scholarly journals Optimizing allocation and positioning in a disaggregated radio access network

2019 ◽  
Author(s):  
Felipe Freitas Fonseca ◽  
Sand Luz Correa ◽  
Kleber Vieira Cardoso
Keyword(s):  
State Of The Art ◽  
Access Network ◽  
Access Networks ◽  
Core Network ◽  
Improve Performance ◽  
The Core ◽  
Radio Access ◽  
Network Functions ◽  
Feasible Solutions ◽  
Communication Paths

Future wireless communication infrastructures, starting from 5G, will operate their radio access networks (RANs) based on virtualized functions distributed over a crosshaul, i.e., a transport solution integrating fronthaul and backhaul. Optimizing the resource allocation and positioning of the virtual network functions of a virtualized RAN (vRAN) is crucial to improve performance. In this paper, we propose a new optimization model to deal with VRAN functions allocation and positioning that seeks to maximize the level of centralization. Our model explores several representative functional splits, including the fully distributed remote unit (UK), while taking into account the limit imposed by the communication paths between the crosshaul and the core network. We compare our model with a state-of-the-art solution and show how our approach improves the centralization level in most of the scenarios, even considering the limit imposed by the core infrastructure. Our model also provides higher number of feasible solutions in most of the cases. Additionally, we investigate the positioning of the central unit (CU) and show that its placement with the core infrastructure is rarely the best choice.

scholarly journals Slicing the Core Network and Radio Access Network Domains through Intent-Based Networking for 5G Networks

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1710
Author(s):  
Khizar Abbas ◽  
Muhammad Afaq ◽  
Talha Ahmed Khan ◽  
Adeel Rafiq ◽  
Wang-Cheol Song
Keyword(s):  
Network Virtualization ◽  
Access Network ◽  
Automated System ◽  
Core Network ◽  
Network Slicing ◽  
Radio Access Network ◽  
The Core ◽  
Radio Access ◽  
Wide Range ◽  
Physical Infrastructure

The fifth-generation mobile network presents a wide range of services which have different requirements in terms of performance, bandwidth, reliability, and latency. The legacy networks are not capable to handle these diverse services with the same physical infrastructure. In this way, network virtualization presents a reliable solution named network slicing that supports service heterogeneity and provides differentiated resources to each service. Network slicing enables network operators to create multiple logical networks over a common physical infrastructure. In this research article, we have designed and implemented an intent-based network slicing system that can slice and manage the core network and radio access network (RAN) resources efficiently. It is an automated system, where users just need to provide higher-level network configurations in the form of intents/contracts for a network slice, and in return, our system deploys and configures the requested resources accordingly. Further, our system grants the automation of the network configurations process and reduces the manual effort. It has an intent-based networking (IBN) tool which can control, manage, and monitor the network slice resources properly. Moreover, a deep learning model, the generative adversarial neural network (GAN), has been used for the management of network resources. Several tests have been carried out with our system by creating three slices, which shows better performance in terms of bandwidth and latency.

Nýting ljósleiðara á Íslandi

2017 ◽  
Vol 23 ◽  
pp. 32-36
Author(s):  
Sæmundur E. Þorsteinsson
Keyword(s):  
Mobile Communication ◽  
Rural Areas ◽  
Communication Systems ◽  
Access Network ◽  
Access Networks ◽  
Optical Fibres ◽  
Core Network ◽  
Leading Role ◽  
Telecommunication Systems ◽  
Optical Ring

General deployment of optical fibre technology commenced in the eighties. Its introduction revolutionised the telecommunications arena and has become the foundation of most telecommunication systems in use today. Optical fibres connect continents and countries, are used in core and access networks and for backhauling of mobile communication systems. The internet would barely exist without optical fibres and globalisation would hardly have seen the dawn of light. Three submarine optical cables connect Iceland to the outside world; Farice and Danice connect Iceland to Europe and Greenland Connect to America via Greenland. The optical ring around Iceland constitutes the Icelandic core network. The ring passes by nearly all villages and towns and fibre deployment in the access network has reached an advanced state. Fibre deployment in rural areas has already begun and will presumably be finished in a few years. Iceland plays a leading role in fibre deployment. In this paper, fibre utilisation in Iceland will be described, both in core and access networks. Three different architectures for fibre deployment in the access network will be described. Competition on fibre networks will also be discussed.

scholarly journals End-to-End Network Slicing in Radio Access Network, Transport Network and Core Network Domains

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 29525-29537 ◽  
Author(s):  
Xu Li ◽  
Rui Ni ◽  
Jun Chen ◽  
Yibo Lyu ◽  
Zhichao Rong ◽  
...  
Keyword(s):  
Access Network ◽  
Transport Network ◽  
Core Network ◽  
Network Slicing ◽  
Radio Access Network ◽  
Network Transport ◽  
Radio Access ◽  
End To End

scholarly journals Evaluation of Interference in Ultra-Dense 5G Radio Access Networks with Beamforming

Telecom IT ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 35-59
Author(s):  
G. Fokin
Keyword(s):  
Radiation Pattern ◽  
Antenna Arrays ◽  
Access Network ◽  
Beam Width ◽  
Base Station ◽  
Access Networks ◽  
Base Stations ◽  
Radio Access Network ◽  
Radio Access Networks ◽  
Radio Access

In this paper, we investigate the dependence of the level of intersystem interference on the beam width of the adaptively formed antenna radiation pattern and the territorial separation of neighboring devices in ultra-dense 5G radio access networks. The results of simulation modeling of a radio access network based on 19 base stations with the parameterization of the antenna array gain by the width of the radiation pattern in the horizontal plane show that when the base station beam is di-rected to the user device and narrowed from 360° to 5°, the level of intrasystem interference decreases by 15 dB compared with the case of omnidirectional antennas. The results of simulation of a radio access network based on 19 three-sector base stations with planar antenna arrays of 64 elements illustrate a significant reduction in the level of interference in comparison with the case of omnidirectional antennas and, in order to obtain zones of a positive signal-to-noise ratio, confirm the need for a territorial separation of neighboring devices by 10–20 % of the range of radio coverage.

Delay-Sensitive Network Selection and Offloading in LTE-A and Wi-Fi Heterogeneous Networks

2020 ◽  
pp. 2150120
Author(s):  
Chun-Chuan Yang ◽  
Jeng-Yueng Chen ◽  
Yi-Ting Mai ◽  
Yi-Chih Wang
Keyword(s):  
Traffic Congestion ◽  
Access Network ◽  
Access Point ◽  
Base Station ◽  
Network Selection ◽  
Core Network ◽  
Delay Sensitive ◽  
Radio Access ◽  
Lte Advanced ◽  
Average System

LTE-Advanced (LTE-A) offloading is concerned about alleviating traffic congestion for the LTE-A network, which includes the core network and the radio access network (RAN). Due to the scarcity of the radio resource, offloading for the LTE-A RAN is more critical, for which an efficient way is to integrate Wi-Fi with LTE-A to form a heterogeneous RAN environment. An LTE-A UE (User Equipment) with the wi-fi interface can therefore access the Internet via an LTE-A base station of Evolved Node B (eNB) or a wi-fi Access Point (AP). In this paper, wireless network selection for UEs with delay-sensitive traffic in the heterogeneous RAN of LTE-A and wi-fi is addressed. Based on the queueing model of M/G/1, a novel network selection and offloading scheme, namely Delay-Sensitive Network Selection and Offloading (DSO), is proposed. The average system time at LTE-A eNBs and wi-fi APs calculated according to M/G/1 is used for network selection as well as offloading operations in DSO. The benefit of DSO in terms of satisfying the delay budget of UEs and load balancing is demonstrated by the simulation study.

scholarly journals Performance Evaluation of Triple Play Services Delivery with E2E QoS Provisioning

2010 ◽  
Vol 2010 ◽  
pp. 1-14
Author(s):  
Nikolaos Zotos ◽  
Evangelos Pallis ◽  
Anastasios Kourtis
Keyword(s):  
Performance Evaluation ◽  
Video Streaming ◽  
Access Network ◽  
Core Network ◽  
Qos Provisioning ◽  
High Quality ◽  
The Core ◽  
Services Delivery ◽  
Quality Video ◽  
High Quality Video

The creation and wide use of new high quality demanding services (VoIP, High Quality Video Streaming) and the delivery of them over already saturated core and access network infrastructures have created the necessity for E2E QoS provisioning. Network Providers use at their infrastructures several kinds of mechanisms and techniques for providing QoS. Most known and widely used technologies are MPLS and DiffServ. The IEEE 802.16-2004 standard (WiMAX) refers to a promising wireless broadband technology with enhanced QoS support algorithms. This document presents an experimental network infrastructure providing E2E QoS, using a combination of MPLS and DiffServ technologies in the core network and WiMAX technology as the wireless access medium for high priority services (VoIP, High Quality Video Streaming) transmission. The main scope is to map the traffic prioritization and classification attributes of the core network to the access network in a way which does not affect the E2E QoS provisioning. The performance evaluation will be done by introducing different kinds of traffic scenarios in a saturated and overloaded network environment. The evaluation will prove that this combination made feasible the E2E QoS provisioning while keeping the initial constrains as well as the services delivered over a wireless network.

scholarly journals Analisa Regulasi Network Sharing Berbasis Multi Operator Core Network (MOCN)

2019 ◽  
Vol 9 (3) ◽  
pp. 141
Author(s):  
Cholid Mawardi
Keyword(s):  
Penetration Rate ◽  
Access Network ◽  
Core Network ◽  
Radio Access Network ◽  
Radio Access ◽  
Network Sharing

Model kerja sama antar operator telekomunikasi sudah menjadi tren pada kondisi saat ini, selain menjadi bagian strategi untuk mengembangkan bisnisnya, juga menjadi solusi efisiensi pengeluaran operator. Kerja sama skema Multi Operator Core Network (MOCN) memiliki kemampuan berbagi spektrum dalam skema kerja samanya. Di beberapa negara, network sharing jenis MOCN sudah banyak diterapkan, di Malaysia dan Hongkong sejak tahun 2012 dan 2013 telah memakai jenis network sharing tersebut. Di Indonesia, pemerintah belum menetapkan regulasi yang sesuai serta memilki dampak bagi kesiapan operator bagi revenue yang akan diperoleh jika MOCN sudah memiliki regulasi.Metode Penelitian serta kajian yang dilakukan merujuk pada sistem Benchmarking pada negara yang sudah menerapkan regulasi baik MOCN maupun sistem Multi Operator Radio Access Network (MOCN). Kajian ini diperlukan untuk membandingkan apakah kondisi negara tersebut dari paramater jumah penduduk, penetration rate, hingga teknologi yang dipakai bisa juga diterapkan di negara Indonesia Dari hasil penelitian ini juga, dapat merekomendasikan MOCN pada penyelenggaraan di Indonesia dengan analisis benchmarking regulasi pada negara yang telah menerapkan MOCN, dengan keberhasilan negara yang sudah menerapkan MOCN maka akan menjadi peluang besar untuk negara Indonesia menerapkan MOCN dengan mengambil analisi terendah. Adapun analisis pangsa pasar dari data yang didapat dari operator, optimalisasi cakupan seluler dapat menjadi acuan dalam pelaksanaan MOCN demi pertumbuhan jaringan di daerah yang jarang penduduk dan mendukung pertumbuhan GDP serta pendapatan fiskal bagi negara.

scholarly journals State-of-the-Art Antenna Technology for Cloud Radio Access Networks (C-RANs)

10.5772/67352 ◽  
2017 ◽  
Author(s):  
Waleed Tariq Sethi ◽  
Abdullah Alfakhri ◽  
Muhammad Ahmad Ashraf ◽  
Amr G. Alasaad ◽  
Saleh Alshebeili
Keyword(s):  
State Of The Art ◽  
Access Networks ◽  
Cloud Radio Access Networks ◽  
Radio Access Networks ◽  
Radio Access
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