#include "du_app_mac_inf.h"
#include "mac_sch_interface.h"
#include "sch.h"
+#include "sch_tmr.h"
#include "sch_utils.h"
/**
}
dlBrdcstAlloc->crnti = SI_RNTI;
- dmrs = cell->sib1SchCfg.sib1PdcchCfg.dci.pdschCfg.dmrs;
- freqAlloc = cell->sib1SchCfg.sib1PdcchCfg.dci.pdschCfg.pdschFreqAlloc;
- timeAlloc = cell->sib1SchCfg.sib1PdcchCfg.dci.pdschCfg.pdschTimeAlloc;
+ dmrs = cell->sib1SchCfg.sib1PdcchCfg.dci[0].pdschCfg.dmrs;
+ freqAlloc = cell->sib1SchCfg.sib1PdcchCfg.dci[0].pdschCfg.pdschFreqAlloc;
+ timeAlloc = cell->sib1SchCfg.sib1PdcchCfg.dci[0].pdschCfg.pdschTimeAlloc;
schDlSlotInfo = cell->schDlSlotInfo[slotTime.slot];
/* Find total symbols used including DMRS */
{
if(resrcInfo->SchPucchFormat.format0)
{
- ulSchedPucch->fdAlloc.resAlloc.type1.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
+ ulSchedPucch->fdAlloc.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
ulSchedPucch->pucchFormat = PUCCH_FORMAT_0;
ulSchedPucch->initialCyclicShift = resrcInfo->SchPucchFormat.format0->initialCyclicShift;
ulSchedPucch->tdAlloc.numSymb = resrcInfo->SchPucchFormat.format0->numSymbols;
{
if(resrcInfo->SchPucchFormat.format1)
{
- ulSchedPucch->fdAlloc.resAlloc.type1.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
+ ulSchedPucch->fdAlloc.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
ulSchedPucch->pucchFormat = PUCCH_FORMAT_1;
ulSchedPucch->initialCyclicShift = resrcInfo->SchPucchFormat.format1->initialCyclicShift;
ulSchedPucch->tdAlloc.numSymb = resrcInfo->SchPucchFormat.format1->numSymbols;
{
ulSchedPucch->intraFreqHop = pucchDedCfg->resrc->resrcToAddModList[resrcIdx].intraFreqHop;
ulSchedPucch->secondPrbHop = pucchDedCfg->resrc->resrcToAddModList[resrcIdx].secondPrbHop;
- ulSchedPucch->fdAlloc.resAlloc.type1.startPrb = pucchDedCfg->resrc->resrcToAddModList[resrcIdx].startPrb;
+ ulSchedPucch->fdAlloc.startPrb = pucchDedCfg->resrc->resrcToAddModList[resrcIdx].startPrb;
ulSchedPucch->pucchFormat = pucchDedCfg->resrc->resrcToAddModList[resrcIdx].pucchFormat;
ret = fillUlSchedPucchFormat(ulSchedPucch->pucchFormat, ulSchedPucch,\
&pucchDedCfg->resrc->resrcToAddModList[resrcIdx], NULLP);
&startPrb, PUCCH_NUM_PRB_FORMAT_0_1_4);
if (ret == ROK)
{
- schPucchInfo->fdAlloc.resAlloc.type1.startPrb = ulBwp->freqAlloc.startPrb + pucchResourceSet[pucchIdx][3];
- schPucchInfo->fdAlloc.resAlloc.type1.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
+ schPucchInfo->fdAlloc.startPrb = ulBwp->freqAlloc.startPrb + pucchResourceSet[pucchIdx][3];
+ schPucchInfo->fdAlloc.numPrb = PUCCH_NUM_PRB_FORMAT_0_1_4;
schPucchInfo->tdAlloc.startSymb = pucchResourceSet[pucchIdx][1];
schPucchInfo->tdAlloc.numSymb = pucchResourceSet[pucchIdx][2];
schPucchInfo->pucchFormat = pucchResourceSet[pucchIdx][0];
UlSchedInfo ulSchedInfo;
SchUlSlotInfo *schUlSlotInfo = NULLP;
SlotTimingInfo ulTimingInfo;
+ CmLList *node = NULLP;
+ TotalPrbUsage *ulTotalPrbUsage = NULLP;
+
memset(&ulSchedInfo, 0, sizeof(UlSchedInfo));
/* add PHY delta */
memset(&schUlSlotInfo->schPucchInfo, 0, sizeof(SchPucchInfo));
}
- //send msg to MAC
+ /* Send msg to MAC */
ret = sendUlSchInfoToMac(&ulSchedInfo, schInst);
if(ret != ROK)
{
DU_LOG("\nERROR --> SCH : Sending UL Sch info from SCH to MAC failed");
}
+ /* Update DL PRB Usage for all stats group which requested for DL Total PRB Usage */
+ node = cmLListFirst(&schCb[schInst].statistics.activeKpiList.ulTotPrbUseList);
+ while(node)
+ {
+ ulTotalPrbUsage = (TotalPrbUsage *)node->node;
+ ulTotalPrbUsage->numPrbUsedForTx += schUlSlotInfo->prbAlloc.numPrbAlloc;
+ ulTotalPrbUsage->totalPrbAvailForTx += MAX_NUM_RB;
+ node = node->next;
+ }
+
+ /* Re-initialize UL Slot */
schInitUlSlot(schUlSlotInfo);
return ret;
}
pdcch->coresetCfg.shiftIndex = cell->cellCfg.phyCellId;
pdcch->coresetCfg.precoderGranularity = 0; /* sameAsRegBundle */
pdcch->numDlDci = 1;
- pdcch->dci.rnti = cell->raCb[ueId-1].tcrnti;
- pdcch->dci.scramblingId = cell->cellCfg.phyCellId;
- pdcch->dci.scramblingRnti = 0;
- pdcch->dci.cceIndex = 4; /* considering SIB1 is sent at cce 0-1-2-3 */
- pdcch->dci.aggregLevel = 4;
- pdcch->dci.beamPdcchInfo.numPrgs = 1;
- pdcch->dci.beamPdcchInfo.prgSize = 1;
- pdcch->dci.beamPdcchInfo.digBfInterfaces = 0;
- pdcch->dci.beamPdcchInfo.prg[0].pmIdx = 0;
- pdcch->dci.beamPdcchInfo.prg[0].beamIdx[0] = 0;
- pdcch->dci.txPdcchPower.beta_pdcch_1_0 = 0;
- pdcch->dci.txPdcchPower.powerControlOffsetSS = 0;
- pdsch = &pdcch->dci.pdschCfg;
+ pdcch->dci[0].rnti = cell->raCb[ueId-1].tcrnti;
+ pdcch->dci[0].scramblingId = cell->cellCfg.phyCellId;
+ pdcch->dci[0].scramblingRnti = 0;
+ pdcch->dci[0].cceIndex = 4; /* considering SIB1 is sent at cce 0-1-2-3 */
+ pdcch->dci[0].aggregLevel = 4;
+ pdcch->dci[0].beamPdcchInfo.numPrgs = 1;
+ pdcch->dci[0].beamPdcchInfo.prgSize = 1;
+ pdcch->dci[0].beamPdcchInfo.digBfInterfaces = 0;
+ pdcch->dci[0].beamPdcchInfo.prg[0].pmIdx = 0;
+ pdcch->dci[0].beamPdcchInfo.prg[0].beamIdx[0] = 0;
+ pdcch->dci[0].txPdcchPower.beta_pdcch_1_0 = 0;
+ pdcch->dci[0].txPdcchPower.powerControlOffsetSS = 0;
+ pdsch = &pdcch->dci[0].pdschCfg;
/* fill the PDSCH PDU */
uint8_t cwCount = 0;
* ****************************************************************/
uint8_t schDlRsrcAllocDlMsg(SchCellCb *cell, SlotTimingInfo slotTime, uint16_t crnti,
uint32_t tbSize, DlMsgSchInfo *dlMsgAlloc, uint16_t startPRB, uint8_t pdschStartSymbol,
- uint8_t pdschNumSymbols, bool isRetx, SchDlHqProcCb *hqP)
+ uint8_t pdschNumSymbols, bool isRetx, SchDlHqProcCb *hqP, SchPdcchAllocInfo pdcchAllocInfo)
{
- uint8_t ueId=0;
- uint8_t cwCount = 0;
+ uint8_t ueId=0, ssIdx = 0, cRSetIdx = 0;;
+ uint8_t cwCount = 0, rbgCount = 0, pdcchStartSymbol = 0;
PdcchCfg *pdcch = NULLP;
PdschCfg *pdsch = NULLP;
BwpCfg *bwp = NULLP;
SchUeCb ueCb;
SchControlRsrcSet coreset1;
+ SchSearchSpace searchSpace;
SchPdschConfig pdschCfg;
uint8_t dmrsStartSymbol, startSymbol, numSymbol;
GET_UE_ID(crnti, ueId);
ueCb = cell->ueCb[ueId-1];
- coreset1 = ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.cRSetToAddModList[0];
+
+ for(cRSetIdx = 0; cRSetIdx < ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.numCRsetToAddMod; cRSetIdx++)
+ {
+ if(ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.cRSetToAddModList[cRSetIdx].cRSetId\
+ == pdcchAllocInfo.cRSetId)
+ {
+ coreset1 = ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.cRSetToAddModList[cRSetIdx];
+ break;
+ }
+ }
+ for(ssIdx = 0; ssIdx < ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.numSearchSpcToAddMod; ssIdx++)
+ {
+ if(ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.searchSpcToAddModList[ssIdx].searchSpaceId\
+ == pdcchAllocInfo.ssId)
+ {
+ searchSpace = ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg.searchSpcToAddModList[ssIdx];
+ break;
+ }
+ }
pdschCfg = ueCb.ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdschCfg;
/* fill BWP */
bwp->cyclicPrefix = cell->sib1SchCfg.bwp.cyclicPrefix;
/* fill the PDCCH PDU */
- //Considering coreset1 also starts from same symbol as coreset0
- pdcch->coresetCfg.startSymbolIndex = coresetIdxTable[0][3];
+ /*StartSymbol of PDCCH*/
+ pdcchStartSymbol = findSsStartSymbol(searchSpace.mSymbolsWithinSlot);
+ if(pdcchStartSymbol < MAX_SYMB_PER_SLOT)
+ pdcch->coresetCfg.startSymbolIndex = pdcchStartSymbol;
+ else
+ {
+ DU_LOG("\nERROR --> SCH : Invalid SymbolIndex in schDlRsrcAllocDlMsg");
+ return RFAILED;
+ }
pdcch->coresetCfg.durationSymbols = coreset1.duration;
memcpy(pdcch->coresetCfg.freqDomainResource, coreset1.freqDomainRsrc, FREQ_DOM_RSRC_SIZE);
pdcch->coresetCfg.cceRegMappingType = coreset1.cceRegMappingType; /* non-interleaved */
pdcch->coresetCfg.regBundleSize = 6; /* must be 6 for non-interleaved */
pdcch->coresetCfg.interleaverSize = 0; /* NA for non-interleaved */
pdcch->coresetCfg.coreSetType = 1; /* non PBCH coreset */
- //Considering number of RBs in coreset1 is same as coreset0
- pdcch->coresetCfg.coreSetSize = coresetIdxTable[0][1];
+
+ /*Size of coreset: Number of PRBs in a coreset*/
+ rbgCount = countRBGFrmCoresetFreqRsrc(coreset1.freqDomainRsrc);
+ if(rbgCount)
+ {
+ pdcch->coresetCfg.coreSetSize = ((rbgCount) * NUM_PRBS_PER_RBG);
+ }
+ else
+ {
+ DU_LOG("\nERROR --> SCH : CORESETSize is zero in schDlRsrcAllocDlMsg");
+ return RFAILED;
+ }
+
pdcch->coresetCfg.shiftIndex = cell->cellCfg.phyCellId;
pdcch->coresetCfg.precoderGranularity = coreset1.precoderGranularity;
- pdcch->numDlDci = 1;
- pdcch->dci.rnti = ueCb.crnti;
- pdcch->dci.scramblingId = cell->cellCfg.phyCellId;
- pdcch->dci.scramblingRnti = 0;
- pdcch->dci.cceIndex = 0; /* 0-3 for UL and 4-7 for DL */
- pdcch->dci.aggregLevel = 4;
- pdcch->dci.beamPdcchInfo.numPrgs = 1;
- pdcch->dci.beamPdcchInfo.prgSize = 1;
- pdcch->dci.beamPdcchInfo.digBfInterfaces = 0;
- pdcch->dci.beamPdcchInfo.prg[0].pmIdx = 0;
- pdcch->dci.beamPdcchInfo.prg[0].beamIdx[0] = 0;
- pdcch->dci.txPdcchPower.beta_pdcch_1_0 = 0;
- pdcch->dci.txPdcchPower.powerControlOffsetSS = 0;
-
- pdsch = &pdcch->dci.pdschCfg;
+ if(pdcch->numDlDci >= MAX_NUM_PDCCH)
+ {
+ DU_LOG("\nERROR --> SCH: MAX number of PDCCH allocted for this slot.");
+ return RFAILED;
+ }
+ pdcch->dci[pdcch->numDlDci].rnti = ueCb.crnti;
+ pdcch->dci[pdcch->numDlDci].scramblingId = cell->cellCfg.phyCellId;
+ pdcch->dci[pdcch->numDlDci].scramblingRnti = 0;
+
+ /*TODO below assumptions of CCE Index is wrong:
+ * Range 0 to 135 as per ORAN.WG8.AAD Table 9-35 CORESET configuration and
+ * it has to be calculated using the formula given in 3GPP TS 38.213, Sec 10.1 */
+ pdcch->dci[pdcch->numDlDci].cceIndex = pdcchAllocInfo.cceIndex;
+ pdcch->dci[pdcch->numDlDci].aggregLevel = pdcchAllocInfo.aggLvl;
+ pdcch->dci[pdcch->numDlDci].beamPdcchInfo.numPrgs = 1;
+ pdcch->dci[pdcch->numDlDci].beamPdcchInfo.prgSize = 1;
+ pdcch->dci[pdcch->numDlDci].beamPdcchInfo.digBfInterfaces = 0;
+ pdcch->dci[pdcch->numDlDci].beamPdcchInfo.prg[0].pmIdx = 0;
+ pdcch->dci[pdcch->numDlDci].beamPdcchInfo.prg[0].beamIdx[0] = 0;
+ pdcch->dci[pdcch->numDlDci].txPdcchPower.beta_pdcch_1_0 = 0;
+ pdcch->dci[pdcch->numDlDci].txPdcchPower.powerControlOffsetSS = 0;
+
+ pdsch = &pdcch->dci[pdcch->numDlDci].pdschCfg;
+ pdcch->numDlDci++;
+
pdsch->pduBitmap = 0; /* PTRS and CBG params are excluded */
pdsch->rnti = ueCb.crnti;
pdsch->pduIndex = 0;
/* Allocate the number of PRBs required for DL PDSCH */
if((allocatePrbDl(cell, slotTime, startSymbol, numSymbol,\
- &pdsch->pdschFreqAlloc.startPrb, pdsch->pdschFreqAlloc.numPrb)) != ROK)
+ &pdsch->pdschFreqAlloc.startPrb, pdsch->pdschFreqAlloc.numPrb)) != ROK)
{
DU_LOG("\nERROR --> SCH : allocatePrbDl() failed for DL MSG");
SCH_FREE(dlMsgAlloc->dlMsgPdcchCfg, sizeof(PdcchCfg));
/* Initialization the K0K1 structure, total num of slot and calculating the slot pattern length. */
memset(k0K1InfoTbl, 0, sizeof(SchK0K1TimingInfoTbl));
k0K1InfoTbl->tblSize = cell->numSlots;
- totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.scsCommon, cell->cellCfg.tddCfg.tddPeriod);
+ totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.ssbScs, cell->cellCfg.tddCfg.tddPeriod);
/* Storing time domain resource allocation list based on common or
* dedicated configuration availability. */
k2InfoTbl->tblSize = cell->numSlots;
if(msg3K2InfoTbl)
msg3K2InfoTbl->tblSize = cell->numSlots;
- totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.scsCommon, cell->cellCfg.tddCfg.tddPeriod);
+ totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.ssbScs, cell->cellCfg.tddCfg.tddPeriod);
/* Checking all possible indexes for K2. */
for(slotIdx = 0; slotIdx < cell->numSlots; slotIdx++)
k2Val = timeDomRsrcAllocList[k2Index].k2;
if(!k2Val)
{
- switch(cell->cellCfg.scsCommon)
+ switch(cell->cellCfg.ssbScs)
{
case SCS_15KHZ:
k2Val = DEFAULT_K2_VALUE_FOR_SCS15;
if(msg3K2InfoTbl)
{
- msg3Delta = puschDeltaTable[cell->cellCfg.numerology];
+ msg3Delta = puschDeltaTable[cell->numerology];
/* Check for K2 for MSG3 */
/* Current slot + k2 should be either UL or FLEXI slot.
{
if(*sharedPRB <= (estPrb - remReservedPRB))
{
- DU_LOG("\nDEBUG --> SCH: SharedPRB is less");
+ DU_LOG("\nDEBUG --> SCH: SharedPRB is less");
*sharedPRB = 0;
}
else
* Functionality:
* fill DL message information for MSG4 and Dedicated DL Msg
*
-* @params[in] DlMsgInfo *dlMsgInfo, uint8_t crnti
+* @params[in] DlMsgInfo *dlMsgInfo, uint16_t crnti
* @params[in] bool isRetx, SchDlHqProcCb *hqP
* @return void
*
*******************************************************************/
-void fillDlMsgInfo(DlMsgSchInfo *dlMsgSchInfo, uint8_t crnti, bool isRetx, SchDlHqProcCb *hqP)
+void fillDlMsgInfo(DlMsgSchInfo *dlMsgSchInfo, uint16_t crnti, bool isRetx, SchDlHqProcCb *hqP)
{
hqP->tbInfo[0].isEnabled = TRUE;
hqP->tbInfo[0].state = HQ_TB_WAITING;
}
if(findValidK0K1Value(cell, currTime, ueId, false, &pdschStartSymbol, &pdschNumSymbols, &pdcchTime, &pdschTime,\
- &pucchTime, isRetxMsg4, *msg4HqProc) != true )
+ &pucchTime, isRetxMsg4, *msg4HqProc, NULLP) != true )
{
DU_LOG("\nERROR --> SCH: schProcessMsg4Req() : k0 k1 not found");
return RFAILED;
cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP;
return RFAILED;
}
- memcpy(dciSlotAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci.pdschCfg, sizeof(PdschCfg));
+ memcpy(dciSlotAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci[0].pdschCfg, sizeof(PdschCfg));
}
else
{
SCH_ALLOC(msg4SlotAlloc->dlMsgPdschCfg, sizeof(PdschCfg));
if(msg4SlotAlloc->dlMsgPdschCfg)
{
- memcpy(msg4SlotAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci.pdschCfg, sizeof(PdschCfg));
+ memcpy(msg4SlotAlloc->dlMsgPdschCfg, &dciSlotAlloc->dlMsgPdcchCfg->dci[0].pdschCfg, sizeof(PdschCfg));
}
else
{
schAllocPucchResource(cell, pucchTime, cell->raCb[ueId-1].tcrnti, &cell->ueCb[ueId-1], isRetxMsg4, *msg4HqProc);
cell->schDlSlotInfo[pdcchTime.slot]->pdcchUe = ueId;
- cell->schDlSlotInfo[pdschTime.slot]->pdschUe = ueId;
cell->schUlSlotInfo[pucchTime.slot]->pucchUe = ueId;
cell->raCb[ueId-1].msg4recvd = FALSE;
if(isRetxMsg4)
if(schGetSlotSymbFrmt(dciTime.slot, cell->slotFrmtBitMap) == DL_SLOT)
#endif
{
- if(ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.k2TblPrsnt)
- k2InfoTbl = &ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.k2InfoTbl;
+ if(ueCb->k2TblPrsnt)
+ k2InfoTbl = &ueCb->k2InfoTbl;
else
k2InfoTbl = &cell->k2InfoTbl;
{
k2Index = k2InfoTbl->k2TimingInfo[dciTime.slot].k2Indexes[k2TblIdx];
- if(!ueCb->ueCfg.spCellCfg.servCellRecfg.initUlBwp.k2TblPrsnt)
+ if(!ueCb->k2TblPrsnt)
{
k2Val = cell->cellCfg.ulCfgCommon.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].k2;
startSymb = cell->cellCfg.ulCfgCommon.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].startSymbol;
SchK2TimingInfoTbl *msg3K2InfoTbl=NULLP;
SlotTimingInfo currTime, msg3TempTime;
currTime = cell->slotInfo;
- puschMu = cell->cellCfg.numerology;
+ puschMu = cell->numerology;
if (isRetx)
{
{
numK2 = cell->msg3K2InfoTbl.k2TimingInfo[dlTime].numK2;
msg3K2InfoTbl = &cell->k2InfoTbl;
- msg3MinSchTime = minMsg3SchTime[cell->cellCfg.numerology];
+ msg3MinSchTime = minMsg3SchTime[cell->numerology];
msg3Delta = puschDeltaTable[puschMu];
}
return k2Found;
}
+/*
+ * * @brief : This Function fills the Coreset and SS info based on PDCCH Cfg received for a UE
+ *
+ * Function : fillUeCoresetAndSsInfo
+ *
+ * For a Coreset, capture the following details which will be used during pdcch allocation
+ * [Step 1]: Count number of RBG and calculate TotalPRBs which can be used
+ * [Step 2]: Get the reference pointer for Coreset and Its SearchSpace.
+ * [Step 3]: A CCE will have 6 RBs in TOTAL. If duration increases, CCE will
+ * occupy less number of PRBs(1RB x 1 OFDM Symbol). Eg. If duration = 2, then
+ * instead of 6 PRBs, CCE will only occupy 3 PRBs and 2 OFDM symbols.
+ * [Step 4]: Based on CoresetSize, fill AggLvl-CQI mapping by calculating the dciSize.
+ * [Step 5]: Calculate Y value for this coreset and UE
+ *
+ * @Params[in]: UeCb,
+ * [return]: ROK, RFAILED : Memory allocation failure.
+ **/
+uint8_t fillUeCoresetAndSsInfo(SchUeCb *ue)
+{
+ uint8_t cRSetIdx = 0,ssIdx = 0;
+ uint16_t rbgCount = 0;
+ SchPdcchConfig *pdcchCfg = NULLP;
+
+ pdcchCfg = &ue->ueCfg.spCellCfg.servCellRecfg.initDlBwp.pdcchCfg;
+ if(pdcchCfg == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH: PDCCH Cfg is not received thus skip filling of Coreset & SS info");
+ return RFAILED;
+ }
+ for(cRSetIdx = 0; cRSetIdx < pdcchCfg->numCRsetToAddMod; cRSetIdx++ )
+ {
+ /*[Step 1]: *//*Size of coreset: Number of PRBs in a coreset*/
+ rbgCount = countRBGFrmCoresetFreqRsrc(pdcchCfg->cRSetToAddModList[cRSetIdx].freqDomainRsrc);
+ if(rbgCount)
+ {
+ ue->pdcchInfo[cRSetIdx].totalPrbs = ((rbgCount) * NUM_PRBS_PER_RBG);
+ }
+ else
+ {
+ DU_LOG("\nERROR --> SCH : CORESETSize is zero in fillCoresetAndSsConfg");
+ continue;
+ }
+ /*[Step 2]:*/
+ ue->pdcchInfo[cRSetIdx].cRSetRef = &pdcchCfg->cRSetToAddModList[cRSetIdx];
+ for(ssIdx = 0; ssIdx < pdcchCfg->numSearchSpcToAddMod; ssIdx++)
+ {
+ if(pdcchCfg->searchSpcToAddModList[ssIdx].cRSetId == pdcchCfg->cRSetToAddModList[cRSetIdx].cRSetId)
+ {
+ ue->pdcchInfo[cRSetIdx].ssRef = &pdcchCfg->searchSpcToAddModList[ssIdx];
+ break;
+ }
+ }
+
+ /*[Step 3]:*/
+ /*nrOfPRBPerCce is Number of PRBs occupied by a CCE based on Duration*/
+ ue->pdcchInfo[cRSetIdx].nrOfPRBPerCce = NUM_PRBS_PER_RBG/pdcchCfg->cRSetToAddModList[cRSetIdx].duration;
+ ue->pdcchInfo[cRSetIdx].totalCceCount = rbgCount * pdcchCfg->cRSetToAddModList[cRSetIdx].duration;
+
+ /*[Step 4]:*/
+ fillCqiAggLvlMapping(&ue->pdcchInfo[cRSetIdx]);
+
+ /*[Step 5]:*/
+ if(RFAILED == schUpdValY(ue, &ue->pdcchInfo[cRSetIdx]))
+ {
+ return RFAILED;
+ }
+ }
+ return ROK;
+}
+
+/*
+ * @brief: Function will validate a slot for PDCCH allocation
+ *
+ * Function: schPdcchSlotValidation
+ *
+ * As per 3gpp Spec 38.331, SearchSpace parameter, Every SearchSpace will have
+ * details of which slot and after how many slot the UE will monitor for PDCCH.
+ * Thus, while PDCCH allocation we need to ensure the above validation passes.
+ *
+ * @param [IN]: PDCCH time, SearchSpace Info, numSlots in Cell
+ * [RETURN]: Flag depicting the slot validation
+ * */
+bool schPdcchSlotValidation(SlotTimingInfo pdcchTime, SchSearchSpace *searchSpace, uint16_t numSlots)
+{
+ bool isSlotValid = false;
+ uint16_t slotNum = 0, mSlotPeriodicityVal = 0;
+
+ /*Converting the timing info in units of Slots*/
+ slotNum = (pdcchTime.sfn * numSlots)+pdcchTime.slot;
+
+ mSlotPeriodicityVal = \
+ schConvertSlotPeriodicityEnumToValue(searchSpace->mSlotPeriodicityAndOffset.mSlotPeriodicity);
+
+ if(!mSlotPeriodicityVal)
+ {
+ DU_LOG("\nERROR --> SCH: Slot Periodicity is ZERO thus cant proceed with this SearchSpace");
+ return false;
+ }
+ /*The Monitoring slot begins from offset thus skip the slots which are less
+ * than offset value*/
+ if((slotNum >= searchSpace->mSlotPeriodicityAndOffset.mSlotOffset))
+ {
+ /*A pdcch Slot will start after Slotoffset and will get repeated after every
+ * SlotPeriodicity*/
+ if(((slotNum - searchSpace->mSlotPeriodicityAndOffset.mSlotOffset) % mSlotPeriodicityVal) == 0)
+ {
+ DU_LOG("\nINFO --> SCH: SFN:%d/Slot:%d, is a Valid PDCCH slot",pdcchTime.sfn, pdcchTime.slot);
+ isSlotValid = true;
+ }
+ else
+ {
+ DU_LOG("\nINFO --> SCH: SFN:%d/Slot:%d, is InValid PDCCH slot",pdcchTime.sfn, pdcchTime.slot);
+ }
+ }
+ return (isSlotValid);
+}
+
+/*
+ * @brief: Function to check if PDCCH is available for a cceIndex
+ *
+ * Function: schCheckPdcchAvail
+ *
+ * This function checks if the PRBs available for a particular CCE during
+ * PDCCH allocation
+ * [Step 1]: Calculate the rbgIndex from cceIndex which depends on Coreset symbol duration
+ * i.e. a) If symbolDuration = 1; numPrbs in RBG (6) = numPrbPerCCE thus one on
+ * one mapping between rbgIndex and cceIndex
+ * b) if SymbolDuration =2; NumPrbs in RBG(6) = numPrbPerCCE * duration
+ * as CCE needs 6 REG thus in 3 PRBs whole CCE can contain
+ * c) and so on
+ *
+ * [Step 2]: Again StartPRB for a rbgIndex may not be same for CCE Index which
+ * depends on duration. If duration=2, then two CCE can be occupied
+ * in one RBGIndex thus StarPrb for secondCCE will be
+ * numPrbsPerCCE(3) away.
+ *
+ * @params[in]: CellCb, SlotTime, cceIndex, PDcchInfo, aggLvl
+ * */
+bool schCheckPdcchAvail(SchCellCb *cellCb, SlotTimingInfo slotTime, uint8_t cceIndex,\
+ SchPdcchInfo *pdcchInfo, uint8_t aggLvl )
+{
+ uint8_t rbgIndex = 0, ret = 0, startSymbol = 0;
+ uint16_t startPrb = MAX_NUM_RB, numPrb = 0;
+
+ /*[Step 1]: rbgIndex to locate in FreqDomainResource parmaeter in
+ * SearchSpace*/
+ rbgIndex = cceIndex / (pdcchInfo->cRSetRef->duration);
+
+ /*Extract StartPRB for that RBGIndex*/
+ startPrb = extractStartPrbForRBG(pdcchInfo->cRSetRef->freqDomainRsrc, rbgIndex);
+ if(startPrb == MAX_NUM_RB)
+ {
+ DU_LOG("\nERROR --> SCH: No RBG is allocated for PDCCH in this Coreset");
+ return false;
+ }
+ /*[Step 2]: Adjust StartPrb based on CCEIndex and duration*/
+ startPrb = startPrb + ((cceIndex % pdcchInfo->cRSetRef->duration) * (pdcchInfo->nrOfPRBPerCce));
+ startSymbol = findSsStartSymbol(pdcchInfo->ssRef->mSymbolsWithinSlot);
+
+ /*numPrb will also get adjusted with duration*/
+ numPrb = (NUM_PRBS_PER_RBG * aggLvl) / pdcchInfo->cRSetRef->duration;
+ DU_LOG("\nDEBUG --> SCH: RBG found for cceIndex:%d, AggLvl:%d and SymbolDuration%d with StartPrb:%d, numPrb:%d",\
+ cceIndex, aggLvl, pdcchInfo->cRSetRef->duration, startPrb, numPrb);
+
+ ret = allocatePrbDl(cellCb, slotTime, startSymbol,\
+ pdcchInfo->cRSetRef->duration, &startPrb, numPrb);
+
+ if(ret == RFAILED)
+ {
+ DU_LOG("\nERROR --> SCH: PRBs can't be allocated as they are unavailable");
+ return false;
+ }
+ return true;
+
+}
+
+/*
+ * @brief: Function to select particular UE based on validation of PDCCH allocation
+ *
+ * Function:
+ * This function will have multiple layers of validation for PDCCH allocation
+ * based on CORESET and SearchSpace configuration and availability.
+ *
+ * [Step 1]: Check if the slot is pdcch Slot or not based on SearchSpace's
+ * monitoringSlotInfo.
+ * [Step 2]: Check the CQI for this UE and decide upon which Agg Level has to
+ * be used for this PDCCH transmission
+ * [Step 3]: find the AggLevel for this CQI = base aggregation level
+ * [Step 4]: NextLowerAggLvl will be the next lower aggLevel when PDCCH
+ * allocation fails for base agg Level.
+ * [Step 5]: For each candidate , calculate the CCE Index as per TS
+ * 38.213v15, Sec 10.1 and also check PRBs falling in that CCEIndex is free.
+ * [Step 6]: If Step 5 fails, move to next candidate and if Candidate gets
+ * exhausted then fallback to nextAggLevel. Because as we decrease aggLevel,
+ * numberOfCCEReq decreases so chances of PDCCH allocation increases even
+ * though lowerAggLevel will not guarantee transmission of PDCCH as per CQI
+ * reported.(CQI less, AggiLvlRequried is More)
+ *
+ * @params[IN]: SchUeCb and PdcchTime
+ * [RETURN]: isPDCCHAllocted flag(true = UE can be selected as a
+ * candidate )
+ * */
+bool schDlCandidateSelection(SchUeCb *ueCb, SlotTimingInfo pdcchTime, SchPdcchAllocInfo *pdcchAllocInfo)
+{
+ uint8_t cRSetIdx = 0, cceIndex = 0;
+ uint8_t cqi = 0, candIdx = 0;
+ uint8_t baseAggLvl = 0, nextLowerAggLvl = 0, numCandidates = 0;
+ SchPdcchInfo *pdcchInfo = NULLP;
+ uint32_t a = 0, b = 0;
+
+ for(cRSetIdx = 0; cRSetIdx < MAX_NUM_CRSET; cRSetIdx++)
+ {
+ pdcchInfo = &ueCb->pdcchInfo[cRSetIdx];
+ if(pdcchInfo->cRSetRef == NULLP)
+ {
+ DU_LOG("\nINFO --> SCH: Coreset is not availabe at Index:%d",cRSetIdx);
+ continue;
+ }
+ /*[Step 1]:*/
+ if(false == schPdcchSlotValidation(pdcchTime, pdcchInfo->ssRef, ueCb->cellCb->numSlots))
+ {
+ DU_LOG("\nINFO --> SCH: This slot is not valid for PDCCH in this CORESET:%d.",pdcchInfo->cRSetRef->cRSetId);
+ break;
+ }
+ /*[Step 2]:*/
+ /*TODO: CQI is reported in DL_CQI_IND which has to be processed and
+ * report has to be stored in ueCb.For now, HardCoding the value*/
+ cqi = 5;
+
+ /*[Step 3]: */
+ baseAggLvl = pdcchInfo->cqiIndxAggLvlMap[cqi];
+
+ /*[Step 4]:*/
+ nextLowerAggLvl = baseAggLvl;
+
+ /*Loop to traverse through each AggLvl from higher value of aggLevel to
+ * 1 AggLvl*/
+ do
+ {
+ /*Configured num of candidates for each Agg Level in search space */
+ numCandidates = extractNumOfCandForAggLvl(pdcchInfo->ssRef, nextLowerAggLvl);
+ if(!numCandidates)
+ {
+ DU_LOG("\nINFO --> SCH: Num Of Candidates configured for this AggLvel:%d is ZERO",baseAggLvl);
+ }
+
+ /*[Step 5]:*/
+ for(candIdx= 0; candIdx < numCandidates; candIdx++)
+ {
+ /*Formula reference 3GPP TS 38.213v15, Sec 10.1, Variable 'a' and
+ * 'b' is used for segmenting the formulat for readability purpose
+ * */
+ a = pdcchInfo->y[pdcchTime.slot] + \
+ ceil((candIdx * pdcchInfo->totalCceCount)/(baseAggLvl * numCandidates));
+ b = ceil(pdcchInfo->totalCceCount * baseAggLvl);
+ cceIndex = baseAggLvl * (a % b);
+ if(schCheckPdcchAvail(ueCb->cellCb, pdcchTime, cceIndex, pdcchInfo,nextLowerAggLvl) == true)
+ {
+ DU_LOG("\nINFO --> SCH: PDCCH allocation is successful at cceIndex:%d",cceIndex);
+ pdcchAllocInfo->cRSetId = pdcchInfo->cRSetRef->cRSetId;
+ pdcchAllocInfo->aggLvl = nextLowerAggLvl;
+ pdcchAllocInfo->cceIndex = cceIndex;
+ pdcchAllocInfo->ssId = pdcchInfo->ssRef->searchSpaceId;
+ return true;
+ }
+ }
+ nextLowerAggLvl = nextLowerAggLvl >> 1;
+ }while(nextLowerAggLvl > 0 && nextLowerAggLvl <= 16);
+ }
+ return false;
+}
/**********************************************************************
End of file
**********************************************************************/
Code Review / o-du / l2.git / blobdiff