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| Presentation | 2021-03-04 09:50 Transmission Timing Control Using ACK Signal in LoRaWAN with Multiple Frequency Channels Muying Chen, Koichi Adachi (UEC), Osamu Takyu (SU), Mai Ohta (FU), Takeo Fujii (UEC)  RCS2020-223 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Long range wide area network (LoRaWAN) enables low-power and long-range communication suitable for wireless sensor networks (WSNs). Since LoRaWAN is a decentralized network, packet collision may occur if multiple nodes send data packets simultaneously. It is necessary to adjust the node's transmission interval properly to avoid such packet collisions. This paper proposes a transmission interval control strategy that takes advantage of an acknowledgment (ACK) signal from a fusion center (FC) to each node. Instead of transmitting a controlling signal, the FC selects one of two receiving windows for ACK packet transmission to indicate 0 or 1. Thus, it does not incur any overhead. The proposed method adaptively changes the transmission interval of each LoRaWAN node by utilizing the ACK signal returned from the FC. % The proposed method uses a simple prediction method that is computationally simple and can provide good properties even when there are constraints on the systems associated with observing gentle changes, such as environmental monitoring. Computer simulation results show that the proposed method can reduce the number of transmitted packets while achieving the same observation accuracy level as conventional methods. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | LPWA / LoRaWAN / WSNs / PDR / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 404, RCS2020-223, pp. 100-105, March 2021. | |
| Paper # | RCS2020-223 | |
| Date of Issue | 2021-02-24 (RCS) | |
| 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 | RCS2020-223 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2021-03-03 - 2021-03-05 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transmission Timing Control Using ACK Signal in LoRaWAN with Multiple Frequency Channels |
| Sub Title (in English) | |
| Keyword(1) | LPWA |
| Keyword(2) | LoRaWAN |
| Keyword(3) | WSNs |
| Keyword(4) | PDR |
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| 1st Author's Name | Muying Chen |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Koichi Adachi |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
| 3rd Author's Name | Osamu Takyu |
| 3rd Author's Affiliation | Shinshu University (SU) |
| 4th Author's Name | Mai Ohta |
| 4th Author's Affiliation | Fukuoka University (FU) |
| 5th Author's Name | Takeo Fujii |
| 5th Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2021-03-04 09:50:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2020-223 |
| Volume (vol) | vol.120 |
| Number (no) | no.404 |
| Page | pp.100-105 |
| #Pages | 6 |
| Date of Issue | 2021-02-24 (RCS) |
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