Literature Database Entry


M.J. Booysen and G.J. van Rooyen, "The Impact of TDMA Frame Size on Latency in a Neighbor-Aware VANET MAC," Proceedings of 8th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing (IMIS 2014), July 2014, pp. 291-296.


Despite various proposed Medium Access Control (MAC) approaches, efficient medium access in VANET remains a significant challenge for the broadcast of safety messages. A key contributing factor, especially with the high node mobility apparent in VANET, is the hidden terminal problem. Since the hidden terminal problem is fundamentally a problem of lack of awareness, increased neighbor awareness at the MAC layer has been suggested as a possible solution. An increased awareness of neighboring nodes' slot allocation requires an increased number of TDMA slots. In this paper we evaluate the impact of TDMA frame size in a neighbor-aware MAC. An analytical model is developed to support the simulation results, based on a Markovian multi-server queue. The results show that the end-to-end latency is mostly affected by the TDMA frame cycle time when supply of slots outstrips demand. However, when slots become scarce, latency is adversely affected by times spent waiting for access to available slots.

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M.J. Booysen
G.J. van Rooyen

BibTeX reference

    author = {Booysen, M.J. and van Rooyen, G.J.},
    title = {{The Impact of TDMA Frame Size on Latency in a Neighbor-Aware VANET MAC}},
    booktitle = {8th International Conference on Innovative Mobile and Internet Services in Ubiquitous Computing (IMIS 2014)},
    pages = {291-296},
    keywords = {Markov processes;queueing theory;time division multiple access;vehicular ad hoc networks;MAC layer;Markovian multiserver queue;TDMA frame cycle time;TDMA frame size;TDMA slots;analytical model;end-to-end latency;hidden terminal problem;high-node mobility;increased neighbor awareness;medium access control approach;neighbor-aware VANET MAC;neighboring node slot allocation;safety message broadcasting;Receivers;Resource management;Servers;Throughput;Time division multiple access;Vehicles;Vehicular ad hoc networks;Medium Access Control (MAC);Neighbor awareness;Vehicular Ad-hoc NETwork (VANET)},
    year = {2014},
    month = {July},
    publisher = {IEEE},
    doi = {10.1109/IMIS.2014.37},

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