Optimal Enterprise 5G model selection, based on functionality, safety, and cost performanceTransformative 5G in the IoT Era: how to realize its potential, from verification to implementation

5G is one of the key digital infrastructure technologies that support digital transformation (DX), with its spread beginning to accelerate considerably beyond that of conventional communications network technologies. The industry is paying close attention to its principal advantages such as ultra-high speed, low latency, and multiple simultaneous connections, all of which proved difficult with conventional enterprise communications technology. Despite this, however, we are only seeing a small number of 5G network implementation cases in the industry.
In this article, Dr. Jianmin Jin, Chief Digital Economist of the Fujitsu Global Marketing Unit, assesses the most appropriate models for Enterprise 5G, as well as providing an explanation as to why enterprises are hesitant when it comes to adopting 5G networks. He also discusses how we can eliminate the main factors that are hindering the active introduction of 5G, as well as which factors are contributing to its successful deployment around the world.
Outpacing conventional 4G and LTE – the spread of 5G is accelerating
In addition to the consumer communications services targeted by 4G/LTE, 5G is expected to strengthen the myriad Enterprise 5G services being developed for various industries. 5G networks with features such as "ultra-high speed and large capacity," "ultra-low latency" and "multiple simultaneous connections" have the potential to provide significant value to businesses entering the IoT era. There are, however, a number of issues regarding the usefulness and feasibility of the technology, its capability to ensure data security, and indeterminate cost performance that are causing companies to hold off adoption, despite its potential.
On the other hand, we are seeing an accelerating investment in 5G networks, as the world’s next-generation communications infrastructure, with more than 80% of carrier capital expenditures likely to be allocated to 5G networks. In fact, the early consumer implementation of public 5G is already starting to spread more than four times faster than 4G and LTE. In addition to a private 5G network that uses the spectrum dedicated to an enterprise, there is also an Enterprise 5G, which uses part of a public base station and core networks virtually. In short, by combining 5G's unique slicing technology and telco edge computing, it becomes possible to create an enterprise proprietary network (for the exclusive use of Public 5G) that balances both cost performance and security requirements. These multiple application patterns can meet the diverse needs of enterprises. In fact, in the Enterprise 5G, whose usefulness has been verified and which has already been introduced in multiple countries, there are diverse examples where a company’s own network has been created partly using public 5G, in addition to private 5G.
Major carriers, leading IT vendors, telecom equipment manufacturers, and start-ups around the world are accelerating their business activities in the Enterprise 5G field. We anticipate that user companies will also start to ramp up their shift from 5G network verification to implementation in the near future.
What is edge computing? : A computing process that is done closer to the user side in communications network. It is also called "MEC" or (Multi-Access Edge Computing) these days.
Understanding the Gap between 5G’s technological superiority and its low adoption rate
We now recognize the effectiveness of digital technologies, thanks in no small part to the pandemic caused by a new coronavirus infection. The DX (digital transformation) is rapidly spreading from industry and government to reach all parts of society. In response, the expectation levels for 5G as a next-generation network infrastructure are also rising. In particular, the deployment of 5G in various industries, characterized by "ultra-high speed and large capacity," "ultra-low latency" and "multiple simultaneous connections" is highlighting potential 5G killer applications that bring about innovation. To date, the industry has evaluated the wireless network technology based on how it impacts consumer use cases. In the 5G era, however, enterprise use cases are expected to play a more important role. Enterprise 5G technology is moving beyond the boundaries of consumer public network commercialization, with verification taking place around the world as well as selective use case implementations.
One of the reasons why corporate users, who are on the demand side, are paying attention to Enterprise 5G is that the number of smart devices has rapidly increased and the IoT era, which is the era of big data utilization, has already started (see Figure 1). In particular, the number of industrial IoT devices is poised to surpass the number of communications devices used by people in general. Furthermore, by providing a 5G network infrastructure capable of reliably transmitting large amounts of recorded data and real-time data, it becomes possible to fully utilize next-generation digital technologies such as AI, IoT, edge computing, AR/VR, and blockchain. This will lead to the arrival of a Digital by Default era (true digital age).
Figure 1: IoT Device Numbers - World Transition and Forecast
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Figure 2: Prospect for Carriers’ 5G-Related Share in Capital Investment (2021 -2025)
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Against this background, industry needs to act in preparation for the arrival of a new era of digital transformation.
Bridging the gap by expanding the use of public 5G
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Figure 3: Network Slicing to Meet Company/Industry Needs
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Enterprise 5G Network Selection Models and Use Case Examples
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Figure 4: Enterprise 5G and Public 5G Network Configurations (Conceptual diagram)
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1. SNPN Model (where the network is physically independent)
As shown in Figure 4, a company must physically build the entire base station, core network, and data transmission network that make up a 5G network. An available frequency range can be one of the following:
- Spectrum acquired by the user company
- Spectrum offered by a carrier for exclusive use by the user company
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Figure 5: Private 5G Utilization at Fujitsu Oyama Plant
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2. PNI-NPN Model (Model to share public 5G physically)
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Figure 6: Conceptual Diagram of PNI-NPN Models (Shared Models) for Enterprise Dedicated Networks
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Figure 7: Hybrid 5G Network Example Fusing Private 5G and Public 5G
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Figure 8: Dedicated 5G Slicing Network Utilization at Haier Industrial Park
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Enterprise 5G selection criteria: Balancing functionality, safety and cost
In summary, the user side requirements for 5G networks revolve around the following three points.
- Meeting the different needs of each use case for 5G functionality (Diversity and Flexibility)
- Satisfying data security (safety)
- Possibility of self-definition/self-designing/self-management (Network agility)
However, when considering specific use cases, it is not necessary to satisfy each of these requirements simultaneously to the same degree. In many cases, businesses hesitate to adopt 5G networks due to the trade-off between network security and the introduction costs, even though they recognize its business value.
Table 1: Features of Enterprise Dedicated 5G Networks











