Method of solving layering multicast maximum throughput of optical network

Abstract

The invention relates to optical communication technology and provides a method of solving optimum layer rate distribution and optimum wavelength resource distribution in a request protective light multicast switched network. The problem that a traditional multicast max-flow minimum value confirmed layer rate causes heterogeneous network node fairness and low handling capacity is solved. According to the method, a link separation route cluster is found, share degree of the link separation route cluster is calculated, a route inflow node with high share degree adopts network coding information, and information of code compression is transmitted in the route cluster with high share degree, wavelength resources are preferentially distributed to a link with the high share degree, minimum demand distribution of the wavelength resources is achieved, and use ratio of optical network limited wavelength resources is improved. The method of solving optimum layer rate distribution and optimum wavelength resource distribution in the request protective light multicast switched network is in favor of achieving maximum throughput of network, improves wavelength resource use ratio of a light group multicast network, and reduces wavelength number required by a light group.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a method for realizing the maximum throughput of layered multicast in an optical network. technical background [0002] With the development of optical network technology, there are more and more optical multicast applications in optical networks, such as single-point transmission, multi-point reception, multi-point resource provision, single-point search, multi-point transmission, and multi-point reception. The consumption of optical network bandwidth With the rapid increase of congestion and congestion, improving the throughput of optical network multicast and the utilization of optical fiber line resources has become an important issue faced by optical networks. At the same time, network equipment, end systems, and user requirements in optical networks develop gradually. Differences in user requirements and end system processing capabilities lead to network...

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Problems solved by technology

[0005] In view of the existing layered multicast network coding which only optimizes the rate of each layer without optimizing the wavelength bandwidth, and the layered multicast method has the problems of low network throughput and high complexity of the optimization algorithm, the present invention designs a method based on The optical multicast rate layering and bandwidth allocation method of network coding, the method includes: using a heuristic algorithm to design an optical multicast rate layering optimization scheme and designing an optical fiber link with a high degree of sharing in a layered optical network for network coding Method for Optimizing Wavelength Bandwidth Allocation

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