Mobile communication system, mme, sgsn, terminal, and a communication method

A communication system in which the rapid increase in traffic volume of a particular communication terminal groups to eliminate the adverse effects on the quality of the other communication terminals, a base station, to provide a communication method and a program. A communication system according to the present invention includes a communication terminal 40, and a node device 13 to select a gateway apparatus 11 for performing communication terminal 40 and the data communication. Furthermore, the communication system includes on the basis of the identifier included in the connection request message transmitted from the communication terminal 40, the base station 30 to select a node device 13, the. .FIELD 8