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Bug #2761

osmo-gsm-tester: add test case: Test 2nd trx is correctly used

Added by pespin 9 months ago. Updated 5 days ago.

Status:
Feedback
Priority:
Normal
Assignee:
Target version:
-
Start date:
12/15/2017
Due date:
% Done:

50%

Estimated time:
Spec Reference:

Description

We may need to add a "supported_trx" config in resources.conf to specify how many TRX can a given BTS support. This way we can use scenarios to filter for a BTS which supports that number of TRX (but we cannot match for <=, need to think more about it). Alternatively, we can use one of the BTS that we now supports it, like ":octphy".

To test that the 2nd trx is used correctly, we can use an already existing BSC/BTS VTY cmd called "channel allocator" which can have parameters "ascend" or "descend".

One of those options changes the algo used to allocate channels to start from the latest one available, ie. last timeslot in the 2nd TRX.

We can use that and place a voice call and make sure somehow that the 2nd TRX is being used (checking the log file?).


Related issues

Related to OsmoGSMTester - Feature #2760: osmo-gsm-tester: Add support for several (osmo-)trx to OsmoBtsTrxIn Progress2017-12-15

Related to OsmoBSC - Bug #3560: 2nd TRX of 2-TRX osmo-bts-trx setup not working anymoreNew2018-09-17

History

#1 Updated by pespin 9 months ago

  • Related to Feature #2760: osmo-gsm-tester: Add support for several (osmo-)trx to OsmoBtsTrx added

#2 Updated by laforge 9 months ago

On Fri, Dec 15, 2017 at 12:35:49PM +0000, pespin [REDMINE] wrote:

We can use that and place a voice call and make sure somehow that the
2nd TRX is being used (checking the log file?).

The VTY would also show it, but that's of course also not very elegant.

#3 Updated by pespin 30 days ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 50

Following patches have been submitted to test multiTRX with nanoBTS.
https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/10582 Add channel_allocator cfg attr to bts resources
remote: https://gerrit.osmocom.org/#/c/osmo-gsm-tester/+/10583 Add testsuite + scenarios to test nanoBTS multiTRX

Tests are passing but looking at the logs it seems only channels from first TRX are available when looking for a channel.

#4 Updated by pespin 5 days ago

  • Status changed from In Progress to Feedback
  • Assignee changed from pespin to dexter

Assigning to dexter since he was assigned a related ticket to fix second TRX not being used during channel allocation time when using a nanobts with MultiTRX.
Once it has been fixed and we see multitrx tests in osmo-gsm-tester using the second TRX, we can close this ticket.

#5 Updated by laforge 5 days ago

pespin wrote:

Assigning to dexter since he was assigned a related ticket

which "related" ticket? And why is it not marked as related? The only ticket marked as "related" is #2760 and that's not assigned to dexter

#6 Updated by laforge 5 days ago

  • Related to Bug #3560: 2nd TRX of 2-TRX osmo-bts-trx setup not working anymore added

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