Traffic Engineering in data centers with CloudBOSS: Cloud Burst Optical Slot Switching

  • Pointurier Y.

We review and demonstrate CloudBOSS, an intra-data center architecture based on optical packet switching, and its key optical building blocks. CloudBOSS, when coupled with an SDN-enabled control plane, can provide on-demand strict performance guarantees (e.g., end-to-end capacity or bounded latency).

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.

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 ...

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

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 ...

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 ...

Constant Delivery Delay Protocol Sequences for the Collision Channel Without Feedback

  • Chen C.
  • Salaun L.

We consider the collision channel without feedback, a time-slotted communication channel shared by K users. In this model, packets transmitted in the same time slot collide and are unrecoverable. Each users access the channel according to an internal periodical pattern called protocol sequence. Due to the lack of feedback, users ...


  • Cammerer S.
  • Hoydis J.
  • Leible B.
  • Stahl M.
  • Ten Brink S.

The decoding performance of polar codes strongly depends on the decoding algorithm used, while also the decoder throughput and its latency mainly depend on the decoding algorithm. In this work, we implement the powerful successive cancellation list (SCL) decoder on a GPU and identify the bottlenecks of this algorithm with ...

Building Connected Car Applications on Top of the World-Wide Streams Platform

  • Cortes M.
  • Dobbelaere P.
  • Hoste L.
  • Philips E.
  • Roelands M.
  • Sheykh Esmaili K.
  • Trappeniers L.
  • Van Cutsem T.
  • Van Raemdonck W.

The connected car is likely to play a fundamental role in the foreseeable Internet of Things. The connectivity aspect in combination with the available data (e.g. from GPS, on-board diagnostics, road sensors) and video (e.g. from dashcams and traffic cameras) streams enable a range of new applications, e.g., accident avoidance, ...

Tutorial: Reflections on Almost Two Decades of Research into Stream Processing

  • Sheykh Esmaili K.

Ever since the need for new approaches and systems to handle data streams was identified in early 2000s, stream processing has been an active area of research, resulting in a large body of work with significant impact. This tutorial reflects on this research history by highlighting a number of trends ...

Kafka versus RabbitMQ, A comparative study of two industry reference publish/subscribe implementations

  • Dobbelaere P.
  • Sheykh Esmaili K.

Apache Kafka and RabbitMQ are two popular publish/subscribe implementations that can be used when a multitude of data streams need to be connected between a set of producers and a set of con- sumers. They have some functional and non-functional features in common, which encourages software architects to compare them ...


  • Chen S.
  • Grover P.
  • Kar S.
  • Kovacevic J.
  • Maddahali M.
  • Yang Y.

We consider a problem of localizing the destination of an activated path signal supported on a graph. An “activated path signal” is a graph signal that evolves over time that can be viewed as the trajectory of a moving agent. We show that by combining dynamic programming and graph partitioning, ...

Multi-user Communication in Cloud Radio Access Network: Architecture, Coordination and Optimization

  • Boviz D.

In future mobile networks denser deployment of radio access points is planned to satisfy demand of higher throughput, but an increased number of mobile users can suffer from inter-cell interference. Fortunately, the centralization of base-band processing offered by Cloud Radio Access Network (C-RAN) architecture enables coordination and joint physical layer ...