Cedric Roux
9e4f700aae
With the new threading architecture of the UE dlsim (and others) does not work properly anymore. When looking at the scope, you see a difference in PDSCH LLR display. The end is always 0 where in the current develop branch (tag 2017.w25) it's not. This commit attempts to fix it. We still don't have the same behavior as in 2017.w25. I disabled channel simulation (so that UE RX = eNB TX) and I have one error where in 2017.w25 I have zero. For example, here comes the output of a run of "./dlsim": **********************SNR = 0.000000 dB (tx_lev 51.000000)************************** Errors (1(0)/1000 0/1 0/0 0/0), Pe = (1.000000e-03,0.000000e+00,-nan,-nan), dci_errors 0/1001, Pe = 0.000000e+00 => effective rate 99.900100, normalized delay 0.001472 (1.001000) And in 2017.w25 we have (with the same hack to disable channel simulation): **********************SNR = 0.000000 dB (tx_lev 51.000000)************************** Errors (0(0)/1000 0/0 0/0 0/0), Pe = (0.000000e+00,-nan,-nan,-nan), dci_errors 0/1000, Pe = 0.000000e+00 => effective rate 100.000000, normalized delay 0.001471 (1.000000) There may be a problem somewhere. Or there was one before and we should have had one error and the new UE architecture fixed things and now it's as it has to be. Hard to say at this point... When looking at the scope we quickly see some zeros for the PDSCH LLR, at the begining this time, not at the end. This is just when the GUI appears and then all is fine, so this seems to be for the first frame only. In 2017.w25 this does not happen.
139 lines
4.6 KiB
C
139 lines
4.6 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <string.h>
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#include <math.h>
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#include <unistd.h>
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#include <execinfo.h>
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#include <signal.h>
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#include "SIMULATION/TOOLS/defs.h"
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#include "PHY/types.h"
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#include "PHY/defs.h"
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#include "PHY/extern.h"
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extern PHY_VARS_eNB *eNB;
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extern PHY_VARS_UE *UE;
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void lte_param_init(unsigned char N_tx_port_eNB,
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unsigned char N_tx_phy,
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unsigned char N_rx,
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unsigned char transmission_mode,
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uint8_t extended_prefix_flag,
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frame_t frame_type,
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uint16_t Nid_cell,
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uint8_t tdd_config,
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uint8_t N_RB_DL,
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uint8_t threequarter_fs,
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uint8_t osf,
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uint32_t perfect_ce)
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{
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LTE_DL_FRAME_PARMS *frame_parms;
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int i;
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printf("Start lte_param_init\n");
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eNB = malloc(sizeof(PHY_VARS_eNB));
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UE = malloc(sizeof(PHY_VARS_UE));
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memset((void*)eNB,0,sizeof(PHY_VARS_eNB));
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memset((void*)UE,0,sizeof(PHY_VARS_UE));
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//PHY_config = malloc(sizeof(PHY_CONFIG));
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mac_xface = malloc(sizeof(MAC_xface));
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srand(0);
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randominit(0);
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set_taus_seed(0);
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frame_parms = &(eNB->frame_parms);
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frame_parms->N_RB_DL = N_RB_DL; //50 for 10MHz and 25 for 5 MHz
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frame_parms->N_RB_UL = N_RB_DL;
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frame_parms->threequarter_fs = threequarter_fs;
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frame_parms->Ncp = extended_prefix_flag;
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frame_parms->Ncp_UL = extended_prefix_flag;
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frame_parms->Nid_cell = Nid_cell;
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frame_parms->nushift = Nid_cell%6;
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frame_parms->nb_antennas_tx = N_tx_phy;
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frame_parms->nb_antennas_rx = N_rx;
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frame_parms->nb_antenna_ports_eNB = N_tx_port_eNB;
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frame_parms->phich_config_common.phich_resource = oneSixth;
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frame_parms->phich_config_common.phich_duration = normal;
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frame_parms->tdd_config = tdd_config;
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frame_parms->frame_type = frame_type;
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// frame_parms->Csrs = 2;
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// frame_parms->Bsrs = 0;
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// frame_parms->kTC = 0;44
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// frame_parms->n_RRC = 0;
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frame_parms->mode1_flag = (transmission_mode == 1 || transmission_mode ==7)? 1 : 0;
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init_frame_parms(frame_parms,osf);
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//copy_lte_parms_to_phy_framing(frame_parms, &(PHY_config->PHY_framing));
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// phy_init_top(frame_parms); //allocation
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UE->is_secondary_ue = 0;
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UE->frame_parms = *frame_parms;
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eNB->frame_parms = *frame_parms;
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eNB->transmission_mode[0] = transmission_mode;
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UE->transmission_mode[0] = transmission_mode;
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phy_init_lte_top(frame_parms);
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dump_frame_parms(frame_parms);
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UE->measurements.n_adj_cells=0;
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UE->measurements.adj_cell_id[0] = Nid_cell+1;
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UE->measurements.adj_cell_id[1] = Nid_cell+2;
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for (i=0; i<3; i++)
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lte_gold(frame_parms,UE->lte_gold_table[i],Nid_cell+i);
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phy_init_lte_ue(UE,1,0);
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phy_init_lte_eNB(eNB,0,0);
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generate_pcfich_reg_mapping(&UE->frame_parms);
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generate_phich_reg_mapping(&UE->frame_parms);
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// DL power control init
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//if (transmission_mode == 1) {
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if (transmission_mode == 1 || transmission_mode ==7) {
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eNB->pdsch_config_dedicated->p_a = dB0; // 4 = 0dB
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((eNB->frame_parms).pdsch_config_common).p_b = 0;
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UE->pdsch_config_dedicated->p_a = dB0; // 4 = 0dB
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((UE->frame_parms).pdsch_config_common).p_b = 0;
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} else { // rho_a = rhob
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eNB->pdsch_config_dedicated->p_a = dBm3; // 4 = 0dB
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((eNB->frame_parms).pdsch_config_common).p_b = 1;
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UE->pdsch_config_dedicated->p_a = dBm3; // 4 = 0dB
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((UE->frame_parms).pdsch_config_common).p_b = 1;
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}
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UE->perfect_ce = perfect_ce;
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/* the UE code is multi-thread "aware", we need to setup this array */
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for (i = 0; i < 10; i++) UE->current_thread_id[i] = i % 2;
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printf("Done lte_param_init\n");
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}
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