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Bus selection method and device for optical synchronization digital transmission system

A technology of optical synchronous digital and bus selection, which is applied in the field of optical communication, can solve problems such as business failures, and achieve the effect of solving business failures

Active Publication Date: 2008-03-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In this case, when the switching status of the two cross-connect units is inconsistent, if the overhead bus and the service bus of the service processing unit on the ring select the cross-connect unit in different directions, the service on the ring will be blocked.

Method used

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  • Bus selection method and device for optical synchronization digital transmission system
  • Bus selection method and device for optical synchronization digital transmission system
  • Bus selection method and device for optical synchronization digital transmission system

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Embodiment Construction

[0018] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Referring to Fig. 1, the relationship between the crossover unit and the service processing unit in the optical synchronous digital transmission system is illustrated. As shown in Figure 1, the hardware part of the optical synchronous digital transmission system includes a crossover unit and a service processing unit. Among them, the cross-connect unit adopts a 1+1 backup method, and the service processing unit selects the bus from the cross-connect unit in a concurrent and optimal receiving manner. Wherein, the buses coming from the cross-connect unit include an overhead bus and a service bus.

[0020] Referring to FIG. 2 , a bus selection method for an optical synchronous digital transmission system according to an embodiment of the present invention is illustrated. As shown in Figure 2, the bus selection method include...

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Abstract

The invention discloses a method and device for selecting bus for an optical synchronous digital transmission system, wherein the bus selection method includes the following steps: S202, detection at least two crossing units, and / or overhead bus of at least two crossing units, and / or business bus station of at least two crossing units; and S204, performing selection on the overhead bus and business bus of at least two crossing units according to the detection result. In a system which adopts crossing single board 1+1 backup, the invention can overcome the shortcomings of single selection mode for independently selecting the overhead bus and business bus via a business processing unit and solve the problems caused by non-uniform switchover state.

Description

technical field [0001] The invention relates to the field of optical communication, and more particularly relates to a bus selection method and device for an optical synchronous digital transmission system. Background technique [0002] In the current optical synchronous digital transmission (SDH) system, in order to improve the protection capability of the core unit, a 1+1 backup protection mechanism is adopted for the cross-connect unit, and the protection is realized by realizing concurrent and optimal reception of the bus on the service processing unit. [0003] The prior art provides a bus selection technology for a service processing unit, which is characterized in that the service processing unit independently selects an overhead bus and a service bus. [0004] In this case, when the switching states of the two cross-connect units are inconsistent, if the overhead bus and the service bus of the service processing unit on the ring select cross-connect units in differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J3/16H04J3/08
Inventor 杨昭霞吕军
Owner ZTE CORP
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