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Update SA documentation in RUNMODEM.md

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luis_pereira87
2021-06-06 13:19:33 +01:00
parent e72a6798c1
commit e8655d680a
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doc/RUNMODEM.md
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@@ -134,22 +134,24 @@ With the RF simulator (on the same machine):
## SA setup with OAI ## SA setup with OAI
The sa flag is used to run gNB in standalone mode. Currently OAI in NR standalone mode transmits and receives SIB1 and triggers the RA procedure for initial access. The sa flag is used to run gNB in standalone mode.
In order to run gNB in standalone mode, the following flag is needed at gNB: In order to run gNB and UE in standalone mode, the following flag is needed:
`--sa` `--sa`
### Run OAI in sa mode At the gNB the --sa flag does the following:
- The RRC encodes SIB1 according to the configuration file and transmits it through NR-BCCH-DL-SCH.
At the gNB the --sa flag does the following
- it reads the RRC configuration from the configuration file
- it encodes the RRCConfiguration and the RBconfig message and stores them in the binary files rbconfig.raw and reconfig.raw
- the RRC encodes SIB1 according the configuration file and transmits it through PDSCH
At the UE the --sa flag will: At the UE the --sa flag will:
- Read the binary files rbconfig.raw and reconfig.raw from the current directory (a different directory can be specified with the flag --rrc_config_path) and process them - Decode SIB1 and starts the 5G NR Initial Access Procedure for SA:
- After the successful decoding of a SIB1 at RRC, the UE will start the 5G NR Initial Access Procedure by triggering the RA procedure. 1) 5G-NR RRC Connection Setup
2) NAS Authentication and Security
3) 5G-NR AS Security Procedure
4) 5G-NR RRC Reconfiguration
5) Start Downlink and Uplink Data Transfer
### Run OAI in SA mode
From the `cmake_targets/ran_build/build` folder: From the `cmake_targets/ran_build/build` folder:
@@ -159,13 +161,13 @@ gNB on machine 1:
UE on machine 2: UE on machine 2:
`sudo ./nr-uesoftmodem --rrc_config_path . --sa` `sudo ./nr-uesoftmodem -r 106 --numerology 1 --band 78 -C 3619200000 --sa`
With the RF simulator (on the same machine): With the RF simulator (on the same machine):
`sudo ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf --rfsim --sa` `sudo ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf --rfsim --sa`
`sudo ./nr-uesoftmodem --rrc_config_path . --rfsim --sa` `sudo ./nr-uesoftmodem -r 106 --numerology 1 --band 78 -C 3619200000 --rfsim --sa`
## IF setup with OAI ## IF setup with OAI