Method and system for route optimization during handover and access network element

摘要

A method and system for route optimization during switching and an access network element. In a process that a terminal is switched from a source access network element to a target access network element, the target access network element obtains identity information of a correspondent node of the terminal from the terminal, and triggers an access network element of the correspondent node to update a correspondent node mapping relationship. In the present solution, information of a correspondent node is obtained by adding a signaling interaction procedure between the network and the terminal host, so that the information of the correspondent node which is performing data communication is obtained in real time, and a subsequent data stream route optimization process is performed in time, thereby solving the problem of low processing performance and poor real-time performance resulted from an access gateway monitoring, detecting and maintaining correspondent node information.

主权项

1. A method for route optimization during switching in an identity location separation architecture based on a network, comprising:
establishing a communication relationship between a mobile node (MN) and a correspondent node (CN), switching, by the MN, from a source access network element to a target access network element, in which the target access network element stores a mapping relationship of identity information of the MN and location information of the target access network element; further comprising: inquiring, by the target access network element, to the MN to obtains identity information of the CN which has the communication relationship with the MN, and after the target access network element obtains the identity information of the CN, acquiring, by the target access network element, location information of an access network element on which the CN locates, and sending the mapping relationship of the identity information of the MN and the location information of the target access network element to the access network element on which the CN locates to update a mapping relationship on the CN from a mapping relationship of identity information of the MN and location information of the source access network element to the mapping relationship of the identity information of the MN and the location information of the target access network element.