A terminal autonomous network selection system and method for a wireless heterogeneous network

Abstract

The invention belongs to the technical field of wireless communication, and discloses a terminal autonomous network selection system and method for a wireless heterogeneous network. The terminal uses ANDSF to detect and obtain service node information to form a terminal service node list; the terminal uses pilot signal measurement and carrier Listen to obtain the RMI of each node in the service node list; the terminal triggers the feature learner, inputs the measured RMI of each node into the feature learner, and outputs the evaluation value of the link quality of each node; the terminal uses the 802.11u standard and ANDSF to obtain services The load information of each node in the node list; the terminal triggers the policy learner, and inputs the obtained link quality evaluation value and load information of each node into the policy learner, and the output is the terminal selects the access node; the terminal records the selected node, updates and Record network selection income. The invention overcomes the disadvantages of additional signaling overhead and delay caused by server assistance or network assistance.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a terminal autonomous network selection system and method for a wireless heterogeneous network. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the continuous development of communication technology, the heterogeneous characteristics of wireless networks are becoming more and more obvious, and the characteristics of heterogeneous coexistence and integration of fifth-generation mobile communication networks are becoming more and more obvious. The goal of the wireless heterogeneous network is to make the heterogeneous RATs give full play to their respective advantages and complement each other, so that users can use the existing heterogeneous network to perform high-quality wireless communication anytime and anywhere, and achieve the best user experience. However, different RAT technol...

AI Technical Summary

Problems solved by technology

The shortcomings of this method are: firstly, this method is not suitable for providing highly real-time communication services, because the realization idea of ​​this method is that the server assists the network selection of the terminal, and the analysis and decision-making are all carried out on the server side. Therefore, from There will be an obvious delay in the process from the terminal to the server, and then back to the terminal from the server

The disadvantage of this method is: the phenomenon of poor node effect in this method will cause poor user experience

Furthermore, since the analysis and decision-making are all carried out on the server side, there will be obvious delays in the process from the terminal to the server, and then back to the terminal from the server, which makes this method not suitable for communication services that require delay

[0005] (2) The phenomenon of good nodes and poor effects in prior art 2 will result in poor user experience

This method does not consider the characteristics of the impact of concurrent terminal access on performance in 5G ultra-dense cellular scenarios. The load information obtained by the terminal is the load of the node before the terminal accesses. After a terminal selects a node based on the node load and signal strength , if there are multiple other terminals accessing the node at the same time as the terminal, it will cause the terminal to judge that the node can provide a good service before accessing, and the terminal’s traffic will be caused by the instant congestion of the node after accessing. poor user experience

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