Method for network handover, terminal, gateway and network system thereof

Abstract

The embodiments in the present invention disclose a method, user equipment (UE), gateway and network system for network handover. The method comprises: the long term evolution (LTE) network side sends the UE a message to indicate that the UE has been allowed to be registered with the evolved high rate packet data (eHRPD) network; when the UE has been registered with the eHRPD network via the eHRPD air interface, the eHRPD network side establishes a proxy mobile IP tunnel through which the UE is handed over to the eHRPD network. The UE comprises a registration module and a trigger module. The gateway comprises a receiving module and a tunnel establishment module. The system comprises a UE, a base station and an HRPD serving gateway (HSGW). The embodiments in the present invention can decrease the handover interrupt time and reduce the complexity of the network and the UE.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a network switching method, a terminal, a gateway and a network system. Background technique [0002] LTE (Long Term Evolution, Long Term Evolution) technology is the evolution of 3GPP (Third Generation Partnership Project, Third Generation Partnership Project), which improves and enhances 3G air access technology, adopts orthogonal frequency division multiplexing and multiple input Multi-output as the only standard for its wireless network evolution. In the LTE network, Serving Gateway (Serving Gateway) and PDN Gateway (Packet Data Network Gateway, P-GW) are evolved gateways, responsible for forwarding data packets, and MME (Mobility Management Entity, Mobility Management Entity) is the signaling control The entity is responsible for functions such as authentication and mobility management. The evolved network does not provide the voice function of traditional cir...

AI Technical Summary

Problems solved by technology

[0007] In the first way, when the UE decides to initiate handover from LTE to eHRPD, it leaves the source LTE network, and performs processes such as eHRPD session negotiation, PPP negotiation, and EAP-AKA authentication on the target eHRPD network. It takes a few seconds, resulting in a long switching interruption time, which affects the user experience

Although the second method greatly reduces the service interruption time of handover from LTE to eHRPD, it needs to add two interfaces between the LTE and eHRPD networks, which increases the complexity of the network, and requires modification of the UE's protocol stack to enable the UE to pass LTE sends eHRPD messages, thus increasing the complexity of the UE

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