2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU)最新文献_第2页

Maneuver Classification in Wheelchair Basketball Using Inertial Sensors 基于惯性传感器的轮椅篮球动作分类

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006654

R. Hasegawa, A. Uchiyama, T. Higashino

{"title":"Maneuver Classification in Wheelchair Basketball Using Inertial Sensors","authors":"R. Hasegawa, A. Uchiyama, T. Higashino","doi":"10.23919/ICMU48249.2019.9006654","DOIUrl":"https://doi.org/10.23919/ICMU48249.2019.9006654","url":null,"abstract":"In wheelchair basketball (WB), players are making efforts to improve the technique of wheelchair maneuver since it is the most basic and important action in every situation. However, the assessment of maneuver quality is difficult due to the lack of quantitative metrics. In this paper, in order to support the technical improvement of athletes in WB, we propose a maneuver classification method using inertial sensors. For this purpose, inertial sensors are fixed to the left and right axles of the wheelchair and the occurrence of maneuvers is detected using the angular velocity. Major maneuver activities in WB are classified into 2 types: PUSH and STOP. First, our method segments candidates of maneuver periods by the local maximum/minimum of the angular velocity since the rotation of the wheel generated by maneuvering leads to sharp changes of the angular velocity. Then, based on thresholds, we classify maneuver actions. For evaluation, we collected real data from 6 players. From the result, we confirmed our method achieves the average recall and precision of 88.0% and 87.6%, respectively. Furthermore, we confirmed the effectiveness of the classification results for the assessment of maneuver quality.","PeriodicalId":348402,"journal":{"name":"2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125236038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Building a Reliable and Cost-Effective RTK-GNSS Infrastructure for Precise Positioning of IoT Applications 构建可靠、经济的RTK-GNSS基础设施，实现物联网应用的精确定位

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006632

Bhagawan Rokaha, B. P. Gautam, T. Kitani

{"title":"Building a Reliable and Cost-Effective RTK-GNSS Infrastructure for Precise Positioning of IoT Applications","authors":"Bhagawan Rokaha, B. P. Gautam, T. Kitani","doi":"10.23919/ICMU48249.2019.9006632","DOIUrl":"https://doi.org/10.23919/ICMU48249.2019.9006632","url":null,"abstract":"A precise positioning solution is mandatory for many applications including intelligent transport systems (ITS), precision agriculture, space weather forecasting, disaster rescue and managing unmanned aerial vehicles (UAV). RTK-GNSS is a key technology in providing centimeter-level accuracy for those applications. However, reliable and cost-effective RTK-GNSS applications and infrastructure are still lacking. Thus, in this paper, we discuss how a reliable and cost-saving RTK-GNSS infrastructure can be designed, deployed and accomplished by using available technologies and tools. We developed a prototyping device equipped with RTK-GNSS receiver, cellular modem, sensors, and movable energy supply modules that include a solar panel as a self-sustainable power source. In our design, different sensors are used to monitor and control the physical status of the base station through Internet. We conducted two experiments in different weather and geographical conditions where our result shows that the consistency of the cm-level accuracy is around 91% in both areas. Similarly, the reliability of the system is maintained by the sensors' data that are visualized graphically in real-time through Internet. After analyzing the experimented results, and mechanism of the base station status update and control system, we conclude that the accuracy, feasibility, and reliability can be achieved even by using a low-cost RTK-GNSS receiver with sensors network. We believe that developing this infrastructure will support precise positioning applications and upgrade technological capabilities for generations.","PeriodicalId":348402,"journal":{"name":"2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130297434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Preliminary Investigation of Visualizing Human Activity Recognition Neural Network 可视化人体活动识别神经网络的初步研究

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006643

Naoya Yoshimura, T. Maekawa, Takahiro Hara

引用次数: 7

Number of TCP Connections to Saturate Bandwidth of Wireless Networks 达到无线网络饱和带宽的TCP连接数

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006665

J. Funasaka, Hiroyasu Obata, K. Ishida

引用次数: 0

Improving Accuracy of Localization with Portable APs in Ultra-Narrow-Band-based LPWA Networks 利用便携式ap提高超窄带LPWA网络定位精度

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006648

Miya Fukumoto, Takuya Yoshihiro

{"title":"Improving Accuracy of Localization with Portable APs in Ultra-Narrow-Band-based LPWA Networks","authors":"Miya Fukumoto, Takuya Yoshihiro","doi":"10.23919/ICMU48249.2019.9006648","DOIUrl":"https://doi.org/10.23919/ICMU48249.2019.9006648","url":null,"abstract":"Low-Power Wide-Area networks (LPWA) are useful to collect data from tiny devices distributed in a wide geographic area of land. Since LPWA devices often need to save power consumption and are less functional, localization of devices are addressed as one of the important practical problems. UNB (Ultra Narrow Band)-based LPWA networks such as Sigfox are one of the major LPWA services for IoT applications, which has a long communication range more than 10km. However, due to the long-range communications and the property of UNB-based modulation, it is preferable to use RSSI (Radio Signal Strength Indicator) in localization so that position estimation errors are large. In this paper, we propose a method to improve accuracy of device localization by utilizing portable Access Points (APs). We use a vehicle equipped with a portable AP to collect RSSI measurements. By introducing distance-based weighting technique, we improve the localization accuracy in combination with stationary and portable APs. Through evaluation in Wakayama city, we demonstrated that the portable AP and the new weighting technique effectively work in UNB-based LPWA networks.","PeriodicalId":348402,"journal":{"name":"2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116338027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Implementation of Layer 2 Overlay Mesh Network and Edge Computing Platform for IoT 一种面向物联网的二层覆盖网状网络及边缘计算平台的实现

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006640

Y. Owada, Goshi Sato, K. Temma, T. Kuri, M. Inoue, Takeshi Nagano

引用次数: 1

[Copyright notice] (版权)

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/icmu48249.2019.9006634

引用次数: 0

Edge Computing for Mobile Robots: Multi-Robot Feature-Based Lidar Odometry with FPGAs 移动机器人的边缘计算:基于fpga的多机器人特征激光雷达里程计

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006646

Qingqing Li, F. Yuhong, J. P. Queralta, Tuan Anh Nguyen Gia, H. Tenhunen, Zhuo Zou, Tomi Westerlund

引用次数: 20

Layer 2 Packet Authentication for IoT Sensor Networks 物联网传感器网络的第二层数据包认证

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006658

S. Seno

{"title":"Layer 2 Packet Authentication for IoT Sensor Networks","authors":"S. Seno","doi":"10.23919/ICMU48249.2019.9006658","DOIUrl":"https://doi.org/10.23919/ICMU48249.2019.9006658","url":null,"abstract":"With the advance of IoT (Internet of Things), the amount of sensor data transmitted on wireless sensor networks (WSNs) around us are increasing tremendously thanks to rapid growth of various IoT applications. Such sensor data are vulnerable to security threats if not secured by proper security measures built upon WSN protocols. One of the most important security measures is data authentication for transmitted data. Naturally there have been a lot of works on authentication of WSN packets through transmission channel, including IEEE 802.11i which defines the security features of the wireless LAN. However, most of such works have limited their authentication scope on data packets. Although some works propose authentication for packets other than data packets, they usually require an extension of the existing packet format such as IEEE 802.11, or they make use of its undefined fields, and thus they will introduce the risk of interoperability problems with existing networks. This paper proposes a novel packet authentication method for Layer 2 networks which addresses the above two issues. The proposed method is applicable to not only data packets but also other types of packets, and it does not require modification of the standard packet format. It employs a packet's FCS (Frame Check Sequence) field for both authentication and frame error detection and it can be safely introduced to existing WSNs.","PeriodicalId":348402,"journal":{"name":"2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127858487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transmission Reduction Scheme in an Emergency Warning System with LTE D2D 基于LTE D2D的应急预警系统中的传输减少方案

2019 Twelfth International Conference on Mobile Computing and Ubiquitous Network (ICMU) Pub Date : 2019-11-01 DOI: 10.23919/ICMU48249.2019.9006653

Y. Musaka, Yoshitaka Nakamura, H. Inamura, Xiaohong Jiang

引用次数: 2