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Fujitsu and NEC Significantly Improve Efficiency of Base Station Interoperability Testing for the Post-5G Era - Time for testing reduced by nearly 30% compared to other vendors - Fujitsu.com / NEC.com
Fujitsu and NEC Significantly Improve Efficiency of Base Station Interoperability Testing for the Post-5G Era

 

PRZOOM - /newswire/ - Tokyo, Japan, 2023/07/12 - Time for testing reduced by nearly 30% compared to other vendors - Fujitsu.com / NEC.com. NEC; TSE: 6701

   
 
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As part of the "Research and Development Project of the Enhanced Infrastructures for Post-5G Information and Communication Systems" under the New Energy and Industrial Technology Development Organization (NEDO), NEC Corporation (NEC) and Fujitsu Limited (Fujitsu) are conducting research and development of a technology for testing the interoperability of post-5G base stations compliant with O-RAN specifications. A connectivity testing environment using this technology was constructed at NEC's U.K. laboratories and Fujitsu's U.S. laboratories, and tests were conducted from August 2021 to June 2023. By automating the end-to-end process of extracting optimal test scenarios, generating parameters, and determining acceptability of test results, the two companies have succeeded in significantly improving efficiency. The interoperability testing time for base stations of different vendors was reduced by more than 30%, assuming the commercial environment of overseas telecommunications carriers (operators).

Going forward, the two companies will utilize the testing technology developed in this project for joint testing with operators and base station equipment vendors in Japan and overseas to shorten the time required to deploy systems that combine O-RAN compliant base station equipment from different vendors. They will aim to contribute to the revitalization of the telecommunications infrastructure market by supporting the global spread and development of open 5G networks.

1. Background
As digital transformation (DX) advances in various industries, fifth-generation mobile communications systems (5G) are being deployed globally as the infrastructure for DX. In the post-5G era, ultra-low latency, massive simultaneous connectivity, and other 5G functions will be further enhanced and become more widespread. This will lead to even lower power consumption and wider support for virtualization of networks, further driving the expansion of the telecommunications infrastructure market, including the replacement of existing base station equipment.

To provide customers with higher quality communication services, operators are increasingly choosing the most suitable base station equipment from a variety of vendors for use in their own networks.

In response, the O-RAN Alliance*1, an industry group composed of telecommunications carriers and manufacturers from around the world, has promoted standardization for connections between multiple base station devices and has formulated conditions for connecting base stations from different vendors. However, testing the operability of connected devices is time-consuming because it must be performed by the operator, and even longer time is required if re-testing must be conducted to resolve defects. This, therefore, hinders the deployment of equipment conforming to O-RAN specifications.

To address this problem, NEC and Fujitsu have established test environments in the U.K. and North America, which are foreseen as upcoming O-RAN markets, as part of the above NEDO project*2. From August 2021 to June 2023, NEC's U.K. laboratories and Fujitsu's U.S. laboratories conducted operational testing using a combination of profiles*3 and base station equipment vendors used by various international operators in actual commercial environments in efforts to develop a technology that streamlines the process and shortens the time required to verify interoperability.

2. Results of the joint efforts
NEC and Fujitsu have jointly developed a technology to automate the testing of interoperability between base station equipment from various vendors at the O-RAN fronthaul*4. They have enhanced the functionality to support the actual connection conditions used by operators in different countries and regions. This technology includes proprietary technologies such as the FrontHaul Analyzer (FHA)*5, which connects base station equipment to verify fronthaul protocol; the Pseudo-DU (P-DU)*6, which performs unit testing of radio units (RU); a test scenario extraction tool*7 that automates each verification process; a test parameter modification tool*8; and a test result assessment tool*9 (Figure 1).

Interoperability at the O-RAN fronthaul was tested using multiple combinations of base station equipment from different vendors and operating conditions assuming actual commercial environments of operators in Europe and North America at the two companies’ laboratories in the U.K. and the U.S. Automation of testing using the technology developed through the project reduced testing time by more than 30% compared with conventional manual testing.

Reducing the interoperability testing time will enable operators to shorten the lead time for deploying systems that combine O-RAN compliant base station equipment from different vendors. This will contribute to the advancement of open configurations in 5G networks currently in widespread use, as well as the construction of new networks in anticipation of future post-5G deployments.

3. Future plans
Going forward, NEC and Fujitsu will further utilize the technology developed in this project and the test environment for the technology in joint testing with operators and base station equipment vendors in Japan and internationally to shorten the time required to deploy O-RAN compliant equipment. By doing so, they will aim to contribute to the revitalization of the telecommunications infrastructure market by supporting the global spread and development of open 5G networks.

[Notes]

(*1)O-RAN Alliance:
The Open Radio Access Network Alliance (O-RAN Alliance) is an industry group that promotes standardization with the aim of realizing open and up-scalable next-generation wireless access networks such as 5G.
(*2)NEDO Project:
Project name: Research and Development Project of the Enhanced Infrastructures for Post-5G Information and Communication Systems / Development of Post-5G Information and Communication Systems / Development of Technologies for Evaluating and Testing Interoperability between Base Station Equipment
Project period: FY2020 to FY2023
(*3)Profile:
Refers to the conditions for operating the base station. It is a combination of operating conditions related to telecommunications, such as the specification of the wireless communication methods and the frequencies used.
(*4)O-RAN fronthaul:
The interface between the base unit (CU/DU) and the radio units (RU) of base station equipment standardized for O-RAN specifications.
(*5)FrontHaul Analyzer (FHA) for verifying the fronthaul protocol:
A technology that verifies the normality of the fronthaul protocol (a specified procedure for transmitting and receiving M-Plane and CUS-Plane data on the fronthaul) based on O-RAN specifications.
(*6)Pseudo-DU (P-DU) for unit testing of radio units (RU):
A technology that connects to the radio unit (RU) instead of the base unit (CU/DU) and enables verifying the normality of the RU separately.
(*7)Test scenario extraction tool
A tool that automatically extracts optimal test scenarios for each 5G network using different profiles from different carriers as input.
(*8)Test parameter modification tool
A tool for automatic extraction and modification of various test parameters for more efficient testing.
(*9)Test result assessment tool
A tool that automatically determines the acceptability of test results.

About Fujitsu

Fujitsu’s purpose (fujitsu.com) is to make the world more sustainable by building trust in society through innovation. As the digital transformation partner of choice for customers in over 100 countries, our 124,000 employees work to resolve some of the greatest challenges facing humanity. Our range of services and solutions draw on five key technologies: Computing, Networks, AI, Data & Security, and Converging Technologies, which we bring together to deliver sustainability transformation. Fujitsu Limited (TSE:6702) reported consolidated revenues of 3.7 trillion yen (US$28 billion) for the fiscal year ended March 31, 2023 and remains the top digital services company in Japan by market share.

About NEC Corporation

NEC Corporation (nec.com) has established itself as a leader in the integration of IT and network technologies while promoting the brand statement of “Orchestrating a brighter world.” NEC enables businesses and communities to adapt to rapid changes taking place in both society and the market as it provides for the social values of safety, security, fairness and efficiency to promote a more sustainable world where everyone has the chance to reach their full potential.

4. Contact information
For inquiries regarding this news release, please contact:

NEC Telecom Services Planning Department
E: contact[.]nwsbu.jp.nec.com.
Fujitsu Contact Line (General Information Desk) T: 0120-933-200
Business hours: 9:00-12:00 and 13:00-17:30 (except Saturdays, Sundays, national holidays, and Company-designated holidays)

Fujitsu
Public and Investor Relations Division
Inquiries
Company: Fujitsu Limited

NEC is a registered trademark of NEC Corporation. All Rights Reserved. Other product or service marks mentioned herein are the trademarks of their respective owners. ©2023 NEC Corporation.

 
 
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Fujitsu and NEC Significantly Improve Efficiency of Base Station Interoperability Testing for the Post-5G Era

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