TelecomTV TelecomTV
  • News
  • Videos
  • Channels
  • Events
  • Directory
  • Smart Studio
  • Surveys
  • Debates
  • Perspectives
  • DSP Leaders World Forum
  • DSP Summits
  • Great Telco Debate
    • |
    • Follow
    • |
    • Subscribe
  • |
  • More
  • Webcasts
  • Surveys
  • Debates
  • Perspectives
  • Great Telco Debate
  • |
  • Follow TelecomTV
  • |
    • Subscribe
    • |
  • About
  • Privacy
  • Help
  • Contact
  • Follow TelecomTV
  • About
  • Privacy
  • Help
  • Contact
  • Sign In Register Subscribe
    • Subscribe
    • Sign In
    • Register
  • Search

5G

TelecomTV TRACKER

Sourced by TelecomTV's TRACKER platform
from NEC News room

5G

NEC develops massive-element active antenna base station system with C-RAN configuration for 5G communications

Via NEC News room

Oct 30, 2017

Enables stable, high-quality communications

Tokyo, October 30, 2017 - NEC Corporation (NEC; TSE: 6701) today announced it has developed a massive-element active antenna base station system by which a Central Unit (CU) can control multiple Distributed Units (DU) with Centralized-Radio Access Network (C-RAN) configuration, suitable for use with next-generation 5G wireless communication standards.

The system supports the low super high frequency (SHF) (*) band. One CU simultaneously controls multiple subordinate DUs, processes the data sent and received from DUs and controls coordination between DUs. A DU consists of an antenna component, which forms directional signals (beams) to terminals such as smartphones and tablets, and a digital signal processing component, which forms suitable downlink beams from received uplink signals in real time.

Central Unit (CU)

Antenna part of Distributed Unit (DU)

In general, for terminals positioned in a DU's cover area (cell) that are near the boundary of an adjacent DU's cover area, communication quality deteriorates due to radio wave interference. This system forms beams while the CU controls coordination between DUs, avoiding the deterioration of communication quality due to the radio wave interference from both DUs, creating a satisfying communication environment for each user. In addition, by appropriately switching the DU that controls coordination in response to a terminal's location, the system enables stable, high-quality communications for nearly any location.

For communications between the CU and DU, generally known as Mobile Fronthaul (MFH), under a C-RAN configuration, as currently used in 4G (LTE) communications, conditions such as the required transmission capacity are prescribed in the CPRI Standards. However, for 5G communications, because the number of antenna elements and bandwidth size will increase compared to 4G, the MFH transmission capacity will grow. For example, in the case of a DU equipped with a multi-element antenna of 128 antenna elements (64 transmitters and receivers) using 100 MHz bandwidth, a transmission capacity of about 320 Gbps is required according to CPRI standards. This is equivalent to, or greater than, 60 times the amount of an LTE base station (2 antenna elements, 40 MHz bandwidth). It is economically difficult to manage such MFH communications with a currently common optical fiber of 10 Gbps.

By moving functions such as radio control to DUs, which were formerly supported by the CU, MFH transmission capacity was reduced to 10 Gbps, less than one thirtieth of the conventional level. Thanks to the practical MFH transmission capacity, NEC successfully developed a massive-element active antenna base station system with C-RAN configuration.

To achieve 5G in the future, NEC will conduct a demonstration test utilizing this system in cooperation with NTT DOCOMO.

This system includes a part of the results of "The research and development project for realization of the fifth-generation mobile communications system" commissioned by The Ministry of Internal Affairs and Communications, Japan.

"NEC is committed to solutions for society and will actively invest in research and development and demonstration tests to commercialize 5G," said Katsumi Tanoue, Deputy General Manager, Wireless Access Solutions Division, NEC Corporation. "Moving forward, NEC will achieve higher speed, larger capacity and more sophisticated communications services, thereby contributing to the development of more advanced communications infrastructure."


Note:

  • * Super High Frequency: Radio waves with wavelengths from one to ten centimeters that fall within the microwave band with frequencies from 3GHz to 30GHz. Low-SHF refers to radio waves at frequencies of 3GHz to 6GHz.
Related Topics
  • 5G,
  • Announcement,
  • Asia-Pacific,
  • NEC,
  • News,
  • Radio Access Network,
  • Standards,
  • Tracker

More Like This

Digital Platforms & Services

What’s up with… Ericsson & Vodafone, satellite broadband, Huawei

Apr 16, 2021

5G

Huawei: What, me worry?

Apr 16, 2021

5G

China Mobile Hebei and Huawei deploy 5G indoor gigabit networks

Apr 16, 2021

Digital Platforms & Services

What’s up with… Bharti Airtel, SK Telecom, Open Grid Alliance, Cato Networks

Apr 15, 2021

5G

Ericsson and MediaTek dual connectivity breakthrough makes the path to 5G Standalone easier

Apr 15, 2021

This content extract was originally sourced from an external website (NEC News room) and is the copyright of the external website owner. TelecomTV is not responsible for the content of external websites. Legal Notices

Email Newsletters

Stay up to date with the latest industry developments: sign up to receive TelecomTV's top news and videos plus exclusive subscriber-only content direct to your inbox – including our daily news briefing and weekly wrap.

Subscribe

Top Picks

Highlights of our content from across TelecomTV today

DSP Leaders World Forum 2021 Delegate Report

0:50

DSP Leaders Open Telco Summit

23:25

Extra Shot: Next Steps for DSPs

11:17

How cloud dynamics are reshaping the telecoms sector

  • TelecomTV
  • Decisive Media

TelecomTV is produced by the team at Decisive Media

Menu
  • News
  • Videos
  • Channels
  • Directory
  • Smart Studio
 
  • Surveys
  • Debates
  • Perspectives
  • Events
  • About Us
Our Brands
  • TelecomTV Tracker
  • TelecomTV Perspectives
  • DSP Summits
  • DSP Leaders World Forum
  • The Great Telco Debate
Get In Touch
info@telecomtv.com
+44 (0) 207 448 1070

Request a Media Pack

Follow
  • © Decisive Media Limited 2021. All rights reserved. All brands and products are the trademarks of their respective holder(s).
  • Privacy
  • Terms
  • Legal Notices