Ver- und Entschlüsselung in einem Passiven Optischen Netzwerk

Details

Veröffentlichungs-Nr.

EP4507216

Aktenzeichen

EP23190039

Anmeldetag

7. August 2023

Veröffentlichung

12. Februar 2025

Rechtsraum

EP

IPC

H04B10/272H04B10/50H04B10/60

Abstract

Example embodiments describe an optical network unit (210), ONU, configured to transmit data (232) to an optical line terminal (110), OLT, during upstream timeslots (201, 204, 206) within a passive optical network; wherein the ONU comprises a scrambler circuitry (220) configured to scramble (226, 227) at least one data stream (222, 223) according to a periodic scrambling pattern (228), and a descrambler circuitry (240) configured to descramble (243, 244) the at least one scrambled data stream (230, 231) according to the periodic scrambling pattern; and wherein the ONU further comprises at least one data channel (251, 252) for exchanging the at least one scrambled data stream between the scrambler circuitry and the descrambler circuitry; and wherein the scrambler circuitry is further configured to perform, during a period (203, 205) between the upstream timeslots: scrambling a predetermined reference sequence (221a, 221b) according to the periodic scrambling pattern, thereby obtaining a scrambled reference sequence; and sending the scrambled reference sequence to the descrambler circuitry over the at least one data channel.

Anmelder

Firma

Nokia Solutions and Networks Oy

Land

🇫🇮 Finnland

Fachgebiete