A Collaborative Vertical Handoff Method Based on Heterogeneous Edge Cloud in uhwns

Abstract

The present invention requests protection of a cooperative vertical switching method based on heterogeneous edge cloud in UHWNs. In the ultra-dense heterogeneous wireless network formed by the fusion of wireless local area network and heterogeneous cellular network, the number of devices increases sharply and the network architecture is more complicated. The problem that leads to the difficulty of judging vertical handover, firstly, by analyzing the handover problem of ultra-dense heterogeneous wireless networks, a heterogeneous network architecture combining D2D network and edge cloud computing ideas is proposed; secondly, based on the proposed network architecture scenario, further A three-level cooperative vertical handover algorithm is proposed, through the three-level cooperation between the D2D network, the micro base station configured with the edge cloud server, and the macro base station, the comprehensive handover performance is improved; finally, the experimental simulation shows that the algorithm can ensure the terminal service quality At the same time, more terminals can be quickly connected to the appropriate network, and the comprehensive benefits of terminal network selection in the entire system are improved.

Description

technical field [0001] The invention belongs to a vertical switching method in an ultra-dense heterogeneous wireless network and belongs to the field of mobile communication. In particular, it involves a three-level collaboration method combining D2D network and edge cloud computing ideas for vertical switching. Background technique [0002] With the 5G heterogeneous cellular network composed of small base station (Small Base Station, SBS) and macro base station (Macro Base Station, MBS), integrated into wireless local area network (Wireless Local Area Networks, WLAN), global microwave access In traditional heterogeneous wireless network scenarios such as World Interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE), different types of technologies together provide mobile terminals (Mobile Terminal, MT) with ubiquitous The network service becomes the development trend in the future, and an ultra-dense heterogeneous wireless network (UHWNs) will be formed...

AI Technical Summary

Problems solved by technology

The above-mentioned vertical handover algorithm based on the network side needs to coordinate and control the resource allocation of the entire network. All terminal access requests are processed centrally by the background data center. In an ultra-dense heterogeneous wireless scenario, with the number of base stations and terminals The sharp increase of will inevitably cause the control bottleneck problem of centralized processing

In addition, the above algorithms can achieve good results in the original environment, but they do not consider the problem that the vertical handover algorithm is difficult to judge in the ultra-dense heterogeneous wireless network environment after the number of base stations and terminals increases sharply: the candidate network And the increase in the number of terminals exacerbates the bottleneck problem caused by the complexity of network selection and centralized control mechanism

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