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| Presentation | 2019-05-30 16:45 Spectrum Sharing exploiting Spectrum Database for LPWA Yudai Yamazaki, Takeo Fujii (UEC), Osamu Takyu (Shinshu Univ.), Mai Ohta (Fukuoka Univ.), Koichi Adachi (UEC)  SR2019-10 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the most of current low power wide area (LPWA), packet collisions of uplink communication are controlled by setting duty cycle (DC), which controls the transmission cycle not to exceed the predefined fixed threshold. However, as the number of LPWA nodes increases, the fixed DC fatally increases the number of packet collisions and degrades the communication quality. Therefore, in this paper, we propose an adaptive DC decision algorithm. The proposed algorithm aims at adapting the period that the system interferes with others and reducing the packet loss rate of uplink communication of the whole system to below the required value by adapting DC with the help of measurement-based spectrum database (MSD). In the proposed method, MSD knows the number of LoRa nodes that interfere with the nodes of other systems. The DC is calculated for keeping the period of interference to less than a certain duration. In addition, the DC is also adapted based on the required packet loss rate to improve communication efficiency. Computer simulation results show that the allowable interference time ratio and the required packet loss rate can be accurately guaranteed compared to the conventional method with the fixed DC even if the number of nodes increases. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spectrum Database / LPWA / Spectrum Sharing / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 62, SR2019-10, pp. 63-68, May 2019. | |
| Paper # | SR2019-10 | |
| Date of Issue | 2019-05-23 (SR) | |
| 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 | SR2019-10 |
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| Conference Information | |
| Committee | SR |
| Conference Date | 2019-05-30 - 2019-05-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Big Sight |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Technical Exhibition, LPWA, General |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2019-05-SR |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Spectrum Sharing exploiting Spectrum Database for LPWA |
| Sub Title (in English) | |
| Keyword(1) | Spectrum Database |
| Keyword(2) | LPWA |
| Keyword(3) | Spectrum Sharing |
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| 1st Author's Name | Yudai Yamazaki |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Takeo Fujii |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
| 3rd Author's Name | Osamu Takyu |
| 3rd Author's Affiliation | Shinshu University (Shinshu Univ.) |
| 4th Author's Name | Mai Ohta |
| 4th Author's Affiliation | Fukuoka University (Fukuoka Univ.) |
| 5th Author's Name | Koichi Adachi |
| 5th Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2019-05-30 16:45:00 |
| Presentation Time | 25 minutes |
| Registration for | SR |
| Paper # | SR2019-10 |
| Volume (vol) | vol.119 |
| Number (no) | no.62 |
| Page | pp.63-68 |
| #Pages | 6 |
| Date of Issue | 2019-05-23 (SR) |
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