bai-vanet-application_characteristics

bai-vanet-application_characteristics - Towards...

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Towards Characterizing and Classifying Communication-based Automotive Applications from a Wireless Networking Perspective Fan Bai, Hariharan Krishnan, Varsha Sadekar Electrical & Controls Integration Laboratory General Motors Research Center { fan.bai, hariharan.krishnan, varsha.k.sadekar } @gm.com Gavin Holland, Tamer ElBatt HRL Laboratories, LLC { telbatt,gholland } @hrl.com Abstract Together, the Dedicated Short Range Communication (DSRC) and Vehicular Ad Hoc Network (VANET) technologies provide a unique opportunity to develop various types of communication-based automotive applications. To date, many applications have been identified by the automotive community. Given the large number and diverse nature of these applications, it is advantageous to develop a systematic classification methodology to facilitate future DSRC and VANET research. Toward this objective, we present a study that goes through two major steps: characterization and classification. First, we focus on a rich set of representative applications and characterize them with respect to plausible application- and networking-related attributes. The characterization process not only strengthens our understanding of the applications but also sets the stage for the classification step since it reveals numerous application commonalities. Thus, we have categorized the given applications into seven generic classes, with the consideration of balancing the trade-off between exploiting as many application similarities as possible while preserving their salient differences. This is of paramount importance to facilitate performance analysis for newly designed protocols. Finally, we have identified key performance metrics for each class of applications, which, we hope, could bridge the gap between the automotive and wireless networking communities. Accordingly, the proposed classes are envisioned to play a dual-role: to facilitate application simulation and performance evaluation, and to guide DSRC and VANET protocol research and development. I. I NTRODUCTION Traffic accidents and highway congestion are a serious problem world-wide [1] [3]. To address this challenge, safety applications using expensive sensors, radars, cameras and other state-of-the-art technologies are currently integrated into vehicles to improve safety and convenience. Recently, however, communication-based safety applications have attracted more attention from industry and governments in the United States, Europe, and Japan because of their potential to lower manufacturing costs [2] [27] [32] [33] [34]. In addition to safety applications, wireless communication can also be shared by commercial and vehicular “infotainment” applications to, for instance, enhance the occupants’ driving experience. Thus, wireless communication can be used to not only enhance transportation safety [4] [5] [6] [7] and traffic efficiency [8], but also to create commercial opportunities to vehicle owners and automotive OEMs by providing infotainment applications [9] [10].
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