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Dacfey Dzung

Bio: Dacfey Dzung is an academic researcher. The author has contributed to research in topics: Wireless & Wireless sensor network. The author has an hindex of 10, co-authored 14 publications receiving 584 citations.

Papers
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Journal ArticleDOI
TL;DR: This paper considers the problem of designing a high-performance wireless network for industrial control, targeting at Gbps data rates and 10-$s-level cycle time, and takes a look at the most advanced standards and emerging trends that may be applicable.
Abstract: Industrial applications aimed at real-time control and monitoring of cyber-physical systems pose significant challenges to the underlying communication networks in terms of determinism, low latency, and high reliability. The migration of these networks from wired to wireless could bring several benefits in terms of cost reduction and simplification of design, but currently available wireless techniques cannot cope with the stringent requirements of the most critical applications. In this paper, we consider the problem of designing a high-performance wireless network for industrial control, targeting at Gbps data rates and 10- ${\mu }$ s-level cycle time. To this aim, we start from analyzing the required performance and deployment scenarios, then we take a look at the most advanced standards and emerging trends that may be applicable. Building on this investigation, we outline the main directions for the development of a wireless high-performance system.

171 citations

Journal ArticleDOI
TL;DR: A truly wireless S/A interface with wireless power and wireless communication for real-time factory operation has been presented.
Abstract: A truly wireless S/A interface with wireless power and wireless communication for real-time factory operation has been presented WISA uses IEEE 802151 radio transceivers, but adds an optimized TDMA protocol to support a high number (120) of S/As per BS as well as short cycle times (2,048 μs)

119 citations

Journal ArticleDOI
05 Mar 2019
TL;DR: An innovative approach for high-performance industrial wireless networks [wireless high performance (WirelessHP)] is presented, based on a substantial redesign of the lower layers of the industrial wireless protocol stack, with the aim of supporting the requirements of critical industrial control applications.
Abstract: Wireless networks are ever more deployed in the industrial control scenario, thanks to the numerous benefits they can bring, especially in terms of costs and flexibility. However, some critical fields of application, such as motion control, power systems automation, or power electronics control, to mention some, have extremely tight requirements in terms of timeliness, reliability, and determinism, which nowadays can only be satisfied by wired communication networks. Indeed, the available industrial wireless solutions are far from offering adequate performance levels, especially in the timing budget, due to the native limitations of their physical (PHY) layers. In this paper, an innovative approach for high-performance industrial wireless networks [wireless high performance (WirelessHP)] is presented, based on a substantial redesign of the lower layers of the industrial wireless protocol stack, with the aim of supporting the requirements of critical industrial control applications. The required levels of timeliness, reliability, and determinism are first derived through a comprehensive survey that looks at real-world application scenarios as well as at the performance of wired networks for industrial control, such as real-time Ethernet networks. The design of a new solution, which is able to satisfy these targets, is then discussed in detail, introducing a low-latency PHY layer that aims at reducing the transmission time of short packets to $1~\mu \text{s}$ , or even less. The feasibility of the proposed solution is presented through an experimental demonstrator based on software-defined radios, while its performance bounds are computed through theoretical analyses. Finally, future activities in the context of WirelessHP are widely discussed, providing an overview of the directions that will have to be addressed, particularly in the design of the upper layers.

87 citations

Journal ArticleDOI
TL;DR: This work proposes a new paradigm, which relies on a customized protocol stack to achieve a multi-gigabyteper-second data rate, submicrosecond latency, and ultrahigh reliability, and outlines the future challenges.
Abstract: Wireless networks for industrial control have long been considered a good technical solution for companies because of reduced costs and improved long-term reliability. However, critical applications in the Industry 4.0 era demand high performance (HP) in reliability and latency. Existing industrial wireless solutions are not able to meet these requirements because they are built on general-purpose chips and standards. We propose a new paradigm we call WirelessHP, which relies on a customized protocol stack to achieve a multi-gigabyteper-second data rate, submicrosecond latency, and ultrahigh reliability. We show the latest progress in this direction, outline the future challenges, and appeal for collaborations on many topics.

86 citations

Proceedings ArticleDOI
19 Sep 2005
TL;DR: A novel factory communication system, called WISA (wireless interface for sensors and actuators), has been developed which provides both wireless communication and wireless power supply and re-uses existing RF transceivers.
Abstract: For industrial automation applications using production machines and robotic installations, truly wireless systems offer advantages in terms of cost and flexibility. Requirements on power supply and real time communication for such applications are highly demanding, and cannot be satisfied with today's off-the-shelf systems. A novel factory communication system, called WISA (wireless interface for sensors and actuators), has thus been developed which provides both wireless communication and wireless power supply. The power supply is based on magnetic coupling while real time wireless communication uses a new TDMA protocol combined with frequency hopping. The TDMA protocol uses optimized parameters for reliable and low delay transmission for a high number of active nodes. The frequency hopping sequences are optimized to mitigate effects of multi-path propagation, interference from other systems operating in the 2.4 GHz ISM band, and self-interference. The new design re-uses existing RF transceivers. The paper explains design concepts of the WISA communication system, and describes practical experience gained with its deployment in industrial environments

64 citations


Cited by
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Journal ArticleDOI
TL;DR: The aim is to provide a contemporary look at the current state of the art in IWSNs and discuss the still-open research issues in this field and to make the decision-making process more effective and direct.
Abstract: In today's competitive industry marketplace, the companies face growing demands to improve process efficiencies, comply with environmental regulations, and meet corporate financial objectives. Given the increasing age of many industrial systems and the dynamic industrial manufacturing market, intelligent and low-cost industrial automation systems are required to improve the productivity and efficiency of such systems. The collaborative nature of industrial wireless sensor networks (IWSNs) brings several advantages over traditional wired industrial monitoring and control systems, including self-organization, rapid deployment, flexibility, and inherent intelligent-processing capability. In this regard, IWSN plays a vital role in creating a highly reliable and self-healing industrial system that rapidly responds to real-time events with appropriate actions. In this paper, first, technical challenges and design principles are introduced in terms of hardware development, system architectures and protocols, and software development. Specifically, radio technologies, energy-harvesting techniques, and cross-layer design for IWSNs have been discussed. In addition, IWSN standards are presented for the system owners, who plan to utilize new IWSN technologies for industrial automation applications. In this paper, our aim is to provide a contemporary look at the current state of the art in IWSNs and discuss the still-open research issues in this field and, hence, to make the decision-making process more effective and direct.

1,595 citations

Journal ArticleDOI
26 Sep 2018
TL;DR: In this article, a principled and scalable framework which takes into account delay, reliability, packet size, network architecture and topology (across access, edge, and core), and decision-making under uncertainty is provided.
Abstract: Ensuring ultrareliable and low-latency communication (URLLC) for 5G wireless networks and beyond is of capital importance and is currently receiving tremendous attention in academia and industry. At its core, URLLC mandates a departure from expected utility-based network design approaches, in which relying on average quantities (e.g., average throughput, average delay, and average response time) is no longer an option but a necessity. Instead, a principled and scalable framework which takes into account delay, reliability, packet size, network architecture and topology (across access, edge, and core), and decision-making under uncertainty is sorely lacking. The overarching goal of this paper is a first step to filling this void. Towards this vision, after providing definitions of latency and reliability, we closely examine various enablers of URLLC and their inherent tradeoffs. Subsequently, we focus our attention on a wide variety of techniques and methodologies pertaining to the requirements of URLLC, as well as their applications through selected use cases. These results provide crisp insights for the design of low-latency and high-reliability wireless networks.

779 citations

Journal ArticleDOI
TL;DR: This paper discusses a selection of promising and interesting research areas in the design of protocols and systems for wireless industrial communications that have either emerged as hot topics in the industrial communications community in the last few years, or which could be worthwhile research Topics in the next few years.
Abstract: In this paper we discuss a selection of promising and interesting research areas in the design of protocols and systems for wireless industrial communications. We have selected topics that have either emerged as hot topics in the industrial communications community in the last few years (like wireless sensor networks), or which could be worthwhile research topics in the next few years (for example cooperative diversity techniques for error control, cognitive radio/opportunistic spectrum access for mitigation of external interferences).

696 citations

Journal ArticleDOI
TL;DR: This paper comprehensively survey the body of existing research on I-IoT, and proposes a three-dimensional framework to explore the existing research space and investigate the adoption of some representative networking technologies, including 5G, machine-to-machine communication, and software-defined networking.
Abstract: The vision of Industry 4.0, otherwise known as the fourth industrial revolution, is the integration of massively deployed smart computing and network technologies in industrial production and manufacturing settings for the purposes of automation, reliability, and control, implicating the development of an Industrial Internet of Things (I-IoT). Specifically, I-IoT is devoted to adopting the IoT to enable the interconnection of anything, anywhere, and at any time in the manufacturing system context to improve the productivity, efficiency, safety, and intelligence. As an emerging technology, I-IoT has distinct properties and requirements that distinguish it from consumer IoT, including the unique types of smart devices incorporated, network technologies and quality-of-service requirements, and strict needs of command and control. To more clearly understand the complexities of I-IoT and its distinct needs and to present a unified assessment of the technology from a systems’ perspective, in this paper, we comprehensively survey the body of existing research on I-IoT. Particularly, we first present the I-IoT architecture, I-IoT applications (i.e., factory automation and process automation), and their characteristics. We then consider existing research efforts from the three key system aspects of control, networking, and computing. Regarding control, we first categorize industrial control systems and then present recent and relevant research efforts. Next, considering networking, we propose a three-dimensional framework to explore the existing research space and investigate the adoption of some representative networking technologies, including 5G, machine-to-machine communication, and software-defined networking. Similarly, concerning computing, we again propose a second three-dimensional framework that explores the problem space of computing in I-IoT and investigate the cloud, edge, and hybrid cloud and edge computing platforms. Finally, we outline particular challenges and future research needs in control, networking, and computing systems, as well as for the adoption of machine learning in an I-IoT context.

371 citations

Journal ArticleDOI
TL;DR: In this article, the authors provide an up-to-date comprehensive survey of the IEEE TSN and IETF DetNet standards and related research studies and identify the pitfalls and limitations of the existing standards and research studies.
Abstract: Many network applications, eg, industrial control, demand ultra-low latency (ULL) However, traditional packet networks can only reduce the end-to-end latencies to the order of tens of milliseconds The IEEE 8021 time sensitive networking (TSN) standard and related research studies have sought to provide link layer support for ULL networking, while the emerging IETF deterministic networking (DetNet) standards seek to provide the complementary network layer ULL support This paper provides an up-to-date comprehensive survey of the IEEE TSN and IETF DetNet standards and the related research studies The survey of these standards and research studies is organized according to the main categories of flow concept, flow synchronization, flow management, flow control, and flow integrity ULL networking mechanisms play a critical role in the emerging fifth generation (5G) network access chain from wireless devices via access, backhaul, and core networks We survey the studies that specifically target the support of ULL in 5G networks, with the main categories of fronthaul, backhaul, and network management Throughout, we identify the pitfalls and limitations of the existing standards and research studies This survey can thus serve as a basis for the development of standards enhancements and future ULL research studies that address the identified pitfalls and limitations

316 citations