A Scalable CSMA and Self-Organizing TDMA MAC for IEEE 802.11 p/1609.x in VANETs

Zhang, Lin; Liu, Zishan; Zou, R.; Guo, Jinglin; Liu, Yu

doi:10.1007/s11277-013-1572-3

Cited by 63 publications

(41 citation statements)

References 13 publications

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“…In [1] they addressed the issue related to broadcasting of message delay in control channel to cater this they proposed a methodology that adopts the mechanism of both TDMA and CSMA for simultaneous channel switching and scheduling. Their methodology adopted will provide efficient broadcasting due to fact they are modelled to share the service control and the intervals channel control intervals.…”

Section: Literature Surveymentioning

confidence: 99%

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Selective Mac for Obstacle Aware Cev Environmental Model for Vanet (V2v)

B¹,

Tarannum²

2017

IJCT

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Section: Literature Surveymentioning

confidence: 99%

“…All these concerns can be rectified by prototyping a trustworthy MAC layer protocol which can adapt to dynamic nature of VANET application services. The scholars have improved the present MAC 802.11 standard, namely MAC 802.11p to guarantee the QoS requirements [1]. The Fig.1 represents the V2V communication architecture.…”

Section: Introductionmentioning

confidence: 99%

Selective Mac for Obstacle Aware Cev Environmental Model for Vanet (V2v)

B¹,

Tarannum²

2017

IJCT

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“…Zhang et al in [29] have proposed a novel multichannel MAC protocol called CS-TDMA combining CSMA with TDMA and SDMA to improve the broadcast performance in VANETs. CS-TDMA is a multichannel version of the SOFTMAC protocol and it implements the same MAC frame structure as SOFTMAC.…”

Section: ) Csma and Self-organizing Tdma Mac (Cs-tdma)mentioning

confidence: 99%

A Survey and Analysis on TDMA Based MAC Protocols for VANETs

Batth¹

2017

IJRASET

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Vehicular Ad hoc Networks, known as VANETs, are deployed to decrease the probability of road accidents and to improve passenger comfort by allowing vehicles to exchange different kinds of data messages between the mobile vehicles and the installed infrastructure. VANETs facilitate improved traffic safety and efficiency. Each vehicle can exchange information to inform other vehicles about the current status of the traffic flow or a dangerous situation such as an accident. Moreover, traffic safety applications need a reliable communication scheme with minimal transmission collision, which leads to the need for an efficient and reliable MAC. Design MAC for VANETs is a complex task due to the high mobility of the nodes, the frequent changes in topology, the lack of an infrastructure, and various QoS requirements. In the past years, various Time Division Multiple Access (TDMA) based medium access control protocols have been proposed for VANETs in an attempt to assure that all the vehicles have sufficient time to send safety messages with minimum collisions and to reduce the end-to-end delay and the packet loss ratio. In this survey paper a qualitative comparison provided in order to improve the performance of TDMA-based MAC protocols for V2V communication and also focused on the detailed characteristics of these protocols, their benefits and limitations. Keywords: Ad hoc, DSRC, IEEE 802.11p, MAC Protocols, TDMA, QoS, V2V, V2I, VANET. I. INTRODUCTIONVehicular ad hoc networks (VANETs) are emerging as a promising technology for providing safety and comfort applications for vehicular transportation. VANETs are receiving growing attention from the research community and from the transportation industry because of their great potential to improve traffic safety on roads. They can also be used to improve traffic management conditions and to provide on-board infotainment such as Internet access, video streaming, etc. VANETs are an example of Mobile Ad hoc Networks (MANETs) but with their own specification: high node mobility with constrained movements and the mobile nodes have ample energy and computing power (i.e. Storage and processing) [1]. In VANETs, communications can either be between vehicles V2V (Vehicle To Vehicle) or between vehicles and roadside units V2I [2] (Vehicle to Infrastructure). The applications for V2V and V2I can be divided into the following three services: safety services, traffic management and useroriented services [3], [4]. Safety services have special requirements in terms of quality of service. In fact, bounded transmission delays as well as low access delays are mandatory in order to offer the highest possible level of safety. At the same time, useroriented services need a broad bandwidth. Medium Access Control will play an important role in satisfying these requirements. In VANETs, the nodes share a common wireless channel by using the same radio frequencies and therefore an inappropriate use of the channel may lead to collisions and a waste of bandwidth. Hence, channel sharing is the...

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“…CSMA 방식은 unbounded latency와 broadcast storm 문제를 야 기하며 [2] , 최근 연구에 따르면 노드 밀집도가 올라갈 경 우 ALOHA 수준의 열악한 성능을 보이게 된다 [4] . 이러한 [5] .…”

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“…해당 cell 내 존 재하는 노드들은 데이터를 전송하기 위해 frame 내 slot 을 controller 없이 자율적인 분배방식을 통해 할당받는 다. TDV에서는 2가지 종류의 충돌이 발생할 수 있는데, 같은 그룹에 속한 둘 이상의 노드가 동일한 slot에 접근 을 시도하는 경우 발생하는 access collision과 다른 그룹 에 속하지만 동일한 slot을 사용하는 노드가 서로 가까워 질 경우 발생하는 merging collision이 그것이다 [1], [2] . 따 라서 TDV의 경우 2가지 충돌을 어떻게 해결할 것인지에 초점을 맞추어 프로토콜이 설계되며, 대표적인 예로 VeMAC [3] , CSMA and Self-Organizing TDMA (CS-TDMA) [5] 등이 있다. …”

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TDMA-based MAC Protocol for Implementation of Ultra-low latency in Vehicular networks

Park¹,

Joung²,

Choe³

2017

JIIBC

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In mission-critical applications such as vehicular networks, distributed robotics, and other cyber-physical systems, the requirements for latency are more stringent than traditional applications. Among them, autonomous V2V communication is a rapidly emerging domain of applications with a few milliseconds' latency requirements. Today's systems utilizing 802.11p or LTE-direct standards are not primarily designed for ultra-low latency. Because the medium access function contributes to a significant portion of the total latency, it is necessary to modify Layer2 in order to solve the problem. Focusing on MAC layer, we developed a scalable and latency-guaranteed MAC by devising Autonomous TDMA (ATDMA) in which autonomous joining/leaving is allowed without scheduling by coordinator. We also evaluated the performance of the algorithm by comparing with the WAVE protocol.

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A Scalable CSMA and Self-Organizing TDMA MAC for IEEE 802.11 p/1609.x in VANETs

Cited by 63 publications

References 13 publications

Selective Mac for Obstacle Aware Cev Environmental Model for Vanet (V2v)

Selective Mac for Obstacle Aware Cev Environmental Model for Vanet (V2v)

A Survey and Analysis on TDMA Based MAC Protocols for VANETs

TDMA-based MAC Protocol for Implementation of Ultra-low latency in Vehicular networks

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