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| Paper Abstract and Keywords | ||
| Presentation | 2022-03-11 10:40 Dynamic Scheduling Method Using Transmission Delay Manipulation via ACK for LoRa Wireless Network Riki Bando, Akihiro Nakao (UTokyo)  NS2021-150 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | LoRa, one type of LPWA, uses ALOHA for the MAC layer protocol, which causes an increase in packet collisions due to overlapping of intermittent communication as the number of sensors increases. We have proposed a method of dynamically smoothing the traffic to shift transmission timing of each sensor by controlling the transmission delay via ACK responses, but this method has been evaluated only by simulation. In this paper, we evaluate the effectiveness of the proposed method with actual devices. The evaluation experiments show that the proposed method can improve the packet delivery rate by up to 92 % when each sensor is activated simultaneously, and by up to 35 % when each sensor is activated randomly, and can increase the number of devices in the bandwidth. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | IoT / LPWA / LoRa / Periodic Traffic / ALOHA / Transmission Delay Manipulation / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 433, NS2021-150, pp. 164-170, March 2022. | |
| Paper # | NS2021-150 | |
| Date of Issue | 2022-03-03 (NS) | |
| 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 | NS2021-150 |
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| Conference Information | |
| Committee | NS IN |
| Conference Date | 2022-03-10 - 2022-03-11 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | NS |
| Conference Code | 2022-03-NS-IN |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Dynamic Scheduling Method Using Transmission Delay Manipulation via ACK for LoRa Wireless Network |
| Sub Title (in English) | |
| Keyword(1) | IoT |
| Keyword(2) | LPWA |
| Keyword(3) | LoRa |
| Keyword(4) | Periodic Traffic |
| Keyword(5) | ALOHA |
| Keyword(6) | Transmission Delay Manipulation |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Riki Bando |
| 1st Author's Affiliation | The University of Tokyo (UTokyo) |
| 2nd Author's Name | Akihiro Nakao |
| 2nd Author's Affiliation | The University of Tokyo (UTokyo) |
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| Speaker | Author-1 |
| Date Time | 2022-03-11 10:40:00 |
| Presentation Time | 20 minutes |
| Registration for | NS |
| Paper # | NS2021-150 |
| Volume (vol) | vol.121 |
| Number (no) | no.433 |
| Page | pp.164-170 |
| #Pages | 7 |
| Date of Issue | 2022-03-03 (NS) |
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