Optical signal-to-noise ratio calculation method for OTN

Abstract

The embodiment of the invention discloses an optical signal-to-noise ratio calculation method for an OTN. The method comprises the following steps of: establishing an optical signal-to-noise ratio calculation model according to a cascade link in the OTN; obtaining an output parameter and a link parameter of the calculation model; changing the node number in the calculation model; and performing optical signal-to-noise ratio calculation of the calculation model having changed nodes. According to the embodiment of the invention, the corresponding optical signal-to-noise ratio calculation model is established; the optical signal-to-noise ratio of the calculation model is obtained through the calculated output parameter and link parameter of the calculation model; then, operations, such as node increasing and node deletion, are carried out based on the calculation model; therefore, the network topology of the OTN is changed; the OTN topology change problem and the problem whether transmission also can be continuously carried out after topology is changed are considered; and it judges that the optical signal-to-noise ratio after network topology is changed is calculated if the topology changed OTN satisfies the continuous transmission condition.

Description

technical field [0001] The invention relates to the technical field of smart grids, in particular to an optical signal-to-noise ratio calculation method of an OTN network. Background technique [0002] With the vigorous development of the smart grid, the informatization work of the power grid has produced a large amount of business data, which has caused great pressure on the bandwidth of the original support system. To solve this problem, the OTN ( Optical Transport Network, Optical Transport Network) technology to form a network, and further form an optical transmission network to support a large amount of data generated by power grid informatization. In the past, OTN technology was mainly used by operators, and its network architecture was stable once it was designed. However, in the actual operation of the power grid, the continuous construction of the power grid will lead to changes in the OTN network structure. Changes in the network structure mainly affect the underly...

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Problems solved by technology

[0005] An embodiment of the present invention provides an optical signal-to-noise ratio calculation method of an OTN network to solve the problem that the optical signal-to-noise ratio calculation method in the prior art does not consider the change of the network topology resulting in the change of the system transmission state

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