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Paper Abstract and Keywords
Presentation 2017-09-08 15:50
Coded Caching for Hierarchical Networks with Different Number of Layers (II)
Makoto Takita (Kobe Univ.), Masanori Hirotomo (Saga Univ.), Masakatu Morii (Kobe Univ.) IT2017-49
Abstract (in Japanese) (See Japanese page) 
(in English) Coded caching is a technique to reduce network loads.
Recent works have discussed single-layer caching systems, but many networks consist of multiple layers of caches.
In this paper, we discuss coded caching problem for a hierarchical network that has a different number of layers.
The networks have users who connect to an origin server via mirror servers and users who directly connect to the origin server.
In our previous work, we have provided three basic schemes for this network setting and characterize these schemes.
In this paper, we provide lower bounds for our network setting and propose a novel scheme by combining these two basic schemes.
In addition, we provide achievable rates and show that proposed combination scheme demonstrates good performance by a numerical result.
Keyword (in Japanese) (See Japanese page) 
(in English) coded caching / caching scheme / hierarchical network / / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 208, IT2017-49, pp. 61-66, Sept. 2017.
Paper # IT2017-49 
Date of Issue 2017-09-01 (IT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee IT  
Conference Date 2017-09-08 - 2017-09-08 
Place (in Japanese) (See Japanese page) 
Place (in English) Centcore Yamaguchi Hotel 
Topics (in Japanese) (See Japanese page) 
Topics (in English) error correcting codes, general 
Paper Information
Registration To IT 
Conference Code 2017-09-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Coded Caching for Hierarchical Networks with Different Number of Layers (II) 
Sub Title (in English)  
Keyword(1) coded caching  
Keyword(2) caching scheme  
Keyword(3) hierarchical network  
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1st Author's Name Makoto Takita  
1st Author's Affiliation Kobe University (Kobe Univ.)
2nd Author's Name Masanori Hirotomo  
2nd Author's Affiliation Saga University (Saga Univ.)
3rd Author's Name Masakatu Morii  
3rd Author's Affiliation Kobe University (Kobe Univ.)
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Speaker Author-1 
Date Time 2017-09-08 15:50:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2017-49 
Volume (vol) vol.117 
Number (no) no.208 
Page pp.61-66 
#Pages
Date of Issue 2017-09-01 (IT) 


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