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Business combing method and device for ASON special protection

A technology for business and protection paths, applied in the field of communication, can solve problems such as lack of ASON network, poor optimization effect, and insufficient consideration of business sorting methods, etc.

Inactive Publication Date: 2007-10-10
HUAWEI TECH CO LTD +1
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  • Abstract
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Problems solved by technology

[0011] At present, the technical solutions represented by TSTG mainly have the following two deficiencies. One is the lack of comprehensive solutions for ASON network dedicated protection. First, the existing technical solutions do not fully consider network work in ASON network planning. The joint optimization of routes and protection routes has a poor optimization effect. For example, TSTG first searches for a suitable working route to divert business traffic, and then searches for a protection route after it is determined, which narrows down the possible search range. Therefore, the final working and protection routes It is not the optimal result of the whole network, and at the same time, it does not give a simple and effective solution to the constraints of the shared risk link group (SRLG) of the network; the second is that the dedicated protection method has not been fully applied to the ASON traffic grooming problem , that is, in the process of protection, the carding method that does not fully consider the business

Method used

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  • Business combing method and device for ASON special protection
  • Business combing method and device for ASON special protection
  • Business combing method and device for ASON special protection

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0029] Before describing the embodiments of the present invention, the network model to which the embodiments of the present invention are applied will be described first.

[0030] The dynamic flow grooming in the wavelength routing network involved in this embodiment is a two-layer topology problem, including logical topology and physical topology. Links in the corresponding network are divided into two types: physical links and logical links (also called virtual wavelength links). The physical link is abstracted from the actual optical fiber link, and it is a bidirectional link, which represents the connection relationship between two adjacent nodes; when the LSP is established on the physical topology, the optical path between the corresponding router nodes is regarded as a logical link. A logical link is a unidirectional link, with router nodes at both end...

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Abstract

The method comprises: in ASON logical topology, searching a standby work path and a standby protection path; when receiving a service connection request, then calculating the weighting of each standby work path and the weighting of each standby protection path; based on it, determining a work-protection path pair; using the work-protection path pair to bear service.

Description

technical field [0001] The present invention relates to the field of communication, more specifically, to a method and device for sorting out services for automatic switching optical network (ASON) special protection. Background technique [0002] ASON is a new generation of optical transport network that can intelligently and automatically complete optical network switching and connection functions. It establishes a feasible and reliable protection and recovery mechanism through the mutual coordination of functions such as automatic neighbor discovery, automatic service discovery, routing algorithm, optical path management, and end-to-end protection, thereby realizing automatic discovery of network resources and topology, It provides intelligent optical routing and distributed intelligent recovery algorithm, and is a basic optical network device with high flexibility and high scalability. [0003] Under this premise, with the rapid development of wavelength division multip...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04Q3/52
Inventor 汪广泽黄善国罗沛顾畹仪
Owner HUAWEI TECH CO LTD
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