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Router calculation method and device

A computing method and routing technology, applied in the field of communication, can solve the problems of resource waste and neglect, and achieve the effect of reducing business consumption and improving the effective utilization rate

Active Publication Date: 2012-11-07
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the network topology based on route calculation is mainly composed of WDM links and OXC, without considering resources such as DXC and OEP inside the network element. Optimal, but considering the DXC and OEP resources inside the node, it may not be optimal, which will lead to waste of resources such as DXC and OEP to a certain extent
[0005] Aiming at the problem of waste of DXC, OEP and other resources in the network element due to the lack of consideration of DXC, OEP and other resources in the routing calculation in related technologies, no effective solution has been proposed so far.

Method used

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  • Router calculation method and device

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0029] image 3 is a flow chart of a route calculation method according to an embodiment of the present invention, such as image 3 As shown, the method mainly includes the following steps (step S302-step S306):

[0030] Step S302, splitting each network element node in the optical transport network (OTN) into a plurality of network element sub-nodes;

[0031] Step S304, configuring sub-node links for multiple network element sub-nodes, and constructing extended topology information of multiple network element sub-nodes according to the sub-node links;

[0032] Step S306, performing route calculation on multiple network element sub-nodes according to the extended topology information.

[0033] In...

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Abstract

The invention discloses a router calculation method and a router calculation device. The router calculation method comprises the following steps of: dividing each network element node in an optical transmission network (OTN) into a plurality of network element sub nodes; configuring sub node links for the plurality of network element sub nodes, and establishing topological expansion information of the network element sub nodes according to the sub node links; and utilizing a constraint shortest path first (CSPF) algorithm to carry out router calculation on the network element sub nodes according to the topological expansion information. With the adoption of the router calculation method and device provided by the invention, resources of DXC (Data Exchange Control), OEP (Original Entry Point) and the like can be saved; the effective use ratio of an OXC (Optical Cross Connection) resource is improved; and the service consumption is reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a route calculation method and device. Background technique [0002] The transport network is the foundation of the entire telecommunication network, and it provides a transmission channel and a transmission platform for the services carried by the entire network. Transmission network-related technologies mainly use SDH (Synchronous Digital Hierarchy, Synchronous Digital System) technology and WDM (Wavelength Division Multiplexing, wavelength division multiplexing) technology. Aiming at the advantages and disadvantages of SDH and WDM technologies, ITU (International Telecommunication Union, International Telecommunication Union) proposed OTN (Optical Transport Network, Optical Transport Network) architecture. The OTN network not only has the advantages of large capacity, high speed, and long-distance transmission of WDM, but also has the advantages of rich SDH access types, fl...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04Q11/00
CPCH04L45/00
Inventor 陈青松罗春卢刚
Owner ZTE CORP
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