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The Importance of Integration Between Public Network and Private Network in 5G Era

October 9, 2021 by IPLOOK
The 5G network steps into rapid development stage in 2021. Constructed widely by operators, the public network evolves at full speed than ever before, while the deployment of private network is overshadowed. The status of most of the private networks are still equal to the technology of public 2G or 3G network.

Private network has clear characteristics (high-security, high-stability and low-costing) for application scenarios in various industries, which constrains the iteration of private network to some extent. Compared to the public network, the private network communication remains at small-scale and highly-dispersed deployment with lower R&D investment, which is one of the major causes of tardy development of private network technology.


private network and public network

The future tendency of deploying private 5G network
With the development of information technology, all industries are involved in the wave of digital transformation. Because of the evident characteristics of 5G technology (extensive coverage, wide bandwidth and low latency), deploying private 5G network is suitable and flexible in some fields such as safe-protection, industrial Internet, smart transportation and so on. For example, 5G UAV (Unmanned Aerial Vehicle) and 5G transport vehicle made contribution to the process of fighting against COVID-19.

Except from the data transmission, the reliability of ensuring critical communication capability is also significant for achieving effective administration of network. In this aspect, having specific technical advantages, legacy private network is still irreplaceable. No matter the private network is constructed by 4G technology or 5G technology, it is difficult for them to replace the function of legacy private network in vertical industries. Although there are many difficulties nowadays, deploying 5G technology to construct the private network telecommunication technology is the essential tendency.
 

As for the integration of public network and private network, IPLOOK provides two solutions:
Solution 1: sharing RAN between private network and public network -- deploying lightweight 5GC for enterprises
IPLOOK private network solution

Solution 2: the RAN of private network connects the 5GC control plane of public network, while the gNodeB of enterprises' private network and the edge UPF are deployed in the enterprises.
IPLOOK private network solution

Conclusion
It’s impossible for public network to fully take the place of private network because of the practical application requirements of private network differentiated from public network. In some special industries such as public transportation, public safety, financial and educational areas and so on, isolated from public network, private network is still needed at the aim of ensuring the safety of information and network administration.

In 5G era, the network functions must be enhanced with diverse applications which requires deeper integration of private network and public network.


Glossary
·  Public network, also called as WAN (Wide Area Network) and external network, can cover thousand of kilometers with several areas, cities, countries and states to provide long-distance communication.

·  Consisted by servers, terminals and network equipment worldwide, Internet is a kind of WAN (Wide Area Network), serving for the public.

·  Internal network is the LAN (Local Area Network) with several interconnecting computers in an area, supporting functions of e-mail, faxing, files management, software sharing and so on.

·  Private network generally means the professional network covering specific area which provides communication services for specific subscribers. Isolated from public network, private network is able to ensure reliable network coverage and prevent subscribers’ data from external attack.


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