Chapter 1 Introduction: intelligent vehicular communications

1.4.1
EXISTING VEHICULAR COMMUNICATION
1.4.1.1 DSRC
Dedicated short-range communications (DSRC) has close association with the discussed WAVE sys-
tems. The FCC in the United States, allocated 75 MHz of spectrum in the 5.95 GHz band for intelligent 
transportation. The purpose of DSRC is to provide high data transfers and low communication latency 
in a small communication area on vehicular networks. Hence, this type of communication covers a 
wide range of applications such as V2V safety messages, traffic information updates, toll-fee collec-
tion, and several other applications. DSRC-based systems are used in the majority of places all around 
the globe, particularly by EU Member States; however, these systems are currently not compatible. 
Therefore, the role of standardization is important in order to ensure interoperability, specifically in 
applications such as toll collection, for which the European Union imposes a need for interoperability 
of systems. Harmonization of different standards will ensure the provision and promotion of additional 
services using DSRC systems in ITS. CEN TC 278 produced the following standards for DSRC, EN 
12253, EN 12795, EN 12834 [ISO 15628], and EN 13372 for ITS. On the other hand, SAE has SAE 
J2735 for DSRC message set dictionary used for intelligent transportation.
1.4.1.2 WAVE
WAVE system intended to provide continuous, interoperable services for ITS. The focus of WAVE is 
about the communication between vehicles and vehicle to infrastructure. This service is acknowledged 
by the United States’ national ITS architecture and other research and industrial sectors. In order to 
specify the technologies associated with WAVE, the term DSRC is frequently used. The FCC has al-
located bandwidth for DSRC system mobile services in ITS, and SAE J2735 has specified 5.9 GHz 
DSRC for the purpose of applications intended for the utilization of WAVE. With respect to vehicular 
networks, the WAVE systems currently visualize the design to meet the communication requirements. 
The IEEE WAVE standards documents, includes IEEE Std 1609.-2013, IEEE Std 1609-2010, IEEE 

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