I. Project Background

With the rapid development of intelligent transportation and vehicle networking technologies, traditional communication methods—constrained by centralized architectures and fixed infrastructure—struggle to meet the demands of dynamic vehicle networking, real-time interaction, and communication in complex scenarios. Key challenges of traditional solutions include:

• Low Real-Time Performance: Data requires centralized processing, leading to high latency and hindering immediate decision-making.
• Weak Fault Tolerance: Single-point failures easily cause network paralysis.
• Poor Scenario Adaptability: Difficulty in covering complex environments such as mountainous areas, tunnels, and dense urban areas.

To address these issues, this solution adopts Mesh ad-hoc network technology, establishing a decentralized, multi-hop relay-based distributed network to achieve seamless inter-vehicle communication. This approach breaks through traditional technical barriers, significantly improving data transmission efficiency and network reliability.

II. Technical Architecture and Core Advantages

1. Principles of Mesh Ad-Hoc Network Technology

The Mesh network utilizes a dynamic topology where each node (MP) integrates three roles: gateway, router, and client, supporting autonomous networking and intelligent routing. Core features include:

• Self-Organization: Nodes automatically form networks upon activation without manual configuration.
• Self-Healing: Automatic path switching ensures continuous communication if a node fails.
• Multi-Hop Coordination: Extends coverage via relay nodes, enabling Non-Line-of-Sight (NLOS) transmission.

2. Technical Advantages

Decentralized Architecture: Peer-to-peer nodes eliminate single-point failure risks.

• Dynamic Routing Optimization: Real-time routing table updates based on channel quality and traffic load.
• High Mobility Support: Adaptive topology adjustment during rapid node movement, ensuring seamless switching for high-bandwidth services like voice and video.
• Robust Anti-Interference: Combines ARQ retransmission, frequency avoidance, and multi-path transmission to guarantee stability in complex environments.

III. Core System Features

1. Decentralized Single-Frequency Networking Peer-to-peer nodes with bidirectional communication on a single frequency, improving spectrum efficiency by 30%. Supports rapid integration of vehicle-mounted and portable devices.

2. Dynamic Topology Management Supports 32-node single-frequency networking. Routing tables update within seconds during topology changes, ensuring zero service interruption.

3. Intelligent Routing Selection Automatically switches to suboptimal paths when bandwidth is insufficient, prioritizing data transmission (video > voice > data).

4. Multi-Scenario Coverage Stable communication in weak-coverage areas (e.g., mountains, tunnels, underground spaces) via multi-hop relays and diffraction/reflection techniques.

5. High-Reliability Transmission Peak bandwidth of 70Mbps (20MHz carrier), supporting HD video streaming. ARQ mechanisms reduce packet loss to below 0.1%.

6. Security Encryption Utilizes MESHID group encryption, dynamic 64-bit keys, and AES128/256 source encryption to prevent unauthorized access, meeting military-grade security standards.

7. Multi-Service Integration Supports transparent transmission of voice, video, data, and BeiDou/GPS positioning information. Compatible with public networks, private networks, and satellite systems.

IV. Typical Application Scenarios

• Emergency Command and Dispatch: Rapid network deployment at disaster sites to ensure real-time communication among rescue vehicles.
• Intelligent Fleet Management: Dynamic networking for logistics fleets enables vehicle status monitoring and route coordination.
• Autonomous Driving Collaboration: V2X communication facilitates multi-vehicle perception data sharing, enhancing autonomous driving safety.
• Military Special Operations: Robust networks adapt to complex battlefield environments, ensuring uninterrupted command chains.

V. Summary

This solution leverages Mesh ad-hoc network technology to build a highly reliable, low-latency, and adaptable vehicle communication network. It addresses inherent flaws in traditional architectures and is applicable across civilian, industrial, and military domains. With its decentralized design, dynamic routing optimization, and multi-service integration capabilities, this solution provides critical technical support for the future development of intelligent transportation and vehicle networking.