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move NTN LEO config to band 254 and update doc/RUNMODEM.md

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This commit is contained in:
Thomas Schlichter
2025-02-14 17:04:47 +00:00
parent 11b87d8744
commit 0bc46a22c6
2 changed files with 15 additions and 15 deletions
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ci-scripts/conf_files/gnb.sa.band66.ntn.leo.25prb.rfsim.conf → ci-scripts/conf_files/gnb.sa.band254.u0.25prb.rfsim.ntn-leo.conf
+9 -9
View File
@@ -29,11 +29,11 @@ gNBs =
# downlinkConfigCommon
#frequencyInfoDL
# this is 2150.43 MHz + 14 PRBs@15kHz SCS (same as initial BWP), points to Subcarrier 0 of RB#10 of SSB block
absoluteFrequencySSB = 430590;
dl_frequencyBand = 66;
# this is 2150.43 MHz
dl_absoluteFrequencyPointA = 430086;
# GSCN 6221
absoluteFrequencySSB = 497770;
dl_frequencyBand = 254;
# this is 2486.15 MHz
dl_absoluteFrequencyPointA = 497230;
#scs-SpecificCarrierList
dl_offstToCarrier = 0;
# subcarrierSpacing
@@ -53,9 +53,9 @@ gNBs =
#uplinkConfigCommon
#frequencyInfoUL
ul_frequencyBand = 66;
# this is 1750.43 MHz
ul_absoluteFrequencyPointA = 350086;
ul_frequencyBand = 254;
# this is 1612.65 MHz
ul_absoluteFrequencyPointA = 322530;
#scs-SpecificCarrierList
ul_offstToCarrier = 0;
# subcarrierSpacing
@@ -89,7 +89,7 @@ gNBs =
#ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR
#1=oneeighth,2=onefourth,3=half,4=one,5=two,6=four,7=eight,8=sixteen
ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR = 4;
#oneHalf (0..15) 4,8,12,16,...60,64
#one (0..15) 4,8,12,16,...60,64
ssb_perRACH_OccasionAndCB_PreamblesPerSSB = 15;
#ra_ContentionResolutionTimer
#(0..7) 8,16,24,32,40,48,56,64
doc/RUNMODEM.md
+6 -6
View File
@@ -296,11 +296,11 @@ To enable this feature, the `disable_harq` flag has to be added to the gNB conf
...
```
The settings for a transparent GEO satellite scenario are already provided in the file `ci-scripts/conf_files/gnb.sa.band66.ntn.25prb.rfsim.conf`.
The settings for a transparent GEO satellite scenario are already provided in the file `ci-scripts/conf_files/gnb.sa.band254.u0.25prb.rfsim.ntn.conf`.
Using this conf file, an example gNB command for FDD, 5 MHz BW, 15 kHz SCS, transparent GEO satellite 5G NR NTN is this:
```
cd cmake_targets
sudo ./ran_build/build/nr-softmodem -O ../ci-scripts/conf_files/gnb.sa.band66.ntn.25prb.rfsim.conf --rfsim
sudo ./ran_build/build/nr-softmodem -O ../ci-scripts/conf_files/gnb.sa.band254.u0.25prb.rfsim.ntn.conf --rfsim
```
To configure NTN gNB with 32 HARQ processes in downlink and uplink, add these settings in conf files under section `gNBs.[0]`
@@ -316,11 +316,11 @@ To simulate a LEO satellite channel model with rfsimulator in UL (DL is simulate
@include "channelmod_rfsimu_LEO_satellite.conf"
```
The settings for a transparent LEO satellite scenario are already provided in the file `ci-scripts/conf_files/gnb.sa.band66.ntn.leo.25prb.rfsim.conf`.
The settings for a transparent LEO satellite scenario are already provided in the file `ci-scripts/conf_files/gnb.sa.band254.u0.25prb.rfsim.ntn-leo.conf`.
Using this conf file, an example gNB command for FDD, 5 MHz BW, 15 kHz SCS, trasparent LEO satellite 5G NR NTN is this:
```
cd cmake_targets
sudo ./ran_build/build/nr-softmodem -O ../ci-scripts/conf_files/gnb.sa.band66.ntn.leo.25prb.rfsim.conf --rfsim
sudo ./ran_build/build/nr-softmodem -O ../ci-scripts/conf_files/gnb.sa.band254.u0.25prb.rfsim.ntn-leo.conf --rfsim
```
### NR UE
@@ -342,7 +342,7 @@ position0 = {
So an example NR UE command for FDD, 5MHz BW, 15 kHz SCS, transparent GEO satellite 5G NR NTN is this:
```
cd cmake_targets
sudo ./ran_build/build/nr-uesoftmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.conf --band 66 -C 2152680000 --CO -400000000 -r 25 --numerology 0 --ssb 48 --rfsim --rfsimulator.prop_delay 238.74
sudo ./ran_build/build/nr-uesoftmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.conf --band 254 -C 2488400000 --CO -873500000 -r 25 --numerology 0 --ssb 60 --rfsim --rfsimulator.prop_delay 238.74
```
For LEO satellite scenarios, the parameter `--ntn-initial-time-drift` must be provided via command line, as the UE needs this value to compensate for the time drift during initial sync, before SIB19 was received.
@@ -352,7 +352,7 @@ Also, to perform an autonomous TA update based on the DL drift, the boolean para
So an example NR UE command for FDD, 5MHz BW, 15 kHz SCS, transparent LEO satellite 5G NR NTN is this:
```
cd cmake_targets
sudo ./ran_build/build/nr-uesoftmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.conf --band 66 -C 2152680000 --CO -400000000 -r 25 --numerology 0 --ssb 48 --rfsim --rfsimulator.prop_delay 20 --rfsimulator.options chanmod --time-sync-I 0.1 --ntn-initial-time-drift -46 --autonomous-ta
sudo ./ran_build/build/nr-uesoftmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.conf --band 254 -C 2488400000 --CO -873500000 -r 25 --numerology 0 --ssb 60 --rfsim --rfsimulator.prop_delay 20 --rfsimulator.options chanmod --time-sync-I 0.1 --ntn-initial-time-drift -46 --autonomous-ta
```
# Specific OAI modes