SPEED-5G at CLEEN 2016 workshop in Grenoble
SPEED-5G had an active role in the Fourth International Workshop on Cloud Technologies and Energy Efficiency in Mobile Communication Networks (CLEEN 2016), which took place on 31 May 2016 in Grenoble. Other supporting projects were 5G NORMA and FLEX5GWARE. The workshop was part of the 11th EAI International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM).
The last decades brought an exponential increase in mobile traffic volume. This will continue and a 1,000-fold increase by 2020 has been forecasted. Hence, mobile communication networks and user behaviours are permanently evolving. For instance, heterogeneous networks, i.e. macro-cellular networks complemented by dense small-cell deployments, promise to provide the required data rates through an increased spatial utilisation of the spectrum.
Due to strong inter-cell interference, heterogeneous networks will require a high degree of coordination as offered by centralised processing. Furthermore, cloud-processing has been established as a way to scale computational resources to centralize data and processing towards data centres, and to exploit computational diversity.
Several presentations at the workshop addressed the issues mentioned above. First, SPEED-5G Project Manager Uwe Herzog from Eurescom gave an introduction to the project. In a second presentation from SPEED-5G, Benoit Miscopein from CEA spoke about “Dynamic spectrum allocation and energy efficiency in 5G systems”. This presentation gave an overview on the SPEED-5G activities and current ideas related to the workshop topics, i.e. energy efficiency and cloud hosting.
The SPEED-5G architectural concept is built upon concepts such as NFV, SDN and slicing, and hosting of network functions in the cloud will thus be an element that can contribute to efficient use of resources. The extended Dynamic Spectrum Allocation (eDSA) concept which SPEED-5G is developing will enable resource management with three degrees of freedom: densification, rationalized traffic allocation over heterogeneous wireless technologies, and better load balancing across available spectrum. This is thus considered a powerful technique to address also the energy-efficiency aspect.
To give an example, in a situation where several radio access technologies (RAT) are available at a user’s place, the 5G system can choose the RAT to be used also under the aspect of energy efficiency. This could not only save energy and valuable resources in the network, but also save energy on the user terminal leading to longer battery lifetimes.
The workshop concluded with a panel discussion in which SPEED-5G was again represented by Uwe Herzog. The panel discussed various questions including:
- How are R&D projects exploring novel concepts to allow for flexibly centralised radio access networks using cloud processing based on open IT platforms?
- What about energy-efficiency goals and the need for long-term sustainability of network infrastructure and devices?
- What is the role of MEC (Mobile Edge Computing) in this context?
- The path toward CRAN and virtualization is driven by a better infrastructure efficiency and costs savings. What about the next challenges and future network evolution focused on energy efficiency and cost-effectiveness?
Participation to the workshop has been a good opportunity for SPEED-5G to exchange views and disseminate project ideas with a targeted audience of experts.
Workshop website: http://crowncom.org/2016/show/technical-session#ws_cleen