ETRI-Knowledge Sharing Plaform

ENGLISH

성과물

논문 검색
구분 SCI
연도 ~ 키워드

상세정보

학술지 A Time Synchronization Technique for CoAP-based Home Automation Systems
Cited 38 time in scopus Download 4 time Share share facebook twitter linkedin kakaostory
저자
손승철, 김낙우, 이병탁, 조재호, 정조운
발행일
201602
출처
IEEE Transactions on Consumer Electronics, v.62 no.1, pp.10-16
ISSN
0098-3063
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TCE.2016.7448557
협약과제
15ZC2300, 지역광부품 고도화를 위한 광융합 기술개발, 이병탁
초록
With the advent of internet-of-things (IoT)-based home automation systems, time synchronization techniques for low power sensor modules are in high demand. The constrained application protocol (CoAP) was recently standardized for sensor networks by IETF and is becoming widely adopted for home automation systems by ETSI, OMA, and oneM2M. The network time protocol (NTP) is not applicable to home automation systems due to its limited computing resources. This paper proposes a lightweight time synchronization algorithm for CoAP-based home automation system networks. The CoAP option field and a shim header are used to include time-stamps in the home automation system. The proposed scheme can thus be applied to both IP-based and non-IP-based home automation systems. In experiments with several household devices having non-IP communication interfaces, experimental results show that the proposed technique gives an average error of 1 ms and a network overhead reduction of 17% when compared to the ideal NTP service.
키워드
CoAP, Home automation, Smart home, Time synchronization
KSP 제안 키워드
Average error, Communication interface, Computing resources, Constrained Application Protocol, Home automation system, IP-Based, Internet of thing(IoT), Network overhead, Network time protocol(NTP), Sensor module, Sensor networks