Ultra Reliable Communication via Network Coded Cooperation NCC

Whether Industry 4.0, smart flow of goods or networked mobility: Digitization requires a lot of communication in networked systems, especially wirelessly networked, embedded, electronic systems - wherever mobility, flexibility or retrofitting in an existing environment are requirements.

At the application level, the requirements for the level of detail in digitization and for data quality continue to grow. Data-driven approaches such as learning systems or AI are also dependent on huge amounts of data. As a result, more and more data is generated that, in wireless systems, has to be transmitted over a shared radio resource.

Talk to our experts about the possibilities of improving your radio system through coding processes.

 

Graph that shows the minimization of packet losses with network coded cooperation
© Fraunhofer IIS/Pachl

With many mobile participants / radio sensors or high requirements in terms of latency or reliability, problems quickly arise in transmitting all data with sufficient data quality due to the limited radio, energy and processing resources.

Today's communication networks benefit from powerful error correction procedures. We have been using channel coding methods such as Reed-Solomon-Codes or Turbo-Codes for many years.

Network Coded Cooperation, as a network-based coding method, has the potential to reduce the need for communication in the wireless network and, at the same time  increase robustness. There is also the possibility that the individual radio node manages with a lower transmission power or that antenna diversity can be dispensed with, because this can be compensated for through the cooperation.

 

 

 

 

 

Use of Network Coded Cooperation

Network Coded Cooperation is already used at Fraunhofer IIS for some technologies:

Ultra reliable Industrial Network
© Fraunhofer IIS/Pachl
Drahtlose Echtzeitkommunikation bei höchster Zuverlässigkeit.

UWIN – Ultra reliable Wireless Industrial Network

Wireless real-time communication with maximum reliability

In industrial automation systems, some of the sensors and actuators as well as other automation components are typically located on moving subsystems. Tools on robot arms, slide tracks as well as rotary and coordinate tables are examples of such sub-systems, for whose control a connection with very short cycle times in the single-digit millisecond range to the higher-level control is necessary. The cable drag chains, rotary feedthroughs and sliding contacts used today for this purpose have numerous disadvantages, such as susceptibility to wear, high weight, limited expandability or restrictions on mobility.

To solve this problem, Fraunhofer IIS is developing the radio technology "Ultra reliable Wireless Industrial Network" (UWIN), which can be used as a wireless extension or as a replacement for wired field buses. Compared to today's wireless technologies, this enables real-time signal transmission with extremely short latency times and maximum reliability.

 

Learn more about UWIN

 

WSN – Wireless Sensor Networks

Meshed radio networks

The collection of distributed sensor values ​​in large-area installations is a common application for which meshed radio networks can be used. Established standards for wireless meshed radio networks (IEEE802.11s, Bluetooth® mesh) are based on a simple packet forwarding strategy, which is characterized by the fact that radio nodes forward data packets that are not addressed to them to neighboring radio nodes. Flooding effects can lead to problems with data throughput. Network Coded Cooperation offers the chance to increase reliability, data throughput and thus scalability.

 

Funktionsweise Wireless Sensor Networks
© Fraunhofer IIS/Pachl
Wireless Sensor Networks