The scailng problem of imported scene in AODT

junxian · July 29, 2024, 2:38pm

Hello,

Based on the AODT documentation, we generated the USD file via the Scene Importer. The format appears to be correct, but when we deploy the UE and start the simulation, the UEs are randomly generated, as shown in the attached video.

If we trace the log in aodt_sim, we can find the warning message as follow:

[DEBUG] Got message type: "mobility_request"
[DEBUG] got mobility request
[INFO] Did not find attributes sim:duration/sim:interval with a positive value so using slot/symbol instead
[DEBUG] Scenario users: 1, batches: 10, slot/symbol mode: 1, slots_per_batch: 1, samples_per_slot: 1, duration (per batch): 0.0005, interval: 0.0005, ue_min_speed=1.5, ue_max_speed=2.5, is_seeded=0, seed=0

[DEBUG] The point=(2820.73, -977.633, -192.605) was not found in list of triangles so snapping to triangle_id=558, new_point=(3934.83, -977.633, 0)
[DEBUG] Manually inserted users: 1
[DEBUG] Vertices: 693, Triangles: 1137
[DEBUG] Could not get node /World/spawn_zone.
[DEBUG] Generating users
[DEBUG] Kept manual UE at: 3934.83 -977.633 0
[DEBUG] Beginning of mobility ue=1/1, batch=1/10, point=(3934.83, -977.633, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=2/10, point=(4093.95, -1300.87, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=3/10, point=(4804.92, 1419.42, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=4/10, point=(-940.341, -1567.24, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=5/10, point=(335.546, 2819.6, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=6/10, point=(192.856, 2945.44, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=7/10, point=(-3784.83, 1474.67, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=8/10, point=(-1571.36, 2992.15, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=9/10, point=(1462.94, -1069.94, 0)
[DEBUG] Beginning of mobility ue=1/1, batch=10/10, point=(1312.48, -2246.94, 0)
[DEBUG] Found UE panel node at: /Panels/panel_01

I believe the problem may be due to the scaling of the generated USD file. Both the GML and USD files are attached in the zip file. However, I am not sure how to fix this issue. Can anyone provide suggestions or comments?

Thank you.

Best regards,
JunXian

8fcadfile.zip (75.5 KB)

kpasad1 · July 29, 2024, 6:55pm

@junxian In the “batch mode”, one batch corresponds to a UE drop at a random location. Within this batch, the UE will move around in a random trajectory for the “duration” amount of seconds. For a simpler deployment please try this:
In scenario settings, set the following:

number of ues = 1
“batches” =1
Simulation mode - “duration”
duration - 10sec
interval - 1 sec
Manually add the UE at desired location (right click on the map at desired location->aerial->deploy ue)
Generate UEs
Start UE mobility

Then you will see the UE move around for 10 seconds

junxian · August 5, 2024, 2:07am

@kpasad1 Thank you. We have tested this workflow, and the results are correct. However, for the RAN simulation, we can only use the slot mode. Could you please guide us on how to repeat the workflow for the RAN simulation?

kpasad1 · August 5, 2024, 7:27pm

@junxian RAN only supports slot mode. This is because RAN simulation must conform to the 5G numerology. You enable batches. At every batch, the UE is dropped at a random location and will run for the number of configured slots.

junxian · August 6, 2024, 2:37am

@kpasad1 Thank you for your reply. Is it possibile to set the mobility model in the slot mode for the RAN simulation?

kpasad1 · August 6, 2024, 6:32am

@junxian Can you elaborate by mobility model requirement? You can set waypoints for the UE to move along. However, since the sampling happens on milli second intervals, you will not observe any significant movement.

junxian · August 12, 2024, 2:42am

@kpasad1 Sorry for the late reply. In the RAN Simulation, we can set the variable “slots_per_batch”. However, I still can find only one simulation result in the log of AODT. The log is attached as following:

[DEBUG] Got message type: "start_sim_request"
[DEBUG] got start sim request
[INFO] Stage up-axis: Z
[INFO] Meters per unit: 0.01
[DEBUG] Found UE panel node at: /Panels/panel_01
[DEBUG] Found UE panel node at: /Panels/panel_01
[DEBUG] Found UE panel node at: /Panels/panel_01
[INFO] Found RU panel node at: /Panels/panel_02
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Clearing all tables.
[DEBUG] Adding 1 time info results to clickhouse DB
[DEBUG] Adding 1 scenario results to clickhouse DB
[DEBUG] Adding 14 materials to clickhouse DB
[DEBUG] Adding 1 world results to clickhouse DB
[DEBUG] Found attribute /Scenario.sim:em:rays (value=500 in thousands)
[DEBUG] Found attribute /Scenario.sim:em:interactions (value=5)
[DEBUG] Found attribute /Scenario.sim:enable_training (value=0)
[INFO] Did not find attributes sim:duration/sim:interval with a positive value so using slot/symbol instead
[DEBUG] Scenario users: 3, batches: 1, slot/symbol mode: 1, slots_per_batch: 5, samples_per_slot: 1, duration (per batch): 0.0025, interval: 0.0005, ue_min_speed=100, ue_max_speed=100, is_seeded=0, seed=0

====================================

TDD pattern: DDDDDDDDDDDDDDDDDDDD
gNB power      43.00 dBm
UE power       26.00 dBm
gNB antennas   4 
UE antennas    4 
DL HARQ        0 
UL HARQ        0 
====================================
[INFO] Computing all links for cell association for batch 0 (wideband CFRs enabled, fft_size=4096)...
[DEBUG] Found 1472 paths for Tx 1
[DEBUG] Timing EMSolver: 16.9086 ms

InitCellAssoc - cell=0 numUes=3 batch=0
InitCellAssoc = cellUeAssoc[0][0]=0
InitCellAssoc = cellUeAssoc[0][1]=1
InitCellAssoc = cellUeAssoc[0][2]=2[INFO] Computing sample=1/1, batch=0, slot=0, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 5904 paths for Tx 1
[DEBUG] Timing EMSolver: 39.2169 ms
[DEBUG] Found 5904 paths for Tx 1
[DEBUG] Timing EMSolver: 39.5519 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0       104          32       0      1       0    39.38        40.00           0
   0         1          1         0         104       0      1       0    44.07        40.00           0
   0         2          2       136         136       0      1       0    34.28        36.56           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 11808 ray results
[DEBUG] Adding 196608 CFR results to clickhouse db
[DEBUG] Inserting 2 panels into DB
[DEBUG] Adding 3 telemetry data to clickhouse DB
[INFO] Finished computing and storing results in database ov2

At the very least, I hope to collect the simulation results for different slots. Do you have any suggestions or comments on how to fix this issue? Thank you.

kpasad1 · August 16, 2024, 11:50pm

@junxian Are you able to share the USD file?
Do the following:

Next to the live button on the top right, there is a drop down menu
Do end and merge.
From the file menu, so save
Send us the saved USD file.

junxian · August 17, 2024, 10:47am

@kpasad1 Thank you. I will redo our simulation and provide the USD file later.

junxian · August 21, 2024, 3:17am

@kpasad1 I have re-executed the experiment, and the issue no longer persists. Below are the logs from the RAN simulation:

====================================

TDD pattern: DDDDDDDDDDDDDDDDDDDD
gNB power      43.00 dBm
UE power       26.00 dBm
gNB antennas   4 
UE antennas    4 
DL HARQ        0 
UL HARQ        0 
====================================
[INFO] Computing all links for cell association for batch 0 (wideband CFRs enabled, fft_size=4096)...
[DEBUG] Found 2500 paths for Tx 1
[DEBUG] Timing EMSolver: 25.1505 ms

InitCellAssoc - cell=0 numUes=5 batch=0
InitCellAssoc = cellUeAssoc[0][0]=0
InitCellAssoc = cellUeAssoc[0][1]=1
InitCellAssoc = cellUeAssoc[0][2]=2
InitCellAssoc = cellUeAssoc[0][3]=3
InitCellAssoc = cellUeAssoc[0][4]=4[INFO] Computing sample=1/10, batch=0, slot=0, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 77.9606 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 78.823 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0          84       0      1       0    39.82        40.00           0
   0         1          1       216          28       0      2       0    36.81        35.85           0
   0         2          2       244          28       0      1       0    31.85        34.94           0
   0         3          3       148          68       0      2       0    53.47        40.00           0
   0         4          4        84          64       0      1       0    47.56        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Computing sample=2/10, batch=0, slot=1, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.5359 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.9027 ms
[DEBUG] sending message: "heartbeat" to: 36d93422-b679-403b-bbd8-b7d6262f2adb with payload:
{
    "count": 34,
    "periodicity_in_seconds": 30
}
[DEBUG] Join Channel Callback called
	Result: 0
	User Data Ptr: 0x6399397873a0
	From: 44O6DS6M70GJWFTO
	Event: Message
[DEBUG] [44O6DS6M70GJWFTO]: {
    "from": "36d93422-b679-403b-bbd8-b7d6262f2adb",
    "message_len": 0,
    "message_payload": {
        "count": 34
    },
    "message_type": "heartbeat_reply",
    "to": "07cea8fa-a0d3-4394-9c68-efa19d6e583c"
}
[DEBUG] Got message type: "heartbeat_reply"

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0          52      27      1       0    38.87        40.00           0
   0         1          1       216          36      27      2       0    37.03        35.92           0
   0         2          2       252          20      27      1       0    31.65        34.80           0
   0         3          3       156          60      27      2       0    53.85        40.00           0
   0         4          4        52         104      27      1       0    46.00        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Computing sample=3/10, batch=0, slot=2, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.258 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.7962 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0          72      27      1       0    38.72        40.00           0
   0         1          1       212          60      27      2       0    35.72        35.80           0
   0         2          2       144          52      27      1       0    36.66        39.08           0
   0         3          3       196          16      27      2       0    50.94        40.00           0
   0         4          4        72          72      27      1       0    46.45        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Computing sample=4/10, batch=0, slot=3, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.4252 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.8035 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0        76          36      27      2       0    40.70        39.15           0
   0         1          1       192          80      27      2       0    35.09        35.19           0
   0         2          2       112          80      27      1       0    37.34        39.22           0
   0         3          3        36          40      27      2       0    49.14        37.13           0
   0         4          4         0          36      27      1       0    41.73        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Computing sample=5/10, batch=0, slot=4, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.227 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 75.1087 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0           8      27      1       0    37.92        40.00           0
   0         1          1       180          92      27      2       0    35.11        34.31           0
   0         2          2        80         100      27      1       0    36.88        39.05           0
   0         3          3        44          36      27      1       0    47.09        40.00           0
   0         4          4         8          36      27      1       0    42.51        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Computing sample=6/10, batch=0, slot=5, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.6681 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.9323 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0           4      27      2       0    35.05        36.12           0
   0         1          1       164         108      27      1       0    43.86        40.00           0
   0         2          2        40          44      27      1       0    35.47        37.88           0
   0         3          3        84          80      27      2       0    50.42        39.51           0
   0         4          4         4          36      27      1       0    42.24        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Finishing writing results to clickhouse DB...
[INFO] Computing sample=7/10, batch=0, slot=6, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.3602 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.9008 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0        60         116      27      2       0    40.41        38.15           0
   0         1          1       176          68      27      2       0    36.36        33.18           0
   0         2          2         0          32      27      1       0    32.26        37.99           0
   0         3          3       244          28      27      2       0    44.87        36.67           0
   0         4          4        32          28      27      1       0    42.15        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Finishing writing results to clickhouse DB...
[INFO] Computing sample=8/10, batch=0, slot=7, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.1837 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.8348 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0        68          32      27      2       0    41.12        39.04           0
   0         1          1       172         100      27      2       0    34.53        30.77           0
   0         2          2         0          32      27      1       0    31.87        37.57           0
   0         3          3       100          72      27      1       0    49.55        40.00           0
   0         4          4        32          36      27      1       0    42.57        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Finishing writing results to clickhouse DB...
[INFO] Computing sample=9/10, batch=0, slot=8, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.4442 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.9407 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0        72          40      27      2       0    41.50        39.23           0
   0         1          1       176          96      27      2       0    34.07        30.16           0
   0         2          2         0          32      27      1       0    30.72        36.50           0
   0         3          3       112          64      27      1       0    48.51        40.00           0
   0         4          4        32          40      27      1       0    43.64        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Finishing writing results to clickhouse DB...
[INFO] Computing sample=10/10, batch=0, slot=9, sample_within_slot=0 (wideband CFRs enabled, fft_size=4096)
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.2448 ms
[DEBUG] Found 10000 paths for Tx 1
[DEBUG] Timing EMSolver: 74.7719 ms

==============================================  results  ================================================
cell idx    grp idx   rnti     startPrb     nPrb    MCS   layer     RV   sinrPreEq    sinrPostEq     CRC
   0         0          0         0          28      27      2       0    37.02        35.10           0
   0         1          1       176          48      27      2       0    36.05        32.36           0
   0         2          2       224          48      27      1       0    30.86        34.67           0
   0         3          3        92          84      27      1       0    46.69        40.00           0
   0         4          4        28          64      27      1       0    43.92        40.00           0
=========================================================================================================
Note: sinrPostEq is capped at 40 dB and floored at -10 dB. 
[DEBUG] Adding 20000 ray results
[DEBUG] Adding 327680 CFR results to clickhouse db
[INFO] Finishing writing results to clickhouse DB...
[INFO] Finishing writing results to clickhouse DB...
[DEBUG] Inserting 2 panels into DB
[DEBUG] Adding 50 telemetry data to clickhouse DB
[INFO] Finished computing and storing results in database ov2

We also observed that the UEs experienced slight movement between slots (with the speed set at a maximum value of 138 m/s). Thank you for your guidance throughout this process.

system · September 4, 2024, 3:18am

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The scailng problem of imported scene in AODT

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