公开(公告)号：US10999891B2

公开(公告)日：2021-05-04

申请号：US16553606

申请日：2019-08-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyeong-Tae Kim ,  Jeong-Nyeo Kim ,  Seon-Gyoung Sohn ,  Yun-Kyung Lee ,  Jae-Deok Lim

IPC: H04W80/02 ,  H04W52/28 ,  H04W52/02 ,  H04W4/70

Abstract: A communication method and an IoT device in a multi-MAC (Media Access Control)-operating environment. The communication method in the multi-MAC-operating environment, including synchronous MAC and asynchronous MAC, includes periodically transmitting, by the IoT device included in the multi-MAC-operating environment, a first message to a first device; determining, by the IoT device, whether to transmit a second message; transmitting, by the IoT device, a preamble packet to a second device, to which the second message is to be transmitted, when the second message is determined to be transmitted; and transmitting, by the IoT device, the second message to the second device.

公开(公告)号：US11983160B2

公开(公告)日：2024-05-14

申请号：US17229423

申请日：2021-04-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Young-Ho Kim ,  Kyeong-Tae Kim ,  Jeong-Nyeo Kim ,  Seon-Gyoung Sohn ,  Yun-Kyung Lee ,  Jae-Deok Lim

IPC: H04L12/70 ,  G06F16/23 ,  H04L9/06 ,  H04L67/12

CPC classification number: G06F16/2365 ,  H04L9/0637 ,  H04L67/12

Abstract: Disclosed herein are an apparatus and method for providing sensor data in a sensor device based on a blockchain. A method for providing sensor data in a sensor device based on a blockchain may include creating a device record using encrypted device identification information, registering the device record in the blockchain, creating an event record using event information collected from a sensor, registering the header of the event record, including information about a link to the device record, in the blockchain, and distributing the body of the event record, the body being linked to the header of the event record.

公开(公告)号：US09385840B2

公开(公告)日：2016-07-05

申请号：US14253136

申请日：2014-04-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyeong-Tae Kim ,  Soo-Hyung Lee ,  Hyung-Kook Jun ,  Kyung-Il Kim ,  Yong-Yeon Kim ,  Won-Tae Kim

IPC: H04L1/14 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00

CPC classification number: H04L1/1685 ,  H04L1/18 ,  H04L2001/0093 ,  H04L2201/08

Abstract: Disclosed herein are a multicast apparatus and method. In the multicast method, a multicast apparatus searches one or more communication objects in a distributed network environment. Multicast data is received from a sender-side communication object among the one or more communication objects. A polling message is received from the communication object that transmitted the multicast data. A response message corresponding to the polling message is sent. It is determined whether a transmission error has occurred between communication objects based on results of sending of the response message, and multicasting is performed based on results of determination.

Abstract translation: 这里公开了多播设备和方法。 在组播方法中，组播装置在分布式网络环境中搜索一个或多个通信对象。 从一个或多个通信对象中的发送方侧通信对象接收组播数据。 从发送组播数据的通信对象接收到轮询消息。 发送对应于轮询消息的响应消息。 基于响应消息的发送结果确定通信对象之间是否发生了传输错误，并且基于确定的结果执行多播。

公开(公告)号：US10932281B2

公开(公告)日：2021-02-23

申请号：US16044330

申请日：2018-07-24

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kyeong-Tae Kim ,  Bum-Ho Kim ,  Sang-Cheol Kim ,  Seon-Tae Kim ,  Hae-Yong Kim ,  Yu-Seung Ma ,  Pyeong-Soo Mah ,  Hui-Ung Park ,  Duk-Kyun Woo ,  Jeong-Woo Lee

IPC: H04W72/12 ,  H04W72/04 ,  H04L12/26 ,  H04W72/10 ,  H04W72/08 ,  H04W84/18

Abstract: Disclosed herein are a dynamic scheduling method for guaranteeing Quality of Service QoS depending on network transmission traffic and a system using the same. The dynamic scheduling method includes assigning communication channels to respective nodes based on Identifications (IDs) of parent nodes corresponding to the respective nodes, setting priorities for assignment of time slots to the respective nodes in each quarter based on data traffic volumes corresponding to the respective nodes, and assigning time slots to the respective nodes in each quarter depending on the set priorities for assignment of the time slots.

公开(公告)号：US09577837B2

公开(公告)日：2017-02-21

申请号：US14293580

申请日：2014-06-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Soo-Hyung Lee ,  Hyung-Kook Jun ,  Kyung-II Kim ,  Kyeong-Tae Kim ,  Je-Man Park ,  Yong-Yeon Kim ,  Won-Tae Kim

IPC: H04L12/18

CPC classification number: H04L12/1854 ,  H04L12/1881

Abstract: Disclosed herein are an apparatus and method for discovering a communication entity. The apparatus for discovering a communication entity includes a list generation unit for generating a list of connection target Data Readers (DRs), a counter generation unit for generating a counter including information about a number of the connection target DRs, and a discovery message communication unit for establishing communication connections to the connection target DRs based on the list and the counter. The discovery message communication unit includes a transmission unit for transmitting a DR discovery message including data topic information or possible service quality information to each of the connection target DRs, and a reception unit for receiving a Data Writer (DW) discovery message including data topic information or possible service quality information from each of the connection target DRs.

Abstract translation: 这里公开了一种用于发现通信实体的装置和方法。 用于发现通信实体的装置包括用于生成连接目标数据读取器（DR）的列表的列表生成单元，用于生成包括关于连接目标DR的数量的信息的计数器的计数器生成单元，以及发现消息通信单元 用于基于列表和计数器建立到连接目标DR的通信连接。 发现消息通信单元包括发送单元，用于向每个连接目标DR发送包括数据主题信息或可能的服务质量信息的DR发现消息，以及接收单元，用于接收包括数据主题信息的数据写入器（DW）发现消息 或来自每个连接目标DR的可能的服务质量信息。