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nr ue : frame configuration and pucch changes

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This commit is contained in:
Jacques
2018-08-21 14:10:19 +02:00
parent a8458d3156
commit e21db57ad5
13 changed files with 182 additions and 58 deletions
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targets/RT/USER/nr-ue.c
+82 -10
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@@ -67,6 +67,69 @@ extern double cpuf;
static nfapi_nr_config_request_t config_t;
static nfapi_nr_config_request_t* config =&config_t;
/*
* NR SLOT PROCESSING SEQUENCE
*
* Processing occurs with following steps for connected mode:
*
* - Rx samples for a slot are received,
* - PDCCH processing (including DCI extraction for downlink and uplink),
* - PDSCH processing (including transport blocks decoding),
* - PUCCH/PUSCH (transmission of acknowledgements, CSI, ... or data).
*
* Time between reception of the slot and related transmission depends on UE processing performance.
* It is defined by the value NR_UE_CAPABILITY_SLOT_RX_TO_TX.
*
* In NR, network gives the duration between Rx slot and Tx slot in the DCI:
* - for reception of a PDSCH and its associated acknowledgment slot (with a PUCCH or a PUSCH),
* - for reception of an uplink grant and its associated PUSCH slot.
*
* So duration between reception and it associated transmission depends on its transmission slot given in the DCI.
* NR_UE_CAPABILITY_SLOT_RX_TO_TX means the minimum duration but higher duration can be given by the network because UE can support it.
*
* Slot k
* -------+------------+--------
* Frame | Tx samples |
* Subframe | buffer |
* Slot n -------+------------+--------
* ------ +------------+-------- |
* | Rx samples | |
* | buffer | |
* -------+------------+-------- |
* | |
* V |
* +------------+ |
* | PDCCH | |
* | processing | |
* +------------+ |
* | | |
* | v |
* | +------------+ |
* | | PDSCH | |
* | | processing | decoding result |
* | +------------+ -> ACK/NACK of PDSCH |
* | | |
* | v |
* | +-------------+------------+ |
* | | PUCCH/PUSCH | Tx samples | |
* | | processing | transfer | |
* | +-------------+------------+ |
* | |
* |/___________________________________________________________\|
* \ duration between reception and associated transmission /
*
* Remark: processing is done slot by slot, it can be distribute on different threads which are executed in parallel.
* This is an architecture optimization in order to cope with real time constraints.
* By example, for LTE, subframe processing is spread over 4 different threads.
*
*/
#ifndef NO_RAT_NR
#define DURATION_RX_TO_TX (NR_UE_CAPABILITY_SLOT_RX_TO_TX) /* for NR this will certainly depends to such UE capability which is not yet defined */
#else
#define DURATION_RX_TO_TX (4) /* For LTE, this duration is fixed to 4 and it is linked to LTE standard for both modes FDD/TDD */
#endif
#define FRAME_PERIOD 100000000ULL
#define DAQ_PERIOD 66667ULL
#define FIFO_PRIORITY 40
@@ -586,9 +649,7 @@ static void *UE_thread_rxn_txnp4(void *arg) {
#ifndef NO_RAT_NR
// Process Rx data for one sub-frame
nr_slot_t nr_slot ; //= slot_select_nr(&UE->frame_parms, proc->frame_tx, proc->nr_tti_tx);
if (nr_slot == NR_TDD_DOWNLINK_SLOT) {
if (slot_select_nr(&UE->frame_parms, proc->frame_tx, proc->nr_tti_tx) & NR_DOWNLINK_SLOT) {
#else
// Process Rx data for one sub-frame
lte_subframe_t sf_type = subframe_select( &UE->frame_parms, proc->subframe_rx);
@@ -695,11 +756,15 @@ static void *UE_thread_rxn_txnp4(void *arg) {
// Prepare the future Tx data
#if 0
#ifndef NO_RAT_NR
if (slot_select_nr(&UE->frame_parms, proc->frame_tx, proc->nr_tti_tx) & NR_UPLINK_SLOT)
#else
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,no_relay);
#endif
#endif
#if 0
if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_S) &&
(UE->frame_parms.frame_type == TDD))
@@ -810,7 +875,7 @@ void *UE_thread(void *arg) {
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++)
for (int sf=0; sf<LTE_NUMBER_OF_SUBFRAMES_PER_FRAME; sf++)
// printf("Reading dummy sf %d\n",sf);
UE->rfdevice.trx_read_func(&UE->rfdevice,
&timestamp,
@@ -857,7 +922,8 @@ void *UE_thread(void *arg) {
} else {
tti_nr++;
tti_nr%=10*UE->frame_parms.ttis_per_subframe;
int ttis_per_frame = LTE_NUMBER_OF_SUBFRAMES_PER_FRAME*UE->frame_parms.ttis_per_subframe;
tti_nr %= ttis_per_frame;
UE_nr_rxtx_proc_t *proc = &UE->proc.proc_rxtx[thread_idx];
// update thread index for received subframe
UE->current_thread_id[tti_nr] = thread_idx;
@@ -878,7 +944,7 @@ void *UE_thread(void *arg) {
txp[i] = (void*)&UE->common_vars.txdata[i][((tti_nr+2)%10*UE->frame_parms.ttis_per_subframe)*UE->frame_parms.samples_per_tti];
int readBlockSize, writeBlockSize;
if (tti_nr<(10*UE->frame_parms.ttis_per_subframe-1)) {
if (tti_nr<(ttis_per_frame - 1)) {
readBlockSize=UE->frame_parms.samples_per_tti;
writeBlockSize=UE->frame_parms.samples_per_tti;
} else {
@@ -917,7 +983,7 @@ void *UE_thread(void *arg) {
writeBlockSize,
UE->frame_parms.nb_antennas_tx,
1),"");
if( tti_nr==(10*UE->frame_parms.ttis_per_subframe-1)) {
if( tti_nr==(ttis_per_frame-1)) {
// read in first symbol of next frame and adjust for timing drift
int first_symbols=writeBlockSize-readBlockSize;
if ( first_symbols > 0 )
@@ -954,13 +1020,19 @@ void *UE_thread(void *arg) {
for (th_id=0; th_id < RX_NB_TH; th_id++) {
UE->proc.proc_rxtx[th_id].gotIQs=readTime(gotIQs);
}
proc->nr_tti_rx=tti_nr;
proc->nr_tti_tx=(tti_nr+4)%(10*UE->frame_parms.ttis_per_subframe);
proc->subframe_rx=tti_nr>>((uint8_t)(log2 (UE->frame_parms.ttis_per_subframe)));
proc->frame_tx = proc->frame_rx + (proc->subframe_rx>5?1:0);
proc->frame_tx = proc->frame_rx;
proc->nr_tti_tx= tti_nr + DURATION_RX_TO_TX;
if (proc->nr_tti_tx > ttis_per_frame) {
proc->frame_tx = (proc->frame_tx + 1)%MAX_FRAME_NUMBER;
proc->nr_tti_tx %= ttis_per_frame;
}
proc->subframe_tx=(proc->nr_tti_tx)>>((uint8_t)(log2 (UE->frame_parms.ttis_per_subframe)));
proc->timestamp_tx = timestamp+
(4*UE->frame_parms.samples_per_tti)-
(DURATION_RX_TO_TX*UE->frame_parms.samples_per_tti)-
UE->frame_parms.ofdm_symbol_size-UE->frame_parms.nb_prefix_samples0;
proc->instance_cnt_rxtx++;