公开(公告)号：US20240292133A1

公开(公告)日：2024-08-29

申请号：US18589560

申请日：2024-02-28

Applicant: Nokia Solutions and Networks Oy

Inventor： Michiel VERPLAETSE ,  Werner COOMANS

IPC: H04Q11/00

CPC classification number: H04Q11/0067 ,  H04Q2011/0086

Abstract: Example embodiments describe an optical line terminal (OLT) configured to communicate in a point-to-multipoint optical network with optical network units (ONUs); where upstream burst signals originating from one or more ONUs can be received by the OLT at any time during a time window. The OLT is configured to perform, during the time window, initiating a tuning cycle by starting the tuning of one or more burst receiver components within the OLT. The OLT is further configured to perform, if detecting a burst signal within a first period, extending the tuning cycle by a second period to continue the tuning of the one or more burst receiver components. The OLT is further configured to perform, if detecting at least pattern within the second period, extending the tuning cycle to decode the burst signal; else, terminating the tuning cycle by initiating a next tuning cycle.

公开(公告)号：US20240397243A1

公开(公告)日：2024-11-28

申请号：US18673902

申请日：2024-05-24

Applicant: Nokia Solutions and Networks Oy

Inventor： Michiel VERPLAETSE ,  Yannick LEFEVRE

IPC: H04Q11/00

Abstract: Example embodiments describe an optical line terminal, OLT, configured to communicate in a passive optical network with one or more optical network units, ONUs. Optical burst signals transmitted by the one or more ONUs have respective symbol rates. The optical line terminal includes a burst-mode receiver configured to decode an optical burst signal from an ONU to a decoded output signal by one or more digital signal processing circuitries that process a signal at respective configurable processing rates. The optical line terminal is configured to perform obtaining the symbol rate of a next optical burst signal; and adjusting, during an interval between reception of valuable symbols within a previous optical burst signal and reception of valuable symbols within the next optical burst signal, the configurable processing rate of one or more digital signal processing circuitries based on the symbol rate of the next optical burst signal.

公开(公告)号：US20240129652A1

公开(公告)日：2024-04-18

申请号：US18486751

申请日：2023-10-13

Applicant: Nokia Solutions and Networks Oy

Inventor： Michiel VERPLAETSE ,  Yannick LEFEVRE

IPC: H04Q11/00 ,  H04B10/508 ,  H04B10/524

CPC classification number: H04Q11/0067 ,  H04B10/508 ,  H04B10/524

Abstract: A method for transmitting a first segment of a first modulation format, a second segment of a second modulation format and a third segment of a third modulation format, wherein the second segment is transmitted between the first segment and the third segment, wherein the first modulation format includes a first set of constellation points, wherein the second modulation format includes a second set of constellation points, wherein the third modulation format includes a third set of constellation points, wherein the second set is included in an intersection of the first set and the third set, wherein the first set and the third set differ by at least one constellation point.

公开(公告)号：US20240113790A1

公开(公告)日：2024-04-04

申请号：US18477999

申请日：2023-09-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Michiel VERPLAETSE ,  Yannick LEFEVRE ,  Wouter LANNEER

IPC: H04B10/61 ,  H04Q11/00

CPC classification number: H04B10/616 ,  H04Q11/0067

Abstract: In one embodiment, the apparatus includes at least one memory configured to store instructions; and at least one processor configured to execute the instructions and cause the apparatus to perform, receiving, by a receiver in an Optical Line Terminal, OLT, a burst of an upstream signal transmitted in burst mode, adjusting settings for an analog signal conditioning of the received upstream signal; performing the analog signal conditioning of the received upstream signal based on the adjusted settings such that a first compensated signal is provided, obtaining coefficient(s) for a digital signal conditioning of the first compensated signal; performing the digital signal conditioning of the first compensated signal based on the obtained coefficient(s) such that a second compensated signal is provided.

公开(公告)号：US20250055670A1

公开(公告)日：2025-02-13

申请号：US18791992

申请日：2024-08-01

Applicant: Nokia Solutions and Networks Oy

Inventor： Eric VAN DEN BERG ,  Michiel VERPLAETSE

IPC: H04L9/00 ,  H04Q11/00

Abstract: Example embodiments describe an optical network unit, ONU, configured to transmit data to an optical line terminal, OLT, during upstream timeslots within a passive optical network; wherein the ONU includes a scrambler circuitry configured to scramble at least one data stream according to a periodic scrambling pattern, and a descrambler circuitry configured to descramble the at least one scrambled data stream according to the periodic scrambling pattern; and wherein the ONU further includes at least one data channel 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 between the upstream timeslots: scrambling a predetermined reference sequence 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.

公开(公告)号：US20240305917A1

公开(公告)日：2024-09-12

申请号：US18597337

申请日：2024-03-06

Applicant: Nokia Solutions and Networks Oy

Inventor： Yannick LEFEVRE ,  Laurens BREYNE ,  Michiel VERPLAETSE

IPC: H04Q11/00 ,  H04L1/00

CPC classification number: H04Q11/0067 ,  H04L1/0041 ,  H04L1/0071

Abstract: An apparatus configured to perform obtaining a stream of codewords, including a first type codeword and a second type codeword, wherein, the first type codeword is an idle codeword, and the second type codeword includes data intended for at least one of the ONUs; obtaining, an interleaved bitstream from the stream of codewords based on an interleaving scheme, wherein, in the interleaved bitstream, bits at positions corresponding the first type codeword include redundant bits, and bits at positions corresponding to the second type codeword include information bits; determining values for one or more redundant bits placed between two adjacent information bits in the interleaved bitstream based on the values of either or both of the two adjacent information bits; and transmitting the interleaved bitstream to one or more of the ONUs.

公开(公告)号：US20240322913A1

公开(公告)日：2024-09-26

申请号：US18610432

申请日：2024-03-20

Applicant: Nokia Solutions and Networks Oy

Inventor： Yannick LEFEVRE ,  Michiel VERPLAETSE ,  Wouter LANNEER

IPC: H04B10/69 ,  H04B10/079 ,  H04B10/27

CPC classification number: H04B10/6971 ,  H04B10/0795 ,  H04B10/27

Abstract: The present invention discloses an apparatus, comprising means for: determining a rate for a received signal in a passive optical network, PON; selecting, based on the determined rate, a set of coefficients for an equalizer from a plurality of predetermined sets of coefficients for the equalizer, wherein, the plurality of predetermined sets respectively corresponds to a plurality of rates; equalizing the received signal with the equalizer based on the selected set of coefficients, obtaining an equalized signal.