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protoru: add docs and sample config

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This commit is contained in:
Xin Zhe Khooi
2026-02-02 15:01:44 +00:00
parent 003d72c859
commit 0388bf0e67
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doc/ORAN_FHI7.2_Tutorial.md
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@@ -719,7 +719,37 @@ RU must be rebooted so the changes apply.
- The measured throughput was **520 Mbps DL** and **40 Mbps UL**. - The measured throughput was **520 Mbps DL** and **40 Mbps UL**.
- With newer OAI versions, throughput degrades. This issue is currently under investigation. - With newer OAI versions, throughput degrades. This issue is currently under investigation.
### Configure Network Interfaces and DPDK VFs ### ProtO-RU
[ProtO-RU](https://github.com/NUS-CIR/ProtO-RU) is a software implementation of an O-RAN 7.2 RU using a NI USRP.
Different from other COTS RUs, ProtO-RU requires a larger DU delay profile which is larger than the TTI interval.
The OAI configuration file [`gnb.sa.band78.106prb.fhi72.1x1-proto-ru.conf`](../targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.106prb.fhi72.1x1-proto-ru.conf) corresponds to:
- TDD pattern `DDDSU`, 2.5ms
- Bandwidth 40MHz
- MTU 9216
- 1T1R
#### RU configuration
First, compile the RU as outlined in the [building ProtO-RU tutorial](https://github.com/NUS-CIR/ProtO-RU/tree/proto-ru?tab=readme-ov-file#building-proto-ru).
Then, ensure that both your DU and ProtO-RU host are PTP synchronized.
Next, use the RU config, [protoru-OAI-B210-TDD-n78-40MHz-1x1-30kHz.yml](https://github.com/NUS-CIR/ProtO-RU/blob/proto-ru/proto-ru/conf-files/protoru-OAI-B210-TDD-n78-40MHz-1x1-30kHz.yml), which corresponds to the above mentioned DU config file.
In addition, please adapt the DU MAC address and VLAN tag to your needs.
ProtO-RU was successfully tested with USRP B210.
If you are using a different SDR (e.g., N310), you will need to update the ProtO-RU and the DU configurations accordingly.
Launch ProtO-RU with the adapted configuration file with the command:
```bash
sudo ./ru_emulator -c <path-to/protoru-OAI-B210-TDD-n78-40MHz-1x1-30kHz.yml>
```
Finally, start the OAI gNB.
## Configure Network Interfaces and DPDK VFs
The 7.2 fronthaul uses the xran library, which requires DPDK. In this step, we The 7.2 fronthaul uses the xran library, which requires DPDK. In this step, we
need to configure network interfaces to send data to the RU, and configure DPDK need to configure network interfaces to send data to the RU, and configure DPDK
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.106prb.fhi72.1x1-proto-ru.conf
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Active_gNBs = ( "gNB-OAI");
# Asn1_verbosity, choice in: none, info, annoying
Asn1_verbosity = "none";
gNBs =
(
{
////////// Identification parameters:
gNB_ID = 0xe01;
gNB_name = "gNB-OAI";
// Tracking area code, 0x0000 and 0xfffe are reserved values
tracking_area_code = 1;
plmn_list = ({ mcc = 001; mnc = 01; mnc_length = 2; snssaiList = ( { sst = 1; }); });
nr_cellid = 1;
# min_rxtxtime = 4;
////////// Physical parameters:
pdsch_AntennaPorts_XP = 1;
pusch_AntennaPorts = 1;
do_CSIRS = 0;
do_SRS = 0;
sib1_tda = 15;
force_256qam_off = 0;
force_UL256qam_off = 0;
servingCellConfigCommon = (
{
#spCellConfigCommon
physCellId = 0;
#n_TimingAdvanceOffset = 1;
# downlinkConfigCommon
#frequencyInfoDL
# center frequency = 3420.48MHz
# selected SSB frequency = 3349.92 MHz
absoluteFrequencySSB = 627456;
dl_frequencyBand = 78;
# frequency point A = 3401.40 MHz
dl_absoluteFrequencyPointA = 626760;
#scs-SpecificCarrierList
dl_offstToCarrier = 0;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
dl_subcarrierSpacing = 1;
dl_carrierBandwidth = 106;
#initialDownlinkBWP
#genericParameters
initialDLBWPlocationAndBandwidth = 28875; #38.101-1 Table 5.3.2-1
#
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
initialDLBWPsubcarrierSpacing = 1;
#pdcch-ConfigCommon
initialDLBWPcontrolResourceSetZero = 12;
initialDLBWPsearchSpaceZero = 0;
#uplinkConfigCommon
#frequencyInfoUL
ul_frequencyBand = 78;
#scs-SpecificCarrierList
ul_offstToCarrier = 0;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
ul_subcarrierSpacing = 1;
ul_carrierBandwidth = 106;
pMax = 23;
#initialUplinkBWP
#genericParameters
initialULBWPlocationAndBandwidth = 28875;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
initialULBWPsubcarrierSpacing = 1;
#rach-ConfigCommon
#rach-ConfigGeneric
prach_ConfigurationIndex = 159;
#prach_msg1_FDM
#0 = one, 1=two, 2=four, 3=eight
prach_msg1_FDM = 0;
prach_msg1_FrequencyStart = 0;
zeroCorrelationZoneConfig = 0;
preambleReceivedTargetPower = -96;
#preamblTransMax (0...10) = (3,4,5,6,7,8,10,20,50,100,200)
preambleTransMax = 7;
#powerRampingStep
# 0=dB0,1=dB2,2=dB4,3=dB6
powerRampingStep = 3;
#ra_ReponseWindow
#1,2,4,8,10,20,40,80
ra_ResponseWindow = 5;
#ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR
#1=oneeighth,2=onefourth,3=half,4=one,5=two,6=four,7=eight,8=sixteen
ssb_perRACH_OccasionAndCB_PreamblesPerSSB_PR = 4;
#one (0..15) 4,8,12,16,...60,64
ssb_perRACH_OccasionAndCB_PreamblesPerSSB = 15;
#ra_ContentionResolutionTimer
#(0..7) 8,16,24,32,40,48,56,64
ra_ContentionResolutionTimer = 7;
rsrp_ThresholdSSB = 19;
#prach-RootSequenceIndex_PR
#1 = 839, 2 = 139
prach_RootSequenceIndex_PR = 2;
prach_RootSequenceIndex = 1;
# SCS for msg1, can only be 15 for 30 kHz < 6 GHz, takes precendence over the one derived from prach-ConfigIndex
#
msg1_SubcarrierSpacing = 1;
# restrictedSetConfig
# 0=unrestricted, 1=restricted type A, 2=restricted type B
restrictedSetConfig = 0;
# this is the offset between the last PRACH preamble power and the Msg3 PUSCH, 2 times the field value in dB
msg3_DeltaPreamble = 4;
p0_NominalWithGrant = -24;
# pucch-ConfigCommon setup :
# pucchGroupHopping
# 0 = neither, 1= group hopping, 2=sequence hopping
pucchGroupHopping = 0;
hoppingId = 0;
p0_nominal = -24;
ssb_PositionsInBurst_Bitmap = 0x1;
# ssb_periodicityServingCell
# 0 = ms5, 1=ms10, 2=ms20, 3=ms40, 4=ms80, 5=ms160, 6=spare2, 7=spare1
ssb_periodicityServingCell = 2;
# dmrs_TypeA_position
# 0 = pos2, 1 = pos3
dmrs_TypeA_Position = 0;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
subcarrierSpacing = 1;
#tdd-UL-DL-ConfigurationCommon
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
referenceSubcarrierSpacing = 1;
# pattern1
# dl_UL_TransmissionPeriodicity
# 0=ms0p5, 1=ms0p625, 2=ms1, 3=ms1p25, 4=ms2, 5=ms2p5, 6=ms5, 7=ms10
dl_UL_TransmissionPeriodicity = 5;
nrofDownlinkSlots = 3;
nrofDownlinkSymbols = 10;
nrofUplinkSlots = 1;
nrofUplinkSymbols = 2;
ssPBCH_BlockPower = 20;
}
);
# ------- SCTP definitions
SCTP :
{
# Number of streams to use in input/output
SCTP_INSTREAMS = 2;
SCTP_OUTSTREAMS = 2;
};
////////// AMF parameters:
amf_ip_address = ({ ipv4 = "172.22.0.10"; });
NETWORK_INTERFACES :
{
GNB_IPV4_ADDRESS_FOR_NG_AMF = "172.26.190.95";
GNB_IPV4_ADDRESS_FOR_NGU = "172.26.190.95";
GNB_PORT_FOR_S1U = 2152; # Spec 2152
};
}
);
MACRLCs = (
{
num_cc = 1;
tr_s_preference = "local_L1";
tr_n_preference = "local_RRC";
pusch_TargetSNRx10 = 250;
pucch_TargetSNRx10 = 200;
#dl_bler_target_upper = .35;
#dl_bler_target_lower = .15;
#ul_bler_target_upper = .35;
#ul_bler_target_lower = .15;
pusch_FailureThres = 1000;
}
);
L1s = (
{
num_cc = 1;
tr_n_preference = "local_mac";
prach_dtx_threshold = 200;
pucch0_dtx_threshold = 100;
pusch_dtx_threshold = 10;
max_ldpc_iterations = 15;
tx_amp_backoff_dB = 9; # needs to match O-RU configuration
L1_rx_thread_core = 8;
L1_tx_thread_core = 10;
phase_compensation = 0; # needs to match O-RU configuration
}
);
RUs = (
{
local_rf = "no";
nb_tx = 1;
nb_rx = 1;
att_tx = 0;
att_rx = 0;
bands = [78];
max_pdschReferenceSignalPower = -27;
max_rxgain = 75;
sf_extension = 0;
eNB_instances = [0];
ru_thread_core = 9;
sl_ahead = 10;
tr_preference = "raw_if4p5"; # important: activate FHI7.2
do_precoding = 0; # needs to match O-RU configuration
}
);
security = {
# preferred ciphering algorithms
# the first one of the list that an UE supports in chosen
# valid values: nea0, nea1, nea2, nea3
ciphering_algorithms = ( "nea0" );
# preferred integrity algorithms
# the first one of the list that an UE supports in chosen
# valid values: nia0, nia1, nia2, nia3
integrity_algorithms = ( "nia2", "nia0" );
# setting 'drb_ciphering' to "no" disables ciphering for DRBs, no matter
# what 'ciphering_algorithms' configures; same thing for 'drb_integrity'
drb_ciphering = "no";
drb_integrity = "no";
};
log_config :
{
global_log_level = "info";
hw_log_level = "info";
phy_log_level = "info";
mac_log_level = "info";
nr_mac_log_level = "info";
rlc_log_level = "info";
pdcp_log_level = "info";
rrc_log_level = "info";
ngap_log_level = "info";
f1ap_log_level = "info";
};
fhi_72 = {
dpdk_devices = ("0000:70:11.0"); # one VF can be used as well
system_core = 0;
io_core = 1;
worker_cores = (2);
ru_addr = ("50:7c:6f:45:f3:04");
mtu = 9600;
fh_config = ({
T1a_cp_dl = (2450, 2635);
T1a_cp_ul = (2450, 2635);
T1a_up = (2350, 2550);
Ta4 = (1500, 1990);
ru_config = {
iq_width = 9;
iq_width_prach = 9;
};
prach_config = {
eAxC_offset = 4;
};
});
};