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Clean up phy_init_nr_gNB()

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- variable is_secondary_gnb is not used anywhere, so remove
- variable lowmem is not used/defines should be changed, so remove
This commit is contained in:
Robert Schmidt
2022-12-12 23:40:39 +01:00
parent d64921a24f
commit 12384bbe25
12 changed files with 18 additions and 25 deletions
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doc/RUN_NR_PRS.md
+2 -2
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@@ -71,7 +71,7 @@ If **N310 USRPs** are used, then run above command `without -E option` i.e witho
To run using **rfsimulator**, execute following command:
```sudo RFSIMULATOR=server ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb0.sa.band78.fr1.106PRB.prs.usrpx310.conf --parallel-config PARALLEL_SINGLE_THREAD --noS1 --nokrnmod 1 --rfsim --phy-test --lowmem```
```sudo RFSIMULATOR=server ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb0.sa.band78.fr1.106PRB.prs.usrpx310.conf --parallel-config PARALLEL_SINGLE_THREAD --noS1 --nokrnmod 1 --rfsim --phy-test```
## FR2 test
In FR2 mode, we need RF beamforming module to transmit signal in mmWave frequency range. **X310 USRPs** can be used with BasicTx daughtercard to transmit baseband signal at **Intermediate Frequncy(IF)** and then RF beamforming module would perform beamforming and the upconversion to FR2 frequencies. IF can be specified using `if_freq` in the RU section of gNB config.
@@ -83,7 +83,7 @@ If RF beamforming module is NOT present, gNB can still be launched with USRP alo
To run using **rfsimulator**, execute following command:
```sudo RFSIMULATOR=server ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb0.sa.band261.fr2.64PRB.prs.usrpx310.conf --parallel-config PARALLEL_SINGLE_THREAD --noS1 --nokrnmod 1 --rfsim --phy-test --lowmem```
```sudo RFSIMULATOR=server ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb0.sa.band261.fr2.64PRB.prs.usrpx310.conf --parallel-config PARALLEL_SINGLE_THREAD --noS1 --nokrnmod 1 --rfsim --phy-test```
## Multiple gNB scenario
PRS is primarily used for positioning and localization of the UE with multiple gNBs transmitting simultaneously. OAI PRS implementation supports multiple gNB transmission provided all the gNBs are tightely synchronized using GPSDO clock. Therefore before running this scenario, make sure the USRPs has built-in GPSDO and the GPS antennas are connected with good satellite visibility. Also every time a gNB is launched, wait until `GPS LOCKED` is printed on the terminal during gNB startup. If USRP fails to lock with GPSDO, try again until its locked.