Impact of Neighbor Awareness at the MAC Layer in a Vehicular Ad-hoc NETwork (VANET)

dc.contributor.authorBooysen, Marthinus J.
dc.contributor.authorZeadally, Sherali
dc.contributor.authorVan Rooyen, Gert-Jan
dc.date.accessioned2014-01-06T08:53:08Z
dc.date.available2014-01-06T08:53:08Z
dc.date.issued2013-06
dc.descriptionThe original publication is available at http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6698235&isnumber=6698215en_ZA
dc.description.abstractDespite various proposed Medium Access Control (MAC) approaches, efficient medium access in VANET remains a significant challenge, especially for the broadcast of safety messages. A key contributing factor to packet loss is the hidden terminal problem, which is exacerbated by the high node mobility apparent in VANET. Since the hidden terminal problem is fundamentally a problem of lack of awareness, this work evaluates the effects of increased neighbor awareness at the MAC layer. An increased awareness of neighboring nodes’ slot allocation in a TDMA-based MAC, directly impacts on the number of available slots. Therefore, the effects of TDMA frame size is also evaluated for different awareness ranges. To support the analysis, a TDMA-based MAC with configurable neighbor awareness and configurable TDMA frame size is introduced. The impact is assessed using the packet delivery ratio, receiver throughput, and end-to-end latency. The results show packet delivery ratio and receiver throughput to increase for increased awareness ranges, up to an optimal of 2 hops, after which performance worsens. An increase in TDMA frame size leads to an increase in packet delivery ratio for small awareness ranges, and an oscillating increase for large awareness ranges. The receiver throughput also initially increases for an increased TDMA frame size, but reaches an optimum,also at 2 hops.en_ZA
dc.description.versionPost-printen_ZA
dc.identifier.citationBooysen, M. J., Zeadally, S. & Van Rooyen, G-J. 2013. Impact of neighbor awareness at the MAC layer in a Vehicular Ad-Hoc Network (VANET). Wireless Vehicular Communications (WiVeC), IEEE 5th International Symposium on , vol., no., pp.1,5, 2-3 June 2013 doi: 10.1109/wivec.2013.6698235en_ZA
dc.identifier.otherdoi:10.1109/wivec.2013.6698235
dc.identifier.urihttp://hdl.handle.net/10019.1/85905
dc.language.isoen_ZAen_ZA
dc.publisherIEEE -- Institute of Electrical and Electronics Engineersen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectVehicular ad hoc networks (Computer networks)en_ZA
dc.subjectVANETsen_ZA
dc.subjectIntelligent transportation systemsen_ZA
dc.subjectTime division multiple accessen_ZA
dc.titleImpact of Neighbor Awareness at the MAC Layer in a Vehicular Ad-hoc NETwork (VANET)en_ZA
dc.typeArticleen_ZA
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