A cooperative V2X MAC protocol for vehicular networks

El-Gawad, Mohamed A. Abd; El-Sharief, Mahmoud A.; Kim, HyungWon

doi:10.1186/s13638-019-1382-8

Cited by 10 publications

(11 citation statements)

References 18 publications

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“…Many alternative MAC protocols have been proposed to improve the performance of standard MAC protocol [16][17][18][19][20][21][22][23][24][25][26][27][28]. The authors of [16] proposed a multichannel TDMA MAC protocol called VeMAC.…”

Section: Related Workmentioning

confidence: 99%

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Highly Reliable MAC Protocol Based on Associative Acknowledgement for Vehicular Network

Urmonov

Kim

2021

Electronics

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IEEE 1609/802.11p standard obligates each vehicle to broadcast a periodic basic safety message (BSM). The BSM message comprises a positional and kinematic information of a transmitting vehicle. It also contains emergency information that is to be delivered to all the target receivers. In broadcast communication, however, existing carrier sense multiple access (CSMA) medium access control (MAC) protocol cannot guarantee a high reliability as it suffers from two chronic problems, namely, access collision and hidden terminal interference. To resolve these problems of CSMA MAC, we propose a novel enhancement algorithm called a neighbor association-based MAC (NA-MAC) protocol. NA-MAC utilizes a time division multiple access (TDMA) to distribute channel resource into short time-intervals called slots. Each slot is further divided into three parts to conduct channel sensing, slot acquisition, and data transmission. To avoid a duplicate slot allocation among multiple vehicles, NA-MAC introduces a three-way handshake process during slot acquisition. Our simulation results revealed that NA-MAC improved packet reception ratio (PRR) by 19% and successful transmission by 30% over the reference protocols. In addition, NA-MAC reduced the packet collisions by a factor of 4. Using the real on-board units (OBUs), we conducted an experiment where our protocol outperformed in terms of PRR and average transmission interval by 82% and 49%, respectively.

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Section: Related Workmentioning

confidence: 99%

“…Another promising algorithm is presented in [22], where the authors introduced hybrid cooperative MAC (HCMAC), which supports the concept of VeMAC by solving its critical limitations. The HCMAC combines a channelization feature of TDMA with random-access mechanism of CSMA to create a hybrid MAC.…”

Section: Related Workmentioning

confidence: 99%

Highly Reliable MAC Protocol Based on Associative Acknowledgement for Vehicular Network

Urmonov

Kim

2021

Electronics

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“…The optimization problem for determining the maximum spatially-averaged throughput could be formulated as in (6).…”

Section: Throughput Optimizationmentioning

confidence: 99%

“…These issues motivate the research community to propose alternative channel access protocols. Some of these proposals utilize the time division multiple access (TDMA) via allocating different time slots to neighboring vehicles and, hence, reducing collision possibilities [5,6]. Other research work aimed at enhancing the performance of IEEE802.11p by reducing the channel interference through controlling some transmission parameters (e.g., transmission interval, transmission power, and transmission rate) [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Network-Wide Throughput Optimization for Highway Vehicle-To-Vehicle Communications

El-Gawad

ElSawy

Sakr³

et al. 2019

Electronics

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This letter analyzes the meta-distribution of the transmission success probability (TSP) for vehicular networks based on a one-dimensional Poisson point process (PPP). We also propose a method to maximize the throughput across the vehicular network. Compared to the conventional spatial average performance assessment, the meta-distribution reveals the fraction of vehicles that operate at a target success rate of transmission across the highway. To this end, we propose a per-vehicle rate selection scheme to keep a target quality of service (QoS) level for all vehicles. The results reveal that operating at the spatially-averaged maximum throughput may lead to excessive variation in the performance of individual vehicles. However, with the proposed meta-distribution-aware rate selection scheme, the throughput variation among the vehicles can be significantly reduced (e.g., up to a 60 % reduction).

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“…Therefore, on top of the physical layer of IEEE802.11p, many researchers have proposed other MAC protocols that offer a reliable broadcast service and solve the problem of hidden nodes. Some of these MAC protocols employ time division multiple access (TDMA) [5]- [8], and others introduce a hybrid mechanism by combining CSMA and TDMA [8]. Recently, 3GPP released C-V2X (Rel.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Experimental Analysis of Channel Access Protocols in Vehicular Networks

2019

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The deployment of vehicular networks is considered crucial for traffic safety of future vehicles. Thus, researchers are making extensive efforts to improve the performance of the IEEE802.11p standard. Many researchers have proposed various MAC protocols to mitigate the chronicle problems of the IEEE802.11p -for example, the unreliable transmission of safety-related messages. However, most of the previous evaluations of the reliability problem have been done either via mathematical analysis or simulations. In this paper, we conducted actual experiments and analyzed the performance of two MAC protocols: IEEE802.11p and HCMAC, a hybrid MAC protocol recently reported. Using commercial V2X devices, we measured the performance in terms of received signal strength indicator (RSSI), packet delivery ratio (PDR), and packet inter-reception time (PIR). We tested the connectivity performance under various mobility scenarios. In addition, this paper investigates the impact of collisions on the overall performance. For a range of collision levels, an extensive set of experiments demonstrate that HCMAC outperforms the MAC of IEEE802.11p in terms of PDR and PIR up to 88% and 47%, respectively. INDEX TERMS VANET, IEEE802.11p, HCMAC, Cohda wireless, field testing. 1 DSRC standard defines such a beacon message as a Basic Safety Message (BSM). Hereafter, the terms ''beacon'' and ''BSM'' are interchangeably used.

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A cooperative V2X MAC protocol for vehicular networks

Cited by 10 publications

References 18 publications

Highly Reliable MAC Protocol Based on Associative Acknowledgement for Vehicular Network

Highly Reliable MAC Protocol Based on Associative Acknowledgement for Vehicular Network

Network-Wide Throughput Optimization for Highway Vehicle-To-Vehicle Communications

A Comparative Experimental Analysis of Channel Access Protocols in Vehicular Networks

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