DOCOMO, Fujitsu and NEC Achieve World's First Carrier Aggregation Using 5G Frequency Bands on Multi-Vendor Radio Access Network
Will allow 4.2Gbps downlink speed for high-speed data communications
TOKYO, Sep 30, 2020 - (JCN Newswire) - NTT DOCOMO, INC., Fujitsu Limited and NEC Corporation announced today that they have achieved what they believe to be the world's first carrier aggregation using 5G frequency bands in a multi-vendor radio access network (RAN). Interoperability with different vendors' 5G base station equipment was achieved in compliance with specifications established by the Open Radio Access Network (O-RAN) Alliance, an international group working to create more open and intelligent next-generation radio access networks.
 | Carrier aggregation using 5G-frequency bands on multi-vendor RAN | |
Carrier aggregation was achieved using the 3.7GHz and 4.5GHz bands designated for 5G networks. In addition to this dual connectivity achieved by bundling LTE bands, downlink speeds of 4.2 Gbps will be achievable, enabling ultra-fast data transmission.
DOCOMO already provides commercial 5G services in Japan through a multi-vendor RAN that connects baseband units and remote radio units manufactured by Fujitsu and NEC based on O-RAN?s open fronthaul specifications. The same system configuration was used to achieve this 5G carrier aggregation.
Naoki Tani, Senior Vice President at DOCOMO, said: "The deployment of O-RAN-compliant products will enable DOCOMO to flexibly build networks and provide 5G services that meet customer needs. Carrier aggregation furthering 5G high-speed data communication in a multi-vendor RAN developed jointly with Fujitsu and NEC is an important achievement. DOCOMO will continue to work with industry partners to promote open RAN and 5G services."
Shingo Mizuno, EVP and Vice Head of System Platform Business at Fujitsu, commented: "We are delighted to have succeeded in achieving carrier aggregation for 5G high-speed data communication in an environment featuring interconnection of multi-vendor equipment compliant with O-RAN specifications. This key milestone in the evolution of O-RAN will contribute greatly to the delivery of convenient 5G services and RAN openness, which Fujitsu is actively supporting with the aim of enhancing 5G services."
Atsuo Kawamura, Executive Vice President at NEC and President of the company's Network Services Business Unit, said: "The success of carrier aggregation in the 5G bands is a critical step in the ongoing enhancement of 5G network performance. I am very pleased that in collaboration with DOCOMO and Fujitsu we have now achieved high-performance O-RAN multi-vendor connectivity. This will lay the foundation for more open 5G services and business."
The results of the interoperability verification were presented between September 25 and 30, during the O-RAN Plugfest web conferences organized by the O-RAN Alliance. Plugfest was held concurrently in Japan, China, India, Europe, and North America, facilitating proofs of concept and interoperability tests of O-RAN products and solutions.
Going forward, DOCOMO, Fujitsu, and NEC will continue working toward the early introduction of commercial 5G carrier aggregation services.
About NTT DOCOMO
NTT DOCOMO, Japan's leading mobile operator with over 79 million subscriptions, is one of the world's foremost contributors to 3G, 4G and 5G mobile network technologies. Beyond core communications services, DOCOMO is challenging new frontiers in collaboration with a growing number of entities ("+d" partners), creating exciting and convenient value-added services that change the way people live and work. Under a medium-term plan toward 2020 and beyond, DOCOMO is pioneering a leading-edge 5G network to facilitate innovative services that will amaze and inspire customers beyond their expectations. DOCOMO is listed on the Tokyo Stock Exchange (9437). www.nttdocomo.co.jp/english.
About Fujitsu
Fujitsu is the leading Japanese information and communication technology (ICT) company offering a full range of technology products, solutions and services. Approximately 130,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE:6702) reported consolidated revenues of 3.9 trillion yen (US$35 billion) for the fiscal year ended March 31, 2020. For more information, please see www.fujitsu.com.
About NEC Corporation
NEC Corporation 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. For more information, visit NEC at https://www.nec.com.
Source: NEC Corporation Sectors: Telecoms, 5G, Wireless, Apps
Copyright ©2025 JCN Newswire. All rights reserved. A division of Japan Corporate News Network.
|
Related Press Release
NEC Security to Provide Cybersecurity Services for GREENxEXPO 2027 (International Horticultural Expo 2027,Yokohama, Japan) | October 03 2025 22:01 JST | | Ouribank Signs Agreement with NEC to Implement AI-Native Data Center and Campus Network from HPE Juniper Networking for Enhanced Operational Efficiency | September 30 2025 18:52 JST | | NEC Releases Third Edition of TNFD Report | September 29 2025 15:24 JST | | NEC Launches 25Gb/s SFP28 Bi-directional Optical Transceiver Capable of 80km Transmission | September 26 2025 20:20 JST | | Meta, SoftBank Corp., IPS, TM, XLSmart, and NEC to build the Candle Submarine Cable System, Intra Asia, 24-Fiber Pair Optical Submarine Cable, Connecting Japan to Singapore | September 24 2025 13:43 JST | | MOTER Technologies and NEC Form Strategic Capital Alliance to Advance the Future of Mobility Through Digital Innovation | September 19 2025 18:00 JST | | NEC Publishes ESG Initiatives Supporting Sustainable Growth of Companies and Society in "ESG Databook 2025" | September 16 2025 13:00 JST | | The University of Osaka D3 Center Commences Operation of New Computing and Data Infrastructure Built by NEC | September 12 2025 14:08 JST | | NEC participates in Locked Shields 2025 hosted by the NATO Cooperative Cyber Defence Centre of Excellence | September 05 2025 10:20 JST | | NEC to begin proof of concept for early earthquake detection and analysis in Colombia | September 04 2025 10:15 JST | | More Press release >> |
Latest Press Release
 MHI Thermal Systems Air-Conditioners for the Australian Market Recognized with Prestigious Awards Oct 17, 2025 23:37 JST
|  SEKISUI CHEMICAL, Fujitsu, and SAP Japan announce comprehensive modernization of management platform to drive data-driven approach Oct 17, 2025 23:00 JST
|  TransNusa to Launch Bali - Singapore Scheduled Flight on November 17 Oct 17, 2025 16:58 JST
|  MHIEC Receives Contract for Improvement of Core Equipment at Municipal Solid Waste Incineration Facility in Kanazawa Oct 16, 2025 23:57 JST
|  Overview of Honda Exhibits at Japan Mobility Show 2025 Oct 16, 2025 23:20 JST
|  DENSO to Exhibit at JAPAN MOBILITY SHOW 2025 Oct 16, 2025 22:53 JST
|  Fujitsu and IISc launch joint research on advanced AI technologies to accelerate new material development and resolve societal challenges Oct 16, 2025 21:55 JST
|  Mitsubishi Motors Wins Triple Honors at Good Design Award 2025 in Japan with the Delica Mini, Destinator and Delica Series Oct 15, 2025 21:29 JST
|  Mitsubishi Motors at Japan Mobility Show 2025: World Premiere of Electrified Crossover SUV Concept Oct 15, 2025 20:35 JST
|  Honda to Present World Premiere of ProZision(TM) Autonomous, at Equip Exposition 2025, Honda Battery-powered Autonomous Riding Lawn Mower Oct 15, 2025 19:56 JST
|  Honda to Make Additional Investment in U.S.-based Helm.ai to Further Enhance Development of Next-generation AD/ADAS Oct 15, 2025 19:25 JST
|  MHI Thermal Systems Wins 2025 GOOD DESIGN AWARD for Hyper Multi LXZ Series of Building-Use Multi-Split Air-Conditioners in Japan Oct 15, 2025 18:50 JST
|  Mitsubishi Power Marks 60 Years in Saudi Arabia with Unveiling of First Locally Assembled JAC Gas Turbine at Dammam Assembly Facility Oct 14, 2025 18:21 JST
|  LEQEMBI(R) IQLIK(TM) (lecanemab-irmb) Subcutaneous Autoinjector Named to TIME's "Best Inventions of 2025" Oct 14, 2025 17:54 JST
|  Mazda Announces Exhibition at JAPAN MOBILITY SHOW 2025 Oct 14, 2025 17:38 JST
|  Hitachi Advances Strategic Alliance with Google Cloud to Empower Frontline Workers with Field-Specific AI Agents Oct 11, 2025 00:58 JST
|  Honda Issues Integrated Report - "Honda Report 2025" Oct 11, 2025 00:46 JST
|  DENSO's Electrification Products Adopted for TOYOTA's New "bZ4X" Oct 11, 2025 00:21 JST
|  Newly developed eAxle adopted for TOYOTA's new "bZ4X" Oct 11, 2025 00:08 JST
|  MHIET and MHI-TC Complete Delivery of First "COORDY" Controller Providing Optimized Control of Multiple Power Sources Oct 10, 2025 23:47 JST
|
More Latest Release >>
|