Skip to content

O
OpenXG-RAN
Commit 8cb23179 authored by Robert Schmidt's avatar Robert Schmidt
Browse files
Options

Create PUSCH saved params struct to avoid recomputation

parent 0d860454
Show whitespace changes
Inline Side-by-side
Showing with 129 additions and 76 deletions
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c
View file @ 8cb23179
......@@ -213,6 +213,75 @@ int allocate_nr_CCEs(gNB_MAC_INST *nr_mac,
}
void nr_save_pusch_fields(const NR_ServingCellConfigCommon_t *scc,
const NR_BWP_Uplink_t *ubwp,
long dci_format,
int tda,
uint8_t num_dmrs_cdm_grps_no_data,
NR_sched_pusch_save_t *ps)
{
ps->dci_format = dci_format;
ps->time_domain_allocation = tda;
ps->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
const struct NR_PUSCH_TimeDomainResourceAllocationList *tdaList =
ubwp->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
const int startSymbolAndLength = tdaList->list.array[tda]->startSymbolAndLength;
SLIV2SL(startSymbolAndLength,
&ps->startSymbolIndex,
&ps->nrOfSymbols);
ps->pusch_Config = ubwp->bwp_Dedicated->pusch_Config->choice.setup;
if (!ps->pusch_Config->transformPrecoder)
ps->transform_precoding = !scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg3_transformPrecoder;
else
ps->transform_precoding = *ps->pusch_Config->transformPrecoder;
const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
if (ps->transform_precoding)
ps->mcs_table = get_pusch_mcs_table(ps->pusch_Config->mcs_Table,
0,
ps->dci_format,
NR_RNTI_C,
target_ss,
false);
else
ps->mcs_table = get_pusch_mcs_table(ps->pusch_Config->mcs_TableTransformPrecoder,
1,
ps->dci_format,
NR_RNTI_C,
target_ss,
false);
/* DMRS calculations */
ps->mapping_type = tdaList->list.array[tda]->mappingType;
ps->NR_DMRS_UplinkConfig =
ps->mapping_type == NR_PUSCH_TimeDomainResourceAllocation__mappingType_typeA
? ps->pusch_Config->dmrs_UplinkForPUSCH_MappingTypeA->choice.setup
: ps->pusch_Config->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup;
ps->dmrs_config_type = ps->NR_DMRS_UplinkConfig->dmrs_Type == NULL ? 0 : 1;
const pusch_dmrs_AdditionalPosition_t additional_pos =
ps->NR_DMRS_UplinkConfig->dmrs_AdditionalPosition == NULL
? 2
: (*ps->NR_DMRS_UplinkConfig->dmrs_AdditionalPosition ==
NR_DMRS_UplinkConfig__dmrs_AdditionalPosition_pos3
? 3
: *ps->NR_DMRS_UplinkConfig->dmrs_AdditionalPosition);
const pusch_maxLength_t pusch_maxLength =
ps->NR_DMRS_UplinkConfig->maxLength == NULL ? 1 : 2;
const uint16_t l_prime_mask = get_l_prime(ps->nrOfSymbols,
ps->mapping_type,
additional_pos,
pusch_maxLength);
ps->ul_dmrs_symb_pos = l_prime_mask << ps->startSymbolIndex;
uint8_t num_dmrs_symb = 0;
for(int i = ps->startSymbolIndex; i < ps->startSymbolIndex + ps->nrOfSymbols; i++)
num_dmrs_symb += (ps->ul_dmrs_symb_pos >> i) & 1;
ps->num_dmrs_symb = num_dmrs_symb;
ps->N_PRB_DMRS = ps->dmrs_config_type == 0
? num_dmrs_cdm_grps_no_data * 6
: num_dmrs_cdm_grps_no_data * 4;
}
void nr_configure_css_dci_initial(nfapi_nr_dl_tti_pdcch_pdu_rel15_t* pdcch_pdu,
nr_scs_e scs_common,
nr_scs_e pdcch_scs,
......
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c
View file @ 8cb23179
......@@ -573,77 +573,30 @@ void nr_schedule_ulsch(module_id_t module_id,
int dci_formats[2] = { f ? NR_UL_DCI_FORMAT_0_1 : NR_UL_DCI_FORMAT_0_0 , 0 };
int rnti_types[2] = { NR_RNTI_C, 0 };
//Resource Allocation in time domain
const int tda = sched_pusch->time_domain_allocation;
const struct NR_PUSCH_TimeDomainResourceAllocationList *tdaList =
sched_ctrl->active_ubwp->bwp_Common->pusch_ConfigCommon->choice.setup->pusch_TimeDomainAllocationList;
const int startSymbolAndLength = tdaList->list.array[tda]->startSymbolAndLength;
int StartSymbolIndex, NrOfSymbols;
SLIV2SL(startSymbolAndLength,&StartSymbolIndex,&NrOfSymbols);
NR_PUSCH_Config_t *pusch_Config = sched_ctrl->active_ubwp->bwp_Dedicated->pusch_Config->choice.setup;
uint8_t transform_precoding = 0;
if (!pusch_Config->transformPrecoder)
transform_precoding = !scc->uplinkConfigCommon->initialUplinkBWP->rach_ConfigCommon->choice.setup->msg3_transformPrecoder;
else
transform_precoding = *pusch_Config->transformPrecoder;
const int target_ss = NR_SearchSpace__searchSpaceType_PR_ue_Specific;
/* DMRS calculations */
const int mapping_type = tdaList->list.array[tda]->mappingType;
const NR_DMRS_UplinkConfig_t *NR_DMRS_UplinkConfig =
mapping_type == NR_PUSCH_TimeDomainResourceAllocation__mappingType_typeA
? pusch_Config->dmrs_UplinkForPUSCH_MappingTypeA->choice.setup
: pusch_Config->dmrs_UplinkForPUSCH_MappingTypeB->choice.setup;
const uint8_t dmrs_config_type = NR_DMRS_UplinkConfig->dmrs_Type == NULL ? 0 : 1;
const pusch_dmrs_AdditionalPosition_t additional_pos =
NR_DMRS_UplinkConfig->dmrs_AdditionalPosition == NULL
? 2
: (*NR_DMRS_UplinkConfig->dmrs_AdditionalPosition ==
NR_DMRS_UplinkConfig__dmrs_AdditionalPosition_pos3
? 3
: *NR_DMRS_UplinkConfig->dmrs_AdditionalPosition);
const pusch_maxLength_t pusch_maxLength =
NR_DMRS_UplinkConfig->maxLength == NULL ? 1 : 2;
uint16_t l_prime_mask = get_l_prime(NrOfSymbols, mapping_type, additional_pos, pusch_maxLength);
const uint16_t ul_dmrs_symb_pos = l_prime_mask << StartSymbolIndex;
uint8_t num_dmrs_symb = 0;
for(int i = StartSymbolIndex; i < StartSymbolIndex + NrOfSymbols; i++)
num_dmrs_symb += (ul_dmrs_symb_pos >> i) & 1;
const uint8_t num_dmrs_cdm_grps_no_data = 1;
const uint8_t N_PRB_DMRS = dmrs_config_type == 0
? num_dmrs_cdm_grps_no_data * 6
: num_dmrs_cdm_grps_no_data * 4;
NR_sched_pusch_save_t ps;
nr_save_pusch_fields(scc,
sched_ctrl->active_ubwp,
dci_formats[0],
tda,
num_dmrs_cdm_grps_no_data,
&ps);
/* Calculate TBS from MCS */
uint8_t mcs_table = 0;
if (transform_precoding)
mcs_table = get_pusch_mcs_table(pusch_Config->mcs_Table,
0,
dci_formats[0],
NR_RNTI_C,
target_ss,
false);
else
mcs_table = get_pusch_mcs_table(pusch_Config->mcs_TableTransformPrecoder,
1,
dci_formats[0],
NR_RNTI_C,
target_ss,
false);
const uint8_t mcs = sched_pusch->mcs;
uint16_t R = nr_get_code_rate_ul(mcs, mcs_table);
uint8_t Qm = nr_get_Qm_ul(mcs, mcs_table);
if (pusch_Config->tp_pi2BPSK
&& ((mcs_table == 3 && mcs < 2) || (mcs_table == 4 && mcs < 6))) {
uint16_t R = nr_get_code_rate_ul(mcs, ps.mcs_table);
uint8_t Qm = nr_get_Qm_ul(mcs, ps.mcs_table);
if (ps.pusch_Config->tp_pi2BPSK
&& ((ps.mcs_table == 3 && mcs < 2) || (ps.mcs_table == 4 && mcs < 6))) {
R >>= 1;
Qm <<= 1;
}
const uint32_t tb_size = nr_compute_tbs(Qm,
R,
sched_pusch->rbSize,
NrOfSymbols,
N_PRB_DMRS * num_dmrs_symb,
ps.nrOfSymbols,
ps.N_PRB_DMRS * ps.num_dmrs_symb,
0, // nb_rb_oh
0,
1 /* NrOfLayers */) >> 3;
......@@ -686,23 +639,23 @@ void nr_schedule_ulsch(module_id_t module_id,
pusch_pdu->target_code_rate = R;
pusch_pdu->qam_mod_order = Qm;
pusch_pdu->mcs_index = mcs;
pusch_pdu->mcs_table = mcs_table;
pusch_pdu->transform_precoding = transform_precoding;
if (pusch_Config->dataScramblingIdentityPUSCH)
pusch_pdu->data_scrambling_id = *pusch_Config->dataScramblingIdentityPUSCH;
pusch_pdu->mcs_table = ps.mcs_table;
pusch_pdu->transform_precoding = ps.transform_precoding;
if (ps.pusch_Config->dataScramblingIdentityPUSCH)
pusch_pdu->data_scrambling_id = *ps.pusch_Config->dataScramblingIdentityPUSCH;
else
pusch_pdu->data_scrambling_id = *scc->physCellId;
pusch_pdu->nrOfLayers = 1;
/* FAPI: DMRS */
pusch_pdu->ul_dmrs_symb_pos = ul_dmrs_symb_pos;
pusch_pdu->dmrs_config_type = dmrs_config_type;
pusch_pdu->ul_dmrs_symb_pos = ps.ul_dmrs_symb_pos;
pusch_pdu->dmrs_config_type = ps.dmrs_config_type;
if (pusch_pdu->transform_precoding) { // transform precoding disabled
long *scramblingid;
if (pusch_pdu->scid == 0)
scramblingid = NR_DMRS_UplinkConfig->transformPrecodingDisabled->scramblingID0;
scramblingid = ps.NR_DMRS_UplinkConfig->transformPrecodingDisabled->scramblingID0;
else
scramblingid = NR_DMRS_UplinkConfig->transformPrecodingDisabled->scramblingID1;
scramblingid = ps.NR_DMRS_UplinkConfig->transformPrecodingDisabled->scramblingID1;
if (scramblingid == NULL)
pusch_pdu->ul_dmrs_scrambling_id = *scc->physCellId;
else
......@@ -710,30 +663,30 @@ void nr_schedule_ulsch(module_id_t module_id,
}
else {
pusch_pdu->ul_dmrs_scrambling_id = *scc->physCellId;
if (NR_DMRS_UplinkConfig->transformPrecodingEnabled->nPUSCH_Identity != NULL)
pusch_pdu->pusch_identity = *NR_DMRS_UplinkConfig->transformPrecodingEnabled->nPUSCH_Identity;
if (ps.NR_DMRS_UplinkConfig->transformPrecodingEnabled->nPUSCH_Identity != NULL)
pusch_pdu->pusch_identity = *ps.NR_DMRS_UplinkConfig->transformPrecodingEnabled->nPUSCH_Identity;
else
pusch_pdu->pusch_identity = *scc->physCellId;
}
pusch_pdu->scid = 0; // DMRS sequence initialization [TS38.211, sec 6.4.1.1.1]
pusch_pdu->num_dmrs_cdm_grps_no_data = num_dmrs_cdm_grps_no_data;
pusch_pdu->num_dmrs_cdm_grps_no_data = ps.num_dmrs_cdm_grps_no_data;
pusch_pdu->dmrs_ports = 1;
/* FAPI: Pusch Allocation in frequency domain */
AssertFatal(pusch_Config->resourceAllocation == NR_PUSCH_Config__resourceAllocation_resourceAllocationType1,
AssertFatal(ps.pusch_Config->resourceAllocation == NR_PUSCH_Config__resourceAllocation_resourceAllocationType1,
"Only frequency resource allocation type 1 is currently supported\n");
pusch_pdu->resource_alloc = 1; //type 1
pusch_pdu->rb_start = sched_pusch->rbStart;
pusch_pdu->rb_size = sched_pusch->rbSize;
pusch_pdu->vrb_to_prb_mapping = 0;
if (pusch_Config->frequencyHopping==NULL)
if (ps.pusch_Config->frequencyHopping==NULL)
pusch_pdu->frequency_hopping = 0;
else
pusch_pdu->frequency_hopping = 1;
/* FAPI: Resource Allocation in time domain */
pusch_pdu->start_symbol_index = StartSymbolIndex;
pusch_pdu->nr_of_symbols = NrOfSymbols;
pusch_pdu->start_symbol_index = ps.startSymbolIndex;
pusch_pdu->nr_of_symbols = ps.nrOfSymbols;
/* PUSCH PDU */
pusch_pdu->pusch_data.rv_index = nr_rv_round_map[cur_harq->round];
......@@ -743,7 +696,7 @@ void nr_schedule_ulsch(module_id_t module_id,
pusch_pdu->pusch_data.num_cb = 0; //CBG not supported
/* PUSCH PTRS */
if (NR_DMRS_UplinkConfig->phaseTrackingRS != NULL) {
if (ps.NR_DMRS_UplinkConfig->phaseTrackingRS != NULL) {
// TODO to be fixed from RRC config
uint8_t ptrs_mcs1 = 2; // higher layer parameter in PTRS-UplinkConfig
uint8_t ptrs_mcs2 = 4; // higher layer parameter in PTRS-UplinkConfig
......
openair2/LAYER2/NR_MAC_gNB/mac_proto.h
View file @ 8cb23179
......@@ -297,6 +297,13 @@ void find_aggregation_candidates(uint8_t *aggregation_level,
long get_K2(NR_BWP_Uplink_t *ubwp, int time_domain_assignment, int mu);
void nr_save_pusch_fields(const NR_ServingCellConfigCommon_t *scc,
const NR_BWP_Uplink_t *ubwp,
long dci_format,
int tda,
uint8_t num_dmrs_cdm_grps_no_data,
NR_sched_pusch_save_t *ps);
uint8_t nr_get_tpc(int target, uint8_t cqi, int incr);
int get_spf(nfapi_nr_config_request_scf_t *cfg);
......
openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h
View file @ 8cb23179
......@@ -284,6 +284,30 @@ typedef struct NR_sched_pucch {
uint8_t resource_indicator;
} NR_sched_pucch;
/* this struct is a helper: as long as the TDA and DCI format remain the same
* over the same uBWP and search space, there is no need to recalculate all
* S/L, MCS table, or DMRS-related parameters over and over again. Hence, we
* store them in this struct for easy reference. */
typedef struct NR_sched_pusch_save {
int dci_format;
int time_domain_allocation;
uint8_t num_dmrs_cdm_grps_no_data;
int startSymbolIndex;
int nrOfSymbols;
NR_PUSCH_Config_t *pusch_Config;
uint8_t transform_precoding;
uint8_t mcs_table;
long mapping_type;
NR_DMRS_UplinkConfig_t *NR_DMRS_UplinkConfig;
uint16_t dmrs_config_type;
uint16_t ul_dmrs_symb_pos;
uint8_t num_dmrs_symb;
uint8_t N_PRB_DMRS;
} NR_sched_pusch_save_t;
typedef struct NR_sched_pusch {
int frame;
int slot;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment