# A Novel Energy-Efficient Reservation System for Edge Computing in 6G Vehicular Ad Hoc Network
## 1 Introduction  
VANETs are wireless ad hoc networks that allow vehicles to interact with one another, with infrastructures, and with other highway users. VANETs have the capacity to transform the field of transportation by serving as an operating system to ensure safeguarding, improve the efficiency of traffic, and offer entertainment applications. The VANET is a well-known vehicle network with capabilities including self-configuration and self-organization. It can range from a highly dense to a very sparse topology. Along with cases of dense network topologies, the presence of vehicles on the route makes it easy to offer end-to-end multi-hop connectivity among the nodes. VANETs, however, have several limitations,including high mobility, frequent topology changes, and a restricted transmission reach. The introduction of 6G technology provides an opportunity to overcome a few of these issues and increase the VANET's efficiency. The term \"6G\" refers to the sixth generation of technology for wireless communication, which is projected to deliver even faster data speeds, fewer delays, and more security than the existing 5G technology. The 6G technology is still in its early stages, with many of its characteristics and applications still being researched and developed. Despite this, a few of the most important characteristics anticipated to be incorporated in 6G include Terahertz (THz) frequencies to operate at higher frequencies than the current 5G technology [1; 2], with frequencies ranging from 300 GHz to 3 THz. These high-frequency bands offer a higher bandwidth and lower latency but require new antenna designs and signal processing techniques. In addition, 6G is expected to leverage the power of AI [3] to optimize network performance, improve energy efficiency, and enable new applications, such as autonomous driving and smart cities. Moreover, the Massive MIMO [4] is anticipated to be used in 6G to increase the number of antennas in the base station and enable better beamforming and interference management. Holographic beamforming is among the techniques with the potential to enable precise directional communication and improve energy efficiency. The RSU is one of the fundamental components in VANETs, as it is the first point at which the vehicle communicates in the infrastructure. The state-of-the-art swarm of UAVs for network management in 6G, which is anticipated to offer gigantic connection, all-around coverage, ultra-reliability, and intelligence has been reviewed in this article [5]. Numerous challenges can impact the operational efficiency of VANETs, such as high mobility, frequent topology changes, and a restricted communication range. The 6G technology, with data speeds of up to 1 Tbps, has the ability to overcome some of the aforementioned obstacles and enhance the performance of VANETs in a variety of approaches. The increased data rate has the potential to support novel applications including real-time video streaming and high-definition mapping. Similarly, 6G connectivity is predicted to provide latency that is as low as 1 millisecond; 6G is also expected to provide increased dependability through greater redundancy and enhanced error correction algorithms. Even in high-mobility circumstances, enhanced dependability may ensure that communications are transmitted accurately and on time. This will also boost energy efficiency by utilizing improved power management techniques and innovative antenna layouts. This increased energy efficiency may improve the car battery life and minimize the requirement for battery replacements. The combination of VANETs and delay-tolerant networks (DTNs) has resulted in the concept of vehicular delay-tolerant networks (VDTNs) [6], which is based on the stored-carry-and-forward mechanism of DTNs and applied to the vehicular context.