scholarly journals C-RAN Traffic Aggregation on Latency-Controlled Ethernet Links

2018 ◽  
Vol 8 (11) ◽  
pp. 2279 ◽  
Author(s):  
Federico Tonini ◽  
Bahare Khorsandi ◽  
Steinar Bjornstad ◽  
Raimena Veisllari ◽  
Carla Raffaelli
Keyword(s):  
Mobile Networks ◽  
High Capacity ◽  
Access Networks ◽  
Hybrid Network ◽  
Network Function Virtualization ◽  
Available Bandwidth ◽  
Optical Links ◽  
Network Function ◽  
Radio Access ◽  
Joint Application

Centralized/Cloud Radio Access Networks (C-RAN) are deployed in converged fixed-mobile networks to exploit the flexibility coming from joint application of Network Function Virtualization (NFV) and Software Defined Networking (SDN). In this context, optical links connecting C-RAN nodes, possibly based on the Ethernet standards, may carry traffic with different requirements in terms of latency and throughput. This paper considers the problem of traffic aggregation on C-RAN optical Ethernet links with latency control for fronthaul traffic and throughput capability for backhaul traffic. Integrated hybrid network technique is applied to show how time transparency can be enforced for Ethernet encapsulated Common Public Radio Interface (CPRI) traffic while allowing statistical multiplexing of backhaul traffic. Simulation results show the effectiveness of segmentation of backhaul traffic to allow exploitation of the available bandwidth even with high capacity CPRI options.

scholarly journals C-RAN Traffic Aggregation on Latency-controlled Ethernet links

2018 ◽  
Author(s):  
Federico Tonini ◽  
Bahare Masood Khorsandi ◽  
Steinar Bjornstad ◽  
Raimena Veisllari ◽  
Carla Raffaelli
Keyword(s):  
Mobile Networks ◽  
High Capacity ◽  
Access Networks ◽  
Network Function Virtualization ◽  
Available Bandwidth ◽  
Optical Links ◽  
Network Function ◽  
Radio Access ◽  
Joint Application ◽  
Simulation Results

Centralized/Cloud Radio Access Networks (C-RAN) are deployed in converged fixed-mobile networks to exploit the flexibility coming from joint application of Network Function Virtualization (NFV) and Software Defined Networking (SDN). In this context, optical links connecting C-RAN nodes, possibly based on the Ethernet standards, may carry traffic with different requirements in terms of latency and throughput. This paper considers the problem of traffic aggregation on C-RAN optical Ethernet links with latency control for fronthaul traffic and throughput capability for backhaul traffic. Integrated hybrid nework technique is applied to show how time transparency can be enforced for Ethernet encapsulated Common Public Radio Interface (CPRI) traffic while allowing statistical multiplexing of backhaul traffic. Simulation results show the effectiveness of segmentation of backhaul traffic to allow exploitation of the available bandwidth even with high capacity CPRI options.

Exploring SDN & NFV in 5G Using ONOS & POX Controllers

2018 ◽  
Vol 10 (4) ◽  
pp. 46-60 ◽  
Author(s):  
Christos Bouras ◽  
Anastasia Kollia ◽  
Andreas Papazois
Keyword(s):  
Operating System ◽  
Mobile Networks ◽  
Data Center ◽  
Central Office ◽  
Software Defined Networking ◽  
Theoretical Research ◽  
Network Function Virtualization ◽  
Network Function ◽  
Cloud Networking ◽  
Experimental Findings

This article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.

scholarly journals The Four-C Framework for High Capacity Ultra-Low Latency in 5G Networks: A Review

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3449 ◽  
Author(s):  
Kelechi ◽  
Alsharif ◽  
Ramly ◽  
Abdullah ◽  
Nordin
Keyword(s):  
New Technologies ◽  
Review Paper ◽  
Multiple Input Multiple Output ◽  
High Capacity ◽  
Network Function Virtualization ◽  
Low Latency ◽  
5G Networks ◽  
Network Function ◽  
Daunting Task ◽  
Input Multiple Output

Network latency will be a critical performance metric for the Fifth Generation (5G) networks expected to be fully rolled out in 2020 through the IMT-2020 project. The multi-user multiple-input multiple-output (MU-MIMO) technology is a key enabler for the 5G massive connectivity criterion, especially from the massive densification perspective. Naturally, it appears that 5G MU-MIMO will face a daunting task to achieve an end-to-end 1 ms ultra-low latency budget if traditional network set-ups criteria are strictly adhered to. Moreover, 5G latency will have added dimensions of scalability and flexibility compared to prior existing deployed technologies. The scalability dimension caters for meeting rapid demand as new applications evolve. While flexibility complements the scalability dimension by investigating novel non-stacked protocol architecture. The goal of this review paper is to deploy ultra-low latency reduction framework for 5G communications considering flexibility and scalability. The Four (4) C framework consisting of cost, complexity, cross-layer and computing is hereby analyzed and discussed. The Four (4) C framework discusses several emerging new technologies of software defined network (SDN), network function virtualization (NFV) and fog networking. This review paper will contribute significantly towards the future implementation of flexible and high capacity ultra-low latency 5G communications.

scholarly journals Efficient virtual network function placement strategies for Cloud Radio Access Networks

2018 ◽  
Vol 127 ◽  
pp. 50-60 ◽  
Author(s):  
Deval Bhamare ◽  
Aiman Erbad ◽  
Raj Jain ◽  
Maede Zolanvari ◽  
Mohammed Samaka
Keyword(s):  
Access Networks ◽  
Virtual Network ◽  
Cloud Radio Access Networks ◽  
Radio Access Networks ◽  
Network Function ◽  
Radio Access ◽  
Virtual Network Function

scholarly journals AMF Optimal Placement based on Deep Reinforcement Learning in Heterogeneous Radio Access Network

2020 ◽  
Author(s):  
hao jin ◽  
Wenzhe Pang ◽  
Chenglin Zhao
Keyword(s):  
Reinforcement Learning ◽  
Mobility Management ◽  
Network Architecture ◽  
Access Network ◽  
Optimal Placement ◽  
Network Function Virtualization ◽  
User Mobility ◽  
Radio Access Network ◽  
Network Function ◽  
Radio Access

Abstract To support various service requirements such as massive Machine Type Communications, Ultra-Reliable and Low-Latency Communications in 5G scenario, Network Function Virtualization (NFV) plays an important role in the 5G network architecture to manage and orchestrate network services. As the key network function responsible for mobility management, Access and Mobility Management Function (AMF) can be deployed flexibly at the edge of the radio access network to improve the performance of mobility management based on NFV. In this paper, the optimal placement of AMF is addressed based on Deep Reinforcement Learning (DRL) in a heterogeneous radio access network, which aims to minimize the network utility including the average delay of mobility management requests at AMF, the average wired hops to relay the requests and the cost of AMF instances. By considering time-varying features including user mobility and the arrival rate of user mobility management requests, an AMF optimal placement approach is proposed for the long term optimization. Simulation results show that the performance of the proposed DRL based AMF optimal placement approach outperforms that of the baselines.

scholarly journals Robust Baseband Compression Against Congestion in Packet-Based Fronthaul Networks Using Multiple Description Coding

Entropy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 433 ◽  
Author(s):  
Seok-Hwan Park ◽  
Osvaldo Simeone ◽  
Shlomo Shamai (Shitz)
Keyword(s):  
Access Network ◽  
General Purpose ◽  
Multiple Description Coding ◽  
Network Function Virtualization ◽  
Path Diversity ◽  
Network Function ◽  
Multiple Description ◽  
Radio Access ◽  
Multiple Routes ◽  
Description Coding

In modern implementations of Cloud Radio Access Network (C-RAN), the fronthaul transport network will often be packet-based and it will have a multi-hop architecture built with general-purpose switches using network function virtualization (NFV) and software-defined networking (SDN). This paper studies the joint design of uplink radio and fronthaul transmission strategies for a C-RAN with a packet-based fronthaul network. To make an efficient use of multiple routes that carry fronthaul packets from remote radio heads (RRHs) to cloud, as an alternative to more conventional packet-based multi-route reception or coding, a multiple description coding (MDC) strategy is introduced that operates directly at the level of baseband signals. MDC ensures an improved quality of the signal received at the cloud in conditions of low network congestion, i.e., when more fronthaul packets are received within a tolerated deadline. The advantages of the proposed MDC approach as compared to the traditional path diversity scheme are validated via extensive numerical results.

scholarly journals Adaptable and Automated Small UAV Deployments via Virtualization

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4116 ◽  
Author(s):  
Borja Nogales ◽  
Victor Sanchez-Aguero ◽  
Ivan Vidal ◽  
Francisco Valera
Keyword(s):  
Mobile Networks ◽  
Ad Hoc ◽  
Network Routing ◽  
Network Function Virtualization ◽  
Network Function ◽  
Fifth Generation ◽  
Aerial Vehicles ◽  
Small Uav ◽  
Functional Prototype ◽  
Practical Feasibility

In this paper, we present a practical solution to support the adaptable and automated deployment of applications of Small Unmanned Aerial Vehicles (SUAVs). Our solution is based on virtualization technologies, and considers SUAVs as programmable network platforms capable of executing virtual functions and services, which may be dynamically selected according to the requirements specified by the operator of the aerial vehicles. This way, SUAVs can be flexibly and rapidly adapted to different missions with heterogeneous objectives. The design of our solution is based on Network Function Virtualization (NFV) technologies, developed under the umbrella of the fifth generation of mobile networks (5G), as well as on existing Internet protocol standards, including flying ad hoc network routing protocols. We implemented a functional prototype of our solution using well-known open source technologies, and we demonstrated its practical feasibility with the execution of an IP telephony service. This service was implemented as a set of virtualized network functions, which were automatically deployed and interconnected over an infrastructure of SUAVs, being the telephony service tested with real voice-over-IP terminals.

Exploring SDN & NFV in 5G Using ONOS & POX Controllers

2021 ◽  
pp. 187-203
Author(s):  
Christos Bouras ◽  
Anastasia Kollia ◽  
Andreas Papazois
Keyword(s):  
Operating System ◽  
Mobile Networks ◽  
Data Center ◽  
Central Office ◽  
Software Defined Networking ◽  
Theoretical Research ◽  
Network Function Virtualization ◽  
Network Function ◽  
Cloud Networking ◽  
Experimental Findings

This article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.

scholarly journals A Multi-Provider End-to-End Dynamic Orchestration Architecture Approach for 5G and Future Communication Systems

2021 ◽  
Vol 11 (24) ◽  
pp. 11914
Author(s):  
José Olimpio Rodrigues Batista ◽  
Douglas Chagas da Silva ◽  
Moacyr Martucci ◽  
Regina Melo Silveira ◽  
Carlos Eduardo Cugnasca
Keyword(s):  
Mobile Networks ◽  
Software Defined Radio ◽  
Communication Systems ◽  
Quality Parameters ◽  
Network Function Virtualization ◽  
Economic Activities ◽  
Network Function ◽  
End To End ◽  
Horizontal Handover

Network segregation is the solution adopted in the IMT-2020 standardization of the International Telecommunications Union (ITU), better known as 5G networks (Fifth Generation Mobile Networks), under development to meet the requirements of performance, reliability, energy, and economic efficiency required by applications in the various verticals of current and near-future economic activities. The philosophy adopted for the IMT-2020 standardization relies on the use of Software-Defined Networking (SDN), Network Function Virtualization (NFV), and Software-Defined Radio (SDR), i.e., the softwarization of the network. Softwarization allows network segregation through its slicing, which is discussed herein this work. Network slicing is performed by a novel Orchestrator, as provided in IMT-2020, which maintains the end-to-end network slices independent of each other and performs horizontal handover when the possibility of a loss of Quality of Service (QoS) is predictively detected by monitoring quality parameters during operation. Therefore, the Orchestrator is dynamic, operates in uptime, and allows horizontal handover. Hence, it chooses the most appropriate telecommunication infrastructure provider and network operator to guarantee QoS and Quality of Experience (QoE) to end-users in each network segment. These features make this work modern and keep it aligned with the actions being carried out by ITU. Based on this objective, as the main result of this paper, we propose an effective architecture for implementing the Orchestrator, not only to contribute to the state of the art for 5G and beyond communication systems but also to generate economic, technological, and social impacts.

Sign in / Sign up

Export Citation Format

Share Document