Routing at Large Scale: Advances and Challenges for Complex Networks

  • Audenaert P.
  • Camelo M.
  • Careglio D.
  • Colle D.
  • Coudert D.
  • Demeester P.
  • Fabrega L.
  • Glacet C.
  • Kumar A.
  • Nisse N.
  • Papadimitriou D.
  • Sahhaf S.
  • Tavernier W.
  • Vila P.

A wide range of social, technological and communication systems can be described as complex networks. Scale-free networks are one of the well known classes of complex networks in which nodes' degrees follow a power-law distribution. The design of scalable, adaptive and resilient routing schemes in such networks is very challenging. ...

Squeezing Deep Learning into Mobile and Embedded Devices

  • Bhattacharya S.
  • Forlivesi C.
  • Georgiev P.
  • Kawsar F.
  • Lane N.
  • Mathur A.

This department provides an overview the progress the authors have made to the emerging area of embedded and mobile forms of on-device deep learning. Their work addresses two core technical questions. First, how should deep learning principles and algorithms be applied to sensor inference problems that are central to this ...

Polarization Dependent Loss: fundamental limits and how to approach them

  • Awwad E.
  • Dumenil A.
  • Measson C.

Polarization-Dependent-Loss impairs polarization-multiplexed systems and fundamentally limits their capacity. Significant gains are achieved when signaling and channel equalization are properly addressed. Compared to conventional processing, 0.9dB SNR gain is measured for error-free transmission at PDL=6dB.

Geometric Deep Learning Going beyond Euclidean data

  • Bronstein M.
  • Bruna J.
  • Lecun Y.
  • Szlam A.
  • Vandergheynst P.

Service-Centric Networking for Distributed Heterogeneous Clouds

  • Burstzynowski D.
  • Griffin D.
  • Maini E.
  • Phan T.
  • Rio M.
  • Schamel Folker
  • Simoens P.
  • Vandeputte F.
  • Vermoesen L.

Optimal placement and selection of service instances in a distributed heterogeneous cloud is a complex trade-off between application requirements and resource capabilities that requires detailed information on the service, infrastructure constraints, and the underlying IP network. In this article we first posit that from an analysis of a snapshot of ...

Coordination of SON Functions in Multi-Vendor Femtocell Networks

  • Claussen H.
  • Gacanin H.
  • Ho L.
  • Zakrzewska A.

With the increase of network complexity, there is a high need for network management automation. This is achieved through SON principles that enable self-configuration, self-optimization, and self-healing. However, even though SON functions are meant to be autonomous, a high level of coordination among them is required. To this end, efficient ...

Precoding and Power Optimization in Cell-Free Massive MIMO Systems

  • Ashikhmin A.
  • Marzetta T.
  • Nayebi E.
  • Rao B.
  • Yang H.

Cell-free Massive multiple-input multiple-output (MIMO) comprises a large number of distributed low-cost low-power single antenna access points (APs) connected to a network controller. The number of AP antennas is significantly larger than the number of users. The system is not partitioned into cells and each user is served by all ...

Mixed-signal strategies for 5G: final architecture and design for flexibility, power and spectral efficiency

  • Ferling D.

The document contains only Nokia contributions to the deliverable D3.2 of the EU funded project Flex5Gware. It deals with concepts and solutions for multiband base station transmitters and multi-chain transmitters for MIMO applications.

Analogue components for high-performing and versatile 5G RF front-ends

  • Bulja S.
  • Doumanis E.
  • Ferling D.

The document contains the Nokia contributions to the deliverable D2.2 of the EU funded project Flex5Gware: This deliverable describes concepts and solutions for RF front-ends and antennas designated for network elements and devices in 5G mobile systems. Key components and features are defined to significantly improve the capability of mobile ...

mmMAGIC Deliverable D3.2: Evaluations of the concepts for the 5G architecture and integration

  • Fiadrino C.
  • Filippou M.
  • Halbauer H.
  • Li Y.
  • Lorca J.
  • Rugeland P.
  • Shariyt M.
  • Siaud I.
  • Tano R.
  • Tercero M.
  • Vijay A.
  • Widmer J.
  • Zou Y.

This deliverable D3.2 has its focus on concepts for 5G systems operating in mm-wave frequency bands and the integration into the overall 5G system. The concepts rely on architectural enablers and RAN functionalities designed to handle mm-wave specific challenges. These enablers and functionalities are described and evaluated with respect to ...

Self-similarity in Urban Wireless Networks: Hyperfractals

  • Jacquet P.
  • Popescu D.

We introduce a model of Poisson patterns of fixed and mobile nodes on lines designed for urban wireless networks. The pattern obeys to “Hyperfractal” rules of dimension larger than 2. The hyperfractal pattern is the best suitable to capture the traffic over the streets and highways in a city. We ...

On the Performance of Practical Ultra-Dense Networks: The Major and Minor Factors

  • Lopez-Perez D.
  • Ming Ding

In this paper, we conduct performance evaluation for Ultra-Dense Networks (UDNs), and identify which modelling factors play major roles and minor roles. From our study, we draw the following conclusions. First, there are 3 factors/models that have a major impact on the performance of UDNs, and they should be considered ...

Making the Case for Dynamic Wireless Infrastructure Sharing: a Techno-Economic Game

  • Capone A.
  • Lieto A.
  • Malanchini I.
  • Suryaprakash V.

Dynamic and flexible radio resource management in a multi-tenant shared infrastructure is an effective strategy to improve the quality experienced by end users. In this framework, we propose a techno-economic model that allows network operators to compete and dynamically select the quality target to deliver to their customers, while simultaneously ...

Beam Based Stochastic Model for Evaluating Coverage Probability in 5G Millimeter Wave Systems

  • Aziz D.
  • Malanchini I.
  • Tatino C.

Communications using frequency bands in the millimeter waves range will play a key role in future generations of mobile networks. It will provide high data rates by exploiting a wide range of unlicensed spectrum available at very high carrier frequencies. The prevailing challenge at high frequencies is to mitigate the ...

An examination of the benefits of scalable TTI for heterogeneous traffic management in 5G networks

  • Fountoulakis E.
  • Liao Q.
  • Pappas N.
  • Suryaprakash V.
  • Yuan D.

The rapid growth in the number and variety of connected devices requires 5G wireless systems to cope with a very heterogeneous traffic mix. As a consequence, the use of a fixed transmission time interval (TTI) during transmission is not necessarily the most efficacious method when heterogeneous traffic types need to ...

Potential of WDM packets

  • Chiaroni D.
  • Uscumlic B.

The need for ultra-low latencies fronthaul/backhaul solutions for the 5G as well as the need for low energy consumption technologies in a cost-effective way push constructors of equipment to propose disruptive approaches offering new KPIs for ICT. This paper will then draw the potential of WDM packets in terms of ...

"VERNE": New Packet-Optical Network for Optically Transparent and Lossless Data Centers

  • Chiaroni D.
  • Uscumlic B.

Further growth of data centers is imposing to look for very scalable, cheap and energy efficient interconnection network inside data centers. In this paper, we propose a new packet-optical network called "VERNE", aiming to satisfy the above requirements by resorting to the all-optical and ``lossless'' operation (by "lossless" we mean ...

Side-Link Assisted Hybrid Automatic Repeat Request for Ultra-Reliable Low Latency Communications

One of the key use cases of 5G is to deliver ultra-reliable low latency communication (URLLC). Besides antenna and frequency diversity techniques, hybrid automatic repeat request (HARQ) is a powerful tool to increase reliability. However, due to the low latency requirement, only a very small number of retransmissions can be ...

Optimized Combination of Conventional and Constrained Massive MIMO Arrays

  • Ganesan R.
  • Kramer G.
  • Panzner B.
  • Staudacher M.
  • Zirwas W.

A combination of low cost constrained massive multiple-input-multiple-output (MIMO) and conventional arrays for constructing receiver signal points is investigated. The constrained radio frequency (RF) front ends are limited to on/off switching of antenna elements. A few full RF frontends are shown to compensate for the signal errors of the constrained ...

Technologies and architectures to enable SDN in converged 5G/optical access networks

  • Blumm C.
  • Bonk R.
  • Brandonisio N.
  • Carey D.
  • Hill A.
  • Mcgettrick S.
  • Ossieur P.
  • Parsons N.
  • Payne D.
  • Pfeiffer T.
  • Porto S.
  • Ruffini M.
  • Slyne F.
  • Talli G.
  • Townsend P.

The challenging performance targets of future 5G networks will require a radical change in the network design with a much closer interaction between wireless and optical systems. Dynamically reconfigurable time-division multiplexing (TDM) dense wavelength division multiplexing (DWDM) long-reach passive optical networks (PONs) provide a promising platform to enable the convergence ...