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5G communication module for cars

20.10.2019

The South Korean company LG Innotek has introduced an automotive communication module that supports 5G networks. According to the manufacturer, this is the world's first 5G module for cars. It is built on the Qualcomm element base.

The design of the module includes a modem, memory and RF circuits - about 480 components in total. The module provides real-time traffic information exchange, precise location determination, V2X (Vehicle-to-Everything - between the vehicle and surrounding objects) communication and transmission of large amounts of data. In other words, it performs the key functions required for fully autonomous driving without driver intervention.

Using 5G technology for an in-vehicle communication module has proved challenging because it uses high frequencies, resulting in more signal loss than LTE (Long Term Evolution, 4G mobile technology). Another problem is the high heat dissipation.

However, 5G provides an important advantage: the module introduces a delay of 1 ms or less, which is an order of magnitude less than the delay of the LTE module. As a result, for example, if a self-driving vehicle traveling at a speed of 100 km/h detects an obstacle and activates the emergency braking function, in the case of an LTE module, braking starts after the vehicle has traveled 1,4 m, and with a 5G module, only 2,8 cm.

The dimensions of the module are 40 x 50 x 3,5 mm, so it is easy to install it anywhere inside or outside the car. Compatibility with LTE modules allows you to replace existing LTE modules without changing the system design.

The module can be used regardless of region or vehicle type as it complies with 3GPP Release 15.

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