Zuquete 2021a
From IEETA
Article
| Title | Trading hardware with medium reservation to tackle scalability in low-cost, single-channel LoRa networks |
|---|---|
| Author | Alexandre Figueiredo, Miguel Luís, André Zúquete |
| Journal | Internet Technology Letters |
| Volume | |
| Number | |
| Pages | e340 |
| Month | December |
| Year | 2021 |
| DOI | 10.1002/itl2.340 |
| Group | Information Systems and Processing |
| Group (before 2015) | Information Systems and Telematics Laboratory |
| Indexed by ISI | Not known yet |
LoRa is actually one of the most popular LPWAN technologies for IoT applications, due to its low-power and long-range transmissions. A single low-cost, single-channel LoRa Gateway is able to cover a large number of End-Devices spread over a wide area. Gateway diversity is traditionally used to reduce the impact of packet losses: adding more Gateways can increase both delivery ratio and goodput, even when using a pure-ALOHA access policy. However, such solution can be cost-expensive and the adoption of control-based medium access strategies, without violating the duty-cycle constraints, can be, in some situations, a better option. In this letter, we compare the effectiveness of Gateway diversity against a medium access protocol with channel reservation. We evaluate if and in which scenarios, relatively to delivery ratio and goodput, in a single communication channel, it is better to add more Gateways to the system (hardware) or adopt a reservation protocol (software) for tackling the scaling-up of the number of End-Devices.