US 12,483,346 B2
Data secrecy method for submarine cable system with failure and submarine cable system
Xiaoyong Qin, Tianjin (CN); Li Yang, Tianjin (CN); and Jianping Li, Tianjin (CN)
Assigned to HMN Technologies Co., Limited, Tianjin (CN)
Filed by HMN Technologies Co., Limited, Tianjin (CN)
Filed on Oct. 26, 2023, as Appl. No. 18/384,077.
Claims priority of application No. 202310860532.1 (CN), filed on Jul. 14, 2023.
Prior Publication US 2025/0023654 A1, Jan. 16, 2025
Int. Cl. H04B 10/00 (2013.01); H02G 1/10 (2006.01); H04J 14/02 (2006.01); H04J 14/00 (2006.01)
CPC H04J 14/0212 (2013.01) [H02G 1/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A data secrecy method for a submarine cable system with a failure, applicable to a submarine cable system, wherein the submarine cable system comprises:
a first terminal station, a second terminal station, a trunk submarine cable connected between the first terminal station and the second terminal station, and at least one branching unit disposed on the trunk submarine cable, wherein each of the least one branching unit is connected to one branch, and each branch comprises a branch submarine cable connected to the branching unit and a branch station connected to the branch submarine cable, wherein the method comprises:
determining a first disaster tolerance set in response to that a failure occurs to a first branch, wherein the first branch is any branch in the submarine cable system, the first disaster tolerance set comprises at least one wavelength used for optical signals for transfer from the first terminal station to a first branch station, and the first branch station is a branch station on the first branch; and
replacing a target optical signal in a first optical signal with a virtual optical signal, wherein the first optical signal is an optical signal output from the first terminal station, the target optical signal comprises optical signals corresponding to the respective wavelengths in the first disaster tolerance set, the virtual optical signal is an optical signal that does not carry data content, and the virtual optical signal has a wavelength same as that of the target optical signal.