Delta Compression in Automotive Software Updates: Optimizing airwave utilization

The automotive industry relies heavily on OTA (Over-the-Air) updates. These updates enhance performance, security, and features. But there's a challenge for automakers—data efficiency.

Automakers need to deliver complete software updates quickly. At the same time, they must reduce bandwidth usage and costs. Here, delta compression comes in.

 

By updating only the modified parts of the software instead of transmitting entire files, delta compression considerably lowers data size, enhancing the speed of OTA update delivery while reducing the cost to OEMs and customers.

How does delta compression optimize in-vehicle networks, leverage automotive Ethernet, and enhance IP camera software, ensuring a seamless connected vehicle experience?

Let's dive in!

 

What is Delta Compression in Automotive OTA Updates?

Traditional OTA updates send entire software packages, consuming bandwidth, increasing update times, and driving up costs.

 

Delta compression solves this by transmitting only the differences (deltas) between the old and new software versions.

Smaller update sizes = Faster delivery

Reduced airwave congestion = Optimized in-vehicle network connectivity

Lower data transmission costs for both OEMs and consumers

 

Typical example - Instead of sending a 500MB update, delta compression delivers just 50MB by transmitting only the modified files—reducing data usage by up to 90%.

 

How Delta Compression Optimizes OTA Update Delivery

 

1. Reducing Cost to Consumers & OEMs

Lower data costs: Smaller update sizes mean fewer cellular data charges for consumers who receive updates over mobile networks.

Reduced infrastructure load: OEMs spend less on server bandwidth, cloud storage, and OTA infrastructure.

A leading EV manufacturer deploys delta compression to push infotainment updates, cutting update costs by 70% while improving download speeds.

 

2. Enhancing Speed of OTA Update Delivery

Faster software rollouts: Vehicles receive updates in minutes instead of hours.

Minimized downtime: Reduces the time vehicles remain inactive during updates.

Global scalability: Enables automakers to push software changes efficiently across multiple regions.

A fleet operator updates 10,000+ connected vehicles using delta compression, completing updates 5x faster than full-file OTA downloads.

 

3. Optimizing In-Vehicle Network Efficiency

The in-vehicle network manages data communication between multiple electronic control units (ECUs) and onboard systems. Delta compression reduces network congestion by minimizing update traffic.

Key Technologies Enhancing In-Vehicle OTA Updates:

✔ Automotive Ethernet & TSN (Time-Sensitive Networking): Ensures precise and timely data delivery across vehicle components.

✔ IP Cameras Software Optimization: OTA updates enhance ADAS (Advanced Driver Assistance Systems) without consuming excessive bandwidth.

A connected vehicle uses automotive Ethernet TSN to prioritize delta-compressed OTA updates, ensuring real-time updates for ADAS camera software without interfering with essential driving functions.

 

Delta Compression + Automotive Ethernet: The Future of OTA Updates

The combination of delta compression and automotive Ethernet enables:

✔ Seamless updates for autonomous vehicles

✔ Real-time improvements for safety systems

✔ Cost-effective, high-speed software rollouts

Optimizing airwave utilization will be critical for efficient OTA update delivery as connected vehicles become more software-defined.

 

Final Thoughts

As OEMs and automakers embrace delta compression, a secure, scalable solution is essential. Excelfore provides cutting-edge cloud-to-vehicle connectivity and OTA software management to ensure seamless software updates with minimal bandwidth usage. Optimized in-vehicle network ensures faster and more reliable OTA updates.

 

Looking to enhance your OTA efficiency? Contact us now!

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