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Paper Abstract and Keywords
Presentation 2014-03-03 14:50
Cell Selection in a Dynamic Femtocell Environment: Restless Multi-Armed Bandit Formulation
Chaima Dhahri, Tomoaki Ohtsuki (Keio Univ.) RCS2013-327
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we model the problem of cell selection in open-access femtocell networks as a decentralized restless multi-armed bandit (RMAB) with unknown dynamics and multiple players. This is a classic exploration/exploitation problem where each user is trying to learn the best channel to maximize its capacity and reduce its frequency of handover. Each channel is modeled as finite state Markov chain with a Markovian reward. To solve this problem, we refer to the decentralized Restless Upper Confidence Bound (RUCB) algorithm that achieves a logarithmic regret over time for MAB problem. Also, we extend this algorithm to handle dynamic environment by applying a change point detection test based on Page-Hinkley test (PHT). Simulation results show that
? our two proposals come very close to the performance of opportunistic method in terms of capacity, while fewer average number of handovers are required.
? the use of a change point test allows better performance in terms of capacity particularly in a dynamic environment.
Keyword (in Japanese) (See Japanese page) 
(in English) cell selection / femtocell / multi-armed bandit / dynamic environment / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 456, RCS2013-327, pp. 127-131, March 2014.
Paper # RCS2013-327 
Date of Issue 2014-02-24 (RCS) 
ISSN Print edition: ISSN 0913-5685    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 RCS2013-327

Conference Information
Committee RCS SR SRW  
Conference Date 2014-03-03 - 2014-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2014-03-RCS-SR-SRW 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Cell Selection in a Dynamic Femtocell Environment: Restless Multi-Armed Bandit Formulation 
Sub Title (in English)  
Keyword(1) cell selection  
Keyword(2) femtocell  
Keyword(3) multi-armed bandit  
Keyword(4) dynamic environment  
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1st Author's Name Chaima Dhahri  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tomoaki Ohtsuki  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2014-03-03 14:50:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2013-327 
Volume (vol) vol.113 
Number (no) no.456 
Page pp.127-131 
#Pages 5 
Date of Issue 2014-02-24 (RCS) 

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