公开(公告)号：KR1020140071520A

公开(公告)日：2014-06-12

申请号：KR1020120115004

申请日：2012-10-16

Applicant: 한국전자통신연구원

Inventor： 정종수 ,  이지훈

IPC: H04L12/70

CPC classification number: H04W24/02 ,  H04W52/0225 ,  Y02D70/144

Abstract: Disclosed are a duty cycle control method and apparatus to mitigate latency for duty cycle wireless low-power medium access control (MAC). The duty cycle control method according to an embodiment of the present invention can control a duty cycle depending on traffic conditions in the asynchronous duty cycle-based low-power MAC to mitigate the packet transmission latency between nodes without significant damage of unique low power characteristics.

Abstract translation: 公开了一种用于减轻占空比无线低功率媒体访问控制（MAC）的等待时间的占空比控制方法和装置。 根据本发明的实施例的占空比控制方法可以根据基于异步占空比的低功率MAC中的业务条件来控制占空比，以减轻节点之间的分组传输等待时间，而不会对独特的低功率特性造成显着的损害。

公开(公告)号：KR1020130022038A

公开(公告)日：2013-03-06

申请号：KR1020110084697

申请日：2011-08-24

Applicant: 한국전자통신연구원

Inventor： 송준근 ,  김진삼 ,  차우석 ,  우덕균 ,  김선태 ,  김해용 ,  정종수

IPC: H04W74/08 ,  H04B7/26

CPC classification number: H04W74/085 ,  H04W74/0816

Abstract: PURPOSE: A collision avoidance method in a wireless network and an apparatus thereof are provided to reduce collision probability in an environment in which wireless data is periodically transmitted in a CSMA/CA(Carrier Sensing Multiple Access/Collision Avoidance) method. CONSTITUTION: A first node(201) receives data from a second node(202). The first node determines history receiving data from the second node. When the first node determines the receiving number of the data, the first node determines the data transmission period of the second node. The first node determines a data transmission period by using information such as an IFS(Inter Frame Spacing), preamble, and back-off slot time. [Reference numerals] (201) First node; (202) Second node; (203) Third node

Abstract translation: 目的：提供一种无线网络中的防撞方法及其装置，以减少在CSMA / CA（载波侦听多路访问/冲突避免）方法中周期性地发送无线数据的环境中的冲突概率。 构成：第一节点（201）从第二节点（202）接收数据。 第一节点确定从第二节点接收数据的历史。 当第一节点确定数据的接收号码时，第一节点确定第二节点的数据传输周期。 第一节点通过使用诸如IFS（帧间间隔），前导码和退避时隙时间的信息来确定数据传输周期。 （附图标记）（201）第一节点; （202）第二节点; （203）第三节点

公开(公告)号：KR1020110088012A

公开(公告)日：2011-08-03

申请号：KR1020100007715

申请日：2010-01-28

Applicant: 한국전자통신연구원

Inventor： 정종수 ,  김재석

IPC: B62D41/00 ,  G01D9/00

Abstract: PURPOSE: An apparatus for collecting accident image data of a vehicle is provided to secure objective evidence by collecting accident image data from surrounding vehicles. CONSTITUTION: An apparatus for collecting accident image data of a vehicle comprises a sensor unit(120a), a control unit(130a), a communication unit(140a), and a storage unit(150a). The sensor unit performs sensing and generates sensing information. The control unit confirms whether the accident of a vehicle is occurred or not by analyzing the sensing information and generates accident image data request message. The communication unit transmits the accident image data request message to surrounding vehicles and receives a response message from the surrounding vehicles. The storage unit stores accident image data contained in the response message.

Abstract translation: 目的：提供一种用于收集车辆事故图像数据的装置，通过从周围车辆收集事故图像数据来确保客观证据。 构成：用于收集车辆事故图像数据的装置包括传感器单元（120a），控制单元（130a），通信单元（140a）和存储单元（150a）。 传感器单元执行感测并产生感测信息。 控制单元通过分析感测信息来确认车辆的事故是否发生，并且生成事故图像数据请求消息。 通信单元将事故图像数据请求消息发送给周围车辆，并从周围车辆接收响应消息。 存储单元存储包含在响应消息中的事故图像数据。