exploring_lora
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
exploring_lora [2018/09/29 13:14] – [4.1. Time on Air] samer | exploring_lora [2018/09/29 15:35] – [4.3. Coverage] samer | ||
---|---|---|---|
Line 118: | Line 118: | ||
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) as given by the time necessary to transmit a message on the radio interface. You will assess the impact of the spreading factor, | + | In this section, you will measure the Time on Air (ToA) as given by the time necessary to transmit a message on the radio interface. You will assess the impact of the spreading factor, bandwidth, coding rate, and the message size on the ToA. |
- | 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%> | ||
- | * Describe the scenarios you used for assessing the impact of radio parameters on the ToA. You can join commented extracts of your code. | + | * Describe the scenarios you used for assessing the impact of the different |
- | * Visualise the experimental results | + | * Join commented extracts of your code and raw data in attached files. |
- | * Analyze the obtained results and compare with the theoretical computations. You can superpose the theoretical results and the practical | + | * Visualise the experimental results |
+ | * 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%> | ||
Line 142: | Line 146: | ||
==== -. Coverage ==== | ==== -. Coverage ==== | ||
+ | In this section, you will measure the coverage of LoRa under the three different radio configurations. Such configurations should ensure different reliability levels. | ||
- | 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: | + | 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: |
<code c++> | <code c++> |
exploring_lora.txt · Last modified: 2021/10/20 12:52 by samer