• Title, Summary, Keyword: ZigBee

Search Result 508, Processing Time 0.035 seconds

Channel Characteristic and Link Quality Assessment of ZigBee Under Wi-Fi Interference (Wi-Fi 간섭 환경에서 ZigBee 소자의 채널 특성 및 링크 품질 평가)

  • Ahn, Seong-Beom;Kim, Hyeon-Ho;Choi, Sang-Jin;Rho, Do-Hwan;Pan, Jae-Kyung
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.13 no.11
    • /
    • pp.5479-5486
    • /
    • 2012
  • In this paper, we have measured PRR, RSSI and LQI of ZigBee channels under Wi-Fi environment and have assessed channel characteristic and link quality. To confirm any relationship among RSSI, LQI values and PRR under Wi-Fi interference in overlapping and non-overlapping channels of Wi-Fi and ZigBee, the experiments were performed without Wi-Fi, with Wi-Fi and file download through Wi-Fi. Under Wi-Fi interference, We perfomed experiments to ensure channel characteristics and link quality by fixing Wi-Fi and ZigBee receiver and varying the distance between ZigBee receiver and transmitter. ZigBee transmitter sends packet of 256 bits every second to ZigBee receiver. PRR was measured from ZigBee with variance of distance between fixed Wi-Fi and ZigBee. RSSI, LQI, PRR were measured from ZigBee with fixed Wi-Fi, fixed ZigBee receiver and variance of distance of ZigBee transmitter. As a result, we confirmed decrease of PRR under Wi-Fi interference but RSSI, LQI values similar regardless of overlapped or non-overlapped channel and Wi-Fi interference. Therefore, PRR should be used for interference detection in ZigBee communication under Wi-Fi environment but RSSI and LQI are not appreciate.

Secure Membership Protocol for ZigBee Network (ZigBee 네트워크에서의 안전한 멤버쉽 프로토콜)

  • Kim, Bong-Hwan;Park, Chang-Seop
    • Journal of the Korea Institute of Information Security & Cryptology
    • /
    • v.23 no.3
    • /
    • pp.405-416
    • /
    • 2013
  • ZigBee is a wireless sensor network protocol recognized as a next-generation standard infrastructure for WBAN and Smart Grid. Security plays an important role in several ZigBee applications. Especially, strict membership control should be enforced when the membership is changed during the join and leave operations in ZigBee. In this paper, we investigate the security weakness of the current leave operation in ZigBee and propose a new security scheme to address it as well as its security and performance analysis.

Serviceability Evaluation of ZigBee Technology for Construction Applications (설문조사를 통한 ZigBee 무선통신기술의 건설산업 사용성평가에 관한 연구)

  • Shin, Young Shik;Cao, Shang;Jang, Won-Suk
    • Journal of The Korean Society of Civil Engineers
    • /
    • v.32 no.3D
    • /
    • pp.247-258
    • /
    • 2012
  • This research evaluates the serviceability of ZigBee device that provides a potential technology to realizing the ubiquitous computing by improving the productivity and effectiveness in construction and data acquisition. Literature review was conducted in various application areas such as bridge monitoring, slope management, road management, highway traffic control. In addition characteristics and challenges in various wireless technologies are described to identify their adoptability to construction environment. Among them, ZigBee technology was selected to introduce the functionality on hardware, network, and security. Then, questionnaire survey was implemented by four different group, construction engineers, students, hardware developers, and researchers to explore the success and failure factors of ZigBee technology in construction area. The results proposes a guideline of the applicability of ZigBee technology in the area of serviceability, application area, considerations, and future direction. This paper would provide valuable information for future researches and technology development in designing the wireless sensor network applications.

Implementation of ZigBee Home Control System (ZigBee 스펙에 의한 가전 제어 구현)

  • Park, Woo-Chool;Kim, Young-Ho;Kim, Dae-Whan
    • Proceedings of the KIEE Conference
    • /
    • /
    • pp.228-230
    • /
    • 2004
  • ZigBee Alliance is a network designed for low-cost and very low-power short-range wireless communications. The ZigBee Alliance is a consortium formed by several leading semiconductor and industrial manufactures, and end users. One of the tasks of this organization is the definition of the networking support and applications profiles that will use IEEE Std 802.15.4-compliant transceivers. In the case of IEEE Std 802.15.4, the ZigBee Alliance is an organization that has led the development of the upper layers, through the definition of application profiles. We have implemented ZigBee home control system, however we have not fully implemented. Because of the ZigBee is not perfectly standarded. We will have to implement according to ZigBee Specifications.

  • PDF

ZigBee End-to-End Security For Ubiquitous Home Network (유비쿼터스 홈 네트워크에서의 ZigBee End-to-End 보안 기술)

  • Park, W.C.;Lee, M.S.;Yoon, M.H.;Kim, S.D.;Yang, S.H.
    • IEMEK Journal of Embedded Systems and Applications
    • /
    • v.2 no.2
    • /
    • pp.128-136
    • /
    • 2007
  • 무선 기술이 가지는 장점인 설치의 편리성, 기동성으로 인하여, ZigBee를 이용한 홈 네트워크 서비스 활용성에 대한 기술개발이 활발히 진행되고 있다. 이러한 유비쿼터스 홈 서비스의 활용성에도 불구하고 ZigBee 기반 홈 기기나 센서 정보의 도청, 비정상적인 패킷의 유통, 메시지 재사용등의 데이터 위/변조 문제와 네트워크 전체를 마비시킬 수 있는 서비스 거부 공격등에 쉽게 노출되어 있다. 본 논문에서는 이에 대한 효과적인 대응과 관리 처리를 위하여, 유비쿼터스 홈 네트워크에서의 ZigBee 기술을 사용할 시에 발생할 수 있는 보안 문제점을 해결하기 위한 ZigBee 기반 End-to-End 보안 기술을 개발하였다. 본 기술 개발의 특징은 ZigBee Device, 코디네이터/게이트웨이 영역은 ZigBee 표준 스펙을 구현하였으며, 응용어플리케이션/서버 영역은 표준 스펙이 정의 되어 있지 않으나, 이 부분을 유비쿼터스 홈 네트워크 서비스 관점에서 설계 및 구현하였다. ZigBee 디바이스가 가지는 하드웨어 자원의 빈약성을 고려하여 최대한 보안 기능을 리소스가 풍부한 응용어플리케이션/서버의 자원 활용에 촛점을 맞췄다.

  • PDF

Fault-tolerant ZigBee-based Automatic Meter Reading Infrastructure

  • Hwang, Kwang-Il
    • Journal of Information Processing Systems
    • /
    • v.5 no.4
    • /
    • pp.221-228
    • /
    • 2009
  • Due to low cost, low-power, and scalability, ZigBee is considered an efficient wireless AMR infrastructure. However, these characteristics of ZigBee can make the devices more vulnerable to unexpected error environments. In this paper, a fault-tolerant wireless AMR network (FWAMR) is proposed, which is designed to improve the robustness of the conventional ZigBee-based AMR systems by coping well with dynamic error environments. The experimental results demonstrate that the FWAMR is considerably fault-tolerant compared with the conventional ZigBee-based AMR network.

A Survey on Key Management of ZigBee Network (ZigBee 네트워크 키 관리 기법 조사)

  • Chung, Sung-Min;Lee, Jung-June;Jung, Young-Gyo;Youn, Hee-Yong
    • Proceedings of the Korean Society of Computer Information Conference
    • /
    • /
    • pp.69-70
    • /
    • 2016
  • ZigBee는 전력소모가 적고 근거리통신방식을 사용하며 저비용인 장점을 가지는 개인 영역 네트워크 (PAN)이다. ZigBee가 산업과 헬스케어 등의 여러 애플리케이션에서 많이 사용되면서, 최근 ZigBee에서의 보안이 중요한 문제로 다루어졌다. 본 논문에서는 ZigBee 네트워크에서의 키 관리 기법을 조사하고 보안능력 및 성능을 분석한다.

  • PDF

Design and Implementation of a Dual-Channel ZigBee Router (이중 채널 ZigBee 라우터의 설계 및 구현)

  • Kim, Brian
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.11 no.2
    • /
    • pp.416-421
    • /
    • 2007
  • ZigBee is becoming a promising communication protocol for wireless sensor networks based on low-power consumption. In case of a ZigBee network requesting continuous transmission of sensed data, the required bandwidth can be overwhelm the maximum transmission rate of 150Kbps. However, the ZigBee router which delivers data from source node to destination node can transmit data at most in a half of maximum rate because the router can not send and receive the data simultaneously. In this paper, we propose and implement a dual-channel router which can send and receive data simultaneously. Also, we propose a centralized channel allocation algorithm to allocate different channels to each module. The experiment result by the proposed dual-channel router shows a maximum throughput of 150Kbps as large as twice of normal single-channel router.

A Study of Structure Monitoring Applicability of ZigBee Module through Oil Sand Plant Temperature around Canada (캐나다 오일샌드 플랜트 온도 조건을 고려한 구조물 모니터링 통신 모듈 적용성에 관한 연구)

  • Yang, Heekwon;Lee, Chankil;Lee, Bang Yong;Park, Keunbo
    • The KSFM Journal of Fluid Machinery
    • /
    • v.19 no.3
    • /
    • pp.37-42
    • /
    • 2016
  • The demand for wireless technology in plant structure has recently been increasing due to several advantages such as installation cost reduction, easy placement, easy extension and aesthetic benefits. Among the many wireless technologies, ZigBee is one of the most useful for plant structure; a wireless plant networking system can be configured using ZigBee alone. This research proposes a ZigBee to use for extreme cold region and thereby enable integration of wired and wireless plant monitoring systems. In this study, in order to assess the performance of ZigBee measured data by thermocouple were examined based on the results from laboratory tests between existing ZigBee and developed ZigBee. From the experiment results, performance of developed ZigBee in harsh environment can be increased well.

Ubiquitous u-Health System using RFID & ZigBee (RFID와 ZigBee를 이용한 유비쿼터스 u-Health 시스템 구현)

  • Kim Jin-Tai;Kwon Youngmi
    • Journal of the Institute of Electronics Engineers of Korea TC
    • /
    • v.43 no.1
    • /
    • pp.79-88
    • /
    • 2006
  • In this paper, we designed and implemented ubiquitous u-Health system using RFE and ZigBee. We made a wireless protocol Kit which combines RFE Tag recognition and ZigBee data communication capability. The software is designed and developed on the TinyOS. Wireless communication technologies which hold multi-protocol stacks with RFID and result in the wireless ubiquitous world could be Bluetooth, ZigBee, 802.11x WLAN and so on. The environments that the suggested u-Health system may be used is un-manned nursing, which would be utilized in dense sensor networks such as a hospital. The the size of devices with RFID and ZigBee will be so smaller and smaller as a bracelet, a wrist watch and a ring. The combined wireless RFID-ZigBee system could be applied to applications which requires some actions corresponding to the collected (or sensed) information in WBAN(Wireless Body Area Network) and/or WPAN(Wireless Person Area Network). The proposed ubiquitous u-Health system displays some text-type alert message on LCD which is attached to the system or gives voice alert message to the adequate node users. RFE will be used as various combinations with other wireless technologies for some application-specific purposes.