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Feature #4559

ttcn3-pcu: Add test to validate several LLC blocks over 1 TBF

Added by pespin about 2 months ago. Updated 4 days ago.

Status:
Feedback
Priority:
Normal
Assignee:
Target version:
-
Start date:
05/20/2020
Due date:
% Done:

90%

Spec Reference:

Description

To be tested both for Ul TBF and Dl Tbf.

The idea is to for example establish an uplink tbf, then do contention resolution (TLLI), then:
  1. UL RlcDataBlock(LlcBlock0) [BSN=0, CV=3]
  2. UL RlcDataBlock(LlcBlock0 finished, LlcBlock1 starts) [BSN=1, CV=2]
  3. UL RlcDataBlock(LlcBlock1 finished, LlcBlock2 starts and finishes, LlcBlock3 starts) [BSN=2, CV=1]
  4. UL RlcDataBlock(LlcBlock3 finishes) [BSN=3, CV=0]

And on SGSN we receive 4 packets, one for each LlcBlock.
We'll also receive some UL ACK/NACK we need to reply with CTRL ACK.

It may happen that we find some bug in RLCMAC c++ encoder/decoder when doing this, since I'm not sure if somebody tested this kind of llc block scenarios so far.

History

#1 Updated by pespin about 2 months ago

  • Description updated (diff)

#2 Updated by pespin 8 days ago

WIP test being worked on in osmo-ttcn3-hacks.git branch pespin/pcu-llcblock

#3 Updated by pespin 4 days ago

  • Status changed from New to Feedback
  • % Done changed from 0 to 90

Submitted here, and passing:
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/19073 pcu: Introduce test TC_ul_flow_multiple_llc_blocks

Once merged we can close the ticket.

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