A Fair Channel Hopping Scheme for LoRa Networks with Multiple Single-Channel Gateways

Figueiredo, Alexandre; Luís, Miguel; Zúquete, André

doi:10.3390/s22145260

Cited by 3 publications

(2 citation statements)

References 17 publications

(21 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several methods for maintaining the ISM communication link, based on monitoring the load of the available communication channels [6]- [8]. This method implies the use of predefined channels for data transmission over a point-to-point master-slave link.…”

Section: Algorithm Of the Methodsmentioning

confidence: 99%

A method for maintaining a stable ISM band point-to-point wireless communication link in the presence of interference

Saletović,

Babović,

Hadžić

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

This paper presents a new method that enables automatic channel change in case of intense interference on the active channel of a wireless communication point-to-point link. Channel change algorithms on the master and slave side of the communication link are presented, which enable the automatic selection of a new communication channel from a predefined set of available communication channels. By applying this method, it is possible to maintain a stable communication link in case of intense unpredictable interference on the transmitter or receiver side. The method applies to two-way master-slave communication links, regardless of the frequency spectrum and the number of used communication channels.

show abstract

Section: Algorithm Of the Methodsmentioning

confidence: 99%

A method for maintaining a stable ISM band point-to-point wireless communication link in the presence of interference

Saletović,

Babović,

Hadžić

et al. 2023

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…The authors of 11 suggested to use of multiple single-channel gateways to achieve fair transmission for all end nodes in the network by dynamically adjusting the channel allocation. However, this paper did not explicitly describe the MCU used, and it did not implement edge computing into the gateways.…”

Section: Related Workmentioning

confidence: 99%

A novel single-channel edge computing LoRa gateway for real-time confirmed messaging

Zhong,

Nie

2024

Sci Rep

View full text Add to dashboard Cite

LoRaWAN has become the technology of choice for increasing Internet of Things applications owing to its long range and low power consumption characteristics. However, in the uplink confirmed messaging cases, the entire retransmission could take several seconds, so it cannot be used in scenarios that require rapid confirmed messaging, such as emergency alerting and real-time controlling applications. Nevertheless, there has been limited work targeting this issue. This study presents a novel LoRaWAN gateway using edge computing to expedite the confirmed messaging process by generating the acknowledgment (ACK) locally, so that the confirmed messaging time can be significantly reduced. Additionally, the resource utilization of the network server can also be decreased due to the use of edge computing. We verified the effectiveness of our solution through extensive simulations and experiments. The confirmed messaging time between the end nodes and the gateway averaged 43 ms for a maximum of 2 retransmissions. With the adoption of edge computing on the gateway, the network server’s central processing unit (CPU), memory, and bandwidth peak utilization decrease from 53.51 to 39.46, 73.88 to 72.11%, and 4422.68 kbps to 3271.27 kbps, respectively. In addition, the network server’s system load decreases from 2.15 to 1.69, while the gateway cost is reduced by almost $$\$$$ $ 38 compared to the benchmark products.

show abstract

Propagation Measurements for IQRF Network in an Urban Environment

Bouzidi

Mohamed²,

Dalveren³

et al. 2022

Sensors

View full text Add to dashboard Cite

Recently, IQRF has emerged as a promising technology for the Internet of Things (IoT), owing to its ability to support short- and medium-range low-power communications. However, real world deployment of IQRF-based wireless sensor networks (WSNs) requires accurate path loss modelling to estimate network coverage and other performances. In the existing literature, extensive research on propagation modelling for IQRF network deployment in urban environments has not been provided yet. Therefore, this study proposes an empirical path loss model for the deployment of IQRF networks in a peer-to-peer configured system where the IQRF sensor nodes operate in the 868 MHz band. For this purpose, extensive measurement campaigns are conducted outdoor in an urban environment for Line-of-Sight (LoS) and Non-Line-of-Sight (NLoS) links. Furthermore, in order to evaluate the prediction accuracy of well-known empirical path loss models for urban environments, the measurements are compared with the predicted path loss values. The results show that the COST-231 Walfisch–Ikegami model has higher prediction accuracy and can be used for IQRF network planning in LoS links, while the COST-231 Hata model has better accuracy in NLoS links. On the other hand, the effects of antennas on the performance of IQRF transceivers (TRs) for LoS and NLoS links are also scrutinized. The use of IQRF TRs with a Straight-Line Dipole Antenna (SLDA) antenna is found to offer more stable results when compared to IQRF (TRs) with Meander Line Antenna (MLA) antenna. Therefore, it is believed that the findings presented in this article could offer useful insights for researchers interested in the development of IoT-based smart city applications.

show abstract

A Fair Channel Hopping Scheme for LoRa Networks with Multiple Single-Channel Gateways

Cited by 3 publications

References 17 publications

A method for maintaining a stable ISM band point-to-point wireless communication link in the presence of interference

A method for maintaining a stable ISM band point-to-point wireless communication link in the presence of interference

A novel single-channel edge computing LoRa gateway for real-time confirmed messaging

Propagation Measurements for IQRF Network in an Urban Environment

Contact Info

Product

Resources

About