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Hello Jenkins Builder,
I'd like you to reexamine a change. Please visit
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to look at the new patch set (#4).
Change subject: TCH DL, FR & EFR: reshape SIDs per 06.31/06.81 section 5.1.2
......................................................................
TCH DL, FR & EFR: reshape SIDs per 06.31/06.81 section 5.1.2
Section 5.1.2 of GSM 06.31 & 06.81 (DTX specs for FR & EFR) specifies
the expected shape of radio downlink in the presence of SIDs: one SID
frame after each talkspurt (after speech frames), and one SID frame
in every SACCH-aligned position every 480 ms, or if the actual SACCH-
aligned position is taken up by FACCH, then just one SID frame as
soon as possible after that FACCH - and no transmitted SID frames
in other positions.
This just-referenced spec section was written with the assumption
that it will only be applied when DTXd is enabled - however, if
the RTP stream for call leg B DL comes from call leg A UL (TrFO),
then we are going to receive SID frames in the stream intended for
our DL even when DTXd is disabled or not supported altogether.
The easiest solution is to apply FR/EFR (and in the future HR1 too)
DTXd logic whenever the incoming RTP stream contains SID frames,
irrespective of physical DTXd enable/disable state. If we apply such
"logical DTXd" when physical DTXd is disabled, the BTS model PHY
will end up transmitting induced BFIs (dummy FACCH or inverted CRC3)
in those frame positions where the "logical DTXd" function says
"please transmit nothing".
The point remains, however, that the prescribed SID shape on the
radio downlink (expected positions of SID frames) won't happen on its
own: in the case of TrFO, whichever SID frames are present will be
in wrong positions for leg B DL, and even in the case of transcoded
calls the responsibility for DL SID shaping cannot be placed on the
RTP stream source because that source won't know where SACCH alignment
will lie. Therefore, the necessary DL SID reshaping has to be done
in the RTP stream receiver in OsmoBTS.
Related: OS#5996
Change-Id: I924ab21952dcf8bb03ba7ccef790474bf66fc9e5
---
M include/osmo-bts/lchan.h
M src/common/l1sap.c
2 files changed, 228 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/14/32714/4
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Gerrit-Change-Number: 32714
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pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/osmocom-bb/+/32739 )
Change subject: layer23: Support setting P-TMSI in test sim
......................................................................
Patch Set 1:
(1 comment)
Patchset:
PS1:
follow-up TODO patches:
- Patch adding support to store RAI
- Patch adding support for real SIM to store P-TMSI + P-TMSI signature + RAI + status to EF.LOCIGPRS (3GPP TS 51.011 10.3.33)
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Hello Jenkins Builder,
I'd like you to reexamine a change. Please visit
https://gerrit.osmocom.org/c/libosmo-gprs/+/32738
to look at the new patch set (#2).
Change subject: sm: Provide RAI obtained from network
......................................................................
sm: Provide RAI obtained from network
MS needs to store this information, hence the app needs to be provided
with it.
Change-Id: Icd357d8c7f4848441da011d59a4e520785d64779
---
M include/osmocom/gprs/sm/sm_prim.h
M src/sm/sm.c
M src/sm/sm_prim.c
3 files changed, 16 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmo-gprs refs/changes/38/32738/2
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pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-pcu/+/32694 )
Change subject: gprs_rlcmac: also use PCU_IF_SAPI_PCH_DT for paging MAC blocks
......................................................................
Patch Set 3:
(1 comment)
File src/pcu_l1_if.cpp:
https://gerrit.osmocom.org/c/osmo-pcu/+/32694/comment/d1c72017_876032ff
PS3, Line 291: {
better document here that TLLI is only really required for IMM ASS since it requires confirmation from BTS.
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