Home > Corporate Information > News Releases > 2025 > February

News Release

February 25, 2025
Nippon Telegraph and Telephone East corporation

Release of the Local 5G(Private 5G) Optimization Project'Joint Demonstration Report Version 1.0'

Tokyo, February 25, 2025 - NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION (President & CEO: Naoki Shibutani, (hereinafter referred to as "NTT East")) launched the "Local 5G Optimization Project" (hereinafter referred to as the L5G Optimization Project)*1 on November 6, 2023, with the goal of further reducing system costs and enhancing convenience to accelerate the expansion and adoption of local 5G. Since then, we have been working on joint demonstrations with 26 participating companies*2. And, we have published the "Joint Demonstration Report Version 1.0" *3 as a summary of results and insights of our activities so far. Through over 300 verification scenarios, valuable insights have been gained regarding interoperability, performance, and considerations for multi-vendor integration. These insights are crucial for the deployment of local 5G, and we expect the report to be utilized for the integration of local 5G in wide variety of projects. NTT East will continue to share the achievements globally, for accelerating the societal implementation of local 5G.

1. Release of the "Joint Demonstration Report Version 1.0"

The equipment that constitutes a local 5G system is diverse in the market, in terms of functionality, performance and cost. As a result, combining equipment from different(multi)-vendor(s) to meet user requirements could be potential to offer best-of breed solutions. On the other hand, single vendor architecture is popular due to less complexity and lower costs for integration.

In addition, enterprise solutions with Local 5G are expected to provide end-to-end robust security feature through strict subscriber managements and SIM technology. However, most of IoT devices cannot accommodate agent-based endpoint security, one of the most popular security solutions for computer devices and smart phone. Once these vulnerable IoT devices connect to external networks, they would be exposed to a variety of threats.

In this report, we have showed the successful combinations of different vendor equipment interconnections, points to consider during interconnection, and performance metrics such as throughput and latency for each combination. We have also included the results of the operation of various security solutions available in the market.

(1)Interconnection(Interoperability test) Demonstration Results between Local 5G Devices

Participating companies brought their products to NTT East’s lab*4 to work on interconnection tests. 265 verification scenarios have been completed, with a success rate of approximately 96%. This report shows the successful combinations. Especially, resolved combinations of which connection tests initially failed are highlighted, along with key considerations for successful interconnection. Furthermore, performance test results such as throughput based on device specifications and latency during 4K video transmission are showed in the report.

(2)Security Measures Enhancement Demonstration Results

We have been working on security verification test in multi-vendor configurations, by utilizing the security solutions of participating companies. To date, the verification test has been completed with 44 combinations, achieving a success rate of approximately 90%. This report details the confirmed operations and effectiveness in tests.

2. Future Plan of the Project

Through the demonstrations in the L5G Optimization Project, it has been proven that interconnection between devices provided by different vendors is highly feasible. However, multi-vendor architecture individually requires time-consuming parameter tuning for each use cases, that increase integration costs. In order to resolve this problem, we are planning to complete a demonstration utilizing the RIC*5 (RAN Intelligent Controller) specified by the O-RAN ALLIANCE*6 to achieve autonomous and automated parameter tuning by the end of this year.

Additionally, we will continue to advance further demonstrations for various use cases. Through the achievements of this project and co-creation with participating companies, we aim to develop further application of local 5G, promote industrial DX, and contribute to solving social issues.

  • *5RIC (RAN Intelligent Controller) is a controller for advanced control of radio access networks, as specified by the O-RAN ALLIANCE. It is capable of analyzing information collected from base stations and controlling communication quality autonomously and automatically.
  • *6O-RAN (Open Radio Access Network) ALLIANCE is an industry organization that formulates standard specifications for the purpose of promoting the openness and intelligence of next-generation radio access networks, including 5G.

Contact Information for Customer Inquiries Regarding This Matter

NTT East, Network Business Promotion Headquarters, Wireless & Sensing Business Promotion Office
EMAIL: L5G-OptimizationPJ-gm@east.ntt.co.jp

Information is current as of the date of issue of the individual press release.
Please be advised that information may be outdated after that point.

PDF Files require Adobe Reader software which is a free download from

Page Top