Accuracy improvement in sensor localization system utilizing heterogeneous wireless technologies

Takahiro Yamamoto, Shigemi Ishida, Kousaku Izumi, Shigeaki Tagashira, Akira Fukuda

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 引用 (Scopus)

抜粋

Sensor localization is one of the big problems when building large scale indoor sensor networks because GPS (Global Positioning System) is unavailable in indoor environments. We are developing ZigLoc, a sensor localization system using WiFi APs (access points) as references, which requires no additional infrastructure [1,2]. In ZigLoc, a sensor node measures RSS (received signal strength) of WiFi AP signals using a ZigBee (IEEE 802.15.4) module. Location of a sensor node is then estimated using fingerprints collected for a WiFi localization system. However, ZigLoc exhibits low accuracy due to the RSS offset derived by ZigBee and WiFi modules. The RSS offset is mainly caused by the channel bandwidth difference. In this paper, we present a differential fingerprinting method to improve localization accuracy. Our key idea is that we focus on RSS difference between WiFi APs. RSS difference between APs should be the same when we measure RSS using either ZigBee or WiFi modules. Differential fingerprinting only relies on RSS difference in fingerprint similarity calculation. We conducted experimental evaluations in a practical environment. The experimental evaluations reveal that ZigLoc accuracy was improved by approximately 26 % using the differential fingerprinting method.

元の言語英語
ホスト出版物のタイトル2017 10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017
出版者Institute of Electrical and Electronics Engineers Inc.
ページ1-6
ページ数6
ISBN(電子版)9784907626310
DOI
出版物ステータス出版済み - 4 2 2018
イベント10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017 - Toyama, 日本
継続期間: 10 3 201710 5 2017

出版物シリーズ

名前2017 10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017
2018-January

その他

その他10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017
日本
Toyama
期間10/3/1710/5/17

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Safety, Risk, Reliability and Quality

フィンガープリント Accuracy improvement in sensor localization system utilizing heterogeneous wireless technologies' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Yamamoto, T., Ishida, S., Izumi, K., Tagashira, S., & Fukuda, A. (2018). Accuracy improvement in sensor localization system utilizing heterogeneous wireless technologies. : 2017 10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017 (pp. 1-6). (2017 10th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2017; 巻数 2018-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/ICMU.2017.8330074