Víctor Sempere-Payá's research while affiliated with Universitat Politècnica de València and other places

Publications (20)

Article
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Slope Entropy (SlpEn) is a very recently proposed entropy calculation method. It is based on the differences between consecutive values in a time series and two new input thresholds to assign a symbol to each resulting difference interval. As the histogram normalisation value, SlpEn uses the actual number of unique patterns found instead of the the...
Article
The Internet of Things is becoming a key enabler for a wide range of novel applications. For example, Smart applications in rural environments can help optimizing agricultural resources. Given rural environment characteristics, the low power wide area network solution LoRaWAN is a perfect candidate, providing wide coverage of several kilometres, wi...
Article
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Industry 4.0 digitization requirements have led to widespread adoption of industrial wireless sensor networks (IWSNs) in manufacturing environments. These require strict control of the traffic flowing over the network to ensure the quality of service. Software-defined networks (SDNs) can address this challenge, as their centralized operation allows...
Article
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Industrial Wireless Sensor Networks (IWSN) are becoming increasingly popular in production environments due to their ease of deployment, low cost and energy efficiency. However, the complexity and accuracy demanded by these environments requires that IWSN implement quality of service mechanisms that allow them to operate with high determinism. For...
Article
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Communication networks are a key element in the development of Smart Cities. This field is a constantly evolving environment, for which new protocols are constantly appearing. Due to the heterogeneous nature of the technologies, the most appropriate candidate must be selected in order to get the best performance to satisfy the application requireme...
Article
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The growing use of mobile nodes in manufacturing environments is increasing the Quality of Service (QoS) requirements of the communications infrastructures that support them, as is the case with Industrial Wireless Sensor Networks (IWSN). Managing networks using Software Defined Networks (SDN) addresses the challenge of handling multiple sources in...
Article
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Emerging Industry 4.0 applications require ever-increasing amounts of data and new sources of information to more accurately characterize the different processes of a production line. Industrial Internet of Things (IIoT) technologies, and in particular Wireless Sensor Networks (WSNs), allow a large amount of data to be digitized at a low energy cos...
Article
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The adoption of LoRaWAN as a technology for wireless deployments in many applications, such as smart cities or industry 4.0, still presents challenges such as energy consumption, robustness, or reduced throughput in harsh, noisy scenarios. Class B is a MAC mode that allows better performance in downlink traffic but has difficulties regarding scalab...
Article
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Wireless sensor networks (WSNs) play a key role in the ecosystem of the Industrial Internet of Things (IIoT) and the definition of today’s Industry 4.0. These WSNs have the ability to sensor large amounts of data, thanks to their easy scalability. WSNs allow the deployment of a large number of self-configuring nodes and the ability to automatically...
Article
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IWSNs (Industrial Wireless Sensor Networks) have become the next step in the evolution of WSN (Wireless Sensor Networks) due to the nature and demands of modern industry. With this type of network, flexible and scalable architectures can be created that simultaneously support traffic sources with different characteristics. Due to the great diversit...
Article
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Low-power wide-area network (LPWAN) technologies are becoming a widespread solution for wireless deployments in many applications, such as smart cities or Industry 4.0. However, there are still challenges to be addressed, such as energy consumption and robustness. To characterize and optimize these types of networks, the authors have developed an o...
Article
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Today, a wide range of developments and paradigms require the use of embedded systems characterized by restrictions on their computing capacity, consumption, cost, and network connection. The evolution of the Internet of Things (IoT) towards Industrial IoT (IIoT) or the Internet of Multimedia Things (IoMT), its impact within the 4.0 industry, the e...
Article
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The Industrial Internet of Things (IIoT) is having an ever greater impact on industrial processes and the manufacturing sector, due the capabilities of massive data collection and interoperability with plant processes, key elements that are focused on the implementation of Industry 4.0. Wireless Sensor Networks (WSN) are one of the enabling technol...
Article
Full-text available
Wireless Sensor Networks have become a key enabler for Industrial Internet of Things (IoT) applications; however, to adapt to the derived robust communication requirements, deterministic and scheduled medium access should be used, along with other features, such as channel hopping and frequency diversity. Implementing these mechanisms requires a co...
Article
Full-text available
This paper introduces a novel quality estimator that uses different metrics to decide the best path towards the root in Wireless Sensor Networks. The different metrics are assessed at medium access control layer (MAC), under the IEEE 802.15.4 standard, and are used at network layer, enhancing the best path selection process done by the routing prot...
Article
Full-text available
This paper considers the framed ALOHA protocol for a finite number of terminals. Terminals are single-buffered, i.e. each one can store only one packet. We derive the throughput and the delay under two types of queue disciplines, first-in-first-out (FIFO) and last-in-first-out LIFO. It is assumed that terminals are independent each other and genera...
Article
In spite of their limitations, wireless networks are being increasingly used in industrial environments. The electromagnetic phenomena that can occur, along with the interference that may occur due to it being an open medium, mean that fluctuations in latencies are often produced. These drawbacks limit the use of wireless networks for distributed f...

Citations

... The modus operandi of IWSN is that the sensors collect data from the indoor or outdoor environment and deliver it to a central node or controller for processing, decision making, and control. IWSN usages the IoT based on communications [15] [16] where the internet connection is either with randomly selected neighbor nodes or with some IEEE standards algorithms ( RFC 6550:RPL-based Industrial Networks [18]). However, due to the random deployment of sensor nodes, multihop communication [19]. ...
... With the increasing demand for the Internet-of-Things (IoT), Bluetooth Low-Energy (BLE) has become a popular solution for short-range communication of wireless applications, such as wearable devices, sensor monitoring platforms, and smart cities [1][2][3][4][5]. However, due to the limitations of application scenarios, BLE devices often have the characteristics of small volume and are easy to carry. ...
... To enable the introduction of additional flows in industrial and automotive networks, an interesting solution widely investigated in the relevant literature is the adoption of the Software-Defined Networking (SDN) paradigm [3]- [7], where the SDN controller is in charge of changing the network configuration of each node at run time. Moreover, SDN allows to achieve flexible and easily manageable networks by providing a clear decoupling between the data plane and the centralized control plane, thus enabling a better resource allocation [8]. ...
... This trusted network infrastructure, in which the TSN and the low power IWSN resources are orchestrated with a centralized SDN controller, will be validated ensuring that the expected Quality of Service (QoS) is achieved. This area of work includes the development of software-defined wireless industrial interfaces for data communication, paying special attention to requirements such as predictability and determinism, high reliability and trustability, low consumption and efficient and fast network deployment [10], while reducing the installation cost of new-wired infrastructure. Time-sensitive transmission of data over deterministic Ethernet networks is also required for applications that require very low transmission latency and high availability and can use the floor plant wired network infrastructure. ...
... The window inbetween two beacons is divided into small slots that can be allocated for end devices to be used for downlink traffic. However, it increases end device power consumption as the device must be synchronized all the time [13]. Class C, on the other hand, entitles end devices to have an almost continuous receive window where their radio interfaces are always on. ...
... The authors stress the difference between multi-objective optimization and multi-constrained problem setting. Vera-Pérez et al. [139] examine the integration of RPL to IEEE 802.15.4e with time-slotted channel-hopping (TSCH) medium access mechanism. In particular, Ref. [139] characterizes the long deployment delays required for such networks to become operational and able to start exchanging data messages. ...
... Many real-world WSN applications, including smart grids, smart agriculture, and smart health, would necessitate the deployment of tens of thousands to hundreds of thousands of sensor networks and actuators [42]. An efficient WSN management system must be included in order to guarantee correct operation and performance in terms of throughput of such a network of sensor nodes [32,43]. ...
... This technology is often used for V2V communication by allowing vehicles to form ad-hoc networks that dynamically change. • Bluetooth: A third technology proposed to enable effective communication in ITSs is Bluetooth, particularly the Bluetooth low energy (BLE) 5.0 standard [24]. The main advantage of Bluetooth is the fact that it is a widely accepted technology with high market penetration. ...
... Similar to "Smart Semantic middleware", we also have multimedia aware middlewares to provide services of handling multimedia based events between distributed platforms and applications. Existing research in this category is focused on the establishment of architecture [96] for Multimedia ...