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Fix ssb_PositionsInBurst_Bitmap to work with slot-synchronization

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Since the grand-parent commit, if possible, the gNBs synchronize on a
slot-level boundary. Some configuration files/command line overrides
left the same SSB position for two DUs in RFsim-based handover
scenarios, which then makes that the UE cannot decode the SSB.

This commit changes the positions such that this is possible again. In
the F1 HO docker-compose
(ci-scripts/yaml_files/5g_f1_rfsimulator/docker-compose.yaml), we set it
to 2 to send only one SSB (not 2 with bitmap 3).
This commit is contained in:
Robert Schmidt
2026-02-25 07:58:57 +01:00
parent 5e0e359dd6
commit 4e9a853696
3 changed files with 3 additions and 2 deletions
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ci-scripts/yaml_files/5g_f1_rfsimulator/docker-compose.yaml
+1 -1
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@@ -166,7 +166,7 @@ services:
--gNBs.[0].servingCellConfigCommon.[0].physCellId 1
--gNBs.[0].servingCellConfigCommon.[0].absoluteFrequencySSB 643296
--gNBs.[0].servingCellConfigCommon.[0].dl_absoluteFrequencyPointA 642024
--gNBs.[0].servingCellConfigCommon.[0].ssb_PositionsInBurst_Bitmap 3
--gNBs.[0].servingCellConfigCommon.[0].ssb_PositionsInBurst_Bitmap 2
--MACRLCs.[0].local_n_address 192.168.71.172
--rfsimulator.[0].serveraddr 192.168.71.181
ASAN_OPTIONS: detect_leaks=0:detect_odr_violation=0
ci-scripts/yaml_files/5g_rfsimulator_n2_ho/docker-compose.yaml
+1
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@@ -267,6 +267,7 @@ services:
--gNBs.[0].servingCellConfigCommon.[0].physCellId 1
--gNBs.[0].servingCellConfigCommon.[0].absoluteFrequencySSB 621312
--gNBs.[0].servingCellConfigCommon.[0].dl_absoluteFrequencyPointA 620040
--gNBs.[0].servingCellConfigCommon.[0].ssb_PositionsInBurst_Bitmap 2
--MACRLCs.[0].local_n_address 192.168.71.182
--MACRLCs.[0].remote_n_address 192.168.71.180
ASAN_OPTIONS: detect_leaks=0:detect_odr_violation=0
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.pci1.rfsim.conf
+1 -1
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@@ -112,7 +112,7 @@ gNBs =
hoppingId = 40;
p0_nominal = -90;
ssb_PositionsInBurst_Bitmap = 1;
ssb_PositionsInBurst_Bitmap = 2;
# ssb_periodicityServingCell
# 0 = ms5, 1=ms10, 2=ms20, 3=ms40, 4=ms80, 5=ms160, 6=spare2, 7=spare1