Method and system for processing handover in heterogeneous mobility protocol mixed networks and mip client device

Abstract

Provided are a method for processing handover to provide IP mobility for mobile user equipment, a system thereof, and a Mobile IP (MIP) client device. The method processing handover at a home agent in a heterogeneous protocol mixed network includes: at a home agent, creating a Proxy Mobile IP (PMIP) tunnel when user equipment accesses a PMIP network; at the home agent, creating a Client Mobile IP (CMIP) tunnel when a CMIP network is accessed due to handover of the user equipment; and at the home agent, severing the PMIP tunnel when the user equipment completes performing handover.

Description

TECHNICAL FIELD[0001]Exemplary embodiments of the present invention relate to a method for processing handover to provide IP mobility for mobile user equipment, a system thereof, and a Mobile IP (MIP) client device; and, more particularly, to a method for processing handover in a heterogeneous mobility protocol mixed networkS, a system thereof, and a MIP client device, which are for providing mobility of mobile user equipment in a heterogeneous mobility protocol mixed networkS where a method for providing mobility for mobile user equipment is changed to a Client Mobile IP (CMIP) scheme or a Proxy Mobile IP (PMIP) scheme according to the network to be accessed.[0002]In an embodiment of the present invention, a client mobile Internet protocol (CMIP) and a proxy mobile Internet protocol (PMIP) will be described as an example of a heterogeneous mobility protocol. However, the present invention is not limited thereto. A method for processing handover between two different mobility protoc...

AI Technical Summary

Benefits of technology

[0038]As described above, the embodiments of the present invention provide mobility of mobile user equipment by performing handover in a heterogeneous mobility protocol mixed network.

[0039]That is, the embodiments of the present invention provide a seamless service to one mobile user equipment in a PMIP network and a CMIP network. In other words, the embodiments of the present invention provide IP mobility to mobile user equipment in a heterogeneous mobility protocol mixed network through interworking of a CMIP and a PMIP by applying a CMIP to a wireless access network having difficulty to modify an access router or by applying a PMIP to a wireless access network where an access router is easily modified.

[0040]Further, the embodiments of the present invention enable handover between two networks when IP mobility is applied between a CMIP applied WiMAX network and a PMIP applied UMTS network. Accordingly, handover between heterogeneous wireless networks can be performed without interruption of communication.

[0041]Moreover, the continuity of an application service can be provided by performing handover between heterogeneous networks without interrupting communication.

Problems solved by technology

However, the CMIP is ineffective in view of utilization of wireless resources and power consumption of user equipment because a location registration signal must be transmitted and received through a wireless period.

Accordingly, handover is disadvantageously delayed due to the allocation of new IP address.

However, the user equipment provided mobility based on a CHIP cannot have a seamless service if the user equipment enters to a network supporting a PMIP.

Or, the user equipment provided mobility based on a PMIP cannot have a seamless service if the user equipment enters to a network supporting a CMIP.

Images