Automotive Telematics System — Overview & Specifications

Overview

Telematics refers to the integrated use of telecommunications and informatics for sending, receiving, and storing vehicle-related information. Modern automotive telematics systems play a critical role in vehicle safety, connectivity, diagnostics, remote services, and fleet management.

An automotive telematics system enables secure two-way communication between the vehicle, cloud services, OEM backend platforms, and user mobile applications.

1. System Overview

Automotive telematics systems integrate multiple hardware and software components to provide real-time vehicle data and remote control capabilities.

  • GNSS module (GPS, GLONASS, Galileo, BeiDou)
  • Cellular modem (4G / 5G, LTE Cat-4, Cat-1, Cat-M, NB-IoT)
  • Main processor or MCU
  • Vehicle interface (Automotive & Non-Automotive CAN)
  • Embedded SIM (eSIM / eUICC)
  • Onboard sensors
  • Cloud backend and mobile application

The system enables reliable data exchange between the vehicle, cloud infrastructure, OEM platforms, fleet operators, and end users.

2. Core Specifications

2.1 Hardware Specifications
GNSS
  • Multi-constellation support: GPS, GLONASS, Galileo, BeiDou
  • Position accuracy: 1 – 3 meters (typical)
  • Assisted GPS (A-GPS) support
  • Dead reckoning support (optional)
Cellular Connectivity
  • Supported Technologies:
    • LTE Cat-4 / Cat-6 (high-speed data)
    • LTE Cat-1 (mid-tier connectivity)
    • LTE Cat-M1 / NB-IoT (low power)
    • 5G NSA / SA (premium models)
  • Frequency bands: Regional or global variants
  • Embedded SIM (eSIM / eUICC) support
Processor / MCU
  • ARM Cortex-A7 / Cortex-A53 processor or automotive-grade MCU
  • Secure hardware support (HSM / TPM)
Vehicle Interface
  • CAN / CAN-FD (ISO 11898 compliant)
  • Automotive and non-automotive CAN support
  • Ethernet interface (optional, for ADAS and high-bandwidth systems)
Sensors
  • Accelerometer and gyroscope for motion and crash detection
  • Temperature sensor
  • Battery voltage monitoring
Memory
  • Flash storage: 1 GB – 32 GB (based on application requirements)
  • RAM: 512 MB – 2 GB (use case dependent)