US 12,003,611 B2
Method for establishing communication in an optical access network
Anthony Reuche, Rueil Malmaison (FR)
Assigned to SAGEMCOM BROADBAND SAS, Bois-Colombes (FR)
Filed by SAGEMCOM BROADBAND SAS, Rueil Malmaison (FR)
Filed on Jun. 16, 2021, as Appl. No. 17/349,442.
Claims priority of application No. 2006589 (FR), filed on Jun. 24, 2020.
Prior Publication US 2021/0409187 A1, Dec. 30, 2021
Int. Cl. H04B 10/00 (2013.01); H04B 10/2581 (2013.01); H04B 10/27 (2013.01); H04B 10/40 (2013.01); H04L 7/00 (2006.01)
CPC H04L 7/0075 (2013.01) [H04B 10/2581 (2013.01); H04B 10/27 (2013.01); H04B 10/40 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for putting an optical network unit (“ONU”) in communication with optical line termination (“OLT”) equipment in an optical access network offering various transport systems, the method causing:
the ONU to configure itself to communicate by means of a first transport system among at least two transport systems that are supported by the ONU wherein the ONU is a single ONU that supports the at least two transport systems, where each transport system is a communication set comprising a dedicated protocol, and said at least two transport systems are supervised by a protocol layer supervising any transport system of the optical access network;
the ONU to start a synchronisation with the OLT equipment for the first transport system;
the ONU to transmit, via the protocol layer supervising any transport system of the optical access network, without waiting for the synchronisation with the OLT equipment for the first transport system to have ended, information dependent on an identifier of the ONU and an identifier of the first transport system;
when the transport system to be used by ONU is not the first transport system, the protocol layer supervising any transport system of the optical access network at the OLT equipment interrupts the synchronisation, and the ONU reattempts the synchronisation with a second transport system among the transport systems supported by the ONU;
when the transport system to be used by the ONU is the first transport system, the OLT equipment continues the synchronisation for the first transport system until the ONU is put in communication in the optical access network.