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openairinterface5g/openair2/LAYER2/NR_MAC_UE/nr_ue_dci_configuration.c
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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/* \file nr_ue_dci_configuration.c
* \brief functions for generating dci search procedures based on RRC Serving Cell Group Configuration
* \author R. Knopp, G. Casati
* \date 2020
* \version 0.2
* \company Eurecom, Fraunhofer IIS
* \email: knopp@eurecom.fr, guido.casati@iis.fraunhofer.de
* \note
* \warning
*/
#include "mac_proto.h"
#include "mac_defs.h"
#include "assertions.h"
#include "LAYER2/NR_MAC_UE/mac_extern.h"
#include "mac_defs.h"
#include "common/utils/nr/nr_common.h"
#include "executables/softmodem-common.h"
#include <stdio.h>
#include "nfapi_nr_interface.h"
#ifdef NR_PDCCH_DCI_TOOLS_DEBUG
#define LOG_DCI_D(a...) printf("\t\t<-NR_PDCCH_DCI_TOOLS_DEBUG (nr_extract_dci_info) ->" a)
#else
#define LOG_DCI_D(a...)
#endif
#define LOG_DCI_PARM(a...) LOG_D(PHY,"\t<-NR_PDCCH_DCI_TOOLS_DEBUG (nr_generate_ue_ul_dlsch_params_from_dci)" a)
//#define DEBUG_DCI
void fill_dci_search_candidates(NR_SearchSpace_t *ss,
fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15,
int slot, int rnti) {
LOG_D(NR_MAC,"Filling search candidates for DCI\n");
uint8_t aggregation;
uint8_t number_of_candidates=0;
rel15->number_of_candidates=0;
int i=0;
uint32_t Y = 0;
if (slot >= 0)
Y = get_Y(ss, slot, rnti);
for (int maxL=16;maxL>0;maxL>>=1) {
find_aggregation_candidates(&aggregation,
&number_of_candidates,
ss,maxL);
if (number_of_candidates>0) {
LOG_D(NR_MAC,"L %d, number of candidates %d, aggregation %d\n",maxL,number_of_candidates,aggregation);
rel15->number_of_candidates += number_of_candidates;
int N_cce_sym = 0; // nb of rbs of coreset per symbol
for (int i=0;i<6;i++) {
for (int t=0;t<8;t++) {
N_cce_sym+=((rel15->coreset.frequency_domain_resource[i]>>t)&1);
}
}
int N_cces = N_cce_sym*rel15->coreset.duration;
for (int j=0; j<number_of_candidates; i++,j++) {
int first_cce = aggregation * (( Y + CEILIDIV((j*N_cces),(aggregation*number_of_candidates)) + 0 ) % CEILIDIV(N_cces,aggregation));
LOG_D(NR_MAC,"Candidate %d of %d first_cce %d (L %d N_cces %d Y %d)\n", j, number_of_candidates, first_cce, aggregation, N_cces, Y);
rel15->CCE[i] = first_cce;
rel15->L[i] = aggregation;
}
}
}
}
void config_dci_pdu(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15, fapi_nr_dl_config_request_t *dl_config, int rnti_type, int ss_id)
{
uint16_t monitoringSymbolsWithinSlot = 0;
int sps = 0;
NR_UE_DL_BWP_t *current_DL_BWP = &mac->current_DL_BWP;
NR_UE_UL_BWP_t *current_UL_BWP = &mac->current_UL_BWP;
NR_BWP_Id_t dl_bwp_id = current_DL_BWP ? current_DL_BWP->bwp_id : 0;
NR_SearchSpace_t *ss;
NR_ControlResourceSet_t *coreset;
if(ss_id>=0) {
if (rnti_type == NR_RNTI_TC || rnti_type == NR_RNTI_RA) {
ss = mac->ra.ss;
AssertFatal(mac->ra.ss->searchSpaceId == ss_id,"Search Space id %d does not correspond to the one in ra->ss %ld for RA procedures\n",
ss_id,mac->ra.ss->searchSpaceId);
}
else
ss = mac->SSpace[dl_bwp_id][ss_id-1];
}
else
ss = mac->search_space_zero;
uint8_t coreset_id = *ss->controlResourceSetId;
if(coreset_id > 0) {
coreset = mac->coreset[dl_bwp_id][coreset_id - 1];
rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG;
} else {
coreset = mac->coreset0;
if(rnti_type == NR_RNTI_SI) {
rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_MIB_SIB1;
} else {
rel15->coreset.CoreSetType = NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG_CSET_0;
}
}
rel15->coreset.duration = coreset->duration;
for (int i = 0; i < 6; i++)
rel15->coreset.frequency_domain_resource[i] = coreset->frequencyDomainResources.buf[i];
rel15->coreset.CceRegMappingType = coreset->cce_REG_MappingType.present ==
NR_ControlResourceSet__cce_REG_MappingType_PR_interleaved ? FAPI_NR_CCE_REG_MAPPING_TYPE_INTERLEAVED : FAPI_NR_CCE_REG_MAPPING_TYPE_NON_INTERLEAVED;
if (rel15->coreset.CceRegMappingType == FAPI_NR_CCE_REG_MAPPING_TYPE_INTERLEAVED) {
struct NR_ControlResourceSet__cce_REG_MappingType__interleaved *interleaved = coreset->cce_REG_MappingType.choice.interleaved;
rel15->coreset.RegBundleSize = (interleaved->reg_BundleSize == NR_ControlResourceSet__cce_REG_MappingType__interleaved__reg_BundleSize_n6) ? 6 : (2 + interleaved->reg_BundleSize);
rel15->coreset.InterleaverSize = (interleaved->interleaverSize == NR_ControlResourceSet__cce_REG_MappingType__interleaved__interleaverSize_n6) ? 6 : (2 + interleaved->interleaverSize);
rel15->coreset.ShiftIndex = interleaved->shiftIndex != NULL ? *interleaved->shiftIndex : mac->physCellId;
} else {
rel15->coreset.RegBundleSize = 0;
rel15->coreset.InterleaverSize = 0;
rel15->coreset.ShiftIndex = 0;
}
rel15->coreset.precoder_granularity = coreset->precoderGranularity;
// Scrambling RNTI
if (coreset->pdcch_DMRS_ScramblingID) {
rel15->coreset.pdcch_dmrs_scrambling_id = *coreset->pdcch_DMRS_ScramblingID;
rel15->coreset.scrambling_rnti = mac->crnti;
} else {
rel15->coreset.pdcch_dmrs_scrambling_id = mac->physCellId;
rel15->coreset.scrambling_rnti = 0;
}
// loop over RNTI type and configure resource allocation for DCI
for (int i = 0; i < rel15->num_dci_options; i++) {
rel15->dci_type_options[i] = ss->searchSpaceType->present;
const int dci_format = rel15->dci_format_options[i];
uint16_t alt_size = 0;
if(current_DL_BWP) {
// computing alternative size for padding
dci_pdu_rel15_t temp_pdu;
if(dci_format == NR_DL_DCI_FORMAT_1_0)
alt_size = nr_dci_size(current_DL_BWP, current_UL_BWP,
mac->cg, &temp_pdu,
NR_UL_DCI_FORMAT_0_0, rnti_type, coreset, dl_bwp_id,
ss->searchSpaceType->present, mac->type0_PDCCH_CSS_config.num_rbs, 0);
if(dci_format == NR_UL_DCI_FORMAT_0_0)
alt_size = nr_dci_size(current_DL_BWP, current_UL_BWP,
mac->cg, &temp_pdu,
NR_DL_DCI_FORMAT_1_0, rnti_type, coreset, dl_bwp_id,
ss->searchSpaceType->present, mac->type0_PDCCH_CSS_config.num_rbs, 0);
}
rel15->dci_length_options[i] = nr_dci_size(current_DL_BWP, current_UL_BWP,
mac->cg, &mac->def_dci_pdu_rel15[dci_format],
dci_format, NR_RNTI_TC, coreset, dl_bwp_id,
ss->searchSpaceType->present, mac->type0_PDCCH_CSS_config.num_rbs, alt_size);
rel15->BWPStart = coreset_id == 0 ? mac->type0_PDCCH_CSS_config.cset_start_rb : current_DL_BWP->BWPStart;
rel15->BWPSize = coreset_id == 0 ? mac->type0_PDCCH_CSS_config.num_rbs : current_DL_BWP->BWPSize;
switch(rnti_type) {
case NR_RNTI_C:
// we use DL BWP dedicated
sps = current_DL_BWP->cyclicprefix ? 12 : 14;
// for SPS=14 8 MSBs in positions 13 down to 6
monitoringSymbolsWithinSlot = (ss->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | (ss->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
rel15->rnti = mac->crnti;
rel15->SubcarrierSpacing = current_DL_BWP->scs;
break;
case NR_RNTI_RA:
// we use the initial DL BWP
sps = current_DL_BWP->cyclicprefix == NULL ? 14 : 12;
monitoringSymbolsWithinSlot = (ss->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | (ss->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
rel15->rnti = mac->ra.ra_rnti;
rel15->SubcarrierSpacing = current_DL_BWP->scs;
break;
case NR_RNTI_P:
break;
case NR_RNTI_CS:
break;
case NR_RNTI_TC:
// we use the initial DL BWP
sps = current_DL_BWP->cyclicprefix == NULL ? 14 : 12;
monitoringSymbolsWithinSlot = (ss->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | (ss->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
rel15->rnti = mac->ra.t_crnti;
rel15->SubcarrierSpacing = current_DL_BWP->scs;
break;
case NR_RNTI_SP_CSI:
break;
case NR_RNTI_SI:
sps=14;
// for SPS=14 8 MSBs in positions 13 down to 6
monitoringSymbolsWithinSlot = (ss->monitoringSymbolsWithinSlot->buf[0]<<(sps-8)) | (ss->monitoringSymbolsWithinSlot->buf[1]>>(16-sps));
rel15->rnti = SI_RNTI; // SI-RNTI - 3GPP TS 38.321 Table 7.1-1: RNTI values
if(mac->frequency_range == FR1)
rel15->SubcarrierSpacing = mac->mib->subCarrierSpacingCommon;
else
rel15->SubcarrierSpacing = mac->mib->subCarrierSpacingCommon + 2;
break;
case NR_RNTI_SFI:
break;
case NR_RNTI_INT:
break;
case NR_RNTI_TPC_PUSCH:
break;
case NR_RNTI_TPC_PUCCH:
break;
case NR_RNTI_TPC_SRS:
break;
default:
break;
}
}
for (int i = 0; i < sps; i++) {
if ((monitoringSymbolsWithinSlot >> (sps - 1 - i)) & 1) {
rel15->coreset.StartSymbolIndex = i;
break;
}
}
#ifdef DEBUG_DCI
LOG_D(MAC, "[DCI_CONFIG] Configure DCI PDU: rnti_type %d BWPSize %d BWPStart %d rel15->SubcarrierSpacing %d rel15->dci_format %d rel15->dci_length %d sps %d monitoringSymbolsWithinSlot %d \n",
rnti_type,
rel15->BWPSize,
rel15->BWPStart,
rel15->SubcarrierSpacing,
rel15->dci_format_options[0],
rel15->dci_length_options[0],
sps,
monitoringSymbolsWithinSlot);
#endif
// add DCI
dl_config->dl_config_list[dl_config->number_pdus].pdu_type = FAPI_NR_DL_CONFIG_TYPE_DCI;
dl_config->number_pdus += 1;
}
void ue_dci_configuration(NR_UE_MAC_INST_t *mac, fapi_nr_dl_config_request_t *dl_config, frame_t frame, int slot) {
RA_config_t *ra = &mac->ra;
int ss_id;
uint8_t bwp_id = mac->current_DL_BWP.bwp_id;
//NR_ServingCellConfig_t *scd = mac->scg->spCellConfig->spCellConfigDedicated;
NR_BWP_DownlinkDedicated_t *bwpd = (bwp_id>0) ? mac->DLbwp[bwp_id-1]->bwp_Dedicated : mac->cg->spCellConfig->spCellConfigDedicated->initialDownlinkBWP;
NR_BWP_DownlinkCommon_t *bwp_Common = (bwp_id>0) ? mac->DLbwp[bwp_id-1]->bwp_Common : &mac->scc_SIB->downlinkConfigCommon.initialDownlinkBWP;
LOG_D(NR_MAC, "[DCI_CONFIG] ra_rnti %p (%x) crnti %p (%x) t_crnti %p (%x)\n", &ra->ra_rnti, ra->ra_rnti, &mac->crnti, mac->crnti, &ra->t_crnti, ra->t_crnti);
// loop over all available SS for bwp_id
if (bwpd) {
for (ss_id = 1; ss_id <= FAPI_NR_MAX_SS; ss_id++){
if(mac->SSpace[bwp_id][ss_id-1]==NULL) {
continue;
}
LOG_D(NR_MAC, "[DCI_CONFIG] ss_id %d\n",ss_id);
NR_SearchSpace_t *ss = mac->SSpace[bwp_id][ss_id-1];
AssertFatal(ss_id == ss->searchSpaceId,"SS IDs don't correspond\n");
fapi_nr_dl_config_dci_dl_pdu_rel15_t *rel15 = &dl_config->dl_config_list[dl_config->number_pdus].dci_config_pdu.dci_config_rel15;
NR_SetupRelease_PDCCH_ConfigCommon_t *pdcch_ConfigCommon = bwp_Common->pdcch_ConfigCommon;
struct NR_PhysicalCellGroupConfig *phy_cgc = mac->cg->physicalCellGroupConfig;
switch (ss->searchSpaceType->present){
case NR_SearchSpace__searchSpaceType_PR_common:
// this is for CSSs, we use BWP common and pdcch_ConfigCommon
if (ss->searchSpaceType->choice.common->dci_Format0_0_AndFormat1_0){
// check available SS IDs
if (pdcch_ConfigCommon->choice.setup->ra_SearchSpace){
if (ss->searchSpaceId == *pdcch_ConfigCommon->choice.setup->ra_SearchSpace){
switch(ra->ra_state){
case WAIT_RAR:
LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type1-PDCCH common random access search space (RA-Msg2)\n");
rel15->num_dci_options = 1;
rel15->dci_format_options[0] = NR_DL_DCI_FORMAT_1_0;
if (get_softmodem_params()->sa) {
config_dci_pdu(mac, rel15, dl_config, NR_RNTI_RA, -1);
} else {
config_dci_pdu(mac, rel15, dl_config, NR_RNTI_RA, ss_id);
}
fill_dci_search_candidates(ss, rel15, -1, -1);
break;
case WAIT_CONTENTION_RESOLUTION:
LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type1-PDCCH common random access search space (RA-Msg4)\n");
rel15->num_dci_options = 1;
rel15->dci_format_options[0] = NR_DL_DCI_FORMAT_1_0;
config_dci_pdu(mac, rel15, dl_config, NR_RNTI_TC, -1);
fill_dci_search_candidates(ss, rel15, -1, -1);
break;
default:
break;
}
}
}
if (pdcch_ConfigCommon->choice.setup->searchSpaceSIB1){
if (ss->searchSpaceId == *pdcch_ConfigCommon->choice.setup->searchSpaceSIB1){
// Configure monitoring of PDCCH candidates in Type0-PDCCH common search space on the MCG
//LOG_W(MAC, "[DCI_CONFIG] This seach space should not be configured yet...");
}
}
if (pdcch_ConfigCommon->choice.setup->searchSpaceOtherSystemInformation){
if (ss->searchSpaceId == *pdcch_ConfigCommon->choice.setup->searchSpaceOtherSystemInformation){
// Configure monitoring of PDCCH candidates in Type0-PDCCH common search space on the MCG
//LOG_W(MAC, "[DCI_CONFIG] This seach space should not be configured yet...");
}
}
if (pdcch_ConfigCommon->choice.setup->pagingSearchSpace){
if (ss->searchSpaceId == *pdcch_ConfigCommon->choice.setup->pagingSearchSpace){
// Configure monitoring of PDCCH candidates in Type2-PDCCH common search space on the MCG
//LOG_W(MAC, "[DCI_CONFIG] This seach space should not be configured yet...");
}
}
if (phy_cgc){
if (phy_cgc->cs_RNTI){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type3-PDCCH common search space for dci_Format0_0_AndFormat1_0 with CRC scrambled by CS-RNTI...\n");
LOG_W(MAC, "[DCI_CONFIG] This RNTI should not be configured yet...\n");
}
if (phy_cgc->ext1){
if (phy_cgc->ext1->mcs_C_RNTI){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in user specific search space for dci_Format0_0_AndFormat1_0 with CRC scrambled by MCS-C-RNTI...\n");
LOG_W(MAC, "[DCI_CONFIG] This RNTI should not be configured yet...\n");
}
}
}
} // end DCI 00 and 01
// DCI 2_0
if (ss->searchSpaceType->choice.common->dci_Format2_0){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type3-PDCCH common search space for DCI format 2_0 with CRC scrambled by SFI-RNTI \n");
LOG_W(MAC, "[DCI_CONFIG] This format should not be configured yet...\n");
}
// DCI 2_1
if (ss->searchSpaceType->choice.common->dci_Format2_1){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type3-PDCCH common search space for DCI format 2_1 with CRC scrambled by INT-RNTI \n");
LOG_W(MAC, "[DCI_CONFIG] This format should not be configured yet...\n");
}
// DCI 2_2
if (ss->searchSpaceType->choice.common->dci_Format2_2){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type3-PDCCH common search space for DCI format 2_2 with CRC scrambled by TPC-RNTI \n");
LOG_W(MAC, "[DCI_CONFIG] This format should not be configured yet...\n");
}
// DCI 2_3
if (ss->searchSpaceType->choice.common->dci_Format2_3){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in Type3-PDCCH common search space for DCI format 2_3 with CRC scrambled by TPC-SRS-RNTI \n");
LOG_W(MAC, "[DCI_CONFIG] This format should not be configured yet...\n");
}
break;
case NR_SearchSpace__searchSpaceType_PR_ue_Specific:
// this is an USS
if (ss->searchSpaceType->choice.ue_Specific &&
ss->searchSpaceType->choice.ue_Specific->dci_Formats == NR_SearchSpace__searchSpaceType__ue_Specific__dci_Formats_formats0_1_And_1_1 &&
(ra->ra_state == RA_SUCCEEDED || get_softmodem_params()->phy_test) &&
mac->crnti > 0) {
// Monitors DCI 01 and 11 scrambled with C-RNTI, or CS-RNTI(s), or SP-CSI-RNTI
LOG_D(NR_MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in the user specific search space\n");
rel15->num_dci_options = 2;
rel15->dci_format_options[0] = NR_DL_DCI_FORMAT_1_1;
rel15->dci_format_options[1] = NR_UL_DCI_FORMAT_0_1;
config_dci_pdu(mac, rel15, dl_config, NR_RNTI_C, ss_id);
fill_dci_search_candidates(ss, rel15, slot, mac->crnti);
//#ifdef DEBUG_DCI
LOG_D(NR_MAC, "[DCI_CONFIG] ss %d ue_Specific %p searchSpaceType->present %d dci_Formats %d\n",
ss_id,
ss->searchSpaceType->choice.ue_Specific,
(int)ss->searchSpaceType->present,
(int)ss->searchSpaceType->choice.ue_Specific->dci_Formats);
//#endif
}
if (phy_cgc){
if (phy_cgc->cs_RNTI){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in user specific search space for dci_Format0_0_AndFormat1_0 with CRC scrambled by CS-RNTI...\n");
LOG_W(MAC, "[DCI_CONFIG] This RNTI should not be configured yet...");
}
if (phy_cgc->sp_CSI_RNTI){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in user specific search space for dci_Format0_0_AndFormat1_0 with CRC scrambled by SP-CSI-RNTI...\n");
LOG_W(MAC, "[DCI_CONFIG] This RNTI should not be configured yet...");
}
if (phy_cgc->ext1 &&
phy_cgc->ext1->mcs_C_RNTI){
LOG_D(MAC, "[DCI_CONFIG] Configure monitoring of PDCCH candidates in user specific search space for dci_Format0_0_AndFormat1_0 with CRC scrambled by MCS-C-RNTI...\n");
LOG_W(MAC, "[DCI_CONFIG] This RNTI should not be configured yet...");
}
}
break;
default:
AssertFatal(1 == 0, "[DCI_CONFIG] Unrecognized search space type...");
break;
} // switch searchspace
} // for ss_id
}
else {
AssertFatal(1==0,"Handle DCI searching when CellGroup without dedicated BWP\n");
}
}
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