Paper Abstract and Keywords |
Presentation |
2016-05-16 14:30
[Poster Presentation]
An Experimental Study on Network-Listening Based Synchronization with Loop-Back Self-Interference Canceller Sho Nabatame, Mitsukuni Konishi, Atsushi Nagate, Teruya Fujii (SoftBank) SR2016-4 SRW2016-4 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The overlaid cell structure, in which a large number of small cells are deployed in a macro-cell coverage area, is considered to be a promising approach in order to accommodate rapidly increasing mobile data traffic. In the overlaid cell structure, eICIC (enhanced Inter-Cell Interference Coordination) is an essential technique to avoid the interference between the macro cells and the small cells when co-channel deployment is used. Because eICIC conducts interference coordination in the time domain, accurate timing synchronization is required between the macro cells and the small cells. We have proposed a network-listening based synchronization method, which enables accurate synchronization even indoors without receiving GPS signal. In the proposed method, a small-cell eNB receives a macro-cell downlink synchronization signal and establishes synchronization with the macro-cell eNB. However, we need to update synchronization periodically and receive a macro-cell signal even while there is a loop-back interference signal from the small-cell eNB itself. In order to solve the problem, we have proposed a method to mute the transmission and avoid loop-back self-interference. Although this works well, it is an issue that the spectral efficiency is deteriorated by the signal stopping. In this paper, we propose a synchronization method that cancels loop-back self-interference without stopping the transmission of small-cell eNB and clarify the effect of the proposed method by computer simulations and laboratory experiments using the first-ever prototype system. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
LTE-Advanced / Layered cell configuration / HetNet / Small cell / Timings synchronization / Network listening / Radio-interface based synchronization / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 29, SR2016-4, pp. 9-14, May 2016. |
Paper # |
SR2016-4 |
Date of Issue |
2016-05-09 (SR, SRW) |
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) |
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SR2016-4 SRW2016-4 |
Conference Information |
Committee |
SR SRW |
Conference Date |
2016-05-16 - 2016-05-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hotel Lasaretti, Oulu, Finland |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
SmartCom2016 |
Paper Information |
Registration To |
SR |
Conference Code |
2016-05-SR-SRW |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
An Experimental Study on Network-Listening Based Synchronization with Loop-Back Self-Interference Canceller |
Sub Title (in English) |
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Keyword(1) |
LTE-Advanced |
Keyword(2) |
Layered cell configuration |
Keyword(3) |
HetNet |
Keyword(4) |
Small cell |
Keyword(5) |
Timings synchronization |
Keyword(6) |
Network listening |
Keyword(7) |
Radio-interface based synchronization |
Keyword(8) |
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1st Author's Name |
Sho Nabatame |
1st Author's Affiliation |
SoftBank Corp (SoftBank) |
2nd Author's Name |
Mitsukuni Konishi |
2nd Author's Affiliation |
SoftBank Corp (SoftBank) |
3rd Author's Name |
Atsushi Nagate |
3rd Author's Affiliation |
SoftBank Corp (SoftBank) |
4th Author's Name |
Teruya Fujii |
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SoftBank Corp (SoftBank) |
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Speaker |
Author-1 |
Date Time |
2016-05-16 14:30:00 |
Presentation Time |
100 minutes |
Registration for |
SR |
Paper # |
SR2016-4, SRW2016-4 |
Volume (vol) |
vol.116 |
Number (no) |
no.29(SR), no.30(SRW) |
Page |
pp.9-14 |
#Pages |
6 |
Date of Issue |
2016-05-09 (SR, SRW) |
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