公开(公告)号：US11063670B2

公开(公告)日：2021-07-13

申请号：US16709994

申请日：2019-12-11

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Xiaofeng Hu ,  Kaibin Zhang

IPC: H04B10/524 ,  H04B10/25 ,  H04B10/66

Abstract: Embodiments are disclosed of methods performed at an optical transmitter, devices and computer-readable storage media. For example, the method includes performing a process to select a PAM value from a set of candidate PAM values based on currently transmitted training data bits, transmitted Pulse Amplitude Modulation (PAM) values corresponding to previously transmitted training data bits, and training data bits to be transmitted subsequently, the selected PAM value corresponding to the currently transmitted training data bits. The selected PAM value is transmitted to an optical receiver, and an indication as to whether the optical receiver correctly detects the currently transmitted training data bits is received from the optical receiver. Then, the process is updated at least in part based on the indication. The manner of performing neural network learning at an optical transmitter side to obtain an encoding strategy can maximize the channel allowable capacity.

公开(公告)号：US12126947B2

公开(公告)日：2024-10-22

申请号：US17562253

申请日：2021-12-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Dongxu Zhang ,  Chenhui Ye ,  Dan Geng

IPC: H04Q11/00

CPC classification number: H04Q11/0067 ,  H04Q2011/0064

Abstract: In response to a first channel associated with a first OLT and a second channel associated with a second OLT being enabled for target traffic, a traffic scheduler for scheduling the target traffic is determined by the first OLT. The first channel and the second channel correspond to a first wavelength and a second wavelength, respectively. The first OLT transmits channel configurations and offset information to an ONU, based on scheduling of a first group of data units and a second group of data units of the target traffic by the traffic scheduler on the first channel and the second channel, respectively. The channel configurations indicate channel identifications associated with the first channel and the second channel, and the offset information indicates timing information of the first group of data units and the second group of data units corresponding to physical frames transmitted on the first and second channels.

公开(公告)号：US11632182B2

公开(公告)日：2023-04-18

申请号：US17151874

申请日：2021-01-19

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Xiaofeng Hu ,  Kaibin Zhang

IPC: H04B17/345 ,  H04B17/27 ,  H04K3/00

Abstract: In the method, a first device receives a mixed signal including a target signal from a target device among a plurality of second devices and an interfering signal from the plurality of second devices. The first device determines a distribution characteristic of an amplitude of the mixed signal within an amplitude variation range, the distribution characteristic being associated with the target device and an interfering device generating the interfering signal. The first device determines the interfering device from the plurality of second devices based on the distribution characteristic. An interfering device in a communication system may be detected in real-time and accurately.

公开(公告)号：US20210091979A1

公开(公告)日：2021-03-25

申请号：US16975912

申请日：2019-02-27

Applicant: NOKIA SHANGHAI BELL CO., LTD. ,  NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Chenhui Ye ,  Xiaofeng Hu ,  Dongxu Zhang ,  Kaibin Zhang

IPC: H04L25/03

Abstract: Embodiments of the present disclosure provide a method, device, and computer readable medium for channel equalization. The method comprises receiving, at a first device, a first signal from a second device via a plurality of subcarriers over a communication channel; sampling the first signal to obtain sampled symbols; and generating a second signal based on the obtained sampled symbols using a direct association between sampled symbols and payloads, the second signal indicating a payload of the first signal carried on an effective subcarrier of the plurality of subcarriers. Through the use of the direct association between sampled symbols and payloads, it is possible to achieve channel equalization in a less complicated, more reliable, and cost-effective manner, so as to extract the payload in the received signal.

公开(公告)号：US12088975B2

公开(公告)日：2024-09-10

申请号：US17562253

申请日：2021-12-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Dongxu Zhang ,  Chenhui Ye ,  Dan Geng

IPC: H04Q11/00

CPC classification number: H04Q11/0067 ,  H04Q2011/0064

Abstract: In response to a first channel associated with a first OLT and a second channel associated with a second OLT being enabled for target traffic, a traffic scheduler for scheduling the target traffic is determined by the first OLT. The first channel and the second channel correspond to a first wavelength and a second wavelength, respectively. The first OLT transmits channel configurations and offset information to an ONU, based on scheduling of a first group of data units and a second group of data units of the target traffic by the traffic scheduler on the first channel and the second channel, respectively. The channel configurations indicate channel identifications associated with the first channel and the second channel, and the offset information indicates timing information of the first group of data units and the second group of data units corresponding to physical frames transmitted on the first and second channels.

公开(公告)号：US11516053B2

公开(公告)日：2022-11-29

申请号：US16975912

申请日：2019-02-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Xiaofeng Hu ,  Dongxu Zhang ,  Kaibin Zhang

IPC: H04L25/03

Abstract: Embodiments of the present disclosure provide a method, device, and computer readable medium for channel equalization. The method comprises receiving, at a first device, a first signal from a second device via a plurality of subcarriers over a communication channel; sampling the first signal to obtain sampled symbols; and generating a second signal based on the obtained sampled symbols using a direct association between sampled symbols and payloads, the second signal indicating a payload of the first signal carried on an effective subcarrier of the plurality of subcarriers. Through the use of the direct association between sampled symbols and payloads, it is possible to achieve channel equalization in a less complicated, more reliable, and cost-effective manner, so as to extract the payload in the received signal.

公开(公告)号：US11356182B2

公开(公告)日：2022-06-07

申请号：US17137475

申请日：2020-12-30

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Xiaofeng Hu ,  Kaibin Zhang

IPC: H04Q11/00 ,  H04B10/69

Abstract: Embodiments of the present disclosure relate to a device, a method, an apparatus and a computer-readable medium for signal equalization. According to the embodiments of the present disclosure, a balance between equalization performance and effects is achieved by using a linear equalizer and a nonlinear equalizer. In addition, signals from different uplinks are equalized using adaptive parameters, to achieve optimal equalization of various signals.

公开(公告)号：US11515944B2

公开(公告)日：2022-11-29

申请号：US17488918

申请日：2021-09-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Dongxu Zhang ,  Dan Geng ,  Werner Van Hoof

IPC: H04Q11/00 ,  H04B10/27

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of ONU activation for OLT Equalizer training. The method includes determining, at OLT, configuration information indicating a bandwidth allocation dedicated for an ONU and a first target preamble sequence associated with the bandwidth allocation, the first target preamble sequence to be used by the ONU for a transmission from the ONU to the OLT on a first wavelength; transmitting the configuration information to the ONU; and receiving the transmission from the ONU from the ONU on the first wavelength, the transmission is performed by the ONU based on the first target preamble sequence.

公开(公告)号：US20220217456A1

公开(公告)日：2022-07-07

申请号：US17562253

申请日：2021-12-27

Applicant: Nokia Solutions and Networks Oy

Inventor： Dongxu Zhang ,  Chenhui Ye ,  Dan Geng

IPC: H04Q11/00

Abstract: In response to a first channel associated with a first OLT and a second channel associated with a second OLT being enabled for target traffic, a traffic scheduler for scheduling the target traffic is determined by the first OLT. The first channel and the second channel correspond to a first wavelength and a second wavelength, respectively. The first OLT transmits channel configurations and offset information to an ONU, based on scheduling of a first group of data units and a second group of data units of the target traffic by the traffic scheduler on the first channel and the second channel, respectively. The channel configurations indicate channel identifications associated with the first channel and the second channel, and the offset information indicates timing information of the first group of data units and the second group of data units corresponding to physical frames transmitted on the first and second channels.

公开(公告)号：US11303482B2

公开(公告)日：2022-04-12

申请号：US16759136

申请日：2018-10-24

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui Ye ,  Dongxu Zhang ,  Kaibin Zhang

IPC: H04L25/08 ,  H04B1/38

Abstract: Embodiments of the present disclosure provide a signal processing apparatus and method, a network device and a computer readable storage medium. The apparatus comprises: a receiving unit configured to receive a signal from a remote radio frequency unit (RRH), the RRH being independent from the signal processing apparatus; a processing unit configured to perform signal enhancement on the signal; and a transmitting unit configured to transmit the enhanced signal to a baseband unit (BBU). According to the present disclosure, it is possible to implement a fronthaul or anyhaul solution with a high reliability, and meanwhile save the RF transmission power of the terminal device and reduce the operation costs of the operators.