scholarly journals PLANNING AND SIMULATION FOR RADIO ACCESS NETWORKS ON “SMALL CELLS” TECHNOLOGY FOR HETEROGENEOUS ENVIRONMENTS

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Gabriel Jaimes-Illanes
Keyword(s):  
Access Network ◽  
Development Planning ◽  
Economic Benefits ◽  
Traffic Load ◽  
Small Cells ◽  
Heterogeneous Environments ◽  
Technical Equipment ◽  
Technical Requirements ◽  
Radio Access ◽  
Technical Specifications

The document presents the planning and simulation of UMTS and LTE mobile telecommunications network by the use of Small Cells technology in heterogeneous environments solutions for real foray operators in Cochabamba to achieve efficiency in resource usage in a state of high traffic load of voice and data, and therefore achieve better utilities. The methodology is based on analytical development, planning, and simulation which take place in the first instance with the collection of information. In the following steps, the project requirements were identified, a vendor technical specifications comparison was made, and the Small Cell networks were designed by radio access network planning, cell distribution and dimensioning, transportation cadasters definition, technical equipment parametrization, and frequency plan determination. Finally a procedure of simulation for coverage predictions and design validation was made. It is concluded that the project is feasible and complies with technical requirements for land survey, services demand on voice and data, coverage for indoor or outdoor environments, mobility and transport users, parameters performance on RSCP, RSRP, RSRQ signal-to-noise ratio, capacity of users, specific scenario solutions and economic benefits on deployments.

scholarly journals Provisionamento de Recursos de Hardware em Redes Híbridas de Acesso por Rádio com Base no Efeito de Maré

2019 ◽  
Author(s):  
Igor W. S. Falcão ◽  
Rafael F. Vieira ◽  
Marcos C. da R. Seruffo ◽  
Diego L. Cardoso
Keyword(s):  
Access Network ◽  
Small Cells ◽  
Radio Access Network ◽  
Radio Access

A arquitetura C-RAN (Centralized Radio Access Network) é uma proposta para atender à alta demanda das redes de quinta geração (5G). Devido o tráfego de comunicação possuir um comportamento dinâmico em decorrência do “Efeito de Maré” (fenômeno responsável pela movimentação do fluxo de rede), a arquitetura atual, o D-RAN (Decentralized Radio Access Network) não garante o fornecimento eficiente de recursos. Este trabalho apresenta uma heurı́stica para o dimensionamento de recursos de hardware considerando o Número de Usuários Atendidos e Vazão Agregada. A abordagem atendeu a variabilidade do tráfego, maximizando a eficiência da BBU (BaseBand Unit) e quantificando as SC’s (Small Cells) necessárias para cobrir a demanda da rede.

scholarly journals Proactive Caching at the Edge Leveraging Influential User Detection in Cellular D2D Networks

2018 ◽  
Vol 10 (10) ◽  
pp. 93 ◽  
Author(s):  
Anwar Said ◽  
Syed Shah ◽  
Hasan Farooq ◽  
Adnan Mian ◽  
Ali Imran ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Community Detection ◽  
Access Network ◽  
Clustering Coefficient ◽  
Traffic Load ◽  
D2d Communications ◽  
Eigenvector Centrality ◽  
Radio Access ◽  
Caching Scheme ◽  
Influential Users

Caching close to users in a radio access network (RAN) has been identified as a promising method to reduce a backhaul traffic load and minimize latency in 5G and beyond. In this paper, we investigate a novel community detection inspired by a proactive caching scheme for device-to-device (D2D) enabled networks. The proposed scheme builds on the idea that content generated/accessed by influential users is more probable to become popular and thus can be exploited for pro-caching. We use a Clustering Coefficient based Genetic Algorithm (CC-GA) for community detection to discover a group of cellular users present in close vicinity. We then use an Eigenvector Centrality measure to identify the influential users with respect to the community structure, and the content associated to it is then used for pro-active caching using D2D communications. The numerical results show that, compared to reactive caching, where historically popular content is cached, depending on cache size, load and number of requests, up to 30% more users can be satisfied using a proposed scheme while achieving significant reduction in backhaul traffic load.

FluidNet: A Flexible Cloud-Based Radio Access Network for Small Cells

2016 ◽  
Vol 24 (2) ◽  
pp. 915-928 ◽  
Author(s):  
Karthikeyan Sundaresan ◽  
Mustafa Y. Arslan ◽  
Shailendra Singh ◽  
Sampath Rangarajan ◽  
Srikanth V. Krishnamurthy
Keyword(s):  
Access Network ◽  
Small Cells ◽  
Radio Access Network ◽  
Radio Access

scholarly journals Analysis Of User Throughput Based Predictive Mobility Load Balancing Using Logarithmic Regression Of Reference Signal Received Quality In Long Term Evolution Radio Access Network

2018 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Achmad Rizal Danisya ◽  
Rendy Munadi ◽  
Sofia Naning Hertiana
Keyword(s):  
Load Balancing ◽  
Access Network ◽  
Long Term Evolution ◽  
Traffic Load ◽  
Resource Block ◽  
Radio Access Network ◽  
Term Evolution ◽  
Radio Access ◽  
User Throughput

The improvement of Long Term Evolution (LTE) radio access network services is affecting the increased value of traffic load in its network, which is causing traffic unbalance between cells in LTE Radio Access Network (RAN). Users will be served with ineffective resource block allocation which will make the total of gained throughput are not optimal. A method is required to move network load from overloaded cells to underloaded cells in order to balance the resource block allocation optimally. By using NS-3.26 simulation, User Throughput Based (UTB) predictive Mobility Load Balancing (MLB) method is tested with RandomWalkMobilityModel for each user. This method produces an improvement of 2,29 % in average of total throughput of 63,33 % successful optimization.

Anniversary of the first national standards for geodetic instruments

2019 ◽  
Vol 946 (4) ◽  
pp. 20-25
Author(s):  
O. K. Golubkova ◽  
A.I. Spiridonov
Keyword(s):  
Public Service ◽  
Positive Impact ◽  
State Standards ◽  
National Standards ◽  
Technical Level ◽  
Instrument Making ◽  
The Public ◽  
Technical Requirements ◽  
Basic Parameters ◽  
Technical Specifications

State standards on the types, basic parameters of levels and theodolites as well as technical requirements were developed in CNIIGAiK in 1962–1963. The authors indicate the experience of developing the first State standards for geodetic instrument making, the difficulties encountered in developers. In this article the main stages of preparation of State standards, including action algorithm from technical specifications to submissions for the approval of the public service are marked step-by-step. The types of levels and theodolites, and the basic technical characteristics for each type are described. During 55 years the positive impact in the areas of production and application of standardized levels and theodolites, inter alia, streamlining the issuance of standard sizes of devices, increased production and improved their quality and technical level was revealed.

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