Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Mittag, Jens; Hartenstein, Hannes

doi:10.1109/itst.2012.6425293

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…The findings and results of existing works evaluation contained in Table V [64,66]. The review also shows that WAVE-based MAC protocol performs poorly in multiple access coordination as channel load approaches the maximum channel capacity [67].…”

Section: Congestion Control Techniques In Inter-vehicle Communicationmentioning

confidence: 99%

Advances in vehicular ad-hoc networks (VANETs): Challenges and road-map for future development

Eze

Zhang

Liu

et al. 2016

Int. J. Autom. Comput.

134

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Recent advances in wireless communication technologies and auto-mobile industry have triggered a significant research interest in the field of VANETs over the past few years. Vehicular Network consists of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications supported by wireless access technologies such as IEEE 802.11p. This innovation in wireless communication has been envisaged to improve road safety and motor traffic efficiency in near future through the development of Intelligent Transport Systems (ITS). Hence, government, auto-mobile industries and academia are heavily partnering through several ongoing research projects to establish standards for VANETs. The typical set of VANET application areas, such as vehicle collision warning and traffic information dissemination have made VANET an interesting field of mobile wireless communication. This paper provides an overview on current research state, challenges, potentials of VANETs as well the ways forward to achieving the long awaited ITS.Keywords: Vehicular communication, V2V, V2I, ITS, IEEE 802.11p, WAVE, IEEE 1609. IntroductionRoad accidents has been on an alarming increase despite the introduction of several innovative in-vehicle safety-oriented devices such as anti-locking braking system (ABS), seatbelts, airbags, rear-view cameras, electronic stability control (ESC). Several studies have maintained that 60% of the accidents that occur on motorways could be avoided if warning messages were provided to the drivers just few seconds prior to moment of crash [1] [2].The possibility of direct exchange of kinematic data between vehicles over an ad-hoc network environment called a vehicular ad-hoc network (VANET) has been widely perceived by governments, car manufacturing industries and academia as a promising concept for future realization of intelligent transportation system (ITS) thereby achieving safety and efficiency in our nearly overcrowded motorways. The VANET is a sub-class of MANET where the mobile nodes are vehicles. When compared with Mobile Ad-Hoc Network (MANET) and other cellular systems, inter-vehicle communication (IVC) has four major advantages: broad coverage area, relatively low latency due to direct wireless communication, little or no power issue as well as no service fees.In the recent years, car manufacturing industries, academia and government agencies have started putting much joint efforts together towards realizing the concept of vehicular communications in wide scale. Some frameworks are already worked out with the first landmark of standardization processes made by US Federal Communications Communication (FCC) [15] adopted an amendment of the legacy IEEE wireless LAN standard done by an IEEE Task Group (TG). The amendment is denoted by IEEE 802.11p as the platform for Wireless Access in Vehicular Environment (WAVE) which will be used to enable wireless communications between moving vehicles within a coverage distance of 1000m in a free space (i.e. highway scenario) and 300m in non-free space (i....

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Section: Congestion Control Techniques In Inter-vehicle Communicationmentioning

confidence: 99%

Advances in vehicular ad-hoc networks (VANETs): Challenges and road-map for future development

Eze

Zhang

Liu

et al. 2016

Int. J. Autom. Comput.

134

View full text Add to dashboard Cite

show abstract

“…Dai and Yamao proposed a probability analysis method that can predict packet delivery ratio for a multihop linear topology under fading environment, and they analyzed the impact of hidden terminal caused intraflow interference and compared two carrier sensing thresholds (−81 dBm and −85 dBm) [19]. Mittag and Hartenstein simulated V2V networks and they concluded that fading had only a slight impact on the effectiveness of CSMA [20]. Schumacher and Tchouankem showed that the severity of fading substantially influenced packet delivery based on their collected empirical data of highway traffic [21].…”

Section: Literature Reviewmentioning

confidence: 99%

On Carrier Sensing Accuracy and Range Scaling Laws in Nakagami Fading Channels

Wang

Chen

Zhang

et al. 2017

Wireless Communications and Mobile Computing

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We make a detailed study on carrier sensing of 802.11 in Nakagami fading channels. We prove that to maximize sensing accuracy, the optimal channel accessing probability is solely determined by the path-loss SIR (Signal to Interference Ratio). We define failinterference range and busy -carrier sensing range for fading channels and prove that their scaling laws in Nakagami fading channels are similar to those in the static channel. The newly derived theoretical results show a unified property between the static and fading channels. By extensive simulations, we reveal that fading depresses the probability of a dominating transmission state, and therefore it can mitigate severe hidden and exposed terminal problems, but fading harms the average sensing accuracy for an optimally adjusted carrier sensing threshold.

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Impact of CCA threshold, contention window, and transmit rate on VANET simulations

Fuxjager

Rührup

Smely

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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Is CSMA able to coordinate multiple access in vehicular radio channels effectively?

Cited by 3 publications

References 12 publications

Advances in vehicular ad-hoc networks (VANETs): Challenges and road-map for future development

Advances in vehicular ad-hoc networks (VANETs): Challenges and road-map for future development

On Carrier Sensing Accuracy and Range Scaling Laws in Nakagami Fading Channels

Impact of CCA threshold, contention window, and transmit rate on VANET simulations

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