An Efficient Channel Access Scheme for Vehicular Ad-hoc Networks
Hussain, S, Iqbal, M, Saeed, A, Raza, I, Raza, H, Ali, A, Bashir, A and Baig, A (2017). An Efficient Channel Access Scheme for Vehicular Ad-hoc Networks. Mobile Information Systems. 2 (4), pp. 1473-1477.
|Authors||Hussain, S, Iqbal, M, Saeed, A, Raza, I, Raza, H, Ali, A, Bashir, A and Baig, A|
Vehicular Ad-hoc Networks (VANETs) are getting more popularity due to the potential Intelligent Transport Systems (ITS) technology. It provides many efficient network services such as safety warnings (collision warning), entertainment (video and voice), maps based guidance, emergency information, etc. VANETs most commonly use Road Side Units (RSUs) and Vehicle-to-Vehicle (V2V) referred as Vehicle-to-Infrastructure (V2I) mode for data accessing. IEEE 802.11p standard which was originally designed for Wireless Local Area Networks (WLANs) is modified to address such type of communication. However, IEEE 802.11p uses Distributed Coordination Function (DCF) for communication between wireless nodes. Therefore, it does not perform well for high mobility networks such as VANETs. Moreover, in RSU mode timely provision of data/services under high density of vehicles is challenging. In this paper, we propose a RSU-based efficient channel access scheme for VANETs under high traffic and mobility. In the proposed scheme, the contention window is dynamically varied according to the times (deadlines) the vehicles are going to leave the RSU range. The vehicles with shorter time deadlines are served first and vice versa. Simulation are performed by using the Network Simulator (NS-3) v. 3.6. The simulation results show that the proposed scheme performs better in terms of throughput, backoff rate, RSU response time, and fairness.
|Keywords||0805 Distributed Computing; 0806 Information Systems; Information Systems|
|Journal||Mobile Information Systems|
|Journal citation||2 (4), pp. 1473-1477|
|18 May 2017|
|Publication process dates|
|Deposited||12 Jun 2017|
|Accepted||18 May 2017|
|Accepted author manuscript|
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