The escalating growth of vehicles has amplified the complexity of
Vehicle Ad-hoc Networks (VANETs), necessitating innovative strategies to
combat communication delays and disruptions. In this study, we covered a
literature review from 2009 to 2023 where we present a comprehensive
exploration of solutions by integrating Software-Defined Networking
(SDN), Programming Protocol-independent Packet Processors (P4), and
Service Function Chaining (SFC). Our research addresses the core
challenges of VANETs, emphasizing the specific problem of communication
We conducted an in-depth analysis of SDNâ\euro™s application in
VANETs, showcasing its potential to enhance network efficiency and
adaptability. Additionally, we delve into the practical implementation
of P4 architecture in traffic management and multihoming environments,
elucidating its pivotal role in improving VANET performance.
Simultaneously, we explore the intricacies of SFC and its support for
services and policies in VANETs.
Our study reveals novel approaches to mitigate delays in VANETs,
presenting valuable insights for both researchers and practitioners. By
integrating SDN, P4 architecture, and SFC in a multihoming environment,
our research not only advances the understanding of VANET challenges but
also provides practical and implementable solutions for achieving
efficient and low-latency vehicular communication networks. This work do
not only contributes to the academic discourse but also holds
significant promise for real-world applications, marking a pivotal step
towards the future of seamless vehicular communications.