Handover method and handover system between heterogeneous networks

Abstract

The present invention provides a handover method and system between heterogeneous networks. The handover method includes: a terminal sends identity information and a network access identifier to a home user server through a mobility management entity; the home user server sends the network access identifier to To the access gateway; the home user server receives the seed key, sends the seed key to the terminal, calculates the local key and local identifier, and sends the local key and local identifier to the authentication, authorization and accounting of the target network The server; the terminal calculates the second handover key and the second handover identifier used for network handover; the authentication, authorization and accounting server sends the calculated first handover key to the access point of the target network for access Points and terminals perform network switching operations. The technical scheme of the invention effectively reduces the traffic in the re-authentication process when the cellular network (such as the LTE network) is switched to the WLAN network, thereby reducing the time delay of the re-authentication and effectively improving the probability of successful switching.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to a switching method between heterogeneous networks and a switching system between heterogeneous networks. Background technique [0002] With the development of the mobile Internet market and the popularization of smart terminals, the volume of data traffic has increased rapidly. The wireless data business of operators increased nearly 50 times from 2006 to 2009. Cisco (Cisco) predicts that the wireless data traffic in 2014 will increase by more than 15 times on the basis of 2010. However, the 3G network is still far from meeting the rapid growth of users. requirements, and the future LTE (Long Term Evolution, long-term evolution) cannot fully meet the requirements. [0003] WLAN (Wireless Local Area Networks, wireless local area network) can be used as a supplement and synergistic means of current cellular technology, and can help operators solve the problem of ex...

AI Technical Summary

Problems solved by technology

[0007] Therefore, how to optimize the handover process of the terminal from the LTE network to the WLAN network, and avoid the handover failure due to the long handover time has become an urgent technical problem to be solved.

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