. 
     
     
         5 . The mobile communication system according to  claim 3 , wherein when the base station device is notified that the base station device is changed, the base station device finishes communication with the communication terminal device. 
     
     
         6 . A base station device that mutually performs radio communication with a communication terminal device, wherein
 when communication with the communication terminal device cannot be performed, an upper device is notified by the base station device that the communication cannot be performed.   
     
     
         7 . An upper device controlling a base station device mutual performing radio communication with a communication terminal device, wherein
 when communication cannot be performed between the communication terminal device and the base station device, the upper device receives a signal for notifying by the base station that the communication cannot be performed.