公开(公告)号：US20230079658A1

公开(公告)日：2023-03-16

申请号：US17690861

申请日：2022-03-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Mi-Ryong PARK ,  Dae Ho KIM ,  Jung Sik SUNG ,  Seung Sik LEE

IPC: G01S5/00 ,  G01S5/02 ,  H04B17/318

Abstract: An Internet of Things (IoT) device, receives, from an Access Point (AP), a beacon signal including unique identifier information of the AP, which is generated based on position coordinates of each position while at least one mobile robot equipped with the AP moves; records an RSSI value, unique identifier information of the AP, and the position coordinates from each of the received beacon signals in a reception list table; selects the best three or more RSSI values in the reception list table; calculates distances to three or more APs respectively corresponding to the three or more RSSI values by using the three or more RSSI values; and estimates the position of the IoT device by using the distances to the three or more APs.

公开(公告)号：US20240205145A1

公开(公告)日：2024-06-20

申请号：US18537998

申请日：2023-12-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jabeom GU ,  Hoyong KANG ,  Mi-ryong PARK ,  Seung Sik LEE

IPC: H04L45/00 ,  H04L67/00

CPC classification number: H04L45/563 ,  H04L67/34 ,  H04W84/20

Abstract: A method of updating firmware of a router and a terminal node in a multi hop-based IoT wireless network system including an access point, routers, and terminal nodes, the access point, the router, and the terminal node each functioning as an OTA master in the case of a parent node, and functioning as an OTA slave in the case of a child node, the method including: determining whether the OTA master is ready to download firmware of the OTA slaves connected to the OTA master;
downloading firmware data to the OTA slave that is ready to download the firmware in units of blocks; determining firmware data blocks that need to be resent, to resend and download the firmware data blocks to the OTA slave; and when the OTA master determines that resending the firmware data blocks is completed, determining that firmware download of all the OTA slaves is completed.

公开(公告)号：US20250053410A1

公开(公告)日：2025-02-13

申请号：US18797876

申请日：2024-08-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Sik LEE ,  Ho Yong KANG ,  Ja Beom GU ,  Dae Ho KIM ,  Jung Sik SUNG ,  Jun Hee LEE

IPC: G06F8/65

Abstract: A firmware upgrade apparatus and method are disclosed. A firmware upgrade apparatus according to some embodiments of the present invention includes access points, a relay configured to upload firmware data to the access point, a node configured to upload the firmware data to the relay, and an over-the-air (OTA) access point configured to upload the firmware data to the node.

公开(公告)号：US20130303091A1

公开(公告)日：2013-11-14

申请号：US13741940

申请日：2013-01-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Sik LEE ,  Sangsung CHOI ,  Jae Young KIM ,  Young Ae JEON ,  cheol-ho SHIN ,  Sangjae LEE ,  Byoung Hak KIM ,  Jaehwan KIM ,  Mi Kyung OH

IPC: H04B1/40

CPC classification number: H04B1/40 ,  H04B1/44

Abstract: A high frequency transmitting and receiving apparatus of a wireless communication system low-noise amplifies a signal that is received from a transmitting and receiving antenna through a low noise amplifier in a reception mode, and amplifies a signal be transmitted through a power amplifier in a transmission mode and transmits the signal through the transmitting and receiving antenna, and the high frequency transmitting and receiving apparatus is connected between the transmitting and receiving antenna and the low noise amplifier and turns on a switch in a reception mode and turns off the switch in a transmission mode, thereby separating transmitting and receiving signals.

Abstract translation: 无线通信系统的高频发送和接收装置以接收模式通过低噪声放大器低噪声地放大从发送和接收天线接收的信号，并且放大在发送中通过功率放大器发送的信号 模式，并通过发送和接收天线发送信号，并且高频发射和接收设备连接在发射和接收天线与低噪声放大器之间，并以接收模式接通开关，并在传输中关闭开关 模式，从而分离发送和接收信号。