Method for optimizing multi-grade light-splitting passive optical network of distribution communication network

Abstract

The invention relates to a method for optimizing a multi-grade light-splitting passive optical network of a distribution communication network. The method is that the network at the current grade bears the gene optimization result of the network at the previous grade through the cascading genetic algorithm. The method specifically comprises the steps of designing a gene code; creating constraint conditions for the gene code, and selecting adaptability functions; performing crossover and variation operation for the gene code on the premise that the constraint conditions for the gene code are met; performing multi-generation iterative crossover and variation operation to obtain the optimal gene code of the PON network at the current level; returning to step (1) to bear the gene code of previous level when the number of the network layers of the multi-grade light-slitting passive optical network is less than n, and updating the adaptability function; finishing the optimization when the number of the network layers of the multi-grade light-slitting passive optical network is more than 1. According to the method, the optimal light splitter and relatively high network star topology in the network are selected from the optimized multi-grade light-splitting network, and therefore, the network communication construction cost is saved; the network planning is constructed into a mathematical model, thus the expandability is improved, and the calculation complexity is reduced.

Description

technical field [0001] The invention relates to an optimization method, in particular to a multi-level splitting passive optical network optimization method for a power distribution communication network. Background technique [0002] With the vigorous promotion and construction of intelligent power distribution, EPON (Ethernet Passive Optical Network, EPON) technology has become the main trend of power distribution communication network, and its front coverage radius has reached 20km ~ 60km, which is very suitable for large-scale power distribution network architecture , so it is widely used in distribution network. As one of the main communication technologies in the distribution network, the passive optical network (Passive Optical Network) has technical characteristics that are more suitable for the needs of primary lines and future distribution network services, and is the best communication system for carrying power distribution services. technology. [0003] In the ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-level splitting passive optical network optimization method for power distribution communication networks, which uses a cascaded genetic algorithm to allow the network at this level to inherit the genetic optimization results of the network at the previous level for use at this level The determination of the network fitness function breaks through the shortcomings of the traditional genetic algorithm that cannot be inherited in a loop to achieve multi-layer optimization, and enables the optimized multi-level optical splitting network to select the best optical splitter and a better network star topology in the network, saving network Communication construction cost; this algorithm establishes network planning as a mathematical model, which has good scalability and reduces computational complexity

Images