Signal Processing and Communications Group

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Femtocell-based netwoRk Enhancement by intErference management and coorDination of infOrmation for seaMless connectivity

Acronym:    FREEDOM
Code:    FP7-ICT-2009-4-248891
Funder:    European Commission
Start date:    2010 January 1st
End date:    2011 December 31st
Web site:    http://www.ict-freedom.eu

SPCOM Participants:    Adrian Agustin de Dios, Olga Muñoz Medina, Adriano Pastore, Javier Rodríguez Fonollosa and Josep Vidal Manzano
SPCOM Responsible:    Josep Vidal Manzano

Summary

Currently, femtocells and macrocells are seen as isolated networks, competing for the resources available in the common spectrum band, at the cost of injecting interference to the whole system. FREEDOM project will face key technical and industrial concerns about the foreseen mid-term massive deployment of femtocells by adopting a new approach based on cooperative/coordination paradigms, enabled by the quality-limited ISP backhaul link. The project will not disregard the approach of isolated networks because it is met when there is not enough backhaul link connecting the femtocells and macrocell. In order to guarantee a strong focus and efficiency, FREEDOM focuses on: advanced interference-aware cooperative PHY techniques; improvement of the control plane procedures for seamless connectivity, system-level evaluation and hardware demonstrator of the proposed femto-based network architecture.

Journal publications

[1] S. Lagén, A. Agustin de Dios and J. Vidal, "Network-MIMO for downlink in-band relay transmissions", EURASIP Journal on Wireless Communications and Networking, January 2013. 


Conference publications

[1] O. Muñoz Medina, A. Agustin de Dios and J. Vidal, "MCS and Sub-band Selection for Downlink Interference Coordination in LTE-A Femtocells", IEEE Vehicular Technology Conference Fall, Vehicular Technology Conference, VTC-Fall 2012, September 2012, September 2012.

[2] A. Agustin de Dios, J. Vidal, O. Muñoz Medina and J. R. Fonollosa, "Decentralized Weighted Sum Rate Maximization in MIMO-OFDMA Femtocell Networks", IEEE Global Communications Conference, The Second GlobeCom Workshop on Femtocell Networks, December 2011.

[3] O. Muñoz Medina, J. Vidal, A. Agustin de Dios, A. Pascual Iserte and S. Barbarossa, "Coordinated MIMO Precoding for Power Minimization in Femtocell Systems", IEEE Global Communications Conference, The Second GlobeCom Workshop on Femtocell Networks, December 2011, pp. 191 - 196.

[4] A. Agustin de Dios and J. Vidal, "Weighted Sum Rate Maximization for the MIMO X Channel through MMSE Precoding", IEEE International Symposium on Information Theory, August 2011, pp. 1 - 5.

[5] A. Agustin de Dios, J. Vidal, S. Lagén and E. Valera, "Network MIMO for Downlink in-band relay transmissions with relaying phases of fixed duration", European Signal Processing Conference, August 2011.

[6] O. Muñoz Medina, A. Pascual Iserte, Pau Baquero and J. Vidal, "Preemption and QoS Management Algorithms for Coordinated and Uncoordinated Base Stations", IEEE International Workshop on Signal Processing Advances for Wireless Communications, June 2011, pp. 486 - 490.

[7] A. Agustin de Dios and J. Vidal, "Improved Interference Alignment Precoding for the MIMO X Channel", IEEE International Conference on Communications, June 2011, pp. 1 - 5.

[8] A. Agustin de Dios, J. Vidal and O. Muñoz Medina, "Interference Pricing for Self-organisation in OFDMA Femtocell Networks", ICT Summit on Mobile and Wireless Communications, Future Network and Mobile Summit 2011 Conference Proceedings, June 2011, pp. 1 - 8.

[9] J. Vidal, A. Agustin de Dios, S. Lagén, E. Valera, O. Muñoz Medina, A. Garcia Armada and M. Sánchez Fernández, "Network-MIMO Backhauling for QoS-constrained Relay Transmissions", IEEE International Conference on Acoustics, Speech and Signal Processing, May 2011.

Patents

[1] J. R. Fonollosa, A. Agustin de Dios, O. Muñoz Medina and J. Vidal, "Methods and systems for decentralized managing of neighboring femtocells OEPM" December 2014.

[2] J. R. Fonollosa, A. Agustin de Dios, O. Muñoz Medina and J. Vidal, "Methods and systems for decentralized managing of neighboring femtocells USPTO" August 2013.