5G will be the next revolutionary change for wireless communication systems. 5G system will support a diverse variety of usage scenarios in three different categories:
- Enhanced mobile broadband (eMBB): traditional uses cases for smartphone users but with increased peak data rate up to 20Gbps with support for high user densities.
- Ultra-reliable and low latency communications (URLLC): support of reliable machine-to-machine (M2M) communications with low latency of 1ms for wireless control loops to be used for coordinating autonomous vehicles or new production processes in Industry 4.0 factories.
- Massive machine type communications (mMTC): support a very large number of devices with a relatively low volume of non-delay sensitive data. Devices are required to be low-cost and have a long battery life. Typical uses cases are Internet-of-Things (IoT) scenarios or sensor networks.
5G networks will require a strongly improved energy efficient by further reducing cell sizes as well as increasing spectral efficiency up to 30bps/Hz using massive MIMO systems. New spectral band will be enabled using millimeter wave frequencies above 28GHz requiring new chip designs and signal processing algorithms at the transmitter and receiver side.
The research at AIT focuses on two fields as described below: