Shah, Syed Adeel Ali and Ahmed, Ejaz and Qureshi, Muhammad Ahsan and Jan, Sadeeq and Noor, Rafidah Md (2019) An effective back-off selection technique for reliable beacon reception in VANETs. International Journal of Communication Systems, 32 (13). e4019. ISSN 1074-5351, DOI https://doi.org/10.1002/dac.4019.
Full text not available from this repository.Abstract
In safety-critical scenarios, reliable reception of beacons transmitted by a subject vehicle is critical to avoid vehicle collision. According to the employed contention window sizes in IEEE 802.11p, beacons are transmitted with a small contention window size. As a result, multiple vehicles contend for the shared channel access by selecting the same back-off slot. This is a perfect recipe for synchronous collisions wherein reliable beacon delivery cannot be guaranteed for any vehicle. We consider the problem of selecting the back-off slots from the current contention window to provide reliable delivery of beacons transmitted by a subject vehicle to its neighbors. Given a safety scenario, we propose a Pseudo-Random Number Generator (PRNG)-inspired back-off selection (PBS) technique. The proposed technique works on the hypothesis that synchronous collisions of beacons transmitted by a subject vehicle can be reduced if all its neighbors select different back-off slots (ie, not the back-off slot selected by the subject vehicle). The discrete-event simulations demonstrate that PBS can increase the overall message reception from a subject vehicle, in comparison with the uniform random probability back-off selection in IEEE 802.11p. © 2019 John Wiley & Sons, Ltd.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | back-off selection; contention window; reliability; synchronous collisions; vehicular ad hoc networks |
| Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science |
| Divisions: | Faculty of Computer Science & Information Technology |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 20 Jan 2020 06:39 |
| Last Modified: | 20 Jan 2020 06:39 |
| URI: | http://eprints.um.edu.my/id/eprint/23487 |
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