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

An allocation method and technology of global resources, applied in the field of efficient allocation of global resources of hybrid multiplexing PON, can solve the problems of deteriorating the delay performance of the whole network, increasing the delay of data packets, and large delay of resource allocation, so as to improve the efficiency and Fairness, ensuring the effect of reasonable distribution

Active Publication Date: 2016-12-07
CHONGQING UNIV OF POSTS & TELECOMM
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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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  • Hybrid multiplexing passive optical network (PON) overall resource efficient allocation method
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  • Hybrid multiplexing passive optical network (PON) overall resource efficient allocation method

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Embodiment Construction

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] The present invention firstly introduces the SDN with centralized control capability into the PON, so as to realize the optimal allocation of resource allocation of multiple OLTs. 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, as well as the dynamic bandwidth allocation algorithm for redistribution of the remaining bandwidth of the light-loaded ONU and the remaining bandwidth of the periodic idle time slot twice, the internal resource utilization...

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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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/917H04L47/76
CPCH04L47/76H04L47/83
Inventor 熊余张振振吴大鹏师劲
Owner CHONGQING UNIV OF POSTS & TELECOMM
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