Low Latency

Low-latency transmission over the wireless communication links is a major requirement to enable emerging use cases and future applications. In September 2015, the ITU-R proposed its vision for IMT for 2020 and beyond including low-latency. Also standardization bodies like 3GPP provided a feasibility study on new services. Among other things, the following use cases where mentioned: virtual presence, industrial control, tactile Internet, connected vehicles, industrial factory automation and bio-connectivity. In fact, wireless systems enabling low-latencies will be essential for a wide range of future applications.

Such applications will demand for end-to-end latency of a few milliseconds and even below. To meet these challenges, especially the physical layer and the medium access layer of wireless communication systems have to be enhanced. In particular, the digital signal processing time has to be reduced and the frame structure has to be adopted for low-latency packets.

The Fraunhofer Heinrich Hertz Institute provides solutions that enhance the physical and medium access layer to support low-latency transmission, addressing 5G in general and dedicated use cases in specific. In particular, we provide solutions for waveform and frame structure design of the wireless signal, and we develop protocols that are adapted to the characteristics of the wireless channel. In addition, we can use our own software defined radio platform to verify newly developed mechanisms and protocols.