Packet-optical combined switching system and protection switching method thereof
AssigneeElectronics and Telecommunications Research Institute
InventorsKi Won KIM, Ho Young SONG, You Hyeon JEONG
Life of this patent
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Abstract
A protection switching method of packet-optical combined switching system in accordance with the inventive concept may include detecting whether or not an obstacle occurs in a packet path; performing a first protection switching using a preliminary path if an obstacle is detected from the packet path; generating an imaginary preliminary path using a preliminary resource of optical path when the first protection switching is failed; and performing a second protection switching using the imaginary preliminary path.
Claims13
A protection switching method of packet-optical combined switching system comprising:
- detecting whether or not an obstacle occurs in a packet path;
- performing a first protection switching using a preliminary path if an obstacle is detected from the packet path;
- generating an imaginary preliminary path using a preliminary resource of optical path when the first protection switching is failed;
- and
- performing a second protection switching using the imaginary preliminary path.
A packet-optical combined switching system comprising:
- a plurality of packet-optical combined switches;
- and
- a protection restoration control device controlling a protection switching for packet path or optical path of each of the plurality of packet-optical combined switches,
- wherein the protection restoration control device generates an imaginary preliminary path using a preliminary resource of the optical path when an obstacle occurs in the packet path and performs a protection switching for the packet path using the generated the preliminary path.
Dependencies are inferred from the claim text.