[PATCH] osmo-bsc[master]: handover_logic.c: always do inter-cell channel activation

Neels Hofmeyr gerrit-no-reply at lists.osmocom.org
Fri Feb 16 15:11:49 UTC 2018

Hello Jenkins Builder,

I'd like you to reexamine a change.  Please visit


to look at the new patch set (#2).

handover_logic.c: always do inter-cell channel activation

In commit [1], the channel activation kind was modified out-of-context to use
Immediate Assignment in case of intra-cell re-assignment. This so far hasn't
worked out in tests, so instead stay with the strategy to use
RSL_ACT_INTER_ASYNC also for re-assignment within the same cell. We may move to
RSL_ACT_INTRA_IMM_ASS in a separate patch after proper testing.

[1]: 5eaa4fb821751b70ad2b864d8765ff96bd301996,
     "HO: add indicators for inter-cell and async ho, use for chan act type",

Note that so far, no re-assignment within cells is triggered by the current
handover decision algorithm, so the effect will be really noticeable with
handover decision 2 that is coming up.

See feature OS#2949 which asks for implementing actual RR Assignment to
handover within a cell.

Related: OS#2949
Change-Id: Ia3d979094fa16620f1acc5933418797829710ba8
M src/libbsc/handover_logic.c
1 file changed, 1 insertion(+), 3 deletions(-)

  git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/93/6493/2

diff --git a/src/libbsc/handover_logic.c b/src/libbsc/handover_logic.c
index 6eada5b..fda28dd 100644
--- a/src/libbsc/handover_logic.c
+++ b/src/libbsc/handover_logic.c
@@ -147,9 +147,7 @@
 	/* FIXME: do we have a better idea of the timing advance? */
 	rc = rsl_chan_activate_lchan(new_lchan,
-				     ho->inter_cell
-				       ? (ho->async ? RSL_ACT_INTER_ASYNC : RSL_ACT_INTER_SYNC)
-				       : RSL_ACT_INTRA_IMM_ASS,
+				     ho->async ? RSL_ACT_INTER_ASYNC : RSL_ACT_INTER_SYNC,
 	if (rc < 0) {
 		LOGP(DHO, LOGL_ERROR, "could not activate channel\n");

To view, visit https://gerrit.osmocom.org/6493
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ia3d979094fa16620f1acc5933418797829710ba8
Gerrit-PatchSet: 2
Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Owner: Neels Hofmeyr <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder

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