Patent ID: 8134971
Filing Date: 2012-03-13
Classification: H04W

Abstract:
1. A method for providing a first communication service by a first controller of a first communication system in a heterogeneous communication system, the method comprising: if a communication path for providing the first communication service to a terminal is generated, determining whether a load of traffic occurs in the first communication system providing the first communication service; if the load of traffic occurs in the first communication system, transmitting a first request message indicating that the terminal is required to receive the first communication service over a second communication system, to an interworking unit configured to perform interworking between the first communication system and the second communication system providing a second communication service, the interworking unit comprising a medium access control (MAC) layer and a physical layer associated with each of the first and second communication systems, and a bridge configured to connect the MAC layer and the physical layer associated with one of the first and second communication systems; receiving a response message corresponding to the first request message from the interworking unit; and allocating an internet protocol (IP) address of the second communication system to the terminal according to the response message.