Intelligent GPS-less Speed Detection and clustering in VANET

Chung, Tein-Yaw; Cheng, Wen-Mei; Yuan, Fong-Ching

doi:10.1109/icufn.2012.6261682

Cited by 3 publications

(1 citation statement)

References 13 publications

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“…There are several clustering methods which exploit particular features of VANETs such as geographical location, relative speed, network connectivity, signal strength, etc. to make steady clusters of vehicles [18][19][20][21][22][23][24]. By using clustering, stable groups of vehicles known as clusters are made whereby a MAC protocol can take advantage of relative stability of network, reduced competition, increased throughput, extended radio capacity through reusing spectrum, and improved scalability [25][26][27].…”

Section: Medium Access Control Approachesmentioning

confidence: 99%

A bandwidth-efficient and fair CSMA/TDMA based multichannel MAC scheme for V2V communications

Torabi

Ghahfarokhi

2016

Telecommun Syst

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Designing QoS-aware medium access control (MAC) scheme is a challenging issue in vehicular ad hoc networks. Proportional fairness and bandwidth utilization are among the significant requirements that should be taken into account by a MAC scheme. In this paper, a bandwidthefficient and fair multichannel MAC protocol is proposed to address these two requirements, specifically in vehicleto-vehicle communications. The proposed scheme is based on clustering of vehicles and exploits time division multiple access (TDMA) method alongside the carrier sense multiple access with collision avoidance mechanism to allocate DSRC-based resources in a different manner from IEEE 802.11p/IEEE 1609.4 protocols. It divides each channel into aligned dynamic-sized time frames. In each time frame, in a fully TDMA-based period, transmission opportunities are assigned to vehicles letting them have dedicated transmissions on the service and control channels. The maximum number of transmission opportunities per each frame is determined by the cluster head (CH) based on a defined optimization problem which aims at maximizing both proportional fairness and bandwidth utilization. Furthermore, the bandwidth utilization is assumed to be enhanced more through reallocation of unused transmission opportunities in each time frame, using a proposed reallocation algorithm. The proposed MAC protocol is treated as a lightweight scheme such that various types of unicast, multicast and broadcast communications are possible within the cluster without involving the CH. Evaluation results show that the proposed scheme has more than 90 % achievement in terms of proportional fairness and bandwidth B Nasser Torabi

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Section: Medium Access Control Approachesmentioning

confidence: 99%

A bandwidth-efficient and fair CSMA/TDMA based multichannel MAC scheme for V2V communications

Torabi

Ghahfarokhi

2016

Telecommun Syst

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An robust recursive ant colony optimization strategy in VANET for accident avoidance (RACO-VANET)

Amudhavel¹,

Kumar²,

Jayachandrameena³

et al. 2015

2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015]

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VANET (Vehicle Ad-hoc Network) [1] is an emerging technology that enables the vehicles to communicate with each other. Nowadays, we see there are lots of accidents occurring. An effective way to avoid accidents is to provide congestion free communication between vehicles. VANET allows wireless communication between vehicles and the Road Side Units. In VANET, the vehicles are connected with each other to form a network. The vehicles can pass information within the network. A vehicle can send a message to any vehicle which is present in the network or it can send a message to the Road Side Units. This message passing is done by using many algorithms. We use the Recursive Ant Colony Optimization (RACO) [2,26] Algorithm which is an extension of Ant Colony OptimizationAlgorithm to route the message within the network. Though VANET is a powerful technology, it also has some issues that has to be rectified. Some of the issues are signal fading, connectivity, security, small effective diameter and so on.

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Vehicle interconnection metric and clustering protocol for improved connectivity in vehicular ad hoc networks

Vodopivec

Hajdinjak

Bešter

et al. 2014

J Wireless Com Network

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Communication is the main driving force behind the emerging intelligent transportation systems, which are expected to make traveling safer, more ecological, and faster. The most challenging among all the different communication technologies that will be used are the direct vehicle-to-vehicle communications, because vehicles move with high speeds and in different directions. Apart from that, it is expected that vehicles should be able to organize themselves in an ad hoc network without any assistance from outside entities, such as road side units. To make the ad hoc network less dynamic and communications more reliable, vehicles with similar movement patterns can be grouped together in clusters. Clustering is a well-known method for organizing ad hoc networks and is used in mobile and wireless sensor networks, but with different constraints and goals, so new clustering solutions for vehicular ad hoc networks (VANET) have to be developed. In recent years, this has been a hot topic among researchers and many different clustering algorithms for VANET have been proposed. In this paper, we propose a new clustering metric for VANET, named vehicle interconnection metric, which is based on sending periodic beacons among vehicles and reflects the communication abilities between them. We also propose a new clustering algorithm whose primary goal is increased connectivity and lower number of disconnects. The working principle of this algorithm is also inverted compared to others and uses unneeded cluster head elimination instead of cluster head election. Mathematical analysis of memory usage and communication overhead are provided, predicting low-resource usage. Simulation results, obtained with the ns-3 network simulator and the SUMO vehicle movement simulator, have confirmed the analysis and expected performance in terms of cluster head duration, number of connectivity losses and role switches.

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Intelligent GPS-less Speed Detection and clustering in VANET

Cited by 3 publications

References 13 publications

A bandwidth-efficient and fair CSMA/TDMA based multichannel MAC scheme for V2V communications

A bandwidth-efficient and fair CSMA/TDMA based multichannel MAC scheme for V2V communications

An robust recursive ant colony optimization strategy in VANET for accident avoidance (RACO-VANET)

Vehicle interconnection metric and clustering protocol for improved connectivity in vehicular ad hoc networks

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