Feature #1525

Use the Radio Access Capabilites that are being transferred via BSSGP (downlink)

Added by zecke over 4 years ago. Updated 8 months ago.

Target version:
Start date:
Due date:
% Done:


Spec Reference:


Parsing these RA Cap is prepared but not enabled, since the osmo SGSN sends bogus values. This should be fixed and the use of those RA Cap values should be enabled.

Note that the current analyse functions which extract the (EGPRS) MS class do not match the access type technologies field, which must be fixed. This is also relevant for the extraction of the 8PSK power class (see #2457)

Related issues

Related to OsmoPCU - Bug #3499: pcu is logging "Allocating DL TBF: MS_CLASS=0/0" ; TLV parsing code commented?Resolved08/24/2018


#1 Updated by zecke over 4 years ago

  • Tracker changed from Bug to Feature

#2 Updated by laforge over 2 years ago

  • Assignee changed from msuraev to stsp

#3 Updated by msuraev almost 2 years ago

  • Related to Bug #3499: pcu is logging "Allocating DL TBF: MS_CLASS=0/0" ; TLV parsing code commented? added

#4 Updated by laforge over 1 year ago

  • Assignee changed from stsp to lynxis

#5 Updated by laforge 10 months ago

  • Assignee changed from lynxis to sysmocom
  • Priority changed from Low to Normal

#6 Updated by pespin 9 months ago

This ticket is a duplicate (talking about same issue) of #3499

We need to add some TTCN3 test to check emulation-SGSN sending this data to PCU and make sure it's taken into account.

Related code: gprs_bssgp_pcu_rx_dl_ud() (src/gprs_bssgp_pcu.cpp).

Related commits (from older to newer, they are together in history):

#7 Updated by pespin 9 months ago

  • Assignee changed from sysmocom to pespin

#8 Updated by pespin 8 months ago

Thanks to all recent work done in osmo-pcu CSN1/RLCMAC decoder, I could investigate the issue further, and it should be fixed by

Tested with:

keith give it a try if you want.

PS: I also submitted a patch to wirershark to be able to decode non CS-1 (e)gprs data blocks, see #1542.

Closing this ticket and keeping #3499 (duplicate of this ticket) open until they are merged.

#9 Updated by pespin 8 months ago

  • Status changed from New to Resolved
  • % Done changed from 0 to 100

Also available in: Atom PDF

Add picture from clipboard (Maximum size: 48.8 MB)