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Fixes and updates for taps client rewrite

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This commit is contained in:
Nima Chaharba
2026-05-06 17:18:35 +02:00
parent 040d8785ea
commit 052b774354
20 changed files with 363 additions and 17 deletions
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7
common/utils/T/T_messages.txt
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@@ -138,11 +138,16 @@ ID = GNB_PHY_UL_PAYLOAD_RX_BITS
ID = GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE
DESC = gNodeB channel estimation in the frequency domain
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,gNB_ID : int,rnti : int,frame : int,subframe : int,antenna : int,port : buffer,chest_f
FORMAT = int,gNB_ID : int,rnti : int,frame : int,zero : int,ant : int,p_ind : buffer,chest_f
ID = GNB_PHY_UL_TIME_CHANNEL_ESTIMATE
DESC = gNodeB channel estimation in the time domain
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,gNB_ID : int,rnti : int,frame : int,subframe : int,antenna : int,port : buffer,chest_t
ID = GNB_PHY_SRS_LS_CH_ESTIMATE
DESC = gNB SRS LS channel estimation (frequency domain)
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB
FORMAT = int,ant : int,port : int,symbol : buffer,srs_ch
ID = GNB_PHY_UL_SNR_ESTIMATE
DESC = gNodeB SNR estimation based on SRS
GROUP = ALL:PHY:GRAPHIC:HEAVY:GNB

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common/utils/T/tracer/frame_test.raw Normal file
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76
common/utils/T/tracer/live_srs.py Normal file
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@@ -0,0 +1,76 @@
# live_srs.py
import socket, struct, numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
HOST, PORT = '127.0.0.1', 2021
ofdm_size = 2048
target_id = 33 # GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE
fig, axes = plt.subplots(2, 2, figsize=(12, 8))
axes = axes.flatten()
lines = []
for i, ax in enumerate(axes):
line, = ax.plot([], [], 'b-', linewidth=0.8)
ax.set_xlim(0, ofdm_size)
ax.set_ylim(0, 600)
ax.set_title(f'RX Antenna {i} — SRS |H(f)|')
ax.set_xlabel('Subcarrier')
ax.set_ylabel('Magnitude')
ax.grid(True)
lines.append(line)
# Latest data per antenna
latest = {0: None, 1: None, 2: None, 3: None}
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((HOST, PORT))
sock.setblocking(False)
# Send activation message for our event
# T-tracer protocol: send "on EVENT_NAME\n"
sock.setblocking(True)
sock.send(b'on GNB_PHY_UL_FREQ_CHANNEL_ESTIMATE\n')
sock.setblocking(False)
buf = b''
def recv_events():
global buf
try:
buf += sock.recv(65536)
except BlockingIOError:
return
while len(buf) >= 20:
# [8B ts][4B id][4B gnb_id][4B rnti][4B frame][4B ant][4B port][4B buflen][data]
if len(buf) < 36:
break
ev_id = struct.unpack_from('<I', buf, 8)[0]
if ev_id != target_id:
buf = buf[1:] # shouldn't happen but safety
continue
rx_ant = struct.unpack_from('<i', buf, 24)[0]
buf_len = struct.unpack_from('<I', buf, 32)[0]
total = 36 + buf_len
if len(buf) < total:
break
if buf_len > 0 and rx_ant in latest:
raw = buf[36:36+buf_len]
s = np.frombuffer(raw, dtype=np.int16)
I = s[0::2].astype(float)
Q = s[1::2].astype(float)
latest[rx_ant] = np.sqrt(I**2 + Q**2)
buf = buf[total:]
def update(frame):
recv_events()
for ant, line in enumerate(lines):
if latest[ant] is not None:
line.set_data(np.arange(ofdm_size), latest[ant])
return lines
ani = animation.FuncAnimation(fig, update, interval=100, blit=True)
plt.suptitle('Live SRS Channel Estimates — 4 RU Antenna Positions')
plt.tight_layout()
plt.show()

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14
openair1/PHY/NR_ESTIMATION/nr_ul_channel_estimation.c
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@@ -805,6 +805,7 @@ int nr_srs_ls_channel_estimation(int ant,
srs_ls_estimated_channel[srs_symbol_offset + subcarrier + ktc] = ls_estimated;
}
#ifdef SRS_DEBUG
int subcarrier_log = subcarrier - subcarrier_offset;
if (subcarrier_log < 0) {
@@ -834,6 +835,16 @@ int nr_srs_ls_channel_estimation(int ant,
c16_t ch_estimates_time[ofdm_symbol_size] __attribute__((aligned(32)));
nr_est_delay(ofdm_symbol_size, srs_ls_estimated_channel, ch_estimates_time, delay);
}
#if T_TRACER
if (T_ACTIVE(T_GNB_PHY_SRS_LS_CH_ESTIMATE)) {
T(T_GNB_PHY_SRS_LS_CH_ESTIMATE,
T_INT(ant),
T_INT(p_index),
T_INT(srs_symb),
T_BUFFER(&srs_ls_estimated_channel[srs_symb * ofdm_symbol_size],
ofdm_symbol_size * sizeof(c16_t)));
}
#endif
} // for (int srs_symb = 0; srs_symb < N_symb_SRS; srs_symb++)
return 0;
@@ -1081,6 +1092,7 @@ int nr_srs_channel_interpolation(int ant,
LOG_W(NR_PHY, "Received SRS signal power is 0\n");
return -1;
}
return 0;
}

41
radio/vrtsim/vrtsim.c
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@@ -41,7 +41,7 @@
// Simulator role
typedef enum { ROLE_SERVER = 1, ROLE_CLIENT } role;
#define MAX_NUM_ANTENNAS_TX 4
#define MAX_NUM_ANTENNAS_TX 8
#define SAVED_SAMPLES_LEN 256
#define MAX_NUM_UES MAX_MOBILES_PER_GNB
@@ -397,11 +397,12 @@ static int vrtsim_connect(openair0_device_t *device)
if (vrtsim_state->role == ROLE_SERVER) {
parse_ue_config(vrtsim_state);
compute_ue_antenna_offsets(vrtsim_state);
int num_tx_streams = 0;
/////////////////////////// next line changed from = 0
int num_tx_streams = device->openair0_cfg[0].rx_num_channels;
int num_rx_streams = vrtsim_state->num_ues * device->openair0_cfg[0].rx_num_channels;
for (int i = 0; i < vrtsim_state->num_ues; i++) {
num_tx_streams += vrtsim_state->ue_conf[i].rx_ant;
}
//for (int i = 0; i < vrtsim_state->num_ues; i++) {
//num_tx_streams += vrtsim_state->ue_conf[i].rx_ant;
//}
vrtsim_state->channel =
shm_td_iq_channel_create(DEFAULT_CHANNEL_NAME, num_tx_streams, num_rx_streams);
LOG_A(HW, "vrtsim created a shm_td_iq_channel with config tx: %d rx: %d\n", num_tx_streams, num_rx_streams);
@@ -833,15 +834,27 @@ static int vrtsim_read(openair0_device_t *device, openair0_timestamp_t *ptimesta
}
} else {
/* Single-UE server UL read */
int ret = shm_td_iq_channel_rx(vrtsim_state->channel, vrtsim_state->last_received_sample, nsamps, 0, samplesVoid[0]);
if (ret == CHANNEL_ERROR_TOO_LATE) {
vrtsim_state->rx_samples_late += nsamps;
} else if (ret == CHANNEL_ERROR_TOO_EARLY) {
vrtsim_state->rx_early += 1;
}
for (int aarx = 1; aarx < nbAnt; aarx++) {
if (samplesVoid[aarx] != NULL)
memcpy(samplesVoid[aarx], samplesVoid[0], nsamps * sizeof(sample_t));
//int ret = shm_td_iq_channel_rx(vrtsim_state->channel, vrtsim_state->last_received_sample, nsamps, 0, samplesVoid[0]);
//if (ret == CHANNEL_ERROR_TOO_LATE) {
//vrtsim_state->rx_samples_late += nsamps;
//} else if (ret == CHANNEL_ERROR_TOO_EARLY) {
//vrtsim_state->rx_early += 1;
//}
//for (int aarx = 1; aarx < nbAnt; aarx++) {
// if (samplesVoid[aarx] != NULL)
// memcpy(samplesVoid[aarx], samplesVoid[0], nsamps * sizeof(sample_t));
//}
/////added by nima
for (int aarx = 0; aarx < nbAnt; aarx++) {
int ret = shm_td_iq_channel_rx(vrtsim_state->channel,
vrtsim_state->last_received_sample,
nsamps,
aarx, // stream per antenna, not always 0
samplesVoid[aarx]);
if (ret == CHANNEL_ERROR_TOO_LATE)
vrtsim_state->rx_samples_late += nsamps;
else if (ret == CHANNEL_ERROR_TOO_EARLY)
vrtsim_state->rx_early += 1;
}
}
} else {

14
taps.fbs Normal file
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@@ -0,0 +1,14 @@
// This file defines the structure of the Taps table used in the PHY layer.
namespace Phy;
// Taps form the discrete complex baseband-equivalent channel impulse response and can be used
// to model the channel characteristics in link layer simulations.
table Taps {
id:uint;
num_tx_antennas:uint;
num_rx_antennas:uint;
taps_len:uint;
taps:[float];
}
root_type Taps;

219
targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb2101.conf Normal file
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@@ -0,0 +1,219 @@
Active_gNBs = ( "gNB-OAI");
# Asn1_verbosity, choice in: none, info, annoying
Asn1_verbosity = "none";
gNBs =
(
{
////////// Identification parameters:
gNB_ID = 0xe00;
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 = 12345678L;
////////// Physical parameters:
pdsch_AntennaPorts_XP = 2;
pdsch_AntennaPorts_N1 = 2;
pdsch_AntennaPorts_N2 = 2;
pusch_AntennaPorts = 8;
maxMIMO_layers = 1;
do_CSIRS = 0;
do_SRS = 1;
#uess_agg_levels = [0,1,2,2,1]
servingCellConfigCommon = (
{
#spCellConfigCommon
physCellId = 0;
# downlinkConfigCommon
#frequencyInfoDL
# this is 3600 MHz + 43 PRBs@30kHz SCS (same as initial BWP)
absoluteFrequencySSB = 641280;
dl_frequencyBand = 78;
# this is 3600 MHz
dl_absoluteFrequencyPointA = 640008;
#scs-SpecificCarrierList
dl_offstToCarrier = 0;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
dl_subcarrierSpacing = 1;
dl_carrierBandwidth = 106;
#initialDownlinkBWP
#genericParameters
# this is RBstart=27,L=48 (275*(L-1))+RBstart
initialDLBWPlocationAndBandwidth = 28875; # 6366 12925 12956 28875 12952
# 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 = 20;
#initialUplinkBWP
#genericParameters
initialULBWPlocationAndBandwidth = 28875;
# subcarrierSpacing
# 0=kHz15, 1=kHz30, 2=kHz60, 3=kHz120
initialULBWPsubcarrierSpacing = 1;
#rach-ConfigCommon
#rach-ConfigGeneric
prach_ConfigurationIndex = 98;
#prach_msg1_FDM
#0 = one, 1=two, 2=four, 3=eight
prach_msg1_FDM = 0;
prach_msg1_FrequencyStart = 0;
zeroCorrelationZoneConfig = 13;
preambleReceivedTargetPower = -96;
#preamblTransMax (0...10) = (3,4,5,6,7,8,10,20,50,100,200)
preambleTransMax = 6;
#powerRampingStep
# 0=dB0,1=dB2,2=dB4,3=dB6
powerRampingStep = 1;
#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 = 14;
#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,
msg3_DeltaPreamble = 1;
p0_NominalWithGrant =-90;
# pucch-ConfigCommon setup :
# pucchGroupHopping
# 0 = neither, 1= group hopping, 2=sequence hopping
pucchGroupHopping = 0;
hoppingId = 40;
p0_nominal = -90;
ssb_PositionsInBurst_Bitmap = 1;
# 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 = 6;
nrofDownlinkSlots = 7;
nrofDownlinkSymbols = 6;
nrofUplinkSlots = 2;
nrofUplinkSymbols = 4;
ssPBCH_BlockPower = -25;
}
);
# ------- SCTP definitions
SCTP :
{
# Number of streams to use in input/output
SCTP_INSTREAMS = 2;
SCTP_OUTSTREAMS = 2;
};
////////// AMF parameters:
amf_ip_address = ({ ipv4 = "172.21.6.4"; });
NETWORK_INTERFACES :
{
GNB_IPV4_ADDRESS_FOR_NG_AMF = "172.21.16.117/24";
GNB_IPV4_ADDRESS_FOR_NGU = "172.21.16.117/24";
GNB_PORT_FOR_S1U = 2152; # Spec 2152
};
}
);
MACRLCs = (
{
num_cc = 1;
tr_s_preference = "local_L1";
tr_n_preference = "local_RRC";
pusch_TargetSNRx10 = 150;
pucch_TargetSNRx10 = 200;
}
);
L1s = (
{
num_cc = 1;
tr_n_preference = "local_mac";
prach_dtx_threshold = 120;
pucch0_dtx_threshold = 100;
ofdm_offset_divisor = 8; #set this to UINT_MAX for offset 0
}
);
RUs = (
{
local_rf = "yes"
nb_tx = 8;
nb_rx = 8;
att_tx = 12;
att_rx = 12;
bands = [78];
max_pdschReferenceSignalPower = -27;
max_rxgain = 114;
eNB_instances = [0];
clock_src = "internal";
}
);
rfsimulator :
{
serveraddr = "server";
serverport = 4043;
options = (); #("saviq"); or/and "chanmod"
modelname = "AWGN";
IQfile = "/tmp/rfsimulator.iqs";
};
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 = "yes";
drb_integrity = "no";
};
log_config :
{
global_log_level ="info";
hw_log_level ="info";
phy_log_level ="info";
mac_log_level ="info";
rlc_log_level ="info";
pdcp_log_level ="info";
rrc_log_level ="info";
ngap_log_level ="debug";
f1ap_log_level ="debug";
};
e2_agent = {
near_ric_ip_addr = "127.0.0.1";
#sm_dir = "/path/where/the/SMs/are/located/"
sm_dir = "/usr/local/lib/flexric/"
};

2
targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.conf
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@@ -1,7 +1,7 @@
# SPDX-License-Identifier: LicenseRef-CSSL-1.0
uicc0 = {
imsi = "2089900007487";
imsi = "001010000000001";
key = "fec86ba6eb707ed08905757b1bb44b8f";
opc= "C42449363BBAD02B66D16BC975D77CC1";
pdu_sessions = ({ dnn = "oai"; nssai_sst = 1; });

7
targets/PROJECTS/GENERIC-NR-5GC/CONF/ue.os-core.conf Normal file
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@@ -0,0 +1,7 @@
uicc0 = {
imsi = "001010000000001";
key= "8BAF473F2F8FD09487CCCBD7097C6862";
opc= "8e27b6af0e692e750f32667a3b14605d";
dnn= "internet";
nssai_sst=1;
}