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AssigneeCiena Corporation
InventorsAmit Kumar Choudhary, Krishan Singh, Sharad Kumar Srivastava, Hirdesh Srivastava
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Systems and methods are provided for selecting a clock source for synchronization recovery. According to one implementation, a method includes a step of receiving Master clock signals and source recovery indicators from upstream branches of a communications system, each source recovery indicator corresponding to a respective Master clock signal. Furthermore, the method includes a step of utilizing a prioritization strategy to prioritize the Master clock signals based on information derived from the source recovery indicators. During synchronization recovery, the method also includes a step of selecting one of the Master clock signals based on the prioritization strategy to act as a temporary synchronization source in a downstream branch of the communications system.
A Network Element (NE) arranged in a communications system between upstream branches and a downstream branch, the NE having a clock selection unit configured to:
A Master node arranged in an upstream branch of a communications system, the Master node configured to provide a clock signal and a source recovery indicator to a downstream Network Element (NE) that is configured to receive multiple clock signals and multiple source recovery indicators from multiple Master nodes operating on multiple upstream branches of the communications system, wherein the multiple source recovery indicators enable the NE to utilize a prioritization strategy to prioritize the multiple clock signals based on information derived from the multiple source recovery indicators, such that, during synchronization recovery, the NE is configured to select one of the multiple clock signals based on the prioritization strategy to act as a temporary synchronization source in a downstream branch of the communications system.
A method comprising steps of:
Dependencies are inferred from the claim text.