Method and apparatus for distributing optical spectrum bandwidth resources

Abstract

An embodiment of the invention provides a method and an apparatus for distributing optical spectrum bandwidth resources, relating to the field of communication. According to the invention, the transport bandwidth and optical spectrum bandwidth resources suitable for the bandwidth of client service data are distributed on the basis of the bandwidth of the client service data, thereby achieving the flexible distribution and effective utilization of the optical spectrum resources. The method comprises: obtaining the bandwidth of an OTUbase on the basis of optical layer frequency space bandwidth and carrier spectrum efficiency; constructing an HO OTUflex on the basis of the bandwidth of the client service data and the bandwidth of the OTUbase; the bandwidth of the HO OTUflex being a first integral multiple of the bandwidth of the OTUbase; mapping the client service data to a payload area and packaging overhead information; and modulating the HO OTUflex carrying the client service data to optical channel carriers of a second integer. The embodiment of the invention is suitable of transport scenarios of the client service data.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for allocating optical spectrum bandwidth resources. Background technique [0002] OTN (Optical transport network, optical transport network) is the core technology of the next-generation transport network, including the technical specifications of the electrical layer and the optical layer, and can realize flexible scheduling and management of large-capacity services. With the massive growth of customer business, the optical transmission technology with a rate of 100Gbit / s has been widely used. At present, in order to achieve optimal and efficient network configuration and effective use of optical spectrum resources, OTN is required to have the ability to adapt to optical spectrum resource allocation and bandwidth adjustment, and achieve lossless bandwidth adjustment. For example, by flexibly selecting parameters such as optical modulation methods based on service ...

AI Technical Summary

Problems solved by technology

However, because the current OTN uses a fixed rate level to adapt to optical spectrum bandwidth resources, it cannot flexibly adapt to changes in the allocation of optical spectrum bandwidth resources to achieve effective use of optical spectrum resources.

In addition, 2.5G OTU1 or 10G OTU2 fixedly occupy 50GHz optical spectrum bandwidth resources, and there is also a waste of optical spectrum bandwidth resources, which are not fully utilized

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