| Presentation | 2016-01-28 Indoor Location Estimation using Radio Fingerprints with Relative Offsets of Measurement Points Yuta Azuma, Takeshi Umezawa, Noritaka Osawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an indoor location estimation method using radio signal strength at multipoints as fingerprints. The proposed method measures radio signals from multiple beacons at nearby points and treats a combination of the signals as a fingerprint. The method also measures relative offsets between the nearby points by dead reckoning in a short period. The combined fingerprints have more features, or information, than a fingerprint at one location and thus enables the system to increase accuracy of location estimation. Moreover a short-term dead reckoning can avoid cumulative errors in relative offset estimation. This paper evaluates the proposed method by simulation using data measured with Bluetooth beacons in an indoor environment. The location estimation errors decreased from 1.5m to 1.4m by the proposed method with pattern matching using degree of similarity (PM), from 1.1m to 0.6m with Support Vector Machine (SVM), and 1.3m to 0.9m with Random Forest (RF). The rates of correct answers increased from 8.3% to 32.8% (PM), from 52.2% to 84.6% (SVM), and from 21.6% to 66.0% (RF) where an answer is correct if its error is less than 0.5m. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bluetooth Low Energy / Indoor localization / Portable terminals / Pedestrian navigation / Beacon / Life log |
| Paper # | MoNA2015-37 |
| Date of Issue | 2016-01-21 (MoNA) |
| Conference Information | |
| Committee | MICT / ASN / MoNA |
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| Conference Date | 2016/1/28(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hotel Okada |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ambient intelligence, ICT for Medical, Healthcare and Sports, etc |
| Chair | Ryuji Kohno(Yokohama National Univ.) / Hiroshi Tohjo(NTT) / Hiroaki Morino(Shibaura Inst. of Tech.) |
| Vice Chair | Masaru Sugimachi(National Cerebral and Cardiovascular Center) / Takahiro Aoyagi(Tokyo Inst. of Tech.) / Hiroo Sekiya(Chiba Univ.) / Hiraku Okada(Nagoya Univ.) / Kiyohito Yoshihara(KDDI R&D Labs.) / Ryoichi Shinkuma(Kyoto Univ.) |
| Secretary | Masaru Sugimachi(NICT) / Takahiro Aoyagi(Nagoya Inst. of Tech.) / Hiroo Sekiya(Kanagawa Inst. of Tech.) / Hiraku Okada(NTT) / Kiyohito Yoshihara(KDDI R&D Labs.) / Ryoichi Shinkuma(Kumamoto Univ.) |
| Assistant | Kohei Ohno(Meiji Univ.) / Keisuke Shima(Yokohama National Univ.) / Tomoko Tateyama(Ritsumeikan Univ.) / Yuichi Igarashi(Hitachi) / Katsuhiro Naito(Aichi Inst. of Tech.) / Kiyohiko Hattori(NICT) / Hiroshi Fujita(Fujitsu Labs.) / Takuro Yonezawa(Keio Univ.) / Yoshifumi Morihiro(NTT DoCoMo) / Hisashi Kurasawa(NTT) / Makoto Suzuki(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Healthcare and Medical Information Communication Technology / Technical Committee on Ambient intelligence and Sensor Networks / Technical Committee on Mobile Network and Applications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Indoor Location Estimation using Radio Fingerprints with Relative Offsets of Measurement Points |
| Sub Title (in English) | |
| Keyword(1) | Bluetooth Low Energy |
| Keyword(2) | Indoor localization |
| Keyword(3) | Portable terminals |
| Keyword(4) | Pedestrian navigation |
| Keyword(5) | Beacon |
| Keyword(6) | Life log |
| 1st Author's Name | Yuta Azuma |
| 1st Author's Affiliation | Chiba University(Chiba Univ.) |
| 2nd Author's Name | Takeshi Umezawa |
| 2nd Author's Affiliation | Chiba University(Chiba Univ.) |
| 3rd Author's Name | Noritaka Osawa |
| 3rd Author's Affiliation | Chiba University(Chiba Univ.) |
| Date | 2016-01-28 |
| Paper # | MoNA2015-37 |
| Volume (vol) | vol.115 |
| Number (no) | MoNA-436 |
| Page | pp.pp.1-6(MoNA), |
| #Pages | 6 |
| Date of Issue | 2016-01-21 (MoNA) |