Method for routing data from an application client to an application server via a core network of a cellular network

A method for routing data through a cellular network from an application client at a User Equipment, UE, to an application server via the core network, the method comprising:

• receiving, at a network operator platform from a UE, an initial request for establishment of a communication session between the application client and the application server, the communication session to be routed via a network slice, the network slice for routing of data belonging to a category of data traffic sent from the application client to the application server;
• generating, by the network operator platform, configuration information for configuration of the application client for establishment of the communication session, the application client configuration information comprising:
• an instruction to the application client to address a subsequent request for establishment of a communication session with the application server to a token Data Network Name, DNN;
• generating, by the network operator platform, configuration information for configuration of the core network for establishment of the communication session, the core network configuration information comprising:
• an instruction for the core network to change the token DNN for a specified DNN upon receipt of a request for establishment of a communication session addressed to said token DNN;
• an instruction for the core network to generate a UE Route Selection Policy, URSP, to be sent to the UE, the generated URSP rule associating the category of data traffic sent from the application client to the application server with the token DNN and the network slice;
• configuring the application client according to the application client configuration information;
• configuring the core network according to the core network configuration information, thereby causing the core network to send the generated URSP to the UE to be stored in a URSP repository at the UE;
• wherein after configuring the application client and the core network, the subsequent request for establishment of a communication session between the application client and the application server is sent from the application client via the network slice, indicating the category of data traffic and addressed to the token DNN, the core network identifying information on the data in the communication session and the application client from which it is routed by receipt of the token DNN, in order to facilitate specific handling or treatment for the communication session by the network operator.