Commit 486f4f5f authored by Roberto Rosca's avatar Roberto Rosca

Adding second layer timing advance

   - Renamed position coordinates function (better readability)
   - Introduced large timing advance compensation mechanism
parent f88c47ba
...@@ -43,6 +43,8 @@ ...@@ -43,6 +43,8 @@
#include "common/utils/threadPool/notified_fifo.h" #include "common/utils/threadPool/notified_fifo.h"
#include "position_interface.h" #include "position_interface.h"
extern unsigned int NTN_UE_Koffset;
/* /*
* NR SLOT PROCESSING SEQUENCE * NR SLOT PROCESSING SEQUENCE
* *
...@@ -156,9 +158,8 @@ void init_nr_ue_vars(PHY_VARS_NR_UE *ue, uint8_t UE_id) ...@@ -156,9 +158,8 @@ void init_nr_ue_vars(PHY_VARS_NR_UE *ue, uint8_t UE_id)
ue->if_inst = nr_ue_if_module_init(UE_id); ue->if_inst = nr_ue_if_module_init(UE_id);
ue->dci_thres = 0; ue->dci_thres = 0;
ue->target_Nid_cell = -1; ue->target_Nid_cell = -1;
ue->timing_advance = ue->frame_parms.samples_per_subframe * 2 * get_nrUE_params()->ntn_ta_common;
check_position(UE_id); config_position_coordinates(UE_id);
// initialize all signal buffers // initialize all signal buffers
init_nr_ue_signal(ue, nb_connected_gNB); init_nr_ue_signal(ue, nb_connected_gNB);
...@@ -552,7 +553,7 @@ void processSlotTX(void *arg) ...@@ -552,7 +553,7 @@ void processSlotTX(void *arg)
int slots_per_frame = (UE->sl_mode == 2) ? UE->SL_UE_PHY_PARAMS.sl_frame_params.slots_per_frame int slots_per_frame = (UE->sl_mode == 2) ? UE->SL_UE_PHY_PARAMS.sl_frame_params.slots_per_frame
: UE->frame_parms.slots_per_frame; : UE->frame_parms.slots_per_frame;
int next_slot = (proc->nr_slot_tx + 1) % slots_per_frame; int next_slot = (proc->nr_slot_tx + 1 + proc->nr_slot_tx_offset) % slots_per_frame;
dynamic_barrier_join(&UE->process_slot_tx_barriers[next_slot]); dynamic_barrier_join(&UE->process_slot_tx_barriers[next_slot]);
RU_write(rxtxD, sl_tx_action); RU_write(rxtxD, sl_tx_action);
free(rxtxD); free(rxtxD);
...@@ -827,7 +828,15 @@ void *UE_thread(void *arg) ...@@ -827,7 +828,15 @@ void *UE_thread(void *arg)
readFrame(UE, &tmp, true); readFrame(UE, &tmp, true);
} }
double ntn_ta_common = (mac->ntn_ta.N_common_ta_adj + mac->ntn_ta.N_UE_TA_adj) * 2;
int ntn_koffset = mac->ntn_ta.cell_specific_k_offset;
int duration_rx_to_tx = DURATION_RX_TO_TX;
int nr_slot_tx_offset = 0;
bool update_ntn_system_information = false;
while (!oai_exit) { while (!oai_exit) {
nr_slot_tx_offset = 0;
if (syncRunning) { if (syncRunning) {
notifiedFIFO_elt_t *res = pollNotifiedFIFO(&nf); notifiedFIFO_elt_t *res = pollNotifiedFIFO(&nf);
...@@ -935,14 +944,31 @@ void *UE_thread(void *arg) ...@@ -935,14 +944,31 @@ void *UE_thread(void *arg)
absolute_slot++; absolute_slot++;
TracyCFrameMark; TracyCFrameMark;
if (update_ntn_system_information) {
update_ntn_system_information = false;
int ta_offset =
UE->frame_parms.samples_per_subframe * 2 * (mac->ntn_ta.N_common_ta_adj + mac->ntn_ta.N_UE_TA_adj - ntn_ta_common);
UE->timing_advance += ta_offset;
timing_advance = ntn_koffset * 7680;
ntn_ta_common = mac->ntn_ta.N_common_ta_adj + mac->ntn_ta.N_UE_TA_adj;
}
if (ntn_koffset != mac->ntn_ta.cell_specific_k_offset && ntn_ta_common != mac->ntn_ta.N_common_ta_adj) {
ntn_koffset = mac->ntn_ta.cell_specific_k_offset;
NTN_UE_Koffset = ntn_koffset;
update_ntn_system_information = true;
nr_slot_tx_offset = mac->ntn_ta.cell_specific_k_offset % nb_slot_frame;
}
int slot_nr = absolute_slot % nb_slot_frame; int slot_nr = absolute_slot % nb_slot_frame;
nr_rxtx_thread_data_t curMsg = {0}; nr_rxtx_thread_data_t curMsg = {0};
curMsg.UE=UE; curMsg.UE=UE;
// update thread index for received subframe // update thread index for received subframe
curMsg.proc.nr_slot_rx = slot_nr; curMsg.proc.nr_slot_rx = slot_nr;
curMsg.proc.nr_slot_tx = (absolute_slot + DURATION_RX_TO_TX) % nb_slot_frame; curMsg.proc.nr_slot_tx = (absolute_slot + duration_rx_to_tx) % nb_slot_frame;
curMsg.proc.frame_rx = (absolute_slot / nb_slot_frame) % MAX_FRAME_NUMBER; curMsg.proc.frame_rx = (absolute_slot / nb_slot_frame) % MAX_FRAME_NUMBER;
curMsg.proc.frame_tx = ((absolute_slot + DURATION_RX_TO_TX) / nb_slot_frame) % MAX_FRAME_NUMBER; curMsg.proc.frame_tx = ((absolute_slot + duration_rx_to_tx) / nb_slot_frame) % MAX_FRAME_NUMBER;
if (UE->received_config_request) { if (UE->received_config_request) {
if (UE->sl_mode) { if (UE->sl_mode) {
curMsg.proc.rx_slot_type = sl_nr_ue_slot_select(sl_cfg, curMsg.proc.nr_slot_rx, TDD); curMsg.proc.rx_slot_type = sl_nr_ue_slot_select(sl_cfg, curMsg.proc.nr_slot_rx, TDD);
...@@ -995,11 +1021,11 @@ void *UE_thread(void *arg) ...@@ -995,11 +1021,11 @@ void *UE_thread(void *arg)
} }
// use previous timing_advance value to compute writeTimestamp // use previous timing_advance value to compute writeTimestamp
const openair0_timestamp writeTimestamp = rx_timestamp + fp->get_samples_slot_timestamp(slot_nr, fp, DURATION_RX_TO_TX) const openair0_timestamp writeTimestamp = rx_timestamp + fp->get_samples_slot_timestamp(slot_nr, fp, duration_rx_to_tx)
- firstSymSamp - UE->N_TA_offset - timing_advance; - firstSymSamp - UE->N_TA_offset - timing_advance;
// but use current UE->timing_advance value to compute writeBlockSize // but use current UE->timing_advance value to compute writeBlockSize
int writeBlockSize = fp->get_samples_per_slot((slot_nr + DURATION_RX_TO_TX) % nb_slot_frame, fp) - iq_shift_to_apply; int writeBlockSize = fp->get_samples_per_slot((slot_nr + duration_rx_to_tx) % nb_slot_frame, fp) - iq_shift_to_apply;
if (UE->timing_advance != timing_advance) { if (UE->timing_advance != timing_advance) {
writeBlockSize -= UE->timing_advance - timing_advance; writeBlockSize -= UE->timing_advance - timing_advance;
timing_advance = UE->timing_advance; timing_advance = UE->timing_advance;
...@@ -1025,6 +1051,7 @@ void *UE_thread(void *arg) ...@@ -1025,6 +1051,7 @@ void *UE_thread(void *arg)
curMsgTx->proc.timestamp_tx = writeTimestamp; curMsgTx->proc.timestamp_tx = writeTimestamp;
curMsgTx->UE = UE; curMsgTx->UE = UE;
curMsgTx->stream_status = stream_status; curMsgTx->stream_status = stream_status;
curMsgTx->proc.nr_slot_tx_offset = nr_slot_tx_offset;
int sync_to_previous_thread = stream_status == STREAM_STATUS_SYNCED ? 1 : 0; int sync_to_previous_thread = stream_status == STREAM_STATUS_SYNCED ? 1 : 0;
int slot = curMsgTx->proc.nr_slot_tx; int slot = curMsgTx->proc.nr_slot_tx;
...@@ -1034,6 +1061,9 @@ void *UE_thread(void *arg) ...@@ -1034,6 +1061,9 @@ void *UE_thread(void *arg)
curMsgTx); curMsgTx);
stream_status = STREAM_STATUS_SYNCED; stream_status = STREAM_STATUS_SYNCED;
tx_wait_for_dlsch[slot] = 0; tx_wait_for_dlsch[slot] = 0;
if (duration_rx_to_tx != DURATION_RX_TO_TX) {
duration_rx_to_tx = DURATION_RX_TO_TX;
}
} }
return NULL; return NULL;
......
...@@ -3,7 +3,7 @@ ...@@ -3,7 +3,7 @@
extern uint16_t NB_UE_INST; extern uint16_t NB_UE_INST;
static position_t **positionArray = 0; static position_t **positionArray = 0;
position_t *check_position(int Mod_id) void config_position_coordinates(int Mod_id)
{ {
AssertFatal(Mod_id < NB_UE_INST, "Mod_id must be less than NB_UE_INST. Mod_id:%d NB_UE_INST:%d", Mod_id, NB_UE_INST); AssertFatal(Mod_id < NB_UE_INST, "Mod_id must be less than NB_UE_INST. Mod_id:%d NB_UE_INST:%d", Mod_id, NB_UE_INST);
if (positionArray == NULL) { if (positionArray == NULL) {
...@@ -12,18 +12,17 @@ position_t *check_position(int Mod_id) ...@@ -12,18 +12,17 @@ position_t *check_position(int Mod_id)
if (!positionArray[Mod_id]) { if (!positionArray[Mod_id]) {
char positionName[64]; char positionName[64];
sprintf(positionName, "position%d", Mod_id); sprintf(positionName, "position%d", Mod_id);
positionArray[Mod_id] = (void *)init_position(positionName); positionArray[Mod_id] = (void *) init_position_coordinates(positionName);
} }
return (position_t *)positionArray[Mod_id];
} }
position_t *init_position(char *sectionName) position_t *init_position_coordinates(char *sectionName)
{ {
position_t *position = (position_t *)calloc(sizeof(position_t), 1); position_t *position = (position_t *)calloc(sizeof(position_t), 1);
paramdef_t position_params[] = POSITION_CONFIG_PARAMS_DEF; paramdef_t position_params[] = POSITION_CONFIG_PARAMS_DEF;
int ret = config_get(config_get_if(), position_params, sizeofArray(position_params), sectionName); int ret = config_get(config_get_if(), position_params, sizeofArray(position_params), sectionName);
AssertFatal(ret >= 0, "configuration couldn't be performed for position name: %s", sectionName); AssertFatal(ret >= 0, "configuration couldn't be performed for position name: %s", sectionName);
return position; return position;
} }
......
...@@ -32,7 +32,7 @@ typedef struct { ...@@ -32,7 +32,7 @@ typedef struct {
double positionZ; double positionZ;
} position_t; } position_t;
position_t *check_position(int Mod_id); void config_position_coordinates(int Mod_id);
position_t *init_position(char *sectionName); position_t *init_position_coordinates(char *sectionName);
position_t *get_position(int Mod_id); position_t *get_position(int Mod_id);
#endif #endif
\ No newline at end of file
...@@ -394,7 +394,6 @@ typedef struct PHY_VARS_NR_UE_s { ...@@ -394,7 +394,6 @@ typedef struct PHY_VARS_NR_UE_s {
uint8_t prs_active_gNBs; uint8_t prs_active_gNBs;
NR_DL_UE_HARQ_t dl_harq_processes[2][NR_MAX_DLSCH_HARQ_PROCESSES]; NR_DL_UE_HARQ_t dl_harq_processes[2][NR_MAX_DLSCH_HARQ_PROCESSES];
NR_UL_UE_HARQ_t ul_harq_processes[NR_MAX_ULSCH_HARQ_PROCESSES]; NR_UL_UE_HARQ_t ul_harq_processes[NR_MAX_ULSCH_HARQ_PROCESSES];
//Paging parameters //Paging parameters
uint32_t IMSImod1024; uint32_t IMSImod1024;
uint32_t PF; uint32_t PF;
...@@ -540,6 +539,10 @@ typedef struct { ...@@ -540,6 +539,10 @@ typedef struct {
int gNB_id; int gNB_id;
/// NR slot index within frame_tx [0 .. slots_per_frame - 1] to act upon for transmission /// NR slot index within frame_tx [0 .. slots_per_frame - 1] to act upon for transmission
int nr_slot_tx; int nr_slot_tx;
/// NR slot index tx offset to resume
/// in case of NTN, tx_offset can be changed dynamically via SIB19
/// we need to notify the right tx thread slot based on TX offset change
int nr_slot_tx_offset;
int rx_slot_type; int rx_slot_type;
/// NR slot index within frame_rx [0 .. slots_per_frame - 1] to act upon for transmission /// NR slot index within frame_rx [0 .. slots_per_frame - 1] to act upon for transmission
int nr_slot_rx; int nr_slot_rx;
......
...@@ -1777,10 +1777,12 @@ void nr_rrc_mac_config_req_sib19_r17(module_id_t module_id, NR_SIB19_r17_t *sib1 ...@@ -1777,10 +1777,12 @@ void nr_rrc_mac_config_req_sib19_r17(module_id_t module_id, NR_SIB19_r17_t *sib1
// populate ntn_ta structure from mac // populate ntn_ta structure from mac
// if ephemerisInfo_r17 present in SIB19 // if ephemerisInfo_r17 present in SIB19
if (mac->sc_info.ntn_Config_r17->ephemerisInfo_r17 && mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17 struct NR_EphemerisInfo_r17 *ephemeris_info = mac->sc_info.ntn_Config_r17->ephemerisInfo_r17;
&& (mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17->positionX_r17 != 0 struct NR_PositionVelocity_r17 *position_velocity = mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17;
|| mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17->positionY_r17 != 0
|| mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17->positionZ_r17 != 0)) { if (ephemeris_info && position_velocity
&& (position_velocity->positionX_r17 != 0 || position_velocity->positionY_r17 != 0
|| position_velocity->positionZ_r17 != 0)) {
mac->ntn_ta.N_UE_TA_adj = mac->ntn_ta.N_UE_TA_adj =
calculate_ue_sat_ta(get_position(module_id), mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17); calculate_ue_sat_ta(get_position(module_id), mac->sc_info.ntn_Config_r17->ephemerisInfo_r17->choice.positionVelocity_r17);
} }
......
...@@ -923,7 +923,7 @@ void nr_get_RA_window(NR_UE_MAC_INST_t *mac) ...@@ -923,7 +923,7 @@ void nr_get_RA_window(NR_UE_MAC_INST_t *mac)
NR_RACH_ConfigCommon_t *setup = mac->current_UL_BWP->rach_ConfigCommon; NR_RACH_ConfigCommon_t *setup = mac->current_UL_BWP->rach_ConfigCommon;
AssertFatal(&setup->rach_ConfigGeneric != NULL, "In %s: FATAL! rach_ConfigGeneric is NULL...\n", __FUNCTION__); AssertFatal(&setup->rach_ConfigGeneric != NULL, "In %s: FATAL! rach_ConfigGeneric is NULL...\n", __FUNCTION__);
const double ta_Common_ms = get_ta_Common_ms(mac->sc_info.ntn_Config_r17); const double ta_Common_ms = get_ta_Common_ms(&mac->ntn_ta);
const int mu = mac->current_DL_BWP->scs; const int mu = mac->current_DL_BWP->scs;
const int slots_per_ms = nr_slots_per_frame[mu] / 10; const int slots_per_ms = nr_slots_per_frame[mu] / 10;
......
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