Securing VNF communication in NFVI

  • Ahola K.
  • Kalliola A.
  • Lal S.
  • Oliver I.
  • Taleb T.

In a modern telco cloud, network functions are performed by groups of single or interconnected virtual machines (VMs), which form virtualized network functions (VNFs). Securing these VNFs is both important and challenging, since the VNFs might be performing some mission critical operations and exchanging sensitive information among each other. The ...

Holistic resource management and air interface abstraction models

  • Bulakci Ö.
  • Ericson M.
  • Fodor G.
  • Gutierrez-Estevez D.
  • Karimi P.
  • Moya F.
  • Prasad A.

Resource Management (RM) in fifth generation (5G) radio access network has been the subject of extensive study in recent years. An agile RM framework should encompass greatly-improved services from previous mobile network generations along with advanced new services meeting the challenging requirements, like massive data rate and ultra-low latency. The ...

End-to-end network slicing enabled through network function virtualization

  • Afolabi I.
  • Bagaa M.
  • Flinck H.
  • Taleb T.

Wireless networks have gone through several years of evolution until now and will continue to do so in order to cater for the varying needs of users. These demands are expected to grow in the future, both in size and variability. Hence, the 5G technology considers these variabilities in service ...

Enhancements of narrowband IoT in 3GPP Rel-14 and Rel-15

  • Bhatoolaul D.
  • Mangalvedhe N.
  • Ratasuk R.
  • Robert M.
  • Xiong Z.

In 3GPP Rel-13, a narrowband system, named Narrowband Internet of Things (NB-IoT), has been introduced to provide low-cost, low-power, wide-area cellular connectivity for the Internet of Things. Further enhancements have been made to this system in subsequent 3GPP releases. In this paper, we describe Rel-14 enhancements that have been standardized ...

RAN enablers for 5G radio resource management

  • Arnold P.
  • Belschner J.
  • Bulakci Ö.
  • Calochira G.
  • Ericson M.
  • Gutierrez-Estevez D.
  • Pateromichelakis E.
  • Prasad A.

This paper presents the description of several key RAN enablers for the radio resource management (RRM) framework of the fifth generation (5G) radio access network (RAN), referred to as building blocks of the 5G RRM. In particular, the following key RAN enablers are discussed: i) interference management techniques for dense ...

An overview of standardization efforts for enabling vehicular-to-everything services

  • Husain S.
  • Kunz A.
  • Prasad A.
  • Samdanis K.
  • Song J.

The Third Generation Partnership Project (3GPP) has been working on developing specifications on Machine to Machine Communications (M2M) and on the emerging Internet of Things (IoT) bringing light into the associated service and network requirements. This paper presents a special form of M2M/IoT communication, where at least one communication device ...

Distributed Transmission and Spatially-Coupled Coding in Multi-Point to Point Networks

  • Buchali F.
  • Eriksson T.
  • Gebhard U.
  • Schmalen L.

We investigate the performance of coded modulation for multi-hop regenerative optical networks. We analyze various simplifications to compute LLRs, compute the achievable rates and show how to optimize distributed spatially coupled FEC schemes.

Compressive Sensing via Convolutional Factor Analysis

  • Jiang H.
  • Wilford P.
  • Yuan X.

We solve the compressive sensing problem via the convolutional dictionary learning. We develop an alternating direction method of multipliers (ADMM) paradigm for compressive inversion. The proposed algorithm can provide the reconstructed images as well as the features, which can be directly used for classification or clustering tasks. A joint compressive ...

Could the Transformation to Cloud-Optimized Networking be Opening a New Era for Dynamic Optical Networking?

  • Sparks K.

Poised to elevate the automated digital economy, new high performance global-scale applications will leverage distributed clouds, network programmability and multi-operator federation. Effective realizations require cohesive multi-layer management of agile reusable resources, driving the necessity for a dynamic optical networking foundation.

Components For Space-Division Multiplexing

  • Fontaine N.

Amplifiers, spatial multiplexers, and routing elements that exploit spatial integration will reduce costs and complexity of future space-division multiplexed transmission systems. Managing spatial modes requires new components such as mode multiplexers, mixers, equalizers, and unscramblers.

TWDM PON Preamble Engineering for Mitigation of a DFB Turn-On Blue-Shift in Burst-Mode Operation

  • Borkowski R.
  • Pfeiffer T.
  • Poehlmann W.

We demonstrate two new schemes for DFB optical frequency drift reduction up to 13-GHz, which address issues of previously described methods. Density increase scheme requires only modification of digital data in the preamble and is therefore well-suited for product implementation.

A machine learning-based framework for preventing video freezes in HTTP adaptive streaming

  • Bostoen T.
  • De Turck F.
  • Huysegems R.
  • Petrangeli S.
  • Wauters T.
  • Wu T.

HTTP Adaptive Streaming (HAS) represents the dominant technology to deliver videos over the Internet, due to its ability to adapt the video quality to the available bandwidth. Despite that, HAS clients can still suffer from freezes in the video playout, the main factor influencing users' Quality of Experience (QoE). To ...

Hamiltonian system approach to distributed spectral decomposition in networks

  • Avrachenkov K.
  • Jacquet P.
  • Sreedharan J.

Because of the significant increase in size and complexity of the networks, the distributed computation of eigenvalues and eigenvectors of graph matrices has become very challenging and yet it remains as important as before. In this paper we develop efficient distributed algorithms to detect, with higher resolution, closely situated eigenvalues ...

Feeding back the result of a workflow-driven process to its design with a single Path-Colored flow diagram

  • Daenen K.

An initial analysis of the flows of the self-care portal of a telecom service provider revealed that most consumers did not follow the process to a conclusive end. The percentage of consumers that abandoned the process, was too high to believe they all resolved their problem. A high number of ...

Compact 60GHz Lens Antenna with Self-Alignment Feature for Small Cell Backhaul.

  • Doumanis E.
  • Gimersky M.
  • Gueye M.
  • Kozlov Dmitry
  • Pivit F.

In this paper we present a highly compact and lowcost antenna solution based on a rexolite-lens and a waveguide horn array feed for operation at 60GHz. The antenna is targeted for applications in point-to-point backhaul systems for Small Cell mobile access networks and features a beamforming capability for self-alignment for ...

A 20Gbps 1.2GHz Full-Duplex integrated AFE in 28nm CMOS for copper access

  • Cools J.
  • Gurne T.
  • Reynaert P.
  • Strackx M.
  • Tytgat M.

A 28nm CMOS 1.2GHz full-duplex analog front end (AFE) is presented. The AFE can deliver 20Gbps of symmetric service across 50m of RG6 coax. The on-chip line driver, powered from a 7.2V supply and using core transistors, delivers 5.9Vptp differential to the line through the hybrid. A tunable capacitive hybrid ...

A Multi-objective Heuristic for the Optimization of Virtual Network Function Chain Placement

  • Grigorjew A.
  • Jarschel M.
  • Lange S.
  • Tran-Gia P.
  • Zinner T.

The Network Functions Virtualization (NFV) paradigm offers network operators benefits in terms of cost efficiency, vendor independence, as well as flexibility and scalability. However, in order to profit most from these features, new challenges in the area of management and orchestration of the virtual network functions (VNFs) need to be ...

Raman Fibre Laser Based Amplification in Long-haul/ Unrepeatered Coherent Transmission Systems

  • Ian. D. Phillips
  • Md Asif Iqbal
  • Mingming Tan
  • Paul Harper
  • Pawe³ Rosa
  • Sergei K. Turitsyn
  • Thai Le S.

The paper reviews recent advances of Raman fibre laser (RFL) based amplification techniques in long-haul/unrepeatered coherent transmission systems. Different aspects of theRFL based amplification have been characterised, including signal power distributions and relative intensity noise (RIN). Various RFL based amplifier designs were evaluated in long-haul coherent transmission systems. The results ...

Video processing for virtual cockpit over 5G networks

  • Becirbasic D.
  • Lukac Z.
  • Molnar M.
  • Samardzija D.

Autonomous driving is the next breakthrough in automotive industry. Although the current achievements are very promising we still envision applications in which a certain level of assistance from the remote operator would be required. The goal of the project is to realize a semi-autonomous driving platform prototype with low-latency control/command ...

Video-processing platform for semi-autonomous driving over 5G networks

  • ŽLukaä?
  • Becirbasic D.
  • Molnar M.
  • Samard D.

Semi-autonomous driving is a huge technological step, but it also introduces a range of new challenges. Real-time control, selection and development of hardware platform, data transfer and development of algorithms are just a small collection of technical challenges to fully take advantages of such a system. The focus of this ...