Optimizing Operational Costs of NFV Service Chaining

  • Caggiani Luizelli M.
  • Raz D.
  • Saar Y.

Network Function Virtualization (NFV) is a novel paradigm that enables flexible and scalable implementation of network services on cloud infrastructure. One of the key factors in the success of NFV is the ability to dynamically allocate physical resources according to the actual demand. Yet, orchestrating service chains that require high ...

Challenges for Enabling Virtual Reality Broadcast Using 5G Small Cell Network

  • Navratil D.
  • Prasad A.
  • Saily M.
  • Uusitalo M.

In the recent past, with the ubiquitous adoption of smartphones and tablets, there has been an exponential increase in data rate demands which has increasingly challenging for network operators to support. This trend is expected to continue in future, with the advent of high-performance gaming and increasing appetite for immersive ...

Advancements of QoE assessment and optimization in mobile networks in the machine era

Although QoE evaluation methodologies for human communication services in mobile networks â€" such as voice and video streaming â€" are a widely researched topic, several challenges remain yet unresolved including industry-agreed definitions of end-to-end performance indicators. With 5G, a wide variety of new use cases and diverse services shall be ...

Distributed energy saving management in multi-layer 4G/5G ultra-dense networks

Energy consumption in mobile networks rises with increase in cell density. This trend will only continue in the future multi-layer 5G-related Ultra-Dense Networks (UDN) that are characterized by high number and density of cells in multiple radio technologies each in one or more layers. Several Energy Saving Management (ESM) solutions ...

Creating value through blockchain powered resource configurations: Analysis of 5G network slice brokering case

The exponential growth of wireless services with diversity of devices and applications has inspired the research community to come up with novel concepts to improve the efficiency of resource use. It is cost efficient and practical to be able to evaluate and analyze expected value of use cases before actual ...

Network slices for vertical industries

Network Slicing allows to simultaneously support the specific needs of vertical industries with a diverse range of networking and computing requirements. Network Functions Virtualization (NFV) has been defined to deploy multiple network services on a common infrastructure. We extend the NFV concept to vertical services, i.e. services implemented on top ...

SON function performance prediction in a cognitive SON management system

As a reply to the increasing demand for fast mobile network connections the concept of Self-Organising Networks (SONs) has been developed, reducing the need for humans to execute Operation, Administration and Maintenance (OAM) tasks for mobile networks. However, a SON contains functions which are provided by different vendors as black ...

Positioning of high-speed trains using 5G new radio synchronization signals

We study positioning of high-speed trains in 5G new radio (NR) networks by utilizing specific NR synchronization signals. The studies are based on simulations with 3GPP-specified radio channel models including path loss, shadowing and fast fading effects. The considered positioning approach exploits measurement of Time-Of-Arrival (TOA) and Angle-Of-Departure (AOD), which ...

Multiplexing of latency-critical communication and mobile broadband on a shared channel

This paper presents solutions for efficient multiplexing of ultra-reliable low-latency communications (URLLC) and enhanced mobile broadband (eMBB) traffic on a shared downlink channel. Such a scenario presents multiple challenges in the context of radio resource scheduling, link adaptation and inter-cell interference, which are identified and addressed throughout the paper. Specifically, ...

Average downlink SINR model for 5G mmWave networks with analog beamforming

Millimeter-wave frequency bands enable the deployment of small-sized antenna arrays in the fifth generation of mobile networks, which provide high beamforming gain for both transmitter and receiver. In order to study user mobility, a computationally efficient simulator is needed that runs with a time step resolution that is higher than ...

Providing strong 5G mobile network slice isolation for highly sensitive third-party services

Future 5G mobile networks are expected to support network slicing, i.e. multiple virtual networks running on a common infrastructure. A virtual network, called network slice, may be created to support a specific communication service type, such as massive machine-type communication, or even a specific application, for example one single Internet ...

Performance analysis of uplink massive MIMO networks with a finite user density

In this paper, we conduct performance analysis for uplink (UL) massive multiple input and multiple output (mMI-MO) networks using stochastic geometry. With the consideration of practical system assumptions, such as sophisticated path loss model incorporating both line-of-sight (LoS) and non-line-of-sight (NLoS) transmissions and a finite user equipment (UE) density, we ...

5G new radio and LTE uplink coexistence

By the introduction of the fifth generation (5G) mobile communication networks and its physical layer entitled as new radio (NR), the question of link performance in coexistence scenario between the 5G NR and fourth generation (4G) mobile communication networks based on long term evolution (LTE) has been raised. In this ...

Promises and caveats of uplink IoT ultra-dense networks

In this paper, by means of simulations, we evaluate the uplink (UL) performance of an Internet of Things (IoT) capable ultra-dense network (UDN) in terms of the coverage probability and the density of reliably working user equipments (UEs). From our study, we show the benefits and challenges that UL IoT ...

Edge computing meets millimeter-wave enabled VR: Paving the way to cutting the cord

In this paper, a novel proactive computing and mmWave communication for ultra-reliable and low latency wireless virtual reality (VR is proposed. By leveraging information about users' poses, proactive computing and caching are used to pre-compute and store users' HD video frames to minimize the computing latency. Furthermore, multi-connectivity is exploited ...

LTE radio measurements above urban rooftops for aerial communications

This paper focus on the investigation of aerial communications for drones connected to cellular networks in urban areas. Most of the previous measurement based channel models for urban environments do not extend to users located at heights above rooftops. On the other hand, UAVs are expected to fly at the ...

Low complexity power control with decentralized fog computing for distributed massive MIMO

Fronthaul constrained Distributed Massive MIMO system (DM-MIMO) is a combination of Massive MIMO, and the architecture of Cloud Radio Access Network (C-RAN). It can simultaneously exploit the high spectral and energy efficiency provided by these two promising techniques of 5G, and boosts each other. We investigate the uplink of such ...

Transferring knowledge for tilt-dependent radio map prediction

Fifth generation wireless networks (5G) will face key challenges caused by diverse patterns of traffic demands and massive deployment of heterogeneous access points. In order to handle this complexity, machine learning techniques are expected to play a major role. However, due to the large space of parameters related to network ...

Indoor massive MIMO deployments for uniformly high wireless capacity

Providing consistently high wireless capacity is becoming increasingly important to support the applications required by future digital enterprises. In this paper, we propose Eigen-direction-aware ZF (EDA-ZF) with partial coordination among base stations (BSs) and distributed interference suppression as a practical approach to achieve this objective. We compare our solution with ...

5G new radio uplink performance: Noise, interference and emission constraints

This paper investigates the 5G new radio (NR) uplink (UL) performance with CP-OFDM and DFT-s-OFDM based waveforms. The effects of highly non-linear PA behavior, inter-allocation interference, and UL multi-user MIMO on the relative performance of these waveforms are addressed. It is shown that with relaxed EVM and inband emission requirements ...