Ciência-IUL    Autores    Pedro Joaquim Amaro Sebastião    Projetos de Investigação
Pedro Joaquim Amaro Sebastião
217650588 (Ext. 220869)
Gabinete D6.37
Cacifo 213
Projetos de Investigação
New RAN TEchniques for 5G UltrA-dense Mobile networks
In TeamUp5G we believe that motivation from involvement and engagement is key to learning. We want to place creative young researchers in front of the real world, enabling them to work on real-life technical issues, working across multiple European countries and organizations, presenting at workshops in front of industrial users/stakeholders, and becoming involved in standardization activities. We also want to provide them with communications skills, the ability to work in groups and an understanding of integrity and ethics in research. The project focus is ultra-dense small cell systems as an important component in future heterogeneous 5G networks (commercial deployment in 2020) and beyond. TeamUp5G considers aspects such as enhanced multi-antenna techniques, efficient backhaul/fronthaul, massive MIMO, communications in the millimetre-wave bands and visible light communications, as well as spectrum sharing and aggregation to enhance system capacity, decrease delay and energy consumption, and improve overall service quality. The research team of 15 young researches supervised by committed experts from the industry and academia will advance the state of the art with the design of novel physical/link/medium access control algorithms and protocols to enhance capacity and user satisfaction, new dynamic spectrum management, opportunistic optimisation of radio resources and cognitive radio techniques, together with self-organization capabilities, with different levels of collaboration, and techniques and methodologies to save energy. Both mobile broadband and internet of things applications and traffic will be harmonised. The new developed techniques will be analysed by simulation and prototyping and some show-cases (immersive video, drones) will be developed to illustrate the novelty and applicability of our ideas. The consortium will train the young researchers on how to contribute and will actively participate in the activities of standardization bodies.
Informação do Projeto
2019-01-01
2022-12-01
Parceiros do Projeto
Satellite Ground Station for Study and Development of Radio Communications
This project aims at building a satellite ground station at the Ku band that can be remotely controlled and accessed through a dedicated server to all authorized users using a simple web browser connected to the internet anywhere in the world. Authorized users can request and collect data (telemetry, images, etc) from its database for post-processing. This equipment can be used for a great variety of experiments not previously possible at this location and can be an important factor to increase the cooperation amongst national and international researchers and institutions, namely with ESA. Its location and features are unique and can be of strategic importance for the development of national research and industry in this field.
Informação do Projeto
2018-10-10
2018-10-10
Parceiros do Projeto
Carrier Aggregation between Licensed Exclusive and Licensed Shared Access Frequency Bands in Heterogeneous Networks with Small Cells
To provide a solution towards meeting new and ever more stringent end-user requirements, mobile stakeholders are preparing the 5G technology of mobile broadband networking. 5G will be characterized by ultra-high traffic volume density, ultra-high connection density or ultra-high mobility, moving from a cell centric to a user-centric technology.This research explores the Carrier Aggregation technique to obtain high spectral efficiency, through the massification of small cells (SCs), together with new network technologies like C-RAN. Scenarios with exclusive spectrum access and spectrum sharing will be explored. Spectrum sharing assumes that two or more mobile operators/carriers have dedicated spectrum for macro cellular layer while SCs will use exclusive shared spectrum (by paying a fee) or share the access to non-licensed spectrum in an opportunist manner. Both terrestrial cellular scenarios and HetNets with drones small cells will be investigated, and some tests will be done with programmable electronic envisaging demonstrating the concept in real environments. Entrepreneurship is also a target and training will be provided in the venues of the CONQUEST Workshops. Cost/revenue optimization is one of the final goals of the research.IT will contribute with analytical formulations, simulation, carrier aggregation, inclusion of spectrum sharing, hardware testing in the ORCIP platform (an FCT infrastructure recently approved, which will provide equipment and measurement instruments for testing, as well as support for real operation of the HetNet infrastructure, http://www.orcip.pt), design and implementation of the drones small cells and cost/revenue optimization, entrepreneurship and business strategies. IT will also provide the required interactions to PDMFC, the Portuguese SME that is interested in exploring the technology.
Informação do Projeto
2018-09-01
2019-12-31
Parceiros do Projeto
Remote Piloted Semi-Autonomous Aerial Surveillance System Using Terrestrial Wireless Networks
The main objective of SAAS is to develop an UAV remote control system that is mostly independent of a specific vehicle model or design and that makes use of the available terrestrial wireless networks. The individual challenges and objectives to be addressed are:• Real-Time Video Transmission and Control using Terrestrial Wireless Networks: Investigate the possibility of transmitting real time video and control commands with adequate quality for a pilot to control and make decisions on the vehicle course using the available radio networks (GSM, UMTS, HSDPA, Wi-Fi, LTE).• Semi-autonomous Flight Control: Develop autonomous control capabilities for the aircraft to perform its self-rescue in the case of loss of radio connection and that can also allow a reduced piloting workload.• Remote Visualization and Control Application: Implement an application for tablet PCs that enables the visualization of the video captured by the aircraft cameras together with other telemetry information and allows the pilot to command the aircraft (either using the touchscreen, the accelerometers or an additional attached joystick).• Prototype Implementation and Flight Tests: Implement a prototype using a small rotary-wing aircraft (possibly a tricopter/quadcopter) and evaluate the performance in terms of video reception, control, and autonomy capability.
Informação do Projeto
2012-03-01
2014-04-01
Parceiros do Projeto
LTE-Advanced Enhancements using Femtocells
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 ...
Informação do Projeto
2012-03-01
2014-03-01
Parceiros do Projeto
Mobile IP for Broadband Wireless Metropolitan Area Networks
Main Objective: This applied research project intends to design or plan fixed/portable and mobile Wimax (Worldwide Interoperability for Microwave Access) WMANs (Wireless Metropolitan Area Networks), pioneering implemented in Portugal. Besides the benefits of its operation in the context of university, hospital and urban environments it will be very useful for demonstration and research purposes.The project involves five main tasks:1-Design and Development of IEEE 802.16 Microwave Links for Fixed/Portable Communications. 2- Planning of a Cellular IEEE802.16e for Mobility Support. 3- Network Architectures for Interoperability and Mobile IP between Wifi and WiMax networks. 4- Security for IEEE 802.16. 5-Multimedia Service and Applications for Mobile Platforms. Our methodologies will be based on detailed planning, as well as network implementation, demonstration and validation. Measurements will be performed to evaluate QoS, and help both the dimensioning and the optimisation processes. THE FINAL WORKSHOP WILL BE HELD ON THE 27th SEPTEMBER IN IT/ISCTE, LISBON, PORTUGAL
Informação do Projeto
2005-06-01
2007-10-01
Parceiros do Projeto
Broadcasting and Multicasting Over Enhanced UMTS Mobile Broadband Networks
B-BONE main objective is to further enhance UMTS capacity, transmission rates, RAN and Core network functionalities, considering both FDD and TDD modes, so as to accommodate digital broadcasting/multicasting (multimedia) type services.
Informação do Projeto
2004-02-01
2006-06-30
Parceiros do Projeto