Workshop on advanced backhauling technologies, impact of SDN and NFV

This workshop was focussed on the output from the SANSA and VITAL projects and consisted of two overview papers followed by an examination of the results, challenges, architectures from these research projects.

Maria Guta looked at combining the strength of satellite and terrestrial networks to deploy 5G. It was noted that 5G has to incorporate satellite technologies and a review of satellite technologies was given.

Dr. Anastasios Kourtis who participates in the VITAL project presented the impact of SDN and NFV implementation in the telecommunications industry. He considered the challenges posed to network operators by Over the Top (OTT) providers such as Netflix. He considered that NFV facilitates the deployment of new services, through the Virtual Network Function VNF, which is the executable code that permits this.

The role of converged satellite and terrestrial backhauling for 5G networks was examined by George Agapiou and Panagiotis Matzoros. The key question was how can satellite help provide commercially viable back hauling as it is dealt in SANSA project. 

Constantinos Papadias considered two strategies, when he described beam selection strategies for multiuser cellular networks with limited feedback. This affects the wireless access network and exploits multiuser diversity.


Key Components for a hybrid backhaul system were presented to Networld2020 Annual Event and General Assembly 2016 Brussels in 19/04/2016.

During last week took place the 8th Advanced Satellite Multimedia Systems Conference and the 14th Signal Processing for Space Communications Workshop (ASMS/SPSC2016) in Palma de Mallorca. This is a renowned conference in both industry and scientific communities which address the recent advances in satellite communications.

In this framework, SANSA co-organized jointly with VITAL project, a Special Track devoted to Hybrid Terrestrial Satellite Networking and Services. It was split in two sessions, one dedicated to SANSA activities, chaired by Constantinos Papadias (AIT), and the other to VITAL, chaired by Tinku Rasheed (Create-net). For SANSA, Georgios Ziaragkas (AVANTI), José Núñez (CTTC),   Constantinos Papadias (AIT) , and Ashkan Kalantari (University of Luxembourg), presented respectively: the SANSA use cases, scenarios and KPIs; the SANSA network architecture; antenna-assisted interference mitigation techniques; and resource allocation techniques. Therefore, a good overview of the major part of SANSA activities was given. The session terminated with a round table which counted also with the participation of Ana Pérez (CTTC), the SANSA Project Coordinator.

The session successfully concluded with an attendance of around 30 people and with very fruitful discussions on the domain of terrestrial–satellite integration.

Link to


The 10th European Conference on Antennas and Propagation will be held in Davos, Switzerland, on 10-15 April 2016. EuCAP is a world renowned conference on antenna topics that represents a good dissemination opportunity for antenna related activities that are being carried out within the SANSA project. In particular, SANSA activities will be presented in two sessions:
Xavier Artiga (CTTC) will present a poster entitled “Reflectarray Cell for Analog Row-Column Beam Scanning Control” at the Poster Session 4 on Wednesday, April 13. This paper proposes a novel reflectarray unit cell which enables the control of the reflectarray aperture through a row-column scheme, providing a potential reduction of control lines from N*M to N+M (for a reflectarray with N*M unit elements).
Marcus Grossmann (FRA) will present a paper entitled “Antenna Array Optimization Strategies for Robust Direction Finding” at a convened oral session on Monday, April 11. This paper focuses on the optimization of uniform circular antenna array structures equipped with analog combining networks for direction finding and beamforming applications. For such type of arrays, the specific choice of the combining matrix has a crucial impact on the effective radiation pattern and the sensitivity of beam steering and direction-of-arrival estimation. The paper provides a design framework for constructing the combining network which improves the performance of the array as well as design examples that demonstrate the effectiveness of the proposed approach.