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Paper Abstract and Keywords
Presentation 2026-03-06 11:10
Dynamic Computation Resource Allocation and Slice-Switching Control for High-Efficiency Network Slicing in O-RAN
Lewiss Quarm, Takanori Hara, Shoji Kasahara (NAIST) NS2025-316
Abstract (in Japanese) (See Japanese page) 
(in English) Open Radio Access Network (O-RAN) architectures have enabled the virtualization of base station functions and flexible control on general-purpose servers, raising a pressing issue of reducing the power consumption of increasingly complex network resources.
In particular, in a network-slicing environment, deactivating slices or shutting down computational resources to save power consumption involves a trade-off, as it can make it difficult to meet throughput requirements specified in Service Level Agreements (SLAs).
In this paper, we propose a dynamic computation resource allocation method that maximizes energy efficiency (EE), defined as the ratio of throughput to power consumption.
To achieve this, we formulate a mixed integer non-linear programming (MINLP) problem in which the decision variables are the number of CPU units allocated to each slice and the slice activation status.
By applying linearization and constraint relaxation, we transform the MINLP into a fractional programming problem and further reformulate it as a mixed integer linear programming (MILP) problem using Dinkelbach's method.
We also propose an approximate solution method that iteratively searches for solutions to the reformulated MILP.
Simulation results show that the proposed method adaptively controls resources in response to demand fluctuations, achieving both the maintenance of throughput requirements and the reduction of power consumption.
Keyword (in Japanese) (See Japanese page) 
(in English) Network slicing / Network slice mobility / Open Radio Access Network / Energy efficiency / / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 385, NS2025-316, pp. 557-562, March 2026.
Paper # NS2025-316 
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 NS2025-316

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) Dynamic Computation Resource Allocation and Slice-Switching Control for High-Efficiency Network Slicing in O-RAN 
Sub Title (in English)  
Keyword(1) Network slicing  
Keyword(2) Network slice mobility  
Keyword(3) Open Radio Access Network  
Keyword(4) Energy efficiency  
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1st Author's Name Lewiss Quarm  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Takanori Hara  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Shoji Kasahara  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2026-03-06 11:10:00 
Presentation Time 25 minutes 
Registration for NS 
Paper # NS2025-316 
Volume (vol) vol.125 
Number (no) no.385 
Page pp.557-562 
#Pages 6 
Date of Issue 2026-02-25 (NS) 

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