Publication
A Robust Approach to TDMA Synchronization in Aerial Networks
| dc.contributor.author | Pinto, Luis | |
| dc.contributor.author | Almeida, Luis | |
| dc.date.accessioned | 2019-06-21T10:09:39Z | |
| dc.date.available | 2019-06-21T10:09:39Z | |
| dc.date.issued | 2018 | |
| dc.description.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. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.doi | 10.3390/s18124497 | pt_PT |
| dc.identifier.issn | 1424-8220 | |
| dc.identifier.uri | http://hdl.handle.net/10400.22/14068 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | MDPI | pt_PT |
| dc.relation.ispartofseries | ;4497 | |
| dc.relation.publisherversion | https://www.mdpi.com/1424-8220/18/12/4497 | pt_PT |
| dc.subject | Multi-hop | pt_PT |
| dc.subject | Network | pt_PT |
| dc.subject | Synchronization | pt_PT |
| dc.subject | TDMA | pt_PT |
| dc.subject | WiFi | pt_PT |
| dc.title | A Robust Approach to TDMA Synchronization in Aerial Networks | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 12 | pt_PT |
| oaire.citation.title | Sensors | pt_PT |
| oaire.citation.volume | 18 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |