US 12,081,926 B2
Apparatus and a method for transmitting and receiving in a passive optical network
Yannick Lefevre, Heverlee (BE); Wouter Lanneer, Antwerp (BE); and Werner Coomans, Zellik (BE)
Assigned to Nokia Solutions and Networks Oy, Espoo (FI)
Filed by Nokia Solutions and Networks Oy, Espoo (FI)
Filed on Sep. 21, 2022, as Appl. No. 17/949,553.
Claims priority of application No. 21198702 (EP), filed on Sep. 24, 2021.
Prior Publication US 2023/0100191 A1, Mar. 30, 2023
Int. Cl. H04B 10/00 (2013.01); H04J 14/02 (2006.01); H04Q 11/00 (2006.01); H04B 10/27 (2013.01); H04J 14/00 (2006.01)
CPC H04Q 11/0067 (2013.01) [H04J 14/0282 (2013.01); H04B 10/27 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for use in a transmitter of a passive optical network, PON, wherein the method comprises:
sending a first frame of a first modulation format that is suitable for a first group of receivers;
sending a second frame of a second modulation format that is suitable for a second group of receivers, wherein the first modulation format is a higher modulation format than the second modulation format; and
inserting into the first frame at least one symbol of the second modulation format at at least one outer edge of the first frame.