#include "sch.h"
#include "sch_utils.h"
-SchCb schCb[SCH_MAX_INST];
-uint8_t puschDeltaTable[MAX_MU_PUSCH];
+/**
+ * @brief Checks if PRACH can be scheduled in current slot
+ *
+ * @details
+ *
+ * Function : schCheckPrachOcc
+ *
+ * This function checks if PRACH can be scheduled in
+ * current slot
+ *
+ * @param[in] Cell Cb
+ * Slot timing
+ * @return TRUE
+ * FALSE
+ **/
+bool schCheckPrachOcc(SchCellCb *cell, SlotTimingInfo prachOccasionTimingInfo)
+{
+ uint8_t prachCfgIdx = 0;
+ uint8_t x = 0;
+ uint8_t y = 0;
+ uint8_t subFrame = 0;
+ uint16_t prachSubframe = 0;
+
+ prachCfgIdx = cell->cellCfg.schRachCfg.prachCfgIdx;
+
+ /* derive the prachCfgIdx table paramters */
+ x = prachCfgIdxTable[prachCfgIdx][1];
+ y = prachCfgIdxTable[prachCfgIdx][2];
+ prachSubframe = prachCfgIdxTable[prachCfgIdx][3];
+
+ if((prachOccasionTimingInfo.sfn%x) == y)
+ {
+ subFrame = prachOccasionTimingInfo.slot/pow(2, cell->cellCfg.numerology);
+
+ /* check for subFrame number */
+ if ((1 << subFrame) & prachSubframe)
+ {
+ /* prach ocassion present in this subframe */
+#ifdef NR_TDD
+ if(UL_SLOT != schGetSlotSymbFrmt(prachOccasionTimingInfo.slot % cell->numSlotsInPeriodicity,\
+ cell->slotFrmtBitMap))
+ {
+ DU_LOG("\nERROR --> SCH : PrachCfgIdx %d doesn't support UL slot", prachCfgIdx);
+ return FALSE;
+ }
+#endif
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+/**
+ * @brief Calculate number of PRBs to be allocated for PRACH
+ *
+ * @details
+ *
+ * Function : schCalcPrachNumRb
+ *
+ * Calculate number of PRBs to be allocated for PRACH
+ *
+ * @param[in] SchCellCb *cell, cell cb
+ * @return Number of PRBs
+ **/
+uint8_t schCalcPrachNumRb(SchCellCb *cell)
+{
+ uint8_t tableIdx = 0;
+ uint16_t puschScs = convertScsEnumValToScsVal(cell->cellCfg.schInitialUlBwp.bwp.scs);
+
+ for(tableIdx=0; tableIdx < MAX_RACH_NUM_RB_IDX; tableIdx++)
+ {
+ if((numRbForPrachTable[tableIdx][0] == cell->cellCfg.schRachCfg.rootSeqLen) &&
+ (numRbForPrachTable[tableIdx][1] == cell->cellCfg.schRachCfg.prachSubcSpacing) &&
+ (numRbForPrachTable[tableIdx][2] == puschScs))
+ {
+ return numRbForPrachTable[tableIdx][3];
+ }
+ }
+ return 0;
+}
+
+/**
+ * @brief resource allocation for PRACH
+ *
+ * @details
+ *
+ * Function : schPrachResAlloc
+ *
+ * This function handles PRACH allocation
+ *
+ * @param[in] SchCellCb *cell, cell cb
+ * @param[in] UlSchedInfo *ulSchedInfo, UL scheduling info
+ * @return void
+ **/
+void schPrachResAlloc(SchCellCb *cell, UlSchedInfo *ulSchedInfo, SlotTimingInfo prachOccasionTimingInfo)
+{
+ uint8_t numPrachRb = 0;
+ uint8_t numRa = 0;
+ uint8_t prachCfgIdx = 0;
+ uint8_t prachFormat = 0;
+ uint8_t prachStartSymbol = 0;
+ uint8_t prachDuration = 0;
+ uint8_t prachOcas = 0;
+ uint8_t dataType = 0;
+ uint16_t freqStart = 0;
+
+ if(cell == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH : schPrachResAlloc(): Received cellCb is null");
+ return;
+ }
+
+ /* If this slot is not a PRACH occassion, return */
+ if(!schCheckPrachOcc(cell, prachOccasionTimingInfo))
+ return;
+
+ prachCfgIdx = cell->cellCfg.schRachCfg.prachCfgIdx;
+ prachFormat = prachCfgIdxTable[prachCfgIdx][0];
+ prachStartSymbol = prachCfgIdxTable[prachCfgIdx][4];
+ prachOcas = prachCfgIdxTable[prachCfgIdx][6];
+ prachDuration = prachCfgIdxTable[prachCfgIdx][7];
+
+ /* numRa determined as 𝑛 belonging {0,1,.., M − 1},
+ * where M is given by msg1Fdm */
+ numRa = (cell->cellCfg.schRachCfg.msg1Fdm - 1);
+
+ /* freq domain resource determination for RACH*/
+ freqStart = cell->cellCfg.schRachCfg.msg1FreqStart;
+ numPrachRb = schCalcPrachNumRb(cell);
+ /* Allocate PRACH resources from the UL resource bitmap */
+ allocatePrbUl(cell, prachOccasionTimingInfo, prachStartSymbol, prachDuration, &freqStart, numPrachRb);
+
+ /* prach info */
+ dataType |= SCH_DATATYPE_PRACH;
+ ulSchedInfo->dataType = dataType;
+ ulSchedInfo->prachSchInfo.numPrachOcas = prachOcas;
+ ulSchedInfo->prachSchInfo.prachFormat = prachFormat;
+ ulSchedInfo->prachSchInfo.numRa = numRa;
+ ulSchedInfo->prachSchInfo.prachStartSymb = prachStartSymbol;
+ DU_LOG("\nINFO --> SCH : RACH occassion set for slot %d", prachOccasionTimingInfo.slot);
+}
/**
* @brief calculate ra-rnti function.
GET_UE_IDX(tcrnti, ueIdx);
schCb[schInst].cells[schInst]->raCb[ueIdx -1].tcrnti = tcrnti;
+ schCb[schInst].cells[schInst]->raCb[ueIdx -1].msg4recvd = FALSE;
}
/**
* @param[out] msg3NumRb
* @return void
**/
-SchPuschInfo* schAllocMsg3Pusch(Inst schInst, uint16_t crnti, uint8_t k2Index, uint16_t msg3Slot)
+SchPuschInfo* schAllocMsg3Pusch(Inst schInst, uint16_t crnti, uint8_t k2Index, SlotTimingInfo msg3SlotTime)
{
SchCellCb *cell = NULLP;
SchUlSlotInfo *schUlSlotInfo = NULLP;
- uint8_t startSymb = 0;
- uint8_t symbLen = 0;
- uint8_t startRb = 0;
- uint8_t numRb = 0;
- uint8_t idx = 0;
- uint8_t mcs = 4;
- uint16_t tbSize = 0;
+ uint8_t mcs = DEFAULT_MCS;
+ uint8_t startSymb = 0;
+ uint8_t symbLen = 0;
+ uint16_t startRb = 0;
+ uint16_t numRb = 0;
+ uint16_t tbSize = 0;
cell = schCb[schInst].cells[schInst];
if(cell == NULL)
return NULLP;
}
+ /* Allocate time-domain and frequency-domain resource for MSG3 PUSCH */
startSymb = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].startSymbol;
symbLen = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].symbolLength;
- startRb = cell->schUlSlotInfo[msg3Slot]->puschCurrentPrb;
- tbSize = schCalcTbSize(8); /* 6 bytes msg3 and 2 bytes header */
- numRb = schCalcNumPrb(tbSize, mcs, NUM_PDSCH_SYMBOL);
-
- /* allocating 1 extra RB for now */
- numRb++;
- /* increment PUSCH PRB */
- cell->schUlSlotInfo[msg3Slot]->puschCurrentPrb += numRb;
-
- for(idx=startSymb; idx<symbLen; idx++)
- {
- //cell->schUlSlotInfo[msg3Slot]->assignedPrb[idx] = startRb + numRb;
- }
- schUlSlotInfo = cell->schUlSlotInfo[msg3Slot];
+ startRb = MAX_NUM_RB;
+ tbSize = schCalcTbSize(8); /* 6 bytes msg3 and 2 bytes header */
+ numRb = schCalcNumPrb(tbSize, mcs, symbLen);
+ numRb++; /* allocating 1 extra RB for now */
+ allocatePrbUl(cell, msg3SlotTime, startSymb, symbLen, &startRb, numRb);
+ /* Fill PUSCH scheduling details in Slot structure */
+ schUlSlotInfo = cell->schUlSlotInfo[msg3SlotTime.slot];
SCH_ALLOC(schUlSlotInfo->schPuschInfo, sizeof(SchPuschInfo));
if(!schUlSlotInfo->schPuschInfo)
{
DU_LOG("\nERROR --> SCH : Memory allocation failed in schAllocMsg3Pusch");
return NULLP;
}
+
tbSize = 0; /* since nPrb has been incremented, recalculating tbSize */
tbSize = schCalcTbSizeFromNPrb(numRb, mcs, NUM_PDSCH_SYMBOL);
tbSize = tbSize / 8 ; /*bits to byte conversion*/
+
schUlSlotInfo->schPuschInfo->crnti = crnti;
schUlSlotInfo->schPuschInfo->harqProcId = SCH_HARQ_PROC_ID;
schUlSlotInfo->schPuschInfo->resAllocType = SCH_ALLOC_TYPE_1;
schUlSlotInfo->schPuschInfo->tbInfo.mcsTable = SCH_MCS_TABLE_QAM_64;
schUlSlotInfo->schPuschInfo->tbInfo.ndi = NEW_TRANSMISSION; /* new transmission */
schUlSlotInfo->schPuschInfo->tbInfo.rv = 0;
- schUlSlotInfo->schPuschInfo->tbInfo.tbSize = tbSize; /*Considering 2 PRBs */
+ schUlSlotInfo->schPuschInfo->tbInfo.tbSize = tbSize;
schUlSlotInfo->schPuschInfo->dmrsMappingType = DMRS_MAP_TYPE_A; /* Setting Type-A */
schUlSlotInfo->schPuschInfo->nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
schUlSlotInfo->schPuschInfo->dmrsAddPos = DMRS_ADDITIONAL_POS;
* @param[in] Current timing of the cell
* @return ROK
**/
-void schProcessRaReq(SlotTimingInfo currTime, SchCellCb *cell)
+bool schProcessRaReq(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId)
{
bool k2Found = false;
- uint8_t ueIdx = 0, k0TblIdx = 0, k2TblIdx = 0;
+ uint8_t k0TblIdx = 0, k2TblIdx = 0;
uint8_t k0Index = 0, k2Index = 0;
uint8_t k0 = 0, k2 = 0;
uint8_t puschMu = 0;
#ifdef NR_TDD
uint8_t totalCfgSlot = 0;
#endif
- uint16_t dciSlot = 0, rarSlot = 0, msg3Slot = 0;
- SlotTimingInfo dciTime, rarTime;
+ uint16_t dciSlot = 0, rarSlot = 0;
+ SlotTimingInfo dciTime, rarTime, msg3Time;
RarAlloc *dciSlotAlloc = NULLP; /* Stores info for transmission of PDCCH for RAR */
RarAlloc *rarSlotAlloc = NULLP; /* Stores info for transmission of RAR PDSCH */
SchPuschInfo *msg3PuschInfo = NULLP; /* Stores MSG3 PUSCH scheduling information */
SchK2TimingInfoTbl *msg3K2InfoTbl=NULLP;
RaRspWindowStatus windowStatus=0;
- while(ueIdx < MAX_NUM_UE)
- {
- if(cell->raReq[ueIdx] == NULLP)
- {
- ueIdx++;
- continue;
- }
-
#ifdef NR_TDD
- totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.ssbSchCfg.scsCommon, cell->cellCfg.tddCfg.tddPeriod);
+ totalCfgSlot = calculateSlotPatternLength(cell->cellCfg.ssbSchCfg.scsCommon, cell->cellCfg.tddCfg.tddPeriod);
#endif
- k0K1InfoTbl = &cell->cellCfg.schInitialDlBwp.k0K1InfoTbl;
- msg3K2InfoTbl = &cell->cellCfg.schInitialUlBwp.msg3K2InfoTbl;
- puschMu = cell->cellCfg.numerology;
- msg3Delta = puschDeltaTable[puschMu];
- msg3MinSchTime = minMsg3SchTime[cell->cellCfg.numerology];
-
- /* Calculating time frame to send DCI for RAR */
- ADD_DELTA_TO_TIME(currTime, dciTime, PHY_DELTA_DL + SCHED_DELTA);
- dciSlot = dciTime.slot;
+ k0K1InfoTbl = &cell->cellCfg.schInitialDlBwp.k0K1InfoTbl;
+ msg3K2InfoTbl = &cell->cellCfg.schInitialUlBwp.msg3K2InfoTbl;
+ puschMu = cell->cellCfg.numerology;
+ msg3Delta = puschDeltaTable[puschMu];
+ msg3MinSchTime = minMsg3SchTime[cell->cellCfg.numerology];
+
+ /* Calculating time frame to send DCI for RAR */
+ ADD_DELTA_TO_TIME(currTime, dciTime, PHY_DELTA_DL + SCHED_DELTA);
+ dciSlot = dciTime.slot;
#ifdef NR_TDD
- /* Consider this slot for sending DCI, only if it is a DL slot */
- if(schGetSlotSymbFrmt(dciSlot, cell->slotFrmtBitMap) == DL_SLOT)
+ /* Consider this slot for sending DCI, only if it is a DL slot */
+ if(schGetSlotSymbFrmt(dciSlot, cell->slotFrmtBitMap) == DL_SLOT)
#endif
+ {
+ /* If PDCCH is already scheduled on this slot, cannot schedule PDSCH for another UE here. */
+ if(cell->schDlSlotInfo[dciSlot]->pdcchUe != 0)
+ return false;
+
+ /* Check if this slot is within RA response window */
+ windowStatus = isInRaRspWindow(cell->raReq[ueId-1], dciTime, cell->numSlots);
+ if(windowStatus == WITHIN_WINDOW)
{
-
- /* Check if this slot is within RA response window */
- windowStatus = isInRaRspWindow(cell->raReq[ueIdx], dciTime, cell->numSlots);
- if(windowStatus == WITHIN_WINDOW)
+ /* For all k0 values, search for a suitable k2 value to schedule MSG3.
+ * RAR DCI, RAR PDSCH and MSG3 is scheduled only if one such k0-k2 combination
+ * is found. Else no scheduling happens.
+ */
+ for(k0TblIdx = 0; k0TblIdx < k0K1InfoTbl->k0k1TimingInfo[dciSlot].numK0; k0TblIdx++)
{
- /* For all k0 values, search for a suitable k2 value to schedule MSG3.
- * RAR DCI, RAR PDSCH and MSG3 is scheduled only if one such k0-k2 combination
- * is found. Else no scheduling happens.
- */
- for(k0TblIdx = 0; k0TblIdx < k0K1InfoTbl->k0k1TimingInfo[dciSlot].numK0; k0TblIdx++)
+ k0Index = k0K1InfoTbl->k0k1TimingInfo[dciSlot].k0Indexes[k0TblIdx].k0Index;
+ k0 = cell->cellCfg.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].k0;
+
+ /* Calculating time frame to send RAR PDSCH */
+ ADD_DELTA_TO_TIME(dciTime, rarTime, k0);
+ rarSlot = rarTime.slot;
+
+ /* If PDSCH is already scheduled on this slot, cannot schedule PDSCH for another UE here. */
+ if(cell->schDlSlotInfo[rarSlot]->pdschUe != 0)
+ continue;
+
+ for(k2TblIdx = 0; k2TblIdx < msg3K2InfoTbl->k2TimingInfo[rarSlot].numK2; k2TblIdx++)
{
- k0Index = k0K1InfoTbl->k0k1TimingInfo[dciSlot].k0Indexes[k0TblIdx].k0Index;
- k0 = cell->cellCfg.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].k0;
+ k2Index = msg3K2InfoTbl->k2TimingInfo[rarSlot].k2Indexes[k2TblIdx];
+ k2 = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].k2;
- /* Calculating time frame to send RAR PDSCH */
- ADD_DELTA_TO_TIME(dciTime, rarTime, k0);
- rarSlot = rarTime.slot;
-
- for(k2TblIdx = 0; k2TblIdx < msg3K2InfoTbl->k2TimingInfo[rarSlot].numK2; k2TblIdx++)
+ /* Delta is added to the slot allocation for msg3 based on 38.214 section 6.1.2.1 */
+ k2 = k2 + msg3Delta;
+ if(k2 >= msg3MinSchTime)
{
- k2Index = msg3K2InfoTbl->k2TimingInfo[rarSlot].k2Indexes[k2TblIdx];
- k2 = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].k2;
-
- /* Delta is added to the slot allocation for msg3 based on 38.214 section 6.1.2.1 */
- k2 = k2 + msg3Delta;
- if(k2 >= msg3MinSchTime)
- {
- msg3Slot = (rarSlot + k2) % cell->numSlots;
+ ADD_DELTA_TO_TIME(rarTime, msg3Time, k2);
#ifdef NR_TDD
- if(schGetSlotSymbFrmt(msg3Slot % totalCfgSlot, cell->slotFrmtBitMap) == DL_SLOT)
- continue;
+ if(schGetSlotSymbFrmt(msg3Time.slot % totalCfgSlot, cell->slotFrmtBitMap) == DL_SLOT)
+ continue;
#endif
- k2Found = true;
- break;
- }
- }
- if(k2Found)
+ /* If PUSCH is already scheduled on this slot, another PUSCH
+ * pdu cannot be scheduled here */
+ if(cell->schUlSlotInfo[msg3Time.slot]->puschUe != 0)
+ continue;
+
+ k2Found = true;
break;
+ }
}
+ if(k2Found)
+ break;
}
- else if(windowStatus == WINDOW_EXPIRED)
- {
- SCH_FREE(cell->raReq[ueIdx]->rachInd, sizeof(RachIndInfo));
- SCH_FREE(cell->raReq[ueIdx], sizeof(SchRaReq));
- ueIdx++;
- continue;
- }
+ }
+ else if(windowStatus == WINDOW_EXPIRED)
+ {
+ SCH_FREE(cell->raReq[ueId-1]->rachInd, sizeof(RachIndInfo));
+ SCH_FREE(cell->raReq[ueId-1], sizeof(SchRaReq));
+ return false;
+ }
- /* If K0-K2 combination not found, no scheduling happens */
- if(!k2Found)
- {
- ueIdx++;
- continue;
- }
+ /* If K0-K2 combination not found, no scheduling happens */
+ if(!k2Found)
+ return false;
- /* Allocate memory for RAR PDCCH slot, pointer will be checked at schProcessSlotInd() */
- SCH_ALLOC(dciSlotAlloc, sizeof(RarAlloc));
- if(dciSlotAlloc == NULLP)
- {
- DU_LOG("\nERROR --> SCH : Memory Allocation failed for dciSlotAlloc");
- return;
- }
- cell->schDlSlotInfo[dciSlot]->rarAlloc = dciSlotAlloc;
+ /* Allocate memory for RAR PDCCH slot, pointer will be checked at schProcessSlotInd() */
+ SCH_ALLOC(dciSlotAlloc, sizeof(RarAlloc));
+ if(dciSlotAlloc == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH : Memory Allocation failed for dciSlotAlloc");
+ return false;
+ }
+ cell->schDlSlotInfo[dciSlot]->rarAlloc[ueId-1] = dciSlotAlloc;
- /* Fill PDCCH and PDSCH scheduling information for RAR */
- if((schFillRar(cell, rarTime, ueIdx, dciSlotAlloc, k0Index)) != ROK)
- {
- DU_LOG("\nERROR --> SCH: Scheduling of RAR failed in slot [%d]", rarSlot);
- SCH_FREE(dciSlotAlloc, sizeof(RarAlloc));
- cell->schDlSlotInfo[dciSlot]->rarAlloc = NULLP;
- return;
- }
+ /* Fill PDCCH and PDSCH scheduling information for RAR */
+ if((schFillRar(cell, rarTime, ueId, dciSlotAlloc, k0Index)) != ROK)
+ {
+ DU_LOG("\nERROR --> SCH: Scheduling of RAR failed in slot [%d]", rarSlot);
+ SCH_FREE(dciSlotAlloc, sizeof(RarAlloc));
+ cell->schDlSlotInfo[dciSlot]->rarAlloc[ueId-1] = NULLP;
+ return false;
+ }
+
+ /* Allocate resources for msg3 */
+ msg3PuschInfo = schAllocMsg3Pusch(cell->instIdx, cell->raReq[ueId-1]->rachInd->crnti, k2Index, msg3Time);
+ if(msg3PuschInfo)
+ {
+ /* Fill RAR info */
+ dciSlotAlloc->rarInfo.raRnti = cell->raReq[ueId-1]->raRnti;
+ dciSlotAlloc->rarInfo.tcrnti = cell->raReq[ueId-1]->rachInd->crnti;
+ dciSlotAlloc->rarInfo.RAPID = cell->raReq[ueId-1]->rachInd->preambleIdx;
+ dciSlotAlloc->rarInfo.ta = cell->raReq[ueId-1]->rachInd->timingAdv;
+ dciSlotAlloc->rarInfo.ulGrant.bwpSize = cell->cellCfg.schInitialUlBwp.bwp.freqAlloc.numPrb;
+ /* Spec 38.213, section 8.2, 0 : MSG3 PUSCH will be transmitted without frequency hopping */
+ dciSlotAlloc->rarInfo.ulGrant.freqHopFlag = 0;
+ dciSlotAlloc->rarInfo.ulGrant.msg3FreqAlloc.startPrb = msg3PuschInfo->fdAlloc.startPrb;
+ dciSlotAlloc->rarInfo.ulGrant.msg3FreqAlloc.numPrb = msg3PuschInfo->fdAlloc.numPrb;
+ dciSlotAlloc->rarInfo.ulGrant.k2Index = k2Index;
+ dciSlotAlloc->rarInfo.ulGrant.mcs = msg3PuschInfo->tbInfo.mcs;
+ dciSlotAlloc->rarInfo.ulGrant.tpc = 3; /* TODO : Check appropriate value to be filled */
+ /* Spec 38.213, section 8.2 : In a contention based random access
+ * procedure, the CSI request field is reserved. */
+ dciSlotAlloc->rarInfo.ulGrant.csiReq = 0;
+ }
- /* Allocate resources for msg3 */
- msg3PuschInfo = schAllocMsg3Pusch(cell->instIdx, cell->raReq[ueIdx]->rachInd->crnti, k2Index, msg3Slot);
- if(msg3PuschInfo)
+ /* Check if both DCI and RAR are sent in the same slot.
+ * If not, allocate memory RAR PDSCH slot to store RAR info
+ */
+ if(dciSlot == rarSlot)
+ dciSlotAlloc->pduPres = BOTH;
+ else
+ {
+ /* Allocate memory to schedule rarSlot to send RAR, pointer will be checked at schProcessSlotInd() */
+ SCH_ALLOC(rarSlotAlloc, sizeof(RarAlloc));
+ if(rarSlotAlloc == NULLP)
{
- /* Fill RAR info */
- dciSlotAlloc->rarInfo.raRnti = cell->raReq[ueIdx]->raRnti;
- dciSlotAlloc->rarInfo.tcrnti = cell->raReq[ueIdx]->rachInd->crnti;
- dciSlotAlloc->rarInfo.RAPID = cell->raReq[ueIdx]->rachInd->preambleIdx;
- dciSlotAlloc->rarInfo.ta = cell->raReq[ueIdx]->rachInd->timingAdv;
- dciSlotAlloc->rarInfo.ulGrant.bwpSize = cell->cellCfg.schInitialUlBwp.bwp.freqAlloc.numPrb;
- /* Spec 38.213, section 8.2, 0 : MSG3 PUSCH will be transmitted without frequency hopping */
- dciSlotAlloc->rarInfo.ulGrant.freqHopFlag = 0;
- dciSlotAlloc->rarInfo.ulGrant.msg3FreqAlloc.startPrb = msg3PuschInfo->fdAlloc.startPrb;
- dciSlotAlloc->rarInfo.ulGrant.msg3FreqAlloc.numPrb = msg3PuschInfo->fdAlloc.numPrb;
- dciSlotAlloc->rarInfo.ulGrant.k2Index = k2Index;
- dciSlotAlloc->rarInfo.ulGrant.mcs = msg3PuschInfo->tbInfo.mcs;
- dciSlotAlloc->rarInfo.ulGrant.tpc = 3; /* TODO : Check appropriate value to be filled */
- /* Spec 38.213, section 8.2 : In a contention based random access
- * procedure, the CSI request field is reserved. */
- dciSlotAlloc->rarInfo.ulGrant.csiReq = 0;
+ DU_LOG("\nERROR --> SCH : Memory Allocation failed for rarSlotAlloc");
+ SCH_FREE(dciSlotAlloc, sizeof(RarAlloc));
+ cell->schDlSlotInfo[dciSlot]->rarAlloc[ueId-1] = NULLP;
+ return false;
}
+ cell->schDlSlotInfo[rarSlot]->rarAlloc[ueId-1] = rarSlotAlloc;
- /* Check if both DCI and RAR are sent in the same slot.
- * If not, allocate memory RAR PDSCH slot to store RAR info
- */
- if(dciSlot == rarSlot)
- dciSlotAlloc->pduPres = BOTH;
- else
- {
- /* Allocate memory to schedule rarSlot to send RAR, pointer will be checked at schProcessSlotInd() */
- SCH_ALLOC(rarSlotAlloc, sizeof(RarAlloc));
- if(rarSlotAlloc == NULLP)
- {
- DU_LOG("\nERROR --> SCH : Memory Allocation failed for rarSlotAlloc");
- SCH_FREE(dciSlotAlloc, sizeof(RarAlloc));
- cell->schDlSlotInfo[dciSlot]->rarAlloc = NULLP;
- return;
- }
- cell->schDlSlotInfo[rarSlot]->rarAlloc = rarSlotAlloc;
+ /* Copy all RAR info */
+ memcpy(rarSlotAlloc, dciSlotAlloc, sizeof(RarAlloc));
+ rarSlotAlloc->rarPdcchCfg.dci.pdschCfg = &rarSlotAlloc->rarPdschCfg;
- /* Copy all RAR info */
- memcpy(rarSlotAlloc, dciSlotAlloc, sizeof(RarAlloc));
- rarSlotAlloc->rarPdcchCfg.dci.pdschCfg = &rarSlotAlloc->rarPdschCfg;
+ /* Assign correct PDU types in corresponding slots */
+ rarSlotAlloc->pduPres = PDSCH_PDU;
+ dciSlotAlloc->pduPres = PDCCH_PDU;
+ dciSlotAlloc->pdschSlot = rarSlot;
+ }
- /* Assign correct PDU types in corresponding slots */
- rarSlotAlloc->pduPres = PDSCH_PDU;
- dciSlotAlloc->pduPres = PDCCH_PDU;
- dciSlotAlloc->pdschSlot = rarSlot;
- }
+ cell->schDlSlotInfo[dciSlot]->pdcchUe = ueId;
+ cell->schDlSlotInfo[rarSlot]->pdschUe = ueId;
+ cell->schUlSlotInfo[msg3Time.slot]->puschUe = ueId;
- /* Create raCb at SCH */
- createSchRaCb(cell->raReq[ueIdx]->rachInd->crnti, cell->instIdx);
+ /* Create raCb at SCH */
+ createSchRaCb(cell->raReq[ueId-1]->rachInd->crnti, cell->instIdx);
- SCH_FREE(cell->raReq[ueIdx]->rachInd, sizeof(RachIndInfo));
- SCH_FREE(cell->raReq[ueIdx], sizeof(SchRaReq));
- }
- ueIdx++;
- } /* End of while(ueIdx < MAX_NUM_UE) */
+ /* Remove RachInd from pending RA request list */
+ SCH_FREE(cell->raReq[ueId-1]->rachInd, sizeof(RachIndInfo));
+ SCH_FREE(cell->raReq[ueId-1], sizeof(SchRaReq));
+
+ return true;
+ }
+ return false;
}
/**
/* Adding window size to window start time to get window end time */
ADD_DELTA_TO_TIME(raReq->winStartTime, raReq->winEndTime, winNumSlots);
-
cell->raReq[ueIdx -1] = raReq;
+ /* Adding UE Id to list of pending UEs to be scheduled */
+ addUeToBeScheduled(cell, ueIdx);
+
return ROK;
}
* @param[in] offset to pointA to determine freq alloc
* @return ROK
**/
-uint8_t schFillRar(SchCellCb *cell, SlotTimingInfo rarTime, uint16_t ueIdx, RarAlloc *rarAlloc, uint8_t k0Index)
+uint8_t schFillRar(SchCellCb *cell, SlotTimingInfo rarTime, uint16_t ueId, RarAlloc *rarAlloc, uint8_t k0Index)
{
- uint8_t coreset0Idx = 0;
- uint8_t numRbs = 0;
- uint8_t firstSymbol = 0;
- uint8_t numSymbols = 0;
- uint8_t offset = 0;
- uint8_t FreqDomainResource[6] = {0};
+ uint8_t coreset0Idx = 0;
+ uint8_t firstSymbol = 0, numSymbols = 0;
+ uint8_t mcs = DEFAULT_MCS; /* MCS fixed to 4 */
+ uint8_t dmrsStartSymbol, startSymbol, numSymbol ;
+ uint16_t numRbs = 0;
uint16_t tbSize = 0;
- uint8_t mcs = 4; /* MCS fixed to 4 */
SchBwpDlCfg *initialBwp = &cell->cellCfg.schInitialDlBwp;
PdcchCfg *pdcch = &rarAlloc->rarPdcchCfg;
PdschCfg *pdsch = &rarAlloc->rarPdschCfg;
BwpCfg *bwp = &rarAlloc->bwp;
- coreset0Idx = initialBwp->pdcchCommon.commonSearchSpace.coresetId;
-
/* derive the sib1 coreset0 params from table 13-1 spec 38.213 */
- numRbs = coresetIdxTable[coreset0Idx][1];
- numSymbols = coresetIdxTable[coreset0Idx][2];
- offset = coresetIdxTable[coreset0Idx][3];
+ coreset0Idx = initialBwp->pdcchCommon.commonSearchSpace.coresetId;
+ numRbs = coresetIdxTable[coreset0Idx][1];
+ numSymbols = coresetIdxTable[coreset0Idx][2];
/* calculate time domain parameters */
// note: since slot value is made sl1, RAR can be sent at all slots
uint16_t mask = 0x2000;
- for(firstSymbol=0; firstSymbol<14;firstSymbol++)
+ for(firstSymbol=0; firstSymbol<MAX_SYMB_PER_SLOT; firstSymbol++)
{
if(initialBwp->pdcchCommon.commonSearchSpace.monitoringSymbol & mask)
break;
mask = mask>>1;
}
- /* calculate the PRBs */
- freqDomRscAllocType0(((cell->cellCfg.ssbSchCfg.ssbOffsetPointA - offset)/6), (numRbs/6), FreqDomainResource);
-
/* fill BWP */
bwp->freqAlloc.numPrb = initialBwp->bwp.freqAlloc.numPrb;
bwp->freqAlloc.startPrb = initialBwp->bwp.freqAlloc.startPrb;
/* fill the PDCCH PDU */
pdcch->coresetCfg.startSymbolIndex = firstSymbol;
pdcch->coresetCfg.durationSymbols = numSymbols;
- memcpy(pdcch->coresetCfg.freqDomainResource, FreqDomainResource, FREQ_DOM_RSRC_SIZE);
+ memcpy(pdcch->coresetCfg.freqDomainResource, \
+ cell->cellCfg.schInitialDlBwp.pdcchCommon.commonSearchSpace.freqDomainRsrc, FREQ_DOM_RSRC_SIZE);
+
pdcch->coresetCfg.cceRegMappingType = 1; /* coreset0 is always interleaved */
pdcch->coresetCfg.regBundleSize = 6; /* spec-38.211 sec 7.3.2.2 */
pdcch->coresetCfg.interleaverSize = 2; /* spec-38.211 sec 7.3.2.2 */
pdcch->coresetCfg.coreSetType = 0;
+ pdcch->coresetCfg.coreSetSize = numRbs;
pdcch->coresetCfg.shiftIndex = cell->cellCfg.phyCellId;
pdcch->coresetCfg.precoderGranularity = 0; /* sameAsRegBundle */
pdcch->numDlDci = 1;
- pdcch->dci.rnti = cell->raReq[ueIdx]->raRnti; /* RA-RNTI */
+ pdcch->dci.rnti = cell->raReq[ueId-1]->raRnti; /* RA-RNTI */
pdcch->dci.scramblingId = cell->cellCfg.phyCellId;
pdcch->dci.scramblingRnti = 0;
pdcch->dci.cceIndex = 4; /* considering SIB1 is sent at cce 0-1-2-3 */
/* fill the PDSCH PDU */
uint8_t cwCount = 0;
pdsch->pduBitmap = 0; /* PTRS and CBG params are excluded */
- pdsch->rnti = cell->raReq[ueIdx]->raRnti; /* RA-RNTI */
+ pdsch->rnti = cell->raReq[ueId-1]->raRnti; /* RA-RNTI */
pdsch->pduIndex = 0;
pdsch->numCodewords = 1;
for(cwCount = 0; cwCount < pdsch->numCodewords; cwCount++)
pdsch->dmrs.nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
pdsch->dmrs.dmrsAddPos = DMRS_ADDITIONAL_POS;
+ pdsch->pdschTimeAlloc.rowIndex = k0Index;
pdsch->pdschTimeAlloc.timeAlloc.startSymb = initialBwp->pdschCommon.timeDomRsrcAllocList[k0Index].startSymbol;
pdsch->pdschTimeAlloc.timeAlloc.numSymb = initialBwp->pdschCommon.timeDomRsrcAllocList[k0Index].lengthSymbol;
pdsch->pdschFreqAlloc.freqAlloc.numPrb = \
schCalcNumPrb(tbSize, mcs, initialBwp->pdschCommon.timeDomRsrcAllocList[k0Index].lengthSymbol);
+ /* Find total symbols occupied including DMRS */
+ dmrsStartSymbol = findDmrsStartSymbol(pdsch->dmrs.dlDmrsSymbPos);
+ /* If there are no DRMS symbols, findDmrsStartSymbol() returns MAX_SYMB_PER_SLOT,
+ * in that case only PDSCH symbols are marked as occupied */
+ if(dmrsStartSymbol == MAX_SYMB_PER_SLOT)
+ {
+ startSymbol = pdsch->pdschTimeAlloc.timeAlloc.startSymb;
+ numSymbol = pdsch->pdschTimeAlloc.timeAlloc.numSymb;
+ }
+ /* If DMRS symbol is found, mark DMRS and PDSCH symbols as occupied */
+ else
+ {
+ startSymbol = dmrsStartSymbol;
+ numSymbol = pdsch->dmrs.nrOfDmrsSymbols + pdsch->pdschTimeAlloc.timeAlloc.numSymb;
+ }
+
/* Allocate the number of PRBs required for RAR PDSCH */
- if((allocatePrbDl(cell, rarTime, pdsch->pdschTimeAlloc.timeAlloc.startSymb, pdsch->pdschTimeAlloc.timeAlloc.numSymb,\
+ if((allocatePrbDl(cell, rarTime, startSymbol, numSymbol,\
&pdsch->pdschFreqAlloc.freqAlloc.startPrb, pdsch->pdschFreqAlloc.freqAlloc.numPrb)) != ROK)
{
DU_LOG("\nERROR --> SCH : allocatePrbDl() failed for RAR");
Code Review / o-du / l2.git / blobdiff