yigid/openairinterface5g
1
0
Fork 0
mirror of https://gitlab.eurecom.fr/oai/openairinterface5g.git synced 2026-07-13 04:30:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

add section with NR UE NTN example to doc/RUNMODEM.md

Browse Source
This commit is contained in:
Thomas Schlichter
2024-05-07 20:35:22 +02:00
parent 1e47311259
commit 4ddb2d3bac
1 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
doc/RUNMODEM.md
View File

@@ -188,6 +188,18 @@ cd cmake_targets
sudo ./ran_build/build/nr-softmodem -O ../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band66.fr1.25PRB.usrpx300.conf --sa --rfsim --rfsimulator.prop_delay 238.74
```
### NR UE
At UE side, there are two main parameters to cope with the large NTN propagation delay, cellSpecificKoffset and ta-Common.
`cellSpecificKoffset` is the same as for gNB and can be provided to the UE via command line parameter `--ntn-koffset`.
`ta-Common` is a common timong advance and can be provided to the UE via command line parameter `--ntn-ta-common` in milliseconds.
So an example NR UE command for FDD, 5MHz BW, 15 kHz SCS, GEO satellite 5G NR NTN is this:
```
cd cmake_targets
sudo ./ran_build/build/nr-uesoftmodem --band 66 -C 2152680000 --CO -400000000 -r 25 --numerology 0 --ssb 48 --sa --rfsim --rfsimulator.prop_delay 238.74 --ntn-koffset 478 --ntn-ta-common 477.48
```
# Specific OAI modes
## phy-test setup with OAI UE