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Method for achieving multiple protection of bearer network, and bearer network

A bearer network, multiple protection technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve the problems of lack of regularity, scattered OLP paragraphs, and inability to achieve, maximize investment efficiency and protection efficiency, avoid Difficulty separating effects

Active Publication Date: 2015-09-30
中国移动通信集团内蒙古有限公司
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AI Technical Summary

Problems solved by technology

[0009] However, for some sections of the network using OLP for overlay protection, because the OLP sections are scattered and lack regularity, it is impossible to realize the protection of the three-way source end to the destination end for key business areas, such as: county-level central stations, etc.

Method used

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  • Method for achieving multiple protection of bearer network, and bearer network
  • Method for achieving multiple protection of bearer network, and bearer network
  • Method for achieving multiple protection of bearer network, and bearer network

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Embodiment Construction

[0036] In the embodiment of the present invention, the SDH and PTN are uniformly carried on the OTN, different routing optical cables are established between each core office of the OTN core layer, and finally the shortest path from the source end to the destination end is calculated, and the shortest path is used as protection path.

[0037] Specifically, the calculating the shortest path from the source end to the destination end includes: calculating the cost value from the source end to the destination end, and obtaining the shortest path from the source end to the destination end according to the minimum cost value obtained by the calculation;

[0038] Wherein, the calculating the cost value from the source end to the destination end includes: calculating the cost value from the source end to the destination end according to COST=(∑cost)×Q;

[0039]Here, COST is the total paragraph cost value, cost is the cost value of each paragraph, Q is the weight value; the paragraph ...

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Abstract

The invention discloses a method for achieving the multiple protection of a bearer network, and the method comprises the steps: enabling SDH and PTN to be supported by an OTN (optical transmission network) in a unified manner; building different routing optical cables in all core interoffices of an OTN core layer; calculating the shortest path from a source end to a target end, and enabling the shortest path to serve as a protection path. The invention also discloses the bearer network achieving the multiple protection, and the bearer network comprises the SDH, the PTN, and the OTN. The SDH and the PTN are supporting by the OTN in a unified manner through a wave channel. The OTN comprises the core layer and a convergence layer, wherein the core interoffices of the core layer are provided with different routing optical cables. The OTN also comprises calculating equipment which is used for calculating the shortest path from the source end to the target end, and the shortest path serves as the protection path.

Description

technical field [0001] The invention relates to a protection technology in a transport network, in particular to a method for realizing multiple protection of a bearer network and a bearer network. Background technique [0002] At present, bearer networks include: Synchronous Digital Hierarchy (SDH), Packet Transport Network (PTN), and Optical Transport Network (OTN), etc. Among them, 2G services are mainly carried on SDH , 3G services are mainly carried on PTN. [0003] The network structures of SDH, PTN, and OTN include three parts: the core layer, the aggregation ring, and the access ring. Specifically, the core layer of SDH is mainly carried by bare optical fibers, the aggregation ring of SDH is generally carried by optical cables, and long-distance sections are carried by OTN Bearing, the access ring of SDH is carried by optical cable; the core layer of PTN is carried by OTN or bare fiber, the aggregation ring of PTN is generally carried by OTN or optical cable, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/703H04L45/28
Inventor 边德明毕胜王艳秋牛纯志韩华侯英波吴满全李景文王军
Owner 中国移动通信集团内蒙古有限公司
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