接入网（gNB）nr-softmodem
下载源码：
git clone https://gitlab.eurecom.fr/oai/openairinterface5g.git
编译gNB:
oai5g提供了方便的编译工具(build_oai)，指定参数即可编译需要的部分、例如gNG、UE等
- 进入文件夹：cd /openairinterface5g
- 切换至develop分支以支持5G： git checkout develop
- source oaienv
- cd cmake_targets
- ./build_oai -w BLADERF –gNB
网络转发
sudo ip route add 192.168.70.128/26 via <核心网ip> dev eno1;
运行
无核心网测试：sudo ./nr-softmodem -O ./PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf –noS1 –nokrnmod 1
独立组网：sudo ./nr-softmodem -O gnb.sa.band41.fr1.106PRB.usrpb210.conf -E –sa
出现错误
➜ oai5g sudo ./nr-softmodem –help
CMDLINE: “./nr-softmodem” “–help”
[CONFIG] get parameters from cmdline , debug flags: 0x00400000
[CONFIG] log_config: 2/3 parameters successfully set
[CONFIG] log_config: 55/55 parameters successfully set
[CONFIG] log_config: 55/55 parameters successfully set
[CONFIG] log_config: 16/16 parameters successfully set
[CONFIG] log_config: 16/16 parameters successfully set
log init done
[HW] # /dev/cpu_dma_latency set to 2 us
Reading in command-line options
[CONFIG] (root): 32/36 parameters successfully set
—–Help for section (root section) : 036 entries——
–rf-config-file: Configuration file for front-end (e.g. LMS7002M)
–split73: Split 7.3 (below rate matching) option: <cu|du>:
default no pool (runs in calling thread),
list of cores, comma separated (negative value is no core affinity)
example: -1,3 launches two working threads one floating, the second set on core 3 –phy-test: test UE phy layer, mac disabled
–do-ra: test gNB and UE with RA procedures
–sa: run gNB in standalone mode
–usim-test: use XOR autentication algo in case of test usim mode
–clock-source: tells hardware to use a clock reference (0:internal, 1:external, 2:gpsdo)
–time-source: tells hardware to use a time reference (0:internal, 1:external, 2:gpsdo)
–tune-offset: LO tuning offset to use in Hz
–wait-for-sync: Help string not specified
–single-thread-enable: Disables single-thread mode in lte-softmodem
-C: Set the downlink frequency for all component carriers
–CO: Set the uplink frequency offset for all component carriers
-a: Channel id offset
-d: Enable soft scope and L1 and L2 stats (Xforms)
-q: Enable processing timing measurement of lte softmodem on per subframe basis
–numerology: adding numerology for 5G
–band: band index
–emulate-rf: Emulated RF enabled(disable by defult)
–parallel-config: three config for level of parallelism ‘PARALLEL_SINGLE_THREAD’, ‘PARALLEL_RU_L1_SPLIT’, or ‘PARALLEL_RU_L1_TRX_SPLIT’
–worker-config: two option for worker ‘WORKER_DISABLE’ or ‘WORKER_ENABLE’
–noS1: Disable s1 interface
–rfsim: Run in rf simulator mode
–nokrnmod: (noS1 only): Use tun instead of namesh module
–nbiot-disable: disable nb-iot, even if defined in config
–chest-freq: Set channel estimation type in frequency domain. 0-Linear interpolation (default). 1-PRB based averaging of channel estimates in frequency.
–chest-time: Set channel estimation type in time domain. 0-Symbols take estimates of the last preceding DMRS symbol (default). 1-Symbol based averaging of channel estimates in time.
–nsa: Enable NSA mode
–node-number: Help string not specified
–usrp-tx-thread-config: having extra thead for usrp tx
–nfapi: Change the nFAPI mode for NR
–non-stop: Go back to frame sync mode after 100 consecutive PBCH failures
–emulate-l1: Run in L1 emulated mode (disable PHY layer)
–continuous-tx: perform continuous transmission, even in TDD mode (to work around USRP issues)
–disable-stats: disable globally the stats generation and persistence——————————————————————–
[CONFIG] (root): 4/5 parameters successfully set
—–Help for section (root section) : 005 entries——
-R: Enable online log
-g: Set the global log level, valid options: (4:trace, 3:debug, 2:info, 1:warn, (0:error))
–telnetsrv: Start embedded telnet server
–log-mem: Help string not specified
–telnetclt: Help string not specified
-——————————————————————-
[ENB_APP] nfapi running mode: MONOLITHIC
—–Help for section (root section) : 014 entries——
–single-thread-disable: Disables single-thread mode in lte-softmodem
-A: Set timing_advance
-E: Apply three-quarter of sampling frequency, 23.04 Msps to reduce the data rate on USB/PCIe transfers (only valid for 20 MHz)
-m: Set the downlink MCS for PHYTEST mode
-l: Set the downlink nrOfLayers for PHYTEST mode
-L: Set the uplink nrOfLayers for PHYTEST mode
-t: Set the uplink MCS for PHYTEST mode
-M: Set the number of PRBs used for DLSCH in PHYTEST mode
-T: Set the number of PRBs used for ULSCH in PHYTEST mode
-D: Bitmap for DLSCH slots (slot 0 starts at LSB)
-U: Bitmap for ULSCH slots (slot 0 starts at LSB)
–usrp-tx-thread-config: having extra thead for usrp tx
–uecap_file: path for UE Capabilities file
-s: Set average SNR in dB (for –siml1 option)
-——————————————————————-
[GNB_APP] Getting GNBSParams
[CONFIG] (root): 1/2 parameters successfully set
—–Help for section (root section) : 002 entries——
–Asn1_verbosity: Help string not specified
–Active_gNBs: Help string not specified
-——————————————————————-
/home/skygo/workspace/openairinterface5g/common/config/config_cmdline.c:226 config_process_cmdline() Exiting OAI softmodem: [CONFIG] Exiting after displaying help
写卡测试
