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Random Transmit Jitter Against Correlated Packet Collisions in Vehicular Safety Communications

Kloiber, Bernhard and Jérôme, Härri and De Ponte Müller, Fabian and Sand, Stephan (2014) Random Transmit Jitter Against Correlated Packet Collisions in Vehicular Safety Communications. In: Proceedings of 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall). 6th International Symposium on Wireless Vehicular Communications: WIVEC2014, 14.-17. Sept. 2014, Vancouver, Kanada. doi: 10.1109/WIVEC.2014.6953255. ISBN 978-1-4799-4449-1.

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In Vehicular Safety Communication (VSC) vehicles periodically broadcast so called Cooperative Awareness Messages (CAM) to make neighboring vehicles being aware of their current status like position, speed and heading. Such periodic transmissions on top of the Dedicated Short Range Communication (DSRC) technology can cause temporal correlated (recurring) collisions. Whereas VSC applications may support the loss of individual CAMs, the loss of several subsequent messages increases the delay between consecutive awareness updates from a certain vehicle, which in turn significantly lowers the applications reliability. In this paper we propose to add a controlled random jitter to the nominal CAM broadcast interval at the application/facilities layer. Thus, we aim to make temporal correlated packet collisions more uncorrelated in time and by implication significantly decrease the delay between consecutive CAM updates (update delay or inter-reception time). The benefit of our approach has been demonstrated by simulating a multi lane highway scenario at different traffic/data load conditions. By adding a random transmit jitter we were able to reduce the amount of correlated collisions by more than factor 10, and by consequence to improve the update delay performance by up to two orders of magnitude.

Item URL in elib:https://elib.dlr.de/89426/
Document Type:Conference or Workshop Item (Speech)
Title:Random Transmit Jitter Against Correlated Packet Collisions in Vehicular Safety Communications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
De Ponte Müller, FabianUNSPECIFIEDhttps://orcid.org/0000-0002-2215-2174UNSPECIFIED
Sand, StephanUNSPECIFIEDhttps://orcid.org/0000-0001-9502-5654UNSPECIFIED
Journal or Publication Title:Proceedings of 2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Random Transmit Jitter, Correlated Packet Collisions, DSRC, Vehicular Safety Communications
Event Title:6th International Symposium on Wireless Vehicular Communications: WIVEC2014
Event Location:Vancouver, Kanada
Event Type:international Conference
Event Dates:14.-17. Sept. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Fahrzeugintelligenz (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Kloiber, Bernhard
Deposited On:07 Oct 2014 10:25
Last Modified:21 Jul 2023 08:42

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