Empowering Low-Power Wide Area Networks in Urban Settings

Eletreby, Rashad; Zhang, Diana; Kumar, Swarun; Yağan, Osman

doi:10.1145/3098822.3098845

Cited by 193 publications

(97 citation statements)

References 29 publications

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“…LoRa range extension has been the focus of multiple research projects trying to increase the decoding capabilities at the gateway level for the uplink, while achieving a low power consumption by end devices . A system with a single antenna gateway that enables collaboration between end devices was proposed to overcome the challenges rising in high density deployment . However this system requires a dense deployment of end devices and a synchronization mechanism between them.…”

Section: Related Workmentioning

confidence: 99%

“…Moreover, the system uses spatial filtering techniques in order to achieve a higher SNR at the end device. While most contributions are towards improving the uplink, Snipe enhances both the uplink and downlink by using a Multiple‐Input Multiple‐Output (MIMO) design that respects the LoRa energy consumption restraints. Furthermore, MIMO support at the gateway provides low cost Angle of Arrival (AoA) and end device position estimation.…”

Section: Introductionmentioning

confidence: 99%

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Joint range extension and localization for low‐power wide‐area network

Mahfoudi

Sivadoss

Korachi³

et al. 2019

Internet Technology Letters

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This paper introduces Snipe, a novel system offering joint localization and range extensions for Low‐power wide‐area networks (LPWANs). Although LPWAN systems such as Long Range (LoRa) are designed to achieve high communication range with low energy consumption, they suffer from fading in obstructed environments with dense multipath components, and their localization system is sub‐par in terms of accuracy. In this work, Multiple‐Input Multiple‐Output techniques are leveraged to achieve a higher signal‐to‐noise ratio at both the end device and the gateway while providing an opportunistic accurate radar‐based system for localization with limited additional cost.

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Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Joint range extension and localization for low‐power wide‐area network

Mahfoudi

Sivadoss

Korachi³

et al. 2019

Internet Technology Letters

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“…Combined with accessible transceivers and unlicensed network deployment, this has made LoRaWAN particularly attractive for academic research. A number of papers have been published recently that improve LoRaWAN gateways [9,10], propose alternative access control methods for LoRaWAN [41,53], or simulate Lo-RaWAN networks [5,55]. One particularly active area of research involves combining LoRa and backscatter techniques to improve range of backscatter technologies [15,40,51,56].…”

Section: Unlicensed Lpwansmentioning

confidence: 99%

“…Choir [10] leverages radio imperfections in frequency, time, and phase to simultaneously receive several transmissions. While Choir suggests that this could enable as much as a 30× increase in network capacity, NetScatter finds that this technique would enable no more than 5-10 simultaneous transmitters [15].…”

Section: Resilient Receptionmentioning

confidence: 99%

Challenge

Ghena

Adkins

Shangguan

et al. 2019

The 25th Annual International Conference on Mobile Computing and Networking

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Low-power wide-area networks (LPWANs) are a compelling answer to the networking challenges faced by many Internet of Things devices. Their combination of low power, long range, and deployment ease has motivated a flurry of research, including exciting results on backscatter and interference cancellation that further lower power budgets and increase capacity. But despite the interest, we argue that unlicensed LPWAN technologies can only serve a narrow class of Internet of Things applications due to two principal challenges: capacity and coexistence. We propose a metric, bit flux, to describe networks and applications in terms of throughput over a coverage area. Using bit flux, we find that the combination of low bit rate and long range restricts the use case of LPWANs to sparse sensing applications. Furthermore, this lack of capacity leads networks to use as much available bandwidth as possible, and a lack of coexistence mechanisms causes poor performance in the presence of multiple, independently-administered networks. We discuss a variety of techniques and approaches that could be used to address these two challenges and enable LPWANs to achieve the promise of ubiquitous connectivity. CCS CONCEPTS • Networks → Network performance evaluation; Wireless access networks.

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“…Understanding LoRa PHY would open a path to enabling many applications such as passive localization [27], cooperative transmission [28,29], co-existing and complementing MAC protocol [30], etc. To understand LoRa PHY, one has to start from the encoding and modulation process of a packet.…”

Section: Revisiting Lora Phymentioning

confidence: 99%

Experience of LoRa low power wide area network

Liando¹

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I have reviewed the content and presentation style of this thesis and declare it is free of plagiarism and of sufficient grammatical clarity to be examined. To the best of my knowledge, the research and writing are those of the candidate except as acknowledged in the Author Attribution Statement. I confirm that the investigations were conducted in accord with the ethics policies and integrity standards of Nanyang Technological University and that the research data presented honestly and without prejudice.

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Empowering Low-Power Wide Area Networks in Urban Settings

Cited by 193 publications

References 29 publications

Joint range extension and localization for low‐power wide‐area network

Joint range extension and localization for low‐power wide‐area network

Challenge

Experience of LoRa low power wide area network

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