Measuring ETSI ITS-G5 Communications Latencies with Commercial off-the-shelf Wi-Fi Hardware

Grose P, Andrich C, Kotterman W, Ihlow A, Galdo GD (2018)

Publication Type: Conference contribution

Publication year: 2018

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2018 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2018

Event location: Munich, DEU

ISBN: 9781538617250

DOI: 10.1109/ICMIM.2018.8443355

Abstract

We transmit ETSI ITS-G5 standard compliant packets using commercial off-the-shelf Wi-Fi cards based on the Atheros 9k chipset under Linux operating system and measure latencies within the transmission chain by a ping-pong scheme. While preparing, enqueing, and handing over a packet to the kernel via send() takes about 10 microseconds, a reception delay of about 500 microseconds is introduced, before the dequeing and return of recv() takes about another 10 microseconds. The 500 microsecond delay is caused by RX interrupt mitigation in the ath9k device driver and can be adjusted by a kernel patch.

Involved external institutions

Technische Universität Ilmenau DE Germany (DE) Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE)

How to cite

APA:

Grose, P., Andrich, C., Kotterman, W., Ihlow, A., & Galdo, G.D. (2018). Measuring ETSI ITS-G5 Communications Latencies with Commercial off-the-shelf Wi-Fi Hardware. In 2018 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2018. Munich, DEU: Institute of Electrical and Electronics Engineers Inc..

MLA:

Grose, Peter, et al. "Measuring ETSI ITS-G5 Communications Latencies with Commercial off-the-shelf Wi-Fi Hardware." Proceedings of the 2018 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2018, Munich, DEU Institute of Electrical and Electronics Engineers Inc., 2018.

BibTeX: Download