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Commit abb894be authored by rmagueta's avatar rmagueta
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Draft RA-Msg4 at gNB

parent ce5b59c9
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Showing with 103 additions and 41 deletions
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_RA.c
View file @ abb894be
......@@ -862,8 +862,9 @@ void nr_generate_Msg2(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
i = 0;
}
}
if (rbStart > (BWPSize - rbSize)) {
LOG_E(MAC, "%s(): cannot find free vrb_map for RA RNTI %04x!\n", __func__, ra->RA_rnti);
LOG_E(NR_MAC, "%s(): cannot find free vrb_map for RA RNTI %04x!\n", __func__, ra->RA_rnti);
return;
}
......@@ -1070,17 +1071,64 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
int NrOfSymbols_tmp = 0;
int x_Overhead = 0;
int time_domain_assignment = 0;
int rbStart = 0;
int rbSize = 0;
uint8_t nr_of_candidates = 0;
uint8_t aggregation_level = 0;
uint16_t *vrb_map = cc[CC_id].vrb_map;
NR_SearchSpace_t *ss = nr_mac->sched_ctrlCommon->search_space;
NR_BWP_Downlink_t *bwp = nr_mac->sched_ctrlCommon->active_bwp;
NR_ControlResourceSet_t *coreset = nr_mac->sched_ctrlCommon->coreset;
NR_ServingCellConfigCommon_t *scc = cc->ServingCellConfigCommon;
nfapi_nr_dl_tti_request_body_t *dl_req = &nr_mac->DL_req[CC_id].dl_tti_request_body;
long BWPSize = NRRIV2BW(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
long BWPStart = NRRIV2PRBOFFSET(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
long dmrsConfigType = bwp->bwp_Dedicated->pdsch_Config->choice.setup->dmrs_DownlinkForPDSCH_MappingTypeA->choice.setup->dmrs_Type == NULL ? 0 : 1;
uint8_t N_PRB_DMRS = 0;
if (dmrsConfigType==NFAPI_NR_DMRS_TYPE1) {
N_PRB_DMRS = nr_mac->sched_ctrlCommon->numDmrsCdmGrpsNoData * 6;
}
else {
N_PRB_DMRS = nr_mac->sched_ctrlCommon->numDmrsCdmGrpsNoData * 4;
}
uint8_t N_DMRS_SLOT = get_num_dmrs_symbols(NULL,
RC.nrmac[module_idP]->common_channels->ServingCellConfigCommon->dmrs_TypeA_Position,
NrOfSymbols,
StartSymbolIndex);
uint8_t mac_sdu[30];
uint16_t mac_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, CCCH, ra->rnti, 1, mac_sdu);
LOG_I(NR_MAC, "[gNB %d] Got %d bytes from CCCH\n", module_idP, mac_sdu_length);
int header_length_total = 1 + 6 + 2 + (mac_sdu_length >= 128);
int payload_length = mac_sdu_length + header_length_total;
uint32_t TBS = 0;
do {
rbSize++;
TBS = nr_compute_tbs(nr_get_Qm_dl(nr_mac->sched_ctrlCommon->mcs, nr_mac->sched_ctrlCommon->mcsTableIdx),
nr_get_code_rate_dl(nr_mac->sched_ctrlCommon->mcs, nr_mac->sched_ctrlCommon->mcsTableIdx),
rbSize, NrOfSymbols, N_PRB_DMRS * N_DMRS_SLOT,0, 0,1) >> 3;
} while (rbStart + rbSize < BWPSize && !vrb_map[rbStart + rbSize] && TBS < payload_length);
for (int i = 0; (i < rbSize) && (rbStart <= (BWPSize - rbSize)); i++) {
if (vrb_map[rbStart + i]) {
rbStart += i;
i = 0;
}
}
if (rbStart > (BWPSize - rbSize)) {
LOG_E(NR_MAC, "%s(): cannot find free vrb_map for RA RNTI %04x!\n", __func__, ra->RA_rnti);
return;
}
// Checking if the DCI allocation is feasible in current subframe
nfapi_nr_dl_tti_request_body_t *dl_req = &nr_mac->DL_req[CC_id].dl_tti_request_body;
if (dl_req->nPDUs > NFAPI_NR_MAX_DL_TTI_PDUS - 2) {
LOG_I(NR_MAC, "[RAPROC] Subframe %d: FAPI DL structure is full, skip scheduling UE %d\n", slotP, ra->rnti);
return;
......@@ -1100,8 +1148,6 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
return;
}
nfapi_nr_pdu_t *tx_req = &nr_mac->TX_req[CC_id].pdu_list[nr_mac->TX_req[CC_id].Number_of_PDUs];
// look up the PDCCH PDU for this CC, BWP, and CORESET. If it does not exist, create it. This is especially
// important if we have multiple RAs, and the DLSCH has to reuse them, so we need to mark them
const int bwpid = bwp->bwp_Id;
......@@ -1142,8 +1188,8 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
// information to data and is reset every slot.
const int pduindex = nr_mac->pdu_index[CC_id]++;
pdsch_pdu_rel15->pduIndex = pduindex;
pdsch_pdu_rel15->BWPSize = NRRIV2BW(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
pdsch_pdu_rel15->BWPStart = NRRIV2PRBOFFSET(scc->downlinkConfigCommon->initialDownlinkBWP->genericParameters.locationAndBandwidth, MAX_BWP_SIZE);
pdsch_pdu_rel15->BWPSize = BWPSize;
pdsch_pdu_rel15->BWPStart = BWPStart;
pdsch_pdu_rel15->SubcarrierSpacing = bwp->bwp_Common->genericParameters.subcarrierSpacing;
pdsch_pdu_rel15->CyclicPrefix = 0;
pdsch_pdu_rel15->NrOfCodewords = 1;
......@@ -1172,8 +1218,8 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
pdsch_pdu_rel15->numDmrsCdmGrpsNoData = 2;
pdsch_pdu_rel15->dmrsPorts = 1;
pdsch_pdu_rel15->resourceAlloc = 1;
pdsch_pdu_rel15->rbStart = 0;
pdsch_pdu_rel15->rbSize = 6;
pdsch_pdu_rel15->rbStart = rbStart;
pdsch_pdu_rel15->rbSize = rbSize;
pdsch_pdu_rel15->VRBtoPRBMapping = 0;
for (int i=0; i<bwp->bwp_Common->pdsch_ConfigCommon->choice.setup->pdsch_TimeDomainAllocationList->list.count; i++) {
......@@ -1185,7 +1231,6 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
time_domain_assignment = i; // this is short PDSCH added to the config to fit mixed slot
}
}
AssertFatal(StartSymbolIndex >= 0, "StartSymbolIndex is negative\n");
pdsch_pdu_rel15->StartSymbolIndex = StartSymbolIndex;
......@@ -1245,20 +1290,42 @@ void nr_generate_Msg4(module_id_t module_idP, int CC_id, frame_t frameP, sub_fra
x_Overhead = 0;
nr_get_tbs_dl(&dl_tti_pdsch_pdu->pdsch_pdu, x_Overhead, pdsch_pdu_rel15->numDmrsCdmGrpsNoData, dci_payload.tb_scaling);
uint8_t payload[] = {0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08};
const int cont_res_len = 1 + 6;
const int post_padding = TBS > header_length_total + payload_length + cont_res_len;
LOG_D(NR_MAC, "Configuring DL_TX in %d.%d: TBS %d, header_length_total %d, sdu_length_total %d,cont_res_len %d, post_padding %d \n", frameP, slotP,
TBS, header_length_total, payload_length, cont_res_len, post_padding);
// DL TX request
tx_req->PDU_length = pdsch_pdu_rel15->TBSize[0];
nfapi_nr_pdu_t *tx_req = &nr_mac->TX_req[CC_id].pdu_list[nr_mac->TX_req[CC_id].Number_of_PDUs];
uint8_t payload[50] = {};
const int offset = nr_write_ce_dlsch_pdu(module_idP, nr_mac->sched_ctrlCommon, (unsigned char *)payload, 255, ra->cont_res_id);
((NR_MAC_SUBHEADER_SHORT *) &payload[offset])->R = 0;
((NR_MAC_SUBHEADER_SHORT *) &payload[offset])->F = 0;
((NR_MAC_SUBHEADER_SHORT *) &payload[offset])->LCID = DL_SCH_LCID_CCCH;
((NR_MAC_SUBHEADER_SHORT *) &payload[offset])->L = mac_sdu_length*8;
memcpy(&payload[9], mac_sdu, mac_sdu_length);
if (post_padding > 0) {
for (int j = 0; j < TBS - payload_length; j++)
payload[payload_length + j] = 0;
}
bzero(tx_req->TLVs[0].value.direct,MAX_NR_DLSCH_PAYLOAD_BYTES);
memcpy(&tx_req->TLVs[0].value.direct, payload, payload_length);
tx_req->PDU_length = TBS;
tx_req->PDU_index = pduindex;
tx_req->num_TLV = 1;
tx_req->TLVs[0].length = 8;
tx_req->TLVs[0].length = TBS + 2;
nr_mac->TX_req[CC_id].SFN = frameP;
nr_mac->TX_req[CC_id].Number_of_PDUs++;
nr_mac->TX_req[CC_id].Slot = slotP;
memcpy(tx_req->TLVs[0].value.direct, payload, tx_req->TLVs[0].length);
// Mark the corresponding RBs as used
uint16_t *vrb_map = cc[CC_id].vrb_map;
for (int rb = 0; rb < pdsch_pdu_rel15->rbSize; rb++) {
vrb_map[rb + pdsch_pdu_rel15->rbStart] = 1;
}
......
openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_bch.c
View file @ abb894be
......@@ -113,7 +113,7 @@ void schedule_nr_mib(module_id_t module_idP, frame_t frameP, sub_frame_t slotP,
dl_tti_request = &gNB->DL_req[CC_id];
dl_req = &dl_tti_request->dl_tti_request_body;
mib_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, MIBCH, 1, &cc->MIB_pdu.payload[0]);
mib_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, MIBCH, 0, 1, &cc->MIB_pdu.payload[0]);
LOG_D(MAC, "Frame %d, slot %d: BCH PDU length %d\n", frameP, slotP, mib_sdu_length);
......@@ -473,7 +473,7 @@ void schedule_nr_sib1(module_id_t module_idP, frame_t frameP, sub_frame_t slotP)
// Get SIB1
uint8_t sib1_payload[NR_MAX_SIB_LENGTH/8];
uint8_t sib1_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, BCCH, 1, sib1_payload);
uint8_t sib1_sdu_length = mac_rrc_nr_data_req(module_idP, CC_id, frameP, BCCH, 0, 1, sib1_payload);
LOG_D(MAC,"sib1_sdu_length = %i\n", sib1_sdu_length);
LOG_D(MAC,"SIB1: \n");
for (int i=0;i<sib1_sdu_length;i++) LOG_D(MAC,"byte %d : %x\n",i,((uint8_t*)sib1_payload)[i]);
......
openair2/RRC/NR/L2_nr_interface.c
View file @ abb894be
......@@ -42,6 +42,7 @@
#include "NR_MIB.h"
#include "NR_BCCH-BCH-Message.h"
#include "rrc_gNB_UE_context.h"
extern RAN_CONTEXT_t RC;
......@@ -217,29 +218,22 @@ int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
const int CC_id,
const frame_t frameP,
const rb_id_t Srb_id,
const rnti_t rnti,
const uint8_t Nb_tb,
uint8_t *const buffer_pP ){
asn_enc_rval_t enc_rval;
uint8_t Sdu_size = 0;
uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
#ifdef DEBUG_RRC
LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id);
#endif
rrc_gNB_carrier_data_t *carrier;
NR_BCCH_BCH_Message_t *mib;
NR_SRB_INFO *srb_info;
char payload_size, *payload_pP;
carrier = &RC.nrrrc[Mod_idP]->carrier;
mib = &carrier->mib;
srb_info = &carrier->Srb0;
/* MIBCH */
// MIBCH
if ((Srb_id & RAB_OFFSET) == MIBCH) {
asn_enc_rval_t enc_rval;
uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
rrc_gNB_carrier_data_t *carrier = &RC.nrrrc[Mod_idP]->carrier;
NR_BCCH_BCH_Message_t *mib = &carrier->mib;
// Currently we are getting the pdcch_ConfigSIB1 from the configuration file.
// Uncomment this function for a dynamic pdcch_ConfigSIB1.
//channel_bandwidth_t min_channel_bw = bw_10MHz; // Must be obtained based on TS 38.101-1 Table 5.3.5-1
......@@ -269,7 +263,7 @@ int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
return (3);
}
/* TODO BCCH SIB1 SIBs */
// TODO BCCH SIB1 SIBs
if ((Srb_id & RAB_OFFSET ) == BCCH) {
memcpy(&buffer_pP[0],
RC.nrrrc[Mod_idP]->carrier.SIB1,
......@@ -278,25 +272,25 @@ int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
return RC.nrrrc[Mod_idP]->carrier.sizeof_SIB1;
}
/* CCCH */
// CCCH
if( (Srb_id & RAB_OFFSET ) == CCCH) {
//struct rrc_eNB_ue_context_s *ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP],rnti);
//if (ue_context_p == NULL) return(0);
//eNB_RRC_UE_t *ue_p = &ue_context_p->ue_context;
LOG_D(RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id);
// srb_info=&ue_p->Srb0;
char *payload_pP;
uint8_t Sdu_size = 0;
struct rrc_gNB_ue_context_s *ue_context_p = rrc_gNB_get_ue_context(RC.nrrrc[Mod_idP], rnti);
LOG_D(NR_RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id);
payload_size = srb_info->Tx_buffer.payload_size;
char payload_size = ue_context_p->ue_context.Srb0.Tx_buffer.payload_size;
// check if data is there for MAC
if (payload_size > 0) {
payload_pP = srb_info->Tx_buffer.Payload;
LOG_D(RRC,"[gNB %d] CCCH (%p) has %d bytes (dest: %p, src %p)\n", Mod_idP, srb_info, payload_size, buffer_pP, payload_pP);
payload_pP = ue_context_p->ue_context.Srb0.Tx_buffer.Payload;
LOG_D(NR_RRC,"[gNB %d] CCCH has %d bytes (dest: %p, src %p)\n", Mod_idP, payload_size, buffer_pP, payload_pP);
// Fill buffer
memcpy((void *)buffer_pP, (void*)payload_pP, payload_size);
Sdu_size = payload_size;
srb_info->Tx_buffer.payload_size = 0;
ue_context_p->ue_context.Srb0.Tx_buffer.payload_size = 0;
}
return Sdu_size;
}
......
openair2/RRC/NR/nr_rrc_proto.h
View file @ abb894be
......@@ -51,6 +51,7 @@ int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
const int CC_id,
const frame_t frameP,
const rb_id_t Srb_id,
const rnti_t rnti,
const uint8_t Nb_tb,
uint8_t *const buffer_pP );
......
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