Automatically switched optical network (ASON) routing method for power control business
A power control and business technology, applied in electrical components, multiplexing system selection devices, digital transmission systems, etc., can solve the problems of not supporting automatic multi-routing protection, poor business scheduling capability, and poor network scalability, etc. Achieve the effect of meeting the requirements of network self-healing and improving work efficiency
Active Publication Date: 2016-05-25
XIANNING POWER SUPPLY COMPANY OF STATE GRID HUBEIELECTRIC POWER +3
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[0003] However, for the power system, as the scale of the power grid increases, the development of power communication services will become more prominent, which will definitely affect the continued smooth development of the business and the stability and security of the power grid communication network
At present, the optical fiber transmission network of the power system mainly has the following problems: the network topology is single, the reliability is not high; the bandwidth utilization rate is low; the network scalability is poor; the business scheduling ability is poor; ; and the current power grid control business can only use the SNCP self-healing ring protection method, does not support automatic multi-routing protection, and cannot deal with multi-point failures
[0007] In the case that all the nodes in the research network of the present invention have no wavelength conversion function, that is, the established optical channel must use the same wavelength in different fiber segments, in order to establish a wavelength channel, the optical network must find a route. There is a common idle wavelength in all fiber segments of this route, if such a route cannot be found, blocking occurs, which becomes the wavelength continuity limitation
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[0030] This embodiment relates to an ASON routing method for power control services, which is used to solve the wavelength selection under the limitation of OTN wavelength continuity.
[0031] in, figure 1 Wavelength path calculation flow chart. The specific implementation steps are:
[0032] a. After the CSPF module receives the path calculation request, it searches for the uplink and downlink service tributary ports and the line disk interface associated with the local uplink and downlink ports;
[0033] b. Calculate the path according to the wavelength specified by the local up / down port. If the wavelength specified by the up / down port is consistent with the default wavelength of the line disk interface on the local up / down port, if the path calculation is successful, the path calculation ends, otherwise, proceed to c;
[0034] c. Take the intersection of the originally supported wavelength ranges to obtain the available wavelength range for this wavelength selection calc...
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The invention relates to an automatically switched optical network (ASON) routing method for a power control business. Aiming at the delay constraint requirement of the power control business carried by the ASON, the invention provides a wavelength selection and routing computation strategy in the case that the ASON node does not have a wavelength conversion function, namely with wavelength continuity constraint. By using the method provided by the invention, the network self-healing requirement can be timely and effectively met with the wavelength continuity constraint, and the work efficiency is greatly improved.
Description
technical field [0001] The invention relates to an ASON routing method for power control services, and belongs to the technical field of communication of power transmission systems. Background technique [0002] At present, the backbone transmission network in the power communication system widely adopts the ring network or link layered structure composed of the SDH system, which constitutes the transmission platform of the entire power transmission network. SDH is a comprehensive information transmission network that can effectively implement functions such as add-drop multiplexing, line transmission, circuit switching, and network management system access. The SDH transmission system has a unified frame structure digital transmission standard rate in the world. Its high-speed multiplexing signal can realize one-time addition and insertion of low-speed tributary signals, which not only reduces the hardware overhead, but also simplifies the addition and insertion process. T...
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Login to View More IPC IPC(8): H04L12/721H04L12/733H04Q11/00H04L45/122
CPCH04L45/122H04L45/32H04L45/62H04Q11/0062
Inventor 朱胜华刘媛沈晗阳蒋海明杜明军肖水英姚庆刘智朱国威王汪兵王先培
Owner XIANNING POWER SUPPLY COMPANY OF STATE GRID HUBEIELECTRIC POWER