Switching processing method, communication system and associated equipment

Abstract

The embodiment of the invention discloses a switching processing method, a communication system and associated equipment. According to the invention, after a double-mode terminal is switched to a heterogeneous network, it can be ensured that the double-mode terminal will not be exited from the original network, so that the correctness of a mobile IP can be ensured under such a switching mode. Themethod of the embodiment of the invention is applied to a switching process of a worldwide interoperability for microwave access (WiMAX) network that uses a proxy mobile IP (PMIP) to a non- WiMAX network. The method comprises the following steps that: an authenticator of a WiMAX network receives an information authentication secret key counting updating request; if it is determined that an agencyfor a PMIP is terminated according to the information authentication secret key counting updating request, a foreign agent is informed to terminate the agency for the PMIP. The embodiment of the invention also provides a communication system and associated equipment. According to the embodiment of the invention, it can be effectively ensured that the double-mode terminal will not be exited from the original network, after the double-mode terminal is switched to the heterogeneous network, so that the correctness of the mobile IP can be ensured under such a switching mode.

Description

technical field [0001] The present invention relates to the communication field, in particular to a handover processing method, a communication system and related equipment. Background technique [0002] A dual-mode terminal can use single-radio handover or dual-radio handover when switching between heterogeneous networks. Single radio frequency switching means that the terminal can only transmit signals on one radio frequency at any time, that is to say, the terminal either works on this network or another network. [0003] During the switching process of the heterogeneous network, the Internet Protocol (IP, Internet Protocol) layer also needs to be switched, and the Mobile IP protocol (MIP, Mobile IP) is used. In the MIP protocol, an agent is used to realize IP mobility, and the agent is divided into a home agent (HA, Home Agent) and a foreign agent (FA, ForeignAgent). The mobile terminal has a home address (HoA, Home Address) assigned by the home agent, and also has a g...

AI Technical Summary

Problems solved by technology

[0006] When the terminal uses the proxy mobile IP protocol (PMIP, Proxy Mobile IP) in the WiMAX network, the home agent establishes a tunnel connection with the external agent in the WiMAX access network. If the terminal does not exit the WiMAX access network after switching to the WiFi access network network, the foreign agent and PMIP client in the WiMAX access network will not know that the terminal has been switched away, and the PMIP client will continue to maintain the tunnel between the foreign agent and the home agent, and in this way, it will cause the home agent to update by mistake Bonding, switching the IP connection back to the WiMAX network, thus affecting the correctness of the communication

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