公开(公告)号：US20140003344A1

公开(公告)日：2014-01-02

申请号：US13921777

申请日：2013-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bong Soo KIM

IPC: H04L12/801

CPC classification number: H04L47/34 ,  H04L45/18 ,  H04W40/00

Abstract: Provided is a session-based broadcasting method that may transmit a message packet from a source node to a plurality of destination nodes out of a radio coverage, in a wireless network including a plurality of sensor nodes and active radio frequency identification (RFID) devices, and more particularly, an apparatus and method for multi-hop routing decision and looping prevention that may (1) determine a scope of multi-hop routing for receiving a response packet from a destination node within a predetermined session open duration, and (2) prevent a looping phenomenon in which nodes continuously receive and re-transmit message packets, due to a characteristic of a broadcasting communication scheme through which all users may receive message packets.

Abstract translation: 提供了一种基于会话的广播方法，其可以在包括多个传感器节点和有源射频识别（RFID）设备的无线网络中将消息分组从源节点传送到无线电覆盖的多个目的地节点， 更具体地，涉及一种用于多跳路由决策和循环预防的装置和方法，其可以（1）确定用于在预定会话打开持续时间内从目的地节点接收响应分组的多跳路由的范围，以及（2） 由于广播通信方式的特征，所有用户都可以接收消息包，从而防止节点连续接收和重发消息分组的循环现象。

公开(公告)号：US20230324930A1

公开(公告)日：2023-10-12

申请号：US18182574

申请日：2023-03-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Moon Sung PARK ,  Bong Soo KIM ,  Dong-Gil NA ,  Yeong-Woong YU ,  Hoon JUNG

IPC: G05D1/10 ,  B64D45/00 ,  G08G5/00 ,  G05D1/00

CPC classification number: G05D1/106 ,  B64D45/00 ,  B64U10/00 ,  G08G5/0069 ,  G05D1/0011 ,  G08G5/0034

Abstract: Provided are a method of controlling safety of an Unmanned Aerial Vehicle (UAV) and a system for performing the method. The method of controlling the safety includes identifying a failure of a UAV for each of a plurality of mission performance operations of the UAV, based on status data of the UAV received in real time from the UAV and past flight performance data of a case where the UAV normally performs a mission and controlling safety of the UAV based on the failure for each of the plurality of mission performance operations and a risk level of the failure. The status data may include component operation status data of the UAV, power status data of the UAV, and communication connection status data of the UAV.

公开(公告)号：US20250142376A1

公开(公告)日：2025-05-01

申请号：US18927071

申请日：2024-10-25

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Keun PARK ,  Sung Jun LEE ,  Bong Soo KIM ,  Jae Ho JUNG ,  Byung Su KANG ,  Hye Yeon KWON ,  Igor KIM ,  Kwang Chun LEE

IPC: H04W24/08 ,  H04W48/10 ,  H04W52/36 ,  H04W84/12 ,  H04W88/08

Abstract: A wireless system including a wireless station and an automatic frequency adjustment system and a method for controlling the same are disclosed. According to one embodiment of the present disclosure, the wireless system may include a wireless station including a beacon demodulator and an automatic frequency adjustment system having a database including identification information of a plurality of wireless local area network (LAN) access points (Aps), and the wireless station may be configured to: obtain information related to a first beacon frame by demodulating the first beacon frame transmitted from a first wireless LAN AP through the beacon demodulator and transmit the information related to the first beacon frame to the automatic frequency adjustment system.