maki/openairinterface5g
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

RSRP computation at UE based on CSI-RS

Browse Source
This commit is contained in:
Roberto Louro Magueta
2022-07-26 12:45:30 +01:00
parent 6ba60eb181
commit 1f818b4178
2 changed files with 33 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
nfapi/open-nFAPI/nfapi/public_inc/fapi_nr_ue_interface.h
+2
View File
@@ -48,6 +48,8 @@ typedef struct {
} fapi_nr_uci_pdu_rel15_t;
typedef struct {
uint32_t rsrp;
int rsrp_dBm;
uint8_t rank_indicator;
uint8_t i1;
uint8_t i2;
openair1/PHY/NR_UE_TRANSPORT/csi_rx.c
+31 -4
View File
@@ -33,12 +33,15 @@
#include <stdlib.h>
#include <string.h>
#include "executables/nr-softmodem-common.h"
#include "nr_transport_proto_ue.h"
#include "PHY/phy_extern_nr_ue.h"
#include "common/utils/nr/nr_common.h"
#include "PHY/NR_TRANSPORT/nr_transport_proto.h"
#include "PHY/NR_UE_ESTIMATION/filt16a_32.h"
// 10*log10(pow(2,30))
#define pow_2_30_dB 90
//#define NR_CSIRS_DEBUG
//#define NR_CSIIM_DEBUG
@@ -185,10 +188,14 @@ int nr_get_csi_rs_signal(const PHY_VARS_NR_UE *ue,
const uint8_t *j_cdm,
const uint8_t *k_overline,
const uint8_t *l_overline,
int32_t csi_rs_received_signal[][ue->frame_parms.samples_per_slot_wCP]) {
int32_t csi_rs_received_signal[][ue->frame_parms.samples_per_slot_wCP],
uint32_t *rsrp,
int *rsrp_dBm) {
int32_t **rxdataF = ue->common_vars.common_vars_rx_data_per_thread[proc->thread_id].rxdataF;
const NR_DL_FRAME_PARMS *frame_parms = &ue->frame_parms;
uint16_t meas_count = 0;
uint32_t rsrp_sum = 0;
for (int ant_rx = 0; ant_rx < frame_parms->nb_antennas_rx; ant_rx++) {
@@ -216,6 +223,11 @@ int nr_get_csi_rs_signal(const PHY_VARS_NR_UE *ue,
rx_csi_rs_signal[k].r = rx_signal[k].r;
rx_csi_rs_signal[k].i = rx_signal[k].i;
rsrp_sum += (((int32_t)(rx_csi_rs_signal[k].r)*rx_csi_rs_signal[k].r) +
((int32_t)(rx_csi_rs_signal[k].i)*rx_csi_rs_signal[k].i));
meas_count++;
#ifdef NR_CSIRS_DEBUG
int dataF_offset = proc->nr_slot_rx*ue->frame_parms.samples_per_slot_wCP;
uint16_t port_tx = s+j_cdm[cdm_id]*CDM_group_size;
@@ -237,6 +249,15 @@ int nr_get_csi_rs_signal(const PHY_VARS_NR_UE *ue,
}
}
*rsrp = rsrp_sum/meas_count;
*rsrp_dBm = dB_fixed(*rsrp) + 30 - pow_2_30_dB
- ((int)openair0_cfg[0].rx_gain[0] - (int)openair0_cfg[0].rx_gain_offset[0]) - dB_fixed(ue->frame_parms.ofdm_symbol_size);
#ifdef NR_CSIRS_DEBUG
LOG_I(NR_PHY, "RSRP = %i (%i dBm)\n", *rsrp, *rsrp_dBm);
#endif
return 0;
}
@@ -839,6 +860,8 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
uint8_t l_overline[16];
int16_t log2_re = 0;
int16_t log2_maxh = 0;
uint32_t rsrp = 0;
int rsrp_dBm = 0;
uint32_t noise_power = 0;
uint8_t rank_indicator = 0;
uint32_t precoded_sinr_dB = 0;
@@ -875,7 +898,9 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
j_cdm,
k_overline,
l_overline,
csi_rs_received_signal);
csi_rs_received_signal,
&rsrp,
&rsrp_dBm);
nr_csi_rs_channel_estimation(ue,
proc,
@@ -919,11 +944,13 @@ int nr_ue_csi_rs_procedures(PHY_VARS_NR_UE *ue, UE_nr_rxtx_proc_t *proc, uint8_t
nr_csi_rs_cqi_estimation(precoded_sinr_dB, &cqi);
LOG_I(NR_PHY, "RI = %i, i1 = %i.%i.%i, i2 = %i, SINR = %i dB, CQI = %i\n",
rank_indicator+1, i1[0], i1[1], i1[2], i2[0], precoded_sinr_dB, cqi);
LOG_I(NR_PHY, "RSRP = %i dBm, RI = %i, i1 = %i.%i.%i, i2 = %i, SINR = %i dB, CQI = %i\n",
rsrp_dBm, rank_indicator+1, i1[0], i1[1], i1[2], i2[0], precoded_sinr_dB, cqi);
// Send CSI measurements to MAC
fapi_nr_csirs_measurements_t csirs_measurements;
csirs_measurements.rsrp = rsrp;
csirs_measurements.rsrp_dBm = rsrp_dBm;
csirs_measurements.rank_indicator = rank_indicator;
csirs_measurements.i1 = *i1;
csirs_measurements.i2 = *i2;