X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch_slot_ind.c;h=29a9480245940a9cc17720640d0b61bd3499358a;hb=a26e316791d661712939df53aa8a2e5b74b951e9;hp=9579bec54f7a4b3a7a43d3a54bc5ac635fd17d27;hpb=65443172dd60a6ea312bd3a15959dbf54ad7f045;p=o-du%2Fl2.git diff --git a/src/5gnrsch/sch_slot_ind.c b/src/5gnrsch/sch_slot_ind.c index 9579bec54..29a948024 100644 --- a/src/5gnrsch/sch_slot_ind.c +++ b/src/5gnrsch/sch_slot_ind.c @@ -49,10 +49,6 @@ SchMacDlAllocFunc schMacDlAllocOpts[] = packSchMacDlAlloc }; -SchCb schCb[SCH_MAX_INST]; -int schFillRar(RarAlloc *rarAlloc, uint16_t raRnti, uint16_t pci, uint8_t - offsetPointA); - /******************************************************************* * * @brief Handles sending DL broadcast alloc to MAC @@ -75,13 +71,12 @@ uint8_t sendDlAllocToMac(DlSchedInfo *dlSchedInfo, Inst inst) memset(&pst, 0, sizeof(Pst)); FILL_PST_SCH_TO_MAC(pst, inst); - pst.event = EVENT_DL_ALLOC; + pst.event = EVENT_DL_SCH_INFO; return(*schMacDlAllocOpts[pst.selector])(&pst, dlSchedInfo); } - /******************************************************************* * * @brief Handles slot indication at SCH @@ -98,7 +93,7 @@ uint8_t sendDlAllocToMac(DlSchedInfo *dlSchedInfo, Inst inst) * RFAILED - failure * * ****************************************************************/ -void schCalcSlotValues(SlotIndInfo slotInd, SchSlotValue *schSlotValue) +void schCalcSlotValues(SlotTimingInfo slotInd, SchSlotValue *schSlotValue) { /**************************************************************** * PHY_DELTA - the physical layer delta * @@ -113,297 +108,658 @@ void schCalcSlotValues(SlotIndInfo slotInd, SchSlotValue *schSlotValue) * on PHY_DELTA + SCHED_DELTA + BO_DELTA * ****************************************************************/ - ADD_DELTA_TO_TIME(slotInd, schSlotValue->currentTime, PHY_DELTA); - ADD_DELTA_TO_TIME(slotInd, schSlotValue->broadcastTime, PHY_DELTA + SCHED_DELTA); - ADD_DELTA_TO_TIME(slotInd, schSlotValue->rarTime, PHY_DELTA + SCHED_DELTA); - ADD_DELTA_TO_TIME(slotInd, schSlotValue->dlMsgTime, PHY_DELTA + SCHED_DELTA); + ADD_DELTA_TO_TIME(slotInd, schSlotValue->currentTime, PHY_DELTA_DL); + ADD_DELTA_TO_TIME(slotInd, schSlotValue->broadcastTime, PHY_DELTA_DL + SCHED_DELTA); + ADD_DELTA_TO_TIME(slotInd, schSlotValue->rarTime, PHY_DELTA_DL + SCHED_DELTA); + ADD_DELTA_TO_TIME(slotInd, schSlotValue->dlMsgTime, PHY_DELTA_DL + SCHED_DELTA); + ADD_DELTA_TO_TIME(slotInd, schSlotValue->ulDciTime, PHY_DELTA_DL + SCHED_DELTA); } /******************************************************************* * - * @brief + * @brief Checks if a slot is to be scheduled for SSB transmission * * @details * - * Function : + * Function : schCheckSsbOcc * * Functionality: - + * Checks if a slot is to be scheduled for SSB transmission * - * @params[in] + * @params[in] SlotTimingInfo slotTime + * SchCellCb *cell + * @return Pdu transmission + * + * ****************************************************************/ +PduTxOccsaion schCheckSsbOcc(SchCellCb *cell, SlotTimingInfo slotTime) +{ + uint8_t ssb_rep; + + ssb_rep = cell->cellCfg.ssbSchCfg.ssbPeriod; + + /* Identify SSB ocassion*/ + if ((slotTime.sfn % SCH_MIB_TRANS == 0) && (slotTime.slot ==0)) + { + return NEW_TRANSMISSION; + } + else if(cell->firstSsbTransmitted) + { + if((ssb_rep == 5) && ((slotTime.slot == 0 || slotTime.slot == 10))) + return REPEATITION; + else if((slotTime.sfn % (ssb_rep/10) == 0) && slotTime.slot == 0) + return REPEATITION; + } + /* not SSB occassion */ + return NO_TRANSMISSION; +} + +/******************************************************************* + * + * @brief Checks if a slot is to be scheduled for SIB1 transmission + * + * @details + * + * Function : schCheckSib1Occ + * + * Functionality: + * Checks if a slot is to be scheduled for SIB1 transmission + * + * @params[in] SlotTimingInfo slotTime + * SchCellCb *cell + * @return Pdu transmission + * + * ****************************************************************/ +PduTxOccsaion schCheckSib1Occ(SchCellCb *cell, SlotTimingInfo slotTime) +{ + /* Identify SIB1 occasions */ + if((slotTime.sfn % SCH_SIB1_TRANS == 0) && (slotTime.slot ==0)) + { + return NEW_TRANSMISSION; + } + else if(cell->firstSib1Transmitted) + { + if((slotTime.sfn % (cell->cellCfg.sib1SchCfg.sib1RepetitionPeriod/10) == 0) && + (slotTime.slot == 0)) + { + return REPEATITION; + } + } + /* not SIB1 occassion */ + return NO_TRANSMISSION; +} + +/******************************************************************* + * + * @brief find correct combination of k0-k1 value + * + * @details + * + * Function : findValidK0K1Value + * + * Functionality: + * find correct combination of k0-k1 value + * + * @params[in] * @return ROK - success * RFAILED - failure * - * ****************************************************************/ -uint8_t schFillBoGrantDlSchedInfo(SchCellCb *cell, DlSchedInfo *dlSchedInfo, DlMsgAlloc *dlMsgAlloc) + *******************************************************************/ +bool findValidK0K1Value(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId, bool dedMsg, uint8_t *pdschStartSymbol, uint8_t *pdschSymblLen, SlotTimingInfo *pdcchTime, SlotTimingInfo *pdschTime, SlotTimingInfo *pucchTime) { - uint8_t ueIdx, lcIdx; - uint16_t slot; - uint16_t crnti = 0; - uint16_t accumalatedSize = 0; + uint8_t numK0 = 0, k0TblIdx = 0, k0Val = 0, k0Index =0 ; + uint8_t k1TblIdx = 0, k1Index = 0, k1Val = 0, numK1 = 0; SchUeCb *ueCb = NULLP; + SchK0K1TimingInfoTbl *k0K1InfoTbl; - while(cell->boIndBitMap) + ADD_DELTA_TO_TIME(currTime, (*pdcchTime), PHY_DELTA_DL + SCHED_DELTA); +#ifdef NR_TDD + if(schGetSlotSymbFrmt(pdcchTime->slot, cell->slotFrmtBitMap) != DL_SLOT) { - slot = dlSchedInfo->schSlotValue.dlMsgTime.slot; + /* If it is not a DL slot, cannot schedule PDCCH. Return from here. */ + return false; + } +#endif - GET_RIGHT_MOST_SET_BIT(cell->boIndBitMap, ueIdx); - GET_CRNTI(crnti,ueIdx); - ueCb = &cell->ueCb[ueIdx-1]; + if(cell->schDlSlotInfo[pdcchTime->slot]->pdcchUe != 0) + { + return false; + } + + if(dedMsg == true) + { + ueCb = &cell->ueCb[ueId-1]; + k0K1InfoTbl = &ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.k0K1InfoTbl; + } + else + { + k0K1InfoTbl = &cell->cellCfg.schInitialDlBwp.k0K1InfoTbl; + } - /* allocate PDCCH and PDSCH resources for the ue */ - SCH_ALLOC(dlMsgAlloc, sizeof(DlMsgAlloc)); - if(!dlMsgAlloc) + numK0 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].numK0; + for(k0TblIdx = 0; k0TblIdx < numK0; k0TblIdx++) + { + k0Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k0Index; + if(dedMsg != true) { - DU_LOG("\nMAC: Memory Allocation failed for ded DL msg alloc"); - return RFAILED; + k0Val = cell->cellCfg.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].k0; + *pdschStartSymbol = cell->cellCfg.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].startSymbol; + *pdschSymblLen = cell->cellCfg.schInitialDlBwp.pdschCommon.timeDomRsrcAllocList[k0Index].lengthSymbol; } - memset(dlMsgAlloc, 0, sizeof(DlMsgAlloc)); - dlSchedInfo->dlMsgAlloc = dlMsgAlloc; - dlMsgAlloc->crnti = crnti; - - /* Dl ded Msg info is copied, this was earlier filled in macSchDlRlcBoInfo */ - memcpy(&dlMsgAlloc->dlMsgInfo, cell->schDlSlotInfo[slot]->dlMsgInfo, \ - sizeof(DlMsgInfo)); - - /* scheduled LC data fill */ - dlMsgAlloc->numLc = 0; - for(lcIdx = 0; lcIdx < MAX_NUM_LC; lcIdx++) + else { - if(ueCb->dlInfo.dlLcCtxt[lcIdx].bo) - { - dlMsgAlloc->lcSchInfo[dlMsgAlloc->numLc].lcId = lcIdx; - - /* calculation for BO includse RLC and MAC header size */ - dlMsgAlloc->lcSchInfo[dlMsgAlloc->numLc].schBytes = \ - ueCb->dlInfo.dlLcCtxt[lcIdx].bo + RLC_HDR_SIZE + MAC_HDR_SIZE; - accumalatedSize += dlMsgAlloc->lcSchInfo[dlMsgAlloc->numLc].schBytes; - dlMsgAlloc->numLc++; - } - ueCb->dlInfo.dlLcCtxt[lcIdx].bo = 0; + if(ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0 != NULLP) + { + k0Val = *(ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].k0); + *pdschStartSymbol = ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].startSymbol; + *pdschSymblLen = ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.pdschCfg.timeDomRsrcAllociList[k0Index].symbolLength; + } } - /* pdcch and pdsch data is filled */ - schDlRsrcAllocDlMsg(dlMsgAlloc, cell, crnti, accumalatedSize, slot); - - /* PUCCH resource */ - schAllocPucchResource(cell, dlMsgAlloc->crnti, slot); - - /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */ - SCH_FREE(cell->schDlSlotInfo[dlSchedInfo->schSlotValue.dlMsgTime.slot]->dlMsgInfo, \ - sizeof(DlMsgInfo)); - cell->schDlSlotInfo[dlSchedInfo->schSlotValue.dlMsgTime.slot]->dlMsgInfo = NULL; + ADD_DELTA_TO_TIME((*pdcchTime), (*pdschTime), k0Val); +#ifdef NR_TDD + if(schGetSlotSymbFrmt(pdschTime->slot, cell->slotFrmtBitMap) != DL_SLOT) + { + continue; + } +#endif + if(cell->schDlSlotInfo[pdschTime->slot]->pdschUe != 0) + { + continue; + } - /* after allocation is done, unset the bo bit for that ue */ - UNSET_ONE_BIT(ueIdx, cell->boIndBitMap); + numK1 = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.numK1; + for(k1TblIdx = 0; k1TblIdx < numK1; k1TblIdx++) + { + k1Index = k0K1InfoTbl->k0k1TimingInfo[pdcchTime->slot].k0Indexes[k0TblIdx].k1TimingInfo.k1Indexes[k1TblIdx]; + if(dedMsg != true) + { + k1Val = defaultUlAckTbl[k1Index]; + } + else + { + if(ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.pucchCfg.dlDataToUlAck) + { + k1Val = ueCb->ueCfg.spCellCfg.servCellCfg.initUlBwp.pucchCfg.dlDataToUlAck->dlDataToUlAckList[k1Index]; + } + } + ADD_DELTA_TO_TIME((*pdschTime),(*pucchTime), k1Val); +#ifdef NR_TDD + if(schGetSlotSymbFrmt(pucchTime->slot, cell->slotFrmtBitMap) == DL_SLOT) + { + continue; + } +#endif + if(cell->schUlSlotInfo[pucchTime->slot]->pucchUe != 0) + { + continue; + } + return true; + } } - - return ROK; + return false; } /******************************************************************* * - * @brief Handles slot indication at SCH + * @brief * * @details * - * Function : schProcessSlotInd + * Function : schFillBoGrantDlSchedInfo * * Functionality: - * Handles TTI indication received from PHY + * * @params[in] * @return ROK - success * RFAILED - failure * * ****************************************************************/ -uint8_t schProcessSlotInd(SlotIndInfo *slotInd, Inst schInst) +bool schFillBoGrantDlSchedInfo(SchCellCb *cell, SlotTimingInfo currTime, uint8_t ueId) { - uint8_t ret = ROK; - uint8_t ssb_rep, ueIdx, lcgIdx; - uint16_t slot, sfnSlot = 0; - DlSchedInfo dlSchedInfo; - DlBrdcstAlloc *dlBrdcstAlloc = NULLP; - RarAlloc *rarAlloc = NULLP; - DlMsgAlloc *msg4Alloc = NULLP; - DlMsgAlloc *dlMsgAlloc = NULLP; - SchCellCb *cell = NULLP; - - memset(&dlSchedInfo,0,sizeof(DlSchedInfo)); - schCalcSlotValues(*slotInd, &dlSchedInfo.schSlotValue); - dlBrdcstAlloc = &dlSchedInfo.brdcstAlloc; - dlBrdcstAlloc->ssbTrans = NO_SSB; - dlBrdcstAlloc->sib1Trans = NO_SIB1; - - cell = schCb[schInst].cells[schInst]; - ssb_rep = cell->cellCfg.ssbSchCfg.ssbPeriod; - memcpy(&cell->slotInfo, slotInd, sizeof(SlotIndInfo)); - dlBrdcstAlloc->ssbIdxSupported = 1; + uint8_t lcIdx = 0; + uint8_t pdschNumSymbols = 0, pdschStartSymbol = 0; + uint16_t startPrb = 0, maxFreePRB = 0; + uint16_t crnti = 0, mcsIdx = 0; + uint32_t accumalatedSize = 0; + SchUeCb *ueCb = NULLP; + CmLListCp *lcLL = NULLP; + DlMsgAlloc *dciSlotAlloc, *dlMsgAlloc; + SlotTimingInfo pdcchTime, pdschTime, pucchTime; - sfnSlot = ((dlSchedInfo.schSlotValue.broadcastTime.sfn * 10) + - dlSchedInfo.schSlotValue.broadcastTime.slot); + /* TX_PAYLOAD_HDR_LEN: Overhead which is to be Added once for any UE while estimating Accumulated TB Size + * Following flag added to keep the record whether TX_PAYLOAD_HDR_LEN is added to the first Node getting allocated. + * If both Dedicated and Default LC lists are present then First LC in Dedicated List will include this overhead + * else if only Default list is present then first node in this List will add this overhead len*/ + bool isTxPayloadLenAdded = FALSE; - slot = dlSchedInfo.schSlotValue.currentTime.slot; + GET_CRNTI(crnti,ueId); + ueCb = &cell->ueCb[ueId-1]; - dlSchedInfo.cellId = cell->cellId; - - /* Identify SSB ocassion*/ - if (sfnSlot % SCH_MIB_TRANS == 0) + if(findValidK0K1Value(cell, currTime, ueId, ueCb->ueCfg.spCellCfg.servCellCfg.initDlBwp.k0K1TblPrsnt,\ + &pdschStartSymbol, &pdschNumSymbols, &pdcchTime, &pdschTime, &pucchTime) != true ) { - dlBrdcstAlloc->ssbTrans = SSB_TRANSMISSION; + /* If a valid combination of slots to scheduled PDCCH, PDSCH and PUCCH is + * not found, do not perform resource allocation. Return from here. */ + return false; } - else if (sfnSlot % ssb_rep == 0) + + /* allocate PDCCH and PDSCH resources for the ue */ + if(cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] == NULL) { - dlBrdcstAlloc->ssbTrans = SSB_REPEAT; + + SCH_ALLOC(dciSlotAlloc, sizeof(DlMsgAlloc)); + if(!dciSlotAlloc) + { + DU_LOG("\nERROR --> SCH : Memory Allocation failed for ded DL msg alloc"); + return false; + } + cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = dciSlotAlloc; + memset(dciSlotAlloc, 0, sizeof(DlMsgAlloc)); + dciSlotAlloc->crnti = crnti; } - else + dciSlotAlloc = cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1]; + + /* Dl ded Msg info is copied, this was earlier filled in macSchDlRlcBoInfo */ + fillDlMsgInfo(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].dlMsgInfo, dciSlotAlloc->crnti); + + /*Re-Initalization per UE*/ + /* scheduled LC data fill */ + dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].numLc = 0; + isTxPayloadLenAdded = FALSE; /*Re-initlaize the flag for every UE*/ + accumalatedSize = 0; + + for(lcIdx = 0; lcIdx < MAX_NUM_LC; lcIdx++) { - /* not SSB occassion */ - } + if(ueCb->dlInfo.dlLcCtxt[lcIdx].bo) + { + /*Check the LC is Dedicated or default and accordingly LCList will + * be used*/ + if(ueCb->dlInfo.dlLcCtxt[lcIdx].isDedicated) + { + lcLL = &(ueCb->dlLcPrbEst.dedLcInfo->dedLcList); + } + else + { + lcLL = &(ueCb->dlLcPrbEst.defLcList); + } + + /*[Step2]: Update the reqPRB and Payloadsize for this LC in the appropriate List*/ + if(updateLcListReqPRB(lcLL, ueCb->dlInfo.dlLcCtxt[lcIdx].lcId,\ + (ueCb->dlInfo.dlLcCtxt[lcIdx].bo + MAC_HDR_SIZE)) != ROK) + { + DU_LOG("\nERROR --> SCH : Updation in LC List Failed"); + /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */ + if(dciSlotAlloc->numSchedInfo == 0) + { + SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc)); + cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = NULL; + } + else + memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo)); + return false; + } + } + ueCb->dlInfo.dlLcCtxt[lcIdx].bo = 0; + }//End of for loop - /* Identify SIB1 occasions */ - if(sfnSlot % cell->cellCfg.sib1SchCfg.sib1NewTxPeriod == 0) + + if ((ueCb->dlLcPrbEst.defLcList.count == 0) && \ + ((ueCb->dlLcPrbEst.dedLcInfo == NULL) || (ueCb->dlLcPrbEst.dedLcInfo->dedLcList.count == 0))) { - dlBrdcstAlloc->sib1Trans = SIB1_TRANSMISSION; + DU_LOG("\nDEBUG --> SCH : No pending BO for any LC id\n"); + UNSET_ONE_BIT(ueId, cell->boIndBitMap); + + /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */ + if(dciSlotAlloc->numSchedInfo == 0) + { + SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc)); + cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = NULL; + } + else + memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo)); + + /*TRUE because this UE has nothing to be scheduled*/ + return true; } - else if (sfnSlot % cell->cellCfg.sib1SchCfg.sib1RepetitionPeriod == 0) + + /*[Step3]: Calculate Best FREE BLOCK with MAX PRB count*/ + maxFreePRB = searchLargestFreeBlock(cell, pdschTime, &startPrb, DIR_DL); + + /*[Step4]: Estimation of PRB and BO which can be allocated to each LC in + * the list based on RRM policy*/ + + /*Either this UE contains no reservedPRB pool fir dedicated S-NSSAI or + * Num of Free PRB available is not enough to reserve Dedicated PRBs*/ + if(maxFreePRB != 0) { - dlBrdcstAlloc->sib1Trans = SIB1_REPITITION; + mcsIdx = ueCb->ueCfg.dlModInfo.mcsIndex; + if((ueCb->dlLcPrbEst.dedLcInfo == NULLP) + || ((maxFreePRB < ueCb->dlLcPrbEst.dedLcInfo->rsvdDedicatedPRB))) + { + ueCb->dlLcPrbEst.sharedNumPrb = maxFreePRB; + DU_LOG("\nDEBUG --> SCH : DL Only Default Slice is scheduled, sharedPRB Count:%d",\ + ueCb->dlLcPrbEst.sharedNumPrb); + + /*PRB Alloc for Default LCs*/ + prbAllocUsingRRMPolicy(&(ueCb->dlLcPrbEst.defLcList), FALSE, mcsIdx, pdschNumSymbols,\ + &(ueCb->dlLcPrbEst.sharedNumPrb), NULLP, &isTxPayloadLenAdded, NULLP); + } + else + { + ueCb->dlLcPrbEst.sharedNumPrb = maxFreePRB - ueCb->dlLcPrbEst.dedLcInfo->rsvdDedicatedPRB; + + /*PRB Alloc for Dedicated LCs*/ + prbAllocUsingRRMPolicy(&(ueCb->dlLcPrbEst.dedLcInfo->dedLcList), TRUE, mcsIdx, pdschNumSymbols,\ + &(ueCb->dlLcPrbEst.sharedNumPrb), &(ueCb->dlLcPrbEst.dedLcInfo->rsvdDedicatedPRB), &isTxPayloadLenAdded, NULLP); + + /*PRB Alloc for Default LCs*/ + prbAllocUsingRRMPolicy(&(ueCb->dlLcPrbEst.defLcList), FALSE, mcsIdx, pdschNumSymbols, \ + &(ueCb->dlLcPrbEst.sharedNumPrb), &(ueCb->dlLcPrbEst.dedLcInfo->rsvdDedicatedPRB), &isTxPayloadLenAdded, NULLP); + } } - else + + /*[Step5]:Traverse each LCID in LcList to calculate the exact Scheduled Bytes + * using allocated BO per LC and Update dlMsgAlloc(BO report for MAC*/ + if(ueCb->dlLcPrbEst.dedLcInfo != NULLP) + updateGrantSizeForBoRpt(&(ueCb->dlLcPrbEst.dedLcInfo->dedLcList), dciSlotAlloc, NULLP, &(accumalatedSize)); + + updateGrantSizeForBoRpt(&(ueCb->dlLcPrbEst.defLcList), dciSlotAlloc, NULLP, &(accumalatedSize)); + + /*Below case will hit if NO LC(s) are allocated due to resource crunch*/ + if (!accumalatedSize) { - /* not SIB1 occassion */ + if(maxFreePRB == 0) + { + DU_LOG("\nERROR --> SCH : NO FREE PRB!!"); + } + else + { + /*Schedule the LC for next slot*/ + DU_LOG("\nDEBUG --> SCH : No LC has been scheduled"); + } + /* Not Freeing dlMsgAlloc as ZERO BO REPORT to be sent to RLC so that + * Allocation can be done in next slot*/ + return false; } - if(dlBrdcstAlloc->ssbTrans || dlBrdcstAlloc->sib1Trans) + /*[Step6]: pdcch and pdsch data is filled */ + if((schDlRsrcAllocDlMsg(cell, pdschTime, crnti, accumalatedSize, dciSlotAlloc, startPrb, pdschStartSymbol, pdschNumSymbols)) != ROK) { - dlSchedInfo.isBroadcastPres = true; - slot = dlSchedInfo.schSlotValue.broadcastTime.slot; - ret = schBroadcastAlloc(cell,dlBrdcstAlloc,slot); - if(ret != ROK) + DU_LOG("\nERROR --> SCH : Scheduling of DL dedicated message failed"); + + /* Free the dl ded msg info allocated in macSchDlRlcBoInfo */ + if(dciSlotAlloc->numSchedInfo == 0) { - DU_LOG("\nschBroadcastAlloc failed"); - return (ret); + SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc)); + cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId -1] = NULL; } + else + memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo)); + return false; } - /* check for RAR */ - if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.rarTime.slot]->rarInfo != NULLP) + /* TODO : Update the scheduling byte report for multiple LC based on QCI + * and Priority */ + /* As of now, the total number of bytes scheduled for a slot is divided + * equally amongst all LC with pending data. This is avoid starving of any + * LC + * */ +#if 0 + accumalatedSize = accumalatedSize/dlMsgAlloc->numLc; + for(lcIdx = 0; lcIdx < dlMsgAlloc->numLc; lcIdx ++) + dlMsgAlloc->lcSchInfo[lcIdx].schBytes = accumalatedSize; +#endif + + /* Check if both DCI and DL_MSG are sent in the same slot. + * If not, allocate memory for DL_MSG PDSCH slot to store PDSCH info */ + + if(pdcchTime.slot == pdschTime.slot) + { + dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pduPres = BOTH; + dciSlotAlloc->numSchedInfo++; + } + else { - slot = dlSchedInfo.schSlotValue.rarTime.slot; - SCH_ALLOC(rarAlloc, sizeof(RarAlloc)); - if(!rarAlloc) + /* Allocate memory to schedule dlMsgAlloc to send DL_Msg, pointer will be checked at schProcessSlotInd() */ + if(cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] == NULLP) { - DU_LOG("\nMAC: Memory Allocation failed for RAR alloc"); - return RFAILED; + SCH_ALLOC(dlMsgAlloc, sizeof(DlMsgAlloc)); + if(dlMsgAlloc == NULLP) + { + DU_LOG("\nERROR --> SCH : Memory Allocation failed for dlMsgAlloc"); + if(dciSlotAlloc->numSchedInfo == 0) + { + SCH_FREE(dciSlotAlloc, sizeof(DlMsgAlloc)); + cell->schDlSlotInfo[pdcchTime.slot]->dlMsgAlloc[ueId-1] = NULLP; + } + else + memset(&dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], 0, sizeof(DlMsgSchInfo)); + return false; + } + cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1] = dlMsgAlloc; + memset(dlMsgAlloc, 0, sizeof(DlMsgAlloc)); + dlMsgAlloc->crnti = dciSlotAlloc->crnti; } + else + dlMsgAlloc = cell->schDlSlotInfo[pdschTime.slot]->dlMsgAlloc[ueId-1]; + + /* Copy all DL_MSG info */ + memcpy(&dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo], \ + &dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo], sizeof(DlMsgSchInfo)); + dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].dlMsgPdcchCfg.dci.pdschCfg = \ + &dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].dlMsgPdschCfg; + + /* Assign correct PDU types in corresponding slots */ + dlMsgAlloc->dlMsgSchedInfo[dlMsgAlloc->numSchedInfo].pduPres = PDSCH_PDU; + dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pduPres = PDCCH_PDU; + dciSlotAlloc->dlMsgSchedInfo[dciSlotAlloc->numSchedInfo].pdschSlot = pdschTime.slot; + + dciSlotAlloc->numSchedInfo++; + dlMsgAlloc->numSchedInfo++; + } - dlSchedInfo.rarAlloc = rarAlloc; + schAllocPucchResource(cell, pucchTime, crnti); + cell->schDlSlotInfo[pdcchTime.slot]->pdcchUe = ueId; + cell->schDlSlotInfo[pdschTime.slot]->pdschUe = ueId; + cell->schUlSlotInfo[pucchTime.slot]->pucchUe = ueId; - /* RAR info is copied, this was earlier filled in schProcessRachInd */ - memcpy(&rarAlloc->rarInfo,cell->schDlSlotInfo[slot]->rarInfo, sizeof(RarInfo)); + /* after allocation is done, unset the bo bit for that ue */ + UNSET_ONE_BIT(ueId, cell->boIndBitMap); + + return true; +} - /* pdcch and pdsch data is filled */ - schFillRar(rarAlloc, - cell->schDlSlotInfo[slot]->rarInfo->raRnti, - cell->cellCfg.phyCellId, - cell->cellCfg.ssbSchCfg.ssbOffsetPointA); +/******************************************************************* + * + * @brief Handles slot indication at SCH + * + * @details + * + * Function : schProcessSlotInd + * + * Functionality: + * Handles TTI indication received from PHY + * + * @params[in] + * @return ROK - success + * RFAILED - failure + * + * ****************************************************************/ +uint8_t schProcessSlotInd(SlotTimingInfo *slotInd, Inst schInst) +{ + uint8_t ueId, ueIdx, ret = ROK; + uint16_t slot; + bool isRarPending = false, isRarScheduled = false; + bool isMsg4Pending = false, isMsg4Scheduled = false; + bool isUlGrantPending = false, isUlGrantScheduled = false; + bool isDlMsgPending = false, isDlMsgScheduled = false; + CmLList *pendingUeNode; + DlSchedInfo dlSchedInfo; + DlBrdcstAlloc *dlBrdcstAlloc = NULLP; + SchCellCb *cell = NULLP; - SCH_FREE(cell->schDlSlotInfo[slot]->rarInfo,sizeof(RarAlloc)); - cell->schDlSlotInfo[slot]->rarInfo = NULLP; - } + memset(&dlSchedInfo, 0, sizeof(DlSchedInfo)); + schCalcSlotValues(*slotInd, &dlSchedInfo.schSlotValue); + dlBrdcstAlloc = &dlSchedInfo.brdcstAlloc; + dlBrdcstAlloc->ssbTrans = NO_TRANSMISSION; + dlBrdcstAlloc->sib1Trans = NO_TRANSMISSION; - /* check for MSG4 */ - if((cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo != NULLP) && - (cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo->isMsg4Pdu)) + cell = schCb[schInst].cells[schInst]; + if(cell == NULLP) { - slot = dlSchedInfo.schSlotValue.dlMsgTime.slot; + DU_LOG("\nERROR --> SCH : Cell Does not exist"); + return RFAILED; + } + memcpy(&cell->slotInfo, slotInd, sizeof(SlotTimingInfo)); + dlBrdcstAlloc->ssbIdxSupported = SSB_IDX_SUPPORTED; + + dlSchedInfo.cellId = cell->cellId; + slot = dlSchedInfo.schSlotValue.broadcastTime.slot; - SCH_ALLOC(msg4Alloc, sizeof(DlMsgAlloc)); - if(!msg4Alloc) + /* Check for SSB occassion */ + dlBrdcstAlloc->ssbTrans = schCheckSsbOcc(cell, dlSchedInfo.schSlotValue.broadcastTime); + if(dlBrdcstAlloc->ssbTrans) + { + if(schBroadcastSsbAlloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK) { - DU_LOG("\nMAC: Memory Allocation failed for msg4 alloc"); - return RFAILED; + DU_LOG("\nERROR --> SCH : schBroadcastSsbAlloc failed"); + dlBrdcstAlloc->ssbTrans = NO_TRANSMISSION; } + else + { + dlSchedInfo.isBroadcastPres = true; + if((dlBrdcstAlloc->ssbTrans == NEW_TRANSMISSION) && (!cell->firstSsbTransmitted)) + cell->firstSsbTransmitted = true; + } + } - dlSchedInfo.dlMsgAlloc = msg4Alloc; - - /* Msg4 info is copied, this was earlier filled in macSchDlRlcBoInfo */ - memcpy(&msg4Alloc->dlMsgInfo, cell->schDlSlotInfo[slot]->dlMsgInfo, \ - sizeof(DlMsgInfo)); - - /* pdcch and pdsch data is filled */ - schDlRsrcAllocMsg4(msg4Alloc, cell, dlSchedInfo.schSlotValue.dlMsgTime.slot); - - /* PUCCH resource */ - schAllocPucchResource(cell, msg4Alloc->dlMsgInfo.crnti, dlSchedInfo.schSlotValue.dlMsgTime.slot); - - SCH_FREE(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo, sizeof(DlMsgInfo)); - cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo = NULL; + /* Check for SIB1 occassion */ + dlBrdcstAlloc->sib1Trans = schCheckSib1Occ(cell, dlSchedInfo.schSlotValue.broadcastTime); + if(dlBrdcstAlloc->sib1Trans) + { + if(schBroadcastSib1Alloc(cell, dlSchedInfo.schSlotValue.broadcastTime, dlBrdcstAlloc) != ROK) + { + DU_LOG("\nERROR --> SCH : schBroadcastSib1Alloc failed"); + dlBrdcstAlloc->sib1Trans = NO_TRANSMISSION; + } + else + { + dlSchedInfo.isBroadcastPres = true; + if((dlBrdcstAlloc->sib1Trans == NEW_TRANSMISSION) && (!cell->firstSib1Transmitted)) + cell->firstSib1Transmitted = true; + } } - /* check if UL grant must be sent in this slot for a SR/BSR that had been received */ - for(ueIdx=0; ueIdxnumActvUe; ueIdx++) + + /* Select first UE in the linked list to be scheduled next */ + pendingUeNode = cell->ueToBeScheduled.first; + if(pendingUeNode) { - uint32_t totDataReq = 0; /* in bytes */ - DciInfo *dciInfo = NULLP; - SchUeCb *ueCb = NULLP; - - ueCb = &cell->ueCb[ueIdx]; - /* check for SR */ - if(ueCb->srRcvd) + if(pendingUeNode->node) { - totDataReq = UL_GRANT_SIZE; /*fixing so that all control msgs can be handled in SR */ - ueCb->srRcvd = false; + ueId = *(uint8_t *)(pendingUeNode->node); + + /* If RAR is pending for this UE, schedule PDCCH,PDSCH to send RAR and + * PUSCH to receive MSG3 as per k0-k2 configuration*/ + if(cell->raReq[ueId-1] != NULLP) + { + isRarPending = true; + isRarScheduled = schProcessRaReq(cell, *slotInd, ueId); + } + + /* If MSG4 is pending for this UE, schedule PDCCH,PDSCH to send MSG4 and + * PUCCH to receive UL msg as per k0-k1 configuration */ + if(cell->raCb[ueId-1].msg4recvd) + { + isMsg4Pending = true; + isMsg4Scheduled = schProcessMsg4Req(cell, *slotInd, ueId); + } + + if(isRarPending || isMsg4Pending) + { + /* If RAR or MSG is successfully scheduled then + * remove UE from linked list since no pending msgs for this UE */ + if(isRarScheduled || isMsg4Scheduled) + { + SCH_FREE(pendingUeNode->node, sizeof(uint8_t)); + deleteNodeFromLList(&cell->ueToBeScheduled, pendingUeNode); + } + /* If RAR/MSG4 is pending but couldnt be scheduled then, + * put this UE at the end of linked list to be scheduled later */ + else + { + cmLListAdd2Tail(&cell->ueToBeScheduled, cmLListDelFrm(&cell->ueToBeScheduled, pendingUeNode)); + } + } + + if(cell->ueCb[ueId-1].srRcvd || cell->ueCb[ueId-1].bsrRcvd) + { + isUlGrantPending = true; + isUlGrantScheduled = schProcessSrOrBsrReq(cell, *slotInd, ueId); + } + + if((cell->boIndBitMap) & (1<ueToBeScheduled, cmLListDelFrm(&cell->ueToBeScheduled, pendingUeNode)); + } + else + { + SCH_FREE(pendingUeNode->node, sizeof(uint8_t)); + deleteNodeFromLList(&cell->ueToBeScheduled, pendingUeNode); + } } - /* check for BSR */ - for(lcgIdx=0; lcgIdxschDlSlotInfo[dlSchedInfo.schSlotValue.rarTime.slot]->rarAlloc[ueIdx] != NULLP) { - totDataReq+= ueCb->bsrInfo[lcgIdx].dataVol; - ueCb->bsrInfo[lcgIdx].dataVol = 0; + slot = dlSchedInfo.schSlotValue.rarTime.slot; + dlSchedInfo.rarAlloc[ueIdx] = cell->schDlSlotInfo[slot]->rarAlloc[ueIdx]; + cell->schDlSlotInfo[slot]->rarAlloc[ueIdx] = NULLP; } - if(totDataReq > 0) /* UL grant must be provided for this UE in this slot */ + + /* If DL-Msg PDCCH/PDSCH is scheduled for a UE at this slot, fill + * specific interface structure to send to MAC */ + if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgAlloc[ueIdx] != NULLP) { - SchPuschInfo schPuschInfo; - memset(&schPuschInfo, 0, sizeof(SchPuschInfo)); - - SCH_ALLOC(dciInfo, sizeof(DciInfo)); - if(!dciInfo) - { - DU_LOG("\nMAC: Memory Allocation failed for dciInfo alloc"); - return RFAILED; - } - memset(dciInfo,0,sizeof(DciInfo)); - /* update the SFN and SLOT */ - memcpy(&dlSchedInfo.schSlotValue.ulDciTime, slotInd, sizeof(SlotIndInfo)); - slot = dlSchedInfo.schSlotValue.ulDciTime.slot; - /* Update PUSCH allocation */ - schFillPuschAlloc(ueCb, slot, totDataReq, &schPuschInfo); - /* Fill DCI for UL grant */ - schFillUlDci(ueCb, schPuschInfo, dciInfo); - memcpy(&dciInfo->slotIndInfo, &dlSchedInfo.schSlotValue.ulDciTime, sizeof(SlotIndInfo)); - dlSchedInfo.ulGrant = dciInfo; + slot = dlSchedInfo.schSlotValue.dlMsgTime.slot; + dlSchedInfo.dlMsgAlloc[ueIdx] = cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx]; + cell->schDlSlotInfo[slot]->dlMsgAlloc[ueIdx] = NULLP; } + } - /* Check for pending BO grant for LC */ - if((cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo != NULLP) && - (!cell->schDlSlotInfo[dlSchedInfo.schSlotValue.dlMsgTime.slot]->dlMsgInfo->isMsg4Pdu)) + if(cell->schDlSlotInfo[dlSchedInfo.schSlotValue.ulDciTime.slot]->ulGrant != NULLP) { - schFillBoGrantDlSchedInfo(cell, &dlSchedInfo, dlMsgAlloc); + slot = dlSchedInfo.schSlotValue.ulDciTime.slot; + dlSchedInfo.ulGrant = cell->schDlSlotInfo[slot]->ulGrant; + cell->schDlSlotInfo[slot]->ulGrant = NULLP; } - /* send msg to MAC */ + /* Send msg to MAC */ ret = sendDlAllocToMac(&dlSchedInfo, schInst); if(ret != ROK) { - DU_LOG("\nSending DL Broadcast allocation from SCH to MAC failed"); + DU_LOG("\nERROR --> SCH : Sending DL Broadcast allocation from SCH to MAC failed"); return (ret); } schInitDlSlot(cell->schDlSlotInfo[slot]); schUlResAlloc(cell, schInst); - return ret; }