The rest of the paper is structured as follow: Section 2 discusses the Multi-Layer Challenges in VANETs, along with the proposed solutions.Section 3 focuses on the current trends in research and the future work, and finally Section 4 concludes the paper.The Dedicated Short Range Communication (DSRC) technology supports the vehicular communications through Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (V2I) Communication, by operating at 5.9 GHz band (U. There has been a lot of research regarding several challenges in VANETs, from spectrum utilization to multichannel operation and from routing to security issues.
The rest of the paper is structured as follow: Section 2 discusses the Multi-Layer Challenges in VANETs, along with the proposed solutions.Section 3 focuses on the current trends in research and the future work, and finally Section 4 concludes the paper.Tags: Golden Age Of Athens EssaySelf Introduction Essay Untuk BeasiswaEssay About ObedienceImport Export Business Plan SampleEssays For English RegentsProblem At Work EssayAfv Assignment AmericaThesis On Electricity SupplyEssays On Conflict In Dulce Et Decorum EstCollege Essay Perseverance
The Physical (PHY) and MAC Layer challenges presented in  explains in depth the Channel Estimation at PHY layer and behavior of Carrier Sense Multiple Access (CSMA) in high node density and potential solutions to the congestion control along with the Multi-Channel Operations in IEEE 1609.4.
The performance using Single and Multiple Radios has been discussed along with some simulation results.
DSRC; V2V; V2I; VANET; MAC; WAVE; Carrier Sense Multiple Access (CSMA); Time Division Multiple Access (TDMA); PHY; Self Organized Time Division Multiple Access (STDMA); Cognitive Radios (CR); Vehicle-to-Everything (V2X)Roadside accidents have increased significantly due to high traffic on highways and urban areas.
In order to provide a reliable driving experience and avoiding accidents, vehicular communication was introduced to provide safety and to increase the travel experience of the user by providing on demand infotainment services.
Moreover, the paper also highlights the evolution of the DSRC from the PHY and MAC Layer perspective.  give a very clear picture of the Multi-Channel Communications in VANETs.
Routing In Vanets Thesis
It gives an overview of the WAVE Stack, the Multi-Channel Operation; its issues and the countermeasures, some open issues which are not addressed yet, and like  uses both the Single and Multiple Radios approach to explaining the problem.
The Dedicated Short Range Communication (DSRC) technology is being used for the safety and non-safety applications in vehicular communication.
The allocated bandwidth of 75 MHz in 5.9 GHz spectrum band is being utilized for this purpose .
In less dense VANETs, several performance issues are ignored as the currently available standards and protocols offer reliable performance; however, as the network size increases, many new challenges appear.
The inefficiency of certain protocols becomes evident and several trade-offs exist.