International Conference · 2024

Demonstrating OmniCells: A Resilient Indoor Localization System to Devices' Diversity

Hamada Rizk , Tatsuya Amano , Hirozumi Yamaguchi , Moustafa Youssef

Proceedings of the 28th Annual International Conference on Mobile Computing And Networking (MobiCom '22) POSTER/DEMO, pp.781 - 782

DOI: 10.1145/3495243.3558753

Abstract

In this paper, we demonstrate OmniCells: a cellular-based indoor localization system designed to combat the device heterogeneity problem. OmniCells is a deep learning-based system that leverages cellular measurements from one or more training devices to provide consistent performance across unseen tracking phones. In this demo, we show the effect of device heterogeneity on the received cellular signals and how this leads to performance deterioration of traditional localization systems. In particular, we show how OmniCells and its novel feature extraction methods enable learning a rich and device-invariant representation without making any assumptions about the source or target devices. The system also includes other modules to increase the deep model's generalization and resilience to unseen scenarios.

Research Note

携帯電話の基地局から届く電波を使う屋内測位は、Wi-Fi のように屋内へのアクセスポイントの設置を前提としないため広い範囲で使えますが、端末の機種が変わると測定される電波の値そのものが変わってしまうという問題を抱えています。学習に使った端末と実際に測位する端末が違うと、それだけで精度が落ちるということです。

このデモで示す OmniCells は、この端末の多様性の問題に正面から取り組んだ深層学習ベースの測位システムです。一つ以上の端末で取得したセルラーの測定値から学習し、学習時に使っていない端末でも同等の性能が出るようにします。

鍵になっているのは特徴抽出の方法で、端末の種類に依存しない表現を、学習元と対象の端末について何も仮定を置かずに獲得できるように設計されています。加えて、未知の状況に対する深層モデルの汎化と頑健性を高めるための機構も組み込んでいます。

デモでは、端末が変わることで受信されるセルラー信号がどう変化し、それが従来の測位システムの性能をどう劣化させるかをまず示したうえで、OmniCells がその影響を受けずに動く様子を見せています。

Environment-Aware Distributed Scheduling for Emergency LoRa Networks

Yuto Inaba, Tatsuya Amano, Akihito Hiromori, Hirozumi Yamaguchi

2026 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), SPT-IoT 2026, pp. 1366–1371

DOI 10.1109/PerComWorkshops68308.2026.11585469

Disaster CommunicationLoRa +4

A Lightweight Vision-Language Model for Disaster Image Summarization

Hibiki Yoshizaki, Akira Uchiyama, Akihito Hiromori, Mineo Takai, Hirozumi Yamaguchi

2026 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), PerconAI 2026, pp. 1203–1208

DOI 10.1109/PerComWorkshops68308.2026.11585419

Semantic CommunicationDisaster Response +4

Physics-Integrated Deep Learning for Urban Landslide Prediction

Ren Ozeki, Hamada Rizk, Hirozumi Yamaguchi

2026 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), URBSENSE 2026, pp. 1094–1099

DOI 10.1109/PerComWorkshops68308.2026.11585337

Landslide PredictionPhysics-Integrated Learning +3

A Simulation Framework for Precision Formation Flying of Massive Satellite Swarms

Tatsuya Amano, Akihito Hiromori, Hirozumi Yamaguchi, Sumio Morioka

2026 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), PerVehicle , pp. 230–235

DOI 10.1109/PerComWorkshops68308.2026.11585321

Satellite Formation FlyingDistributed Simulation +4

Ray-Tracing-Driven Pattern-Based Vehicle Recognition in ISAC Radar

Heetae Jin, Akira Uchiyama

2026 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops), PerRad 2026, pp. 328–333

DOI 10.1109/PerComWorkshops68308.2026.11585327

ISACBeyond 5G +4

A Questionnaire-Only Counterfactual Machine Learning Approach to Assess the Spatial Impact of Green Mobility Vehicles in Urban Parks

Rami Naeem, Srikant Manas, Tatsuya Amano, Hirozumi Yamaguchi

ICDCN 2026 Workshop: IWNDSC2026

DOI 10.1145/3737611.3776620