A communication system in which communication traffic is routed according to a type of device that has originated the communication traffic, the system comprising: one or more communication terminals (1A, 1B) that are adapted to transmit information relating to a device type attribute that indicates the type of device of the communication terminal with a first message for requesting connection to a wireless network; a first base station that is adapted to receive, from the communication terminal (1A, 1B), the first message including the information relating to the device type attribute; a second base station that is adapted to receive the communication traffic of a Machine Type Communication, MTC, device as the communication terminal by setting parameters therein corresponding to the MTC device; a virtual Mobile Management Entity, MME, that is realized by software of a virtual machine and connected to the second base station, and that is adapted to process the communication traffic of the MTC device, and to be activated dynamically according to a state of the communication traffic of the MTC device; a communication device that is adapted to receive a second message transmitted from the first base station, identify the device type attribute of the communication terminal (1A, 1B) based on an identification policy that is dynamically changed and information relating to the device type attribute included in the second message, control a connection for the communication terminal (1A, 1B) based on a predetermined control policy relating to the identified device type attribute, start processing for establishing a communication session between the communication terminal and a network node when the identified device type attribute indicates a non-MTC device, and transmit a switching instruction message instructing a base station switching to the communication terminal when the identified device type attribute indicates the MTC device; and wherein the communication terminal is adapted to transmit the first message to the second base station upon receiving the switching instruction message. one or more communication terminals (1A, 1B) that are adapted to transmit information relating to a device type attribute that indicates the type of device of the communication terminal with a first message for requesting connection to a wireless network; a first base station that is adapted to receive, from the communication terminal (1A, 1B), the first message including the information relating to the device type attribute; a second base station that is adapted to receive the communication traffic of a Machine Type Communication, MTC, device as the communication terminal by setting parameters therein corresponding to the MTC device; a virtual Mobile Management Entity, MME, that is realized by software of a virtual machine and connected to the second base station, and that is adapted to process the communication traffic of the MTC device, and to be activated dynamically according to a state of the communication traffic of the MTC device; a first base station that is adapted to receive, from the communication terminal (1A, 1B), the first message including the information relating to the device type attribute; a second base station that is adapted to receive the communication traffic of a Machine Type Communication, MTC, device as the communication terminal by setting parameters therein corresponding to the MTC device; a virtual Mobile Management Entity, MME, that is realized by software of a virtual machine and connected to the second base station, and that is adapted to process the communication traffic of the MTC device, and to be activated dynamically according to a state of the communication traffic of the MTC device; a communication device that is adapted to receive a second message transmitted from the first base station, identify the device type attribute of the communication terminal (1A, 1B) based on an identification policy that is dynamically changed and information relating to the device type attribute included in the second message, control a connection for the communication terminal (1A, 1B) based on a predetermined control policy relating to the identified device type attribute, start processing for establishing a communication session between the communication terminal and a network node when the identified device type attribute indicates a non-MTC device, and transmit a switching instruction message instructing a base station switching to the communication terminal when the identified device type attribute indicates the MTC device; and wherein the communication terminal is adapted to transmit the first message to the second base station upon receiving the switching instruction message. start processing for establishing a communication session between the communication terminal and a network node when the identified device type attribute indicates a non-MTC device, and transmit a switching instruction message instructing a base station switching to the communication terminal when the identified device type attribute indicates the MTC device; and wherein the communication terminal is adapted to transmit the first message to the second base station upon receiving the switching instruction message.