In this work, we focus on the well-known hiddenterminal problem applied to the IEEE 802.11p context, from aninfrastructure-centric point of view (I2V). The problem occursin scenarios where two nodes are out of each other’s rangewhile being independently able to communicate with a thirdthat, intuitively speaking, is positioned in the middle of theformer two. If the two nodes transmit to the third at the samefrequency and at the same time, though not exactly the samesignal, the third would be unable to identify the two sourcesignals and, therefore, would suffer from interference. Althoughthe occurrence of this problem may be unlikely in I2V practice,certain applications, such as road safety, require the problemto be addressed anyhow. This article shows the outcomes offield trials conceived to experience first-hand the occurrence ofthe issue in IEEE 802.11p networks, experiment with differentinterference management techniques, and design or select theoptimal approach to minimize interference. Results unequivocallyattest that, in this context, an ad-hoc Time-Division MultipleAccess (TDMA) approach provides the best guarantees in anycondition. It is also shown how, on the other hand, the commonmethod of using the Request To Send/Clear To Send (RTS/CTS)protocol to prevent the issue in unicast scenarios may result ina disappointing performance, due to the nature of safety-relatedI2V communications that employ short packets to be deliveredwith minimum latency.

IEEE 802.11p field trials on interference minimization for safety-related V2X applications / Klapez, M; Grazia, C. A.; Casoni, M. - 2019-:(2019), pp. 235-240. (Intervento presentato al convegno 15th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2019 tenutosi a Barcelona (spain) nel 21-23 October 2019) [10.1109/WiMOB.2019.8923276].

IEEE 802.11p field trials on interference minimization for safety-related V2X applications

Klapez M;Grazia C. A.;Casoni M
2019

Abstract

In this work, we focus on the well-known hiddenterminal problem applied to the IEEE 802.11p context, from aninfrastructure-centric point of view (I2V). The problem occursin scenarios where two nodes are out of each other’s rangewhile being independently able to communicate with a thirdthat, intuitively speaking, is positioned in the middle of theformer two. If the two nodes transmit to the third at the samefrequency and at the same time, though not exactly the samesignal, the third would be unable to identify the two sourcesignals and, therefore, would suffer from interference. Althoughthe occurrence of this problem may be unlikely in I2V practice,certain applications, such as road safety, require the problemto be addressed anyhow. This article shows the outcomes offield trials conceived to experience first-hand the occurrence ofthe issue in IEEE 802.11p networks, experiment with differentinterference management techniques, and design or select theoptimal approach to minimize interference. Results unequivocallyattest that, in this context, an ad-hoc Time-Division MultipleAccess (TDMA) approach provides the best guarantees in anycondition. It is also shown how, on the other hand, the commonmethod of using the Request To Send/Clear To Send (RTS/CTS)protocol to prevent the issue in unicast scenarios may result ina disappointing performance, due to the nature of safety-relatedI2V communications that employ short packets to be deliveredwith minimum latency.
2019
15th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2019
Barcelona (spain)
21-23 October 2019
2019-
235
240
Klapez, M; Grazia, C. A.; Casoni, M
IEEE 802.11p field trials on interference minimization for safety-related V2X applications / Klapez, M; Grazia, C. A.; Casoni, M. - 2019-:(2019), pp. 235-240. (Intervento presentato al convegno 15th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2019 tenutosi a Barcelona (spain) nel 21-23 October 2019) [10.1109/WiMOB.2019.8923276].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1190042
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