Patent ID: 8892089

Claim:
A communications system, comprising: an upper-level apparatus configured to have communication functions for a first communication session and a second communication session, the upper-level apparatus being a mobile communication carrier formed from core network and gateway elements; and a dual femtocell base station apparatus supporting both 3G and LTE comprising: a first communication unit configured to communicate with the upper-level apparatus through the first communication session established therewith, the first communication unit communicating with the upper-level apparatus through a 3G communication session, a second communication unit configured to communicate with the upper-level apparatus through the second communication session established therewith, the second communication unit communicating with the upper-level apparatus through a LTE communication session; and a communication control unit configured to control the first communication unit and the second communication unit; wherein the communication control unit disconnects the first communication session and directs a signal intended for the first communication session to the second communication session, so that the signal is delivered to the upper-level apparatus by using the second communication session as a detour, wherein the signal intended for the first communication session is delivered to the upper-level apparatus by sending the signal to the second communication unit from the first communication unit according to a command from the communication control unit, and then tunneling the signal to the upper-level apparatus through the second communication session.