A method for efficient allocation of global resources for hybrid multiplexing

Abstract

The invention relates to a method for efficiently allocating hybrid and multiplexed PON global resources, and belongs to the technical field of optical communication. This method first introduces the SDN with centralized control capability into the PON, so as to realize the centralized control and optimal allocation of multi-OLT resource allocation. Secondly, the fuzzy neural network prediction model is used to reduce the time delay caused by the information interaction between the OLT and the controller, and then a reasonable resource size is allocated to it according to the adaptive elastic weight coefficient assigned to the OLT, so as to improve the resource utilization between OLTs . Finally, by changing the sending position of the last ONU REPORT information on each wavelength, and the dual remaining bandwidth redistribution dynamic bandwidth allocation algorithm of light-loaded ONU remaining bandwidth and periodic idle time slots, the utilization rate of OLT internal resources is improved. The method realizes efficient distribution of PON global resources through centralized control of global resources, joint optimization of resources between OLTs and within the OLT, reduces network delay, and improves resource utilization.

Description

Technical field [0001] The invention belongs to the field of optical communication technology, and relates to a method for efficiently distributing global resources of a hybrid multiplexing PON. Background technique [0002] Hybrid PON has become one of the most competitive solutions for the next generation of passive optical networks with its advantages of "low cost, large capacity, wide coverage and full service". And resource allocation plays a vital 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 networks and wavelength division multiplexing passive optical networks. Therefore, how to design an efficient resource allocation mechanism to reduce time delay while improving channel utilization is a key issue in hybrid multiplexing PON research. [0003] At prese...

AI Technical Summary

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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