Node grouping algorithm applied in PON (Passive Optical Network) planning

A technology of network planning and application method, applied in the field of grouping algorithm

Inactive Publication Date: 2012-02-15
WUXI BUPT SENSING TECH & IND ACADEMY +1
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Problems solved by technology

[0005] The present invention mainly solves the problem that adjacent nodes are divided into two groups with a certain probability in the existing grouping algorithm used in PON network planning. In the grouping process, the shortest distance grouping based on the greedy strategy makes it a A Node Grouping Method Applicable to PON Network ODN Planning

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  • Node grouping algorithm applied in PON (Passive Optical Network) planning
  • Node grouping algorithm applied in PON (Passive Optical Network) planning
  • Node grouping algorithm applied in PON (Passive Optical Network) planning

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[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] attached figure 1 Shown is the overall flow chart of the present invention. The network planning method proposed by the present invention mainly includes two parts: grouping process and grouping validity judgment, and divides the whole planning process into ONU grouping process, ONU grouping validity judgment process, OBD grouping process, and OBD grouping process according to the difference between ONU grouping and OBD grouping. There are four parts to group effectiveness judgment. The specific process is described as follows.

[0037] Step 11: Network initialization: count the total nu...

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Abstract

The invention discloses an application method of closest-distance node grouping algorithm in PON (Passive Optical Network) planning, which comprises the following steps: using a closest-distance grouping algorithm in the process of optical network unit grouping and an OBD (Optical Branch Device); and verifying a grouping result after the completion of the grouping. In the invention, the influence of the proximity relation of the nodes on the distance to an optical wiring network planning design is fully considered, by the method that the smallest node group is formed by a node closest distance, the condition that adjacent nodes are grouped in different node groups can be avoided, the combination problem of the node groups is solved, the result of the grouping algorithm can be used for directing the selection of the OBD and the optimal design of an optical wiring network, and the engineering applicability is improved by the algorithm through a series of verification conditions.

Description

technical field [0001] The invention relates to the field of passive optical network (Passive Optical Network, PON) planning, and is a grouping algorithm oriented to the application of PON network planning. This method is mainly used in PON network planning, and can reasonably and effectively plan the placement positions of optical splitter / combiner (OBD, Optical Branch Device) and optical line terminal (OLT, Optical Line Terminal). Background technique [0002] In recent years, with the rapid development of network technology, especially the Internet network, due to the advantages of optical fiber technology with large capacity, low cost, security, and amazing transmission capabilities, in order to achieve higher bandwidth, people began to use passive optical networks. Bring fiber closer to users in a more economical way. Different from the previous point-to-point-based linear and ring active optical networks (SDH / PDH), PON optical distribution network (ODN, optical distri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04B10/08H04L12/24
Inventor 李慧庞冉纪越峰
Owner WUXI BUPT SENSING TECH & IND ACADEMY
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