A Study of LoRa: Long Range &amp; Low Power Networks for the Internet of Things

Augustin, Aloÿs; Yi, Jiazi; Clausen, Thomas; Townsley, W. Mark

doi:10.3390/s16091466

Cited by 1,171 publications

(769 citation statements)

References 13 publications

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“…In [13], researchers were not able to observe an improved sensitivity with increasing spreading factors. Bor et al [14] found that LoRa's ability of penetrating buildings is rather limited compared to what was originally claimed.…”

Section: Related Workmentioning

confidence: 99%

An Experimental Evaluation of the Reliability of LoRa Long-Range Low-Power Wireless Communication

Cattani

Boano

Römer

2017

JSAN

179

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Recent technological innovations allow compact radios to transmit over long distances with minimal energy consumption and could drastically affect the way Internet of Things (IoT) technologies communicate in the near future. By extending the communication range of links, it is indeed possible to reduce the network diameter to a point that each node can communicate with almost every other node in the network directly. This drastically simplifies communication, removing the need of routing, and significantly reduces the overhead of data collection. Long-range low-power wireless technology, however, is still at its infancy, and it is yet unclear (i) whether it is sufficiently reliable to complement existing short-range and cellular technologies and (ii) which radio settings can sustain a high delivery rate while maximizing energy-efficiency. To shed light on this matter, this paper presents an extensive experimental study of the reliability of LoRa , one of the most promising long-range low-power wireless technologies to date. We focus our evaluation on the impact of physical layer settings on the effective data rate and energy efficiency of communications. Our results show that it is often not worth tuning parameters, thereby reducing the data rate in order to maximize the probability of successful reception, especially on links at the edge of their communication range. Furthermore, we study the impact of environmental factors on the performance of LoRa, and show that higher temperatures significantly decrease the received signal strength and may drastically affect packet reception.

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Section: Related Workmentioning

confidence: 99%

An Experimental Evaluation of the Reliability of LoRa Long-Range Low-Power Wireless Communication

Cattani

Boano

Römer

2017

JSAN

179

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“…On one hand, LoRa is a modulation based on a variation of chirp spread spectrum (CSS) with integrated Forward Error Correction (FEC) [6]. Therefore, it uses the entire channel bandwidth to broadcast a signal, making it robust to channel noise and resistant to multipath, fading and the Doppler effect, even at low power.…”

Section: Lorawan For Geolocationmentioning

confidence: 99%

GPS-free geolocation using LoRa in low-power WANs

Fargas

Petersen

2017

2017 Global Internet of Things Summit (GIoTS)

145

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Abstract-Internet of Things (IoT) has been growing over the last few years in multiple applications and due to the high need GPS for tracking capabilities, an innovative opportunity arises. This paper reports on a design and implementation of a LoRaWAN tracking system which is capable exploiting transmitted packages to calculate the current position without the use of GPS or GSM. This is done using the low power technology LoRa where the geolocation is calculated applying a multilateration algorithm on the gateways timestamps from received packages. The whole system consisted of an end-node, four gateways, a server and a java application to store the obtained data in a MySQL database.

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“…By relying on mobile telecommunications technology, expense is exacerbated by the number of devices and the amount of data they transfer. This is mitigated somewhat by advances in lower-range wireless communication protocols like ZigBee and LoRa, which have lower power requirements (only one percent of the power used in mobile telecommunications), but require investment in transmission infrastructure to operate [3], [4]. The compromise of reduced power (and hence range) using the limited range is that the devices have to operate cooperatively in order to enable multihop routing over longer distances when the packet size and the rate of communication is limited.…”

Section: Iot Devices For Smart Citiesmentioning

confidence: 99%

Wearable and autonomous computing for future smart cities: Open challenges

Balsamo

Merrett

Zaghari

et al. 2017

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)

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Abstract-The promise of smart cities offers the potential to change the way we live, and refers to the integration of IoT systems for people-centred applications, together with the collection and processing of data, and associated decision making. Central to the realization of this are wearable and autonomous computing systems. There are considerable challenges that exist in this space that require research across different areas of electronics and computer science; it is this multidisciplinary consideration that is novel to this paper. We consider these challenges from different perspectives, involving research in devices, infrastructure and software. Specifically, the challenges considered are related to IoT systems and networking, autonomous computing, wearable sensors and electronics, and the coordination of collectives comprising human and software agents.

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A Study of LoRa: Long Range & Low Power Networks for the Internet of Things

Cited by 1,171 publications

References 13 publications

An Experimental Evaluation of the Reliability of LoRa Long-Range Low-Power Wireless Communication

An Experimental Evaluation of the Reliability of LoRa Long-Range Low-Power Wireless Communication

GPS-free geolocation using LoRa in low-power WANs

Wearable and autonomous computing for future smart cities: Open challenges

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