Life cycle of wireless sensor nodes in industrial environments

Bernhard, Hans-Peter; Springer, Andreas; Berger, Achim; Priller, Peter

doi:10.1109/wfcs.2017.7991943

Cited by 25 publications

(17 citation statements)

References 12 publications

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“…A system-level simulation is performed on a MATLAB simulator to evaluate the performances. The 100 sensors [46]- [48] follow the Poisson arrival process for packet generation and transmission. The sensors process the 100-bit packet using the proposed OFSMA system and forward the packet through 60 GHz, 55 GHz, 30 GHz, 28GHz, 10 GHz, 2.4 GHz, and 920 MHz frequency subcarrier channels using slotted-ALOHA protocol.…”

Section: Simulation Resultsmentioning

confidence: 99%

Multiband Massive Channel Random Access in Ultra-Reliable Low-Latency Communication

et al. 2020

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Ultra-Reliable Low-Latency Communication (URLLC) is challenging due to its extremely higher reliability requirement with stringent short latency packet transmission. In order to overcome this reliability and latency bound, a communication access scheme needs to assure almost error-free and high speed packet transmission. In this paper, a new multiple-access scheme-Orthogonal Frequency-Subcarrier-based Multiple Access (OFSMA)-is proposed with URLLC's high requirement adaptation. In this scheme, the packet diversity concept is incorporated to achieve the expected packet transmission reliability and a diverse number of the duplicated packet are processed with a set of operations and transmitted over randomly selected orthogonal subcarrier frequency channels. Performances of the OFSMA system are measured in terms of applying several numbers of frequency bands, a massive number of subcarrier channels, a different number of packet duplications, and a diverse rate of traffic arrival conditions. We determined the minimum number of subcarrier channels requirement to satisfy the reliability of 99.999% for different packet duplication in presence of different frequency bands. The reliability response for a fixed number of subcarrier channels is evaluated for different frequency band conditions. Finally, the air interface latency of the OFSMA system is measured for single packet uplink transmission and compared with that of a traditional OFDMA system. The performance results in terms of reliability and latency express that the OFSMA scheme can assure the expected reliability and latency defined by URLLC.

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Section: Simulation Resultsmentioning

confidence: 99%

Multiband Massive Channel Random Access in Ultra-Reliable Low-Latency Communication

et al. 2020

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“…The TDMA protocol we use in this work is the Energy and Power Efficient Synchronous Sensor Network (EPhESOS) protocol [31]. In an EPhESOS network, each node gets a specific timeslot for the communication assigned by the network coordinator.…”

Section: A Hardware and Protocolmentioning

confidence: 99%

Time Slotted Multiple-Hypothesis Interference Tracking in Wireless Networks

Karoliny

Blazek

Ademaj

et al. 2023

IEEE Internet Things J.

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Internet-of-Things and Industry 4.0 devices are often connected wirelessly. Current wireless sensor network (WSN) deployments are relying in most cases on the industrial, scientific and medical (ISM) bands without centralized resource scheduling. Thus, each device is a potential source of interference to other devices, both within its own WSN but also to devices in other collocated WSNs. If the transmission behaviour of devices from other WSNs is not random, we are able to find patterns in the time domain in their channel access. This is for example possible for periodic channel access, which is quite common for WSNs with demanding low-power and reliability requirements. The main goal of this work is to detect multiple sources of periodic interference in time slotted signal level measurements and estimate the time windows of future transmissions. This gives a WSN a certain understanding of the radio surrounding and can be used to adapt the transmission behaviour to thus avoid collisions. For this, the Multi Hypothesis Tracking algorithm is adapted and used together with timeslotbased interference measurements on low-cost sensor nodes. The applicability of the algorithm is shown with extensive simulations and the performance is demonstrated with measurements on a time division multiple access based WSN built upon the Bluetooth Low Energy physical layer.

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“…We used the BLE physical (PHY) layer and combined it with the Energy and Power Efficient Synchronous Sensor Network (EPhESOS) protocol [9] to realize an IWSN with up to 100 nodes per BS. EPhESOS provides a deterministic media access control (MAC) layer using time division multiple access (TDMA), with a superframe (SF) length of 100 ms. As hardware platform for the measurements and all applications, the Nordic™NRF52840 controller with integrated transceiver is used.…”

Section: A Hardware and Protocolmentioning

confidence: 99%