(19)
(11) EP 4 165 800 A1

(12)

(43) Date of publication:
19.04.2023 Bulletin 2023/16

(21) Application number: 20733234.7

(22) Date of filing: 10.06.2020
(51) International Patent Classification (IPC): 
H04B 10/079(2013.01)
(52) Cooperative Patent Classification (CPC):
H04B 10/0791; H04B 10/07953; H04B 10/07955; H04B 10/0793
(86) International application number:
PCT/EP2020/066142
(87) International publication number:
WO 2021/249639 (16.12.2021 Gazette 2021/50)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicant: Telefonaktiebolaget LM ERICSSON (PUBL)
16483 Stockholm (SE)

(72) Inventors:
  • CECCATELLI, Riccardo
    16152 Genova (IT)
  • AGOSTINI, Giacomo
    16152 Genova (IT)
  • MAGRI, Roberto
    16152 Genova (IT)
  • PARODI, Stefano
    16152 Genova (IT)
  • RISSO, Luca
    16152 Genova (IT)
  • VALERI, Marina
    16152 Genova (IT)

(74) Representative: Ericsson 
Patent Development Torshamnsgatan 21-23
164 80 Stockholm
164 80 Stockholm (SE)

   


(54) FAULT LOCATION IN AN OPTICAL RING NETWORK