Stefan Joerer, Bastian Bloessl, Michele Segata, Christoph Sommer, Renato Lo Cigno and Falko Dressler, "Fairness Kills Safety: A Comparative Study for Intersection Assistance Applications," Proceedings of 25th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2014), Washington, D.C., September 2014, pp. 1442-1447.

### Abstract

We study the ability of Inter-Vehicle Communication (IVC) solutions to handle real-time requirements in safety scenarios using beaconing as a communication primitive. One of the envisioned safety applications is intersection assistance. The objective of such applications is to either warn the driver or even to act autonomously if other approaching vehicles endanger the vehicle. Fairness, combined with aggressive channel access for low-latency safety messages, has been one of the main research line according to which state of the art congestion control mechanisms have been developed. We show that these solutions are not able to sufficiently support intersection assistance applications. Specifically, we show that current approaches fail exactly due to their fairness postulation. We propose a new situation-aware solution to this fairness dilemma by allowing temporary exceptions for vehicles in dangerous situations. We show the applicability for two state of the art congestion control mechanisms, namely ETSI Transmit Rate Control (TRC) and Dynamic Beaconing (DynB). Our investigation also reveals important research objectives for future IVC protocols, namely how much reactivity and situation-awareness is needed in the highly dynamic environment of vehicular networks.

### Quick access

Original Version (at publishers web site)
Authors' Version (PDF on this web site)
BibTeX

### BibTeX reference

@inproceedings{joerer2014fairness,     address = {Washington, D.C.},     author = {Joerer, Stefan and Bloessl, Bastian and Segata, Michele and Sommer, Christoph and Lo Cigno, Renato and Dressler, Falko},     booktitle = {25th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2014)},     doi = {10.1109/PIMRC.2014.7136395},     month = {September},     pages = {1442-1447},     publisher = {IEEE},     title = {{Fairness Kills Safety: A Comparative Study for Intersection Assistance Applications}},     year = {2014},    }

Links to final or draft versions of papers are presented here to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted or distributed for commercial purposes without the explicit permission of the copyright holder.

The following applies to all papers listed above that have IEEE copyrights: Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

The following applies to all papers listed above that are in submission to IEEE conference/workshop proceeedings or journals: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessible.

The following applies to all papers listed above that have ACM copyrights: ACM COPYRIGHT NOTICE. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from Publications Dept., ACM, Inc., fax +1 (212) 869-0481, or permissions@acm.org.

The following applies to all SpringerLink papers listed above that have Springer Science+Business Media copyrights: The original publication is available at www.springerlink.com.