The ability to rapidly get important content to a vehicle, such as vehicle firmware updates, live traffic data, or autonomous driving imaging data, depends upon the vehicle having a reliable and fast connection to the cloud. When the vehicle is in range of multiple networks, the CVG is able to aggregate the bandwidth of all of the available links to increase the available speed, reducing the bottleneck between the car and the cloud.
Mobile networks have not always been designed to accommodate large content transfers, or real-time data sessions. In order to improve performance and reduce costs on legacy mobile networks, the CVG also provides network transport optimizations. This further reduces the amount of time it takes to get critical content to the vehicle.
Bandwidth Aggregation in action
This video shows the CVG’s ability to use multiple network connections simultaneously for faster download and upload speeds. A speed test is first conducted over the CVG embedded LTE connection, resulting in a download speed of 27.35 Mbps and an upload speed of 6.08 Mbps. The speed test is then repeated using both the embedded LTE and an external Wi-Fi connection simultaneously, resulting in a download speed of 52.31 Mbps and an upload speed of 7.88 Mbps. This demonstrates a 91% improvement in download speed and a 30% improvement in upload speed.
How it Works
The CVG is able to avoid network slowdowns caused by congestion or poor coverage by utilizing all available networks to increase the network capacity available to the vehicle. Using patented algorithms, the CVG can aggregate network traffic over the embedded cellular radio, external Wi-Fi networks, and passenger smartphones to provide faster speeds and improved reliability.
The CVG, seen the diagram below, is connected to both an LTE network and a public Wi-Fi network. The infotainment system, connected to the CVG, is able to use both of these networks simultaneously to get data from the cloud more quickly than using just the LTE network alone.