A network switching method, mobile device, service network node and system

Abstract

The invention provides a network switching method. The method comprises the following steps: upon receiving the link quality-deteriorating indication information sent by an MN, sending a query messageof a candidate switching network to the MN; after receiving a response message carrying the candidate network list sent by the MN, determining a target service point TPOS from the candidate network list, and sending a network switching submitting request carrying the TPOS information to the MN; upon receiving the response message of the MN about the TPOS information, sending an extended signalingto the TPOS; upon receiving a response message corresponding to the extended signaling replied by the TPOS, notifying the MN to be switched to the TPOS. The method is used for signalling extension inthe current service point SPOS and TPOS interaction process, so that the extended signaling integrates the signaling content of MIH messages and the FPMIPv6 protocol. As a result, the fusion of a network layer and an MIH layer is achieved. The number of redundant signaling messages is reduced. Meanwhile, the interaction process of mobile equipment is improved, so that the participation degree ofthe mobile equipment in the switching process is reduced. Therefore, the time delay and the signaling overhead of network switching are reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of network communication, and more specifically, relate to a network switching method, a mobile device, a service network node and a system. Background technique [0002] With the rapid development of mobile Internet technology, using mobile devices such as smart phones to obtain online video, online games, mobile payment, social communication, etc. has become an important part of people's daily life. Existing mobile devices are generally configured with multiple wireless interfaces such as WiFi, 3G / 4G, and support multiple wireless network types. These networks overlap each other geographically and together provide network services to mobile users. In order to better meet the needs of users for mobile Internet access and achieve seamless network coverage, it is necessary to make full use of various types of wireless networks, but how to use multiple types of wireless networks involves...

AI Technical Summary

Problems solved by technology

[0035] (5) MN loses connection with SPoS;

[0040] From the handover scheme given by the above IEEE 802.21 standard, it can be found that there are redundant signaling messages between PMIPv6 and MIH, some functions are duplicated, lack of integration between signaling, and the participation of mobile devices is too high, resulting in network handover. Long delay and excessive signaling overhead

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