Method and apparatus for protecting service in passive optical network

Abstract

The invention discloses a method for protecting an operation in a passive optical network and a device thereof. The operation signal is transmitted in a main line and a redundancy line simultaneously; the main line and the redundancy line are connected with a protective replacing device including a protective monitoring module and a replacing control module that are installed on a user side; a first step, the protective monitoring module judges states of the main line and the redundancy line respectively, and outputs a monitoring signal to the replacing control module; a second step, the replacing control module selects one route outputting according with the monitoring signal. The method moves TDM operation protection in the passive optical network to near the user side, enlarges the line protective range, has rapid replacing time and rapid operation recovery. The method can be completed through a device original apparatus and needs not extra cost, also can set whether starting protective function according with need, can close the replacing device when bandwidth is not enough.

Description

technical field [0001] The invention relates to a service protection method and device in a passive optical network in optical communication technology, in particular to a method and device for protecting time-division multiplexing services in a passive optical network. Background technique [0002] In order to meet the objective requirements of access network development and integration, as a new generation of broadband access technology, Passive Optical Network (PON) focuses more on the realization of telephone, video The direction of comprehensive access to various services such as data and data. How to take into account existing services and future network development has also become the focus of today's network development. [0003] With the development of circuit emulation technology, it has become a reality to realize the high-efficiency bearer of TDM services through the passive optical network. In order to provide better quality of service (QoS) than traditional n...

AI Technical Summary

Problems solved by technology

However, most of the existing protection technologies for passive optical networks still stay at the level of optical fiber protection, and the protection for carrying time-division multiplexing services in passive optical networks only exists in the central office equipment

However, this method has a small protection range and slow response speed and cannot meet the requirements of passive optical networks for full-service QoS guarantees.

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