日本語 
Japan’s telecommunications industry seems to be stepping into a completely new realm of digital transformation as NTT DOCOMO unveils the first commercial 5G core network (5GC) in Japan, that is cloud-based on Amazon Web Services (AWS). This newly built in the cloud infrastructure marks an important milestone for the domestic telecom industry of Japan that integrates cloud computing, artificial intelligence, and cutting-edge network automation to drive the future of mobile services.
This launch is the collaboration between NTT DOCOMO, NEC Corporation, and AWS, and it aims at delivering scalability, reliability, and operational efficiency to the operator’s network that covers the whole country. Besides, the new design lays on a more extensive transformation of telecommunications infrastructure construction and management even with the advent of 5G and later 6G networks.
Japan’s First Commercial 5G Core on AWS
NTT DOCOMO made the commercial 5G core network available on February 26 2026 that is an new, innovative service on the network infrastructure.
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5G core network is the main control center of a mobile network, it routes and manages data, authorizes users, and delivers services to millions of connected devices. By relocating core network functions to the cloud environment, DOCOMO can easily adjust network capacity depending on the level of traffic while also enhancing service reliability and efficiency.
The system uses hybrid cloud setup which combines AWS public cloud services with DOCOMO’s own virtualization platform. Through this configuration, the telecom operator can continue to offer performance at the level of a carrier while taking advantage of the flexibility of cloud infrastructure.
AI-Driven Network Automation
One very distinctive feature of this new rollout is the integration of agentic AI for the automation of network design, network building, and network operations. DOCOMO along with its partners have created an AI-based system that automatically carries out major steps like configuration design, system deployment, and infrastructure control.
This strategy greatly cuts down the time it takes to build and install network infrastructure. In fact, the companies claim that by using AI-driven automation, the construction time of the 5G core network has been cut by approximately 80% compared to the traditional manual methods.
At the same time, the network incorporates AI programs that process live information coming from over one million network devices. This not only allows the immediate detection of problems via automation but also results in quicker responses to network incidents. Consequently, the time for resolving complicated issues has been slashed to almost half.
Advantages of a Cloud-Native 5G Core
Deploying a cloud-native 5G core will have a number of benefits compared to conventional telecom infrastructures, that heavily rely on special purpose hardware and on-premises data centers.
Firstly, cloud facilities inherently support dynamic scalability which enables operators to respond very quickly to traffic increase by enhancing network capacity and reducing it when traffic is low. This way, network performance can be naturally improved while operation costs can be kept at a minimum.
Secondly, exploiting cloud facilities gives telecom providers the opportunity to bring advanced technologies like AI, automation, and edge computing into their networks without difficulties.
Thirdly, networks that are based in the cloud can lead to the faster introduction of new digital services like private 5G networks, industrial IoT solutions, and low-latency applications such as autonomous vehicles and smart city technologies.
Opportunities for Businesses and Emerging Technologies
The implementation of 5G networks will open up massive opportunities for companies that are part of Japan’s digital economy. With 5G offering faster and more stable connections, businesses will be able to launch innovative solutions such as automated manufacturing, interconnected healthcare, or even self-driving supply chains.
Car manufacturing, robots, and building smarter cities with high-speed internet and AI-managed networks are just a few examples where industries can reap substantial benefits.
Additionally, entrepreneurs and tech creators will find cloud-native telecommunications systems a flexible environment in which to invent new services exploiting 5G features.
Toward the Future of AI-Powered Telecom Networks
Launching Japan’s first commercial 5G core network on AWS is a significant achievement in the telecommunication industry’s shift towards cloud-native infrastructure. By integrating cloud computing, AI, and automated network operations, DOCOMO is not only enhancing the current technology but also envisioning the future of telecommunications networks – their creation and management.
As the number of 5G users is set to rise and research into 6G is gaining momentum, telecom architectures based in cloud are expected to be a normal thing. It helps put Japan’s telecom industry among the leaders of next-generation network innovations and opens the doors for new business and digital service opportunities throughout the economy.
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