The method includes storing a gateway tunnel identifier, a base station identifier and a base station tunnel identifier; receiving, by the base station, a service request message from a device; establishing, by the base station, a radio bearer between the base station and the device in response to the service request message; receiving, by the base station, one or more first uplink data packets from the device using the radio bearer; modifying, by the base station, the one or more first uplink data packets such that the one or more first uplink data packets include the gateway tunnel identifier, the base station identifier and the base station tunnel identifier; and sending, by the base station, the modified uplink data packet to a gateway.