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TC Lab

Telecommunications Lab

Telecommunication is one of the fastest-evolving technology domains and has fundamentally changed our lives. On the one hand, telecommunication has become ubiquitous, and on the other hand, communication has evolved from textual over voice towards visual communication—natural for visual beings like us but challenging technologically.

Consequently, the Telecommunications Lab at Saarland University has two research foci: The future of video content and technologies to transmit such content wirelessly even under high mobility, e.g., in automotive applications. In both research areas, artificial intelligence in the form of deep neural networks plays an increasingly important role.

News #

Winterterm 2023/24
For the winterterm 2023/24 we have significantly revised the content and format of our lectures.
To make connected IoT devices resilient against power or system failures we introduce a path to fully transactional network stacks.
Saarland Intel Joint Program
We have supported setting up a large collaborative research initiative with the State of Saarland and Intel.
5G Campus Network
Since Summer 2023 we operate a 5G Campus Network, serving the north-eastern part of the campus.

Light Field Capturing and Processing #

For 200 years, images have been two-dimensional arrays of colored pixels. Consequently, video has just been a fast enough sequence of such images. Today, all dimensions evolve at an unprecedented speed: The resolution of images, the number of images per second, the dynamic range, and the color depth of the pixels have increased the data by order(s) of magnitude. And even increasing the number of cameras to four or even more is common in smartphones.

Such multi-camera or light field arrays are at the forefront of research on how visual content wil be generated and processed in the future.

Latency-, Resilience- and Energy-aware Transmission #

Everything over IP and IP over Everything—Not only Wi-Fi but also cellular networks (5G and beyond) solely rely on IP (the Internet Protocol) for content encapsulation. But the Internet has primarily been designed for reliable data transfer. It cannot deal with loss-tolerant traffic, and it typically doesn’t have any notion of latency or timing.

With the Predictably Reliable Realtime Transport (PRRT) the Telecommunications Lab introduced an IP-based transport protocol enabling latency-, resilience- and energy-awareness. Applications can state their requirements and the transport layer’s error handling is adapted on the fly—even on embedded, resource-constraint devices—to meet those requirements and transmit near the information-theoratical limit.
We also operate the 5G Campus Network at Saarland University.

Teaching #

The Telecommunications Lab offers Core- and Advanced-Lectures on Digital Transmission & Signal Processing, on 5G and on Internet Transport. These lectures are complemented by Seminars and Hands on-Modules like Hands on Networking (HON).