1. A method for assigning a subnetwork to a communication terminal in a communication network having a plurality of subnetworks, wherein a subnetwork identifier is assigned to each subnetwork, the method comprising:receiving, by a base station of the communication network, an identification from the communication terminal, wherein the identification comprises a subnetwork identifier of a particular subnetwork of the communication network;
extracting, by the base station, the subnetwork identifier from the received identification;
selecting, by the base station, the particular subnetwork from the plurality of subnetworks of the communication network based on the extracted subnetwork identifier; and
assigning, by the base station, the particular subnetwork to the communication terminal for communicating in the communication network;
wherein each subnetwork contains a respective identification entity for identifying the communication terminal, wherein each respective identification entity is connected to the base station, and wherein the method further comprises: forwarding, by the base station, the received identification from the base station to an identification entity of the particular subnetwork to facilitate the identification entity of the particular subnetwork identifying the communication terminal;
wherein the communication network contains a management entity which manages communication via the subnetworks of the communication network, wherein the identification entity of the particular subnetwork forwards the identification of the communication terminal to the management entity, and wherein the management entity authenticates the communication terminal for communicating via the particular subnetwork.