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openairinterface5g/targets/RT/USER/lte-ue.c
T
Cedric Roux a48c36582f bugfix: fix threading in the UE 
Various problems were found with the basic simulator.

Variables used by various threads for synchronization need to
be initialized properly. That is before the various threads
start using them.

This goes for:
- UE->is_synchronized
- UE->proc.instance_cnt_synch
- UE->proc.instance_cnt_rxtx

The function "UE->rfdevice.trx_start_func" was called in
"UE_thread_synch" but should be called in "UE_thread" because
"UE_thread" is the one that calls "UE->rfdevice.trx_read_func"
and there is no guaranty that the call to "UE->rfdevice.trx_start_func"
is done before as it has to (it's in another thread).

And finally "pthread_cond_signal(&proc->cond_rxtx)" was called twice,
which may not be a problem but was certainly not intended. Plus
removing one call simplifies the code by removing some "if" logic,
which is a good thing per se.

This commit was not tested with a real UE and may thus introduce some
issues. Hopefully not!
2018-08-27 17:46:03 +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 lte-ue.c
* \brief threads and support functions for real-time LTE UE target
* \author R. Knopp, F. Kaltenberger, Navid Nikaein
* \date 2015
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr, navid.nikaein@eurecom.fr
* \note
* \warning
*/
#include "lte-softmodem.h"
#include "rt_wrapper.h"
#include "LAYER2/MAC/mac.h"
#include "RRC/LTE/rrc_extern.h"
#include "PHY_INTERFACE/phy_stub_UE.h"
#include "PHY_INTERFACE/phy_interface_extern.h"
#include "PHY/INIT/phy_init.h"
#include "PHY/MODULATION/modulation_UE.h"
#include "PHY/LTE_ESTIMATION/lte_estimation.h"
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
//#undef FRAME_LENGTH_COMPLEX_SAMPLES //there are two conflicting definitions, so we better make sure we don't use it at all
#include "PHY/phy_extern_ue.h"
#include "LAYER2/MAC/mac_extern.h"
#include "LAYER2/MAC/mac_proto.h"
#include "SCHED_UE/sched_UE.h"
#include "PHY/LTE_UE_TRANSPORT/transport_proto_ue.h"
#include <inttypes.h>
#include "common/utils/LOG/log.h"
#include "UTIL/OTG/otg_tx.h"
#include "UTIL/OTG/otg_externs.h"
#include "UTIL/MATH/oml.h"
#include "common/utils/LOG/vcd_signal_dumper.h"
#include "UTIL/OPT/opt.h"
#include "T.h"
extern double cpuf;
extern uint8_t nfapi_mode;
#define FRAME_PERIOD 100000000ULL
#define DAQ_PERIOD 66667ULL
#define FIFO_PRIORITY 40
typedef enum {
pss=0,
pbch=1,
si=2
} sync_mode_t;
void init_UE_threads(int);
void init_UE_threads_stub(int);
void init_UE_single_thread_stub(int);
void *UE_thread(void *arg);
void init_UE(int nb_inst,int eMBMS_active, int uecap_xer_in, int timing_correction, int phy_test, int UE_scan, int UE_scan_carrier, runmode_t mode,int rxgain,int txpowermax,LTE_DL_FRAME_PARMS *fp);
void init_UE_stub(int nb_inst,int,int,char*);
void init_UE_stub_single_thread(int nb_inst,int,int,char*);
int init_timer_thread(void);
extern void oai_subframe_ind(uint16_t sfn, uint16_t sf);
extern void multicast_link_start(void (*rx_handlerP) (unsigned int, char *),
unsigned char _multicast_group, char *multicast_ifname);
extern int oai_nfapi_crc_indication(nfapi_crc_indication_t *crc_ind);
extern int oai_nfapi_crc_indication(nfapi_crc_indication_t *crc_ind);
extern int oai_nfapi_harq_indication(nfapi_harq_indication_t *harq_ind);
extern int oai_nfapi_sr_indication(nfapi_sr_indication_t *ind);
extern int oai_nfapi_rx_ind(nfapi_rx_indication_t *ind);
extern int multicast_link_write_sock(int groupP, char *dataP, uint32_t sizeP);
extern int simL1flag;
//extern int tx_req_UE_MAC1();
void ue_stub_rx_handler(unsigned int, char *);
int32_t **rxdata;
int32_t **txdata;
int timer_subframe;
int timer_frame;
SF_ticking *phy_stub_ticking;
#define KHz (1000UL)
#define MHz (1000*KHz)
typedef struct eutra_band_s {
int16_t band;
uint32_t ul_min;
uint32_t ul_max;
uint32_t dl_min;
uint32_t dl_max;
lte_frame_type_t frame_type;
} eutra_band_t;
typedef struct band_info_s {
int nbands;
eutra_band_t band_info[100];
} band_info_t;
band_info_t bands_to_scan;
static const eutra_band_t eutra_bands[] = {
{ 1, 1920 * MHz, 1980 * MHz, 2110 * MHz, 2170 * MHz, FDD},
{ 2, 1850 * MHz, 1910 * MHz, 1930 * MHz, 1990 * MHz, FDD},
{ 3, 1710 * MHz, 1785 * MHz, 1805 * MHz, 1880 * MHz, FDD},
{ 4, 1710 * MHz, 1755 * MHz, 2110 * MHz, 2155 * MHz, FDD},
{ 5, 824 * MHz, 849 * MHz, 869 * MHz, 894 * MHz, FDD},
{ 6, 830 * MHz, 840 * MHz, 875 * MHz, 885 * MHz, FDD},
{ 7, 2500 * MHz, 2570 * MHz, 2620 * MHz, 2690 * MHz, FDD},
{ 8, 880 * MHz, 915 * MHz, 925 * MHz, 960 * MHz, FDD},
{ 9, 1749900 * KHz, 1784900 * KHz, 1844900 * KHz, 1879900 * KHz, FDD},
{10, 1710 * MHz, 1770 * MHz, 2110 * MHz, 2170 * MHz, FDD},
{11, 1427900 * KHz, 1452900 * KHz, 1475900 * KHz, 1500900 * KHz, FDD},
{12, 698 * MHz, 716 * MHz, 728 * MHz, 746 * MHz, FDD},
{13, 777 * MHz, 787 * MHz, 746 * MHz, 756 * MHz, FDD},
{14, 788 * MHz, 798 * MHz, 758 * MHz, 768 * MHz, FDD},
{17, 704 * MHz, 716 * MHz, 734 * MHz, 746 * MHz, FDD},
{20, 832 * MHz, 862 * MHz, 791 * MHz, 821 * MHz, FDD},
{22, 3510 * MHz, 3590 * MHz, 3410 * MHz, 3490 * MHz, FDD},
{33, 1900 * MHz, 1920 * MHz, 1900 * MHz, 1920 * MHz, TDD},
{34, 2010 * MHz, 2025 * MHz, 2010 * MHz, 2025 * MHz, TDD},
{35, 1850 * MHz, 1910 * MHz, 1850 * MHz, 1910 * MHz, TDD},
{36, 1930 * MHz, 1990 * MHz, 1930 * MHz, 1990 * MHz, TDD},
{37, 1910 * MHz, 1930 * MHz, 1910 * MHz, 1930 * MHz, TDD},
{38, 2570 * MHz, 2620 * MHz, 2570 * MHz, 2630 * MHz, TDD},
{39, 1880 * MHz, 1920 * MHz, 1880 * MHz, 1920 * MHz, TDD},
{40, 2300 * MHz, 2400 * MHz, 2300 * MHz, 2400 * MHz, TDD},
{41, 2496 * MHz, 2690 * MHz, 2496 * MHz, 2690 * MHz, TDD},
{42, 3400 * MHz, 3600 * MHz, 3400 * MHz, 3600 * MHz, TDD},
{43, 3600 * MHz, 3800 * MHz, 3600 * MHz, 3800 * MHz, TDD},
{44, 703 * MHz, 803 * MHz, 703 * MHz, 803 * MHz, TDD},
};
pthread_t main_ue_thread;
pthread_attr_t attr_UE_thread;
struct sched_param sched_param_UE_thread;
void phy_init_lte_ue_transport(PHY_VARS_UE *ue,int absraction_flag);
PHY_VARS_UE* init_ue_vars(LTE_DL_FRAME_PARMS *frame_parms,
uint8_t UE_id,
uint8_t abstraction_flag)
{
PHY_VARS_UE* ue = (PHY_VARS_UE *)malloc(sizeof(PHY_VARS_UE));
memset(ue,0,sizeof(PHY_VARS_UE));
if (frame_parms!=(LTE_DL_FRAME_PARMS *)NULL) { // if we want to give initial frame parms, allocate the PHY_VARS_UE structure and put them in
memcpy(&(ue->frame_parms), frame_parms, sizeof(LTE_DL_FRAME_PARMS));
}
ue->Mod_id = UE_id;
ue->mac_enabled = 1;
// In phy_stub_UE (MAC-to-MAC) mode these init functions don't need to get called. Is this correct?
if (nfapi_mode!=3)
{
// initialize all signal buffers
init_lte_ue_signal(ue,1,abstraction_flag);
// intialize transport
init_lte_ue_transport(ue,abstraction_flag);
}
return(ue);
}
char uecap_xer[1024];
void init_thread(int sched_runtime, int sched_deadline, int sched_fifo, cpu_set_t *cpuset, char * name) {
#ifdef DEADLINE_SCHEDULER
if (sched_runtime!=0) {
struct sched_attr attr= {0};
attr.size = sizeof(attr);
attr.sched_policy = SCHED_DEADLINE;
attr.sched_runtime = sched_runtime;
attr.sched_deadline = sched_deadline;
attr.sched_period = 0;
AssertFatal(sched_setattr(0, &attr, 0) == 0,
"[SCHED] %s thread: sched_setattr failed %s \n", name, strerror(errno));
LOG_I(HW,"[SCHED][eNB] %s deadline thread %lu started on CPU %d\n",
name, (unsigned long)gettid(), sched_getcpu());
}
#else
if (CPU_COUNT(cpuset) > 0)
AssertFatal( 0 == pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), cpuset), "");
struct sched_param sp;
sp.sched_priority = sched_fifo;
AssertFatal(pthread_setschedparam(pthread_self(),SCHED_FIFO,&sp)==0,
"Can't set thread priority, Are you root?\n");
/* Check the actual affinity mask assigned to the thread */
cpu_set_t *cset=CPU_ALLOC(CPU_SETSIZE);
if (0 == pthread_getaffinity_np(pthread_self(), CPU_ALLOC_SIZE(CPU_SETSIZE), cset)) {
char txt[512]={0};
for (int j = 0; j < CPU_SETSIZE; j++)
if (CPU_ISSET(j, cset))
sprintf(txt+strlen(txt), " %d ", j);
printf("CPU Affinity of thread %s is %s\n", name, txt);
}
CPU_FREE(cset);
#endif
}
void init_UE(int nb_inst,int eMBMS_active, int uecap_xer_in, int timing_correction, int phy_test, int UE_scan, int UE_scan_carrier, runmode_t mode,int rxgain,int txpowermax,LTE_DL_FRAME_PARMS *fp0) {
PHY_VARS_UE *UE;
int inst;
int ret;
LTE_DL_FRAME_PARMS *fp;
LOG_I(PHY,"UE : Calling Layer 2 for initialization\n");
l2_init_ue(eMBMS_active,(uecap_xer_in==1)?uecap_xer:NULL,
0,// cba_group_active
0); // HO flag
if (PHY_vars_UE_g==NULL) PHY_vars_UE_g = (PHY_VARS_UE***)calloc(1+nb_inst,sizeof(PHY_VARS_UE**));
for (inst=0;inst<nb_inst;inst++) {
if (PHY_vars_UE_g[inst]==NULL) PHY_vars_UE_g[inst] = (PHY_VARS_UE**)calloc(1+MAX_NUM_CCs,sizeof(PHY_VARS_UE*));
LOG_I(PHY,"Allocating UE context %d\n",inst);
if (simL1flag == 0) PHY_vars_UE_g[inst][0] = init_ue_vars(fp0,inst,0);
else {
// needed for memcopy below. these are not used in the RU, but needed for UE
RC.ru[0]->frame_parms.nb_antennas_rx = fp0->nb_antennas_rx;
RC.ru[0]->frame_parms.nb_antennas_tx = fp0->nb_antennas_tx;
PHY_vars_UE_g[inst][0] = init_ue_vars(&RC.ru[0]->frame_parms,inst,0);
}
// turn off timing control loop in UE
PHY_vars_UE_g[inst][0]->no_timing_correction = timing_correction;
UE = PHY_vars_UE_g[inst][0];
fp = &UE->frame_parms;
printf("PHY_vars_UE_g[0][0] = %p\n",UE);
if (phy_test==1)
UE->mac_enabled = 0;
else
UE->mac_enabled = 1;
if (UE->mac_enabled == 0) { //set default UL parameters for testing mode
for (int i=0; i<NUMBER_OF_CONNECTED_eNB_MAX; i++) {
UE->pusch_config_dedicated[i].betaOffset_ACK_Index = 0;
UE->pusch_config_dedicated[i].betaOffset_RI_Index = 0;
UE->pusch_config_dedicated[i].betaOffset_CQI_Index = 2;
UE->scheduling_request_config[i].sr_PUCCH_ResourceIndex = 0;
UE->scheduling_request_config[i].sr_ConfigIndex = 7+(0%3);
UE->scheduling_request_config[i].dsr_TransMax = sr_n4;
}
}
UE->UE_scan = UE_scan;
UE->UE_scan_carrier = UE_scan_carrier;
UE->mode = mode;
printf("UE->mode = %d\n",mode);
if (UE->mac_enabled == 1) {
UE->pdcch_vars[0][0]->crnti = 0x1234;
UE->pdcch_vars[1][0]->crnti = 0x1234;
}else {
UE->pdcch_vars[0][0]->crnti = 0x1235;
UE->pdcch_vars[1][0]->crnti = 0x1235;
}
UE->rx_total_gain_dB = rxgain;
UE->tx_power_max_dBm = txpowermax;
UE->frame_parms.nb_antennas_tx = fp0->nb_antennas_tx;
UE->frame_parms.nb_antennas_rx = fp0->nb_antennas_rx;
if (fp->frame_type == TDD) {
switch (fp->N_RB_DL) {
case 100:
if (fp->threequarter_fs) UE->N_TA_offset = (624*3)/4;
else UE->N_TA_offset = 624;
break;
case 75:
UE->N_TA_offset = (624*3)/4;
break;
case 50:
UE->N_TA_offset = 624/2;
break;
case 25:
UE->N_TA_offset = 624/4;
break;
case 15:
UE->N_TA_offset = 624/8;
break;
case 6:
UE->N_TA_offset = 624/16;
break;
default:
AssertFatal(1==0,"illegal N_RB_DL %d\n",fp->N_RB_DL);
break;
}
}
else UE->N_TA_offset = 0;
if (simL1flag == 1) init_ue_devices(UE);
LOG_I(PHY,"Intializing UE Threads for instance %d (%p,%p)...\n",inst,PHY_vars_UE_g[inst],PHY_vars_UE_g[inst][0]);
init_UE_threads(inst);
if (simL1flag == 0) {
ret = openair0_device_load(&(UE->rfdevice), &openair0_cfg[0]);
if (ret !=0){
exit_fun("Error loading device library");
}
}
UE->rfdevice.host_type = RAU_HOST;
// UE->rfdevice.type = NONE_DEV;
AssertFatal(0 == pthread_create(&UE->proc.pthread_ue,
&UE->proc.attr_ue,
UE_thread,
(void*)UE), "");
}
printf("UE threads created by %ld\n", gettid());
}
// Initiating all UEs within a single set of threads for PHY_STUB. Future extensions -> multiple
// set of threads for multiple UEs.
void init_UE_stub_single_thread(int nb_inst,int eMBMS_active, int uecap_xer_in, char *emul_iface) {
int inst;
LOG_I(PHY,"UE : Calling Layer 2 for initialization, nb_inst: %d \n", nb_inst);
l2_init_ue(eMBMS_active,(uecap_xer_in==1)?uecap_xer:NULL,
0,// cba_group_active
0); // HO flag
for (inst=0;inst<nb_inst;inst++) {
LOG_I(PHY,"Initializing memory for UE instance %d (%p)\n",inst,PHY_vars_UE_g[inst]);
PHY_vars_UE_g[inst][0] = init_ue_vars(NULL,inst,0);
}
init_timer_thread();
init_UE_single_thread_stub(nb_inst);
printf("UE threads created \n");
LOG_I(PHY,"Starting multicast link on %s\n",emul_iface);
if(nfapi_mode!=3)
multicast_link_start(ue_stub_rx_handler,0,emul_iface);
}
void init_UE_stub(int nb_inst,int eMBMS_active, int uecap_xer_in, char *emul_iface) {
int inst;
LOG_I(PHY,"UE : Calling Layer 2 for initialization\n");
l2_init_ue(eMBMS_active,(uecap_xer_in==1)?uecap_xer:NULL,
0,// cba_group_active
0); // HO flag
for (inst=0;inst<nb_inst;inst++) {
LOG_I(PHY,"Initializing memory for UE instance %d (%p)\n",inst,PHY_vars_UE_g[inst]);
PHY_vars_UE_g[inst][0] = init_ue_vars(NULL,inst,0);
}
init_timer_thread();
for (inst=0;inst<nb_inst;inst++) {
LOG_I(PHY,"Intializing UE Threads for instance %d (%p,%p)...\n",inst,PHY_vars_UE_g[inst],PHY_vars_UE_g[inst][0]);
init_UE_threads_stub(inst);
}
printf("UE threads created \n");
LOG_I(PHY,"Starting multicast link on %s\n",emul_iface);
if(nfapi_mode !=3)
multicast_link_start(ue_stub_rx_handler,0,emul_iface);
}
/*!
* \brief This is the UE synchronize thread.
* It performs band scanning and synchonization.
* \param arg is a pointer to a \ref PHY_VARS_UE structure.
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
static void *UE_thread_synch(void *arg)
{
static int UE_thread_synch_retval;
int i ;
PHY_VARS_UE *UE = (PHY_VARS_UE*) arg;
int current_band = 0;
int current_offset = 0;
sync_mode_t sync_mode = pbch;
int CC_id = UE->CC_id;
int ind;
int found;
int freq_offset=0;
char threadname[128];
printf("UE_thread_sync in with PHY_vars_UE %p\n",arg);
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
if ( threads.iq != -1 )
CPU_SET(threads.iq, &cpuset);
// this thread priority must be lower that the main acquisition thread
sprintf(threadname, "sync UE %d\n", UE->Mod_id);
init_thread(100000, 500000, FIFO_PRIORITY-1, &cpuset, threadname);
printf("starting UE synch thread (IC %d)\n",UE->proc.instance_cnt_synch);
ind = 0;
found = 0;
if (UE->UE_scan == 0) {
do {
current_band = eutra_bands[ind].band;
printf( "Scanning band %d, dl_min %"PRIu32", ul_min %"PRIu32"\n", current_band, eutra_bands[ind].dl_min,eutra_bands[ind].ul_min);
if ((eutra_bands[ind].dl_min <= UE->frame_parms.dl_CarrierFreq) && (eutra_bands[ind].dl_max >= UE->frame_parms.dl_CarrierFreq)) {
for (i=0; i<4; i++)
uplink_frequency_offset[CC_id][i] = eutra_bands[ind].ul_min - eutra_bands[ind].dl_min;
found = 1;
break;
}
ind++;
} while (ind < sizeof(eutra_bands) / sizeof(eutra_bands[0]));
if (found == 0) {
LOG_E(PHY,"Can't find EUTRA band for frequency %d",UE->frame_parms.dl_CarrierFreq);
exit_fun("Can't find EUTRA band for frequency");
return &UE_thread_synch_retval;
}
LOG_I( PHY, "[SCHED][UE] Check absolute frequency DL %"PRIu32", UL %"PRIu32" (oai_exit %d, rx_num_channels %d)\n", UE->frame_parms.dl_CarrierFreq, UE->frame_parms.ul_CarrierFreq,oai_exit, openair0_cfg[0].rx_num_channels);
for (i=0;i<openair0_cfg[UE->rf_map.card].rx_num_channels;i++) {
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = UE->frame_parms.dl_CarrierFreq;
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] = UE->frame_parms.ul_CarrierFreq;
openair0_cfg[UE->rf_map.card].autocal[UE->rf_map.chain+i] = 1;
if (uplink_frequency_offset[CC_id][i] != 0) //
openair0_cfg[UE->rf_map.card].duplex_mode = duplex_mode_FDD;
else //FDD
openair0_cfg[UE->rf_map.card].duplex_mode = duplex_mode_TDD;
}
sync_mode = pbch;
} else if (UE->UE_scan == 1) {
current_band=0;
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
downlink_frequency[UE->rf_map.card][UE->rf_map.chain+i] = bands_to_scan.band_info[CC_id].dl_min;
uplink_frequency_offset[UE->rf_map.card][UE->rf_map.chain+i] =
bands_to_scan.band_info[CC_id].ul_min-bands_to_scan.band_info[CC_id].dl_min;
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = downlink_frequency[CC_id][i];
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] =
downlink_frequency[CC_id][i]+uplink_frequency_offset[CC_id][i];
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;
}
}
/*
while (sync_var<0)
pthread_cond_wait(&sync_cond, &sync_mutex);
pthread_mutex_unlock(&sync_mutex);
*/
wait_sync("UE_thread_sync");
printf("Started device, unlocked sync_mutex (UE_sync_thread)\n");
while (oai_exit==0) {
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
while (UE->proc.instance_cnt_synch < 0)
// the thread waits here most of the time
pthread_cond_wait( &UE->proc.cond_synch, &UE->proc.mutex_synch );
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
switch (sync_mode) {
case pss:
LOG_I(PHY,"[SCHED][UE] Scanning band %d (%d), freq %u\n",bands_to_scan.band_info[current_band].band, current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
lte_sync_timefreq(UE,current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
current_offset += 20000000; // increase by 20 MHz
if (current_offset > bands_to_scan.band_info[current_band].dl_max-bands_to_scan.band_info[current_band].dl_min) {
current_band++;
current_offset=0;
}
if (current_band==bands_to_scan.nbands) {
current_band=0;
oai_exit=1;
}
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
downlink_frequency[UE->rf_map.card][UE->rf_map.chain+i] = bands_to_scan.band_info[current_band].dl_min+current_offset;
uplink_frequency_offset[UE->rf_map.card][UE->rf_map.chain+i] = bands_to_scan.band_info[current_band].ul_min-bands_to_scan.band_info[0].dl_min + current_offset;
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = downlink_frequency[CC_id][i];
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] = downlink_frequency[CC_id][i]+uplink_frequency_offset[CC_id][i];
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;
if (UE->UE_scan_carrier) {
openair0_cfg[UE->rf_map.card].autocal[UE->rf_map.chain+i] = 1;
}
}
break;
case pbch:
#if DISABLE_LOG_X
printf("[UE thread Synch] Running Initial Synch (mode %d)\n",UE->mode);
#else
LOG_I(PHY, "[UE thread Synch] Running Initial Synch (mode %d)\n",UE->mode);
#endif
if (initial_sync( UE, UE->mode ) == 0) {
LOG_I( HW, "Got synch: hw_slot_offset %d, carrier off %d Hz, rxgain %d (DL %u, UL %u), UE_scan_carrier %d\n",
(UE->rx_offset<<1) / UE->frame_parms.samples_per_tti,
freq_offset,
UE->rx_total_gain_dB,
downlink_frequency[0][0]+freq_offset,
downlink_frequency[0][0]+uplink_frequency_offset[0][0]+freq_offset,
UE->UE_scan_carrier );
// rerun with new cell parameters and frequency-offset
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;//-USRP_GAIN_OFFSET;
if (UE->UE_scan_carrier == 1) {
if (freq_offset >= 0)
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] += abs(UE->common_vars.freq_offset);
else
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] -= abs(UE->common_vars.freq_offset);
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] =
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i]+uplink_frequency_offset[CC_id][i];
downlink_frequency[CC_id][i] = openair0_cfg[CC_id].rx_freq[i];
freq_offset=0;
}
}
// reconfigure for potentially different bandwidth
switch(UE->frame_parms.N_RB_DL) {
case 6:
openair0_cfg[UE->rf_map.card].sample_rate =1.92e6;
openair0_cfg[UE->rf_map.card].rx_bw =.96e6;
openair0_cfg[UE->rf_map.card].tx_bw =.96e6;
// openair0_cfg[0].rx_gain[0] -= 12;
break;
case 25:
openair0_cfg[UE->rf_map.card].sample_rate =7.68e6;
openair0_cfg[UE->rf_map.card].rx_bw =2.5e6;
openair0_cfg[UE->rf_map.card].tx_bw =2.5e6;
// openair0_cfg[0].rx_gain[0] -= 6;
break;
case 50:
openair0_cfg[UE->rf_map.card].sample_rate =15.36e6;
openair0_cfg[UE->rf_map.card].rx_bw =5.0e6;
openair0_cfg[UE->rf_map.card].tx_bw =5.0e6;
// openair0_cfg[0].rx_gain[0] -= 3;
break;
case 100:
openair0_cfg[UE->rf_map.card].sample_rate=30.72e6;
openair0_cfg[UE->rf_map.card].rx_bw=10.0e6;
openair0_cfg[UE->rf_map.card].tx_bw=10.0e6;
// openair0_cfg[0].rx_gain[0] -= 0;
break;
}
UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
//UE->rfdevice.trx_set_gains_func(&openair0,&openair0_cfg[0]);
//UE->rfdevice.trx_stop_func(&UE->rfdevice);
sleep(1);
init_frame_parms(&UE->frame_parms,1);
/*if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) {
LOG_E(HW,"Could not start the device\n");
oai_exit=1;
}*/
if (UE->UE_scan_carrier == 1) {
UE->UE_scan_carrier = 0;
} else {
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
UE->is_synchronized = 1;
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
if( UE->mode == rx_dump_frame ) {
FILE *fd;
if ((UE->proc.proc_rxtx[0].frame_rx&1) == 0) { // this guarantees SIB1 is present
if ((fd = fopen("rxsig_frame0.dat","w")) != NULL) {
fwrite((void*)&UE->common_vars.rxdata[0][0],
sizeof(int32_t),
10*UE->frame_parms.samples_per_tti,
fd);
LOG_I(PHY,"Dummping Frame ... bye bye \n");
fclose(fd);
exit(0);
} else {
LOG_E(PHY,"Cannot open file for writing\n");
exit(0);
}
} else {
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
UE->is_synchronized = 0;
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
}
}
}
} else {
// initial sync failed
// calculate new offset and try again
if (UE->UE_scan_carrier == 1) {
if (freq_offset >= 0)
freq_offset += 100;
freq_offset *= -1;
if (abs(freq_offset) > 7500) {
LOG_I( PHY, "[initial_sync] No cell synchronization found, abandoning\n" );
FILE *fd;
if ((fd = fopen("rxsig_frame0.dat","w"))!=NULL) {
fwrite((void*)&UE->common_vars.rxdata[0][0],
sizeof(int32_t),
10*UE->frame_parms.samples_per_tti,
fd);
LOG_I(PHY,"Dummping Frame ... bye bye \n");
fclose(fd);
exit(0);
}
AssertFatal(1==0,"No cell synchronization found, abandoning");
return &UE_thread_synch_retval; // not reached
}
}
#if DISABLE_LOG_X
printf("[initial_sync] trying carrier off %d Hz, rxgain %d (DL %u, UL %u)\n",
freq_offset,
UE->rx_total_gain_dB,
downlink_frequency[0][0]+freq_offset,
downlink_frequency[0][0]+uplink_frequency_offset[0][0]+freq_offset );
#else
LOG_I(PHY, "[initial_sync] trying carrier off %d Hz, rxgain %d (DL %u, UL %u)\n",
freq_offset,
UE->rx_total_gain_dB,
downlink_frequency[0][0]+freq_offset,
downlink_frequency[0][0]+uplink_frequency_offset[0][0]+freq_offset );
#endif
for (i=0; i<openair0_cfg[UE->rf_map.card].rx_num_channels; i++) {
openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = downlink_frequency[CC_id][i]+freq_offset;
openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] = downlink_frequency[CC_id][i]+uplink_frequency_offset[CC_id][i]+freq_offset;
openair0_cfg[UE->rf_map.card].rx_gain[UE->rf_map.chain+i] = UE->rx_total_gain_dB;//-USRP_GAIN_OFFSET;
if (UE->UE_scan_carrier==1)
openair0_cfg[UE->rf_map.card].autocal[UE->rf_map.chain+i] = 1;
}
UE->rfdevice.trx_set_freq_func(&UE->rfdevice,&openair0_cfg[0],0);
}// initial_sync=0
break;
case si:
default:
break;
}
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
// indicate readiness
UE->proc.instance_cnt_synch--;
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_UE_THREAD_SYNCH, 0 );
} // while !oai_exit
return &UE_thread_synch_retval;
}
/*!
* \brief This is the UE thread for RX subframe n and TX subframe n+4.
* This thread performs the phy_procedures_UE_RX() on every received slot.
* then, if TX is enabled it performs TX for n+4.
* \param arg is a pointer to a \ref PHY_VARS_UE structure.
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
const char * get_connectionloss_errstr(int errcode) {
switch (errcode) {
case CONNECTION_LOST:
return "RRC Connection lost, returning to PRACH";
case PHY_RESYNCH:
return "RRC Connection lost, trying to resynch";
case RESYNCH:
return "return to PRACH and perform a contention-free access";
};
return "UNKNOWN RETURN CODE";
}
static void *UE_thread_rxn_txnp4(void *arg) {
static __thread int UE_thread_rxtx_retval;
struct rx_tx_thread_data *rtd = arg;
UE_rxtx_proc_t *proc = rtd->proc;
PHY_VARS_UE *UE = rtd->UE;
proc->subframe_rx=proc->sub_frame_start;
char threadname[256];
sprintf(threadname,"UE_%d_proc_%d", UE->Mod_id, proc->sub_frame_start);
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
if ( (proc->sub_frame_start+1)%RX_NB_TH == 0 && threads.one != -1 )
CPU_SET(threads.one, &cpuset);
if ( (proc->sub_frame_start+1)%RX_NB_TH == 1 && threads.two != -1 )
CPU_SET(threads.two, &cpuset);
if ( (proc->sub_frame_start+1)%RX_NB_TH == 2 && threads.three != -1 )
CPU_SET(threads.three, &cpuset);
//CPU_SET(threads.three, &cpuset);
init_thread(900000,1000000 , FIFO_PRIORITY-1, &cpuset,
threadname);
while (!oai_exit) {
if (pthread_mutex_lock(&proc->mutex_rxtx) != 0) {
LOG_E( PHY, "[SCHED][UE] error locking mutex for UE RXTX\n" );
exit_fun("nothing to add");
}
while (proc->instance_cnt_rxtx < 0) {
// most of the time, the thread is waiting here
pthread_cond_wait( &proc->cond_rxtx, &proc->mutex_rxtx );
}
if (pthread_mutex_unlock(&proc->mutex_rxtx) != 0) {
LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE RXn_TXnp4\n" );
exit_fun("nothing to add");
}
initRefTimes(t2);
initRefTimes(t3);
pickTime(current);
updateTimes(proc->gotIQs, &t2, 10000, "Delay to wake up UE_Thread_Rx (case 2)");
// Process Rx data for one sub-frame
lte_subframe_t sf_type = subframe_select( &UE->frame_parms, proc->subframe_rx);
if ((sf_type == SF_DL) ||
(UE->frame_parms.frame_type == FDD) ||
(sf_type == SF_S)) {
if (UE->frame_parms.frame_type == TDD) {
LOG_D(PHY, "%s,TDD%d,%s: calling UE_RX\n",
threadname,
UE->frame_parms.tdd_config,
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
} else {
LOG_D(PHY, "%s,%s,%s: calling UE_RX\n",
threadname,
(UE->frame_parms.frame_type==FDD? "FDD":
(UE->frame_parms.frame_type==TDD? "TDD":"UNKNOWN_DUPLEX_MODE")),
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
}
#ifdef UE_SLOT_PARALLELISATION
phy_procedures_slot_parallelization_UE_RX( UE, proc, 0, 0, 1, UE->mode, no_relay, NULL );
#else
phy_procedures_UE_RX(UE, proc, 0, 0, 1, UE->mode);
#endif
}
#if UE_TIMING_TRACE
start_meas(&UE->generic_stat);
#endif
if (UE->mac_enabled==1) {
int ret = ue_scheduler(UE->Mod_id,
proc->frame_rx,
proc->subframe_rx,
proc->frame_tx,
proc->subframe_tx,
subframe_select(&UE->frame_parms,proc->subframe_tx),
0,
0/*FIXME CC_id*/);
if ( ret != CONNECTION_OK) {
LOG_E( PHY, "[UE %"PRIu8"] Frame %"PRIu32", subframe %u %s\n",
UE->Mod_id, proc->frame_rx, proc->subframe_tx,get_connectionloss_errstr(ret) );
}
}
#if UE_TIMING_TRACE
stop_meas(&UE->generic_stat);
#endif
// Prepare the future Tx data
if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_UL) ||
(UE->frame_parms.frame_type == FDD) )
if (UE->mode != loop_through_memory)
phy_procedures_UE_TX(UE,proc,0,0,UE->mode);
if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_S) &&
(UE->frame_parms.frame_type == TDD))
if (UE->mode != loop_through_memory)
phy_procedures_UE_S_TX(UE,0,0);
updateTimes(current, &t3, 10000, "Delay to process sub-frame (case 3)");
if (pthread_mutex_lock(&proc->mutex_rxtx) != 0) {
LOG_E( PHY, "[SCHED][UE] error locking mutex for UE RXTX\n" );
exit_fun("noting to add");
}
proc->instance_cnt_rxtx--;
#if BASIC_SIMULATOR
if (pthread_cond_signal(&proc->cond_rxtx) != 0) abort();
#endif
if (pthread_mutex_unlock(&proc->mutex_rxtx) != 0) {
LOG_E( PHY, "[SCHED][UE] error unlocking mutex for UE RXTX\n" );
exit_fun("noting to add");
}
}
// thread finished
free(arg);
return &UE_thread_rxtx_retval;
}
unsigned int emulator_absSF;
void ue_stub_rx_handler(unsigned int num_bytes, char *rx_buffer) {
PHY_VARS_UE *UE;
UE = PHY_vars_UE_g[0][0];
UE_tport_t *pdu = (UE_tport_t*)rx_buffer;
SLSCH_t *slsch = (SLSCH_t*)&pdu->slsch;
SLDCH_t *sldch = (SLDCH_t*)&pdu->sldch;
switch (((UE_tport_header_t*)rx_buffer)->packet_type) {
case TTI_SYNC:
emulator_absSF = ((UE_tport_header_t*)rx_buffer)->absSF;
wakeup_thread(&UE->timer_mutex,&UE->timer_cond,&UE->instance_cnt_timer,"timer_thread");
break;
case SLSCH:
LOG_I(PHY,"Emulator SFN.SF %d.%d, Got SLSCH packet\n",emulator_absSF/10,emulator_absSF%10);
LOG_I(PHY,"Received %d bytes on UE-UE link for SFN.SF %d.%d, sending SLSCH payload (%d bytes) to MAC\n",num_bytes,
pdu->header.absSF/10,pdu->header.absSF%10,
slsch->payload_length);
printf("SLSCH:");
for (int i=0;i<sizeof(SLSCH_t);i++) printf("%x ",((uint8_t*)slsch)[i]);
printf("\n");
ue_send_sl_sdu(0,
0,
pdu->header.absSF/10,
pdu->header.absSF%10,
pdu->payload,
slsch->payload_length,
0,
SL_DISCOVERY_FLAG_NO);
break;
case SLDCH:
LOG_I(PHY,"Emulator SFN.SF %d.%d, Got SLDCH packet\n",emulator_absSF/10,emulator_absSF%10);
LOG_I(PHY,"Received %d bytes on UE-UE link for SFN.SF %d.%d, sending SLDCH payload (%d bytes) to MAC\n",num_bytes,
pdu->header.absSF/10,pdu->header.absSF%10,
sldch->payload_length);
printf("SLDCH:");
for (int i=0;i<sizeof(SLDCH_t);i++) printf("%x ",((uint8_t*)sldch)[i]);
printf("\n");
ue_send_sl_sdu(0,
0,
pdu->header.absSF/10,
pdu->header.absSF%10,
sldch->payload,
sldch->payload_length,
0,
SL_DISCOVERY_FLAG_YES);
break;
}
}
/*!
* \brief This is the UE thread for RX subframe n and TX subframe n+4.
* This thread performs the phy_procedures_UE_RX() on every received slot.
* then, if TX is enabled it performs TX for n+4.
* \param arg is a pointer to a \ref PHY_VARS_UE structure.
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
static void *UE_phy_stub_single_thread_rxn_txnp4(void *arg) {
thread_top_init("UE_phy_stub_thread_rxn_txnp4",1,870000L,1000000L,1000000L);
module_id_t Mod_id = 0;
//int init_ra_UE = -1; // This counter is used to initiate the RA of each UE in different SFrames
static __thread int UE_thread_rxtx_retval;
struct rx_tx_thread_data *rtd = arg;
UE_rxtx_proc_t *proc = rtd->proc;
// Initializations for nfapi-L2-emulator mode
dl_config_req = NULL;
ul_config_req = NULL;
hi_dci0_req = NULL;
tx_request_pdu_list = NULL;
PHY_VARS_UE *UE; //= rtd->UE;
int ret;
phy_stub_ticking->ticking_var = -1;
proc->subframe_rx=proc->sub_frame_start;
//PANOS: CAREFUL HERE!
wait_sync("UE_phy_stub_single_thread_rxn_txnp4");
while (!oai_exit) {
if (pthread_mutex_lock(&phy_stub_ticking->mutex_ticking) != 0) {
LOG_E( MAC, "[SCHED][UE] error locking mutex for UE RXTX\n" );
exit_fun("nothing to add");
}
while (phy_stub_ticking->ticking_var < 0) {
// most of the time, the thread is waiting here
//pthread_cond_wait( &proc->cond_rxtx, &proc->mutex_rxtx )
LOG_D(MAC,"Waiting for ticking_var\n");
pthread_cond_wait( &phy_stub_ticking->cond_ticking, &phy_stub_ticking->mutex_ticking);
}
phy_stub_ticking->ticking_var--;
if (pthread_mutex_unlock(&phy_stub_ticking->mutex_ticking) != 0) {
LOG_E( MAC, "[SCHED][UE] error unlocking mutex for UE RXn_TXnp4\n" );
exit_fun("nothing to add");
}
proc->subframe_rx=timer_subframe;
proc->frame_rx = timer_frame;
proc->subframe_tx=(timer_subframe+4)%10;
proc->frame_tx = proc->frame_rx + (proc->subframe_rx>5?1:0);
//oai_subframe_ind(proc->frame_rx, proc->subframe_rx);
oai_subframe_ind(timer_frame, timer_subframe);
//Guessing that the next 4 lines are not needed for the phy_stub mode.
/*initRefTimes(t2);
initRefTimes(t3);
pickTime(current);
updateTimes(proc->gotIQs, &t2, 10000, "Delay to wake up UE_Thread_Rx (case 2)");*/
// Not sure whether we should put the memory allocation here and not sure how much memory
//we should allocate for each subframe cycle.
UL_INFO = (UL_IND_t*)malloc(sizeof(UL_IND_t));
UL_INFO->rx_ind.rx_indication_body.rx_pdu_list = (nfapi_rx_indication_pdu_t*)malloc(NB_UE_INST*sizeof(nfapi_rx_indication_pdu_t));
UL_INFO->rx_ind.rx_indication_body.number_of_pdus = 0;
UL_INFO->crc_ind.crc_indication_body.crc_pdu_list = (nfapi_crc_indication_pdu_t*)malloc(NB_UE_INST*sizeof(nfapi_crc_indication_pdu_t));
UL_INFO->crc_ind.crc_indication_body.number_of_crcs = 0;
UL_INFO->harq_ind.harq_indication_body.harq_pdu_list = (nfapi_harq_indication_pdu_t*)malloc(NB_UE_INST*sizeof(nfapi_harq_indication_pdu_t));
UL_INFO->harq_ind.harq_indication_body.number_of_harqs = 0;
UL_INFO->sr_ind.sr_indication_body.sr_pdu_list = (nfapi_sr_indication_pdu_t*)malloc(NB_UE_INST*sizeof(nfapi_sr_indication_pdu_t));
UL_INFO->sr_ind.sr_indication_body.number_of_srs = 0;
for (Mod_id=0; Mod_id<NB_UE_INST; Mod_id++) {
//LOG_D(MAC, "UE_phy_stub_single_thread_rxn_txnp4, NB_UE_INST:%d, Mod_id:%d \n", NB_UE_INST, Mod_id);
UE = PHY_vars_UE_g[Mod_id][0];
lte_subframe_t sf_type = subframe_select( &UE->frame_parms, proc->subframe_rx);
if ((sf_type == SF_DL) ||
(UE->frame_parms.frame_type == FDD) ||
(sf_type == SF_S)) {
if (UE->frame_parms.frame_type == TDD) {
LOG_D(PHY, "TDD%d,%s: calling UE_RX\n",
UE->frame_parms.tdd_config,
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
} else {
LOG_D(PHY, "%s,%s: calling UE_RX\n",
(UE->frame_parms.frame_type==FDD? "FDD":
(UE->frame_parms.frame_type==TDD? "TDD":"UNKNOWN_DUPLEX_MODE")),
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
}
phy_procedures_UE_SL_RX(UE,proc);
if (dl_config_req!=NULL && tx_request_pdu_list!=NULL){
//if(dl_config_req!= NULL) {
dl_config_req_UE_MAC(dl_config_req, Mod_id);
}
if (hi_dci0_req!=NULL && hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list!=NULL){
hi_dci0_req_UE_MAC(hi_dci0_req, Mod_id);
}
if(nfapi_mode!=3)
phy_procedures_UE_SL_TX(UE,proc);
}
#if UE_TIMING_TRACE
start_meas(&UE->generic_stat);
#endif
if (UE->mac_enabled==1) {
ret = ue_scheduler(UE->Mod_id,
proc->frame_rx,
proc->subframe_rx,
proc->frame_tx,
proc->subframe_tx,
subframe_select(&UE->frame_parms,proc->subframe_tx),
0,
0/*FIXME CC_id*/);
if ( ret != CONNECTION_OK) {
LOG_E( PHY, "[UE %"PRIu8"] Frame %"PRIu32", subframe %u %s\n",
UE->Mod_id, proc->frame_rx, proc->subframe_tx,get_connectionloss_errstr(ret) );
}
}
#if UE_TIMING_TRACE
stop_meas(&UE->generic_stat);
#endif
// Prepare the future Tx data
if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_UL) ||
(UE->frame_parms.frame_type == FDD) )
if (UE->mode != loop_through_memory){
// We make the start of RA between consecutive UEs differ by 20 frames
//if ((UE_mac_inst[Mod_id].UE_mode[0] == PRACH && Mod_id == 0) || (UE_mac_inst[Mod_id].UE_mode[0] == PRACH && Mod_id>0 && proc->frame_rx >= UE_mac_inst[Mod_id-1].ra_frame + 20) ) {
if (UE_mac_inst[Mod_id].UE_mode[0] == PRACH && Mod_id == next_Mod_id && proc->frame_rx >= next_ra_frame) {
// check if we have PRACH opportunity
if (is_prach_subframe(&UE->frame_parms,proc->frame_tx, proc->subframe_tx) && UE_mac_inst[Mod_id].SI_Decoded == 1) {
// The one working strangely...
//if (is_prach_subframe(&UE->frame_parms,proc->frame_tx, proc->subframe_tx && Mod_id == (module_id_t) init_ra_UE) ) {
PRACH_RESOURCES_t *prach_resources = ue_get_rach(Mod_id, 0, proc->frame_tx, 0, proc->subframe_tx);
if(prach_resources!=NULL ) {
UE_mac_inst[Mod_id].ra_frame = proc->frame_rx;
LOG_D(MAC, "UE_phy_stub_thread_rxn_txnp4 before RACH, Mod_id: %d \n", Mod_id );
fill_rach_indication_UE_MAC(Mod_id, proc->frame_tx ,proc->subframe_tx, UL_INFO, prach_resources->ra_PreambleIndex, prach_resources->ra_RNTI);
Msg1_transmitted(Mod_id, 0, proc->frame_tx, 0);
UE_mac_inst[Mod_id].UE_mode[0] = RA_RESPONSE;
next_Mod_id = Mod_id + 1;
next_ra_frame = (proc->frame_rx + 20)%1000;
}
//ue_prach_procedures(ue,proc,eNB_id,abstraction_flag,mode);
}
} // mode is PRACH
// Substitute call to phy_procedures Tx with call to phy_stub functions in order to trigger
// UE Tx procedures directly at the MAC layer, based on the received ul_config requests from the vnf (eNB).
// Generate UL_indications which correspond to UL traffic.
if(ul_config_req!=NULL){ //&& UE_mac_inst[Mod_id].ul_config_req->ul_config_request_body.ul_config_pdu_list != NULL){
ul_config_req_UE_MAC(ul_config_req, timer_frame, timer_subframe, Mod_id);
}
}
phy_procedures_UE_SL_RX(UE,proc);
} //for (Mod_id=0; Mod_id<NB_UE_INST; Mod_id++)
if (UL_INFO->crc_ind.crc_indication_body.number_of_crcs>0)
{
//LOG_D(PHY,"UL_info->crc_ind.crc_indication_body.number_of_crcs:%d CRC_IND:SFN/SF:%d\n", UL_info->crc_ind.crc_indication_body.number_of_crcs, NFAPI_SFNSF2DEC(UL_info->crc_ind.sfn_sf));
//LOG_I(MAC, "ul_config_req_UE_MAC 2.2, SFN/SF of PNF counter:%d.%d, number_of_crcs: %d \n", timer_frame, timer_subframe, UL_INFO->crc_ind.crc_indication_body.number_of_crcs);
oai_nfapi_crc_indication(&UL_INFO->crc_ind);
//LOG_I(MAC, "ul_config_req_UE_MAC 2.21 \n");
UL_INFO->crc_ind.crc_indication_body.number_of_crcs = 0;
}
if (UL_INFO->rx_ind.rx_indication_body.number_of_pdus>0)
{
//LOG_D(PHY,"UL_info->rx_ind.number_of_pdus:%d RX_IND:SFN/SF:%d\n", UL_info->rx_ind.rx_indication_body.number_of_pdus, NFAPI_SFNSF2DEC(UL_info->rx_ind.sfn_sf));
//LOG_I(MAC, "ul_config_req_UE_MAC 2.3, SFN/SF of PNF counter:%d.%d, number_of_pdus: %d \n", timer_frame, timer_subframe, UL_INFO->rx_ind.rx_indication_body.number_of_pdus);
oai_nfapi_rx_ind(&UL_INFO->rx_ind);
//LOG_I(MAC, "ul_config_req_UE_MAC 2.31 \n");
UL_INFO->rx_ind.rx_indication_body.number_of_pdus = 0;
}
if(UL_INFO->harq_ind.harq_indication_body.number_of_harqs>0)
{
//LOG_D(MAC, "ul_config_req_UE_MAC 2.4, SFN/SF of PNF counter:%d.%d, number_of_harqs: %d \n", timer_frame, timer_subframe, UL_INFO->harq_ind.harq_indication_body.number_of_harqs);
oai_nfapi_harq_indication(&UL_INFO->harq_ind);
//LOG_I(MAC, "ul_config_req_UE_MAC 2.41 \n");
UL_INFO->harq_ind.harq_indication_body.number_of_harqs =0;
}
if(UL_INFO->sr_ind.sr_indication_body.number_of_srs>0)
{
//LOG_I(MAC, "ul_config_req_UE_MAC 2.5, SFN/SF of PNF counter:%d.%d, number_of_srs: %d \n", timer_frame, timer_subframe, UL_INFO->sr_ind.sr_indication_body.number_of_srs);
oai_nfapi_sr_indication(&UL_INFO->sr_ind);
//LOG_I(MAC, "ul_config_req_UE_MAC 2.51 \n");
UL_INFO->sr_ind.sr_indication_body.number_of_srs = 0;
}
// Free UL_INFO messages
//if(UL_INFO->crc_ind.crc_indication_body.crc_pdu_list != NULL){
free(UL_INFO->crc_ind.crc_indication_body.crc_pdu_list);
UL_INFO->crc_ind.crc_indication_body.crc_pdu_list = NULL;
//}
//if(UL_INFO->rx_ind.rx_indication_body.rx_pdu_list != NULL){
free(UL_INFO->rx_ind.rx_indication_body.rx_pdu_list);
UL_INFO->rx_ind.rx_indication_body.rx_pdu_list = NULL;
//}
//if(UL_INFO->harq_ind.harq_indication_body.harq_pdu_list !=NULL){
free(UL_INFO->harq_ind.harq_indication_body.harq_pdu_list);
UL_INFO->harq_ind.harq_indication_body.harq_pdu_list = NULL;
//}
//if(UL_INFO->sr_ind.sr_indication_body.sr_pdu_list!=NULL){
free(UL_INFO->sr_ind.sr_indication_body.sr_pdu_list);
UL_INFO->sr_ind.sr_indication_body.sr_pdu_list = NULL;
//}
free(UL_INFO);
UL_INFO = NULL;
// De-allocate memory of nfapi requests copies before next subframe round
if(dl_config_req!=NULL){
if(dl_config_req->vendor_extension)
free(dl_config_req->vendor_extension);
if(dl_config_req->dl_config_request_body.dl_config_pdu_list!=NULL){
free(dl_config_req->dl_config_request_body.dl_config_pdu_list);
dl_config_req->dl_config_request_body.dl_config_pdu_list = NULL;
}
free(dl_config_req);
dl_config_req = NULL;
}
if(tx_request_pdu_list!=NULL){
free(tx_request_pdu_list);
tx_request_pdu_list = NULL;
}
if(ul_config_req!=NULL){
if(ul_config_req->ul_config_request_body.ul_config_pdu_list != NULL){
free(ul_config_req->ul_config_request_body.ul_config_pdu_list);
ul_config_req->ul_config_request_body.ul_config_pdu_list = NULL;
}
free(ul_config_req);
ul_config_req = NULL;
}
if(hi_dci0_req!=NULL){
if(hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list!=NULL){
free(hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list);
hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list = NULL;
}
free(hi_dci0_req);
hi_dci0_req = NULL;
}
}
// thread finished
free(arg);
return &UE_thread_rxtx_retval;
}
/*!
* \brief This is the UE thread for RX subframe n and TX subframe n+4.
* This thread performs the phy_procedures_UE_RX() on every received slot.
* then, if TX is enabled it performs TX for n+4.
* \param arg is a pointer to a \ref PHY_VARS_UE structure.
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
static void *UE_phy_stub_thread_rxn_txnp4(void *arg) {
thread_top_init("UE_phy_stub_thread_rxn_txnp4",1,870000L,1000000L,1000000L);
module_id_t Mod_id = 0;
static __thread int UE_thread_rxtx_retval;
struct rx_tx_thread_data *rtd = arg;
UE_rxtx_proc_t *proc = rtd->proc;
PHY_VARS_UE *UE = rtd->UE;
phy_stub_ticking->ticking_var = -1;
proc->subframe_rx=proc->sub_frame_start;
// CAREFUL HERE!
wait_sync("UE_phy_stub_thread_rxn_txnp4");
while (!oai_exit) {
if (pthread_mutex_lock(&phy_stub_ticking->mutex_ticking) != 0) {
LOG_E( MAC, "[SCHED][UE] error locking mutex for UE RXTX\n" );
exit_fun("nothing to add");
}
while (phy_stub_ticking->ticking_var < 0) {
// most of the time, the thread is waiting here
//pthread_cond_wait( &proc->cond_rxtx, &proc->mutex_rxtx )
LOG_D(MAC,"Waiting for ticking_var\n");
pthread_cond_wait( &phy_stub_ticking->cond_ticking, &phy_stub_ticking->mutex_ticking);
}
phy_stub_ticking->ticking_var--;
if (pthread_mutex_unlock(&phy_stub_ticking->mutex_ticking) != 0) {
LOG_E( MAC, "[SCHED][UE] error unlocking mutex for UE RXn_TXnp4\n" );
exit_fun("nothing to add");
}
proc->subframe_rx=timer_subframe;
proc->frame_rx = timer_frame;
proc->subframe_tx=(timer_subframe+4)%10;
proc->frame_tx = proc->frame_rx + (proc->subframe_rx>5?1:0);
// Process Rx data for one sub-frame
lte_subframe_t sf_type = subframe_select( &UE->frame_parms, proc->subframe_rx);
if ((sf_type == SF_DL) ||
(UE->frame_parms.frame_type == FDD) ||
(sf_type == SF_S)) {
if (UE->frame_parms.frame_type == TDD) {
LOG_D(PHY, "TDD%d,%s: calling UE_RX\n",
UE->frame_parms.tdd_config,
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
} else {
LOG_D(PHY, "%s,%s: calling UE_RX\n",
(UE->frame_parms.frame_type==FDD? "FDD":
(UE->frame_parms.frame_type==TDD? "TDD":"UNKNOWN_DUPLEX_MODE")),
(sf_type==SF_DL? "SF_DL" :
(sf_type==SF_UL? "SF_UL" :
(sf_type==SF_S ? "SF_S" : "UNKNOWN_SF_TYPE"))));
}
phy_procedures_UE_SL_RX(UE,proc);
oai_subframe_ind(timer_frame, timer_subframe);
if(dl_config_req!= NULL) {
dl_config_req_UE_MAC(dl_config_req, Mod_id);
}
//if(UE_mac_inst[Mod_id].hi_dci0_req!= NULL){
if (hi_dci0_req!=NULL && hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list!=NULL){
hi_dci0_req_UE_MAC(hi_dci0_req, Mod_id);
//if(UE_mac_inst[Mod_id].hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list!=NULL){
free(hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list);
hi_dci0_req->hi_dci0_request_body.hi_dci0_pdu_list = NULL;
//}
free(hi_dci0_req);
hi_dci0_req = NULL;
}
else if(hi_dci0_req!=NULL){
free(hi_dci0_req);
hi_dci0_req = NULL;
}
if (nfapi_mode != 3)
phy_procedures_UE_SL_TX(UE,proc);
}
#if UE_TIMING_TRACE
start_meas(&UE->generic_stat);
#endif
if (UE->mac_enabled==1) {
int ret = ue_scheduler(UE->Mod_id,
proc->frame_rx,
proc->subframe_rx,
proc->frame_tx,
proc->subframe_tx,
subframe_select(&UE->frame_parms,proc->subframe_tx),
0,
0);
if (ret != CONNECTION_OK)
LOG_E( PHY, "[UE %"PRIu8"] Frame %"PRIu32", subframe %u %s\n",
UE->Mod_id, proc->frame_rx, proc->subframe_tx,get_connectionloss_errstr(ret) );
}
#if UE_TIMING_TRACE
stop_meas(&UE->generic_stat);
#endif
// Prepare the future Tx data
if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_UL) ||
(UE->frame_parms.frame_type == FDD) )
if (UE->mode != loop_through_memory){
if ((UE_mac_inst[Mod_id].UE_mode[0] == PRACH) ) {
// check if we have PRACH opportunity
if (is_prach_subframe(&UE->frame_parms,proc->frame_tx, proc->subframe_tx)) {
PRACH_RESOURCES_t *prach_resources = ue_get_rach(Mod_id, 0, proc->frame_tx, 0, proc->subframe_tx);
if(prach_resources!=NULL) {
fill_rach_indication_UE_MAC(Mod_id, proc->frame_tx ,proc->subframe_tx, UL_INFO, prach_resources->ra_PreambleIndex, prach_resources->ra_RNTI);
Msg1_transmitted(Mod_id, 0, proc->frame_tx, 0);
UE_mac_inst[Mod_id].UE_mode[0] = RA_RESPONSE;
}
//ue_prach_procedures(ue,proc,eNB_id,abstraction_flag,mode);
}
} // mode is PRACH
// Substitute call to phy_procedures Tx with call to phy_stub functions in order to trigger
// UE Tx procedures directly at the MAC layer, based on the received ul_config requests from the vnf (eNB).
// Generate UL_indications which correspond to UL traffic.
if(ul_config_req!= NULL && ul_config_req->ul_config_request_body.ul_config_pdu_list != NULL){
//LOG_I(MAC, "UE_phy_stub_thread_rxn_txnp4 ul_config_req is not NULL \n");
ul_config_req_UE_MAC(ul_config_req, timer_frame, timer_subframe, Mod_id);
if(ul_config_req->ul_config_request_body.ul_config_pdu_list != NULL){
free(ul_config_req->ul_config_request_body.ul_config_pdu_list);
ul_config_req->ul_config_request_body.ul_config_pdu_list = NULL;
}
free(ul_config_req);
ul_config_req = NULL;
}
else if(ul_config_req!=NULL){
free(ul_config_req);
ul_config_req = NULL;
}
}
phy_procedures_UE_SL_RX(UE,proc);
}
// thread finished
free(arg);
return &UE_thread_rxtx_retval;
}
/*!
* \brief This is the main UE thread.
* This thread controls the other three UE threads:
* - UE_thread_rxn_txnp4 (even subframes)
* - UE_thread_rxn_txnp4 (odd subframes)
* - UE_thread_synch
* \param arg unused
* \returns a pointer to an int. The storage is not on the heap and must not be freed.
*/
void *UE_thread(void *arg) {
PHY_VARS_UE *UE = (PHY_VARS_UE *) arg;
// int tx_enabled = 0;
int dummy_rx[UE->frame_parms.nb_antennas_rx][UE->frame_parms.samples_per_tti] __attribute__((aligned(32)));
openair0_timestamp timestamp,timestamp1;
void* rxp[NB_ANTENNAS_RX], *txp[NB_ANTENNAS_TX];
int start_rx_stream = 0;
int i;
int th_id;
static uint8_t thread_idx = 0;
cpu_set_t cpuset;
CPU_ZERO(&cpuset);
if ( threads.iq != -1 )
CPU_SET(threads.iq, &cpuset);
init_thread(100000, 500000, FIFO_PRIORITY, &cpuset,
"UHD Threads");
/*
while (sync_var<0)
pthread_cond_wait(&sync_cond, &sync_mutex);
pthread_mutex_unlock(&sync_mutex);
*/
wait_sync("UE thread");
#ifdef NAS_UE
MessageDef *message_p;
message_p = itti_alloc_new_message(TASK_NAS_UE, INITIALIZE_MESSAGE);
itti_send_msg_to_task (TASK_NAS_UE, UE->Mod_id + NB_eNB_INST, message_p);
#endif
int sub_frame=-1;
//int cumulated_shift=0;
if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) {
LOG_E(HW,"Could not start the device\n");
oai_exit=1;
}
while (!oai_exit) {
#if BASIC_SIMULATOR
while (!(UE->proc.instance_cnt_synch < 0)) {
printf("ue sync not ready\n");
usleep(500*1000);
}
#endif
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
int instance_cnt_synch = UE->proc.instance_cnt_synch;
int is_synchronized = UE->is_synchronized;
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
if (is_synchronized == 0) {
if (instance_cnt_synch < 0) { // we can invoke the synch
// grab 10 ms of signal and wakeup synch thread
for (int i=0; i<UE->frame_parms.nb_antennas_rx; i++)
rxp[i] = (void*)&UE->common_vars.rxdata[i][0];
if (UE->mode != loop_through_memory)
AssertFatal( UE->frame_parms.samples_per_tti*10 ==
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
rxp,
UE->frame_parms.samples_per_tti*10,
UE->frame_parms.nb_antennas_rx), "");
AssertFatal ( 0== pthread_mutex_lock(&UE->proc.mutex_synch), "");
instance_cnt_synch = ++UE->proc.instance_cnt_synch;
if (instance_cnt_synch == 0) {
AssertFatal( 0 == pthread_cond_signal(&UE->proc.cond_synch), "");
} else {
LOG_E( PHY, "[SCHED][UE] UE sync thread busy!!\n" );
exit_fun("nothing to add");
}
AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
} else {
#if OAISIM
(void)dummy_rx; /* avoid gcc warnings */
usleep(500);
#else
// grab 10 ms of signal into dummy buffer
if (UE->mode != loop_through_memory) {
for (int i=0; i<UE->frame_parms.nb_antennas_rx; i++)
rxp[i] = (void*)&dummy_rx[i][0];
for (int sf=0; sf<10; sf++)
// printf("Reading dummy sf %d\n",sf);
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
rxp,
UE->frame_parms.samples_per_tti,
UE->frame_parms.nb_antennas_rx);
}
#endif
}
} // UE->is_synchronized==0
else {
if (start_rx_stream==0) {
start_rx_stream=1;
if (UE->mode != loop_through_memory) {
if (UE->no_timing_correction==0) {
LOG_I(PHY,"Resynchronizing RX by %d samples (mode = %d)\n",UE->rx_offset,UE->mode);
AssertFatal(UE->rx_offset ==
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
(void**)UE->common_vars.rxdata,
UE->rx_offset,
UE->frame_parms.nb_antennas_rx),"");
}
UE->rx_offset=0;
UE->time_sync_cell=0;
//UE->proc.proc_rxtx[0].frame_rx++;
//UE->proc.proc_rxtx[1].frame_rx++;
for (th_id=0; th_id < RX_NB_TH; th_id++) {
UE->proc.proc_rxtx[th_id].frame_rx++;
}
// read in first symbol
AssertFatal (UE->frame_parms.ofdm_symbol_size+UE->frame_parms.nb_prefix_samples0 ==
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
(void**)UE->common_vars.rxdata,
UE->frame_parms.ofdm_symbol_size+UE->frame_parms.nb_prefix_samples0,
UE->frame_parms.nb_antennas_rx),"");
slot_fep(UE,0, 0, 0, 0, 0);
} //UE->mode != loop_through_memory
else
rt_sleep_ns(1000*1000);
} else {
sub_frame++;
sub_frame%=10;
UE_rxtx_proc_t *proc = &UE->proc.proc_rxtx[thread_idx];
// update thread index for received subframe
UE->current_thread_id[sub_frame] = thread_idx;
#if BASIC_SIMULATOR
{
int t;
for (t = 0; t < 2; t++) {
UE_rxtx_proc_t *proc = &UE->proc.proc_rxtx[t];
pthread_mutex_lock(&proc->mutex_rxtx);
while (proc->instance_cnt_rxtx >= 0) pthread_cond_wait( &proc->cond_rxtx, &proc->mutex_rxtx );
pthread_mutex_unlock(&proc->mutex_rxtx);
}
}
#endif
LOG_D(PHY,"Process Subframe %d thread Idx %d \n", sub_frame, UE->current_thread_id[sub_frame]);
thread_idx++;
if(thread_idx>=RX_NB_TH)
thread_idx = 0;
if (UE->mode != loop_through_memory) {
for (i=0; i<UE->frame_parms.nb_antennas_rx; i++)
rxp[i] = (void*)&UE->common_vars.rxdata[i][UE->frame_parms.ofdm_symbol_size+
UE->frame_parms.nb_prefix_samples0+
sub_frame*UE->frame_parms.samples_per_tti];
for (i=0; i<UE->frame_parms.nb_antennas_tx; i++)
txp[i] = (void*)&UE->common_vars.txdata[i][((sub_frame+2)%10)*UE->frame_parms.samples_per_tti];
int readBlockSize, writeBlockSize;
if (sub_frame<9) {
readBlockSize=UE->frame_parms.samples_per_tti;
writeBlockSize=UE->frame_parms.samples_per_tti;
} else {
// set TO compensation to zero
UE->rx_offset_diff = 0;
// compute TO compensation that should be applied for this frame
if (UE->no_timing_correction == 0) {
if ( UE->rx_offset < 5*UE->frame_parms.samples_per_tti &&
UE->rx_offset > 0 )
UE->rx_offset_diff = -1 ;
if ( UE->rx_offset > 5*UE->frame_parms.samples_per_tti &&
UE->rx_offset < 10*UE->frame_parms.samples_per_tti )
UE->rx_offset_diff = 1;
}
LOG_D(PHY,"AbsSubframe %d.%d SET rx_off_diff to %d rx_offset %d \n",proc->frame_rx,sub_frame,UE->rx_offset_diff,UE->rx_offset);
readBlockSize=UE->frame_parms.samples_per_tti -
UE->frame_parms.ofdm_symbol_size -
UE->frame_parms.nb_prefix_samples0 -
UE->rx_offset_diff;
writeBlockSize=UE->frame_parms.samples_per_tti -
UE->rx_offset_diff;
}
AssertFatal(readBlockSize ==
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
rxp,
readBlockSize,
UE->frame_parms.nb_antennas_rx),"");
AssertFatal( writeBlockSize ==
UE->rfdevice.trx_write_func(&UE->rfdevice,
timestamp+
(2*UE->frame_parms.samples_per_tti) -
UE->frame_parms.ofdm_symbol_size-UE->frame_parms.nb_prefix_samples0 -
openair0_cfg[0].tx_sample_advance,
txp,
writeBlockSize,
UE->frame_parms.nb_antennas_tx,
1),"");
if( sub_frame==9) {
// read in first symbol of next frame and adjust for timing drift
int first_symbols=writeBlockSize-readBlockSize;
if ( first_symbols > 0 )
AssertFatal(first_symbols ==
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp1,
(void**)UE->common_vars.rxdata,
first_symbols,
UE->frame_parms.nb_antennas_rx),"");
if ( first_symbols <0 )
LOG_E(PHY,"can't compensate: diff =%d\n", first_symbols);
}
pickTime(gotIQs);
// operate on thread sf mod 2
AssertFatal(pthread_mutex_lock(&proc->mutex_rxtx) ==0,"");
if(sub_frame == 0) {
//UE->proc.proc_rxtx[0].frame_rx++;
//UE->proc.proc_rxtx[1].frame_rx++;
for (th_id=0; th_id < RX_NB_TH; th_id++) {
UE->proc.proc_rxtx[th_id].frame_rx++;
}
}
//UE->proc.proc_rxtx[0].gotIQs=readTime(gotIQs);
//UE->proc.proc_rxtx[1].gotIQs=readTime(gotIQs);
for (th_id=0; th_id < RX_NB_TH; th_id++) {
UE->proc.proc_rxtx[th_id].gotIQs=readTime(gotIQs);
}
proc->subframe_rx=sub_frame;
proc->subframe_tx=(sub_frame+4)%10;
proc->frame_tx = proc->frame_rx + (proc->subframe_rx>5?1:0);
proc->timestamp_tx = timestamp+
(4*UE->frame_parms.samples_per_tti)-
UE->frame_parms.ofdm_symbol_size-UE->frame_parms.nb_prefix_samples0;
proc->instance_cnt_rxtx++;
LOG_D( PHY, "[SCHED][UE %d] UE RX instance_cnt_rxtx %d subframe %d !!\n", UE->Mod_id, proc->instance_cnt_rxtx,proc->subframe_rx);
if (proc->instance_cnt_rxtx != 0) {
LOG_E( PHY, "[SCHED][UE %d] UE RX thread busy (IC %d)!!\n", UE->Mod_id, proc->instance_cnt_rxtx);
if (proc->instance_cnt_rxtx > 2)
exit_fun("instance_cnt_rxtx > 2");
}
AssertFatal (pthread_cond_signal(&proc->cond_rxtx) ==0 ,"");
AssertFatal(pthread_mutex_unlock(&proc->mutex_rxtx) ==0,"");
initRefTimes(t1);
initStaticTime(lastTime);
updateTimes(lastTime, &t1, 20000, "Delay between two IQ acquisitions (case 1)");
pickStaticTime(lastTime);
} else {
printf("Processing subframe %d",proc->subframe_rx);
getchar();
}
} // start_rx_stream==1
} // UE->is_synchronized==1
} // while !oai_exit
return NULL;
}
/*!
* \brief Initialize the UE theads.
* Creates the UE threads:
* - UE_thread_rxtx0
* - UE_thread_rxtx1
* - UE_thread_synch
* - UE_thread_fep_slot0
* - UE_thread_fep_slot1
* - UE_thread_dlsch_proc_slot0
* - UE_thread_dlsch_proc_slot1
* and the locking between them.
*/
void init_UE_threads(int inst) {
struct rx_tx_thread_data *rtd;
PHY_VARS_UE *UE;
AssertFatal(PHY_vars_UE_g!=NULL,"PHY_vars_UE_g is NULL\n");
AssertFatal(PHY_vars_UE_g[inst]!=NULL,"PHY_vars_UE_g[inst] is NULL\n");
AssertFatal(PHY_vars_UE_g[inst][0]!=NULL,"PHY_vars_UE_g[inst][0] is NULL\n");
UE = PHY_vars_UE_g[inst][0];
pthread_attr_init (&UE->proc.attr_ue);
pthread_attr_setstacksize(&UE->proc.attr_ue,8192);//5*PTHREAD_STACK_MIN);
pthread_mutex_init(&UE->proc.mutex_synch,NULL);
pthread_cond_init(&UE->proc.cond_synch,NULL);
UE->proc.instance_cnt_synch = -1;
UE->is_synchronized = 0;
// the threads are not yet active, therefore access is allowed without locking
int nb_threads=RX_NB_TH;
for (int i=0; i<nb_threads; i++) {
rtd = calloc(1, sizeof(struct rx_tx_thread_data));
if (rtd == NULL) abort();
rtd->UE = UE;
rtd->proc = &UE->proc.proc_rxtx[i];
pthread_mutex_init(&UE->proc.proc_rxtx[i].mutex_rxtx,NULL);
pthread_cond_init(&UE->proc.proc_rxtx[i].cond_rxtx,NULL);
UE->proc.proc_rxtx[i].instance_cnt_rxtx = -1;
UE->proc.proc_rxtx[i].sub_frame_start=i;
UE->proc.proc_rxtx[i].sub_frame_step=nb_threads;
printf("Init_UE_threads rtd %d proc %d nb_threads %d i %d\n",rtd->proc->sub_frame_start, UE->proc.proc_rxtx[i].sub_frame_start,nb_threads, i);
pthread_create(&UE->proc.proc_rxtx[i].pthread_rxtx, NULL, UE_thread_rxn_txnp4, rtd);
#ifdef UE_SLOT_PARALLELISATION
//pthread_mutex_init(&UE->proc.proc_rxtx[i].mutex_slot0_dl_processing,NULL);
//pthread_cond_init(&UE->proc.proc_rxtx[i].cond_slot0_dl_processing,NULL);
//pthread_create(&UE->proc.proc_rxtx[i].pthread_slot0_dl_processing,NULL,UE_thread_slot0_dl_processing, rtd);
pthread_mutex_init(&UE->proc.proc_rxtx[i].mutex_slot1_dl_processing,NULL);
pthread_cond_init(&UE->proc.proc_rxtx[i].cond_slot1_dl_processing,NULL);
pthread_create(&UE->proc.proc_rxtx[i].pthread_slot1_dl_processing,NULL,UE_thread_slot1_dl_processing, rtd);
#endif
}
pthread_create(&UE->proc.pthread_synch,NULL,UE_thread_synch,(void*)UE);
}
/*!
* \brief Initialize the UE theads.
* Creates the UE threads:
* - UE_thread_rxtx0
* - UE_thread_synch
* - UE_thread_fep_slot0
* - UE_thread_fep_slot1
* - UE_thread_dlsch_proc_slot0
* - UE_thread_dlsch_proc_slot1
* and the locking between them.
*/
void init_UE_single_thread_stub(int nb_inst) {
struct rx_tx_thread_data *rtd;
PHY_VARS_UE *UE;
for (int i=0; i<nb_inst; i++){
AssertFatal(PHY_vars_UE_g!=NULL,"PHY_vars_UE_g is NULL\n");
AssertFatal(PHY_vars_UE_g[i]!=NULL,"PHY_vars_UE_g[inst] is NULL\n");
AssertFatal(PHY_vars_UE_g[i][0]!=NULL,"PHY_vars_UE_g[inst][0] is NULL\n");
}
UE = PHY_vars_UE_g[0][0];
pthread_attr_init (&UE->proc.attr_ue);
pthread_attr_setstacksize(&UE->proc.attr_ue,8192);//5*PTHREAD_STACK_MIN);
// Don't need synch for phy_stub mode
//pthread_mutex_init(&UE->proc.mutex_synch,NULL);
//pthread_cond_init(&UE->proc.cond_synch,NULL);
// the threads are not yet active, therefore access is allowed without locking
// In phy_stub_UE mode due to less heavy processing operations we don't need two threads
//int nb_threads=RX_NB_TH;
int nb_threads=1;
for (int i=0; i<nb_threads; i++) {
rtd = calloc(1, sizeof(struct rx_tx_thread_data));
if (rtd == NULL) abort();
rtd->UE = UE;
rtd->proc = &UE->proc.proc_rxtx[i];
pthread_mutex_init(&UE->proc.proc_rxtx[i].mutex_rxtx,NULL);
pthread_cond_init(&UE->proc.proc_rxtx[i].cond_rxtx,NULL);
UE->proc.proc_rxtx[i].sub_frame_start=i;
UE->proc.proc_rxtx[i].sub_frame_step=nb_threads;
printf("Init_UE_threads rtd %d proc %d nb_threads %d i %d\n",rtd->proc->sub_frame_start, UE->proc.proc_rxtx[i].sub_frame_start,nb_threads, i);
pthread_create(&UE->proc.proc_rxtx[i].pthread_rxtx, NULL, UE_phy_stub_single_thread_rxn_txnp4, rtd);
}
// Remove thread for UE_sync in phy_stub_UE mode.
//pthread_create(&UE->proc.pthread_synch,NULL,UE_thread_synch,(void*)UE);
}
/*!
* \brief Initialize the UE theads.
* Creates the UE threads:
* - UE_thread_rxtx0
* - UE_thread_synch
* - UE_thread_fep_slot0
* - UE_thread_fep_slot1
* - UE_thread_dlsch_proc_slot0
* - UE_thread_dlsch_proc_slot1
* and the locking between them.
*/
void init_UE_threads_stub(int inst) {
struct rx_tx_thread_data *rtd;
PHY_VARS_UE *UE;
AssertFatal(PHY_vars_UE_g!=NULL,"PHY_vars_UE_g is NULL\n");
AssertFatal(PHY_vars_UE_g[inst]!=NULL,"PHY_vars_UE_g[inst] is NULL\n");
AssertFatal(PHY_vars_UE_g[inst][0]!=NULL,"PHY_vars_UE_g[inst][0] is NULL\n");
UE = PHY_vars_UE_g[inst][0];
pthread_attr_init (&UE->proc.attr_ue);
pthread_attr_setstacksize(&UE->proc.attr_ue,8192);//5*PTHREAD_STACK_MIN);
// Don't need synch for phy_stub mode
//pthread_mutex_init(&UE->proc.mutex_synch,NULL);
//pthread_cond_init(&UE->proc.cond_synch,NULL);
// the threads are not yet active, therefore access is allowed without locking
// In phy_stub_UE mode due to less heavy processing operations we don't need two threads
//int nb_threads=RX_NB_TH;
int nb_threads=1;
for (int i=0; i<nb_threads; i++) {
rtd = calloc(1, sizeof(struct rx_tx_thread_data));
if (rtd == NULL) abort();
rtd->UE = UE;
rtd->proc = &UE->proc.proc_rxtx[i];
pthread_mutex_init(&UE->proc.proc_rxtx[i].mutex_rxtx,NULL);
pthread_cond_init(&UE->proc.proc_rxtx[i].cond_rxtx,NULL);
UE->proc.proc_rxtx[i].sub_frame_start=i;
UE->proc.proc_rxtx[i].sub_frame_step=nb_threads;
printf("Init_UE_threads rtd %d proc %d nb_threads %d i %d\n",rtd->proc->sub_frame_start, UE->proc.proc_rxtx[i].sub_frame_start,nb_threads, i);
pthread_create(&UE->proc.proc_rxtx[i].pthread_rxtx, NULL, UE_phy_stub_thread_rxn_txnp4, rtd);
}
// Remove thread for UE_sync in phy_stub_UE mode.
//pthread_create(&UE->proc.pthread_synch,NULL,UE_thread_synch,(void*)UE);
}
#ifdef OPENAIR2
void fill_ue_band_info(void) {
UE_EUTRA_Capability_t *UE_EUTRA_Capability = UE_rrc_inst[0].UECap->UE_EUTRA_Capability;
int i,j;
bands_to_scan.nbands = UE_EUTRA_Capability->rf_Parameters.supportedBandListEUTRA.list.count;
for (i=0; i<bands_to_scan.nbands; i++) {
for (j=0; j<sizeof (eutra_bands) / sizeof (eutra_bands[0]); j++)
if (eutra_bands[j].band == UE_EUTRA_Capability->rf_Parameters.supportedBandListEUTRA.list.array[i]->bandEUTRA) {
memcpy(&bands_to_scan.band_info[i],
&eutra_bands[j],
sizeof(eutra_band_t));
printf("Band %d (%lu) : DL %u..%u Hz, UL %u..%u Hz, Duplex %s \n",
bands_to_scan.band_info[i].band,
UE_EUTRA_Capability->rf_Parameters.supportedBandListEUTRA.list.array[i]->bandEUTRA,
bands_to_scan.band_info[i].dl_min,
bands_to_scan.band_info[i].dl_max,
bands_to_scan.band_info[i].ul_min,
bands_to_scan.band_info[i].ul_max,
(bands_to_scan.band_info[i].frame_type==FDD) ? "FDD" : "TDD");
break;
}
}
}
#endif
int setup_ue_buffers(PHY_VARS_UE **phy_vars_ue, openair0_config_t *openair0_cfg) {
int i, CC_id;
LTE_DL_FRAME_PARMS *frame_parms;
for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
AssertFatal( phy_vars_ue[CC_id] !=0, "");
frame_parms = &(phy_vars_ue[CC_id]->frame_parms);
// replace RX signal buffers with mmaped HW versions
rxdata = (int32_t**)malloc16( frame_parms->nb_antennas_rx*sizeof(int32_t*) );
txdata = (int32_t**)malloc16( frame_parms->nb_antennas_tx*sizeof(int32_t*) );
for (i=0; i<frame_parms->nb_antennas_rx; i++) {
LOG_I(PHY, "Mapping UE CC_id %d, rx_ant %d, freq %u on card %d, chain %d\n",
CC_id, i, downlink_frequency[CC_id][i], phy_vars_ue[CC_id]->rf_map.card, (phy_vars_ue[CC_id]->rf_map.chain)+i );
free( phy_vars_ue[CC_id]->common_vars.rxdata[i] );
rxdata[i] = (int32_t*)malloc16_clear( 307200*sizeof(int32_t) );
phy_vars_ue[CC_id]->common_vars.rxdata[i] = rxdata[i]; // what about the "-N_TA_offset" ? // N_TA offset for TDD
}
for (i=0; i<frame_parms->nb_antennas_tx; i++) {
LOG_I(PHY, "Mapping UE CC_id %d, tx_ant %d, freq %u on card %d, chain %d\n",
CC_id, i, downlink_frequency[CC_id][i], phy_vars_ue[CC_id]->rf_map.card, (phy_vars_ue[CC_id]->rf_map.chain)+i );
free( phy_vars_ue[CC_id]->common_vars.txdata[i] );
txdata[i] = (int32_t*)malloc16_clear( 307200*sizeof(int32_t) );
phy_vars_ue[CC_id]->common_vars.txdata[i] = txdata[i];
}
// rxdata[x] points now to the same memory region as phy_vars_ue[CC_id]->common_vars.rxdata[x]
// txdata[x] points now to the same memory region as phy_vars_ue[CC_id]->common_vars.txdata[x]
// be careful when releasing memory!
// because no "release_ue_buffers"-function is available, at least rxdata and txdata memory will leak (only some bytes)
}
return 0;
}
// Panos: This timer thread is used only in the phy_stub mode as an independent timer
// which will be ticking and provide the SFN/SF values that will be used from the UE threads
// playing the role of nfapi-pnf.
//02/02/2018
static void* timer_thread( void* param ) {
thread_top_init("timer_thread",1,870000L,1000000L,1000000L);
timer_subframe =9;
timer_frame =1023;
//phy_stub_ticking = (SF_ticking*)malloc(sizeof(SF_ticking));
phy_stub_ticking->ticking_var = -1;
PHY_VARS_UE *UE;
UE = PHY_vars_UE_g[0][0];
//double t_diff;
int external_timer = 0;
wait_sync("timer_thread");
opp_enabled = 1;
// first check if we are receiving timing indications
if(nfapi_mode==4) {
usleep(10000);
if (UE->instance_cnt_timer > 0) {
external_timer = 1;
int absSFm1 = ((emulator_absSF+10239)%10240);
timer_frame = absSFm1/10;
timer_subframe = absSFm1%10;
pthread_mutex_lock(&UE->timer_mutex);
UE->instance_cnt_timer = -1;
pthread_mutex_unlock(&UE->timer_mutex);
LOG_I(PHY,"Running with external timer\n");
}
else LOG_I(PHY,"Running with internal timer\n");
}
struct timespec t_start;
struct timespec t_now;
struct timespec t_sleep;
uint64_t T_0;
uint64_t T_now;
uint64_t T_next_SF;
uint64_t T_sleep;
uint64_t sf_cnt = 0; //Total Subframe counter
clock_gettime(CLOCK_MONOTONIC, &t_start);
T_0 = (uint64_t) t_start.tv_sec*1000000000 + t_start.tv_nsec;
LOG_D(MAC, "timer_thread(), T_0 value: %" PRId64 "\n", T_0);
while (!oai_exit) {
// these are local subframe/frame counters to check that we are in synch with the fronthaul timing.
// They are set on the first rx/tx in the underly FH routines.
if (timer_subframe==9) {
timer_subframe=0;
timer_frame++;
timer_frame&=1023;
} else {
timer_subframe++;
}
//AssertFatal( 0 == pthread_cond_signal(&phy_stub_ticking->cond_ticking), "");
AssertFatal(pthread_mutex_lock(&phy_stub_ticking->mutex_ticking) ==0,"");
phy_stub_ticking->ticking_var++;
// This should probably be a call to pthread_cond_broadcast when we introduce support for multiple UEs (threads)
if(phy_stub_ticking->ticking_var == 0){
//AssertFatal(phy_stub_ticking->ticking_var == 0,"phy_stub_ticking->ticking_var = %d",
//phy_stub_ticking->ticking_var);
if (pthread_cond_signal(&phy_stub_ticking->cond_ticking) != 0) {
//LOG_E( PHY, "[SCHED][UE %d] ERROR pthread_cond_signal for UE RX thread\n", UE->Mod_id);
LOG_E( PHY, "timer_thread ERROR pthread_cond_signal for UE_thread\n");
exit_fun("nothing to add");
}
}
else
LOG_D(MAC, "timer_thread() Timing problem! ticking_var value:%d \n \n \n", phy_stub_ticking->ticking_var);
AssertFatal(pthread_mutex_unlock(&phy_stub_ticking->mutex_ticking) ==0,"");
start_meas(&UE->timer_stats);
//clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &start); // get initial time-stamp
if (external_timer == 0) {
clock_gettime(CLOCK_MONOTONIC, &t_now);
sf_cnt++;
T_next_SF = T_0 + sf_cnt*1000000;
T_now =(uint64_t) t_now.tv_sec*1000000000 + t_now.tv_nsec;
if(T_now > T_next_SF){
t_sleep.tv_sec =0;
t_sleep.tv_nsec =0;
}
else{
T_sleep = T_next_SF - T_now;
t_sleep.tv_sec =0;
t_sleep.tv_nsec = (__syscall_slong_t) T_sleep;
}
nanosleep(&t_sleep, (struct timespec *)NULL);
UE_tport_t pdu;
pdu.header.packet_type = TTI_SYNC;
pdu.header.absSF = (timer_frame*10)+timer_subframe;
if (nfapi_mode!=3){
multicast_link_write_sock(0,
(char *)&pdu,
sizeof(UE_tport_header_t));
}
}
else {
wait_on_condition(&UE->timer_mutex,&UE->timer_cond,&UE->instance_cnt_timer,"timer_thread");
release_thread(&UE->timer_mutex,&UE->instance_cnt_timer,"timer_thread");
}
/*stop_meas(&UE->timer_stats);
t_diff = get_time_meas_us(&UE->timer_stats);
stop_meas(&UE->timer_stats);
t_diff = get_time_meas_us(&UE->timer_stats);*/
}
free(phy_stub_ticking);
pthread_cond_destroy(&phy_stub_ticking->cond_ticking);
pthread_mutex_destroy(&phy_stub_ticking->mutex_ticking);
return 0;
}
int init_timer_thread(void) {
//PHY_VARS_UE *UE=PHY_vars_UE_g[0];
PHY_VARS_UE *UE=PHY_vars_UE_g[0][0];
phy_stub_ticking = (SF_ticking*)malloc(sizeof(SF_ticking));
pthread_mutex_init(&UE->timer_mutex,NULL);
pthread_cond_init(&UE->timer_cond,NULL);
UE->instance_cnt_timer = -1;
pthread_mutex_init(&phy_stub_ticking->mutex_ticking,NULL);
pthread_cond_init(&phy_stub_ticking->cond_ticking,NULL);
pthread_create(&phy_stub_ticking->pthread_timer, NULL, &timer_thread, NULL);
return 0;
}
/* HACK: this function is needed to compile the UE
* fix it somehow
*/
int8_t find_dlsch(uint16_t rnti, PHY_VARS_eNB *eNB,find_type_t type)
{
printf("you cannot read this\n");
abort();
}
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