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openairinterface5g/openair2/LAYER2/NR_MAC_UE/nr_ue_power_procedures.c
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Bartosz Podrygajlo 48d68f7d90 Fix a bug where if BWP size is not exactly maximum BWP size for a bandwidth power control code asserts. 
This assert and assumption is incorrect, according to 38.101-1 UE channel is defined only by the BWP size
and BWP size can be any value supported by the RRC parameters defining the BWP.
To determine the UE channel the smallest bandwidth supporting the BWP is selected. This is an assumption based
on references in the same document to UE channel bandwidth being equal to one of the values in set
 {5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 90, 100}.
Also:
 - calculated P_CMIN during BWP setup since the parameter doesn't depend on DCI.
 - initiialize uniqCfg structure in test_nr_ue_power_procedures main function which enables LOG prints during tests
2024-07-26 11:15:49 +02:00

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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/*! \file ra_procedures.c
* \brief Routines for UE MAC-layer power control procedures
* \author Francesco Mani
* \date 2023
* \version 0.1
* \email: email@francescomani.it
* \note
* \warning
*/
#include "LAYER2/NR_MAC_UE/mac_proto.h"
#define DEFAULT_P0_NOMINAL_PUCCH_0_DBM 0
#define DEFAULT_DELTA_F_PUCCH_0_DB 0
// TODO: This should be part of mac instance
/* TS 38.213 9.2.5.2 UE procedure for multiplexing HARQ-ACK/SR and CSI in a PUCCH */
/* this is a counter of number of pucch format 4 per subframe */
static int nb_pucch_format_4_in_subframes[LTE_NUMBER_OF_SUBFRAMES_PER_FRAME] = {0};
/* TS 38.211 Table 6.4.1.3.3.2-1: DM-RS positions for PUCCH format 3 and 4 */
static const int nb_symbols_excluding_dmrs[11][2][2]
= {
/* No additional DMRS Additional DMRS */
/* PUCCH length No hopping hopping No hopping hopping */
/* index 0 1 0 1 */
/* 4 */ {{ 3 , 2 } , { 3 , 2 }},
/* 5 */ {{ 3 , 3 } , { 3 , 3 }},
/* 6 */ {{ 4 , 4 } , { 4 , 4 }},
/* 7 */ {{ 5 , 5 } , { 5 , 5 }},
/* 8 */ {{ 6 , 6 } , { 6 , 6 }},
/* 9 */ {{ 7 , 7 } , { 7 , 7 }},
/* 10 */ {{ 8 , 8 } , { 6 , 6 }},
/* 11 */ {{ 9 , 9 } , { 7 , 7 }},
/* 12 */ {{ 10 , 10 } , { 8 , 8 }},
/* 13 */ {{ 11 , 11 } , { 9 , 9 }},
/* 14 */ {{ 12 , 12 } , { 10 , 10 }},
};
static int get_deltatf(uint16_t nb_of_prbs,
uint8_t N_symb_PUCCH,
uint8_t freq_hop_flag,
uint8_t add_dmrs_flag,
int N_sc_ctrl_RB,
int O_UCI);
// ∆MPR according to Table 6.2.2-3 38.101-1
static float get_delta_mpr(uint16_t nr_band, frame_type_t frame_type, int scs, int channel_bandwidth, int n_prbs, int start_prb, int power_class)
{
if (compare_relative_ul_channel_bw(nr_band, scs, channel_bandwidth, frame_type)) {
if (power_class == 3) {
if ((nr_band == 28 || nr_band == 83) && channel_bandwidth == 30) {
return 0.5f;
}
}
if (power_class == 3 || power_class == 2) {
if ((nr_band == 40 || nr_band == 97) && channel_bandwidth == 100) {
return 1.0f;
}
}
}
return 0;
}
// MPR according to 38-101 6.2.2
static float get_mpr(int Qm, int N_RB_UL, bool is_transform_precoding, int n_prbs, int start_prb, int power_class)
{
float MPR = 0;
int rb_low = (n_prbs / 2) > 1 ? (n_prbs / 2) : 1;
int rb_high = N_RB_UL - rb_low - n_prbs;
bool is_inner_rb = start_prb >= rb_low && start_prb <= rb_high && n_prbs <= ((N_RB_UL / 2) + (N_RB_UL & 1));
switch (power_class) {
case 3:
// Table 6.2.2-1 in 38.101
switch (Qm) {
case 1:
AssertFatal(false, "MPR for Pi/2 BPSK not implemented yet\n");
break;
case 2:
if (is_transform_precoding) {
if (!is_inner_rb)
MPR = 1;
} else {
if (is_inner_rb)
MPR = 1.5;
else
MPR = 3;
}
break;
case 4:
if (is_transform_precoding) {
if (is_inner_rb)
MPR = 1;
else
MPR = 2;
} else {
if (is_inner_rb)
MPR = 2;
else
MPR = 3;
}
break;
case 6:
if (is_transform_precoding)
MPR = 2.5;
else
MPR = 3.5;
break;
case 8:
if (is_transform_precoding)
MPR = 4.5;
else
MPR = 6.5;
break;
break;
default:
AssertFatal(false, "Invalid Qm %d\n", Qm);
}
break;
default:
AssertFatal(false, "PowerClass != 3 not implemented\n");
}
return MPR;
}
// Implementation of 6.2.4 Configured ransmitted power
// 3GPP TS 38.101-1 version 16.5.0 Release 16
// -
// The UE is allowed to set its configured maximum output power PCMAX,f,c for carrier f of serving cell c in each slot.
// The configured maximum output power PCMAX,f,c is set within the following bounds: PCMAX_L,f,c <= PCMAX,f,c <= PCMAX_H,f,c
// -
// Measurement units:
// - p_max: dBm
// - delta_TC_c: dB
// - P_powerclass: dBm
// - delta_P_powerclass: dB
// - MPR_c: dB
// - delta_MPR_c: dB
// - delta_T_IB_c dB
// - delta_rx_SRS dB
// note:
// - Assuming:
// -- Powerclass 3 capable UE (which is default power class unless otherwise stated)
// -- Maximum power reduction (MPR_c) for power class 3
// -- no additional MPR (A_MPR_c)
float nr_get_Pcmax(int p_Max,
uint16_t nr_band,
frame_type_t frame_type,
frequency_range_t frequency_range,
int channel_bandwidth,
int Qm,
bool powerBoostPi2BPSK,
int scs,
int N_RB_UL,
bool is_transform_precoding,
int n_prbs,
int start_prb)
{
const int power_class = 3; // Assume power class 3
if (frequency_range == FR1) {
// TODO configure P-MAX from the upper layers according to 38.331
int p_powerclass = 23; // dBm assuming poweclass 3 UE
int p_emax = p_Max != INT_MIN ? p_Max : p_powerclass;
int delta_P_powerclass = 0; // for powerclass 2 needs to be changed
if (p_Max && Qm == 1 && powerBoostPi2BPSK
&& (nr_band == 40 || nr_band == 41 || nr_band == 77 || nr_band == 78 || nr_band == 79)) {
p_emax += 3;
delta_P_powerclass -= 3;
}
// TODO to be set for CA and DC
int delta_T_IB = 0;
// TODO in case of band 41 and PRB allocation within 4MHz of the upper or lower limit of the band -> delta_TC = 1.5
if (nr_band == 41)
LOG_E(NR_MAC, "Need to implement delta_TC for band 41\n");
int delta_TC = 0;
float MPR = get_mpr(Qm, N_RB_UL, is_transform_precoding, n_prbs, start_prb, power_class);
float delta_MPR = get_delta_mpr(nr_band, frame_type, scs, channel_bandwidth, n_prbs, start_prb, power_class);
int A_MPR = 0; // TODO too complicated to implement for now (see 6.2.3 in 38.101-1)
int delta_rx_SRS = 0; // TODO for SRS
int P_MPR = 0; // to ensure compliance with applicable electromagnetic energy absorption requirements
float total_reduction = max(max(MPR + delta_MPR, A_MPR) + delta_T_IB + delta_TC + delta_rx_SRS, P_MPR);
float pcmax_high, pcmax_low;
if (p_Max) {
pcmax_high = p_emax < (p_powerclass - delta_P_powerclass) ? p_emax : (p_powerclass - delta_P_powerclass);
pcmax_low = (p_emax - delta_TC) < (p_powerclass - delta_P_powerclass - total_reduction)
? (p_emax - delta_TC)
: (p_powerclass - delta_P_powerclass - total_reduction);
} else {
pcmax_high = p_powerclass - delta_P_powerclass;
pcmax_low = p_powerclass - delta_P_powerclass - total_reduction;
}
// TODO we need a strategy to select a value between minimum and maximum allowed PC_max
float pcmax = (pcmax_low + pcmax_high) / 2;
LOG_D(MAC,
"Configured maximum output power: %f dBm <= PCMAX %f dBm <= %f dBm MPR=%.2f deltaMPR=%.2f\n",
pcmax_low,
pcmax,
pcmax_high,
MPR,
delta_MPR);
return pcmax;
} else {
// FR2 TODO it is even more complex because it is radiated power
return 23;
}
}
float nr_get_Pcmin(int bandwidth_index) {
const float table_38101_6_3_1_1[] = {
-40, -40, -40, -40, -39, -38.2, -37.5, -37, -36.5, -35.2, -34.6, -34, -33.5, -33
};
return table_38101_6_3_1_1[bandwidth_index];
}
// This is not entirely correct. In certain k2/k1/k0 settings we might postpone accumulating delta_PUCCH until next HARQ feedback
// slot. The correct way to do this would be to calculate the K_PUCCH (delta_PUCCH summation window end) for each PUCCH occasion and
// compare PUCCH transmission symbol with the reception symbol of the DCI containing delta_PUCCH to determine if the delta_PUCCH
// should be added at each occasion.
int get_sum_delta_pucch(NR_UE_MAC_INST_t *mac, int slot, frame_t frame)
{
int delta_tpc_sum = 0;
for (int i = 0; i < NR_MAX_HARQ_PROCESSES; i++) {
if (mac->dl_harq_info[i].active && mac->dl_harq_info[i].ul_slot == slot && mac->dl_harq_info[i].ul_frame == frame) {
delta_tpc_sum += mac->dl_harq_info[i].delta_pucch;
mac->dl_harq_info[i].delta_pucch = 0;
}
}
return delta_tpc_sum;
}
// PUCCH Power control according to 38.213 section 7.2.1
int16_t get_pucch_tx_power_ue(NR_UE_MAC_INST_t *mac,
int scs,
NR_PUCCH_Config_t *pucch_Config,
int sum_delta_pucch,
uint8_t format_type,
uint16_t nb_of_prbs,
uint8_t freq_hop_flag,
uint8_t add_dmrs_flag,
uint8_t N_symb_PUCCH,
int subframe_number,
int O_uci,
uint16_t start_prb)
{
NR_UE_UL_BWP_t *current_UL_BWP = mac->current_UL_BWP;
AssertFatal(current_UL_BWP && current_UL_BWP->pucch_ConfigCommon,
"Missing configuration: need UL_BWP and pucch_ConfigCommon to calculate PUCCH tx power\n");
int PUCCH_POWER_DEFAULT = 0;
// p0_nominal is optional
int16_t P_O_NOMINAL_PUCCH = DEFAULT_P0_NOMINAL_PUCCH_0_DBM;
if (current_UL_BWP->pucch_ConfigCommon->p0_nominal != NULL) {
P_O_NOMINAL_PUCCH = *current_UL_BWP->pucch_ConfigCommon->p0_nominal;
}
struct NR_PUCCH_PowerControl *power_config = pucch_Config ? pucch_Config->pucch_PowerControl : NULL;
if (!power_config)
return (PUCCH_POWER_DEFAULT);
int16_t P_O_UE_PUCCH = 0;
if (pucch_Config->spatialRelationInfoToAddModList != NULL) { /* FFS TODO NR */
LOG_D(MAC,"PUCCH Spatial relation infos are not yet implemented\n");
return (PUCCH_POWER_DEFAULT);
}
int G_b_f_c = 0;
if (power_config->p0_Set != NULL) {
P_O_UE_PUCCH = power_config->p0_Set->list.array[0]->p0_PUCCH_Value; /* get from index 0 if no spatial relation set */
}
int P_O_PUCCH = P_O_NOMINAL_PUCCH + P_O_UE_PUCCH;
int16_t delta_F_PUCCH = DEFAULT_DELTA_F_PUCCH_0_DB;
long *delta_F_PUCCH_config = NULL;
int DELTA_TF;
uint16_t N_ref_PUCCH;
int N_sc_ctrl_RB = 0;
/* computing of pucch transmission power adjustment */
switch (format_type) {
case 0:
N_ref_PUCCH = 2;
DELTA_TF = 10 * log10(N_ref_PUCCH/N_symb_PUCCH);
delta_F_PUCCH_config = power_config->deltaF_PUCCH_f0;
break;
case 1:
N_ref_PUCCH = 14;
DELTA_TF = 10 * log10(N_ref_PUCCH/N_symb_PUCCH * O_uci);
delta_F_PUCCH_config = power_config->deltaF_PUCCH_f1;
break;
case 2:
N_sc_ctrl_RB = 10;
DELTA_TF = get_deltatf(nb_of_prbs, N_symb_PUCCH, freq_hop_flag, add_dmrs_flag, N_sc_ctrl_RB, O_uci);
delta_F_PUCCH_config = power_config->deltaF_PUCCH_f2;
break;
case 3:
N_sc_ctrl_RB = 14;
DELTA_TF = get_deltatf(nb_of_prbs, N_symb_PUCCH, freq_hop_flag, add_dmrs_flag, N_sc_ctrl_RB, O_uci);
delta_F_PUCCH_config = power_config->deltaF_PUCCH_f3;
break;
case 4:
N_sc_ctrl_RB = 14/(nb_pucch_format_4_in_subframes[subframe_number]);
DELTA_TF = get_deltatf(nb_of_prbs, N_symb_PUCCH, freq_hop_flag, add_dmrs_flag, N_sc_ctrl_RB, O_uci);
delta_F_PUCCH_config = power_config->deltaF_PUCCH_f4;
break;
default:
{
LOG_E(MAC,"PUCCH unknown pucch format %d\n", format_type);
return (0);
}
}
if (delta_F_PUCCH_config != NULL) {
delta_F_PUCCH = *delta_F_PUCCH_config;
}
// 38.101-1: The allowed MPR for SRS, PUCCH formats 0, 1, 3 and 4, and PRACH shall be as specified for QPSK modulated DFT-
// s-OFDM of equivalent RB allocation. The allowed MPR for PUCCH format 2 shall be as specified for QPSK
// modulated CP-OFDM of equivalent RB allocation.
int P_CMAX = nr_get_Pcmax(mac->p_Max,
mac->nr_band,
mac->frame_type,
mac->frequency_range,
current_UL_BWP->channel_bandwidth,
2,
false,
mac->current_UL_BWP->scs,
mac->current_UL_BWP->BWPSize,
format_type == 2,
1,
start_prb);
float P_CMIN = current_UL_BWP->P_CMIN;
int16_t pathloss = compute_nr_SSB_PL(mac, mac->ssb_measurements.ssb_rsrp_dBm);
if (power_config->twoPUCCH_PC_AdjustmentStates && *power_config->twoPUCCH_PC_AdjustmentStates > 1) {
LOG_E(MAC,"PUCCH power control adjustment states with 2 states not yet implemented\n");
return (PUCCH_POWER_DEFAULT);
}
int M_pucch_component = (10 * log10((double)(pow(2,scs) * nb_of_prbs)));
int16_t pucch_power_without_g_pucch = P_O_PUCCH + M_pucch_component + pathloss + delta_F_PUCCH + DELTA_TF;
if (power_config->p0_Set == NULL) {
if (mac->pucch_power_control_initialized == false) {
// Initialize power control state
// Assuming only sending on PCell
NR_PRACH_RESOURCES_t* prach_resources = &mac->ra.prach_resources;
float DELTA_P_rampup_requested = (prach_resources->RA_PREAMBLE_POWER_RAMPING_COUNTER - 1) * prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP;
float DELTA_P_rampup = P_CMAX - (P_O_PUCCH + pathloss + delta_F_PUCCH + DELTA_TF + sum_delta_pucch);
DELTA_P_rampup = max(min(0, DELTA_P_rampup), DELTA_P_rampup_requested);
mac->G_b_f_c = DELTA_P_rampup + sum_delta_pucch;
mac->pucch_power_control_initialized = true;
}
else {
// PUCCH closed loop power control state
G_b_f_c = mac->G_b_f_c;
if (!((pucch_power_without_g_pucch + G_b_f_c >= P_CMAX && sum_delta_pucch > 0) ||
(pucch_power_without_g_pucch + G_b_f_c <= P_CMIN && sum_delta_pucch < 0))) {
G_b_f_c += sum_delta_pucch;
}
mac->G_b_f_c = G_b_f_c;
}
}
int pucch_power = min(P_CMAX, pucch_power_without_g_pucch + G_b_f_c);
LOG_D(MAC, "PUCCH ( Tx power : %d dBm ) ( 10Log(...) : %d ) ( from Path Loss : %d ) ( delta_F_PUCCH : %d ) ( DELTA_TF : %d ) ( G_b_f_c : %d ) \n",
pucch_power, M_pucch_component, pathloss, delta_F_PUCCH, DELTA_TF, G_b_f_c);
return pucch_power;
}
static int get_deltatf(uint16_t nb_of_prbs,
uint8_t N_symb_PUCCH,
uint8_t freq_hop_flag,
uint8_t add_dmrs_flag,
int N_sc_ctrl_RB,
int O_UCI)
{
int DELTA_TF;
int O_CRC = compute_pucch_crc_size(O_UCI);
int N_symb = N_symb_PUCCH < 4 ? N_symb_PUCCH : nb_symbols_excluding_dmrs[N_symb_PUCCH - 4][add_dmrs_flag][freq_hop_flag];
float N_RE = nb_of_prbs * N_sc_ctrl_RB * N_symb;
float K1 = 6;
if (O_UCI + O_CRC < 12)
DELTA_TF = 10 * log10((double)(((K1 * (O_UCI)) / N_RE)));
else {
float K2 = 2.4;
float BPRE = (O_UCI + O_CRC) / N_RE;
DELTA_TF = 10 * log10((double)(pow(2, (K2 * BPRE)) - 1));
}
return DELTA_TF;
}
// Returns the pathloss in dB for the active UL BWP on the selected carrier based on the DL RS associated with the PRACH transmission
// computation according to clause 7.4 (Physical random access channel) of 3GPP TS 38.213 version 16.3.0 Release 16
// Assumptions:
// - PRACH transmission from a UE is not in response to a detection of a PDCCH order by the UE
// Measurement units:
// - referenceSignalPower: dBm/RE (average EPRE of the resources elements that carry secondary synchronization signals in dBm)
int16_t compute_nr_SSB_PL(NR_UE_MAC_INST_t *mac, short ssb_rsrp_dBm)
{
fapi_nr_config_request_t *cfg = &mac->phy_config.config_req;
int referenceSignalPower = cfg->ssb_config.ss_pbch_power;
//TODO improve PL measurements. Probably not correct as it is.
int16_t pathloss = (int16_t)(referenceSignalPower - ssb_rsrp_dBm);
LOG_D(NR_MAC, "pathloss %d dB, referenceSignalPower %d dBm/RE (%f mW), RSRP %d dBm (%f mW)\n",
pathloss,
referenceSignalPower,
pow(10, referenceSignalPower/10),
ssb_rsrp_dBm,
pow(10, ssb_rsrp_dBm/10));
return pathloss;
}
// PUSCH transmission power according to 38.213 7.1
int get_pusch_tx_power_ue(NR_UE_MAC_INST_t *mac,
int num_rb,
int start_prb,
uint16_t nb_symb_sch,
uint16_t nb_dmrs_prb,
uint16_t nb_ptrs_prb,
uint16_t qm,
uint16_t R,
uint16_t beta_offset_csi1,
uint32_t sum_bits_in_codeblocks,
int delta_pusch,
bool is_rar_tx_retx,
bool transform_precoding)
{
LOG_D(NR_MAC,
"PUSCH tx power determination num_rb=%d start_prb=%d nb_symb_sch=%u nb_dmrs_prb=%u nb_ptrs_prb=%u Qm=%u R= %u "
"beta_offset_cs1=%u sum_bits_in_codeblocks=%u delta_pusch=%d is_rar_tx_retx=%d transform_precoding=%d\n",
num_rb,
start_prb,
nb_symb_sch,
nb_dmrs_prb,
nb_ptrs_prb,
qm,
R,
beta_offset_csi1,
sum_bits_in_codeblocks,
delta_pusch,
is_rar_tx_retx,
transform_precoding);
NR_UE_UL_BWP_t *current_UL_BWP = mac->current_UL_BWP;
AssertFatal(current_UL_BWP, "Missing configuration: need UL_BWP to calculate PUSCH tx power\n");
NR_PUSCH_Config_t *pusch_Config = current_UL_BWP->pusch_Config;
bool has_pusch_config = pusch_Config != NULL;
bool has_pusch_power_control_config = has_pusch_config && pusch_Config->pusch_PowerControl != NULL;
bool is_provided_alpha_sets = has_pusch_power_control_config && pusch_Config->pusch_PowerControl->p0_AlphaSets != NULL;
AssertFatal(!has_pusch_power_control_config || pusch_Config->pusch_PowerControl->sri_PUSCH_MappingToAddModList == NULL,
"SRI-PUSCH-PowerControl handling not implemented\n");
int P_O_NOMINAL_PUSCH;
float alpha;
const float alpha_factor_table[8] = {0.0f, 0.4f, 0.5f, 0.6f, 0.7f, 0.8f, 0.9f, 1.0f};
if (is_rar_tx_retx || !is_provided_alpha_sets || current_UL_BWP->p0_NominalWithGrant == NULL) {
int DELTA_PREAMBLE_MSG3 = 0;
if (current_UL_BWP->msg3_DeltaPreamble) {
DELTA_PREAMBLE_MSG3 = *current_UL_BWP->msg3_DeltaPreamble;
}
NR_RACH_ConfigCommon_t *nr_rach_ConfigCommon = current_UL_BWP->rach_ConfigCommon;
long preambleReceivedTargetPower = nr_rach_ConfigCommon->rach_ConfigGeneric.preambleReceivedTargetPower;
int P_O_PRE = preambleReceivedTargetPower;
P_O_NOMINAL_PUSCH = P_O_PRE + DELTA_PREAMBLE_MSG3;
if (has_pusch_power_control_config && pusch_Config->pusch_PowerControl->msg3_Alpha) {
alpha = alpha_factor_table[*pusch_Config->pusch_PowerControl->msg3_Alpha];
} else {
alpha = 1.0f;
}
} else {
P_O_NOMINAL_PUSCH = *current_UL_BWP->p0_NominalWithGrant;
if (pusch_Config->pusch_PowerControl->p0_AlphaSets->list.array[0]->alpha) {
alpha = alpha_factor_table[*pusch_Config->pusch_PowerControl->p0_AlphaSets->list.array[0]->alpha];
} else {
// Default according to 38.331 P0-PUSCH-AlphaSet field descriptions
alpha = 1.0f;
}
}
int P_O_UE_PUSCH;
if (is_rar_tx_retx || !is_provided_alpha_sets) {
P_O_UE_PUSCH = 0;
} else {
if (pusch_Config->pusch_PowerControl->p0_AlphaSets->list.array[0]->p0) {
P_O_UE_PUSCH = *pusch_Config->pusch_PowerControl->p0_AlphaSets->list.array[0]->p0;
} else {
// Default according to 38.331 P0-PUSCH-AlphaSet field descriptions
P_O_UE_PUSCH = 0;
}
}
int mu = current_UL_BWP->scs;
int M_pusch_component = 10 * log10((pow(2, mu)) * num_rb);
int P_CMAX = nr_get_Pcmax(mac->p_Max,
mac->nr_band,
mac->frame_type,
mac->frequency_range,
mac->current_UL_BWP->channel_bandwidth,
qm,
false,
mac->current_UL_BWP->scs,
mac->current_UL_BWP->BWPSize,
transform_precoding,
num_rb,
start_prb);
int P_O_PUSCH = P_O_NOMINAL_PUSCH + P_O_UE_PUSCH;
float DELTA_TF = 0;
if (has_pusch_power_control_config && pusch_Config->pusch_PowerControl->deltaMCS) {
float beta_offset = 1;
float BPRE;
if (sum_bits_in_codeblocks == 0) {
float table_38_213_9_3_2[] = {
1.125, 11.250, 21.375, 31.625, 41.750, 52.000, 62.250, 72.500, 82.875, 93.125,
103.500, 114.000, 125.000, 136.250, 148.000, 1510.000, 1612.625, 1715.875, 1820.000,
};
beta_offset = table_38_213_9_3_2[beta_offset_csi1];
BPRE = (qm * R / beta_offset) / 1024;
} else {
const int nb_subcarrier_per_rb = 12;
const uint32_t N_RE = nb_subcarrier_per_rb * nb_symb_sch - nb_dmrs_prb - nb_ptrs_prb;
BPRE = sum_bits_in_codeblocks / (float)(N_RE * num_rb);
}
DELTA_TF = 10 * log10(pow(2, BPRE * 1.25f) * beta_offset);
}
// TODO: compute pathoss using correct reference
int16_t pathloss = compute_nr_SSB_PL(mac, mac->ssb_measurements.ssb_rsrp_dBm);
int P_CMIN = mac->current_UL_BWP->P_CMIN;
float pusch_power_without_f_b_f_c = P_O_PUSCH + M_pusch_component + alpha * pathloss + DELTA_TF;
int f_b_f_c = 0;
if (has_pusch_power_control_config && pusch_Config->pusch_PowerControl->tpc_Accumulation) {
f_b_f_c = delta_pusch;
} else {
if (!mac->pusch_power_control_initialized && is_rar_tx_retx) {
NR_PRACH_RESOURCES_t* prach_resources = &mac->ra.prach_resources;
float DELTA_P_rampup_requested = (prach_resources->RA_PREAMBLE_POWER_RAMPING_COUNTER - 1) * prach_resources->RA_PREAMBLE_POWER_RAMPING_STEP;
float DELTA_P_rampup = P_CMAX - (P_O_PUSCH + M_pusch_component + alpha * pathloss + DELTA_TF + delta_pusch);
DELTA_P_rampup = min(DELTA_P_rampup_requested, max(0, DELTA_P_rampup));
mac->f_b_f_c = DELTA_P_rampup + delta_pusch;
mac->pusch_power_control_initialized = true;
} else {
if (!((pusch_power_without_f_b_f_c + mac->f_b_f_c >= P_CMAX && delta_pusch > 0) ||
(pusch_power_without_f_b_f_c + mac->f_b_f_c <= P_CMIN && delta_pusch < 0))) {
mac->f_b_f_c += delta_pusch;
}
}
f_b_f_c = mac->f_b_f_c;
}
LOG_D(NR_MAC,
"PUSCH tx power components P_O_PUSCH=%d, M_pusch_component=%d, alpha*pathloss=%f, delta_TF=%f, f_b_f_c=%d\n",
P_O_PUSCH,
M_pusch_component,
alpha * pathloss,
DELTA_TF,
f_b_f_c);
return min(P_CMAX, P_O_PUSCH + M_pusch_component + alpha * pathloss + DELTA_TF + f_b_f_c);
}
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