Method for efficiently switching multi-system wireless networks based on software definition

Abstract

The invention discloses a method for efficiently switching multi-system wireless networks based on software definition, and belongs to the field of wireless communication. The method comprises the following steps that a link transmission platform of LTE and WiFi is built, and a terminal is simultaneously connected to an LTE network and a WiFi network; an asynchronous waiting connection is established between a controller and two clients, and a port of the controller is monitored in real time; a service source receiving thread of the controller receives video data and packages the video data; the controller sends the packaged video data to a controller client side at a UE side, receives the video data and test data, and counts and returns transmission link information of two links to the controller; and the controller compares the advantages and the disadvantages of a link transmission condition according to a packet loss rate, and if link switching is carried out, the controller sendsa link switching command back to a control platform, so that intelligent switching between the links is achieved. According to the method, seamless and intelligent switching between heterogeneous networks is achieved, processes such as authentication access and the like for switching between the heterogeneous networks are eliminated, and the switching service response delay between the heterogeneous networks is reduced.

Description

technical field [0001] The invention belongs to the field of wireless communication, relates to a seamless handover technology between LTE and WiFi heterogeneous wireless networks, and specifically relates to a software-defined multi-mode wireless network efficient handover method. Background technique [0002] The advent of the mobile Internet era has driven the explosive growth of data traffic. People's Internet application scenarios have turned more to high-traffic services such as video live broadcast and data transmission. Therefore, it is imminent to increase network capacity. [0003] Among today's many wireless network technologies, WiFi and cellular technology are undoubtedly the two most widely used and most successfully developed wireless technologies, both of which have their distinct characteristics. WiFi deployment is simple and fast, with large network capacity and high transmission rate. It is the best choice for people to access the Internet indoors. However...

AI Technical Summary

Problems solved by technology

[0008] The main purpose of LWA technology is to use unlicensed frequency bands for data transmission, and improve the transmission performance of LTE networks through WiFi networks. It cannot perform seamless switching between heterogeneous networks according to the transmission quality of current heterogeneous networks, and intelligently select the optimal network. The wireless network cannot adapt to the current scenario where users are highly mobile and switch back and forth between heterogeneous networks, and cannot guarantee the reliability of service quality

[0009] At the same time, due to the large differences in technical solutions, protocol standards, and coverage between different wireless networks, the service response delay for users switching between wireless networks of different standards is relatively large, and the network quality after switching cannot be guaranteed.

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