Where does the built-in 4G network in cars come from?
2 Answers
The built-in 4G network in cars is enabled by using a bound SIM card inside the vehicle. Here are the relevant details: 1. Principle: The principle of using the built-in 4G network is the same as that of a mobile phone SIM card. Although both car 4G networks and mobile networks operate via bound SIM cards, the car's SIM card is specially designed and built into the multifunctional vehicle. Even if a mobile phone SIM card could be inserted into the multifunctional vehicle, the system wouldn't recognize it, so the two are not interchangeable. 2. Vehicle network: The vehicle network originally used a point-to-point wiring method for communication between internal sensors, controls, and actuators, forming a complex mesh structure.
I've seen many cars with built-in 4G networks, which are actually achieved through an in-vehicle communication module. It's built into the car, somewhat like a small box with a SIM card. This SIM card is usually pre-installed by the car manufacturer and connects to mobile network base stations, such as those from telecom or mobile signal towers. When you're driving, the module automatically searches for signals and establishes a connection, similar to how a mobile phone accesses the internet. This allows you to use real-time navigation, listen to online music, or check the weather in your car. However, the quality of the module and its installation location are crucial. High-quality models use premium components to avoid unstable signals, while older cars might experience poor signals due to aging modules. Regular maintenance checks are advisable to prevent mid-journey disconnections that could affect your travel experience. In short, this feature is quite convenient, but it ultimately relies on those signal towers and the SIM card.
