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Feature #4545

closed

Automatic TTCN3 tests for frequency hopping support in BSC

Added by laforge almost 4 years ago. Updated over 3 years ago.

Status:
Resolved
Priority:
High
Assignee:
Category:
-
Target version:
-
Start date:
05/12/2020
Due date:
% Done:

100%

Spec Reference:

Description

We currently have no testing at all whether or not the BSC encodes the various "Channel Description IEs" as expected when frequency hopping is in use.

We know it worked once a decade ago when we first implemented it with Siemens BTS, but that's a long time ago.

tnt recently reported he had frequency hopping active on an Ericsson BTS driven by OsmoBSC, but only signalling up to Location Update, no voice channels in use. Also, that is just a single manual test and not an automatic test.

Let's try to cover this part of the BSC codebase with TTCN-3 tests.


Checklist

  • RSL CHANnel ACTIVation message
  • RSL IMMEDIATE ASSIGN COMMAND
  • SYSTEM INFORMATION Type 4 (CBCH)
  • ASSIGNMENT COMMAND
  • HANDOVER COMMAND
  • Fix wrong IEs and their order in Handover Command
  • Fix missing Channel Allocation IE in SI4 CBCH Channel Description
  • Fix Mobile Allocation bit-mask composition (wrong bits, padding) added
  • Verify encoding of ARFCN 0 in MA bit-mask
  • Fix encoding of ARFCN 0 in MA bit-mask
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