公开(公告)号：US09209923B2

公开(公告)日：2015-12-08

申请号：US14534874

申请日：2014-11-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-yeol Oh ,  Young Ha Lee

IPC: H04L27/28 ,  H04J11/00 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04J11/0023 ,  H04L5/0007 ,  H04L5/0041 ,  H04L5/006 ,  H04L27/2636 ,  H04L27/2646

Abstract: Provided is a transmitting apparatus including: a controller configured to determine a size of subchannels and a number of subchannels based on a size of entire channel band; and a DFT processor configured to spread a data symbol based on the number of the subchannels and the size of the subchannels.

Abstract translation: 提供了一种发送装置，包括：控制器，被配置为基于整个信道带的大小来确定子信道的大小和子信道的数量; 以及DFT处理器，被配置为基于子信道的数量和子信道的大小来扩展数据符号。

公开(公告)号：US11412317B2

公开(公告)日：2022-08-09

申请号：US16207300

申请日：2018-12-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-yeol Oh ,  Kyeong Hwan Doo

IPC: H04Q11/00 ,  H04B10/27 ,  H04B10/079 ,  G06N20/00 ,  G06N5/04 ,  H04L41/5022 ,  H04L47/80 ,  H04L47/6275 ,  G06N3/08 ,  G06N3/04

Abstract: A method and apparatus for allocating a bandwidth based on machine learning in a passive optical network, the method including generating an inference model to predict a consumed bandwidth required for transmission by learning unstructured data of a PON including an OLT and traffic data corresponding to state information of the PON collected from the PON, predicting a consumed bandwidth with respect to a queue corresponding to a class requiring a low-latency service among classes of ONUS connected to the OLT based on the generated inference model, performing a VBA with respect to the queue corresponding to the class requiring the low-latency service based on the predicted consumed bandwidth, and performing a DBA with respect to a queue corresponding to a class not requiring the low-latency service using a transmission bandwidth which remains after the VBA is performed.

公开(公告)号：US11233572B2

公开(公告)日：2022-01-25

申请号：US17103338

申请日：2020-11-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Han Hyub Lee ,  Jung-yeol Oh ,  Kwang Ok Kim ,  Kyeong Hwan Doo ,  Hwan Seok Chung

IPC: H04B10/27

Abstract: Disclosed is a slice connection method of an optical access network and an optical access network system for slice connection. A slice connection method performed by an optical network unit (ONU) of an optical access network system may include determining a service type of a host device transmitting a service connection request, determining a slice based on the service type, sending a request for connection to the slice to an optical line terminal (OLT), and relaying data transmission and reception between the OLT and the host device when a slice connection response corresponding to the request is received from the OLT.

公开(公告)号：US11515948B2

公开(公告)日：2022-11-29

申请号：US17520370

申请日：2021-11-05

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-yeol Oh ,  Kwang Ok Kim ,  Kyeong Hwan Doo ,  Han Hyub Lee ,  Hwan Seok Chung

IPC: H04B10/61 ,  H04B10/077

Abstract: Disclosed are a function split structure for a mobile convergence optical transmission network and a method of providing coordinated multi-point technology using the same. The mobile convergence optical transmission network may include a centralized unit (CU), a distributed unit (DU) connected to the CU, a transport node (TN) of an optical transmission network connected to the DU via a first interface, an aggregated unit (AU) connected to a transport unit (TU) of the optical transmission network via the first interface, and a radio unit (RU) connected to the AU via a second interface corresponding to a split structure for a lower layer than the first interface.

公开(公告)号：US12301281B2

公开(公告)日：2025-05-13

申请号：US17989844

申请日：2022-11-18

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung-yeol Oh ,  Hun Sik Kang ,  Sang Rok Moon

IPC: H04B10/079

Abstract: Provided are a method and apparatus for registering a new terminal using chromatic dispersion distance estimation. The method of registering a new terminal, performed by a transport unit (TU), includes performing frame synchronization through a downstream packet received from a transport node (TN), identifying a position of a frequency of a spectral null and a number of frequencies of spectral nulls through analysis on a frequency spectrum of the received downstream packet, estimating a transmission distance of an optical fiber to the TN, based on the identified position of the frequency of the spectral null and the identified number of frequencies of spectral nulls, and determining a timing of transmitting a registration request message, based on the estimated transmission distance, where the discovery information message is received from the TN.

公开(公告)号：US11212600B2

公开(公告)日：2021-12-28

申请号：US16952794

申请日：2020-11-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong Hwan Doo ,  Kwang Ok Kim ,  Jung-yeol Oh ,  Han Hyub Lee ,  Hwan Seok Chung

IPC: H04Q11/00 ,  H04J14/02 ,  H04J14/08

Abstract: An integrated dynamic bandwidth allocation method and apparatus in a passive optical network (PON) are provided. The bandwidth allocation method performed by an optical line terminal (OLT) includes generating a service level agreement (SLA) table including an SLA required for calculation for bandwidth allocation corresponding to at least one service queue included in at least one optical network unit (ONU) connected to the OLT, calculating maximum allocatable bandwidths for respective predetermined cycles based on the generated SLA table, and, when a service queue requiring bandwidth allocation is present in the ONU, performing bandwidth allocation according to different bandwidth allocation methods based on a priority level of the service queue using the calculated maximum allocatable bandwidths.

公开(公告)号：US11569911B2

公开(公告)日：2023-01-31

申请号：US17367944

申请日：2021-07-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kwang Ok Kim ,  Kyeong Hwan Doo ,  Jung-yeol Oh ,  Han Hyub Lee ,  Hwan Seok Chung

IPC: H04B10/27

Abstract: Disclosed is a method of registering a new optical network unit (ONU) to be performed by an optical line terminal (OLT). The method includes transmitting a ranging notification message to a centralized unit (CU)/distributed unit (DU) to register the new ONU, receiving scheduling information for registering the new ONU from the CU/DU in response to the ranging notification message, transmitting a serial number request message to a service region in which ONUs are present based on the received scheduling information, and when the serial number response message is received from the new ONU in response to the serial number request message, registering the new ONU that transmits a serial number request message. The transmitting of the serial number request message is performed through a multi-quiet zone of a short period.