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| Presentation | 2015-03-05 11:40 A Study on Licensed-Assisted Access using LTE in Unlicensed Band Naoki Kusashima, Alvaro Ruiz Delgado, Kazuyuki Shimezawa, Kazunari Yokomakura, Kimihiko Imamura (Sharp)  RCS2014-343 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In order to cope with explosively increasing traffic, license-assisted access (LAA) is being studied in the third generation partnership project (3GPP) release 13. In LAA operation, an important scope is that long term evolution (LTE) is operated in unlicensed bands such as 5 GHz with assistance from LTE in license bands. However, in unlicensed band, other wireless system such as wireless local area network (WLAN) has already been deployed. Therefore, one of the most important issues is that LAA system can co-exist with WLAN system so that LAA does not degrades WLAN performances in LAA-WLAN coexistence case in comparison to WLAN-WLAN coexistence case. In the WLAN which can be operated in unlicensed band, a carrier sense multiple access with collision avoidance (CSMA/CA) is employed as a listen-before talk (LBT) to fairly co-exist with other WLAN nodes and satisfy regulations for companies. In that sense, LAA evolved node B (eNB) or user equipment (UE) should apply a LBE. Therefore, in this paper, we study two kind of LBT accommodated to a design of LTE physical layer using system level simulation assuming only donwlink (DL) transmission is operated in the unlicensed band. Computer simulation confirms no impact of LAA on WLAN and significant improvement of LAA performance compared with WLAN performance. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LTE-Advanced / Release 13 / Licensed-Assisted Access / Listen Before Talk / Wireless LAN / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 490, RCS2014-343, pp. 249-254, March 2015. | |
| Paper # | RCS2014-343 | |
| Date of Issue | 2015-02-25 (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 | RCS2014-343 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2015-03-04 - 2015-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2015-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Licensed-Assisted Access using LTE in Unlicensed Band |
| Sub Title (in English) | |
| Keyword(1) | LTE-Advanced |
| Keyword(2) | Release 13 |
| Keyword(3) | Licensed-Assisted Access |
| Keyword(4) | Listen Before Talk |
| Keyword(5) | Wireless LAN |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Naoki Kusashima |
| 1st Author's Affiliation | Sharp Corporation (Sharp) |
| 2nd Author's Name | Alvaro Ruiz Delgado |
| 2nd Author's Affiliation | Sharp Corporation (Sharp) |
| 3rd Author's Name | Kazuyuki Shimezawa |
| 3rd Author's Affiliation | Sharp Corporation (Sharp) |
| 4th Author's Name | Kazunari Yokomakura |
| 4th Author's Affiliation | Sharp Corporation (Sharp) |
| 5th Author's Name | Kimihiko Imamura |
| 5th Author's Affiliation | Sharp Corporation (Sharp) |
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| Speaker | Author-1 |
| Date Time | 2015-03-05 11:40:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2014-343 |
| Volume (vol) | vol.114 |
| Number (no) | no.490 |
| Page | pp.249-254 |
| #Pages | 6 |
| Date of Issue | 2015-02-25 (RCS) |
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