Graduate School and Research Center in Digital Sciences

Random transmit jitter against correlated packet collisions in vehicular safety communications

Kloiber, Bernhard; Härri, Jérôme; de Ponte Müller, Fabian; Sand, Stephan

WIVEC 2014, 6th Symposium on Wireless Vehicular Communications, collocated with the 80th IEEE Vehicular Technology Conference (VTC 2014-Fall), 14-15 September 2014, Vancouver, Canada

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, which increase the delay between consecutive awareness updates from a certain vehicle. 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 for making 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.

Document Doi Bibtex

Title:Random transmit jitter against correlated packet collisions in vehicular safety communications
Department:Communication systems
Eurecom ref:4343
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Bibtex: @inproceedings{EURECOM+4343, doi = {}, year = {2014}, title = {{R}andom transmit jitter against correlated packet collisions in vehicular safety communications}, author = {{K}loiber, {B}ernhard and {H}{\"a}rri, {J}{\'e}r{\^o}me and de {P}onte {M}{\"u}ller, {F}abian and {S}and, {S}tephan}, booktitle = {{WIVEC} 2014, 6th {S}ymposium on {W}ireless {V}ehicular {C}ommunications, collocated with the 80th {IEEE} {V}ehicular {T}echnology {C}onference ({VTC} 2014-{F}all), 14-15 {S}eptember 2014, {V}ancouver, {C}anada}, address = {{V}ancouver, {CANADA}}, month = {09}, url = {} }
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