Name
Abstract | ||
|---|---|---|
Unmanned Aerial Vehicles (UAVs) can be a powerful tool for live (interactive) remote inspection of large-scale structures or areas of interest. Instead of manual, local, and labor-intensive inspections, we envision human operators working together with networks of semi-autonomous UAVs. The current state-of-the-art for low-delay high-throughput inter-vehicle networking relies on Time-Division Multiple Access (TDMA) techniques that require accurate synchronization among all network nodes. In this paper, we propose a delay-tolerant synchronization approach that converges to the correct order of the TDMA slots implemented over COTS WiFi in a fully-distributed way and without resorting to a global clock. This highly flexible solution allows building an ad-hoc aerial network based on a backbone of relaying UAVs. We show several alternatives to achieve this synchronization in a concrete aerial network and compare them in terms of slots' overlap, throughput, and packet delivery. The results show that these alternatives lead to trade-offs in the referenced metrics. The results also provide insight into the delays caused by buffering in the protocol stack and especially in the WiFi interface. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.3390/s18124497 | SENSORS |
Keywords | Field | DocType |
multi-hop,network,synchronization,TDMA,WiFi | Synchronization,Electronic engineering,Engineering,Time division multiple access | Journal |
Volume | Issue | ISSN |
18 | 12.0 | 1424-8220 |
Citations | PageRank | References |
1 | 0.35 | 12 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Luis Ramos Pinto | 1 | 5 | 2.46 |
| Luís Almeida | 2 | 212 | 16.20 |