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, uint16_t msg3SlotAlloc)
+SchPuschInfo* schAllocMsg3Pusch(Inst schInst, uint16_t slot, uint16_t crnti, uint16_t msg3SlotAlloc)
{
- SchCellCb *cell = NULLP;
- SchUlSlotInfo *schUlSlotInfo = NULLP;
+ 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];
- startSymb = cell->cellCfg.schInitialUlBwp.puschCommon.startSymbol;
- symbLen = cell->cellCfg.schInitialUlBwp.puschCommon.lengthSymbol;
+ 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 */
if(!schUlSlotInfo->schPuschInfo)
{
DU_LOG("\nERROR --> SCH : Memory allocation failed in schAllocMsg3Pusch");
- return RFAILED;
+ return NULLP;
}
tbSize = 0; /* since nPrb has been incremented, recalculating tbSize */
tbSize = schCalcTbSizeFromNPrb(numRb, mcs, numPdschSymbols);
schUlSlotInfo->schPuschInfo->nrOfDmrsSymbols = NUM_DMRS_SYMBOLS;
schUlSlotInfo->schPuschInfo->dmrsAddPos = DMRS_ADDITIONAL_POS;
- *msg3StartRb = startRb;
- *msg3NumRb = numRb;
- return ROK;
+ return schUlSlotInfo->schPuschInfo;
}
-
-
/**
- * @brief process rach indication function.
+ * @brief Processes any pending RA request
*
* @details
*
- * Function : schProcessRachInd
- *
- * This function process rach indication
- *
- * @param[in] rachInd parameters
- * @param[in] shed instance
+ * Function : schProcessRaReq
+ *
+ * This function process pending RA request
+ *
+ * @param[in] Current timing of the cell
* @return ROK
**/
-uint8_t schProcessRachInd(RachIndInfo *rachInd, Inst schInst)
+void schProcessRaReq(SlotTimingInfo currTime, SchCellCb *cell)
{
- SchCellCb *cell = schCb[schInst].cells[schInst];
+ uint8_t ueIdx = 0;
+ SchPuschInfo *msg3PuschInfo;
RarInfo *rarInfo = NULLP;
- uint16_t raRnti = 0;
- uint16_t rarSlot = 0;
- uint16_t msg3StartRb;
- uint8_t msg3NumRb;
- uint8_t ret = ROK;
uint8_t delta = 0;
- uint8_t k2 = 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
- //puschMu = cell->cellCfg.puschMu;
- delta = puschDeltaTable[puschMu];
- k2 = cell->cellCfg.schInitialUlBwp.puschCommon.k2;
- /* RAR will sent with a delay of RAR_DELAY */
- rarSlot = (rachInd->timingInfo.slot+RAR_DELAY+PHY_DELTA_DL)%cell->numSlots;
-#ifdef NR_TDD
- for(slotIdx=0; slotIdx<cell->numSlots;slotIdx++)
+ while(ueIdx < MAX_NUM_UE)
{
- /* 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))
+ if(cell->raReq[ueIdx] == NULLP)
{
- rarSlot = (rarSlot + 1) % cell->numSlots;
+ ueIdx++;
continue;
}
- break;
- }
- if(slotIdx>=cell->numSlots)
- {
- DU_LOG("\nERROR --> SCH : NO Slot for Msg2 with Msg3 Grant\n");
- return RFAILED;
- }
+
+ //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;
+ /* 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 */
+ 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)
+ /* 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.
+ *
+ * @details
+ *
+ * Function : schProcessRachInd
+ *
+ * This function process rach indication
+ *
+ * @param[in] rachInd parameters
+ * @param[in] shed instance
+ * @return ROK
+ **/
+uint8_t schProcessRachInd(RachIndInfo *rachInd, Inst schInst)
+{
+ SchCellCb *cell = schCb[schInst].cells[schInst];
+ SchRaReq *raReq = NULLP;
+ float slotDuration;
+ uint8_t winNumSlots;
+ uint8_t ueIdx;
+
+ SCH_ALLOC(raReq, sizeof(SchRaReq));
+ if(!raReq)
{
- DU_LOG("\nERROR --> SCH : 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, msg3Slot);
- 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;
}
/**