Example implementations described herein are directed to management of communication sessions a target application for an underlying apparatus and a corresponding server. Such example implementations involve obtaining a plurality state, of a target application, each of which corresponds to delay requirement, establishing a plurality of communication sessions each of which satisfy the plurality of state using different network slices, specifying the network slices which satisfy the current state and sending data using the specified network slices. When the state of the target application is changed, the communication session and network slice is also changed to another communication session that satisfies the new state.