Transmission rate adjustment method in optical transport network and network device

Abstract

The present invention discloses a transmission rate adjustment method in an optical transport network and a network device. The method includes that the network device receives a transmission rate adjustment instruction, wherein the transmission rate adjustment instruction is an instruction for adjusting the target time slot information of a high-order optical data unit occupied by a target optical data unit, and the target optical data unit is a rate-configurable optical data unit; the network device determines the target time slot occupation information according to the transmission rate adjustment instruction, and adjusts the transmission rate of an optical channel corresponding to the target optical data unit according to the target time slot occupation information; the network devicetransmits the rate adjustment information of the optical channel corresponding to the target optical data unit to a downstream device connected to the network device, wherein the rate adjustment information includes a rate adjustment instructor and the target time slot occupation information, and the rate adjustment instructor is configured to instruct the downstream device to adjust the transmission rate of the optical channel corresponding to the target optical data unit according to the target time slot occupation information, thereby adjusting the transmission rate of the entire optical channel in the optical transmission network.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a transmission rate adjustment method and network equipment in an optical transmission network. Background technique [0002] Optical Transport Network (OTN), as the core technology of the next generation transport network, has a large transmission capacity and is the basic structure of the optical interconnection network. [0003] see figure 1 It is a schematic diagram of the layered structure of the optical transport network. As shown in the figure, the optical transport network includes an Optical Channel layer network (OCh), an Optical Multiplex Section layer network (OMS), and an Optical Transmission Section layer network (OTS). Among them, the optical channel layer is divided into three electrical domain sub-layers and an optical domain (ie optical channel), and the three electrical domain sub-layers are: optical channel payload unit k (Optical Channel Paylo...

AI Technical Summary

Problems solved by technology

The above-mentioned transmission rate adjustment method for ODUflex is not only time-consuming and labor-intensive, but also requires staff to have considerable equipment and knowledge reserves of optical transport networks

In today's line resource utilization, such transmission rate adjustment operations are becoming more and more frequent and necessary because operators actively re-allocate resources or customers request bandwidth changes.

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