Editorial Data Disseminations in Vehicular Environmentsdownloads.hindawi.com/journals/ijdsn/2013/291635.pdf · Editorial Data Disseminations in Vehicular Environments DongkyunKim,

Hindawi Publishing CorporationInternational Journal of Distributed Sensor NetworksVolume 2013, Article ID 291635, 2 pageshttp://dx.doi.org/10.1155/2013/291635

EditorialData Disseminations in Vehicular Environments

Dongkyun Kim,1 Juan Carlos Cano,2 Wei Wang,3 Floriano De Rango,4 and Kun Hua5

1 School of Computer Science & Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea2Universidad Politecnica de Valencia, Camino de Vera, S/N, 46022 Valencia, Spain3 Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, SD 57007, USA4Department of Informatics, Electronic and Sistemistic, University of Calabria, 87036 Cosenza, Italy5 Department of Electrical and Computer Engineering, Lawrence Technological University, Southfield, MI 48075, USA

Correspondence should be addressed to Dongkyun Kim; [email protected]

Received 5 December 2013; Accepted 5 December 2013

Copyright © 2013 Dongkyun Kim et al.This is an open access article distributed under the Creative Commons Attribution License,which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Vehicular ad hoc networks (VANETs) have been attract-ing researchers worldwide. Until now, VANETs have beenconsidered novel wireless networks for the Internet accessand data transfer during users’ driving along with a widerange of applications. Researchers focus on vehicle-to-vehicle(V2V) and vehicle-to-infrastructure (V2I) communicationswhile providing different applications including safety andenvironmental awareness. Main contributions have focusedon different communication protocols from physical toapplication layers. This new paradigm can be used to facecomplex problems with high requirements such as end-endconnection, self-configuration, and self-repairing throughnetwork while providing services.

This special issue provides recent routing and data dis-semination schemes in vehicular environments, thus featur-ing current and future research waypoints in the field ofVANETs.

The paper titled “A stable routing protocol for vehicles inurban environments,” proposed by H. Yu et al., describesa new idea of improving the network performance byestablishing routes of roads with higher vehicle density.The proposed scheme outperforms existing solutions forvehicular environments like A-STAR and GPSR in terms ofless routing overhead and better packet delivery.

A clustering scheme for ITS has been proposed by Y.Lin et al. in “An adaptive clustering scheme for improving thescalability in intelligent transportation systems.” The authorspropose a solution for the scalability problem of the Internetaccess in ITS through an adaptive gateway dispatchingtechniquewhere gateways are dynamically selected accordingto the specific application’s requirements.

The paper titled “An efficient data dissemination pro-tocol with roadside parked vehicles’ assistance in vehicularnetworks,” proposed by H. Gong et al., provides an efficientdata dissemination protocol for multihop data delivery inVANETs. This protocol supports parked vehicles by theroadside to help forward packets. Clusters of parked vehiclesassist in delivering data especially in an environment wherethe density of mobile vehicles is low.

The paper titled “Broadcasting with prediction and selec-tive forwarding in vehicular networks,” proposed by J. Yanget al., presents amessage broadcasting algorithm forVANETs.Through simulation work, it is observed that the proposedalgorithm outperforms other probabilistic and distance-based approaches by letting a sender node to select the bestnode among its neighbors that can rebroadcast the messagefastest to other nodes.

“Dubhe: a reliable and low latency data disseminationmechanism forVANETs,” proposed by L. Zhang et al., presentsan one-hop data transmission algorithm along with a the-oretical analysis of reliability and retransmission. RSUs areexploited to collect the traffic densities and estimate the real-time transmitting delay between RSUs and a minimum delaypath for packets is selected.

A survey for dynamic channel coordination written byH. Yoo et al. is introduced in the paper titled “Dynamicchannel coordination schemes for IEEE 802.11p/1609 vehicularnetworks: a survey,” where multichannel operations andimprovements for WAVE standard (IEEE 802.11p/1609) areexplored. Qualitative analysis for different schemes has beencarried out with multiple aspects such as cooperation withRSU, control message overhead, interval division criterion,

2 International Journal of Distributed Sensor Networks

and traffic conditions. Furthermore, some research directionsof future works in dynamic interval division protocols forVANETs are discussed.

R. Woo et al. present two analytical models for vehicularcommunication network to process safety and nonsafetymessages in their manuscript “Performance analysis forpriority-based broadcast in vehicular networks.” A Markovchain model is proposed to evaluate the communicationperformances of V2V. The throughput, channel utilization,and end-to-enddelay are evaluated.Thesemodels can be usedto estimate the performance of vehicular communicationnetworks to provide priority services.

A handover scheme for IEEE 802.11p-based networks ispresented in “Proactive caching and forwarding schemes forseamless handover in IEEE wave networks,” proposed by H.Lee et al. The proposed scheme uses the multicasting toforward data packets to all candidate RSUs for proactivecaching.The 𝑛 RSUs send IEEE 802.11f move-notify messagesto the other candidate RSUs in order to avoid the wastage ofradio resources caused by repeated retransmissions of datapackets.

The paper titled “Routing optimization in vehicular net-works: a new approach based on multiobjective metrics andminimum spanning tree,” proposed by P. Fazio et al., is alsoincluded in this special issue. A new routing scheme basedon the optimized path length and link duration is presented.A new multiobjective metric, based on the evaluation ofcochannel interference levels, end-to-end delay, and linkduration along the different links from sources towardsdestinations, has been discussed.

“Seamless QoS-enabled handover scheme using CoMPin fast moving vehicular networks,” proposed by S. Chaeet al., proposes a handover scheme utilizing CoMP for high-speed moving vehicular networks. The CoMP concept ishandled bymultiple outside transceivers and a CCF. Seamlessconnections are maintained between the outside transceiversand eNode.

The paper titled “Secrecy-enhanced data disseminationusing cooperative relaying in vehicular networks,” proposedby L. Sun et al., presents a relay-aided data disseminationprotocol for VANETs. The authors focus on a superpo-sition coding with opportunistic relaying techniques forsecure communications. By using the information theory, theauthors validate their work for realistic systems in future.

Acknowledgments

The guest editors would like to thank the authors for thegreat level of the contributions included in this special issueand the work developed by many experts who participated inthe review process providing constructive comments to theauthors to improve the quality of the papers.

Dongkyun KimJuan Carlos Cano

Wei WangFloriano De Rango

Kun Hua

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Editorial Data Disseminations in Vehicular Environmentsdownloads.hindawi.com/journals/ijdsn/2013/291635.pdf · Editorial Data Disseminations in Vehicular Environments DongkyunKim,