Core Viewpoint - The article emphasizes the importance of the Vehicle Bus System (VBS) as a digital nervous system for smart vehicles, providing a unified protocol and efficient transmission mechanism to enhance reliability and security in automotive communication [3][4]. Group 1: Overview of the Communication Bus - The VBS is designed as an efficient data interaction communication platform for smart vehicles, enabling real-time and reliable information channels for various services such as autonomous driving and active safety [4]. Group 2: Background of the Communication Bus - The development of VBS is driven by the need to address the limitations of traditional distributed ECU architectures in the face of rapid electrification, intelligence, and connectivity in vehicles. Key goals include improving development efficiency and reducing costs through standardized protocols and self-developed technologies [6]. - The VBS aims to enhance product competitiveness by optimizing resource usage, reducing communication latency, and allowing for deep customization to meet specific automotive requirements [6]. Group 3: Technical Architecture of the Communication Bus - The VBS employs a "protocol unification + hardware independence" architecture, facilitating deep collaboration across various vehicle domains without the need for multiple protocol translations [9]. - The system supports multiple communication modes and provides a multi-language SDK, ensuring flexibility and adaptability in various deployment scenarios [11]. Group 4: Core Technical Features of the Communication Bus - The VBS features self-decision transmission, allowing it to adapt to various transmission media, thereby simplifying the development process and reducing costs [13]. - Enhanced reliability mechanisms are implemented, including end-to-end verification and redundancy in transmission, ensuring critical commands reach their destination reliably [15]. - The system is designed to minimize resource overhead, allowing for a higher number of deployable services on resource-constrained devices [15]. Group 5: Security Enhancements - The VBS incorporates a multi-layered security framework, including device-level authentication, application-level permissions, and session-level data encryption to safeguard against unauthorized access and data breaches [20][22]. Group 6: Typical Application Scenarios - The VBS connects various subsystems within the vehicle, enabling data sharing and collaboration essential for overall vehicle intelligence, including applications in assisted driving and smart cockpit systems [21][22]. Group 7: Conclusion - The VBS is positioned as a critical component in the evolution of automotive electronic architectures, supporting the transition to software-defined vehicles and enhancing the overall intelligent and personalized driving experience [22].