The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 2018
Filed:
Sep. 28, 2015
Futurewei Technologies, Inc., Plano, TX (US);
Dekun Liu, Wuhan, CN;
Frank Effenberger, Colts Neck, NJ (US);
Yuanqiu Luo, Cranbury, NJ (US);
Jianhe Gao, Wuhan, CN;
Futurewei Technologies, Inc., Plano, TX (US);
Abstract
An optical line terminal (OLT) comprises a processor configured to designate an extended quiet window having a start time and a stop time. The processor may be further configured to suspend upstream transmission during the extended quiet window. The OLT further comprises a transmitter that transmits a serial number (SN) grant to an optical network unit (ONU) during the extended quiet window. Upon receiving the SN grant, the ONU may transmit a plurality of calibration request messages during the extended quiet window. Each of the calibration request messages correspond to a different attempt wavelength. The OLT may receive one of the calibration request messages at a successful attempt wavelength. The OLT transmits a calibration response message identifying the successful attempt wavelength.