| Presentation | 2023-01-26 Estimation of wi-fi signal condition in indoor environment for digital twin construction Daiki Kodama, Hiromu Honda, Techasarntikul Nattaon, Tomoki Yosihisa, Hideyuki Shimonishi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In cyber-physical systems (CPS) where humans and robots coexist, the safety and reliability of wireless communication are important. Moreover, when predicting the accuracy of network quality, the confidence of the prediction result is also necessary. Existing research on RSS map estimation requires knowledge of the exact position and transmission power of the access point, or measuring of signal strength at multiple locations is required. However, the prediction result may not accurate for positions that were not measured. In this paper, a method for constructing digital twin that representing the spatial distribution of wireless network quality is proposed. We constructed a graph structure of each point in the area as a node, and use a Markov random field to make probabilistic inferences of the Received Signal Strength (RSS) of all nodes from a partially observed node. The proposed method was evaluated with the manual measurements of indoor signal strength. Although the number of observation points is low, the prediction accuracy is maintained and the probabilistic distribution is archived. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cyber-Physical System / Digital Twin / Receive Signal Strength / Markov Random Field |
| Paper # | NS2022-152 |
| Date of Issue | 2023-01-19 (NS) |
| Conference Information | |
| Committee | NS |
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| Conference Date | 2023/1/26(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hybrid Meeting (Yamaguchi Prefecture) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Network software (Software architecture, Middleware), Network application, SOA/SDP, NGN/IMS/API, Distributed control/Dynamic routing, Grid, NFV, IoT, Network/System reliability, Network/System evaluation, etc. |
| Chair | Tetsuya Oishi(NTT) |
| Vice Chair | Takumi Miyoshi(Shibaura Insti of Tech.) |
| Secretary | Takumi Miyoshi(NTT) |
| Assistant | Kotaro Mihara(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Network Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of wi-fi signal condition in indoor environment for digital twin construction |
| Sub Title (in English) | |
| Keyword(1) | Cyber-Physical System |
| Keyword(2) | Digital Twin |
| Keyword(3) | Receive Signal Strength |
| Keyword(4) | Markov Random Field |
| 1st Author's Name | Daiki Kodama |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Hiromu Honda |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| 3rd Author's Name | Techasarntikul Nattaon |
| 3rd Author's Affiliation | Osaka University(Osaka Univ.) |
| 4th Author's Name | Tomoki Yosihisa |
| 4th Author's Affiliation | Osaka University(Osaka Univ.) |
| 5th Author's Name | Hideyuki Shimonishi |
| 5th Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2023-01-26 |
| Paper # | NS2022-152 |
| Volume (vol) | vol.122 |
| Number (no) | NS-362 |
| Page | pp.pp.13-18(NS), |
| #Pages | 6 |
| Date of Issue | 2023-01-19 (NS) |