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Fault Tolerant Lightweight flooding algorithm in Wireless Sensor Networks
Changguk Lee,Jaiyong Lee 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
In the large scale wirless networks each node has heavy route error state. To improve ene to end successful transferred packet rates, we propose fault tolerant lightweight flooding algorithm(LWF). LWF reduces energy consumption using Region Master(RM) compared with general flooding scheme. And LWF also improves end to end delay compared with on-demand routing schemes.
End to End ZigBee Home Network Security Solutions
Changguk Lee,Jaiyong Lee,Woochool Park,Mynghyun Yoon,Sunghyun Yang 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
ZigBee home network service is expected to fill every aspect of our lives and play increasingly important roles. ZigBee is designed to support low cost and battery powered applications. So ZigBee nodes have small memory and insufficient computation capability to support heavy data handling. In this paper, we presents a systematic analysis of the threats faced by IEEE 802.15.4 and the ZigBee Alliance. Attack scenarios are models and their impacts are evaluated. Some security problems within the current ZigBee security architecture are identified and remedies are suggests. And countermeasures of various attacks are also given. Most of the solutions are implemented in the Security Server. And ZigBee nodes have a few security handling capability.
최은석(Eunserk Choi),황광석(Kwangseok Hwang),이진욱(Jinuk Lee),정기현(Kihyun Chung),장창국(Changguk Jang) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5
As vehicle industry has been experiencing CO2 reduction and smart car systems, IT-oriented patent disputes are emerging in the vehicle technology. In this paper, technology fields where patent disputes occur and patent disputes litigation progress are described. Patent disputes for the autonomous vehicle and electric vehicle are also described.