# Context-Aware Enhanced Application-Specific Handover in 5G V2X Networks
### The Integration of AR Applications for Vehicle-to-Everything (V2X)  
The increased integration of vehicles into human lives, not only as a means of transportation, has resulted in an increase in safety issues under both road and driving conditions. Mobile networks have evolved to support broadband communications that require high data rates, improved network coverage, high reliability, and ultra-low latency. Further improvements in network operations that reduce management complexity and enable reliable handover operations and seamless network transfers can result in the integration of multimedia applications in automotive use cases that require speed, responsiveness, and reliability for data transfers.  
V2X is a type of communication between transport vehicles (V2V), pedestrians (V2P), infrastructure (V2I), and networks (V2N) that greatly benefit from the features of 5G networks, particularly those that involve the implementation of applications focusing on road and traffic safety. AR is one such application that is expected to improve V2X safety using digital information and objects that are overlaid on roads or traffic environments [2]. The deployment of AR in V2X use cases, as presented in Figure 1, attributed to 5G Advanced (3 GPP Release 18, building on Releases 15, 16, 17), will bring notable developments that focus on the following topics [3,4]:  
* Intelligent network automation: This network provides AI/ML implementation for intelligent network operations.
* Extended reality (XR): This concept refers to future immersive technology that enhances the capabilities of MR and its technologies by allowing for multi-sensory interactions. It aims to increase human sensory perception by augmenting the existing world with additional information or by constructing entirely new environments. It benefits from high-data-rate communication and Low Latency Low Loss (L4S), which allows latency to be prioritized over data rates in the event of traffic congestion.
* Reduced Capability (RedCap) NR Devices: RedCap devices focus on Broadband IoT use cases, allowing reduced modern costs, design relaxation, leaner procedures, and support for extended discontinuous reception (eDRX).
* Network Energy Savings: This concept focuses on traffic load balancing and sleep mode for Next-Generation Node B (gNB) to enhance network energy-saving schemes.
* Deterministic Networking for IoT: This network provides support for use cases where there are heavy requirements for bounded low latency, low-delay variation, and extremely low losses.  
The integration of AR applications in V2X will become more prominent in the following areas, as enabled by the features of 5G networks [5]:  
* Driving Assistance and Safety: AR's seamless access to information storage enables the real-time rendering of visual cues in the road environment, enhancing awareness and attention through alerts for emergency behaviors, bad road conditions, and unfavorable weather patterns.
* Navigation: AR can be used to access real-time information to show navigation aids that not only provide proper guidance but also reduce unwanted distractions.
* Human-Machine Interface: AR fosters the development and use of output devices such as windshield displays (WSDs) and heads-up displays (HUDs) that enhance the visual fidelity of the driving environment. AR can also provide information such as driving conditions, behavior, and intent externally to vulnerable road users such as pedestrians and cyclists.
* Passenger Experience: AR can provide in-vehicle passenger instructions and entertainment that improve comfort and ease anxiety.