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Bug #1796

closed

PTCCH activation breaks dyn TS

Added by msuraev over 5 years ago. Updated over 5 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
Start date:
08/10/2016
Due date:
% Done:

0%

Spec Reference:

Description

As discussed in https://gerrit.osmocom.org/#/c/671/ activating PTCCH causes error which breaks dynamic channels.

I've tested it with sysmoBTS and the reason seems to be "double activation" of channels which works for PDTCH but fails 2nd time for PTCCH - see below.

<0006> oml.c:511 activating (bts=0,trx=0,ts=0,ss=0) pchan=CCCH+SDCCH4 ts_connect_as(CCCH+SDCCH4) logChComb=ccch_sdcch4
<0006> oml.c:808 Successful activation of L1 SAPI FCCH on TS 0
<0006> oml.c:808 Successful activation of L1 SAPI SCH on TS 0
<0006> oml.c:808 Successful activation of L1 SAPI BCCH on TS 0
<0006> oml.c:808 Successful activation of L1 SAPI AGCH on TS 0
<0006> oml.c:808 Successful activation of L1 SAPI PCH on TS 0
<0006> oml.c:808 Successful activation of L1 SAPI RACH on TS 0
<0006> oml.c:511 activating (bts=0,trx=0,ts=1,ss=0) pchan=SDCCH8 ts_connect_as(SDCCH8) logChComb=sdcch8
<0006> oml.c:511 activating (bts=0,trx=0,ts=2,ss=0) pchan=PDCH ts_connect_as(PDCH) logChComb=pdtch
<0006> oml.c:511 activating (bts=0,trx=0,ts=3,ss=0) pchan=PDCH ts_connect_as(PDCH) logChComb=pdtch
<0006> oml.c:511 activating (bts=0,trx=0,ts=4,ss=0) pchan=PDCH ts_connect_as(PDCH) logChComb=pdtch
<0006> oml.c:511 activating (bts=0,trx=0,ts=5,ss=0) pchan=TCH/F ts_connect_as(TCH/F) logChComb=tch_f
<0006> oml.c:511 activating (bts=0,trx=0,ts=6,ss=0) pchan=TCH/F ts_connect_as(TCH/F) logChComb=tch_f
<0006> oml.c:511 activating (bts=0,trx=0,ts=7,ss=0) pchan=PDCH ts_connect_as(PDCH) logChComb=pdtch
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 2
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 3
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 2
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 4
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 3
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 7
<0006> oml.c:808 Successful activation of L1 SAPI PTCCH on TS 2
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 4
<0006> oml.c:808 Successful activation of L1 SAPI PTCCH on TS 3
<0006> oml.c:808 Successful activation of L1 SAPI PDTCH on TS 7
<0006> oml.c:808 Successful activation of L1 SAPI PRACH on TS 2
<0006> oml.c:808 Successful activation of L1 SAPI PTCCH on TS 4
<0006> oml.c:808 Successful activation of L1 SAPI PRACH on TS 3
<0006> oml.c:808 Successful activation of L1 SAPI PTCCH on TS 7
<0006> oml.c:813 Error activating L1 SAPI PTCCH on TS 2: Invalid parameter
<0006> oml.c:808 Successful activation of L1 SAPI PRACH on TS 4
<0006> oml.c:813 Error activating L1 SAPI PTCCH on TS 3: Invalid parameter
<0006> oml.c:808 Successful activation of L1 SAPI PRACH on TS 7
<0006> oml.c:813 Error activating L1 SAPI PTCCH on TS 4: Invalid parameter
<0006> oml.c:813 Error activating L1 SAPI PTCCH on TS 7: Invalid parameter


Related issues

Related to OsmoBTS - Feature #1776: Implement fully dynamic TCH/F + TCH/H + PDCH switchingClosedneels07/12/2016

Actions
Related to OsmoBTS - Feature #1565: Dynamic PDCH / TCH switching: BTS partClosedneels02/23/201606/10/2016

Actions
Related to OsmoBTS - Bug #4500: osmo-bts-{sysmo,oc2g,litecell15}: PTCCH/U is not enabled on PDCH timeslotsStalledfixeria04/18/2020

Actions
Blocks OsmoPCU - Feature #1545: continuous timing advance loop using PTCCHStalledfixeria02/23/2016

Actions
Actions

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