A flexible, deterministic and highly reliable end-to-end communication network for industrial automation systems.

The convergence of information and communications technology (ICT) and operation technology (OT) into a common infrastructure for factory floors, is one of the key enablers for Industry 4.0. Time Sensitive Networking (TSN) is being developed for that purpose. It extends the Ethernet standard (IEEE 802.1) with real-time capabilities. Only TSN ...

System-level study of data duplication enhancements for 5G downlink URLLC

ABSTRACT Data duplication is studied as a fundamental enabler for ultra-reliable low-latency communication (URLLC) in fifth-generation cellular systems. It entails the simultaneous usage of multiple radio links delivering redundant data between a terminal and the network to boost the transmission reliability. However, the improved reliability comes at a cost of ...

Frequency-Domain Adaptive Filtering Revisited, Generalization to the Multi-Channel Case, and Application to Acoustic Echo Cancellation

We drive a new frequency-domain adaptive algorithm by using a frequency-domain recursive least squares criterion, minimizing an error signal in the frequency-domain. A similar criterion was proposed by Mansour and Gray by using mathematical expectations. Here, however, we propose to go one step further and derive an exact adaptive algorithm ...

Real Time Trading Of Mobile Resources In Beyond 5G Systems

5G is expected to offer download speeds as high as 1 GBps and latency lower than 10 ms that lead to the need for enormous investments. However, many small operators simply do not possess the necessary revenue in order to deploy the required infrastructure, while the rich operators are unwilling ...

ClickNF: a Modular Stack for Network Function Composition

Network function virtualization calls for the replacement of specialized equipment and monolithic software deployments by functionally equivalent but leaner modular software implementations. Server-side network functions developers could especially benefit from the existence of a highly customizable yet scalable framework for the rapid design of network applications. However, balancing the conflicting ...

Cross Link Interference Suppression By Orthogonal Projector in 5G Dynamic-TDD URLLC Systems

Dynamic time division duplexing (TDD) is envisioned as a vital transmission technology of the 5G new radio, due to its reciprocal propagation characteristics. However, the potential cross link interference (CLI) imposes a fundamental limitation against the feasibility of the ultra-reliable and low latency communications (URLLC) in dynamic-TDD systems. In this ...

End-to-End Network Slice Resource Allocation for 5G Mobile Edge Computing

Mobile Edge Computing (MEC) is a key feature in future 5G mobile networks. It enables, low latency services, by bringing them closer towards the users. In 5G also a new logical network architecture providing isolated logical Network Slices (NSLs) is introduced. This necessitates an initial capacity planning and allocation of ...

Automatic Inference of Cloud Application Performance Degradation

In order for a cloud operator to make effective decisions with respect to horizontal scaling, migration, and root cause analysis, current cloud orchestration tools often need to monitor application or service-level metrics, such as latency (response time) or throughput. The interpretation of these metrics often requires significant experience (and expertise) ...

An Efficient Model for Mobile Network Slice Embedding under Resource Uncertainty

The fifth generation (5G) of mobile networks will support several new use cases, like the Internet of Things (IoT), massive Machine Type Communication (mMTC) and Ultra- Reliable and Low Latency Communication (URLLC) as well as significant improvements of the conventional Mobile Broadband (MBB) use case. End-to-end network slicing is a ...

Path Planning Problems with Side Observations- When Colonels Play Hide-and-Seek

Resource allocation games such as the famous Colonel Blotto (CB) and Hide-and-Seek (HS) games are often used to model a large variety of practical problems, but only in their one-shot versions. Indeed, due to their extremely large strategy space, it remains an open question how one can efficiently learn in ...

Combinatorics of nondeterministic walks of the Dyck and Motzkin type

This paper introduces nondeterministic walks, a new variant of one-dimensional discrete walks. At each step, a nondeterministic walk draws a random set of steps from a predefined set of sets and explores all possible extensions in parallel. We introduce our new model on Dyck steps with the nondeterministic step set ...

Symbolic Method and Directed Graph Enumeration

We introduce the arrow product, a new generating function technique for directed graph enumeration. It provides new short proofs for previous results of Gessel on the number of directed acyclic graphs and of Liskovets, Robinson and Wright on the number of strongly connected directed graphs. We also obtain new enumerative ...

On Hyper-local Conversational Agents in Urban Settings

In the last decade, a large number of virtual assistants have been offered to the market. These conversational agents use vocal commands from the users to perform various personalized tasks that are constrained by the applications a user installs on her devices. We consider a brand new conversational agent in ...

An Early Characterisation of Wearing Variability onMotion Signals for Wearables

We explore a new variability observed in motion signals acquired from modern wearables. Wearing Variability refers to the variations of the device orientation and placement across wearing events. We collect the accelerometer data on a smartwatch and an earbud and analyse how motion signals change due to the wearing variability. ...

Benefits of software testing using the Scrum framework. How to avoid the Cargo Cult?

Short analysis of diffrent approaches to the small project/ team management.

Machine Learning Data Sets for Cross-Layer and End-to-End Networks

The emergence of cloud computing has had a profound impact on our lives, enabling for example, scalable compute and storage for enterprises, and cloud-based personal digital assistants based on artificial intelligence (AI) in homes. While considerable investment has gone into creating on-demand cloud-compute resources, the flexibility of the underlying network, ...

Detection-Localisation-Identification of Vibrations over Long Distance SSMF using Coherent Phase-OTDR

We propose a novel interrogation technique for Distributed Acoustic Sensing (DAS) and demonstrate the detection and recognition of multiple vibration events over 50km of SSMF. A differential-phase optical time-domain reflectometry (diff-Phi OTDR) approach is used with the transmission of a continuous laser modulated with polarization-multiplexed orthogonal binary sequences and the ...

DCI Field Trial demonstrating 1.3-Tb/s Single-Channel and 50.8-Tb/s WDM Transmission Capacity

We demonstrate, to the best of our knowledge, the highest reported single- and multi-channel capacities over a field-deployed data center interconnection (DCI) system operating over 93 km of standard single-mode fiber using only Erbium-doped fiber amplification. Using off-the-shelf hardware components, and in particular using only a single digital-to-analog converter per ...

A 112-GS/s 1-to-4 ADC front-end with more than 36-dBc SFDR and 28-dB SNDR up to 43-GHz in 130-nm SiGe BiCMOS

Voltage-mode sampling circuits operating at mm-wave frequen-cies require clocks with root-mean-squared (RMS) jitter in the two-digit femtosecond range for high SNR performance. The generation of such clean clocks, however, presents a serious de-sign challenge. To mitigate this problem, an alternative sampling approach based on charge sampling is proposed. For the ...

Pre- and post-transmission digital signal processing using neural networks applied to fiber-optic communication systems relying on power modulation and power detection : Advantages and drawbacks

For ML Photonica 2019: https://ml-photonica2019.astonphotonics.uk/ In this presentation we explain the nonlinearities and complexity of transceivers relying on power modulation and detection. We detail the challenges for reliable communication through this type of channel when trying to deliver high bitrates over a few tens of kilometers.