A survey and qualitative analysis of mac protocols for vehicular ad hoc networks

Menouar, Hamid; Filali, Fethi; Lenardi, Massimiliano

doi:10.1109/wc-m.2006.250355

Cited by 155 publications

(59 citation statements)

References 8 publications

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“…In VANETs, the nodes communicate in a similar way, but with high speed and different mobility characteristics which lead to frequent network topology changes. On the other hand, several characteristics of the vehicular networks can be used as advantages [1]. For example, in VANETs, vehicles move within specific road directions, and the importance of transmission power and message storage space constraints is not limited.…”

Section: Vehicular Communication Networkmentioning

confidence: 99%

“…Historically, ALOHA [1] is the base of random access protocols. The idea of ALOHA is basically that nodes send whenever they have packets to transmit.…”

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

“…The idea of ALOHA is basically that nodes send whenever they have packets to transmit. Based on ALOHA, slotted ALOHA (S-ALOHA) [1] provides a better medium access mechanism by dividing the time into slots, and a node only transmits at the beginning of a time slot. While ALOHA and S-ALOHA allow nodes to access the medium whenever they have packets to send, carrier sense multiple access (CSMA) [1] protocols allow a node to send only if the medium is not busy.…”

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

“…Based on ALOHA, slotted ALOHA (S-ALOHA) [1] provides a better medium access mechanism by dividing the time into slots, and a node only transmits at the beginning of a time slot. While ALOHA and S-ALOHA allow nodes to access the medium whenever they have packets to send, carrier sense multiple access (CSMA) [1] protocols allow a node to send only if the medium is not busy. Thus, the node checks the status of the channel before transmitting, and if the channel is busy, it backs off for a random amount of time; otherwise, it transmits.…”

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

“…Thus, the node checks the status of the channel before transmitting, and if the channel is busy, it backs off for a random amount of time; otherwise, it transmits. CSMA with collision detection (CSMA/CD) [1] and CSMA with collision avoidance (CSMA/CA) [1] are both inherited from the original CSMA protocol. However, the latter is the one that is applicable in wireless networks.…”

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

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Mobility impact in IEEE 802.11p infrastructureless vehicular networks

2012

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Vehicular ad hoc networks (VANETs) are an extreme case of mobile ad hoc networks (MANETs). High speed and frequent network topology changes are the main characteristics of vehicular networks. These characteristics lead to special issues and challenges in the network design, especially at the medium access control (MAC) layer. Due to high speed of nodes and their frequent disconnections, it is difficult to design a MAC scheme in VANETs that satisfies the quality-of-service requirements in all networking scenarios.In this thesis, we provide a comprehensive evaluation of the mobility impact on the IEEE 802.11p MAC performance. The study evaluates basic performance metrics such as packet delivery ratio, throughput, and delay, as well as the impact of mobility factors. The study also presents a relation between the mobility factors and the respective medium access behavior. Moreover, a new unfairness problem according to node relative speed is identified for both broadcast and unicast scenarios. To achieve better performance, we propose two dynamic contention window mechanisms to alleviate network performance degradation due to high mobility. Extensive simulation results show the significant impact of mobility on the IEEE 802.11p MAC performance, an identification of a new unfairness problem in the vehicle-to-vehicle (V2V) communications, and the effectiveness of the proposed MAC schemes.iii Acknowledgements I would like to express my deepest appreciation and gratitude to my supervisor Professor Weihua Zhuang for her guidance, support, and share of knowledge. Professor Zhuang can be considered as a role model for the professional academic supervisor. She gave me the opportunity to choose the topic of my Master's research, and provided me with invaluable suggestions and advice. She always inspired me when discussing research problems. In addition to her solid knowledge that enriched my research, she was always available, professional, helpful, and extremely nice. Her extraordinary commitment to the excellence of research made the opportunity to work with her a true reward of my Master's research.

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Section: Vehicular Communication Networkmentioning

confidence: 99%

“…Historically, ALOHA [1] is the base of random access protocols. The idea of ALOHA is basically that nodes send whenever they have packets to transmit.…”

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

Section: Mac Protocols For Vehicular Ad Hoc Networkmentioning

confidence: 99%

See 3 more Smart Citations

Mobility impact in IEEE 802.11p infrastructureless vehicular networks

2012

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Physical Communication Technologies

Kosch

Schroth

Strassberger

et al. 2012

Automotive Internetworking

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Colored scheduling scheme for fast and reliable beacon safety messages broadcast in vehicular ad‐hoc networks

Benaidja

2022

Int J Communication

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Summary The beacon transmission method in vehicular networks has to consider the mobility feature of vehicles and use the wireless channel more efficiently in order to broadcast safety‐related beacons with high reliability while respecting strict deadlines. The time division multiple access (TDMA) scheme has been proposed to improve the effectiveness of the IEEE 802.11p CSMA MAC protocol, but it is challenged with access and merging collisions caused by inefficient strategies in allocating time slots and mobile hidden terminal problems. In this paper, we propose colored velocity‐based TDMA (CVTDMA), an original colored scheduling scheme for the broadcast of safety beacons on the control channel. Based on vehicles speed and colors that it assigns to time slots according to their occupation statuses, it mitigates the mobility effect and maximizes the reuse of slots while avoiding collisions. The simulation results show that our protocol uses the wireless channel much more effectively than the default one defined in IEEE 802.11p.

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A survey and qualitative analysis of mac protocols for vehicular ad hoc networks

Cited by 155 publications

References 8 publications

Mobility impact in IEEE 802.11p infrastructureless vehicular networks

Mobility impact in IEEE 802.11p infrastructureless vehicular networks

Physical Communication Technologies

Colored scheduling scheme for fast and reliable beacon safety messages broadcast in vehicular ad‐hoc networks

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