Change in osmo-bts[master]: power_control: fix default EWMA smoothing coefficient (80% -> 50%)

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fixeria gerrit-no-reply at lists.osmocom.org
Tue Oct 20 15:44:30 UTC 2020


fixeria has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/20800 )


Change subject: power_control: fix default EWMA smoothing coefficient (80% -> 50%)
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power_control: fix default EWMA smoothing coefficient (80% -> 50%)

80% (alpha=0.2) is clearly too much, let's use 50% (alpha=0.5).

Change-Id: Ib7aec6c7223ffb2d4a312eee77247925beb8c905
Fixes: Ib6dcadbf14ef59696c6a546bd323bda92d399f17
Related: SYS#4916
---
M src/common/bts.c
1 file changed, 1 insertion(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/00/20800/1

diff --git a/src/common/bts.c b/src/common/bts.c
index 6fc0cb8..a1f29ff 100644
--- a/src/common/bts.c
+++ b/src/common/bts.c
@@ -326,7 +326,7 @@
 	bts->ul_power_target = -75;	/* dBm default */
 	bts->ul_power_hysteresis = 3;	/* -78 .. -72 dBm */
 	bts->ul_power_ctrl.pf_algo = MS_UL_PF_ALGO_EWMA;
-	bts->ul_power_ctrl.pf.ewma.alpha = 20; /* 80% smoothing */
+	bts->ul_power_ctrl.pf.ewma.alpha = 50; /* 50% smoothing */
 	bts->rtp_jitter_adaptive = false;
 	bts->rtp_port_range_start = 16384;
 	bts->rtp_port_range_end = 17407;

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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: Ib7aec6c7223ffb2d4a312eee77247925beb8c905
Gerrit-Change-Number: 20800
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <vyanitskiy at sysmocom.de>
Gerrit-MessageType: newchange
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