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[OAI-UE] TimingOffset tracking faster loop

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This commit is contained in:
gabrielC
2017-01-25 10:57:20 +01:00
parent 2045a49313
commit 7a2984e8ae
9 changed files with 121 additions and 29 deletions
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targets/RT/USER/lte-ue.c
+34 -10
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@@ -1152,18 +1152,37 @@ void *UE_thread(void *arg) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_SF9, 1 );
// read in first symbol of next frame and adjust for timing drift
for (i=0; i<UE->frame_parms.nb_antennas_rx; i++)
{
rxp[i] = (void*)&UE->common_vars.rxdata[i][0];
}
rxs = UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp1,
(void**)UE->common_vars.rxdata,
UE->frame_parms.ofdm_symbol_size + UE->frame_parms.nb_prefix_samples0 - rx_off_diff,
rxp,
UE->frame_parms.nb_prefix_samples0 - rx_off_diff,
UE->frame_parms.nb_antennas_rx);
for (i=0; i<UE->frame_parms.nb_antennas_rx; i++)
{
rxp[i] = (void*)&UE->common_vars.rxdata[i][UE->frame_parms.nb_prefix_samples0];
}
rxs = UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp1,
rxp,
UE->frame_parms.ofdm_symbol_size,
UE->frame_parms.nb_antennas_rx);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ_SF9, 0 );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_UE0_TRX_READ_NS, rxs );
if (rxs != (UE->frame_parms.ofdm_symbol_size + UE->frame_parms.nb_prefix_samples0 - rx_off_diff)) {
if (rxs != (UE->frame_parms.ofdm_symbol_size)) {
LOG_E(PHY, "problem in rx 7! expect #samples=%d but got only %d! rx_off_diff=%d\n", UE->frame_parms.ofdm_symbol_size+UE->frame_parms.nb_prefix_samples0 - rx_off_diff, rxs, rx_off_diff);
exit_fun("problem in rx 7!");
return &UE_thread_retval;
}
UE->rx_offset_diff = rx_off_diff;
LOG_E(PHY,"SET rx_off_diff to %d\n",UE->rx_offset_diff);
rx_off_diff = 0;
}
}
@@ -1232,21 +1251,26 @@ void *UE_thread(void *arg) {
getchar();
}
}// for sf=0..10
uint8_t proc_select = 9&1;
UE_rxtx_proc_t *proc = &UE->proc.proc_rxtx[proc_select];
if ((UE->rx_offset<(5*UE->frame_parms.samples_per_tti)) &&
(UE->rx_offset > RX_OFF_MIN) &&
(UE->rx_offset > 0) &&
(rx_correction_timer == 0)) {
rx_off_diff = -UE->rx_offset + RX_OFF_MIN;
LOG_D(PHY,"UE->rx_offset %d > %d, diff %d\n",UE->rx_offset,RX_OFF_MIN,rx_off_diff);
rx_off_diff = -1 ;
LOG_I(PHY,"AbsSubframe %d.%d UE->rx_offset %d > %d, diff %d\n",proc->frame_rx,proc->subframe_rx,UE->rx_offset,0,rx_off_diff);
rx_correction_timer = 5;
} else if ((UE->rx_offset>(5*UE->frame_parms.samples_per_tti)) &&
(UE->rx_offset < ((10*UE->frame_parms.samples_per_tti)-RX_OFF_MIN)) &&
(UE->rx_offset < ((10*UE->frame_parms.samples_per_tti))) &&
(rx_correction_timer == 0)) { // moving to the left so drop rx_off_diff samples
rx_off_diff = 10*UE->frame_parms.samples_per_tti - RX_OFF_MIN - UE->rx_offset;
LOG_D(PHY,"UE->rx_offset %d < %d, diff %d\n",UE->rx_offset,10*UE->frame_parms.samples_per_tti-RX_OFF_MIN,rx_off_diff);
rx_off_diff = 1;
LOG_I(PHY,"AbsSubframe %d.%d UE->rx_offset %d < %d, diff %d\n",proc->frame_rx,proc->subframe_rx,UE->rx_offset,10*UE->frame_parms.samples_per_tti,rx_off_diff);
rx_correction_timer = 5;
}
//rx_off_diff = 0;
if (rx_correction_timer>0)
rx_correction_timer--;
} // start_rx_stream==1