Monitoring of Large-Area IoT Sensors Using a LoRa Wireless Mesh Network System: Design and Evaluation
Citations
63 citations
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Cites background or methods from "Monitoring of Large-Area IoT Sensor..."
...However, many of the recent multihop proposals do not deal with energy issues, like the ones presented in [18,23,24]....
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...The work in [23] proposed a routing protocol over a LoRa physical layer based on a child-list to create routes....
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...[29] Router-Device Single Yes Yes Lee and Ke [23] Router-Device Single No Yes Liao et al....
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...[29] LoRa x general Huh and Kim [55] LoRaWAN x urban/industrial Kim and Jang [56] LoRaWAN x general Lee and Ke [23] LoRa x University Campus Liao et al....
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59 citations
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References
2,297 citations
"Monitoring of Large-Area IoT Sensor..." refers methods in this paper
...The PDR could fall even further if nodes are allowed to send data actively (such as in the ALOHA protocol in LoRaWAN approach)....
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...If nodes are allowed to send data actively, without waiting for a data request from the GW, as in the ALOHA LoRaWAN approach, packet collision may decrease PDR in the event that many nodes send data simultaneously....
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...The design and drawbacks of LoRaWAN are similar to those of the ALOHA [17] protocol, as there is no mechanism to arbitrate access to a shared wireless frequency....
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1,126 citations
"Monitoring of Large-Area IoT Sensor..." refers methods or result in this paper
...The time-related performance of LoRa and LoRaWAN was also evaluated [16] to determine the uncertainty of schedule to transmission and long-term clock stability....
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...In a study of how SF affects receiver sensitivity in LoRa and LoRaWAN [13], researchers used a Semtech SX1276 Mbed shield as the end device and a Cisco 910 industrial router as the GW....
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...This result indicates that the one-hop LoRa network does not perform well for indoor nodes, which again confirmed the analysis of [11]–[13]....
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...In a study of how SF affects receiver sensitivity in LoRa and LoRaWAN [13], researchers used a Semtech SX1276 Mbed...
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...We can compare this drawback to singlehop LoRaWAN systems, which suffer from low PDR with a high density of LoRa devices, as mentioned in [13]....
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842 citations
"Monitoring of Large-Area IoT Sensor..." refers background in this paper
...Increasing the spreading factor (SF) of LoRa PHY to 12 can significantly extend the communication range by increasing the receiver sensitivity [9], but the drawback is that doing so can lower the data throughput rate and cause more severe data collision due to the longer times required for transmission....
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748 citations
593 citations
"Monitoring of Large-Area IoT Sensor..." refers background in this paper
...To test long-range outdoor transmission, Petäjäjärvi and colleagues [14] installed a LoRa node on the roof rack of a car and another on the radio mast of a boat....
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