#	Pagina
attuale pagina	/open-h2020/projects/205591/results.html

Report

Teaser, summary, work performed and final results

Periodic Reporting for period 1 - SECRET (SEcure Network Coding for Reduced Energy nexT generation Mobile Small cells)

Teaser

Summary

SECRET aims to research, design, implement and showcase a new networking topology that delivers ubiquitous mobile small cell access to support future emerging enhanced broadband services based on exploiting disruptive technologies such as network coding and cooperation in synergy with a security framework and energy-aware smart front-end. These small cell hotspots will form a wireless-network-of-mobile small cells, so that prosumers at the cell edge or in low coverage area can have access to high speed networking. This opens up new research challenges in terms of investigating new networking topologies, architectures, and transceivers that can provide a â€œstable connectionâ€ during the session, and attain the desired trade-off between energy saving, and cell throughput capability, whilst still maintaining QoS. The mobile small cells will be set-up against a backdrop of HetNets, considering other small cells (such as femto, pico, relay) and heterogeneous cells (WiFi hotspots, etc). The dense deployment of these cells and their coexistence are all important research challenges to be considered in SECRET.
SECRET will allow end-user to experience a plethora of 5G broadband services at low cost irrespective of the underlying communication infrastructure with reduced impact on mobile battery lifetime.
The overall objectives of the project can be defined as follows:
- New radio architectures for mobile small cells for reduced-cost high-speed and energy-efficient connectivity on demand
- Network Coded Cooperation for mobile small cells to ensure high error resiliency and efficient spectrum
- Energy efficient and multi-standard RF front-end for next generation multihoming handsets
- Secure network coding and intrusion detection for mobile small cells
- Enabling mobile Small Cells through network virtualization
SECRET will help current mobile standards to move from the classical non-cooperative paradigm towards a more cooperative approach which is more user-network centric where resources of all devices are seen as a â€œpool of resourcesâ€ to be used by the network as a vehicle for effective use of the mobile network leading towards enhanced spectral and energy efficiency.

Work performed

The following results have been achieved:
- SoA study on Network-Coded Cooperative Networks and Mobile Clouds. Building on the survey, a theoretical analysis on the theoretical bounds for Network-Coded Cooperative Networks was elaborated based on Markov models [D2.1]
- Survey on radio resource management techniques for 5G networks. A baseline scenario was implemented on a system level tool that models a C-RAN scenario based on small cells. Initial results were obtained using cooperative game theory for RRM, however more challenging scenarios representative of SECRET, including mobile small cells will be addressed. Performance metrics include attaining trade-off between maximizing throughout, reducing energy consumption and ensuring QoS.
- Survey on handover policies in mobile networks, energy efficient communications and 5G mobility. As a first step, a baseline scenario was implemented on an in-house system level simulation tool to emulate handovers in LTE networks. This will be further upgraded to support handover between heterogeneous networks and mobile small cells [D2.1]
- Key mobile technologies have been identified and a preliminary reference architecture was proposed that potentially could be used as stepping stone towards a secure network coding architecture (which will include proposed homomorphic MAC and homomorphic signature schemes along with collaborative intrusion detection and prevention mechanism to resist any kind of attacks on infrastructure). A survey was carried out on the key management schemes, data integrity schemes, intrusion detection and prevention schemes that form the basis for the individual projects to be elaborated in WP3 [D3.1]
- SECRET RF transceiver architecture defined and includes state-of-the-art on: Energy Efficient Three-Stage Doherty amplifier for handheld devices at 3.6GHz and 26 GHz (mmWave); Tuneable filters for multi-standard handsets considering design metrics including: energy efficiency, tuning speed, linearity, and with low-loss/or high-Q circuits. Varactor technology is seen as the technology of choice. Design frequency -3.6GHz; Phased array antennas for 5G applications targeting 3.6 GHZ and 26-28 GHz antennas for mobile handsets ; Envelope Tracking Power amplifier for base station at 3.6GHz
- Use-cases and architecture for mobile small cell testbed is being defined by perceiving the network as a pool of virtual resources. The architecture will incorporate virtualization software and SDN (software defined networking) technology in order to build the concept of small cells. This will also include emulating multiple mobile devices and functionalities, that include service discovery (including cluster heads selection), routing, and network coding.
- Virtual Radio Resource Management for beyond 5G. A survey on radio resource management was carried out, that includes the very latest developments on resource management within a virtual pool radio resources. The final objective will be to build a resource allocation framework that optimizes the radio resources for a given QoS, throughput and energy efficiency.

Final results

Legacy 4G networks have several limitations that detracts their use for future emerging services. The need for increasingly higher data rates has meant that current cell sizes are too large to support very high-speed connectivity. On the other hand, network deployment is planned and too rigid to adapt to dynamic variation in traffic that may be perceived on a daily or seasonal level. There is clear need for a new networking architecture that can provide very high speed connectivity at low cost. SECRET goes beyond state-of-the-art by introducing mobile small cells. On one hand, small cells reduce the physical propagation distance between transmitter and receiver providing a platform for ultra-high speed data rates. Moreover, SECRET envisages a series of mobile small cells covering the urban landscape, which are virtual in nature since they can be set up on demand at any place, at any time on any device coordinated by SECRET enabled mobile handsets. These mobile small cell hotspots, from the end-user perspective, are the vehicle for experiencing a plethora of 5G broadband services at low cost with reduced impact on mobile battery lifetime. The mobile small cells will harness ongoing trends in 5G standardization to ensure complementarity and market relevance.
Expected results include:
- Energy efficient and multi-standard RF front-end for next generation multihoming handsets. This includes new filter, power amplifier and antenna designs operating at the 5G (3.6 GHz) and beyond frequencies (26 GHz)
- Network Coded Cooperation for mobile small cells to ensure high error resiliency and efficient spectrum utilization
- Secure networking coding for trusted communications and D2D connectivity
- Network sharing based on a virtual pool of radio resources to promote third part virtual network operators.
- New testbed for enabling mobile small cells based on virtualization and SDN networking.
Indeed SECRET represents a unique opportunity to break the femto-barrier and the potential to reduce the energy consumption in the network, while providing higher data rates, higher capacity and ubiquitous service through reduced-cost solutions.