GROW News Jan/2015

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Vol. 10, No. 1, Jan 2015


In this issue:

1. Under the spotlight

2. People

3. Publications

4. Conferences, Meetings & Seminars

5. Projects

1. Under the spotlight

Bringing your attention to a matter in this issue of the Newsletter

The goal in the virtualisation of radio resources is to serve multiple Virtual Network Operators (VNOs) over the same physical infrastructure, while offering isolation and flexibility in addition to network element abstraction and multi-RAT (Radio Access Technology) support. Instead of splitting the available radio resources among VNOs, they are aggregated and jointly manage by a higher level entity. VNOs request wireless capacity from a set of physical network providers to serve their subscribers, thus, not having to deal with the physical infrastructure, but rather only with the required capacity. This approach offers pay-as-you-go Connectivity-as-a-Service to VNOs, while enabling new business models for network operators and infrastructure providers. As illustrated in ‎the figure, the key concept of Virtual RAN (VRAN) corresponds to the one of Virtual Machines (VMs) in computing. In RAN virtualisation, in contrast to RAN sharing, the physical infrastructure is not transparent to the clients. By means of isolation, services with different protocols, algorithms, and requirements for quality of service can be offered over the same physical infrastructure.


Sina Khatibi


2. People

Information about incoming and outgoing people, besides other related news.

GROW is receiving one more member. Since mid-January, Andrea Marrota, an M.Sc. Student from University of L’Aquila, Italy, is working in his thesis. We wish him good luck.

GROW has hosted Dr. Slawomir J. Ambroziak (Gdansk University of Technology, Gdansk, Poland), in a COST IC1004 Short Term Scientific Mission, in the period of Jan. 12th to 16th. This stay, resulting from an existing collaboration, produced very interesting results.


3. Publications

Information about publications, at both national and international levels, concerning papers submitted, accepted, or published in the period.

Luísa Caeiro, Filipe D. Cardoso and Luis M. Correia, “OnDemand Virtual Radio Resource Allocation for

Wireless Access”, Wireless Personal Communications, accepted Jan. 2015

Lúcio Ferreira, Navid Nikaein, Eryk Shiller, Desislava Dimitrova, Islam Alyafawi, Sina Khatibi, Luis M. Correia, Dominique Pichon, Alexander Georgiev and André Gomes, “RAN-as-a-Service MCN architecture”, in Proc. of Innovation in the Cloud Workshop, Lisbon, Portugal, Jan. 2015

Sina Khatibi and Luis M. Correia, The Effect of Channel Quality on Virtual Radio Resource Management, Technical Report TD-15-12034, COST IC1004, Dublin, Ireland, Jan. 2015


4. Conferences, Meetings & Seminars

List of Conferences, Meetings, Seminars, and other events held and attended during this period, and to be held the following month.


Daniel Sebastião, Mónica Branco

FAQtos Seminar at Salesianos de Lisboa, Lisboa, Portugal



Daniel Sebastião, Mónica Branco

FAQtos Seminar at Escola Secundária de Arouca, Arouca, Portugal



Carla Oliveira

FAQtos Seminar at IST, Lisboa, Portugal



Sina Khatibi, Luis M. Correia

NEWCOM# meeting, Athens, Greece



Ricardo Gameiro, “Performance comparison of voice communications between VoLTE and UMTS/GSM”

Miguel Sá, “Performance Analysis of Software Defined Networks in LTE-A”

Carlos Martins, “Analysis of data services performance in UMTS networks using data analytics”

João Pires, “LTE Fixed to Mobile Subscribers QoE evaluation”

GROWing meeting



Luis M. Correia, “The Effect of Channel Quality on Virtual Radio Resource Management

COST IC1004 meeting, Dublin, Ireland



Lucio Ferreira, “RAN-as-a-Service MCN architecture”

Sina Khatibi

Innovation in the Cloud Workshop, Lisboa, Portugal



Mónica Branco

FAQtos Seminar at EPET, Lisboa, Portugal



Luis M. Correia

DFG HEAC @ T.U. Dresden review, Dresden, Germany



Rodrigo Santos, “Impact of FM Broadcasting Signals on Aeronautical Radionavigation”

Marco Castanho, “Analysis and optimisation of video transmission in LTE networks”

Pedro Ganço, “Load Balancing in Heterogeneous Networks with LTE”

Duarte Doutor, “Load Balancing between LTE and WiFi”

Gonçalo Fernandes, “Load Balancing via inter-frequency handovers in LTE networks”

GROWing meeting



Daniel Sebastião, Mónica Branco

FAQtos Seminar at Escola Profissional de Pombal, Pombal, Portugal



Luis M. Correia

LEXNET project review, Brussels, Belgium



Luis M. Correia

NEWCOM# project review, Brussels, Belgium



Bruno Pires, “Exclusion Regions for LTE base stations in heterogeneous cell structures”

Vasco Simões, “Assessment of exposure for LTE mobile terminals in a heterogeneous usage”

GROWing meeting



Daniel Sebastião, Mónica Branco

FAQtos Seminar at Colégio de São Miguel, Fátima, Portugal


5. Projects

News about the several projects in which GROW is involved.

COST IC1004 –

A contribution entitled “Virtualised and Cloud based Architectures” was edited for the COST book Cooperative Radio Communications for Green Smart Environments. The paper presented at the COST meeting was chosen as selected scientific topic for the 10th newsletter. Sina Khatibi is going to submit the abstract version of the paper for the 10th project Newsletter. Slawomir J. Ambroziak (Gdansk University of Technology, Gdansk, Poland), was hosted in GROW under a Short Term Scientific Mission, for joint work in Body Area Networks.



A report is being prepared on SAR simulations for a tablet usage, and work is starting concerning SAR simulations with smart glasses, within WP2. Concerning WP5, OPNET simulations on optimisation of locations for network topologies are already finished; work is now progressing on the definition of a cost function taking EMF as a KPI for network management/performance analysis into account. The New Work Item on “Development of a methodology on day to day assessment of EMF exposure to the population” that was proposed to CENELEC was accepted for discussion.



Work is being done on the implementation of VRRM in the OAI LTE base station emulator, as well as on the integration of traffic scenarios. A talk on RANaaS and a demo entitled “Capacity-as-a-Service” were given in the Innovation on the Cloud Workshop, organised by FP7 MOBIZZ project (, an event congregating several FP7 projects.



Sina Khatibi presented the work “Optimisation Approaches for Virtual Heterogeneous Networks”, based on the latest achievement in JRA1.1.2.2 at the project meeting.


FAQtos –

The 2015 edition of Prémio FAQtos has been ongoing, with the 59 groups scheduled to deliver their intermediate report by February 6th. Continuous monitoring of EMFs was launched in Valongo, with 5 monitoring stations, with 1 further station installed in Felgueiras. Some seminarswere held on some schools during January, with some more already scheduled for February.


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