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On-line Access: 2014-07-10

Received: 2013-11-21

Revision Accepted: 2014-03-06

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Journal of Zhejiang University SCIENCE C 2014 Vol.15 No.7 P.489-513


Unicast routing protocols for urban vehicular networks: review, taxonomy, and open research issues

Author(s):  Syed Adeel Ali Shah, Muhammad Shiraz, Mostofa Kamal Nasir, Rafidah Binti Md Noor

Affiliation(s):  Mobile Ad Hoc Technology Lab, Faculty of Computer Science and Information Technology, University of Malaya, Kuala Lumpur 50603, Malaysia

Corresponding email(s):   adeelbanuri@siswa.um.edu.my, muh_shiraz@um.edu.my, kamal.mostofa@gmail.com, fidah@um.edu.um

Key Words:  Unicast protocols, Taxonomy, Protocol review, Vehicular ad hoc networks, Geographic routing

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Syed Adeel Ali Shah, Muhammad Shiraz, Mostofa Kamal Nasir, Rafidah Binti Md Noor. Unicast routing protocols for urban vehicular networks: review, taxonomy, and open research issues[J]. Journal of Zhejiang University Science C, 2014, 15(7): 489-513.

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publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Unicast routing protocols for urban vehicular networks: review, taxonomy, and open research issues
%A Syed Adeel Ali Shah
%A Muhammad Shiraz
%A Mostofa Kamal Nasir
%A Rafidah Binti Md Noor
%J Journal of Zhejiang University SCIENCE C
%V 15
%N 7
%P 489-513
%@ 1869-1951
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C1300332

T1 - Unicast routing protocols for urban vehicular networks: review, taxonomy, and open research issues
A1 - Syed Adeel Ali Shah
A1 - Muhammad Shiraz
A1 - Mostofa Kamal Nasir
A1 - Rafidah Binti Md Noor
J0 - Journal of Zhejiang University Science C
VL - 15
IS - 7
SP - 489
EP - 513
%@ 1869-1951
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C1300332

Over the past few years, numerous traffic safety applications have been developed using vehicular ad hoc networks (VANETs). These applications represent public interest and require network-wide dissemination techniques. On the other hand, certain non-safety applications do not require network-wide dissemination techniques. Such applications can be characterized by their individual interest between two vehicles that are geographically apart. In the existing literature, several proposals of unicast protocols exist that can be used for these non-safety applications. Among the proposals, unicast protocols for city scenarios are considered to be most challenging. This implies that in city scenarios unicast protocols show minimal persistence towards highly dynamic vehicular characteristics, including mobility, road structure, and physical environment. Unlike other studies, this review is motivated by the diversity of vehicular characteristics and difficulty of unicast protocol adaption in city scenarios. The review starts with the categorization of unicast protocols for city scenarios according to their requirement for a predefined unicast path. Then, properties of typical city roads are discussed, which helps to explore limitations in efficient unicast communication. Through an exhaustive literature review, we propose a thematic taxonomy based on different aspects of unicast protocol operation. It is followed by a review of selected unicast protocols for city scenarios that reveal their fundamental characteristics. Several significant parameters from the taxonomy are used to qualitatively compare the reviewed protocols. Qualitative comparison also includes critical investigation of distinct approaches taken by researchers in experimental protocol evaluation. As an outcome of this review, we point out open research issues in unicast routing.



Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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