#include "sch.h"
#include "sch_utils.h"
-extern SchCb schCb[SCH_MAX_INST];
-extern uint8_t puschDeltaTable[MAX_MU_PUSCH];
+SchCb schCb[SCH_MAX_INST];
+uint8_t puschDeltaTable[MAX_MU_PUSCH];
/**
* @brief calculate ra-rnti function.
uint16_t calculateRaRnti(uint8_t symbolIdx, uint8_t slotIdx, uint8_t freqIdx)
{
uint16_t raRnti = 0;
- uint8_t ulCarrierIdx = 0; /* configured to 0 */
-
- raRnti = (1+symbolIdx+(14*slotIdx)+(14*80*freqIdx)+(14*80*8*ulCarrierIdx));
+ uint8_t ulCarrierIdx = 0; /* Uplink carrier used for MSG1 transmission. 0:NUL carrier; 1:SUL carrier */
+ /* Refer to spec 38.321, section 5.1.3 */
+ raRnti = (1 + symbolIdx + (14*slotIdx) + (14*80*freqIdx) + (14*80*8*ulCarrierIdx));
return raRnti;
}
* @param[out] msg3NumRb
* @return void
**/
-uint8_t schAllocMsg3Pusch(Inst schInst, uint16_t slot, uint16_t crnti, \
- uint16_t *msg3StartRb, uint8_t *msg3NumRb)
+SchPuschInfo* schAllocMsg3Pusch(Inst schInst, uint16_t slot, uint16_t crnti, uint16_t msg3SlotAlloc)
{
- SchCellCb *cell = NULLP;
- SchUlSlotInfo *schUlSlotInfo = NULLP;
- uint8_t puschMu = 0;
- uint8_t msg3SlotAlloc = 0;
- uint8_t delta = 0;
- uint8_t k2 = 0;
+ SchCellCb *cell = NULLP;
+ SchUlSlotInfo *schUlSlotInfo = NULLP;
uint8_t startSymb = 0;
uint8_t symbLen = 0;
uint8_t startRb = 0;
uint16_t tbSize = 0;
cell = schCb[schInst].cells[schInst];
- // puschMu = cell->cellCfg.puschMu;
- delta = puschDeltaTable[puschMu];
- k2 = cell->cellCfg.schInitialUlBwp.puschCommon.k2;
- startSymb = cell->cellCfg.schInitialUlBwp.puschCommon.startSymbol;
- symbLen = cell->cellCfg.schInitialUlBwp.puschCommon.lengthSymbol;
-
- /* Slot allocation for msg3 based on 38.214 section 6.1.2.1 */
- msg3SlotAlloc = slot + k2 + delta;
- msg3SlotAlloc = msg3SlotAlloc % SCH_NUM_SLOTS;
+ startSymb = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[0].startSymbol;
+ symbLen = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[0].symbolLength;
startRb = cell->schUlSlotInfo[msg3SlotAlloc]->puschCurrentPrb;
tbSize = schCalcTbSize(8); /* 6 bytes msg3 and 2 bytes header */
SCH_ALLOC(schUlSlotInfo->schPuschInfo, sizeof(SchPuschInfo));
if(!schUlSlotInfo->schPuschInfo)
{
- DU_LOG("SCH: Memory allocation failed in schAllocMsg3Pusch");
- return RFAILED;
+ DU_LOG("\nERROR --> SCH : Memory allocation failed in schAllocMsg3Pusch");
+ return NULLP;
}
tbSize = 0; /* since nPrb has been incremented, recalculating tbSize */
tbSize = schCalcTbSizeFromNPrb(numRb, mcs, numPdschSymbols);
-
+ 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->fdAlloc.numPrb = numRb;
schUlSlotInfo->schPuschInfo->tdAlloc.startSymb = startSymb;
schUlSlotInfo->schPuschInfo->tdAlloc.numSymb = symbLen;
- schUlSlotInfo->schPuschInfo->tbInfo.mcs = mcs;
+ schUlSlotInfo->schPuschInfo->tbInfo.qamOrder = 2; /* QPSK modulation */
+ schUlSlotInfo->schPuschInfo->tbInfo.mcs = mcs;
+ schUlSlotInfo->schPuschInfo->tbInfo.mcsTable = SCH_MCS_TABLE_QAM_64;
schUlSlotInfo->schPuschInfo->tbInfo.ndi = 1; /* new transmission */
schUlSlotInfo->schPuschInfo->tbInfo.rv = 0;
schUlSlotInfo->schPuschInfo->tbInfo.tbSize = tbSize; /*Considering 2 PRBs */
schUlSlotInfo->schPuschInfo->nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
schUlSlotInfo->schPuschInfo->dmrsAddPos = DMRS_ADDITIONAL_POS;
- *msg3StartRb = startRb;
- *msg3NumRb = numRb;
-
- return ROK;
+ return schUlSlotInfo->schPuschInfo;
}
+/**
+ * @brief Processes any pending RA request
+ *
+ * @details
+ *
+ * Function : schProcessRaReq
+ *
+ * This function process pending RA request
+ *
+ * @param[in] Current timing of the cell
+ * @return ROK
+ **/
+void schProcessRaReq(SlotTimingInfo currTime, SchCellCb *cell)
+{
+ uint8_t ueIdx = 0;
+ SchPuschInfo *msg3PuschInfo;
+ RarInfo *rarInfo = NULLP;
+ uint8_t delta = 0;
+ uint8_t k2Index = 0, k2 = 0;
+ uint8_t puschMu = 0;
+ uint16_t rarSlot = 0;
+ uint16_t msg3Slot = 0;
+#ifdef NR_TDD
+ uint16_t slotIdx = 0;
+#endif
+ while(ueIdx < MAX_NUM_UE)
+ {
+ if(cell->raReq[ueIdx] == NULLP)
+ {
+ ueIdx++;
+ continue;
+ }
+
+ //puschMu = cell->cellCfg.puschMu;
+ delta = puschDeltaTable[puschMu];
+ k2 = cell->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList[k2Index].k2;
+
+ /* RAR will sent with a delay of RAR_DELAY */
+ rarSlot = (currTime.slot + RAR_DELAY + PHY_DELTA_DL) % cell->numSlots;
+#ifdef NR_TDD
+ for(slotIdx=0; slotIdx<cell->numSlots;slotIdx++)
+ {
+ /* Slot allocation for msg3 based on 38.214 section 6.1.2.1 */
+ msg3Slot = (rarSlot+delta+k2)%cell->numSlots;
+
+ if((schGetSlotSymbFrmt(rarSlot, cell->slotFrmtBitMap) != DL_SLOT) &&\
+ (schGetSlotSymbFrmt(msg3Slot, cell->slotFrmtBitMap) != UL_SLOT))
+ {
+ rarSlot = (rarSlot + 1) % cell->numSlots;
+ continue;
+ }
+ break;
+ }
+ if(slotIdx>=cell->numSlots)
+ {
+ DU_LOG("\nERROR --> SCH : NO Slot for Msg2 with Msg3 Grant\n");
+ return RFAILED;
+ }
+#else
+ /* Slot allocation for msg3 based on 38.214 section 6.1.2.1 */
+ msg3Slot = rarSlot + k2 + delta;
+ msg3Slot = msg3Slot % cell->numSlots;
+#endif
+
+ SchDlSlotInfo *schDlSlotInfo = cell->schDlSlotInfo[rarSlot]; /* RAR will sent in the next slot */
+
+ /* Allocate the rarInfo, this pointer will be checked at schProcessSlotInd function */
+ SCH_ALLOC(rarInfo, sizeof(RarInfo));
+ if(rarInfo == NULLP)
+ {
+ DU_LOG("\nERROR --> SCH : Memory Allocation failed for rarInfo");
+ return RFAILED;
+ }
+
+ schDlSlotInfo->rarInfo = rarInfo;
+
+ /* create raCb at SCH */
+ createSchRaCb(cell->raReq[ueIdx]->rachInd->crnti, cell->instIdx);
+
+ /* allocate resources for msg3 */
+ msg3PuschInfo = schAllocMsg3Pusch(cell->instIdx, rarSlot, cell->raReq[ueIdx]->rachInd->crnti, msg3Slot);
+ if(msg3PuschInfo)
+ {
+ /* fill RAR info */
+ rarInfo->raRnti = cell->raReq[ueIdx]->raRnti;
+ rarInfo->tcrnti = cell->raReq[ueIdx]->rachInd->crnti;
+ rarInfo->RAPID = cell->raReq[ueIdx]->rachInd->preambleIdx;
+ rarInfo->ta = cell->raReq[ueIdx]->rachInd->timingAdv;
+ rarInfo->ulGrant.bwpSize = cell->cellCfg.schInitialUlBwp.bwp.freqAlloc.numPrb;
+ /* Spec 38.213, section 8.2, 0 : MSG3 PUSCH will be transmitted without frequency hopping */
+ rarInfo->ulGrant.freqHopFlag = 0;
+ rarInfo->ulGrant.msg3FreqAlloc.startPrb = msg3PuschInfo->fdAlloc.startPrb;
+ rarInfo->ulGrant.msg3FreqAlloc.numPrb = msg3PuschInfo->fdAlloc.numPrb;
+ rarInfo->ulGrant.k2Index = k2Index;
+ rarInfo->ulGrant.mcs = msg3PuschInfo->tbInfo.mcs;
+ 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. */
+ rarInfo->ulGrant.csiReq = 0;
+ }
+
+ SCH_FREE(cell->raReq[ueIdx]->rachInd, sizeof(RachIndInfo));
+ SCH_FREE(cell->raReq[ueIdx], sizeof(SchRaReq));
+ ueIdx++;
+
+ } /* End of while(ueIdx < MAX_NUM_UE) */
+}
/**
* @brief process rach indication function.
uint8_t schProcessRachInd(RachIndInfo *rachInd, Inst schInst)
{
SchCellCb *cell = schCb[schInst].cells[schInst];
- RarInfo *rarInfo = NULLP;
- uint16_t raRnti = 0;
- uint16_t rarSlot = 0;
- uint16_t msg3StartRb;
- uint8_t msg3NumRb;
- uint8_t ret = ROK;
+ SchRaReq *raReq = NULLP;
+ float slotDuration;
+ uint8_t winNumSlots;
+ uint8_t ueIdx;
- /* RAR will sent with a delay of RAR_DELAY */
- rarSlot = (rachInd->timingInfo.slot+RAR_DELAY+PHY_DELTA)%SCH_NUM_SLOTS;
-
- SchDlSlotInfo *schDlSlotInfo = cell->schDlSlotInfo[rarSlot]; /* RAR will sent in the next slot */
-
- /* Allocate the rarInfo, this pointer will be checked at schProcessSlotInd function */
- SCH_ALLOC(rarInfo, sizeof(RarInfo));
- if(rarInfo == NULLP)
+ SCH_ALLOC(raReq, sizeof(SchRaReq));
+ if(!raReq)
{
- DU_LOG("\nMAC: Memory Allocation failed for rarInfo");
+ DU_LOG("\nERROR --> SCH : Memory allocation failure in schProcessRachInd");
+ SCH_FREE(rachInd, sizeof(RachIndInfo));
return RFAILED;
}
- schDlSlotInfo->rarInfo = rarInfo;
-
/* calculate the ra-rnti value */
- raRnti = calculateRaRnti(rachInd->symbolIdx,rachInd->slotIdx,rachInd->freqIdx);
+ raReq->raRnti = calculateRaRnti(rachInd->symbolIdx, rachInd->slotIdx, rachInd->freqIdx);
+ raReq->rachInd = rachInd;
+ raReq->winStartTime.sfn = rachInd->timingInfo.sfn;
+ raReq->winStartTime.slot = rachInd->timingInfo.slot;
+
+ /* Converting window size from ms to number of slots */
+ slotDuration = (1 / pow(2, cell->cellCfg.numerology));
+ winNumSlots = (float)cell->cellCfg.schRachCfg.raRspWindow / slotDuration;
+
+ /* Adding window size to window start time to get window end time */
+ ADD_DELTA_TO_TIME(raReq->winStartTime, raReq->winEndTime, winNumSlots);
- /* create raCb at SCH */
- createSchRaCb(rachInd->crnti,schInst);
+ /* Storing RA request in cellCb */
+ GET_UE_IDX(rachInd->crnti, ueIdx);
+ cell->raReq[ueIdx] = raReq;
- /* allocate resources for msg3 */
- ret = schAllocMsg3Pusch(schInst, rarSlot, rachInd->crnti, &msg3StartRb, &msg3NumRb);
- if(ret == ROK)
- {
- /* fill RAR info */
- rarInfo->raRnti = raRnti;
- rarInfo->tcrnti = rachInd->crnti;
- rarInfo->RAPID = rachInd->preambleIdx;
- rarInfo->ta = rachInd->timingAdv;
- rarInfo->msg3FreqAlloc.startPrb = msg3StartRb;
- rarInfo->msg3FreqAlloc.numPrb = msg3NumRb;
- }
- return ret;
+ return ROK;
}
/**
* @param[in] offset to pointA to determine freq alloc
* @return ROK
**/
-uint8_t schFillRar(RarAlloc *rarAlloc, uint16_t raRnti, uint16_t pci, uint8_t offsetPointA)
+uint8_t schFillRar(RarAlloc *rarAlloc, uint16_t raRnti, uint16_t pci, uint8_t offsetPointA, \
+bool ssbPresent, bool sib1Present)
{
Inst inst = 0;
uint8_t coreset0Idx = 0;
uint8_t offset = 0;
uint8_t FreqDomainResource[6] = {0};
uint16_t tbSize = 0;
- uint8_t numPdschSymbols = 12; /* considering pdsch region from 2 to 13 */
uint8_t mcs = 4; /* MCS fixed to 4 */
SchBwpDlCfg *initialBwp = &schCb[inst].cells[inst]->cellCfg.schInitialDlBwp;
-
PdcchCfg *pdcch = &rarAlloc->rarPdcchCfg;
PdschCfg *pdsch = &rarAlloc->rarPdschCfg;
BwpCfg *bwp = &rarAlloc->bwp;
+ FreqDomainAlloc *sib1PdschFreqAlloc = NULL;
coreset0Idx = initialBwp->pdcchCommon.commonSearchSpace.coresetId;
pdsch->codeword[cwCount].mcsIndex = mcs; /* mcs configured to 4 */
pdsch->codeword[cwCount].mcsTable = 0; /* notqam256 */
pdsch->codeword[cwCount].rvIndex = 0;
- tbSize = schCalcTbSize(10); /* 8 bytes RAR and 2 bytes padding */
+ /* RAR PDU length and FAPI payload header length */
+ tbSize = schCalcTbSize(RAR_PAYLOAD_SIZE + TX_PAYLOAD_HDR_LEN);
pdsch->codeword[cwCount].tbSize = tbSize;
}
pdsch->dataScramblingId = pci;
pdsch->numLayers = 1;
pdsch->transmissionScheme = 0;
pdsch->refPoint = 0;
- pdsch->dmrs.dlDmrsSymbPos = 2;
+ pdsch->dmrs.dlDmrsSymbPos = 4; /* Bitmap value 00000000000100 i.e. using 3rd symbol for PDSCH DMRS */
pdsch->dmrs.dmrsConfigType = 0; /* type-1 */
pdsch->dmrs.dlDmrsScramblingId = pci;
pdsch->dmrs.scid = 0;
pdsch->dmrs.nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
pdsch->dmrs.dmrsAddPos = DMRS_ADDITIONAL_POS;
pdsch->pdschFreqAlloc.resourceAllocType = 1; /* RAT type-1 RIV format */
- pdsch->pdschFreqAlloc.freqAlloc.startPrb = offset + SCH_SSB_NUM_PRB; /* the RB numbering starts from coreset0, and PDSCH is always above SSB */
- pdsch->pdschFreqAlloc.freqAlloc.numPrb = schCalcNumPrb(tbSize,mcs,numPdschSymbols);
+ /* The RB numbering starts from coreset0 */
+ pdsch->pdschFreqAlloc.freqAlloc.startPrb = PDSCH_START_RB;
+ if(ssbPresent)
+ {
+ /* PDSCH is always above SSB */
+ pdsch->pdschFreqAlloc.freqAlloc.startPrb = offsetPointA + SCH_SSB_NUM_PRB + 1;
+ }
+ if(sib1Present)
+ {
+ /* Must not overlap with SIB1 */
+ sib1PdschFreqAlloc = &schCb[inst].cells[inst]->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc;
+ pdsch->pdschFreqAlloc.freqAlloc.startPrb = sib1PdschFreqAlloc->startPrb + sib1PdschFreqAlloc->numPrb + 1;
+ }
+ pdsch->pdschFreqAlloc.freqAlloc.numPrb = schCalcNumPrb(tbSize, mcs, \
+ initialBwp->pdschCommon.timeDomRsrcAllocList[0].lengthSymbol);
pdsch->pdschFreqAlloc.vrbPrbMapping = 0; /* non-interleaved */
- pdsch->pdschTimeAlloc.timeAlloc.startSymb = initialBwp->pdschCommon.startSymbol;
- pdsch->pdschTimeAlloc.timeAlloc.numSymb = initialBwp->pdschCommon.lengthSymbol;
+ pdsch->pdschTimeAlloc.timeAlloc.startSymb = initialBwp->pdschCommon.timeDomRsrcAllocList[0].startSymbol;
+ pdsch->pdschTimeAlloc.timeAlloc.numSymb = initialBwp->pdschCommon.timeDomRsrcAllocList[0].lengthSymbol;
pdsch->beamPdschInfo.numPrgs = 1;
pdsch->beamPdschInfo.prgSize = 1;
pdsch->beamPdschInfo.digBfInterfaces = 0;
Code Review / o-du / l2.git / blobdiff