MAC protocols with dynamic interval schemes for VANETs

Nguyễn, Vân Dung; Pham, Chuan; Oo, Thant Zin; Tran, Nguyen H.; Huh, Eui Nam; Hong, Choong Seon

doi:10.1016/j.vehcom.2018.11.003

Cited by 23 publications

(21 citation statements)

References 49 publications

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“…1,2 The independent transmission method transmits safety packets on specific intervals. 1,2 The independent transmission method transmits safety packets on specific intervals.…”

Section: Related Workmentioning

confidence: 99%

“…Based on this classification, various Markov models are used in different methods. 1,2 The advantages and disadvantages of existing multichannel MAC protocols are summarized in Table 2. Correspondingly, in these protocols, the CCHI is divided into two independent intervals: the safety transmission interval and WSA transmission interval.…”

Section: Related Workmentioning

confidence: 99%

“…We classified the existing adaptive MAC protocols into two groups based on their safety transmission method: either independent or simultaneous. 1,2 The independent transmission method transmits safety packets on specific intervals. In contrast, both safety and non-safety packets are transmitted on the same interval in the case of simultaneous transmission methods.…”

Section: Related Workmentioning

confidence: 99%

“…1 The main advantages of adaptive multichannel MAC protocols are that they improve the throughput, ensure safety packet transmission, and support the various QoS requirements. 1,2 The advantages and disadvantages of existing multichannel MAC protocols are summarized in Table 2.…”

Section: Related Workmentioning

confidence: 99%

“…To satisfy the requirements of both safety and nonsafety applications, the medium access control (MAC) protocol was designed to allow for diverse VANET applications. According to surveys, 1,2,5,6 MAC protocols are split up into three major approaches. First, if vehicles access the channel using the carrier sensing mechanism 7 to exchange their data, the MAC protocols used are called contention-based MAC protocols.…”

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confidence: 99%

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Performance analysis of adaptive MAC protocol in VANETs considering the potential impact on throughput and transmission delays

Nguyen

Khanh

Pham

et al. 2019

Int J Communication

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The existing adaptive multichannel medium access control (MAC) protocols in vehicular ad hoc networks can adjust themselves according to different vehicular traffic densities. These protocols can increase throughput and guarantee a bounded transmission delay for real-time safety applications. However, the optimized control channel interval is computed based on the maximum throughput while ignoring the strict safety packet transmission delay requirements. In this paper, we analyze the effects of the throughput and strict safety packet transmission delay with adaptive multichannel MAC protocols, such as connectivity-aware MAC (CA MAC), adaptive multi-priority distributed MAC (APDM), multi-priority supported p-persistent MAC (MP MAC), and variable control channel interval MAC (VCI) protocols. The performance and analysis results show that: (a) under a low data rate condition, CA MAC does not guarantee a strict safety packet transmission delay; (b) APDM not only satisfies the safety packet transmission requirement, but also provides the lowest safety packet transmission delay; (c) under a high data rate condition, we suggest APDM for use as an adaptive MAC protocol because it allows for high throughput for nonsafety packets and preserves low safety packet transmission delay; (d) under a low data rate condition with various data packet sizes, we suggest MP MAC for high throughput, which satisfies the safety packet transmission requirement; and (e) under low vehicle density and low data rate conditions, VCI can support high throughput. A balance between transmission delay and throughput must be considered to improve the optimal efficiency, reliability, and adaptability. KEYWORDSVANET, multi-channel MAC, throughput, transmission delay Int J Commun Syst. 2020;33:e4172.wileyonlinelibrary.com/journal/dac

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“…1,2 The independent transmission method transmits safety packets on specific intervals. 1,2 The independent transmission method transmits safety packets on specific intervals.…”

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%