#General This is a RF simulator that allows to test OAI without a RF board. It replaces a actual RF board driver.
As much as possible, it works like a RF board, but not in realtime: it can run faster than realtime if there is enough CPU or slower (it is CPU bound instead of real time RF sampling bound)
#build You can build it the same way, and together with actual RF driver
Example:
./build_oai --ue-nas-use-tun --UE --eNB -w SIMU
It is also possible to build actual RF and use choose on each run:
./build_oai --ue-nas-use-tun --UE --eNB -w USRP --rfsimulator
Will build both the eNB (lte-softmodem) and the UE (lte-uesoftmodem) We recommend to use the option --ue-nas-use-tun that is much simpler to use than the OAI kernel driver.
#usage Setting the env variable RFSIMULATOR enables the RF board simulator It should the set to "enb" in the eNB
For the UE, it should be set to the IP address of the eNB example:
sudo RFSIMULATOR=192.168.2.200 ./lte-uesoftmodem -C 2685000000 -r 50
Except this, the UE and the eNB can be used as it the RF is real
If you reach 'RA not active' on UE, be careful to generate a valid SIM
$OPENAIR_DIR/targets/bin/conf2uedata -c $OPENAIR_DIR/openair3/NAS/TOOLS/ue_eurecom_test_sfr.conf -o .
#Caveacts Still issues in power control: txgain, rxgain are not used
no S1 mode is currently broken, so we were not able to test the simulator in noS1 mode