Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2026-03-05 09:45
Fundamental evaluation of power saving for base station by controlling bandwidth from the RAN controller
Riichiro Nagareda (KDDI Research/NICT), Renri Nakano (NICT), Chikara Sasaki (KDDI Research), Yuuichi Teranishi, Hidehisa Nagano (NICT) NS2025-291
Abstract (in Japanese) (See Japanese page) 
(in English) In the forthcoming 6G era, the proliferation of new use cases like eXtended Reality (XR) and large-scale digital twins poses a critical challenge of increased power consumption within the Radio Access Network (RAN). This rise is driven by wider bandwidths, advanced Massive MIMO systems, the use of millimeter-wave and sub-terahertz bands, and high-density base station deployments. Deployed in large numbers, Radio Units (RUs) are particularly significant contributors, accounting for a substantial portion of the RAN’s total power consumption. The O-RAN ALLIANCE, which promotes RAN virtualization and openness, is exploring use cases for RAN control, including flexible radio control from a RAN Intelligent Controller (RIC) to enhance power efficiency. This paper proposes a dynamic transmission bandwidth control method that leverages the RIC to reduce RU power consumption under low-traffic conditions. A preliminary evaluation, which narrowed the RU’s transmission bandwidth in response to the downlink traffic load, confirms that a power saving of approximately 1 W can be achieved through this method.
Keyword (in Japanese) (See Japanese page) 
(in English) RAN Energy Saving / O-RAN / RIC / Dynamic bandwidth control / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 385, NS2025-291, pp. 416-421, March 2026.
Paper # NS2025-291 
Date of Issue 2026-02-25 (NS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF NS2025-291

Conference Information
Committee IN NS  
Conference Date 2026-03-04 - 2026-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-Ken Shichoson Jichi Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To NS 
Conference Code 2026-03-IN-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Fundamental evaluation of power saving for base station by controlling bandwidth from the RAN controller 
Sub Title (in English)  
Keyword(1) RAN Energy Saving  
Keyword(2) O-RAN  
Keyword(3) RIC  
Keyword(4) Dynamic bandwidth control  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Riichiro Nagareda  
1st Author's Affiliation KDDI Research Inc./National Institute of Information and Communications Technology (KDDI Research/NICT)
2nd Author's Name Renri Nakano  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Chikara Sasaki  
3rd Author's Affiliation KDDI Research Inc. (KDDI Research)
4th Author's Name Yuuichi Teranishi  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Hidehisa Nagano  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2026-03-05 09:45:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-291 
Volume (vol) vol.125 
Number (no) no.385 
Page pp.416-421 
#Pages 6 
Date of Issue 2026-02-25 (NS) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan