Vertical switching method capable of adaptive to terminal requirements in ultra-dense heterogeneous wireless network

Abstract

The invention relates to a vertical switching method adaptive to terminal requirements in an ultra-dense heterogeneous wireless network, which belongs to the field of mobile communication and specifically comprises the following steps of: firstly, analyzing the relationship between the performances of a target network and a current network and the terminal requirements, and proposing a switching level evaluation method to reduce unnecessary switching while meeting the terminal requirements; and secondly, calculating the network performance income after switching, and predicting the switching state of the mobile terminal at the next moment by marking the end time of the network, thereby improving the accuracy of the network performance income; thirdly, using the optimized fuzzy logic, taking the switching factor and the network performance income as input to acquire an output value for final switching judgment; finally, indicating that a simulation result shows that the method can be self-adaptive to terminal demand triggering switching so that the network service stability can be enhanced, the network load is balanced, and overall performance of the system is improved while the satisfaction degree of the terminal is ensured.

Description

technical field [0001] The invention belongs to the field of mobile communication, in particular to a vertical switching method in an ultra-dense heterogeneous wireless network. Background technique [0002] With the continuous development of 5G network technology, it is bound to form a more complex and huge heterogeneous 5G network environment with the current wireless network environment, and jointly provide wireless network services with different characteristics for mobile terminals. In these complex network environments, the process of mobile terminals switching from one access point to an access point of a different technology is called vertical handover. How to switch mobile terminals to a network that meets the needs in such a large heterogeneous environment has become a challenge hot issues of research in this field. [0003] The literature [XU ​​Xiaodong, TANG Xiaoxuan, SUN Zhao, et al.Delay-oriented cr oss-tier handover optimization in ultra-dense heterogeneous n...

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Problems solved by technology

[0004] In addition, the above-mentioned handover strategies for heterogeneous 5G networks all use the optimal overall performance of the network or the R SS threshold as the handover basis, without considering the actual needs of the terminal The differences between different wireless network services cause mobile terminals to frequently trigger unnecessary switching and unbalanced network load

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