Publicação
Trading hardware with medium reservation to tackle scalability in low-cost, single-channel LoRa networks
| Resumo: | 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. |
|---|---|
| Autores principais: | Figueiredo, Alexandre |
| Outros Autores: | Luís, Miguel; ZÚQUETE, ANDRÉ |
| Assunto: | LoRa networks Medium access control Multiple-gateway networks Performance evaluation |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Instituto Politécnico de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório Científico do Instituto Politécnico de Lisboa |
| Resumo: | 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. |
|---|