中国科学院软件研究所机构知识库
Advanced  
ISCAS OpenIR  > 信息安全国家重点实验室  > 会议论文
题名:
exploiting fm radio data system for adaptive clock calibration in sensor networks
作者: Li Liqun ; Xing Guoliang ; Sun Limin ; Huangfu Wei ; Zhou Ruogu ; Zhu Hongsong
会议文集: MobiSys'11 - Compilation Proceedings of the 9th International Conference on Mobile Systems, Applications and Services and Co-located Workshops
会议名称: 9th International Conference on Mobile Systems, Applications, and Services, MobiSys'11 and Co-located Workshops
会议日期: 28-Jun-02
出版日期: 2011
会议地点: Bethesda, MD, United states
关键词: Data processing ; Frequency modulation ; Mechanical clocks ; Message passing ; Radio broadcasting ; Radio receivers ; Radio stations ; Sensor nodes ; Sensors ; Synchronization ; Wireless networks
出版地: United States
收录类别: EI
ISBN: 9781450306430
部门归属: (1) Institute of Software, Chinese Academy of Sciences, China; (2) Graduate University, Chinese Academy of Sciences, China; (3) Department of Computer Science and Engineering, Michigan State University, United States
主办者: ACM SIGMOBILE; USENIX Association
英文摘要: Clock synchronization is critical for Wireless Sensor Networks (WSNs) due to the need of inter-node coordination and collaborative information processing. Although many message passing protocols can achieve satisfactory clock synchronization accuracy, they incur prohibitively high overhead when the network scales to more than tens of nodes. An alternative approach is to take advantage of the global time reference induced by existing infrastructures including GPS, timekeeping radio stations, or power grid. However, high power consumption and geographic constraints present them from being widely adopted in WSNs. In this paper, we propose ROCS, a new clock synchronization approach exploiting the Radio Data System (RDS) of FM radios. First, we design a new hardware FM receiver that can extract a periodic pulse from FM broadcasts, referred to as RDS clock. We then conduct a large-scale measurement study of RDS clock in our lab for a period of six days and on a vehicle driving through a metropolitan area of over 40 km2. Our results show that RDS clock is highly stable and hence is a viable means to calibrate the clocks of large-scale city-wide sensor networks. To reduce the high power consumption of FM receiver, ROCS intelligently predicts the time error due to drift, and adaptively calibrates the native clock via the RDS clock. We implement ROCS in TinyOS on our hardware FM receiver and a TelosB-compatible WSN platform. Our extensive experiments using a 12-node testbed and our driving measurement traces show that ROCS achieves accurate and precise clock synchronization with low power consumption. © 2011 ACM.
内容类型: 会议论文
URI标识: http://ir.iscas.ac.cn/handle/311060/14309
Appears in Collections:信息安全国家重点实验室_会议论文

Files in This Item:
File Name/ File Size Content Type Version Access License
exploiting fm radio data system for adaptive clock calibration in sensor networks.pdf(710KB)----限制开放-- 联系获取全文

Recommended Citation:
Li Liqun,Xing Guoliang,Sun Limin,et al. exploiting fm radio data system for adaptive clock calibration in sensor networks[C]. 见:9th International Conference on Mobile Systems, Applications, and Services, MobiSys'11 and Co-located Workshops. Bethesda, MD, United states. 28-Jun-02.
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Li Liqun]'s Articles
[Xing Guoliang]'s Articles
[Sun Limin]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Li Liqun]‘s Articles
[Xing Guoliang]‘s Articles
[Sun Limin]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院软件研究所 - Feedback
Powered by CSpace