US 12,356,127 B2
Port detection method and apparatus
Huafeng Lin, Dongguan (CN); Enyu Zhou, Dongguan (CN); and Xiaofei Zeng, Shenzhen (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 10, 2022, as Appl. No. 17/984,325.
Application 17/984,325 is a continuation of application No. PCT/CN2020/132607, filed on Nov. 30, 2020.
Claims priority of application No. 202010392962.1 (CN), filed on May 11, 2020.
Prior Publication US 2023/0079705 A1, Mar. 16, 2023
Int. Cl. H04Q 11/00 (2006.01); H04B 10/61 (2013.01)
CPC H04Q 11/0067 (2013.01) [H04B 10/614 (2013.01); H04Q 2011/0079 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method, wherein the method comprises:
sending, by an optical line termination (OLT), optical signals of M wavelengths to at least one optical network unit (ONU), wherein the M wavelengths are different from each other, and M is an integer greater than 1;
receiving, by the OLT, at least one piece of feedback information sent by a first ONU in the at least one ONU, wherein the at least one piece of feedback information indicates optical power values of the optical signals of the M wavelengths received by the first ONU;
determining, by the OLT, based on magnitudes of the optical power values of the optical signals of the M wavelengths, R wavelengths corresponding to the first ONU, wherein R is an integer greater than or equal to 2; and
determining, by the OLT, based on at least two wavelengths of the R wavelengths, port information of a first optical splitter corresponding to the first ONU, wherein a first branch port of the first optical splitter corresponds to the at least two wavelengths, and wherein M is less than a total number of branch ports of the first optical splitter.