NEUF
LTE-Advanced Enhancements using Femtocells
Descrição

The project will take LTE-Advanced as a reference and will explore possible enhancements to the support of femtocells. It will use mechanisms to reduce the interference-limited transmission with full frequency reuse. These include CQI, QoS- and interference- aware scheduling and RRM with user-grouping, coordinated RRM, exploiting the spatial degrees of freedoms from multi-antenna systems and OFDMA through MIMO and beam forming techniques, active interference management and CoMP transmission, as well as carrier aggregation for multi-band transmission.
New technologies like aggregate carriers and cooperative multi antennas antenna systems as part of LTE-Advanced systems will be evaluated with respect to their ability to enhance the performance of networked femtocells based on LTE-A. The availability of Positioning information, can help provide the network with information on the terminal positions and, with this, to adapt the transmission scheme to the terminal avoiding worst channel conditions.
At the network layer, considerable research and development has been recently focused on the use of small cellular base stations. However, those cells have only been considered as mere extensions to cellular networks, allowing the enlargement of service coverage. The use of these small cells, mostly deployed by consumers, has not yet been fully explored. There are many services and protocols in the network that could benefit on the scattering of this kind of cell deployment. This project will exploit the opportunities that small cells will bring to improvement on the network architecture. The aim is to a achieve a much richer small cell, that will provide better support for several services and protocols that could take advantage on a distributed architecture and/or context ware and localized information.

Femtocells can have many benefits for both operators and users. From an operational or deployment perspective however their integration into the network is quite hard. From the user perspective the deployment of those cells has to be transparent, therefore support for zero-configuration networking is a requirement. This project will exploit network access characteristics of being self-organized inherent to the SON specification of LTE-A
The project will include specific activities to study mobility management, considering its implication network efficiency. The aim will be to support simultaneous data flows from LTE-A and other access systems (WLAN, WiMAX), provide policies for guiding and configuring the UE IP flow routing via different access systems, enable the dynamic movement of IP flows between access systems (offloading) and support handovers when the UE handles multiple flows. Cross-layer Media Independent Handovers standardization efforts have been done on several working groups in IEEE, IETF and 3GPP. However the implementation of those media independent handovers has not yet fully considered the use of Femtocells in the network. For instance, in IEEE 802.21 access selection is out o scope of the standard, which is simply an integration enabler for multi-access radio access technologies. Femtocells will be used to support handover decisions, by implementing media independent services. Localized information and their use for supporting handovers will be considered in detail. In addition, the project will work on the use of Femtocells on the implementation of decision entities and handover policy management. Simultaneous multi-Access, multi-homing is another novel aspect to consider in femtocells. In particular this project will go beyond “3G complemented by 3rd party access” scenarios, paving the ways for true multi-access, multi-homing where each flow can influence the access selection process.
The project will take advantage of Femtocells in multiple ways. The project will exploit the fine-grained context awareness made possible by the use of Femtocells in order to support the provision of content rich services by increasing the user’s Quality of Experience (QoE).

Parceiros Internos
Centro de Investigação Grupo de Investigação Papel no Projeto Data de Início Data de Fim
IT-Iscte Grupo de Sistemas de Rádio Parceiro 2012-03-01 2014-03-01
Parceiros Externos

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Equipa de Projeto
Nome Afiliação Papel no Projeto Data de Início Data de Fim
Rui Neto Marinheiro Professor Associado (DCTI); Investigador Integrado (IT-Iscte); Coordenador Local 2012-03-01 2014-03-01
Américo Manuel Carapeto Correia Professor Catedrático (DCTI); Investigador Integrado (IT-Iscte); Investigador 2012-03-01 2014-03-01
João Carlos Marques Silva Professor Auxiliar (DCTI); Investigador Integrado (ISTAR-Iscte); Investigador 2012-03-01 2014-03-01
José André Rocha Sá Moura Professor Auxiliar (DCTI); Investigador Integrado (IT-Iscte); Investigador 2012-03-01 2014-03-01
Nuno Manuel Branco Souto Professor Associado (com Agregação) (DCTI); Investigador Integrado (IT-Iscte); Investigador 2012-03-01 2014-03-01
Pedro Joaquim Amaro Sebastião Professor Associado (com Agregação) (DCTI); Investigador Integrado (IT-Iscte); Investigador 2012-03-01 2014-03-01
Financiamentos do Projeto
Código/Referência DOI do Financiamento Tipo de Financiamento Programa de Financiamento Valor Financiado (Global) Valor Financiado (Local) Data de Início Data de Fim
PTDC/EEA-TEL/120666/2010 -- Prémio FCT - PTDC/EEA-TEL - Portugal 1 1 2012-03-01 2014-03-01
Outputs (Publicações)
Ano Tipo de publicação Referência Completa
2017 Artigo em revista científica Gonçalves, L., Sebastião, P., Souto, N. & Correia, A. (2017). On the impact of user segmentation and behaviour analysis over traffic generation in beyond 4G networks. Transactions on Emerging Telecommunications Technologies. 28 (1)
2015 Artigo em revista científica Souto, N., Dinis, R., Correia, A. & Reis, C. (2015). Interference-aware iterative block decision feedback equalizer for single-carrier transmission. IEEE Transactions on Vehicular Technology. 64 (7), 3316-3321
2014 Publicação em atas de evento científico Luz, A., Cercas, F., Sebastião, P. & Dinis, R. (2014). On the design of spreading sequences for CDMA systems with nonlinear OQPSK-type modulations. In Proceedings of the 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic Systems (VITAE). Aalborg: IEEE.
2014 Publicação em atas de evento científico Gonçalves, L., Sebastião, P., Souto, N. & Correia, A. (2014). Subscriber group behavioral analysis for data-centric service consumption beyond LTE-Advanced. In 2014 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace & Electronic Systems (VITAE). Aalborg, Denmark: IEEE.
2014 Publicação em atas de evento científico Gonçalves, L. C., Sebastião, P., Souto, N. & Correia, A. (2014). Addressing cell edge performance by extending ANDSF and Inter-RAT UE steering. In 2014 11th International Symposium on Wireless Communications Systems (ISWCS). (pp. 465-469). Barcelona: IEEE.
2013 Artigo em revista científica Silva, J., Marinheiro, R., Moura, J. & Almeida, J. (2013). Differentiated classes of service and flow management using an hybrid broker. ACEEE International Journal on Communication. 4 (2), 13-22
2013 Publicação em atas de evento científico Feitor, B., Assunção, P., Soares, J., Cruz, L. A. & Marinheiro, R. N. (2013). Objective quality prediction model for lost frames in 3D video over TS. In 2013 IEEE International Conference on Communications Workshops (ICC). (pp. 622-625). Budapest: IEEE.
2013 Publicação em atas de evento científico Almeida, J., Marinheiro, R., Silva, J. & Moura, J. (2013). A framework for QoE measurements of real­time scalable video coding streaming using conventional servers and clients. In Dr. Deshmukh Ratnadeep and Dr. Vinu V Das (Ed.), Third International Conference on Advances in Information Technology and Mobile Communication - AIM. (pp. 85-90). Bangalore: ACEE and Elsevier.
2012 Publicação em atas de evento científico Coucelo, J. P., Marinheiro, R. N., Silva, J. C. & Moura, J. A. (2012). WLAN-UMTS integration to optimize MBMS provision. In 2nd Mosharaka International Conference on Communications and Signal Processing. (pp. 19-23). Barcelona: Mosharaka for Research and Studies.
2012 Publicação em atas de evento científico Moura, J., Silva, J. & Marinheiro, R. N. (2012). A brokerage system for enhancing wireless access. In 2nd Mosharaka International Conference on Communications and Signal Processing. Barcelona: Mosharaka for Research and Studies.
2012 Publicação em atas de evento científico Rendeiro, J. M. A., Marinheiro, R. N., Moura, J. A. & Silva, J. C. (2012). An adaptive management proposal for optimizing the performance of a virtualized computing environment. In 2nd Mosharaka International Conference on Communications and Signal Processing. Barcelona: Mosharaka for Research and Studies.
Dados de Investigação Relacionados

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Referências nos Media Relacionadas

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Outputs (Outros)

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Ficheiros do projeto

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LTE-Advanced Enhancements using Femtocells
2012-03-01
2014-12-31