The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Kevin Curran - One of the best experts on this subject based on the ideXlab platform.
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an active low cost Mesh Networking indoor tracking system
International Journal of Ambient Computing and Intelligence, 2014Co-Authors: Sean Carlin, Kevin CurranAbstract:Indoor radio frequency tracking systems are generally quite expensive and can vary in accuracy due to interference, equipment quality or other environmental factors. Due to these limiting factors of the technology, many businesses today find it hard to justify investing in RFID tracking technologies to improve the safety, efficiency and security of their working environments. The aim of this project was to provide a budget RFID tracking system that was capable of tracking a person or object through an indoor environment. To minimize the cost of the RFID tracking system, the components of the system were built from existing electronic equipment and hardware. The software was also written to minimize licensing and support fees allowing a cost effective budget RFID tracking system to be developed. The tracking system consists of a tag, reader nodes and a PC reader which utilize synapse RF 100 engines with python scripts embedded on to the chips. The tracking system software operates through a web portal utilizing web technologies such as HTML, JavaScript and PHP to allow the tags location to be represented on a two dimensional map using scalable vector graphics. During development of the system a new trilateration algorithm was developed and used convert the signals received from the tag to a virtual position on the map correlating to the actual physical position of the tag. A unique contribution of this system is the low cost of building which we estimate as less than i¾£200 UK sterling for a five node system.
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An active low cost Mesh Networking indoor tracking system
2013 IEEE 14th International Symposium on "A World of Wireless Mobile and Multimedia Networks" (WoWMoM), 2013Co-Authors: Sean Carlin, Kevin CurranAbstract:Indoor radio frequency tracking systems are generally quite expensive and can vary in accuracy due to interference, equipment quality or other environmental factors. Due to these limiting factors of the technology, many businesses today find it hard to justify investing in RFID tracking technologies to improve the safety, efficiency and security of their working environments. The aim of this project was to provide a budget RFID tracking system that was capable of tracking a person or object through an indoor environment. To minimize the cost of the RFID tracking system, the components of the system were built from existing electronic equipment and hardware. The software was also written to minimize licensing and support fees allowing a cost effective budget RFID tracking system to be developed. The tracking system consists of a tag, reader nodes and a PC reader which utilize synapse RF 100 engines with python scripts embedded on to the chips.
Huang-chen Lee - One of the best experts on this subject based on the ideXlab platform.
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monitoring of large area iot sensors using a lora wireless Mesh network system design and evaluation
IEEE Transactions on Instrumentation and Measurement, 2018Co-Authors: Huang-chen LeeAbstract:Although many techniques exist to transfer data from the widely distributed sensors that make up the Internet of Things (IoT) (e.g., using 3G/4G networks or cables), these methods are associated with prohibitively high costs, making them impractical for real-life applications. Recently, several emerging wireless technologies have been proposed to provide long-range communication for IoT sensors. Among these, LoRa has been examined for long-range performance. Although LoRa shows good performance for long-range transmission in the countryside, its radio signals can be attenuated over distance, and buildings, trees, and other radio signal sources may interfere with the signals. Our observations show that in urban areas, LoRa requires dense deployment of LoRa gateways (GWs) to ensure that indoor LoRa devices can successfully transfer data back to remote GWs. Wireless Mesh Networking is a solution for increasing communication range and packet delivery ratio (PDR) without the need to install additional GWs. This paper presents a LoRa Mesh Networking system for large-area monitoring of IoT applications. We deployed 19 LoRa Mesh Networking devices over an $800\,\,\text {m} \times 600$ m area on our university campus and installed a GW that collected data at 1-min intervals. The proposed LoRa Mesh Networking system achieved an average 88.49% PDR, whereas the star-network topology used by LoRa achieved only 58.7% under the same settings. To the best of our knowledge, this is the first academic study discussing LoRa Mesh Networking in detail and evaluating its performance via real experiments.
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Demo Abstract: A LoRa Wireless Mesh Networking Module for Campus-Scale Monitoring
2017 16th ACM IEEE International Conference on Information Processing in Sensor Networks (IPSN), 2017Co-Authors: Q W Liang, J. H. Lin, G J Zeng, Huang-chen LeeAbstract:LoRa, an emerging wireless technology, is examined for long range communication performance in a large area. Although LoRa shows good performance for long-distance transmission in the countryside, its radio signals can be attenuated and interfered with by buildings, trees and other signal sources. In urban areas, our observation shows that LoRa requires a dense deployment of LoRa gateways to ensure that indoor LoRa devices can transfer data back to remote servers. Mesh Networking is a solution for increasing the communication range and packet delivery ratio without the need to install additional LoRa gateways. This study presents our design of a LoRa Mesh-Networking module for IoT applications (e.g.,collecting data from multiple, widely distributed sensors on a university campus). We deployed 19 LoRa Mesh-Networking devices distributed in an 800m by 600m area on campus to serve as a gateway and to collect data at one-minute intervals. The results show our LoRa Mesh Networking module achieved a 88.49% packet delivery ratio (PDR), while the LoRaWAN in star-network topology was only 58.7% under the same conditions.
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A LoRa wireless Mesh Networking module for campus-scale monitoring: demo abstract
Proceedings of the 16th …, 2017Co-Authors: Kai Hsiang Ke, J. H. Lin, Q W Liang, G J Zeng, Huang-chen LeeAbstract:LoRa, an emerging wireless technology, is examined for long range communication performance in a large area. Although LoRa shows good performance for long-distance transmission in the countryside, its radio signals can be attenuated and interfered with by buildings, trees and other signal sources. In urban areas, our observation shows that LoRa requires a dense deployment of LoRa gateways to ensure that indoor LoRa devices can transfer data back to remote servers. Mesh Networking is a solution for increasing the communication range and packet delivery ratio without the need to install additional LoRa gateways. This study presents our design of a LoRa Mesh-Networking module for IoT applications (e.g.,collecting data from multiple, widely distributed sensors on a university campus). We deployed 19 LoRa Mesh-Networking devices distributed in an 800m by 600m area on campus to serve as a gateway and to collect data at one-minute intervals. The results show our LoRa Mesh Networking module achieved a 88.49% packet delivery ratio (PDR), while the LoRaWAN in star-network topology was only 58.7% under the same conditions.
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Design and Evaluation of an Open-Source Wireless Mesh Networking Module for Environmental Monitoring
IEEE Sensors Journal, 2016Co-Authors: Huang-chen Lee, Hsiao-hsien LinAbstract:Wireless Mesh Networking extends the communication range among cooperating multiple low-power wireless radio transceivers and is useful for collecting data from sensors widely distributed over a large area. By integrating an off-the-shelf wireless design, such as the XBee module, development of sensor systems with Mesh Networking capability can be accelerated. This study introduces an open-source wireless Mesh network (WMN) module, which integrates the functions of network discovery, automatic routing control, and transmission scheduling. In addition, this design is open source in order to promote the use of wireless Mesh Networking for environmental monitoring applications. Testing of the design and the proposed Networking module is reported. The proposed wireless Mesh Networking module was evaluated and compared with XBee. The average package delivery ratio and standard deviation of the proposed WMN module and the XBee are 94.09%, 91.19%, 5.14%, and 10.25%, respectively, in a 20 node experiment. The proposed system was demonstrated to have the advantages of low-cost combined with high reliability and performance, and can aid scientists in implementing monitoring applications without the complications of complex wireless Networking issues.
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An open-source wireless Mesh Networking module for environmental monitoring
2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings, 2015Co-Authors: Hsiao-hsien Lin, Hsi-yuan Tsai, Teng-chieh Chan, Yen-shuo Huang, Yuan-sun Chu, Yu-chieh Chen, Tai-shan Liao, Yao-min Fang, Bing-jean Lee, Huang-chen LeeAbstract:Wireless Mesh Networking extends the communication range among cooperating multiple low-power wireless radio transceivers and is useful for collecting data from sensors widely distributed over a large area. By integrating an off-the-shelf wireless design, such as the XBee module, development of sensor systems with Mesh Networking capability can be accelerated. In this study, the design of an open-source wireless network module is introduced, which integrates the functions of network discovery, routing control, and transmission scheduling. In addition, this design is provided in an open-source format in order to promote the use of wireless Mesh Networking for environmental monitoring applications. Testing of the design and the proposed Networking module is reported. For a 10-node implementation an average packet delivery ratio is 95.58%. The proposed system was demonstrated to have the advantages of low-cost combined with high reliability and performance. The proposed design can aid scientists to implement monitoring applications without the complications of complex wireless Networking issues.
Sean Carlin - One of the best experts on this subject based on the ideXlab platform.
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an active low cost Mesh Networking indoor tracking system
International Journal of Ambient Computing and Intelligence, 2014Co-Authors: Sean Carlin, Kevin CurranAbstract:Indoor radio frequency tracking systems are generally quite expensive and can vary in accuracy due to interference, equipment quality or other environmental factors. Due to these limiting factors of the technology, many businesses today find it hard to justify investing in RFID tracking technologies to improve the safety, efficiency and security of their working environments. The aim of this project was to provide a budget RFID tracking system that was capable of tracking a person or object through an indoor environment. To minimize the cost of the RFID tracking system, the components of the system were built from existing electronic equipment and hardware. The software was also written to minimize licensing and support fees allowing a cost effective budget RFID tracking system to be developed. The tracking system consists of a tag, reader nodes and a PC reader which utilize synapse RF 100 engines with python scripts embedded on to the chips. The tracking system software operates through a web portal utilizing web technologies such as HTML, JavaScript and PHP to allow the tags location to be represented on a two dimensional map using scalable vector graphics. During development of the system a new trilateration algorithm was developed and used convert the signals received from the tag to a virtual position on the map correlating to the actual physical position of the tag. A unique contribution of this system is the low cost of building which we estimate as less than i¾£200 UK sterling for a five node system.
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An active low cost Mesh Networking indoor tracking system
2013 IEEE 14th International Symposium on "A World of Wireless Mobile and Multimedia Networks" (WoWMoM), 2013Co-Authors: Sean Carlin, Kevin CurranAbstract:Indoor radio frequency tracking systems are generally quite expensive and can vary in accuracy due to interference, equipment quality or other environmental factors. Due to these limiting factors of the technology, many businesses today find it hard to justify investing in RFID tracking technologies to improve the safety, efficiency and security of their working environments. The aim of this project was to provide a budget RFID tracking system that was capable of tracking a person or object through an indoor environment. To minimize the cost of the RFID tracking system, the components of the system were built from existing electronic equipment and hardware. The software was also written to minimize licensing and support fees allowing a cost effective budget RFID tracking system to be developed. The tracking system consists of a tag, reader nodes and a PC reader which utilize synapse RF 100 engines with python scripts embedded on to the chips.
Aniruddha Gokhale - One of the best experts on this subject based on the ideXlab platform.
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software defined wireless Mesh Networking for reliable and real time smart city cyber physical applications
Real-Time Networks and Systems, 2019Co-Authors: Akram Hakiri, Aniruddha Gokhale, Pascal BerthouAbstract:The growing demand for and the diverse mobility patterns of smart devices place an increasing strain on the wireless Mesh networks (WMNs) of smart city cyber physical systems (CPS). Realizing reliable and real-time smart city CPS applications is challenging because routing the data among wireless routers using existing routing algorithms that are based on Ad-Hoc and local area network flavors cannot make effective routing decisions due mainly to only local knowledge maintained by an individual router about each of its neighbors, which reflects only a partial visibility of the network. An attractive and more realistic alternative is to adopt Software Defined Networking (SDN), which offers a logically centralized, up-to-date view of the entire network by refactoring the wireless protocols into control and forwarding decisions. This paper presents solutions to overcome key challenges that must first be overcome to realize the potential of SDN in WMNs for smart city applications. Specifically, we describe a novel network architecture that integrates SDN and WMNs to perform network virtualization, routing and network traffic engineering thereby improving the predictability, reliability and the flexibility of the communication network. The benefits of this approach are demonstrated and evaluated for an emulated smart cities use case.
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Work-in-Progress: Towards Real-Time Smart City Communications using Software Defined Wireless Mesh Networking
2018 IEEE Real-Time Systems Symposium (RTSS), 2018Co-Authors: Akram Hakiri, Aniruddha GokhaleAbstract:Effective management and provisioning of communication resources is as important in meeting the real-time requirements of smart city cyber physical systems (CPS) as managing computation resources is. The communication infrastructure in Smart cities often involves wireless Mesh networks (WMNs). However, enforcing distributed and consistent control in WMNs is challenging since individual routers of a WMN maintain only local knowledge about each of its neighbors, which reflects only a partial visibility of the overall network and hence results in suboptimal resource management decisions. When WMNs must utilize emerging technologies, such as time-sensitive Networking (TSN) for the most critical communication needs, e.g., controlling traffic and pedestrian lights, these challenges are further complicated. An attractive solution is to adopt Software Defined Networking (SDN), which offers a centralized, up-to-date view of the entire network by refactoring the wireless protocols into control and forwarding decisions. This paper presents ongoing work to overcome the key challenges and support the end-to-end real-time requirements of smart city CPS applications.
Carles Gomez - One of the best experts on this subject based on the ideXlab platform.
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Bluetooth Low Energy Mesh Networks: A Survey
Sensors, 2017Co-Authors: Seyed Darroudi, Carles GomezAbstract:Bluetooth Low Energy (BLE) has gained significant momentum. However, the original design of BLE focused on star topology Networking, which limits network coverage range and precludes end-to-end path diversity. In contrast, other competing technologies overcome such constraints by supporting the Mesh network topology. For these reasons, academia, industry, and standards development organizations have been designing solutions to enable BLE Mesh networks. Nevertheless, the literature lacks a consolidated view on this emerging area. This paper comprehensively surveys state of the art BLE Mesh Networking. We first provide a taxonomy of BLE Mesh network solutions. We then review the solutions, describing the variety of approaches that leverage existing BLE functionality to enable BLE Mesh networks. We identify crucial aspects of BLE Mesh network solutions and discuss their advantages and drawbacks. Finally, we highlight currently open issues.