Method and device for performing vertical handoff among heterogeneous networks

Abstract

The invention discloses a method and device for performing vertical handoff among heterogeneous networks, which are applied to a mobile terminal. The method comprises the following steps: monitoring signal intensity of a first network; when the signal intensity of the first network meets a preset handoff condition, determining effective data corresponding to the first network in a pre-obtained network service list which sequentially records history service data, aiming at every vertical handoff, of a network before vertical handoff; according to the effective data, determining accumulated service time length of each candidate network in a candidate network set; obtaining network parameters of each candidate network; according to the accumulated service time length and the network parameters of each candidate network, determining a network evaluation value of each candidate network; and according to the size of the network evaluation value of each candidate network, determining whether to perform the vertical handoff. By adopting the technical scheme provided by embodiments of the invention, the times of handoff is reduced, the ping-pong effect is avoided, and the user experience is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a vertical switching method and device between heterogeneous networks. Background technique [0002] With the rapid development of wireless network technology, heterogeneous networks with different network characteristics and using different access technologies are emerging, such as WiFi networks and 4G networks. In order to make better use of various heterogeneous network access technologies and meet users' requirements for network service quality, researchers have designed a variety of heterogeneous network fusion technology solutions. In the fusion technology solution of heterogeneous networks, mobility management is the most important issue, and mobility management mainly includes location management and handover management. Handover between heterogeneous networks, also known as vertical handover, is a current research hotspot. [0003] The vertical h...

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Problems solved by technology

[0004] This method has certain shortcomings. The signal strength of the wireless network is affected by many factors, such as obstacles, etc., and it may cause a ping-pong switching effect to determine whether to switch the network based on the current received signal strength of the network. The normal use of the user, the user experience is poor

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