| CPC H04W 72/30 (2023.01) [H04W 4/70 (2018.02); H04W 28/0205 (2013.01); H04W 68/12 (2013.01); H04W 28/10 (2013.01); H04W 72/1263 (2013.01); H04W 84/045 (2013.01)] | 6 Claims |

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1. A communication system, which comprises a communication terminal device, a base station device performing radio communication with the communication terminal device, and a base station controller controlling the base station device, wherein
the communication terminal device is a machine type communication (MTC) device,
the base station controller includes a mobility management entity (MME), and
data is transmitted to the MME from the communication terminal device via the base station device using non-access stratum (NAS) signalings.
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