Today I improved and implemented the TR398 Mesh RvR test in our LANforge software and testbed. This test requires a TR398 + Mesh testbed, and the parts of interest for this particular test are the Root, Node-1, and STA chambers. All three are connected via attenuators. In this test case, the Root and Node-1 chambers vary the attenuation to emulate a backhaul signal level of -60, -70, and -80. At each iteration, a TCP upload and download throughput test is run.
First, I calibrated using two of our CT521a devices acting as AP and/or STA. This requires some initial setup, and physically placing the CT521a in the correct location. After that, the TR398 automation code will do the calibration automatically. Here’s a picture of the main chamber in calibration mode. Note that the antenna being used for the calibration is in the center of the turntable.
The Node-1 system also needs a calibration AP to calibrate its backhaul and STA to Node-1 link. I raised it up on some foam blocks so that the directional antennas were pointing at the calibration antennas similar to how the DUT AP will be positioned:
Once the calibration is complete, the DUT APs are placed back in the position formerly occupied by the calibration devices.
And then run the TR398 test case, which passes all tests as currently written with this DUT:
See the full report here: https://www.candelatech.com/examples/TR-398v2-report-2022-05-05-04-19-30-mesh-rvr.pdf