Service protection method and device based on automatic switched optical network
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United States of America Patent
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Aug 12, 2014
Grant Date -
Apr 12, 2012
app pub date -
Jun 11, 2010
filing date -
Jun 17, 2009
priority date (Note) -
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Abstract
The present invention discloses a service protection method and device based on an automatic switched optical network (ASON), which are adapted to restoring a service when a fault occurs in the connection of the service. The method comprises: comparing a dynamic restoration lag time of the service with a protection switching lag time of the service; and starting a protection switching process to restore the service if the dynamic restoration lag time is greater than the protection switching lag time; and starting a dynamic re-routing process to restore the service if the protection switching lag time is greater than the dynamic restoration lag time. By the present invention, the reliability of the network is enhanced and the self-healing capacity of the ASON is improved.
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