Past projects

COMBO. Convergence of Fixed and Mobile Broadband Access/Aggregation Networks (ICT-FP7-317762)

COMBO aims to address the convergence of fixed and mobile networks combining: 1) optimal and seamless QoE for the end-user and 2) optimized network infrastructure in terms of increased performance, reduced cost


and energy consumption.

The work of the COMNET Division in COMBO focuses on:

  • WP2 Framework definition, architecture and evolution. Scenario definition, Key Performance Indicators, Use cases identification, Traffic Modeling.
  • WP4 Traffic and performance management. Energy-aware Radio Resource Management, Traffic Offloading techniques.
  • WP5 Techno-economic assessment. Assessment of the network energy consumption and costs
  • WP6 Functional development & experimental research activities. Design and development of a testbed with emulated LTE access, GMPLS aggregation and “light” EPC core network.

For more information on the project, please visit COMBO official webpage.


SCALE. Small Cell bAckhauL with backpressurE


The COMNET Division of the Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) and AVIAT Networks have signed an agreement aiming at providing optimal networking solutions for the mobile wireless backhaul. AVIAT Networks is a leader in wireless transmission systems, applying innovation and IP expertise to build the future mobile broadband networks. The COMNET Division of CTTC combines its expertise on both the data networking and cellular worlds to optimize the next generation mobile broadband networks.

The overall goal of the agreement is to study and define a set of network-level intelligent functions for 3G, 4G, and beyond 4G network deployments. Research activities involve the study of SON capabilities: a combination of self-configuration, self-healing and self-optimization functions in nodes at the network level. This automation of processes at the network level leads to rapid deployments as well as a decrease of manual errors, and operating costs.

In this context, the SON functions studied in this agreement aim at supporting network complexity, such as resource management, in an intelligent way. The challenge is to maintain excellent user experience, while reducing the CAPEX/OPEX cost requirements. To do this, the SON capabilities must be distributed, scalable, and agnostic to the wireless technology underneath.

SIUSAS – Sistema Inalambrico Ubicuo de Servicios de Acceso y Sensorizacion (Ubiquitous Wireless System for Access and Sensors Services)


The general objective of SIUSAS project is to research on the technologies enabling Smart Cities. In particular, the work is focused on the design and the implementation of a device in charge of transmitting information coming from the environment where it is installed (public transport systems, smart grids, environment protection and monitoring systems, security systems) using wireless networks in its surroundings (e.g., WiFi, WiMAX, 3G, LTE). The device will communicate independetly from the operator of the access networks and will perform transparent handovers among the different access technologies thanks to an integrated roaming-handover module.

The project is funded by CDTI (Centro para el Desarrollo Tecnico Industrial – Spanish Ministry of Economics and Competitiveness)

SYMBIOSIS – System-level studY for coping with MoBIle data grOwth in evolved cellular networkS and future Internet environmentS (TEC2011-29700-C02-01)

SYMBIOSIS mainly focuses on studying, conceiving, and evaluating network-level services (e.g., routing, mobility, global resource management) towards a more efficient operation of mobile broadband networks at a global scale. In particular, SYMBIOSIS aims:
  • To improve cellular network performance by having in mind the requirements posed by mobile data and how the mechanisms under study by the data networking community can help (e.g., overlay network service provisioning, distributed location management, self-organized interference management in dense uncontrolled deployments).
  • To put cellular networks into a global context and to study network schemes enabling their integration with other networks (using the same or different technologies). In this direction, we will explore schemes defined to solve critical Internet problems, such as routing scalability (e.g., LISP). This also includes ways of providing critical network-level services at a global scale (e.g., routing, mobility). Scenarios representing various degrees of integration will be evaluated.

This project is in collaboration with the CCABA group of Universitat Politècnica de Catalunya (UPC)



BeFEMTO. Broadband Evolved FEMTO Networks ICT-FP7-248523


BeFEMTO aims to research and develop evolved femtocell technologies, mainly focusing on the novel concepts of networked femtocells, femtocell as fixed relays in macrocells, and mobile femtocells. The scope and tangible results of BeFEMTO are (among others): 1) self-optimization techniques, 2) intelligent interference management, 3) cooperative networked femtocells, 4) mobile femtocells, and 6) validation of developed technologies using testbeds and simulation tools. More information available at:

The work of the IP Technologies Area of the CTTC in BeFEMTO focuses on:

  • WP2 (Use Cases, Requirements and System Architecture). Definition of System requirements, Key Performance Indicators, and Design of the network architecture for all-wireless networks of femtocells
  • WP5 (Femtocells Access Control, Networking, Mobility, and Network Management). Design of routing approaches and local mobility management strategies for all-wireless networks of femtocells, as well as their integration/interaction with the architecture defined by 3GPP.
  • WP6 (Integration & Proof of Concepts). Design and deployment of an all-wireless network of femtocells testbed. Evaluation of some of the concepts conceived in WP5.

A talk on BeFEMTO from the LTE World Summit in Barcelona that took place in May 2012. It presents a brief summary of the project and the contributions of the CTTC to BeFEMTO.

You might also be interested in watching the talks we gave during the Femtocells Winter School 2012.


FEM2SIP – Delivery of VoIP Services over Next Generation Networks


Information unavailable. Please contact VozTelecom Sistemas S.L.


TMA. Traffic Monitoring and Analysis (COST Action IC073)


This COST Action coordinates both Research Groups and Network Operators active in the field of Traffic Monitoring and Analysis, promoting the development of novel techniques and focusing the research efforts towards commonly recognized problems, thus driving the research towards real-world applications. More information available here


IPANEMA. Improving user exPerienced quAlity usiNg multiple wirEless interfaces siMultaneously And network coding


The improvement in the per-user capacity of next generation wireless access technologies is continuously trailing the ever increasing bandwidth requirements of mobile IP services. For this reason, complementary solutions are being investigated by the research community to fulfill the same requirements using existing wireless technologies. With this respect, a promising solution is to use multiple access technologies simultaneously in order to get an aggregated bandwidth that is sufficient to provide a satisfactory Quality of Experience (QoE) to the user. State-of-the-art solutions for the simultaneous use of multiple access links suffer from the delay dispersion problem. Coding the information to be sent over the multipaths at the source is a promising technique to address this problem. The project aims to design and implement a packet encoder/decoder pair to achieve better throughput/delay tradeoffs when compared with traditional routing-based solutions.

The project is in collaboration with the Cisco Research Center in San José (California, US).

ARTICO. Architecture enabling the autonomous opeRation of complex, heTerogeneous and dynamIC wireless netwOrks (TEC2008-06826/TEC)


Project ARTICO aims to carry out research on mobility management- and routing-related in managed as well as unmanaged wireless networks, and to study the implications of extending them to more complex hybrid networking scenarios that combine professionally managed legacy networks and self-managed all-wireless networks. ARTICO defines four major research goals:

  • Handling the heterogeneity of single-hop wireless access networks. Connection admission control and intelligent interface selection algorithms.
  • Efficient routing algorithms for multi-radio multi-channel multi-hop large-scale wireless networks.
  • Revisiting the above issues when combining next generation networks and self-organized wireless network into hybrid wireless networks.
  • Adaptation and extension of the EXTREME experimentation framework so as to evaluate most of the above concepts experimentally in three experimentation environments: 1) a controlled UMTS experimentation platform, 2) a Wireless Mesh Network deployment, and 3) an environment to test hybrid network scenarios.

All this work was carried out by the IP Technologies Area of the CTTC.


DESSERT. Distributed interface selection for seamless terminal mobility across wireless heterogeneous networks (Industrial – Cisco)


The research goal of the project is to study techniques for the provision of the information needed for a multi-interface mobile device to select the most appropriate network interface to send/receive its traffic at each moment of the communication as well as the definition of the interface selection algorithm itself. This project has been funded by an unrestricted gift by the Cisco Research Centre.

More details of the project can be found here

FREEDOM. Access and IP Technologies for mobility (Industrial – Orange)


The FREEDOM project encompasses the collaboration in different research areas of mobility (radio access, IP, spectrum management, etc.) to study future wireless communications networks, potential improvements for optimal network planning and management, and impact of mobile devices’ evolution in such networks.

More specifically, the work of the IP Technologies Area focused on two main topics, namely Voice over IP (VoIP) and Peer-to-Peer (P2P), which were evaluated from a networking perspective, that is, the support that the network should offer to these types o communications for optimal performance. Furthermore, these technologies were experimentally evaluated over the EXTREME Testbed, with particular emphasis on 3G-WLAN heterogeneous networks that also feature ad hoc networks

WIMSAT – Convergence of Wimax, IMS and Satellite (TSI-020301-2008-13)


The project deals with different aspects of the interworking between Wimax and Satellite (DVB-RNC) technologies and IP Multimedia Subsystem (IMS) concerning the delivery of the Next Generation Network services to users of the hybrid wimax-satellite network. More detailed information about the project is available here.

NEWCOM++. Network of Excellence in Wireless Communications++ (ICT 216715)


NEWCOM++ is European Network of Excellence addressing medium/long term, complex, interdisciplinary, fundamental research problems in the field of wireless networks, focused towards identifying, posing in the right modelling perspective, and at least partially characterizing the information-communication theoretical limits.

Its main objectives are:

  • To identify a selected set of scenarios
  • To define suitable performance measures that take into account the wireless channel nature
  • To perform a detailed analysis of the main theoretical results available
  • To evaluate information-theoretical bounds on the achievable performance.
  • To design and analyze transmit/receive algorithms and protocols in order to achieve those limits
  • To analyze implementation aspects of the above algorithms in flexible, energy-aware user terminals.
  • To output the major findings into an integrated simulation library.

and, as a result, to enhance the cooperation level among European researchers working in the field of mobile and wireless communications. More information available at:

DYNAMO. Dynamic Communication and Networks (COST Action 295)


The main objective of COST Action 295, “DYNAMO” is to provide foundations, models, algorithms, and general tools for dynamic communication networks. These new decision-support tools favour the study and the efficient design of applications for networks of decentralized interacting and evolving entities, experiencing possibly brutal modifications of their environments. DYNAMO integrates the state-of-the-art scientific knowledge from the fields of Algorithms, Discrete Mathematics, Distributed Computing, and Mathematical Optimization, relevant to dynamic communication networks, in order to develop decision-support network technologies. These sophisticated decision-support tools enables overcoming the increased complexity of questions induced by the dynamics of advanced decentralized systems. Among the main problems tackled by DYNAMO are: placement of equipment, spectrum assignment, bandwidth allocation, infrastructure design, and distributed systems design. This is aiming at helping optimizing the deployment and usage of high-end technology communication networks, like mobile networks, radio networks, cellular networks, satellite networks, ad-hoc networks, and sensors networks, as well as of societal-driven emerging information technologies, like the WWW, and P2P networks. More detailed information about the project is available here

WIP. An All-Wireless Mobile Network Architecture (IST-FP6 27402)


The goal of the WIP project was to study how far we could go in building a large-scale all-wireless network. Keywords of the project were: routing, mobility, communities, advanced wireless transmission, testbeds.

The work of the IP Technologies Area mainly focused on:

  • WP1 (Global Architecture). Definition of the WIP network architecture targeting large-scale wireless mesh networks, in particular, network infrastructure issues.
  • WP3 (Seamless Mobility). WIP mobility management architecture (location management) for large-scale wireless mesh networks developed in Click. Please, take a look at our work on distributed mobility management here.
  • WP4 (Applications, Experimentation, and Measurements). Design and deployment of a wireless mesh networking testbed fully integrated with the EXTREME Testbed framework. Experimental evaluation of the distributed location management scheme (VIMLOC) designed in WP3.

More information available at:

SGR. Suport als Grups de Recerca, “Grup de Tecnologies de les Comunicacions Ràdio” (Generalitat de Catalunya – SGR2005-00690)


The objective of the project was to study different aspects related to the lower layers of communications systems, giving special emphasis to the analysis, design, and demonstration of advanced wireless networks. The different communication aspects that were taken into account can be described as: modulation/coding, single and multi-antenna communications, microwave engineering, cooperative transmission, medium access control, radio resource management, scheduling, mobility management and network performance optimization of wireless networks. The latter two topics were dealt with by the IP Technologies Area of the CTTC.



PlaNetS. Platforms for Networked Service delivery (FIT-330225-2007-14)


PlaNetS intends to contribute to the overall goal of eEurope 2005, to provide cost effective broadband access to all European citizens. The broadband access will be based on a converged network unifying the current heterogeneous networks. The unification is expected to include also wireless access networks, cellular networks and WLAN. The converged network will be centred on the introduction of the next version of the Internet Protocol IPv6. PlaNetS will play a key role in this introduction. An IPv6 implementation scenario will be worked out and lab trials will be built up completely based on IPv6, including monitoring, remote control, automation, surveillance and related features.



U. Mohammed V. Integrated action with University Mohammed V – Agdal in Rabat


This project was an international cooperation action in which researchers from the IP Technologies Area of the CTTC taught a course on Mobility management and IPv6 to postgraduate students of the Mohammed V-Agdal University in Rabat (Morocco).



FEMTOCORE (Industrial)


Feasibility analysis of interworking architecture between femtocells and network of VozTelecom