Black-Burst-Based Multihop Broadcast Protocols for Vehicular Networks

Korkmaz, Gökhan; Ekici, Eylem; Özgüner, F.

doi:10.1109/tvt.2007.900493

Cited by 125 publications

(75 citation statements)

References 13 publications

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“…MAC-layer protocols, such as [23][24][25], focus on reducing interference to improve the use of the wireless medium. These protocols modify the broadcast mechanism of the underlying MAC protocol that a routing protocol operates on.…”

Section: Introductionmentioning

confidence: 99%

“…These protocols modify the broadcast mechanism of the underlying MAC protocol that a routing protocol operates on. While this eliminates the need to modify the networkinglayer protocol, these protocols have disadvantages (over a network-layer approach) such as relying on expensive repeaters [23], added delay due to sequential directional broadcast in intersections [24], or reduced spatial reuse of the wireless medium due to larger busy tone broadcast [25].…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Broadcast Technique for Vehicular Networks

Ho¹,

Ho²,

Hua³

et al. 2011

Journal of Information Processing Systems

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Abstract-Vehicular networks are a promising application of mobile ad hoc networks. In this paper, we introduce an efficient broadcast technique, called CB-S (Cell Broadcast for Streets), for vehicular networks with occlusions such as skyscrapers. In this environment, the road network is fragmented into cells such that nodes in a cell can communicate with any node within a two cell distance. Each mobile node is equipped with a GPS (Global Positioning System) unit and a map of the cells. The cell map has information about the cells including their identifier and the coordinates of the upper-right and lower-left corner of each cell. CB-S has the following desirable property. Broadcast of a message is performed by rebroadcasting the message from every other cell in the terrain. This characteristic allows CB-S to achieve an efficient performance. Our simulation results indicate that messages always reach all nodes in the wireless network. This perfect coverage is achieved with minimal overhead. That is, CB-S uses a low number of nodes to disseminate the data packets as quickly as probabilistically possible. This efficiency gives it the advantage of low delay. To show these benefits, we give simulations results to compare CB-S with four other broadcast techniques. In practice, CB-S can be used for information dissemination, or to reduce the high cost of destination discovery in routing protocols. By also specify the radius of affected zone, CB-S is also more efficient when broadcast to a subset of the nodes is desirable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Efficient Broadcast Technique for Vehicular Networks

Ho¹,

Ho²,

Hua³

et al. 2011

Journal of Information Processing Systems

View full text Add to dashboard Cite

show abstract

“…Hence, considering also the strict delay requirements of DSRC communications, single-hop communications would still be the best proposed for environments such as highways, etc [4]. Having said that, the quest for communication strategies in urban areas is currently limited to a diminutive number of case studies such as [9] which only consider intersections and entirely depend on the infrastructure. In [9], the authors propose a strategy to propagate event-driven safety messages along highways and through intersections.…”

Section: Introductionmentioning

confidence: 99%

“…Having said that, the quest for communication strategies in urban areas is currently limited to a diminutive number of case studies such as [9] which only consider intersections and entirely depend on the infrastructure. In [9], the authors propose a strategy to propagate event-driven safety messages along highways and through intersections. In that study, in order to reduce overhead, the furthest vehicle to the transmitter is assigned the role of packet forwarding.…”

Section: Introductionmentioning

confidence: 99%

A Universal Geocast Scheme for Vehicular Ad Hoc Networks

Nekoui

Pishro-Nik

2010

2010 7th IEEE Consumer Communications and Networking Conference

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Abstract-A universal communications scheme for Vehicular Ad hoc Networks (VANETs) is proposed. This scheme accounts for a diverse variety of VANET-specific characteristics such as the gradual introduction of technology, highly dynamic topology, roadconstrained vehicle movement and the presence of obstacles. The scheme incorporates a geometrical framework previously proposed by the authors which makes it appropriate for urban as well as rural area deployments. Moreover, by making the scheme probabilistic, capacity-delay tradeoffs crucial for safety message exchange are addressed. Although the presence of infrastructure is a privilege to our scheme, the network can still operate in a pure ad hoc manner. Simulation results confirm that our heuristic method dramatically improves the probability of reception of nodes in different scenarios.

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“…For reliable broadcast CSMA-based MAC protocols, it has been proposed adaptations of the RTS/CTS/ACK mechanism for broadcasting transmissions, performing it with all receivers [46], [47], [48] or by selecting a single (farthest) neighbour [49], [50]. The safety messages are short and could be comparable with those of the control packets.…”

Section: Vehicular Broadcast Mac For Safety Messagesmentioning

confidence: 99%

Difusão periódica ótima em redes veiculares com restrição de tempo considerando o terminal escondido

Rivera¹,

Camilo²

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A minha família que me apoia na distância, a minha esposa que me acompanhou nesta aventura e a todos aqueles que de uma forma ou outra estiveram envolvidos neste trabalho. Obrigado!! Juan Camilo Montealegre Rivera Agradecimentos A minha esposa Maribel, pelo carinho, paciência e ajuda nestes anos, por ter tido a coragem de me acompanhar nesta aventura e me ajudar em cada passo. Aos meus caros amigos, Jose Daniel Echeverri e Juan Esteban García, por ter-me motivado a vir ao Brasil para fazer o mestrado, e sua valiosa ajuda e acompanhamento. Ao meu caro amigo Alvaro García, pelas agradáveis conversas e companhia na distância. Aos meus colegas do GPDS pelo companheirismo e ajuda nestes anos. Ao meu orientador, o professor Renato Mariz e meu co-orientador, o professor Marcelo Menezes de Carvalho, por terem acreditado e depositado sua conança em mim e pela paciência e motivação durantes estes dois anos.Juan Camilo Montealegre Rivera RESUMO Este trabalho faz uma análise para o acesso aleatório ótimo na transmissão de mensagens com prazo de entrega nal em uma rede de rádio cognitivo, considerando que a mensagem deve ser entregue para todos os nós da rede em um prazo de entrega denido. O transmissor é um usuário secundário (SU) que acessa o canal usado pelos usuários primários de forma oportunista. O protocolo de controle de acesso ao meio usado é o Slotted-Aloha onde uma transmissão por difusão tem sucesso se todos os nós receptores, dentro do alcance de transmissão do emissor, recebem a mensagem dentro do prazo de entrega denido previamente. Uma abordagem com re-transmissão de mensagens é utilizada para melhorar a conabilidade da entrega, que necessita ter uma taxa de sucesso maior ou igual a 99,9 %, com uma latência máxima de 100 ms para cumprir as regulamentações de segurança das redes veiculares. Além disso, um novo método de análise de transmissão periódica é proposto usando uma abordagem com coecientes multinomiais e outra baseada na função de distribuição de probabilidade geométrica. ABSTRACTThis work analyses an optimal random access for broadcasting messages with deadline in a cognitive radio (CR) network considering that the message must be delivery to all nodes in the network in a strict known delivery time. The transmitter is a secondary user (SU) that accesses the primary users (PUs) channel opportunistically. The slotted-Aloha medium access control (MAC) protocol is considered assuming that a successful broadcast transmission from a SU happens if all the receiver nodes within the SU transmission range receive the SU message within a given deadline.A re-broadcast approach is used to improve the reliability of the message delivery which requires a probability of success greater than or equal to 99.9% with a latency of 100 ms. Also a novel method of analysis for periodic broadcast using multinomial coecients is introduced, as well as a method that considers a geometric distribution approach.

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Black-Burst-Based Multihop Broadcast Protocols for Vehicular Networks

Cited by 125 publications

References 13 publications

An Efficient Broadcast Technique for Vehicular Networks

An Efficient Broadcast Technique for Vehicular Networks

A Universal Geocast Scheme for Vehicular Ad Hoc Networks

Difusão periódica ótima em redes veiculares com restrição de tempo considerando o terminal escondido

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