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Updated samples per slot as per specs.

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gNB runs fine. UE yet to be tested.
This commit is contained in:
Sakthivel Velumani
2020-01-31 18:16:17 +01:00
parent 0bb1bcc0bb
commit bc38ec6b29
9 changed files with 111 additions and 69 deletions
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executables/nr-gnb.c
+12 -13
View File
@@ -108,8 +108,7 @@ extern openair0_config_t openair0_cfg[MAX_CARDS];
extern int transmission_mode;
uint16_t sl_ahead=6;
uint16_t sf_ahead=6;
uint16_t sf_ahead=3;
//pthread_t main_gNB_thread;
time_stats_t softmodem_stats_mt; // main thread
@@ -216,7 +215,7 @@ static inline int rxtx(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx, int frame_t
if (oai_exit) return(-1);
// *****************************************
// TX processing for subframe n+sl_ahead
// TX processing for subframe n+sf_ahead
// run PHY TX procedures the one after the other for all CCs to avoid race conditions
// (may be relaxed in the future for performance reasons)
// *****************************************
@@ -407,11 +406,11 @@ void gNB_top(PHY_VARS_gNB *gNB, int frame_rx, int slot_rx, char *string, struct
if (!oai_exit) {
T(T_ENB_MASTER_TICK, T_INT(0), T_INT(proc->frame_rx), T_INT(proc->slot_rx));
L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sl_ahead*fp->samples_per_slot);
L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sf_ahead*fp->samples_per_subframe);
L1_proc->frame_rx = ru_proc->frame_rx;
L1_proc->slot_rx = ru_proc->tti_rx;
L1_proc->frame_tx = (L1_proc->slot_rx > (fp->slots_per_frame-1-sl_ahead)) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
L1_proc->slot_tx = (L1_proc->slot_rx + sl_ahead)%fp->slots_per_frame;
L1_proc->frame_tx = (L1_proc->slot_rx > (fp->slots_per_frame-1-(fp->slots_per_subframe*sf_ahead))) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
L1_proc->slot_tx = (L1_proc->slot_rx + (fp->slots_per_subframe*sf_ahead))%fp->slots_per_frame;
if (rxtx(gNB,L1_proc->frame_rx,L1_proc->slot_rx,L1_proc->frame_tx,L1_proc->slot_tx,string) < 0) LOG_E(PHY,"gNB %d CC_id %d failed during execution\n",gNB->Mod_id,gNB->CC_id);
@@ -571,7 +570,7 @@ int wakeup_rxtx(PHY_VARS_gNB *gNB,RU_t *ru) {
abstime.tv_sec += 1;
}
// wake up TX for subframe n+sl_ahead
// wake up TX for subframe n+sf_ahead
// lock the TX mutex and make sure the thread is ready
AssertFatal((ret=pthread_mutex_timedlock(&L1_proc->mutex, &abstime)) == 0,"mutex_lock returns %d\n", ret);
@@ -587,15 +586,15 @@ int wakeup_rxtx(PHY_VARS_gNB *gNB,RU_t *ru) {
// TS_rx is the last received timestamp (start of 1st slot), TS_tx is the desired
// transmitted timestamp of the next TX slot (first).
// The last (TS_rx mod samples_per_frame) was n*samples_per_tti,
// we want to generate subframe (n+sl_ahead), so TS_tx = TX_rx+sl_ahead*samples_per_tti,
// and proc->slot_tx = proc->slot_rx+sl_ahead
L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sl_ahead*fp->samples_per_slot);
// we want to generate subframe (n+sf_ahead), so TS_tx = TX_rx+sf_ahead*samples_per_tti,
// and proc->slot_tx = proc->slot_rx+sf_ahead
L1_proc->timestamp_tx = ru_proc->timestamp_rx + (sf_ahead*fp->samples_per_subframe);
L1_proc->frame_rx = ru_proc->frame_rx;
L1_proc->slot_rx = ru_proc->tti_rx;
L1_proc->frame_tx = (L1_proc->slot_rx > (fp->slots_per_frame-1-sl_ahead)) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
L1_proc->slot_tx = (L1_proc->slot_rx + sl_ahead)%fp->slots_per_frame;
L1_proc->frame_tx = (L1_proc->slot_rx > (fp->slots_per_frame-1-(fp->slots_per_subframe*sf_ahead))) ? (L1_proc->frame_rx+1)&1023 : L1_proc->frame_rx;
L1_proc->slot_tx = (L1_proc->slot_rx + (fp->slots_per_subframe*sf_ahead))%fp->slots_per_frame;
LOG_D(PHY,"wakeupL1: passing parameter IC = %d, RX: %d.%d, TX: %d.%d to L1 sl_ahead = %d\n", L1_proc->instance_cnt, L1_proc->frame_rx, L1_proc->slot_rx, L1_proc->frame_tx, L1_proc->slot_tx, sl_ahead);
LOG_D(PHY,"wakeupL1: passing parameter IC = %d, RX: %d.%d, TX: %d.%d to L1 sf_ahead = %d\n", L1_proc->instance_cnt, L1_proc->frame_rx, L1_proc->slot_rx, L1_proc->frame_tx, L1_proc->slot_tx, sf_ahead);
pthread_mutex_unlock( &L1_proc->mutex );
executables/nr-ru.c
+37 -29
View File
@@ -50,6 +50,7 @@
#include <execinfo.h>
#include <getopt.h>
#include <sys/sysinfo.h>
#include <math.h>
#undef MALLOC //there are two conflicting definitions, so we better make sure we don't use it at all
@@ -134,7 +135,7 @@ void configure_rru(int idx, void *arg);
int attach_rru(RU_t *ru);
int connect_rau(RU_t *ru);
extern uint16_t sl_ahead;
extern uint16_t sf_ahead;
extern int emulate_rf;
extern int numerology;
@@ -331,8 +332,9 @@ void fh_if5_south_in(RU_t *ru,
NR_DL_FRAME_PARMS *fp = ru->nr_frame_parms;
RU_proc_t *proc = &ru->proc;
recv_IF5(ru, &proc->timestamp_rx, *tti, IF5_RRH_GW_UL);
proc->frame_rx = (proc->timestamp_rx / (fp->samples_per_slot*20))&1023;
proc->tti_rx = (proc->timestamp_rx / fp->samples_per_slot)%20;
proc->frame_rx = (proc->timestamp_rx / (fp->samples_per_subframe*10))&1023;
uint32_t idx_sf = proc->timestamp_rx / fp->samples_per_subframe;
proc->tti_rx = (idx_sf * fp->slots_per_subframe + (int)round((proc->timestamp_rx % fp->samples_per_subframe) / fp->samples_per_slot0))%(fp->slots_per_frame);
if (proc->first_rx == 0) {
if (proc->tti_rx != *tti) {
@@ -390,12 +392,12 @@ void fh_if4p5_south_in(RU_t *ru,
} while(proc->symbol_mask[sl] != symbol_mask_full);
//caculate timestamp_rx, timestamp_tx based on frame and subframe
proc->tti_rx = sl;
proc->frame_rx = f;
proc->timestamp_rx = ((proc->frame_rx * fp->slots_per_frame) + proc->tti_rx ) * fp->samples_per_slot ;
proc->tti_rx = sl;
proc->frame_rx = f;
proc->timestamp_rx = (proc->frame_rx * fp->samples_per_subframe * 10) + fp->get_samples_slot_timestamp(proc->tti_rx, fp);
// proc->timestamp_tx = proc->timestamp_rx + (4*fp->samples_per_subframe);
proc->tti_tx = (sl+sl_ahead)%fp->slots_per_frame;
proc->frame_tx = (sl>(fp->slots_per_frame-sl_ahead)) ? (f+1)&1023 : f;
proc->tti_tx = (sl+(fp->slots_per_subframe*sf_ahead))%fp->slots_per_frame;
proc->frame_tx = (sl>(fp->slots_per_frame-1-(fp->slots_per_subframe*sf_ahead))) ? (f+1)&1023 : f;
if (proc->first_rx == 0) {
if (proc->tti_rx != *slot) {
@@ -502,8 +504,9 @@ void fh_if5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
openair0_timestamp timestamp_tx;
recv_IF5(ru, &timestamp_tx, *slot, IF5_RRH_GW_DL);
// printf("Received subframe %d (TS %llu) from RCC\n",tti_tx,timestamp_tx);
tti_tx = (timestamp_tx/fp->samples_per_slot)%fp->slots_per_frame;
frame_tx = (timestamp_tx/(fp->samples_per_slot*fp->slots_per_frame))&1023;
frame_tx = (timestamp_tx / (fp->samples_per_subframe*10))&1023;
uint32_t idx_sf = timestamp_tx / fp->samples_per_subframe;
tti_tx = (idx_sf * fp->slots_per_subframe + (int)round((timestamp_tx % fp->samples_per_subframe) / fp->samples_per_slot0))%(fp->slots_per_frame);
if (proc->first_tx != 0) {
*slot = tti_tx;
@@ -556,12 +559,12 @@ void fh_if4p5_north_asynch_in(RU_t *ru,int *frame,int *slot) {
if ((nr_slot_select(cfg,frame_tx,slot_tx) & NR_DOWNLINK_SLOT)>0) stop_meas(&ru->rx_fhaul);
proc->tti_tx = slot_tx;
proc->frame_tx = frame_tx;
proc->tti_tx = slot_tx;
proc->frame_tx = frame_tx;
if ((frame_tx == 0)&&(slot_tx == 0)) proc->frame_tx_unwrap += 1024;
proc->timestamp_tx = ((((uint64_t)frame_tx + (uint64_t)proc->frame_tx_unwrap) * fp->slots_per_frame) + (uint64_t)slot_tx) * (uint64_t)fp->samples_per_slot;
proc->timestamp_tx = (((uint64_t)frame_tx + (uint64_t)proc->frame_tx_unwrap) * fp->samples_per_subframe * 10) + fp->get_samples_slot_timestamp(slot_tx, fp);
LOG_D(PHY,"RU %d/%d TST %llu, frame %d, subframe %d\n",ru->idx,0,(long long unsigned int)proc->timestamp_tx,frame_tx,slot_tx);
// dump VCD output for first RU in list
@@ -628,26 +631,27 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
void *rxp[ru->nb_rx];
unsigned int rxs;
int i;
uint32_t samples_per_slot = fp->get_samples_per_slot(*slot,fp);
openair0_timestamp ts,old_ts;
AssertFatal(*slot<fp->slots_per_frame && *slot>=0, "slot %d is illegal (%d)\n",*slot,fp->slots_per_frame);
for (i=0; i<ru->nb_rx; i++)
rxp[i] = (void *)&ru->common.rxdata[i][*slot*fp->samples_per_slot];
rxp[i] = (void *)&ru->common.rxdata[i][fp->get_samples_slot_timestamp(*slot,fp)];
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
old_ts = proc->timestamp_rx;
LOG_D(PHY,"Reading %d samples for slot %d (%p)\n",fp->samples_per_slot,*slot,rxp[0]);
LOG_D(PHY,"Reading %d samples for slot %d (%p)\n",samples_per_slot,*slot,rxp[0]);
if(emulate_rf) {
wait_on_condition(&proc->mutex_emulateRF,&proc->cond_emulateRF,&proc->instance_cnt_emulateRF,"emulatedRF_thread");
release_thread(&proc->mutex_emulateRF,&proc->instance_cnt_emulateRF,"emulatedRF_thread");
rxs = fp->samples_per_slot;
rxs = samples_per_slot;
ts = old_ts + rxs;
} else {
rxs = ru->rfdevice.trx_read_func(&ru->rfdevice,
&ts,
rxp,
fp->samples_per_slot,
samples_per_slot,
ru->nb_rx);
}
@@ -657,21 +661,22 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
//AssertFatal(rxs == fp->samples_per_subframe,
//"rx_rf: Asked for %d samples, got %d from USRP\n",fp->samples_per_subframe,rxs);
if (rxs != fp->samples_per_slot) LOG_E(PHY, "rx_rf: Asked for %d samples, got %d from USRP\n",fp->samples_per_slot,rxs);
if (rxs != samples_per_slot) LOG_E(PHY, "rx_rf: Asked for %d samples, got %d from USRP\n",samples_per_slot,rxs);
if (proc->first_rx == 1) {
ru->ts_offset = proc->timestamp_rx;
proc->timestamp_rx = 0;
} else {
if (proc->timestamp_rx - old_ts != fp->samples_per_slot) {
LOG_D(PHY,"rx_rf: rfdevice timing drift of %"PRId64" samples (ts_off %"PRId64")\n",proc->timestamp_rx - old_ts - fp->samples_per_slot,ru->ts_offset);
ru->ts_offset += (proc->timestamp_rx - old_ts - fp->samples_per_slot);
if (proc->timestamp_rx - old_ts != samples_per_slot) {
LOG_D(PHY,"rx_rf: rfdevice timing drift of %"PRId64" samples (ts_off %"PRId64")\n",proc->timestamp_rx - old_ts - samples_per_slot,ru->ts_offset);
ru->ts_offset += (proc->timestamp_rx - old_ts - samples_per_slot);
proc->timestamp_rx = ts-ru->ts_offset;
}
}
proc->frame_rx = (proc->timestamp_rx / (fp->samples_per_slot*fp->slots_per_frame))&1023;
proc->tti_rx = (proc->timestamp_rx / fp->samples_per_slot)%fp->slots_per_frame;
proc->frame_rx = (proc->timestamp_rx / (fp->samples_per_subframe*10))&1023;
uint32_t idx_sf = proc->timestamp_rx / fp->samples_per_subframe;
proc->tti_rx = (idx_sf * fp->slots_per_subframe + (int)round((proc->timestamp_rx % fp->samples_per_subframe) / fp->samples_per_slot0))%(fp->slots_per_frame);
// synchronize first reception to frame 0 subframe 0
LOG_D(PHY,"RU %d/%d TS %llu (off %d), frame %d, slot %d.%d / %d\n",
ru->idx,
@@ -687,7 +692,7 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
if (proc->first_rx == 0) {
if (proc->tti_rx != *slot) {
LOG_E(PHY,"Received Timestamp (%llu) doesn't correspond to the time we think it is (proc->tti_rx %d, subframe %d)\n",(long long unsigned int)proc->timestamp_rx,proc->tti_rx,*slot);
LOG_E(PHY,"Received Timestamp (%llu) doesn't correspond to the time we think it is (proc->tti_rx %d, slot %d)\n",(long long unsigned int)proc->timestamp_rx,proc->tti_rx,*slot);
exit_fun("Exiting");
}
@@ -704,7 +709,7 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
//printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d)\n",ru->timestamp_rx,proc->frame_rx,frame,proc->tti_rx,subframe);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
if (rxs != fp->samples_per_slot) {
if (rxs != samples_per_slot) {
//exit_fun( "problem receiving samples" );
LOG_E(PHY, "problem receiving samples\n");
}
@@ -719,13 +724,13 @@ void tx_rf(RU_t *ru,int frame,int slot, uint64_t timestamp) {
unsigned int txs;
int i,txsymb;
T(T_ENB_PHY_OUTPUT_SIGNAL, T_INT(0), T_INT(0), T_INT(frame), T_INT(slot),
T_INT(0), T_BUFFER(&ru->common.txdata[0][slot * fp->samples_per_slot], fp->samples_per_slot * 4));
T_INT(0), T_BUFFER(&ru->common.txdata[0][fp->get_samples_slot_timestamp(slot,fp)], fp->samples_per_subframe));
int slot_type = nr_slot_select(cfg,frame,slot%fp->slots_per_frame);
int prevslot_type = nr_slot_select(cfg,frame,(slot+(fp->slots_per_frame-1))%fp->slots_per_frame);
int nextslot_type = nr_slot_select(cfg,frame,(slot+1)%fp->slots_per_frame);
int sf_extension = 0; //sf_extension = ru->sf_extension;
int siglen=fp->samples_per_slot;
int siglen=fp->get_samples_per_slot(slot,fp);
int flags=1;
//nr_subframe_t SF_type = nr_slot_select(cfg,slot%fp->slots_per_frame);
@@ -738,7 +743,10 @@ void tx_rf(RU_t *ru,int frame,int slot, uint64_t timestamp) {
txsymb++;
}
AssertFatal(txsymb>0,"illegal txsymb %d\n",txsymb);
siglen = (fp->ofdm_symbol_size + fp->nb_prefix_samples0) + (txsymb - 1) * (fp->ofdm_symbol_size + fp->nb_prefix_samples);
if(slot%(fp->slots_per_subframe/2))
siglen = txsymb * (fp->ofdm_symbol_size + fp->nb_prefix_samples);
else
siglen = (fp->ofdm_symbol_size + fp->nb_prefix_samples0) + (txsymb - 1) * (fp->ofdm_symbol_size + fp->nb_prefix_samples);
//+ ru->end_of_burst_delay;
flags=3; // end of burst
}
@@ -759,7 +767,7 @@ void tx_rf(RU_t *ru,int frame,int slot, uint64_t timestamp) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_RU, frame );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_TX0_RU, slot );
for (i=0; i<ru->nb_tx; i++)
txp[i] = (void *)&ru->common.txdata[i][(slot*fp->samples_per_slot)-sf_extension];
txp[i] = (void *)&ru->common.txdata[i][fp->get_samples_slot_timestamp(slot,fp)-sf_extension];
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TST, (timestamp-ru->openair0_cfg.tx_sample_advance)&0xffffffff );
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_WRITE, 1 );