A survey on various handover technologies in 5G network using the modular handover modules

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sanjay Sudhir Kulkarni ◽  
Arjav A. Bavarva
Keyword(s):  
Performance Evaluation ◽  
High Reliability ◽  
Access Network ◽  
5G Networks ◽  
Handover Management ◽  
Research Gaps ◽  
Research Papers ◽  
Content Type ◽  
Radio Access ◽  
Reliable Communications

Purpose Fifth-generation (5G) networks play a significant role in handover methods. 5G wireless network is open, flexible and highly heterogeneous along with the overlay coverage and small cell deployments. Handover management is one of the main problems in the heterogeneous network. Also, handover satisfies the needs of ultra-reliable communications along with very high reliability and availability in 5G networks. Handover management deals with every active connection of a user’s device, which moves the connection between the user’s device and the counterparty from one network point to another. Thus, the handover decision determines the best access network and also decides whether the handover is performed or not. Design/methodology/approach The main intention of this survey is to review several existing handover technologies in 5G. Using the categories of analysis, the existing techniques are divided into different techniques such as authentication-based techniques, blockchain-based techniques, software-defined-based techniques and radio access-based techniques. The survey is made by considering the methods such as used software, categorization of methods and used in the research works. Furthermore, the handover rate is considered for performance evaluation for the handover techniques in 5G. The drawbacks present in the existing review papers are elaborated in research gaps and issues division. Findings Through the detailed analysis and discussion, it can be summarized that the widely concerned evaluation metric for the performance evaluation is the handover rate. It is exploited that the handover rate within the range of 91%–99% is achieved by three research papers. Originality/value A survey on the various handover mechanisms in 5G networks is expected in this study. The research papers used in this survey are gathered from different sources such as Google Scholar and IEEE. Also, this survey suggests a further extension for the handover mechanism in 5G networks by considering various research gaps and issues.

scholarly journals Scalable Edge Computing Deployment for Reliable Service Provisioning in Vehicular Networks

2019 ◽  
Vol 8 (4) ◽  
pp. 51 ◽  
Author(s):  
Federico Tonini ◽  
Bahare Khorsandi ◽  
Elisabetta Amato ◽  
Carla Raffaelli
Keyword(s):  
Vehicular Networks ◽  
Programming Model ◽  
High Reliability ◽  
Cost Optimization ◽  
Access Network ◽  
Computational Effort ◽  
Edge Computing ◽  
Hybrid Strategy ◽  
Radio Access ◽  
Multi Access

The global connected cars market is growing rapidly. Novel services will be offered to vehicles, many of them requiring low-latency and high-reliability networking solutions. The Cloud Radio Access Network (C-RAN) paradigm, thanks to the centralization and virtualization of baseband functions, offers numerous advantages in terms of costs and mobile radio performance. C-RAN can be deployed in conjunction with a Multi-access Edge Computing (MEC) infrastructure, bringing services close to vehicles supporting time-critical applications. However, a massive deployment of computational resources at the edge may be costly, especially when reliability requirements demand deployment of redundant resources. In this context, cost optimization based on integer linear programming may result in being too complex when the number of involved nodes is more than a few tens. This paper proposes a scalable approach for C-RAN and MEC computational resource deployment with protection against single-edge node failure. A two-step hybrid model is proposed to alleviate the computational complexity of the integer programming model when edge computing resources are located in physical nodes. Results show the effectiveness of the proposed hybrid strategy in finding optimal or near-optimal solutions with different network sizes and with affordable computational effort.

UTILIZATION OF NETWORK POSITIONING METHODS IN THE 5G ECOSYSTEM

2020 ◽  
Author(s):  
Г.А. ФОКИН
Keyword(s):  
Access Network ◽  
Technological Capabilities ◽  
5G Networks ◽  
Positioning Accuracy ◽  
Radio Communications ◽  
Radio Access Network ◽  
Radio Stations ◽  
Location Data ◽  
Radio Access ◽  
Device Location

Анализируются особенности использования сетевого позиционирования при построении и функционировании экосистемы 5G. Показано, что данные о местоположении являются средством повышения показателей функционирования сети радиодоступа 5G, а новые технологические возможности самой сети способствуют повышению показателей позиционирования радиостанций и служат стимулом к совершенствованию технологий определения местоположения. Приводится обзор особенностей организации радиосвязи на основе данных о местоположении устройств и формулируются тенденции развития сетевого позиционирования в сетях 5G. New features of the network positioning utilization in the construction and operation of the 5G ecosystem are analyzed. It is shown that location data is a means for improving the performance of the 5G radio access network, and the new technological capabilities of the 5G radio access network itself contribute to increasing the positioning accuracy of radio stations and serve as an incentive to improve location technologies. An overview of the features of radio communications organization based on device location data is given and trends in the development of network positioning in 5G networks are formulated.

scholarly journals An Elastic Optical Network-based Architecture for the 5G Fronthaul

2018 ◽  
Author(s):  
Mateus Riva ◽  
Henrique Donâncio ◽  
Felipe R. Almeida ◽  
Gustavo B. Figueiredo ◽  
Rodrigo I. Tinini ◽  
...  
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Access Network ◽  
Wait Time ◽  
Average Difference ◽  
5G Networks ◽  
Average Wait Time ◽  
Cloud Radio Access Network ◽  
Elastic Optical Network ◽  
Radio Access

In 5G networks, the traffic demands are expected to increase significantly. To deal with this problem, many research efforts focus on TWDMPON for the fronthaul. However, TWDM-PON suffers from the issue of wasted bandwidth when a demand is smaller than the channel. In order to avoid this inefficiency, we propose an OFDM-PON supported architecture for the Cloud Radio Access Network (C-RAN) topology to implement the technology of elastic optical networks into C-RAN. Experiments show that OFDM-PON allows for improved usage of the bandwidth (between 145% and 218% improvement), similar average wait time for requests (average difference below 7%), and similar request loss (average difference below 2%) in comparison to TWDM.

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