The Experts below are selected from a list of 33159 Experts worldwide ranked by ideXlab platform
Chenyang Lu - One of the best experts on this subject based on the ideXlab platform.
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empirical study and enhancements of industrial wireless sensor actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor–actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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Empirical Study and Enhancements of Industrial Wireless Sensor–Actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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implementation and experimentation of industrial wireless sensor actuator Network Protocols
International Conference on Embedded Wireless Systems and Networks, 2015Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications. However, such Networks pose unique challenges due to their critical demands on reliability and real-time performance. While industrial WSANs have received attention in the research community, most published results to date focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs widely adopted in the process industries, including multi-channel TDMA with shared slots at the MAC layer and reliable graph routing supporting path redundancy. We then performed a comparative study of the two alternative routing approaches adopted by WirelessHART, namely source routing and graph routing. Our study shows that graph routing leads to significant improvement over source routing in term of worst-case reliability, at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency.
Dolvara Gunatilaka - One of the best experts on this subject based on the ideXlab platform.
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empirical study and enhancements of industrial wireless sensor actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor–actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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Empirical Study and Enhancements of Industrial Wireless Sensor–Actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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implementation and experimentation of industrial wireless sensor actuator Network Protocols
International Conference on Embedded Wireless Systems and Networks, 2015Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications. However, such Networks pose unique challenges due to their critical demands on reliability and real-time performance. While industrial WSANs have received attention in the research community, most published results to date focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs widely adopted in the process industries, including multi-channel TDMA with shared slots at the MAC layer and reliable graph routing supporting path redundancy. We then performed a comparative study of the two alternative routing approaches adopted by WirelessHART, namely source routing and graph routing. Our study shows that graph routing leads to significant improvement over source routing in term of worst-case reliability, at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency.
H.b. Russell - One of the best experts on this subject based on the ideXlab platform.
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Network Protocols for frequency-hop packet radios with decoder side information
IEEE Journal on Selected Areas in Communications, 1994Co-Authors: M.b. Pursley, H.b. RussellAbstract:Reliable data distribution within spread-spectrum packet radio Networks requires high performance from the Network Protocols. This paper describes research in forwarding and routing Protocols that are designed specifically for slow-frequency hop (SFH) packet radio Networks in which some of the radios are subjected to excessive interference. It is shown that information extracted from the decoder can be used to aid the Network Protocols. New metrics are introduced that use this information to give a quantitative assessment of the interference environment experienced by the receiver in an SFH radio. Forwarding Protocols are developed that can react quickly to local sources of interference, and the metrics that are introduced permit the routing algorithm to react to changes in the interference conditions in the Network.
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Use of side information in frequency-hop packet radio Network Protocols
Proceedings of MILCOM '93 - IEEE Military Communications Conference, 1993Co-Authors: M.b. Pursley, H.b. RussellAbstract:Reliable data distribution within spread-spectrum packet radio Networks requires high performance from the communication links and the Network Protocols. Side information can be extracted from the received signals, and this information can be used to improve the quality of the links and to aid the Network Protocols in establishing reliable routes in the Network. Reliable side information is obtained in the slow-frequency-hop (SFH) receiver from the demodulation of test symbols that are inserted into the message stream at the transmitter. Results are reported on an evaluation of techniques and algorithms for using this side information to enhance link and Network performance in SFH spread-spectrum packet radio Networks.
S. Bocking - One of the best experts on this subject based on the ideXlab platform.
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Object-oriented Network Protocols
Proceedings of INFOCOM '97, 1997Co-Authors: S. BockingAbstract:A wide-range of various Network communication services and Protocols is required to efficiently support the diverse Networks and their applications. It is usual to design a protocol for each new service which is required. An attractive alternative is to use a modular and object-oriented architecture for the design and implementation of Network Protocols. With it, Protocols for individual service provision can be created by simply combining generic protocol functions blocks. This paper presents a new reference model which gives a foundation for the object-oriented design and implementation of modular Network Protocols. It also discusses a case study of an existing object-oriented Network communication system.
Chengjie Wu - One of the best experts on this subject based on the ideXlab platform.
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empirical study and enhancements of industrial wireless sensor actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor–actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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Empirical Study and Enhancements of Industrial Wireless Sensor–Actuator Network Protocols
IEEE Internet of Things Journal, 2017Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications to incorporate the Internet of Things (IoT). In contrast to other IoT applications, process automation poses unique challenges for industrial WSAN due to its critical demands on reliable and real-time communication. While industrial WSANs have received increasing attention in the research community recently, most published results to date have focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs that has been widely adopted in the process industries based on the HART. We then performed a series of empirical studies showing that graph routing leads to significant improvement over source routing in terms of worst-case reliability, but at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency. Our studies also suggest that channel hopping can mitigate the burstiness of transmission failures; a larger channel distance can reduce consecutive transmission failures over links sharing a common receiver. Based on these insights, we developed a novel channel hopping algorithm that utilizes far away channels for transmissions. Furthermore, it prevents links sharing the same destination from using channels with strong correlations. Our experimental results demonstrate that our algorithm can significantly improve Network reliability and energy efficiency.
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implementation and experimentation of industrial wireless sensor actuator Network Protocols
International Conference on Embedded Wireless Systems and Networks, 2015Co-Authors: Dolvara Gunatilaka, Chengjie Wu, Chenyang LuAbstract:Wireless sensor-actuator Networks (WSANs) offer an appealing communication technology for process automation applications. However, such Networks pose unique challenges due to their critical demands on reliability and real-time performance. While industrial WSANs have received attention in the research community, most published results to date focused on the theoretical aspects and were evaluated based on simulations. There is a critical need for experimental research on this important class of WSANs. We developed an experimental testbed by implementing several key Network Protocols of WirelessHART, an open standard for WSANs widely adopted in the process industries, including multi-channel TDMA with shared slots at the MAC layer and reliable graph routing supporting path redundancy. We then performed a comparative study of the two alternative routing approaches adopted by WirelessHART, namely source routing and graph routing. Our study shows that graph routing leads to significant improvement over source routing in term of worst-case reliability, at the cost of longer latency and higher energy consumption. It is therefore important to employ graph routing algorithms specifically designed to optimize latency and energy efficiency.