Vertical switching method and vertical switching device

Abstract

The invention discloses a vertical switching method. A motion trend of a motion carrier and each parameter of network properties of each network capable of being accessed presently by a mobile terminal on the motion carrier are acquired; for each parameter of the network properties of each network, a switching probability of the mobile terminal switched to each network is respectively determined according to each parameter, and a switching probability of the mobile terminal switched to each network is respectively determined according to the motion trend; for each network, a prior switching probability of the mobile terminal switched to each network is respectively determined according to the switching probability corresponding to each parameter of each network and the switching probability corresponding to the motion trend of the motion carrier; a target network of the mobile terminal is determined according to the prior switching probability; the mobile terminal is switched to the target network. The invention further discloses a vertical switching device. Through the technical scheme, timely network update is guaranteed, and a ping-pong effect is effectively avoided.

Description

technical field [0001] The invention relates to a vertical handover technology in the field of Internet of Vehicles, in particular to a Bayesian decision-based vertical handover method and device. Background technique [0002] The Internet of Vehicles is the Internet of Vehicles, which is a hot spot in the research of Internet of Things technology and its application demonstration. With the development of the Internet of Vehicles, the various networks involved in the Internet of Vehicles tend to converge. Through the integration of heterogeneous networks, each network can give full play to its own advantages to meet the needs of users for the network. At present, the wireless access technologies involved in the Internet of Vehicles mainly include: [0003] 1) Wireless Access in the Vehicle Environment (Wireless Access in the Vehicular Environment, WAVE), which is mainly used for vehicle wireless communication, serves as the basis for Dedicated Short Range Communications (D...

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Problems solved by technology

[0005] 3) The third generation mobile communication technology (3rd Generation, 3G) cellular network (Cellular) access technology, which has the advantages of wide coverage, seamless handover, and support for high-speed mobile nodes, but the transmission rate is limited

Due to the characteristics of the mobility of the vehicle itself, the network topology changes rapidly, resulting in the need for more inter-network handovers. Frequent handovers make the network less stable, which will seriously affect the quality of service on the terminal.

So far, there is no research on the handover of vehicles between heterogeneous wireless networks; and due to the uniqueness of the Internet of Vehicles network environment, the existing methods do not fully consider the network attributes and vehicle motion attributes

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