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:
Jun. 18, 2013
Filed:
Jan. 27, 2009
Michael Straub, Maulbronn, DE;
Harald Schmuck, Schwieberdingen, DE;
Lothar Jentsch, Fredersdorf, DE;
Jörg Hehmann, Weil der Stadt, DE;
Michael Straub, Maulbronn, DE;
Harald Schmuck, Schwieberdingen, DE;
Lothar Jentsch, Fredersdorf, DE;
Jörg Hehmann, Weil der Stadt, DE;
Alcaltel Lucent, Paris, FR;
Abstract
A method for monitoring a passive optical network (), PON, having a tree-like structure with a main line () and at least two branches (to), comprising: transmitting a wake-up signal () from the main line () to at least two monitoring units (DPMto DPM) arranged in the at least two branches (to), in each of the monitoring units (DPMto DPM), detecting the wake-up signal () and transmitting a response signal (A, B, C) back to the main line (), each of the monitoring units (DPMto DPM) generating a pre-defined time delay (Δtto Δt) between the detection of the wake-up signal () and the start of the transmission of the response signal (A, B, C), and receiving the response signals (A, B, C) at the main line (), the receiving times (Rto R) of the response signals (A, B, C) being different from each other, the difference between the receiving times (Rto R) being adjusted by the pre-defined time delays (Δtto Δt) of the monitoring units (DPMto DPM).