Euisin Lee

Chungbuk National University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Sang‐Ha Kim

Yongin Mental Hospital

116

Soochang Park

Chungbuk National University

Fucai Yu

University of Electronic Science and Technology of China

Youngju Nam

Chungbuk National University

Hyunseok Choi

Chungbuk National University

Younghwan Choi

Namseoul University

Seungmin Oh

Kongju National University

Yongje Shin

Chungbuk National University

Min-Sook Jin

Chungnam National University

Donghun Lee

Kongju National University

Cooperative Institutions

Chungnam National University

Sungkyunkwan University

Chungbuk National University

Samsung Medical Center

Seoul National University

Samsung (South Korea)

University of California, Los Angeles

Electronics and Telecommunications Research Institute

Chungnam National University Hospital

Korea Advanced Institute of Science and Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Poster Abstract: Enhanced Real-Time Transmission Using Time Gain in Wireless Sensor Networks

Taehun Yang Cheonyong Kim Sangdae Kim Euisin Lee Sang‐Ha Kim

Real-time applications in wireless sensor networks require that packets should reach to a sink within the time deadline. To satisfy the requirements, existing studies exploit nodes whose speed is higher than the desired delivery speed decided by the spatiotemporal approach. However, they fail real-time transmission in the area where there is no neighbor nodes which meet the requirements toward a sink since the desired delivery speed is fixed. This paper proposes a scheme to pass the area using time gain which occurs by the nature of the existing real-time transmission scheme. Thus, in the area, a sending node could make full use of nodes which do not satisfy the requirements. In the end, the packet passes across the area with a lower speed than the desired delivery speed. The simulation results show that the proposed scheme is superior in terms of real-time transmission success ratio to the existing schemes.

Sink (geography)

10.1109/ipsn.2016.7460702

Cite

Citations (1)

Hole modeling and detour scheme for geographic routing in wireless sensor networks

Journal of Communications and Networks (2009)

Fucai Yu Soochang Park Euisin Lee Sang‐Ha Kim

Geographic routing has been considered as an attractive approach in wireless sensor networks, since it routes data packets by using location information rather than global topology information. In geographic routing schemes, packets are usually sent along the boundary of a hole by face routing to detour the hole. As result, all data flows which need to detour the hole are concentrated on the boundary of the hole. This hole detour scheme results in much more energy consumption for nodes at the hole boundary, and the energy exhaustion of hole boundary nodes enlarges the holes. This is referred to as a hole diffusion problem. The perimeter mode may also lead to data collisions on the hole boundary nodes if multiple data flows need to bypass a hole simultaneously. In this paper, we propose a hole modeling and detour scheme for geographic routing in wireless sensor networks. Our hole modeling and detour scheme can efficiently prevent hole diffusion, avoid the local minimum problem faced by geographic routing protocols, and reduce data collisions on the hole boundary nodes. Simulation results show that the proposed scheme is superior to the other protocols in terms of control overhead, average delivery delay and energy consumption.

Geographic routing

10.1109/jcn.2009.6391346

Cite

Citations (6)

Input System Implementation for Virtual Reality Headset Using Electro-oculogram(EOG)

The Journal of the Korea Contents Association (2016)

Youngju Nam Ki‐Chul Kwon Byeongjun Kim Euisin Lee Nam Kim

가상현실 헤드셋에 대한 제어는 머리에 착용한 상태에서 손을 사용하기 때문에 조작에 대한 부담감이 발생한다. 본 논문에서는 손을 사용하지 않고 즉각적인 입력신호를 줄 수 있는 안전도(EOG, electro-oculogram)를 이용한 가상현실 헤드셋 입력시스템을 제안하였다. 이는 가상현실 헤드셋의 제어를 위한 입력 신호를 손의 움직임 없이 사용자의 안전도만으로 디스플레이 되는 콘텐츠를 제어할 수 있는 시스템이다. 제안된 시스템은 모바일 폰, 가상현실 헤드셋, 그리고 뇌전도 데이터 획득용 헤드셋으로 구성되어 있으며, 신호처리 및 제어를 위한 Unity3D 엔진을 이용하여 제어 시스템을 구현하였으며, 구현된 시스템을 통해 가상현실 헤드셋의 손쉬운 제어가 가능함을 확인하였다. The most of virtual reality headset have the separated controllers while they put on the headset; so the users may feel the discomfort and burden for the operation. In this paper, a novel virtual reality headset system using the EOG (electro-oculogram) is proposed and it has a distinguished feature that the user does not need to control the virtual reality headset by the hands, but the displayed contents are controllable by the electrical activity of the user's brain. The proposed system consist of the mobile device, a virtual reality headset, and an EOG headset for data acquisition. The system is implemented by using the Unity3D engine for the signal processing and controller, and the concept is confirmed through the implementation that it is more interesting and easier to control the virtual reality headset.

Headset

10.5392/jkca.2016.16.09.739

Cite

Citations (0)

Cost-Efficient and Reliable Communication Scheme for Supporting a Mobile Device in WirelessHART of IIoT

IEEE Access (2022)

Hyunchong Cho Seungmin Oh Sang‐Ha Kim Sangdae Kim Euisin Lee

In IIoT, WirelessHART is one of the reliable wireless network standards since it can improve the productivity and efficiency. Recently, in Industrial area, the enterprise and the researcher have been paid attention to a mobile device, which will become one of the key points in the industry due to its potential ability. However, since WirelessHART existing researches handle with a mobile device as a single point-to-point viewpoint, they will happen a disconnection and a wasteful communication resource problem when they use a mobile device. In order to solve this limitation, we propose a proactive and cost-effective scheme for the mobility by focusing on a mobility as a group viewpoint. By using onion-peeling method, the proposed scheme can select some fixed devices to communicate with a mobile device and prevent redundant communication provision for a mobile device. The simulation results show that the proposed scheme is more cost-efficient and reliable when it compares with the existing researches of WirelessHART.

Mobility management

10.1109/access.2022.3183761

Cite

Citations (0)

Elastic routing: a novel geographic routing for mobile sinks in wireless sensor networks

IET Communications (2010)

F. Richard Yu S. Park Euisin Lee Sang‐Ha Kim

Geographic routing has been considered as an efficient, simple and scalable routing protocol for wireless sensor networks, since it exploits pure location information instead of global topology information to route data packets towards a static sink. Recently, a number of research works have shown that mobile sinks can achieve high energy efficiency and load balance than static ones. In order to receive data packets continuously, a mobile sink must update its location to the source frequently. However, frequent location updates of mobile sinks may lead to both rapid energy consumption of the sensor nodes and increased collisions in wireless transmissions. The authors propose a novel geographic routing for mobile sinks to address this issue. The proposed scheme takes advantage of wireless broadcast transmission nature of wireless sensor nodes. When a sink moves, the new location information is propagated along the reverse geographic routing path to the source during data delivery. Analysis and simulation results indicate that elastic routing is superior to other protocols in terms of control overhead, data delivery delay and energy consumption.

Geographic routing

Zone Routing Protocol

10.1049/iet-com.2009.0197

Cite

Citations (66)

Energy-efficient predictive tracking for continuous objects in wireless sensor networks

Seungwoo Hong Sungkee Noh Euisin Lee Soochang Park Sang‐Ha Kim

Due to the severe resource constraints of sensor hardware, energy efficiency is one of critical factors for monitoring the movement of the large-scale phenomena such as wild fire and hazardous bio-chemical material, denoted by continuous objects. In order to save energy, most of existing research on tracking the continuous objects focuses on finding the ways to minimize the communication cost through the effective data delivery such as data aggregation and reducing the number of reporting nodes, and not much work has been done on sensor state scheduling. Energy efficiency is expected to improve if only sensor nodes near the boundary of continuous object actively participate in tracking process, while other sensor nodes stay on sleep state for energy saving. In this paper, we propose a predictive continuous object tracking scheme, called PRECO, which uses minimum set of active sensing nodes to reduce energy consumption. The proposed scheme predicts the future boundary line, which provides the knowledge for a wake-up mechanism to decide which sleeping nodes need to be activated for future tracking. The proposed algorithm is verified with simulation results that total energy consumption can be dramatically reduced under acceptable boundary detection accuracy.

Tracking (education)

10.1109/pimrc.2010.5671915

Cite

Citations (22)

Multipath Routing based on Energy and Link Quality Information for Supporting Mobile Sinks in Wireless Sensor Networks

Proceedings of the Korea Information Processing Society Conference (2016)

Yongje Shin Jae Young Jang Min Yoon Euisin Lee

Multipath routing

10.3745/pkips.y2016m10a.108

Cite

Citations (0)

Logical Space Composition of IoT for a Scalable and Adaptable Smart Environment

2022 International Conference on Information Networking (ICOIN) (2024)

Hyeyoung An Woojin Park Soochang Park Euisin Lee

10.1109/icoin59985.2024.10572086

Cite

Citations (0)

Optimized Transmission Scheme for Communication Reliability in Wireless Sensor Networks

Sungkee Noh Euisin Lee Seungmin Oh Jeongcheol Lee Sang‐Ha Kim

Data packets in multi-hop wireless sensor networks require a variety of Communication Reliability (CR) according to applications. Recently, a scheme for supporting a desired CR, called AC, has proposed. In order to support the desired CR, AC simply maintains 100% of data packets of a source at intermediate nodes on a routing path which do not satisfy the desired CR. However, since AC does not consider the link quality of each intermediate node on the routing path, it highly increases the number of total packets which are transmitted on the routing path for achieving the desired CR. To solve the high number of totally transmitted packets in AC, we propose an effective transmission scheme, MTTP, which can reduce the number of totally transmitted packets for achieving the desired CR. By geometric programming, MTTP allocates an optimized one-hop packet transmission rate of each wireless link by considering the quality of wireless links on the routing path. However, AC and MTTP consider only one next-hop node on the routing path even though one node has many one-hop neighbors in practice. Accordingly, we propose another scheme, MTTP_Prime, which consider many one-hop neighbors. By dynamic programming, MTTP_Prime selects a routing path with optimized one-hop packet transmission rates in terms of the number of totally transmitted packets. Simulation results verify that MTTP is superior to AC, and MTTP_Prime is superior to MTTP.

Equal-cost multi-path routing

Packet forwarding

10.1109/glocom.2010.5684044

Cite

Citations (2)

Selection Scheme of Energy-Efficient Data Aggregation Node in Wireless Sensor Networks

International Conference on Pervasive and Embedded Computing and Communication Systems (2010)

Euisin Lee Soochang Park Seungmin Oh Yongbin Yim Sang‐Ha Kim

Data aggregator

Sensor node

Source

Cite

Citations (0)