A modified 802.11-based MAC scheme to assure fair access for vehicle-to-roadside communications

Karamad, Ehsan; Ashtiani, Farid

doi:10.1016/j.comcom.2008.01.030

Cited by 60 publications

(74 citation statements)

References 4 publications

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“…The overall aim is to improve the throughput and fairness for all the users. The problem of unfairness due to vehicles having different velocities has been explained for a V2I scenario in [11,12] and for a V2V scenario in [22]. Authors of [11] present an analysis, in which the network that spans the coverage area of RSU is modeled as an M/G/1 queue.…”

Section: Related Workmentioning

confidence: 99%

“…The problem of unfairness due to vehicles having different velocities has been analyzed in [11,12] for the V2I communication scenario shown in Figure 1, in which vehicles try to get connected to intermittent and serial RSUs along the highway. Vehicles having different velocities have different resident times in the coverage area of an RSU.…”

Section: Cw Cwmentioning

confidence: 99%

“…Several attempts have been made to analyze and evaluate the performance of IEEE 802.11p standard for vehicular networks in terms of throughput and other related measures [11][12][13][14][15][16][17][18][19][20][21][22][23]. In [13,14], authors propose analytical models to evaluate the performance and the reliability of IEEE 802.11a-based V2V safety-related broadcast services in DSRC system on highway.…”

Section: Related Workmentioning

confidence: 99%

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Fairness Assurance through TXOP Tuning in IEEE 802.11p Vehicle-to-Infrastructure Networks for Drive-Thru Internet Applications

Harigovindan¹,

Babu²,

Jacob³

2013

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This paper addresses an unfairness problem that exists among vehicles of distinct velocities in IEEE 802.11p based vehicle-to-infrastructure (V2I) networks used for drive-thru Internet applications. The standard IEEE 802.11p does not take into account, the residence time of vehicles within the coverage of each road side unit (RSU), for granting channel access. Due to this, a vehicle moving with higher velocity has less chance to communicate with the RSU, as compared to vehicles with lower velocity, due to its shorter residence time in the coverage area of RSU. Accordingly, the data transfer performance of a higher velocity vehicle gets degraded significantly, as compared to that of the vehicle with lower velocity, resulting in unfairness among them. In this paper, our aim is to resolve this unfairness problem by assigning the transmission opportunity (TXOP) limits to vehicles according to their mean velocities. Using an analytical model, we prove that tuning TXOP limit proportional to mean velocity can ensure fairness among vehicles belonging to distinct classes of mean velocities, in the sense of equal chance of communicating with RSU. Analytical results are validated using extensive simulations.

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Section: Related Workmentioning

confidence: 99%

Section: Cw Cwmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

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Fairness Assurance through TXOP Tuning in IEEE 802.11p Vehicle-to-Infrastructure Networks for Drive-Thru Internet Applications

Harigovindan¹,

Babu²,

Jacob³

2013

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“…The fair access scheme allows a vehicle to change its minimum window adaptively to realize fair access. The performance of the fair access scheme is analyzed through constructing a model [1]. This protocol is proposed based on the DCF mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…To solve the V2I unfair access problem, Karamad and Ashtiani proposed a fair access scheme base on the distributed coordination function (DCF) mechanism [1]. The fair access scheme allows a vehicle to change its minimum window adaptively to realize fair access.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of the V2I fair access with a finite retry limit

Zhang

et al. 2018

J Wireless Com Network

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This paper evaluates the performance of the vehicle-to-infrastructure (V2I) fair access with a finite retry limit through constructing an analytical model. Firstly, the process of the distributed coordination function (DCF) mechanism with a finite retry limit is described through developing a 2-D Markov chain; based on the Markov chain, the transmission probability with the access parameters including the minimum window and the retry limit is derived. Then, considering the V2I unfair access problem, the relationship between the velocity and the transmission probability of a vehicle is derived. Based on the proposed model, given a finite retry limit, the minimum window of a vehicle can be determined according to its velocity. In the simulation, the proposed model is justified to be effective and the V2I fair access performance with a finite retry limit is evaluated through comparison.

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