Hybrid multiplexing passive optical network (PON) overall resource efficient allocation method

Abstract

The invention relates to a hybrid multiplexing passive optical network (PON) overall resource efficient allocation method, and belongs to the technical field of optical communication. The method comprises the steps of firstly introducing a software defined network (SDN) with a concentrated control capacity into a PON to achieve concentrated control and optimization on allocation of multiple optical line terminal (OLT) resources; then using a fuzzy neural network prediction model to reduce time delay generated by information interaction between the OLTs and a controller, and then allocating the resources with reasonable sizes to the OLTs according to self-adaptive elastic weight coefficients allocated to the OLTs, thus improving a resource utilization rate among the OLTs; and at last, improving the resource utilization rate in each OLT by changing an information sending position of the last optical network unit report (ONU REPORT) on each wavelength, and by using a light-load ONU residual bandwidth and cycle idle time slot dual residual bandwidth re-allocation dynamic bandwidth allocation algorithm. According to the method of the invention, the PON overall resource efficient allocation is achieved, the network time delay is reduced, and the resource utilization rate is improved by controlling the overall resources in a concentrated manner, and optimizing resource configuration among the OLTs and in the OLTs in a united manner.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and relates to a method for efficiently allocating hybrid and multiplexed PON global resources. Background technique [0002] Hybrid multiplexing PON has become one of the most competitive solutions for the next-generation passive optical network due to its advantages of "low cost, large capacity, wide coverage and full service". Resource allocation plays a crucial role in the transmission performance of hybrid multiplexing PON. Because the hybrid multiplexing PON has two-dimensional characteristics of wavelength and time slot, its resource scheduling is more complicated than traditional time division multiplexing passive optical network and wavelength division multiplexing passive optical network. Therefore, how to design an efficient resource allocation mechanism to reduce delay and improve channel utilization is a key issue in the research of hybrid multiplexing PON. [0003] A...

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Problems solved by technology

However, the information interaction between the controller of the SDOAN architecture and the OLT will increase the data packet delay during resource allocation, and the long-distance characteristics of the hybrid multiplexing PON itself, the resource allocation delay inside each OLT is relatively large, and the Will further deteriorate the delay performance of the entire network

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