+ uint8_t ueIdx = 0;
+
+ GET_UE_IDX(tcrnti, ueIdx);
+ schCb[schInst].cells[schInst]->raCb[ueIdx -1].tcrnti = tcrnti;
+}
+
+/**
+ * @brief resource allocation for msg3 PUSCH
+ *
+ * @details
+ *
+ * Function : schAllocMsg3Pusch
+ *
+ * This function handles msg3 PUSCH allocation
+ *
+ * @param[in] Inst schInst, SCH instance
+ * @param[in] slot, current slot
+ * @param[out] msg3StartRb
+ * @param[out] msg3NumRb
+ * @return void
+ **/
+uint8_t schAllocMsg3Pusch(Inst schInst, uint16_t slot, uint16_t crnti, \
+ uint16_t *msg3StartRb, uint8_t *msg3NumRb)
+{
+ SchCellCb *cell = NULLP;
+ SchUlSlotInfo *schUlSlotInfo = NULLP;
+ uint8_t puschMu = 0;
+ uint8_t msg3SlotAlloc = 0;
+ uint8_t delta = 0;
+ uint8_t k2 = 0;
+ uint8_t startSymb = 0;
+ uint8_t symbLen = 0;
+ uint8_t startRb = 0;
+ uint8_t numRb = 0;
+ uint8_t idx = 0;
+ uint8_t mcs = 4;
+ uint8_t numPdschSymbols= 14;
+ 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 % cell->numSlots;
+
+ startRb = cell->schUlSlotInfo[msg3SlotAlloc]->puschCurrentPrb;
+ tbSize = schCalcTbSize(8); /* 6 bytes msg3 and 2 bytes header */
+ numRb = schCalcNumPrb(tbSize, mcs, numPdschSymbols);
+
+ /* allocating 1 extra RB for now */
+ numRb++;
+ /* increment PUSCH PRB */
+ cell->schUlSlotInfo[msg3SlotAlloc]->puschCurrentPrb += numRb;
+
+ for(idx=startSymb; idx<symbLen; idx++)
+ {
+ cell->schUlSlotInfo[msg3SlotAlloc]->assignedPrb[idx] = startRb + numRb;
+ }
+ schUlSlotInfo = cell->schUlSlotInfo[msg3SlotAlloc];
+
+ SCH_ALLOC(schUlSlotInfo->schPuschInfo, sizeof(SchPuschInfo));
+ if(!schUlSlotInfo->schPuschInfo)
+ {
+ DU_LOG("SCH: Memory allocation failed in schAllocMsg3Pusch");
+ return RFAILED;
+ }
+ tbSize = 0; /* since nPrb has been incremented, recalculating tbSize */
+ tbSize = schCalcTbSizeFromNPrb(numRb, mcs, numPdschSymbols);
+
+ schUlSlotInfo->schPuschInfo->crnti = crnti;
+ schUlSlotInfo->schPuschInfo->harqProcId = SCH_HARQ_PROC_ID;
+ schUlSlotInfo->schPuschInfo->resAllocType = SCH_ALLOC_TYPE_1;
+ schUlSlotInfo->schPuschInfo->fdAlloc.startPrb = startRb;
+ schUlSlotInfo->schPuschInfo->fdAlloc.numPrb = numRb;
+ schUlSlotInfo->schPuschInfo->tdAlloc.startSymb = startSymb;
+ schUlSlotInfo->schPuschInfo->tdAlloc.numSymb = symbLen;
+ 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->dmrsMappingType = DMRS_MAP_TYPE_A; /* Setting Type-A */
+ schUlSlotInfo->schPuschInfo->nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
+ schUlSlotInfo->schPuschInfo->dmrsAddPos = DMRS_ADDITIONAL_POS;
+
+ *msg3StartRb = startRb;
+ *msg3NumRb = numRb;
+ return ROK;