Differences

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--- exploring_lora [2018/09/29 14:11] – [4.1. Time on Air] samer
+++ exploring_lora [2018/09/29 15:39] – [4.3. Coverage] samer
@@ Line 131: / Line 131: @@
   * Analyze the obtained results and compare with the theoretical computations. You can superpose the theoretical results and the experimental ones on the same graph.
 </WRAP>
-==== -. Packet Delivery Ratio ====
-In this section, you will measure the Packet Delivery Ratio (PDR) under the three different radio configurations and for different transmission periods. For this, you can start by implementing a function on the client that measures the ratio of successfully delivered packets.
+==== -. [Classroom activity] Collisions and Packet Delivery Ratio ====
-Only for this test, all groups are required to use the same frequency (for example 868.10 MHz).
+In this section, you will measure the Packet Delivery Ratio (PDR) under different transmission periods. Only for this test, all groups are required to use the same frequency, spreading factor, and coding rate.
+You will start by implementing a function on the server that measures the ratio of successfully delivered packets.
 <WRAP center round help 100%>
@@ Line 144: / Line 146: @@
 ==== -. 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 geographical locations or Test Points (TP). These TPs should be astutely chosen to challenge the limits of LoRa transmission. Then you should implement a function on the server that measures the ratio of successfully delivered packets or PDR.
-<code c++>
-rf95.setModemConfig(RH_RF95::Bw125Cr45Sf128);
-rf95.setModemConfig(RH_RF95::Bw31_25Cr48Sf512);
-rf95.setModemConfig(RH_RF95::Bw125Cr48Sf4096);
-</code>
 <WRAP center round help 100%>
   * Draw the test points on a map.
-  * 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 PDR and the RSSI for each TP with each of the different radio configurations.
 </WRAP>
 ==== -. Path Loss ====