# Oceania's 5G Multi-Tier Fixed Wireless Access Link's Long-Term Resilience and Feasibility Analysis
## 5 Conclusions  
To attain critical performance attributes like up to 10 Gbps data speed, 99.99% availability, and 99.99% reliability, 5G networks running in higher frequency bands must have 100% network coverage. However, inaccurate coverage estimates can adversely affect network performance in two ways: (i) coverage underestimation would result in overlap among neighboring cells, resulting in inter-cell interference; (ii) coverage overestimation may lead to poor reception at cell edges. Therefore, an essential task is the accurate estimation and planning of RF coverage. That is covered in this study, along with high-level implementation and accurate estimation of the tilting angles of the antennas. It covers RF link budget analysis, network layout design with cell aggregation, propagation modeling, and transmission site design with integrated phased array MIMO antennas. Wave propagation, 5G urban link analysis, and radio coverage of small-cell 5G transmitters are also included in the study using the shooting and bouncing ray tracing technique with different amounts of reflections, diffractions, and launched rays. The improvement regarding SNR and capacity using 5G antenna arrays was examined. The research indicates that deploying the suggested 5G coverage in Fiji's vast but sparsely inhabited regions would cost more money. The conventional telecommunications infrastructure that is currently in use is more lucrative for the less populated areas of Oceania and Fiji.  
This paper also discusses the practical deployment obstacles that must be solved for a quicker rollout of the 5G network, including the cost of spectrum, precise cell site planning, the acquisition of thousands of new cell site sites, 5G mobile devices, and backhaul. However, a few elements, such as spectrum licensing costs, site building costs, electrical grid tariffs, staff salaries, depreciation, etc., were not considered in this work. Future extensions of this study might involve considering these elements.  
Conceptualization, S.S.; methodology, S.S.; software, S.S.; validation, S.S., J.R.-S., I.D. and X.F.; formal analysis, S.S.; investigation, S.S. and J.R.-S.; resources, S.S. and I.D.; data curation, S.S. and I.D.; writing--original draft preparation, S.S. and J.R.-S.; writing--review and editing, S.S. and J.R.-S.; visualization, S.S., J.R.-S., I.D. and X.F.; supervision, I.D. and X.F.; project administration, S.S. All authors have read and agreed to the published version of the manuscript.  
**Funding:** This research received no external funding.  
**Data Availability Statement:** Re-analysis of previously published data that are freely accessible at the sites listed in the reference section served as the basis for the analysis in this article.  
**Acknowledgments:** The author appreciates all the co-authors' contributions and assistance with this paper. The author also wants to express their gratitude to the anonymous reviewers for their astute comments, which will enable us to enhance the quality of this paper. Special thanks go out to [PERSON], Dean College of Engineering Science & Technology, Fiji National University, Fiji Island, CEO of Telecom Fiji Limited (TFL) [PERSON], CTO of TFL Mesake Tuinabua, and TFL technical team for their assistance in providing all required information during the simulation and the writing of this article.  
**Conflicts of Interest:** The authors declare no conflict of interest.