exploring_lora
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exploring_lora [2018/09/29 13:02] – samer | exploring_lora [2018/09/29 15:33] – samer | ||
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In the following, you will design and implement a set of scenarios that enable to evaluate the performance of the LoRa modulation. As you will deal with scientific assessment, you are required to use scientific tools to show the results. You have the choice between [[http:// | In the following, you will design and implement a set of scenarios that enable to evaluate the performance of the LoRa modulation. As you will deal with scientific assessment, you are required to use scientific tools to show the results. You have the choice between [[http:// | ||
+ | As we are in presence of variable radio conditions, some experiments should be repeated multiple times and results can be shown as probability distributions. Take a look at this excellent repository of data visualisation tools [[https:// | ||
==== -. Time on Air ==== | ==== -. Time on Air ==== | ||
- | In this section, you will measure the Time on Air (ToA) under the three different radio configurations and for different message sizes. The ToA is the time necessary to send a message on the radio interface. | + | In this section, you will measure the Time on Air (ToA) as given by the time necessary to transmit |
- | For this, you can start by implementing a function on the client that measures the time necessary for sending a message. For example, you can use the [[https:// | + | For this, you will start by implementing a function on the client that measures the time necessary for sending a message. For example, you can use the [[https:// |
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
- | * Join commented extracts of your code and explain your approach for computing the ToA. | + | |
- | * Draw a box plot of the ToA under the three different radio configurations and for three different | + | |
- | * Analyze the obtained results and compare with the theoretical computations. You can superpose the theoretical results and the practical | + | * Visualise the experimental results by plotting the ToA as a function of each one of the different |
+ | * Analyze the obtained results and compare with the theoretical computations. You can superpose the theoretical results and the experimental | ||
</ | </ | ||
- | ==== -. Packet Delivery Ratio ==== | ||
- | In this section, you will measure the Packet | + | ==== -. [Classroom activity] Collisions and Packet |
- | Only for this test, all groups are required to use the same frequency | + | In this section, you will measure the Packet Delivery Ratio (PDR) under different transmission periods. |
+ | |||
+ | You will start by implementing a function on the server that measures the ratio of successfully delivered packets. | ||
+ | |||
<WRAP center round help 100%> | <WRAP center round help 100%> | ||
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==== -. Coverage ==== | ==== -. Coverage ==== | ||
- | + | In this section, you will measure the coverage of LoRa devices under the three different radio configurations. For this, you will start by identifying a set of Test Points (TP). Then, you should implement a function that sends packets with different radio configurations. Note that the following functions in the Arduino sketch enable to modify //on the fly// the LoRa parameters: | |
- | In this section, you will measure the coverage of LoRa devices under the three different radio configurations. For this, you can start by identifying a set of Test Points (TP) on the campus. Then, you should implement a function that sends packets with different radio configurations. Note that the following functions in the Arduino sketch enable to modify //on the fly// the LoRa parameters: | + | |
<code c++> | <code c++> | ||
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* Give a statistical measure of the PER and the RSSI for each TP with each of the different radio configurations. | * Give a statistical measure of the PER and the RSSI for each TP with each of the different radio configurations. | ||
</ | </ | ||
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==== -. Path Loss ==== | ==== -. Path Loss ==== | ||
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer