Communication mode access selection method for smart distribution grid heterogeneous wireless network

Abstract

The invention requests to protect a communication mode access selection method for a smart distribution grid heterogeneous wireless network. When the network state or network demand of the current communication mode at a time moment t changes, the index values of GPRS, LTE, 3G, micro-power wireless and WIFI communication modes at a time moment t-1 and at the time moment t are acquired, including received signal strength, network bandwidth, network delay and packet loss rate; an initial decision matrix is constructed, and the initial decision matrix is processed in a dimensionless manner to obtain a dimensionless matrix; a first weight vector a1 of the index is obtained by an entropy weight method; a second weight vector a2 of the index is obtained based on a rough set theory; a1 and a2 are integrated to obtain a final index weight vector a; a correlation coefficient matrix is constructed by a grey correlation method based on the dimensionless matrix; and the communication mode with the optimal performance at the time moment t is decided based on the correlation coefficient matrix and the final index weight vector a. By adopting the method of the invention, the traffic blocking rate of the smart distribution grid can be effectively reduced, load balancing of a smart distribution grid communication network can be facilitated, and the reliability of service transmission of the smart distribution grid can be improved.

Description

Technical field [0001] The invention belongs to the field of communication networks of intelligent power distribution networks, and specifically relates to a communication mode access selection calculation method of a heterogeneous wireless network of the intelligent power distribution network. Background technique [0002] The communication network of the intelligent distribution network has the characteristics of a large number of communication terminal nodes, a relatively scattered node, a short communication distance, a variety of services, and a large amount of information. It also has industrial-grade requirements in terms of reliability, which will make the communication Access selection is very strict. Wireless communication technology has the advantages of flexible networking, low access cost, convenient operation and maintenance, etc. The most applications are GPRS, LTE, 3G, micro-power wireless, WIFI, etc. At present, the increasingly mature wireless communication tec...

AI Technical Summary

Problems solved by technology

Although these methods have improved the performance of communication access to a certain extent, there are still problems such as strong subjectivity and complex calculations, and most of these methods are based on static network parameters, without considering the dynamic change trend of network parameters

At present, there is no method for access selection of communication methods for dynamically changing business types and network states in heterogeneous wireless networks of smart distribution networks.

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