Method and device for switching visible light communication and WiFi heterogeneous system

Abstract

The embodiment of the invention provides a method and device for switching visible light communication and a WiFi heterogeneous system. The method comprises the following steps: obtaining QoS parameters of all candidate networks in an initial switching state, wherein the QoS parameters comprise an available bandwidth, end-to-end delay, jitter and a bit error rate; based on the QoS parameters of each candidate network, performing normalization and fuzzification processing on the QoS parameters to obtain fuzzy values and weight values of the parameters in the QoS parameters; based on the fuzzy values and the weight values, obtaining the performance evaluation value of each candidate network by using a fuzzy rule, and switching from the current network to a candidate network with the performance evaluation value satisfying preset conditions. According to the method provided by the embodiment of the invention, switching decision is performed on the problems that the parameters change in real time and that accurate modeling is difficult to implement during the network switching according to the fuzzy rule, and no accurate modeling analysis needs to be performed on the heterogeneous network, thereby improving the switching speed and avoiding the "ping-pong effect".

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and more specifically, to a method and device for switching between visible light communication and WiFi heterogeneous systems. Background technique [0002] At present, the next generation of high-speed wireless LAN hopes to further increase the transmission rate by developing new spectrum resources, and effectively improve the performance of various indoor and outdoor dense network deployment environments. As a main technology for wireless data transmission, WiFi has less and less available radio frequency spectrum bandwidth as users' demand for wireless Internet continues to grow. In a large indoor place, when there are many access terminals, the rate of the traditional WiFi method is limited, and it is difficult to effectively improve the user experience effect. How to use limited spectrum resources to maximize the system capacity of mobile communication has be...

AI Technical Summary

Problems solved by technology

How to improve the handover speed, choose the correct handover target and the best handover timing, and avoid the "ping-pong effect" is of great significance, otherwise it will easily cause problems such as low handover efficiency, large signaling overhead, and waste of wireless resources.

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