Other research projects

Enhancement and Dimensioning of LTE Networks

In this project which is supported by an industrial partner, an enhanced transport protocol for the upcoming 4G mobile communication technology named Long Term Evolution (LTE) is developed and the LTE backhaul is dimensioned.

 

Multipath Transport Protocols

Modern communication devices often have more than one interface, e.g. Ethernet, WLAN and LTE. Legacy TCP connections can only use one interface at at given time, whereas Multipath TCP allows to use multiple interfaces both at the server as well as the client side and thus deploying different paths for the same connection, transparent for the application. In this project, two major issues are being addressed. On the one hand, Multipath TCP connections should behave fairly against legacy connections, which in the first place requires comprehensive formal fairness definitions which then can be mapped to Multipath TCP's congestion control. Besides the investigations with simulations and physical testbeds, an analytical model describing different fairness methods is also developed. The second major issue of the project is the scheduling required to deliver data over the different MPTCP sub-connections in an optimum way so that QoS metrics such as delay or throughput can be optimised. Since TCP is an end-to-end protocol, this scheduler is located in the communication endpoints and has to take its decisions based on end-to-end QoS measurements, however as an option, assistance by the network, e.g. informing the endpoint how much load should be applied to which interface, may also be considered.

The intelligent container

Linked intelligent objects in logistics

We develop new approaches and technologies for innovative logistic processes in our project since 2010. The focuses of the applications are transports of foods which are sensitive to ambience parameter. The new approaches have the goal to reduce losses caused by spoilage of transported goods. This will lead to additional values for the affected companies, generate more food safety for consumers and reduce pollution. The ‘Intelligent Container’ stands for novel transport systems with the ability to measure, analyze and to intervene during transports by truck, rail, ship or plane. The common used technologies for logistics provide just a limited monitoring of parameters like temperature or humidity. For example, in the most cases temperature is just measured at two points in containers or trailers. This is not suitable for quality monitoring of the entire load, because the food quality can be affected by even small temperature gradients. An autonomous analysis of the measured parameters and an assignment of the data the load and its quality is also not possible today. All in all, the potential of innovative sensor and communication technologies is not used in food logistics. Thus, the possibilities for an increase of the efficiency logistic process, to reduce the loss of foods and to lower the CO2 emission are not taped.

 

Further information is available on the project homepage or in this video.

NuPEx

User-centered development of broadband communication networks including Quality of Experience

 

Today's networks that often do not provide quality of service differentiation and their planning based only on an average data rate per subscriber, are not optimal and cannot meet the growing and future user requirements. In particular, the supply in the area remains below expectations and high costs.

 

It is necessary to consider the user behavior and expectations of the customer directly for efficient network expansion and the appropriate planning. Thus, the resources are more focused on specific needs and thus overall optimized delivery of services can be achieved in the area.

 

The requirements for the network expansion are derived partly from the measurable Quality of Service (QoS) in the network. This QoS cannot be converted directly into Quality of Experience (QoE), which determines the user satisfaction. It depends on the individual expectations and type of used services (e.g. chat, email, Internet browsing, Internet TV, interactive and online games) and the usage behavior (e.g. time of use, parallel use of services).

 

The project proposes to include service differentiation, Quality of Service (QoS) parameters and Quality of Experience (QoE) in the network planning phase to plan, dimension and optimize broadband communication networks with respect to their efficiency.

 

Further information is available here (external link).

 

SAIL

SAIL’s objective is the research and development of novel networking technologies using proof-of-concept prototypes to lead the way from current networks to the Network of the Future.  SAIL leverages state of the art architectures and technologies, extends them as needed, and integrates them using experimentally-driven research, producing interoperable prototypes to demonstrate utility for a set of concrete use-cases.  SAIL reduces costs for setting up, running, and combining networks, applications and services, increasing the efficiency of deployed resources (e.g., personnel, equipment and energy).

Further information is available here (external link).

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NuPEx

Intelligent Container

SAIL

 

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