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Bug #6079

closed

Errors in processing ARFCNs from GSM 850 BTS, mobile asking for ARFCN 32904

Added by laforge 8 months ago. Updated 3 months ago.

Status:
Resolved
Priority:
Normal
Assignee:
Category:
OsmocomBB Layer 3 (RR/MM/CC)
Target version:
-
Start date:
06/29/2023
Due date:
% Done:

100%

Resolution:
Spec Reference:

Description

See #6078 and https://gerrit.osmocom.org/c/osmocom-bb/+/33532

I've configured osmo-bsc/bts with a 850MHz cell on ARFCN 136. I then try to register to it from osmocom-bb/mobile via trxcon and get:

20230628205120086 DL1C NOTICE trxcon(0)[0x61200004f720]{BCCH_CCCH}: L1CTL_DM_EST_REQ indicates single ARFCN PCS1900 136 (l1ctl.c:569)
20230628205120086 DTRXC ERROR trx_interface(0)[0x61200004f8a0]{RSP_WAIT}: ARFCN 32904 not defined (trx_if.c:321)

Some research shows that mobile will do something like "ARFCN 136 | PCS" because SI1 rest octests contains "Band Indicator: 1900" for this cell.


Related issues

Related to OsmoBSC - Bug #6078: SI1 rest octests indicated "Band Indicator: 1900" on a 850MHz BTSResolvedlaforge06/28/2023

Actions
Actions #1

Updated by laforge 8 months ago

  • Related to Bug #6078: SI1 rest octests indicated "Band Indicator: 1900" on a 850MHz BTS added
Actions #2

Updated by jolly 3 months ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 10

#6079 and #6078 are the same issue and will be solved together.

Actions #3

Updated by jolly 3 months ago

  • Status changed from In Progress to Resolved
  • % Done changed from 10 to 100

Patch to fix this issue has been merged. https://gerrit.osmocom.org/c/osmocom-bb/+/33532

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