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METIS is the EU flagship project with the purpose of developing a 5G system concept that meets the requirements of the beyond-2020 connected information society and emerging applications. Within METIS project, horizontal topics (HTs) are used to build the overall system concept. Direct Device-to-Device (D2D) communication is one of the HTs and regarded as a promising technology to provide low power,...
This article presents a plastic architecture for the advanced 5G infrastructure based on the latest advances of SDN, NFV and edge computing. The novel approach consists of three levels of control, i.e. Device, Edge and Orchestration Controllers, fully decupled from the user plane and backwards compatible to current and future 3GPP releases. The proposed control layers implement a unified security,...
This paper investigates key stakeholders' incentives for the hybrid use of the Ultra High Frequency (UHF) spectrum for broadcasting and mobile broadband using novel Supplemental Downlink (SDL) Carrier Aggregation (CA) technique from the dynamic capabilities perspective of strategic management. So far broadcaster (BC) community has lacked true incentives for sharing the spectrum they currently use...
As the number of wireless connected devices grow, the wireless industry is challenged to meet demand while continuing to improve data rates and quality of service (QoS). Visible light communication (VLC) has significant potential to be used as a new high speed layer in future heterogeneous RF networks. This work reviews the major challenges and important applications of hybrid VLC/RF networks, and...
The meaning of 5G is still a subject of discussion in the industry. However, the softwarization of networks is expected to shape the design, operation and management of 5G networks. The opportunity is then crucial for Telcos, vendors and IT players to consider the management of 5G networks during its design time and avoid the “build it first, manage it later” paradigm. However, network softwarization...
Dynamic spectrum access (DSA) is an attractive approach to solve the spectrum scarcity problem. Among DSA techniques, spectrum overlay is an approach where the spectrum licensed to a primary user (PU) is shared by a secondary user (SU) while protecting the PU from the interference caused by SU spectrum reuse. In the case where PU traffic is dynamic, spectrum sharing is difficult as satisfying requirements...
In future mobile communication systems, more users will rely on mobile data services while riding public transportation vehicles for either working or entertainment. To serve these vehicular users effectively, the deployment of moving base stations on public transportation vehicles is considered as one of the most promising solutions. Each public transportation vehicle forms a moving network (MN)...
This paper considers coexisting wireless networks sharing radio resources with contradicting performance objectives. A multi-objective optimization framework is proposed to investigate the fundamental trade-off between the performance of the coexisting networks. For a given set of radio resources, the optimal achievable performances of the coexisting networks are characterize by a multi-dimensional...
This paper examines the new Licensed Shared Access spectrum sharing case in Finland. Functionality of mobile communication market and architecture define how mobile subscribers behave both technically and economically. If the mobile services fit together, interfaces between elements and services are the key. Definition of interfaces exists between new mobile devices, mobile and fixed networks and...
A major challenge of future mobile networks is providing the needed elastic scaling to the increased traffic demand, number of users and applications with acceptable cost. Another challenge is suitability for numerous communications applications while curbing unwanted traffic on the air interface and the mobile devices. This paper proposes a vision of how these challenges can be met by applying the...
The high anticipated mobile data growth pushes mobile operators to rethink about the way they charge for mobile broadband. The purpose of this study is to analyze the cost-based pricing which provides fundamental information to mobile operators to form a pricing strategy. Assuming that the total network cost has to be recovered at a specific traffic level (price-determinant traffic level), the analysis...
The plethora of wireless devices resulting in a humongous data usage has already pushed the current mobile networks to their limit. Therefore the research and development of the next generation mobile network must take place now. In this regard a mobile network operator has a pivotal role in understanding the required performance of the coming fifth generation network, and also influencing its final...
Spectrally efficient frequency division multiplexing (SEFDM) improves spectral efficiency relative to the well known orthogonal frequency division multiplexing (OFDM). Optimal detection of SEFDM, to recover signals corrupted by inter carrier interference (ICI), has major drawbacks in the exponential growth of detection complexity with the enlargement of system size and modulation level. This poses...
End-to-end delay performance is an important Quality of Service (QoS) metric in 5G communication systems and wireless sensor networks (WSNs). Recently, a multi-hop effective capacity model was proposed to provide accurate characterization of end-to-end delay performance in wireless multi-hop environments. However, this model was developed in the continuous-time domain, which accounts for a discrepancy...
This paper addresses the virtualisation of wireless access in order to provide the required capacity (data rate) to a set of Virtual Base Stations (VBSs). The approach is based on a Virtual Radio Resource Allocation algorithm, OnDemandVRRA, which manages the allocation of the physical radio resources to the VBSs, in order to follow the contract and maintaining isolation among the VBSs, according to...
The high mobile data traffic growth requires investments in radio access networks. Network capacity expansion can be achieved by increasing the number of base stations, increasing the network spectral efficiency and obtaining additional spectrum. This study assumes a constant number of base station to compare two potential future network deployment scenarios; the Licensed Shared Access scenario (LSA),...
This paper presents a study on uplink capacity of an LTE public safety network supporting video surveillance in order to assist first responders when they need to visualize remotely a critical area. Using system-level simulations, the number of supported surveillance camera users within a cell area of interest is determined. Targeted bit rate in uplink is 512 kbps.
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