Patent ID: 7756419

Claim:
A traffic signal node cross scheduling method, comprising: decomposing, by a first wavelength convergence/de-convergence module, a multi-wavelength signal into multiple first single-wavelength signals; splitting, by a first wavelength processing unit, a first single-wavelength signal into multiple low-rate signals if it is determined that wavelength scheduling needs to be performed for the first single-wavelength signal; scheduling, by a scheduling matrix, the multiple low-rate signals according to a uniform path; converging, by a second wavelength processing unit, the multiple low-rate signals after scheduled into the first single-wavelength signal before the first single-wavelength signal is split; decomposing, by the first wavelength processing unit, the first single-wavelength signal into multiple sub-wavelength traffics if it is determined that the first single-wavelength signal includes multiple sub-wavelength traffics and there is at least one sub-wavelength traffic needing to be scheduled at a current node; scheduling, by the scheduling matrix, each of the multiple sub-wavelength traffics independently; and converging, by the second wavelength processing unit, the multiple sub-wavelength traffics which have been scheduled and do not need to be downloaded at the current node and sub-wavelength traffics uploaded at the current node into a second single-wavelength signal.