X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch.c;h=8fd6a871da1e62307c5041dce320840be0f0b22f;hb=a733e46886692ec1525a60243fcfe4465da6457b;hp=b89b6f0b41e9c33a13e3ab2a5f2719871ff13fb7;hpb=7c6820e987fadb1102e5891408ad33a8ce36ba95;p=o-du%2Fl2.git diff --git a/src/5gnrsch/sch.c b/src/5gnrsch/sch.c index b89b6f0b4..8fd6a871d 100644 --- a/src/5gnrsch/sch.c +++ b/src/5gnrsch/sch.c @@ -48,7 +48,6 @@ #include "sch.h" #include "sch_utils.h" -extern SchCb schCb[SCH_MAX_INST]; void SchFillCfmPst(Pst *reqPst,Pst *cfmPst,RgMngmt *cfm); /* local defines */ @@ -113,7 +112,7 @@ uint8_t schActvInit(Ent entity, Inst instId, Region region, Reason reason) * reason for success/failure of this function. * * @param[in] RgCfg *cfg, the Configuaration information - * @return U16 + * @return uint16_t * -# LCM_REASON_NOT_APPL * -# LCM_REASON_INVALID_MSGTYPE * -# LCM_REASON_MEM_NOAVAIL @@ -123,7 +122,7 @@ uint8_t SchInstCfg(RgCfg *cfg, Inst dInst) uint16_t ret = LCM_REASON_NOT_APPL; Inst inst = (dInst - SCH_INST_START); - printf("\nEntered SchInstCfg()"); + DU_LOG("\nDEBUG --> SCH : Entered SchInstCfg()"); /* Check if Instance Configuration is done already */ if (schCb[inst].schInit.cfgDone == TRUE) { @@ -149,26 +148,26 @@ uint8_t SchInstCfg(RgCfg *cfg, Inst dInst) schCb[inst].genCfg.isSCellActDeactAlgoEnable = cfg->s.schInstCfg.genCfg.isSCellActDeactAlgoEnable; #endif schCb[inst].genCfg.startCellId = cfg->s.schInstCfg.genCfg.startCellId; -#if 0 + /* Initialzie the timer queue */ - memset(&schCb[inst].tmrTq, 0, sizeof(CmTqType)*RGSCH_TQ_SIZE); + memset(&schCb[inst].tmrTq, 0, sizeof(CmTqType) * SCH_TQ_SIZE); /* Initialize the timer control point */ memset(&schCb[inst].tmrTqCp, 0, sizeof(CmTqCp)); schCb[inst].tmrTqCp.tmrLen = RGSCH_TQ_SIZE; /* SS_MT_TMR needs to be enabled as schActvTmr needs instance information */ - /* Timer Registration request to SSI */ + /* Timer Registration request to system services */ if (ODU_REG_TMR_MT(schCb[inst].schInit.ent, dInst, (int)schCb[inst].genCfg.tmrRes, schActvTmr) != ROK) { - RLOG_ARG0(L_ERROR,DBG_INSTID,inst, "SchInstCfg(): Failed to " + DU_LOG("\nERROR --> SCH : SchInstCfg(): Failed to " "register timer."); return (LCM_REASON_MEM_NOAVAIL); } -#endif + /* Set Config done in TskInit */ schCb[inst].schInit.cfgDone = TRUE; - printf("\nScheduler gen config done"); + DU_LOG("\nINFO --> SCH : Scheduler gen config done"); return ret; } @@ -193,19 +192,23 @@ uint8_t SchInstCfg(RgCfg *cfg, Inst dInst) **/ uint8_t SchProcGenCfgReq(Pst *pst, RgMngmt *cfg) { - uint8_t ret = LCM_PRIM_OK; - uint16_t reason = LCM_REASON_NOT_APPL; + uint8_t ret = LCM_PRIM_OK; + uint16_t reason = LCM_REASON_NOT_APPL; RgMngmt cfm; Pst cfmPst; +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : GENERAL_CFG_REQ\n"); +#endif + if(pst->dstInst < SCH_INST_START) { - DU_LOG("\nInvalid inst ID"); - DU_LOG("\nSchProcGenCfgReq(): " + DU_LOG("\nERROR --> SCH : Invalid inst ID"); + DU_LOG("\nERROR --> SCH : SchProcGenCfgReq(): " "pst->dstInst=%d SCH_INST_START=%d", pst->dstInst,SCH_INST_START); return ROK; } - printf("\nReceived scheduler gen config"); + DU_LOG("\nINFO --> SCH : Received scheduler gen config"); /* Fill the post structure for sending the confirmation */ memset(&cfmPst, 0 , sizeof(Pst)); SchFillCfmPst(pst, &cfmPst, cfg); @@ -226,7 +229,7 @@ uint8_t SchProcGenCfgReq(Pst *pst, RgMngmt *cfg) default: ret = LCM_PRIM_NOK; reason = LCM_REASON_INVALID_ELMNT; - DU_LOG("\nInvalid Elmnt=%d", cfg->hdr.elmId.elmnt); + DU_LOG("\nERROR --> SCH : Invalid Elmnt=%d", cfg->hdr.elmId.elmnt); break; } @@ -239,7 +242,7 @@ uint8_t SchProcGenCfgReq(Pst *pst, RgMngmt *cfg) cfm.cfm.reason = reason; SchSendCfgCfm(&cfmPst, &cfm); - /* SPutSBuf(pst->region, pst->pool, (Data *)cfg, sizeof(RgMngmt)); */ + /* SCH_FREE(pst->region, pst->pool, (Data *)cfg, sizeof(RgMngmt)); */ return ROK; }/*-- SchProcGenCfgReq --*/ @@ -255,16 +258,19 @@ uint8_t SchProcGenCfgReq(Pst *pst, RgMngmt *cfg) * a cell. * * @param[in] Pst *pst - * @param[in] SlotIndInfo *slotInd + * @param[in] SlotTimingInfo *slotInd * @return S16 * -# ROK * -# RFAILED **/ -uint8_t MacSchSlotInd(Pst *pst, SlotIndInfo *slotInd) +uint8_t MacSchSlotInd(Pst *pst, SlotTimingInfo *slotInd) { Inst inst = pst->dstInst-SCH_INST_START; - /* Now call the TOM (Tfu ownership module) primitive to process further */ +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_SLOT_IND_TO_SCH\n"); +#endif + schProcessSlotInd(slotInd, inst); return ROK; @@ -289,7 +295,12 @@ uint8_t MacSchSlotInd(Pst *pst, SlotIndInfo *slotInd) uint8_t MacSchRachInd(Pst *pst, RachIndInfo *rachInd) { Inst inst = pst->dstInst-SCH_INST_START; - DU_LOG("\nSCH : Received Rach indication"); + +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_RACH_IND_TO_SCH\n"); +#endif + + DU_LOG("\nINFO --> SCH : Received Rach indication"); schProcessRachInd(rachInd, inst); return ROK; } @@ -313,24 +324,242 @@ uint8_t MacSchRachInd(Pst *pst, RachIndInfo *rachInd) * ****************************************************************/ uint8_t MacSchCrcInd(Pst *pst, CrcIndInfo *crcInd) { +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_CRC_IND_TO_SCH\n"); +#endif + switch(crcInd->crcInd[0]) { case CRC_FAILED: - DU_LOG("\nSCH : Received CRC indication. CRC Status [FAILURE]"); + DU_LOG("\nDEBUG --> SCH : Received CRC indication. CRC Status [FAILURE]"); break; case CRC_PASSED: - DU_LOG("\nSCH : Received CRC indication. CRC Status [PASS]"); + DU_LOG("\nDEBUG --> SCH : Received CRC indication. CRC Status [PASS]"); break; default: - DU_LOG("\nSCH : Invalid CRC state %d", crcInd->crcInd[0]); + DU_LOG("\nDEBUG --> SCH : Invalid CRC state %d", crcInd->crcInd[0]); return RFAILED; } return ROK; } +#ifdef NR_TDD +/** + *@brief Returns TDD periodicity in micro seconds + * + * @details + * + * Function : schGetPeriodicityInMsec + * + * This API retunrs TDD periodicity in micro seconds + * + * @param[in] DlUlTxPeriodicity + * @return periodicityInMsec + * **/ + +uint16_t schGetPeriodicityInMsec(DlUlTxPeriodicity tddPeriod) +{ + uint16_t periodicityInMsec = 0; + switch(tddPeriod) + { + case TX_PRDCTY_MS_0P5: + { + periodicityInMsec = 500; + break; + } + case TX_PRDCTY_MS_0P625: + { + periodicityInMsec = 625; + break; + } + case TX_PRDCTY_MS_1: + { + periodicityInMsec = 1000; + break; + } + case TX_PRDCTY_MS_1P25: + { + periodicityInMsec = 1250; + break; + } + case TX_PRDCTY_MS_2: + { + periodicityInMsec = 2000; + break; + } + case TX_PRDCTY_MS_2P5: + { + periodicityInMsec = 2500; + break; + } + case TX_PRDCTY_MS_5: + { + periodicityInMsec = 5000; + break; + } + case TX_PRDCTY_MS_10: + { + periodicityInMsec = 10000; + break; + } + default: + { + DU_LOG("\nERROR --> SCH : Invalid DlUlTxPeriodicity:%d", tddPeriod); + } + } + + return periodicityInMsec; +} + + +/** + * @brief init TDD slot config + * + * @details + * + * Function : schInitTddSlotCfg + * + * This API is invoked after receiving schCellCfg + * + * @param[in] schCellCb *cell + * @param[in] SchCellCfg *schCellCfg + * @return void + **/ +void schInitTddSlotCfg(SchCellCb *cell, SchCellCfg *schCellCfg) +{ + uint16_t periodicityInMicroSec = 0; + int8_t slotIdx, symbIdx; + + periodicityInMicroSec = schGetPeriodicityInMsec(schCellCfg->tddCfg.tddPeriod); + cell->numSlotsInPeriodicity = (periodicityInMicroSec * pow(2, schCellCfg->numerology))/1000; + cell->slotFrmtBitMap = 0; + cell->symbFrmtBitMap = 0; + for(slotIdx = cell->numSlotsInPeriodicity-1; slotIdx >= 0; slotIdx--) + { + symbIdx = 0; + /* If the first and last symbol are the same, the entire slot is the same type */ + if((schCellCfg->tddCfg.slotCfg[slotIdx][symbIdx] == schCellCfg->tddCfg.slotCfg[slotIdx][MAX_SYMB_PER_SLOT-1]) && + schCellCfg->tddCfg.slotCfg[slotIdx][symbIdx] != FLEXI_SLOT) + { + switch(schCellCfg->tddCfg.slotCfg[slotIdx][symbIdx]) + { + case DL_SLOT: + { + /*BitMap to be set to 00 */ + cell->slotFrmtBitMap = (cell->slotFrmtBitMap<<2); + break; + } + case UL_SLOT: + { + /*BitMap to be set to 01 */ + cell->slotFrmtBitMap = ((cell->slotFrmtBitMap<<2) | (UL_SLOT)); + break; + } + default: + DU_LOG("\nERROR --> SCH : Invalid slot Config in schInitTddSlotCfg"); + } + continue; + } + /* slot config is flexible. First set slotBitMap to 10 */ + cell->slotFrmtBitMap = ((cell->slotFrmtBitMap<<2) | (FLEXI_SLOT)); + + /* Now set symbol bitmap */ + for(symbIdx = MAX_SYMB_PER_SLOT-1; symbIdx >= 0; symbIdx--) + { + switch(schCellCfg->tddCfg.slotCfg[slotIdx][symbIdx]) + { + case DL_SLOT: + { + /*symbol BitMap to be set to 00 */ + cell->symbFrmtBitMap = (cell->symbFrmtBitMap<<2); + break; + } + case UL_SLOT: + { + /*symbol BitMap to be set to 01 */ + cell->symbFrmtBitMap = ((cell->symbFrmtBitMap<<2) | (UL_SLOT)); + break; + } + case FLEXI_SLOT: + { + /*symbol BitMap to be set to 10 */ + cell->symbFrmtBitMap = ((cell->symbFrmtBitMap<<2) | (FLEXI_SLOT)); + break; + } + default: + DU_LOG("\nERROR --> SCH : Invalid slot Config in schInitTddSlotCfg"); + } + } + } +} +#endif + +/** + * @brief Fill SSB start symbol + * + * @details + * + * Function : fillSsbStartSymb + * + * This API stores SSB start index per beam + * + * @param[in] SchCellCb *cellCb + * @return int + * -# ROK + * -# RFAILED + **/ +void fillSsbStartSymb(SchCellCb *cellCb) +{ + uint8_t cnt, scs, symbIdx, ssbStartSymbArr[SCH_MAX_SSB_BEAM]; + + scs = cellCb->cellCfg.ssbSchCfg.scsCommon; + + memset(ssbStartSymbArr, 0, sizeof(SCH_MAX_SSB_BEAM)); + symbIdx = 0; + /* Determine value of "n" based on Section 4.1 of 3GPP TS 38.213 */ + switch(scs) + { + case SCS_15KHZ: + { + if(cellCb->cellCfg.dlFreq <= 300000) + cnt = 2;/* n = 0, 1 */ + else + cnt = 4; /* n = 0, 1, 2, 3 */ + for(uint8_t idx=0; idxcellCfg.dlFreq <= 300000) + cnt = 1;/* n = 0 */ + else + cnt = 2; /* n = 0, 1 */ + for(uint8_t idx=0; idx SCH : SCS %d is currently not supported", scs); + } + memset(cellCb->ssbStartSymbArr, 0, sizeof(SCH_MAX_SSB_BEAM)); + memcpy(cellCb->ssbStartSymbArr, ssbStartSymbArr, SCH_MAX_SSB_BEAM); + +} + /** - * @brief inti cellCb based on cellCfg + * @brief init cellCb based on cellCfg * * @details * @@ -346,28 +575,65 @@ uint8_t MacSchCrcInd(Pst *pst, CrcIndInfo *crcInd) **/ uint8_t schInitCellCb(Inst inst, SchCellCfg *schCellCfg) { - SchCellCb *cell; + SchCellCb *cell= NULLP; SCH_ALLOC(cell, sizeof(SchCellCb)); if(!cell) { - DU_LOG("\nMemory allocation failed in schInitCellCb"); + DU_LOG("\nERROR --> SCH : Memory allocation failed in schInitCellCb"); return RFAILED; } cell->cellId = schCellCfg->cellId; cell->instIdx = inst; - switch(schCellCfg->ssbSchCfg.scsCommon) + switch(schCellCfg->numerology) { - case SCH_SCS_15KHZ: + case SCH_NUMEROLOGY_0: { - cell->numSlots = SCH_NUM_SLOTS; + cell->numSlots = SCH_MU0_NUM_SLOTS; + } + break; + case SCH_NUMEROLOGY_1: + { + cell->numSlots = SCH_MU1_NUM_SLOTS; + } + break; + case SCH_NUMEROLOGY_2: + { + cell->numSlots = SCH_MU2_NUM_SLOTS; + } + break; + case SCH_NUMEROLOGY_3: + { + cell->numSlots = SCH_MU3_NUM_SLOTS; + } + break; + case SCH_NUMEROLOGY_4: + { + cell->numSlots = SCH_MU4_NUM_SLOTS; } break; default: - DU_LOG("\nSCS %d not supported", schCellCfg->ssbSchCfg.scsCommon); + DU_LOG("\nERROR --> SCH : Numerology %d not supported", schCellCfg->numerology); + } +#ifdef NR_TDD + schInitTddSlotCfg(cell, schCellCfg); +#endif + + SCH_ALLOC(cell->schDlSlotInfo, cell->numSlots * sizeof(SchDlSlotInfo*)); + if(!cell->schDlSlotInfo) + { + DU_LOG("\nERROR --> SCH : Memory allocation failed in schInitCellCb for schDlSlotInfo"); + return RFAILED; + } + + SCH_ALLOC(cell->schUlSlotInfo, cell->numSlots * sizeof(SchUlSlotInfo*)); + if(!cell->schUlSlotInfo) + { + DU_LOG("\nERROR --> SCH : Memory allocation failed in schInitCellCb for schUlSlotInfo"); + return RFAILED; } - for(uint8_t idx=0; idxnumSlots; idx++) { SchDlSlotInfo *schDlSlotInfo; SchUlSlotInfo *schUlSlotInfo; @@ -376,15 +642,15 @@ uint8_t schInitCellCb(Inst inst, SchCellCfg *schCellCfg) SCH_ALLOC(schDlSlotInfo, sizeof(SchDlSlotInfo)); if(!schDlSlotInfo) { - DU_LOG("\nMemory allocation failed in schInitCellCb"); - return RFAILED; + DU_LOG("\nERROR --> SCH : Memory allocation failed in schInitCellCb"); + return RFAILED; } /* UL Alloc */ SCH_ALLOC(schUlSlotInfo, sizeof(SchUlSlotInfo)); if(!schUlSlotInfo) { - DU_LOG("\nMemory allocation failed in schInitCellCb"); + DU_LOG("\nERROR --> SCH : Memory allocation failed in schInitCellCb"); return RFAILED; } @@ -395,9 +661,12 @@ uint8_t schInitCellCb(Inst inst, SchCellCfg *schCellCfg) cell->schUlSlotInfo[idx] = schUlSlotInfo; } + cell->firstSsbTransmitted = false; + cell->firstSib1Transmitted = false; + fillSsbStartSymb(cell); schCb[inst].cells[inst] = cell; - DU_LOG("\nCell init completed for cellId:%d", cell->cellId); + DU_LOG("\nINFO --> SCH : Cell init completed for cellId:%d", cell->cellId); return ROK; } @@ -411,14 +680,14 @@ uint8_t schInitCellCb(Inst inst, SchCellCfg *schCellCfg) * * Fill SIB1 configuration * - * @param[in] Inst schInst : scheduler instance + * @param[in] uint8_t bandwidth : total available bandwidth + * uint8_t numSlots : total slots per SFN * SchSib1Cfg *sib1SchCfg : cfg to be filled * uint16_t pci : physical cell Id * uint8_t offsetPointA : offset * @return void **/ -void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ - uint8_t offsetPointA) +void fillSchSib1Cfg(uint8_t mu, uint8_t bandwidth, uint8_t numSlots, SchSib1Cfg *sib1SchCfg, uint16_t pci, uint8_t offsetPointA) { uint8_t coreset0Idx = 0; uint8_t searchSpace0Idx = 0; @@ -431,9 +700,9 @@ void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ uint8_t mValue = 0; uint8_t firstSymbol = 0; /* need to calculate using formula mentioned in 38.213 */ uint8_t slotIndex = 0; - uint8_t FreqDomainResource[6] = {0}; + uint8_t FreqDomainResource[FREQ_DOM_RSRC_SIZE] = {0}; uint16_t tbSize = 0; - uint8_t numPdschSymbols = 12; /* considering pdsch region from 2 to 13 */ + uint8_t ssbIdx = 0; PdcchCfg *pdcch = &(sib1SchCfg->sib1PdcchCfg); PdschCfg *pdsch = &(sib1SchCfg->sib1PdschCfg); @@ -459,14 +728,26 @@ void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ * [(O . 2^u + i . M ) ] mod numSlotsPerSubframe * assuming u = 0, i = 0, numSlotsPerSubframe = 10 * Also, from this configuration, coreset0 is only on even subframe */ - slotIndex = ((oValue * 1) + (0 * mValue)) % 10; + slotIndex = (int)((oValue*pow(2, mu)) + floor(ssbIdx*mValue))%numSlots; sib1SchCfg->n0 = slotIndex; - /* calculate the PRBs */ - freqDomRscAllocType0(((offsetPointA-offset)/6), (numRbs/6), FreqDomainResource); - /* fill BWP */ - bwp->freqAlloc.numPrb = MAX_NUM_RB; /* whole of BW */ + switch(bandwidth) + { + case BANDWIDTH_20MHZ: + { + bwp->freqAlloc.numPrb = TOTAL_PRB_20MHZ_MU0; + } + break; + case BANDWIDTH_100MHZ: + { + bwp->freqAlloc.numPrb = TOTAL_PRB_100MHZ_MU1; + } + break; + default: + DU_LOG("\nERROR --> SCH : Bandwidth %d not supported", bandwidth); + + } bwp->freqAlloc.startPrb = 0; bwp->subcarrierSpacing = 0; /* 15Khz */ bwp->cyclicPrefix = 0; /* normal */ @@ -475,7 +756,11 @@ void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ pdcch->coresetCfg.coreSetSize = numRbs; pdcch->coresetCfg.startSymbolIndex = firstSymbol; pdcch->coresetCfg.durationSymbols = numSymbols; - memcpy(pdcch->coresetCfg.freqDomainResource,FreqDomainResource,6); + + /* Fill Bitmap for PRBs in coreset */ + fillCoresetFeqDomAllocMap(((offsetPointA-offset)/6), (numRbs/6), FreqDomainResource); + covertFreqDomRsrcMapToIAPIFormat(FreqDomainResource, pdcch->coresetCfg.freqDomainResource); + 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 */ @@ -512,31 +797,32 @@ void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ pdsch->codeword[cwCount].mcsIndex = sib1SchCfg->sib1Mcs; pdsch->codeword[cwCount].mcsTable = 0; /* notqam256 */ pdsch->codeword[cwCount].rvIndex = 0; - tbSize = schCalcTbSize(sib1SchCfg->sib1PduLen); + tbSize = schCalcTbSize(sib1SchCfg->sib1PduLen + 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.numDmrsCdmGrpsNoData = 1; - pdsch->dmrs.dmrsPorts = 0; + pdsch->dmrs.dmrsPorts = 0x0001; pdsch->dmrs.mappingType = DMRS_MAP_TYPE_A; /* Type-A */ 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,sib1SchCfg->sib1Mcs,numPdschSymbols); + /* the RB numbering starts from coreset0, and PDSCH is always above SSB */ + pdsch->pdschFreqAlloc.freqAlloc.startPrb = offsetPointA + SCH_SSB_NUM_PRB; + pdsch->pdschFreqAlloc.freqAlloc.numPrb = schCalcNumPrb(tbSize,sib1SchCfg->sib1Mcs, NUM_PDSCH_SYMBOL); pdsch->pdschFreqAlloc.vrbPrbMapping = 0; /* non-interleaved */ pdsch->pdschTimeAlloc.rowIndex = 1; - pdsch->pdschTimeAlloc.timeAlloc.startSymb = 2; /* spec-38.214, Table 5.1.2.1-1 */ - pdsch->pdschTimeAlloc.timeAlloc.numSymb = numPdschSymbols; + /* This is Intel's requirement. PDSCH should start after PDSCH DRMS symbol */ + pdsch->pdschTimeAlloc.timeAlloc.startSymb = 3; /* spec-38.214, Table 5.1.2.1-1 */ + pdsch->pdschTimeAlloc.timeAlloc.numSymb = NUM_PDSCH_SYMBOL; pdsch->beamPdschInfo.numPrgs = 1; pdsch->beamPdschInfo.prgSize = 1; pdsch->beamPdschInfo.digBfInterfaces = 0; @@ -547,51 +833,6 @@ void fillSchSib1Cfg(Inst schInst, SchSib1Cfg *sib1SchCfg, uint16_t pci, \ } -/** - * @brief Fill SSB start symbol - * - * @details - * - * Function : fillSsbStartSymb - * - * This API stores SSB start index per beam - * - * @param[in] SchCellCb *cellCb - * @return int - * -# ROK - * -# RFAILED - **/ -void fillSsbStartSymb(SchCellCb *cellCb) -{ - uint8_t cnt, scs; - - scs = cellCb->cellCfg.ssbSchCfg.scsCommon; - uint8_t ssbStartSymbArr[SCH_MAX_SSB_BEAM]; - - memset(ssbStartSymbArr, 0, sizeof(SCH_MAX_SSB_BEAM)); - /* Determine value of "n" based on Section 4.1 of 3GPP TS 38.213 */ - switch(scs) - { - case SCH_SCS_15KHZ: - { - uint8_t symbIdx=0; - cnt = 2;/* n = 0, 1 for SCS = 15KHz */ - for(uint8_t idx=0; idxssbStartSymbArr, 0, sizeof(SCH_MAX_SSB_BEAM)); - memcpy(cellCb->ssbStartSymbArr, ssbStartSymbArr, SCH_MAX_SSB_BEAM); - -} - /** * @brief cell config from MAC to SCH. * @@ -614,19 +855,41 @@ uint8_t SchHdlCellCfgReq(Pst *pst, SchCellCfg *schCellCfg) SchCellCfgCfm schCellCfgCfm; Pst rspPst; Inst inst = pst->dstInst-1; + uint8_t coreset0Idx = 0; + uint8_t numRbs = 0; + uint8_t offset = 0; + uint8_t freqDomainResource[FREQ_DOM_RSRC_SIZE] = {0}; + SchPdschConfig pdschCfg; + +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_SCH_CELL_CFG\n"); +#endif schInitCellCb(inst, schCellCfg); cellCb = schCb[inst].cells[inst]; //cells is of MAX_CELLS, why inst cellCb->macInst = pst->srcInst; /* derive the SIB1 config parameters */ - fillSchSib1Cfg( - inst, - &(schCellCfg->sib1SchCfg), - schCellCfg->phyCellId, + fillSchSib1Cfg(schCellCfg->numerology, schCellCfg->bandwidth, cellCb->numSlots, + &(schCellCfg->sib1SchCfg), schCellCfg->phyCellId, schCellCfg->ssbSchCfg.ssbOffsetPointA); memcpy(&cellCb->cellCfg, schCellCfg, sizeof(SchCellCfg)); + /* Fill coreset frequencyDomainResource bitmap */ + coreset0Idx = cellCb->cellCfg.schInitialDlBwp.pdcchCommon.commonSearchSpace.coresetId; + numRbs = coresetIdxTable[coreset0Idx][1]; + offset = coresetIdxTable[coreset0Idx][3]; + fillCoresetFeqDomAllocMap(((cellCb->cellCfg.ssbSchCfg.ssbOffsetPointA - offset)/6), (numRbs/6), freqDomainResource); + covertFreqDomRsrcMapToIAPIFormat(freqDomainResource, \ + cellCb->cellCfg.schInitialDlBwp.pdcchCommon.commonSearchSpace.freqDomainRsrc); + + /* Fill K0 - K1 table for common cfg*/ + BuildK0K1Table(cellCb, &cellCb->cellCfg.schInitialDlBwp.k0K1InfoTbl, true, cellCb->cellCfg.schInitialDlBwp.pdschCommon, + pdschCfg, DEFAULT_UL_ACK_LIST_COUNT, defaultUlAckTbl); + + BuildK2InfoTable(cellCb, cellCb->cellCfg.schInitialUlBwp.puschCommon.timeDomRsrcAllocList,\ + cellCb->cellCfg.schInitialUlBwp.puschCommon.numTimeDomRsrcAlloc, &cellCb->cellCfg.schInitialUlBwp.msg3K2InfoTbl, \ + &cellCb->cellCfg.schInitialUlBwp.k2InfoTbl); /* Initializing global variables */ cellCb->actvUeBitMap = 0; cellCb->boIndBitMap = 0; @@ -640,7 +903,6 @@ uint8_t SchHdlCellCfgReq(Pst *pst, SchCellCfg *schCellCfg) schCellCfgCfm.rsp = RSP_OK; ret = (*SchCellCfgCfmOpts[rspPst.selector])(&rspPst, &schCellCfgCfm); - return ret; } @@ -665,52 +927,104 @@ uint8_t MacSchDlRlcBoInfo(Pst *pst, DlRlcBoInfo *dlBoInfo) { uint8_t lcId = 0; uint16_t ueIdx = 0; - uint16_t slot; + uint16_t slot = 0; +#ifdef NR_TDD + uint16_t slotIdx = 0; +#endif + DlMsgInfo dlMsgInfo; SchUeCb *ueCb = NULLP; SchCellCb *cell = NULLP; SchDlSlotInfo *schDlSlotInfo = NULLP; - Inst inst = pst->dstInst-SCH_INST_START; - DU_LOG("\nSCH : Received RLC BO Status indication"); + +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_DL_RLC_BO_INFO_TO_SCH\n"); +#endif + + DU_LOG("\nDEBUG --> SCH : Received RLC BO Status indication"); cell = schCb[inst].cells[inst]; + if(cell == NULLP) + { + DU_LOG("\nERROR --> SCH : MacSchDlRlcBoInfo(): Cell does not exists"); + return RFAILED; + } + GET_UE_IDX(dlBoInfo->crnti, ueIdx); ueCb = &cell->ueCb[ueIdx-1]; lcId = dlBoInfo->lcId; - if(lcId == SRB1_LCID || lcId == SRB2_LCID || lcId == SRB3_LCID || \ - (lcId >= MIN_DRB_LCID && lcId <= MAX_DRB_LCID)) + memset(&dlMsgInfo, 0, sizeof(DlMsgInfo)); + dlMsgInfo.crnti = dlBoInfo->crnti; + dlMsgInfo.ndi = 1; + dlMsgInfo.harqProcNum = 0; + dlMsgInfo.dlAssignIdx = 0; + dlMsgInfo.pucchTpc = 0; + dlMsgInfo.pucchResInd = 0; + dlMsgInfo.harqFeedbackInd = 0; + dlMsgInfo.dciFormatId = 1; + + if(lcId == SRB0_LCID) { - SET_ONE_BIT(ueIdx, cell->boIndBitMap); - ueCb->dlLcCtxt[lcId].bo = dlBoInfo->dataVolume; + cell->raCb[ueIdx -1].msg4recvd = true; + dlMsgInfo.dlMsgPduLen = dlBoInfo->dataVolume; + cell->raCb[ueIdx -1].dlMsgInfo = dlMsgInfo; } - else if(lcId != SRB0_LCID) + else { - DU_LOG("\nSCH : Invalid LC Id %d in MacSchDlRlcBoInfo", lcId); - return RFAILED; - } + /* TODO : These part of changes will be corrected during DL scheduling as + * per K0 - K1 -K2 */ + if(lcId == SRB1_LCID || lcId == SRB2_LCID || lcId == SRB3_LCID || \ + (lcId >= MIN_DRB_LCID && lcId <= MAX_DRB_LCID)) + { + SET_ONE_BIT(ueIdx, cell->boIndBitMap); + if(ueCb->dlInfo.dlLcCtxt[lcId].lcId == lcId) + { + ueCb->dlInfo.dlLcCtxt[lcId].bo = dlBoInfo->dataVolume; + } + else + { + DU_LOG("ERROR --> SCH: LCID:%d is not configured in SCH Cb",lcId); + return RFAILED; + } + } + else if(lcId != SRB0_LCID) + { + DU_LOG("\nERROR --> SCH : Invalid LC Id %d in MacSchDlRlcBoInfo", lcId); + return RFAILED; + } - slot = (cell->slotInfo.slot + SCHED_DELTA + PHY_DELTA + BO_DELTA) % SCH_NUM_SLOTS; - schDlSlotInfo = cell->schDlSlotInfo[slot]; + slot = (cell->slotInfo.slot + SCHED_DELTA + PHY_DELTA_DL + BO_DELTA) % cell->numSlots; +#ifdef NR_TDD + while(schGetSlotSymbFrmt(cell->slotFrmtBitMap, slot) != DL_SLOT) + { + slot = (slot + 1)%cell->numSlots; + slotIdx++; + if(slotIdx==cell->numSlots) + { + DU_LOG("\nERROR --> SCH : No DL Slot available"); + return RFAILED; + } + } +#endif - SCH_ALLOC(schDlSlotInfo->dlMsgInfo, sizeof(DlMsgInfo)); - if(!schDlSlotInfo->dlMsgInfo) - { - DU_LOG("\nSCH : Memory allocation failed for dlMsgInfo"); - schDlSlotInfo = NULL; - return RFAILED; - } - schDlSlotInfo->dlMsgInfo->crnti = dlBoInfo->crnti; - schDlSlotInfo->dlMsgInfo->ndi = 1; - schDlSlotInfo->dlMsgInfo->harqProcNum = 0; - schDlSlotInfo->dlMsgInfo->dlAssignIdx = 0; - schDlSlotInfo->dlMsgInfo->pucchTpc = 0; - schDlSlotInfo->dlMsgInfo->pucchResInd = 0; - schDlSlotInfo->dlMsgInfo->harqFeedbackInd = 0; - schDlSlotInfo->dlMsgInfo->dciFormatId = 1; - if(lcId == SRB0_LCID) - schDlSlotInfo->dlMsgInfo->isMsg4Pdu = true; + schDlSlotInfo = cell->schDlSlotInfo[slot]; + if(schDlSlotInfo == NULLP) + { + DU_LOG("\nERROR --> SCH : MacSchDlRlcBoInfo(): schDlSlotInfo does not exists"); + return RFAILED; + } + + SCH_ALLOC(schDlSlotInfo->dlMsgAlloc, sizeof(DlMsgAlloc)); + if(schDlSlotInfo->dlMsgAlloc == NULLP) + { + DU_LOG("\nERROR --> SCH : Memory allocation failed for dlMsgInfo"); + schDlSlotInfo = NULL; + return RFAILED; + } + schDlSlotInfo->dlMsgAlloc->dlMsgInfo = dlMsgInfo; + } return ROK; } @@ -738,7 +1052,11 @@ uint8_t MacSchBsr(Pst *pst, UlBufferStatusRptInd *bsrInd) SchUeCb *ueCb = NULLP; uint8_t lcgIdx; - DU_LOG("\nSCH : Received BSR"); +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_SHORT_BSR\n"); +#endif + + DU_LOG("\nDEBUG --> SCH : Received BSR"); cellCb = schCb[schInst].cells[schInst]; ueCb = schGetUeCb(cellCb, bsrInd->crnti); @@ -775,7 +1093,11 @@ uint8_t MacSchSrUciInd(Pst *pst, SrUciIndInfo *uciInd) SchUeCb *ueCb; SchCellCb *cellCb = schCb[inst].cells[inst]; - DU_LOG("\nSCH : Received SR"); +#ifdef CALL_FLOW_DEBUG_LOG + DU_LOG("\nCall Flow: ENTMAC -> ENTSCH : EVENT_UCI_IND_TO_SCH\n"); +#endif + + DU_LOG("\nDEBUG --> SCH : Received SR"); ueCb = schGetUeCb(cellCb, uciInd->crnti); @@ -785,6 +1107,375 @@ uint8_t MacSchSrUciInd(Pst *pst, SrUciIndInfo *uciInd) } return ROK; } + +/******************************************************************* + * + * @brief Allocates requested PRBs for DL + * + * @details + * + * Function : allocatePrbDl + * + * Functionality: + * Allocates requested PRBs in DL + * Keeps track of allocated PRB (using bitmap) and remaining PRBs + * + * @params[in] prbAlloc table + * Start symbol + * Number of symbols + * Start PRB + * Number of PRBs + * + * @return ROK - success + * RFAILED - failure + * + * ****************************************************************/ +uint8_t allocatePrbDl(SchCellCb *cell, SlotTimingInfo slotTime, \ + uint8_t startSymbol, uint8_t symbolLength, uint16_t *startPrb, uint16_t numPrb) +{ + uint8_t symbol = 0; + uint16_t broadcastPrbStart=0, broadcastPrbEnd=0; + FreePrbBlock *freePrbBlock = NULLP; + CmLList *freePrbNode = NULLP; + PduTxOccsaion ssbOccasion=0, sib1Occasion=0; + SchDlSlotInfo *schDlSlotInfo = cell->schDlSlotInfo[slotTime.slot]; + SchPrbAlloc *prbAlloc = &schDlSlotInfo->prbAlloc; + + /* If startPrb is set to MAX_NUM_RB, it means startPrb is not known currently. + * Search for an appropriate location in PRB grid and allocate requested resources */ + if(*startPrb == MAX_NUM_RB) + { + /* Check if SSB/SIB1 is also scheduled in this slot */ + ssbOccasion = schCheckSsbOcc(cell, slotTime); + sib1Occasion = schCheckSib1Occ(cell, slotTime); + + if(ssbOccasion && sib1Occasion) + { + broadcastPrbStart = cell->cellCfg.ssbSchCfg.ssbOffsetPointA; + broadcastPrbEnd = broadcastPrbStart + SCH_SSB_NUM_PRB + cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.numPrb -1; + } + else if(ssbOccasion) + { + broadcastPrbStart = cell->cellCfg.ssbSchCfg.ssbOffsetPointA; + broadcastPrbEnd = broadcastPrbStart + SCH_SSB_NUM_PRB -1; + } + else if(sib1Occasion) + { + broadcastPrbStart = cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.startPrb; + broadcastPrbEnd = broadcastPrbStart + cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.numPrb -1; + } + + /* Iterate through all free PRB blocks */ + freePrbNode = prbAlloc->freePrbBlockList.first; + while(freePrbNode) + { + freePrbBlock = (FreePrbBlock *)freePrbNode->node; + + /* If broadcast message is scheduled in this slot, then check if its PRBs belong to the current free block. + * Since SSB/SIB1 PRB location is fixed, these PRBs cannot be allocated to other message in same slot */ + if((ssbOccasion || sib1Occasion) && + ((broadcastPrbStart >= freePrbBlock->startPrb) && (broadcastPrbStart <= freePrbBlock->endPrb)) && \ + ((broadcastPrbEnd >= freePrbBlock->startPrb) && (broadcastPrbEnd <= freePrbBlock->endPrb))) + { + /* Implmentation is done such that highest-numbered free-RB is allocated first */ + if((freePrbBlock->endPrb > broadcastPrbEnd) && ((freePrbBlock->endPrb - broadcastPrbEnd) >= numPrb)) + { + /* If sufficient free PRBs are available above bradcast message then, + * endPrb = freePrbBlock->endPrb + * startPrb = endPrb - numPrb +1; + */ + *startPrb = freePrbBlock->endPrb - numPrb +1; + break; + } + else if((broadcastPrbStart > freePrbBlock->startPrb) && ((broadcastPrbStart - freePrbBlock->startPrb) >= numPrb)) + { + /* If free PRBs are available below broadcast message then, + * endPrb = broadcastPrbStart - 1 + * startPrb = endPrb - numPrb +1 + */ + *startPrb = broadcastPrbStart - numPrb; + break; + } + else + { + freePrbNode = freePrbNode->next; + continue; + } + } + else + { + /* Check if requested number of blocks can be allocated from the current block */ + if (freePrbBlock->numFreePrb < numPrb) + { + freePrbNode = freePrbNode->next; + continue; + } + *startPrb = freePrbBlock->endPrb - numPrb +1; + break; + } + } + + /* If no free block can be used to allocated request number of RBs */ + if(*startPrb == MAX_NUM_RB) + return RFAILED; + } + + /* If startPrb is known already, check if requested PRBs are available for allocation */ + else + { + freePrbNode = isPrbAvailable(&prbAlloc->freePrbBlockList, *startPrb, numPrb); + if(!freePrbNode) + { + DU_LOG("\nERROR --> SCH: Requested DL PRB unavailable"); + return RFAILED; + } + } + + /* Update bitmap to allocate PRBs */ + for(symbol=startSymbol; symbol < (startSymbol+symbolLength); symbol++) + { + if(fillPrbBitmap(prbAlloc->prbBitMap[symbol], *startPrb, numPrb) != ROK) + { + DU_LOG("\nERROR --> SCH: fillPrbBitmap() failed for symbol [%d] in DL", symbol); + return RFAILED; + } + } + + /* Update the remaining number for free PRBs */ + removeAllocatedPrbFromFreePrbList(&prbAlloc->freePrbBlockList, freePrbNode, *startPrb, numPrb); + + return ROK; +} + +/******************************************************************* + * + * @brief Allocates requested PRBs for UL + * + * @details + * + * Function : allocatePrbUl + * + * Functionality: + * Allocates requested PRBs in UL + * Keeps track of allocated PRB (using bitmap) and remaining PRBs + * + * @params[in] prbAlloc table + * Start symbol + * Number of symbols + * Start PRB + * Number of PRBs + * + * @return ROK - success + * RFAILED - failure + * + * ****************************************************************/ +uint8_t allocatePrbUl(SchCellCb *cell, SlotTimingInfo slotTime, \ + uint8_t startSymbol, uint8_t symbolLength, uint16_t *startPrb, uint16_t numPrb) +{ + uint8_t symbol = 0; + uint16_t prachStartPrb, prachNumPrb, prachEndPrb; + bool isPrachOccasion; + FreePrbBlock *freePrbBlock = NULLP; + CmLList *freePrbNode = NULLP; + SchPrbAlloc *prbAlloc = &cell->schUlSlotInfo[slotTime.slot]->prbAlloc; + + /* If startPrb is set to MAX_NUM_RB, it means startPrb is not known currently. + * Search for an appropriate location in PRB grid and allocate requested resources */ + if(*startPrb == MAX_NUM_RB) + { + /* Check if PRACH is also scheduled in this slot */ + isPrachOccasion = schCheckPrachOcc(cell, slotTime); + if(isPrachOccasion) + { + prachStartPrb = cell->cellCfg.schRachCfg.msg1FreqStart; + prachNumPrb = schCalcPrachNumRb(cell); + prachEndPrb = prachStartPrb + prachNumPrb -1; + } + + /* Iterate through all free PRB blocks */ + freePrbNode = prbAlloc->freePrbBlockList.first; + while(freePrbNode) + { + freePrbBlock = (FreePrbBlock *)freePrbNode->node; + + /* If PRACH is scheduled in this slot, then check if its PRBs belong to the current free block. + * PRBs required for PRACH cannot be allocated to any other message */ + if((isPrachOccasion) && + ((prachStartPrb >= freePrbBlock->startPrb) && (prachStartPrb <= freePrbBlock->endPrb)) && + ((prachEndPrb >= freePrbBlock->startPrb) && (prachEndPrb <= freePrbBlock->endPrb))) + { + /* Implmentation is done such that highest-numbered free-RB is allocated first */ + if((freePrbBlock->endPrb > prachEndPrb) && ((freePrbBlock->endPrb - prachEndPrb) >= numPrb)) + { + /* If sufficient free PRBs are available above PRACH message then, + * endPrb = freePrbBlock->endPrb + * startPrb = endPrb - numPrb +1; + */ + *startPrb = freePrbBlock->endPrb - numPrb +1; + break; + } + else if((prachStartPrb > freePrbBlock->startPrb) && ((prachStartPrb - freePrbBlock->startPrb) >= numPrb)) + { + /* If free PRBs are available below PRACH message then, + * endPrb = prachStartPrb - 1 + * startPrb = endPrb - numPrb +1 + */ + *startPrb = prachStartPrb - numPrb; + break; + } + else + { + freePrbNode = freePrbNode->next; + continue; + } + } + else + { + /* Check if requested number of PRBs can be allocated from currect block */ + if(freePrbBlock->numFreePrb < numPrb) + { + freePrbNode = freePrbNode->next; + continue; + } + *startPrb = freePrbBlock->endPrb - numPrb +1; + break; + } + } + + /* If no free block can be used to allocated requested number of RBs */ + if(*startPrb == MAX_NUM_RB) + return RFAILED; + } + else + { + /* If startPrb is known already, check if requested PRBs are available for allocation */ + freePrbNode = isPrbAvailable(&prbAlloc->freePrbBlockList, *startPrb, numPrb); + if(!freePrbNode) + { + DU_LOG("\nERROR --> SCH: Requested UL PRB unavailable"); + return RFAILED; + } + } + + /* Update bitmap to allocate PRBs */ + for(symbol=startSymbol; symbol < (startSymbol+symbolLength); symbol++) + { + if(fillPrbBitmap(prbAlloc->prbBitMap[symbol], *startPrb, numPrb) != ROK) + { + DU_LOG("\nERROR --> SCH: fillPrbBitmap() failed for symbol [%d] in UL", symbol); + return RFAILED; + } + } + + /* Update the remaining number for free PRBs */ + removeAllocatedPrbFromFreePrbList(&prbAlloc->freePrbBlockList, freePrbNode, *startPrb, numPrb); + + return ROK; +} + +/******************************************************************************* + * + * @brief Try to find Best Free Block with Max Num PRB + * + * @details + * + * Function : searchLargestFreeBlockDL + * + * Functionality: + * Finds the FreeBlock with MaxNum of FREE PRB considering SSB/SIB1 ocassions. + * + * @params[in] I/P > prbAlloc table (FreeBlock list) + * I/P > Slot timing Info + * O/P > Start PRB + * + * + * @return Max Number of Free PRB + * If 0, then no Suitable Free Block + * + * ********************************************************************************/ + +uint16_t searchLargestFreeBlockDL(SchCellCb *cell, SlotTimingInfo slotTime,uint16_t *startPrb) +{ + uint16_t broadcastPrbStart=0, broadcastPrbEnd=0, maxFreePRB = 0; + PduTxOccsaion ssbOccasion=0, sib1Occasion=0; + FreePrbBlock *freePrbBlock = NULLP; + CmLList *freePrbNode = NULLP; + + SchDlSlotInfo *schDlSlotInfo = cell->schDlSlotInfo[slotTime.slot]; + SchPrbAlloc *prbAlloc = &schDlSlotInfo->prbAlloc; + + ssbOccasion = schCheckSsbOcc(cell, slotTime); + sib1Occasion = schCheckSib1Occ(cell, slotTime); + + if(ssbOccasion && sib1Occasion) + { + broadcastPrbStart = cell->cellCfg.ssbSchCfg.ssbOffsetPointA; + broadcastPrbEnd = broadcastPrbStart + SCH_SSB_NUM_PRB + cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.numPrb -1; + } + else if(ssbOccasion) + { + broadcastPrbStart = cell->cellCfg.ssbSchCfg.ssbOffsetPointA; + broadcastPrbEnd = broadcastPrbStart + SCH_SSB_NUM_PRB -1; + } + else if(sib1Occasion) + { + broadcastPrbStart = cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.startPrb; + broadcastPrbEnd = broadcastPrbStart + cell->cellCfg.sib1SchCfg.sib1PdschCfg.pdschFreqAlloc.freqAlloc.numPrb -1; + } + + + freePrbNode = prbAlloc->freePrbBlockList.first; + *startPrb = 0; /*Initialize the StartPRB to zero*/ + while(freePrbNode) + { + freePrbBlock = (FreePrbBlock *)freePrbNode->node; + + /*For block with same numFreeBlocks, choose the one with HighestPRB range + *Since FreeBLockList are arranged in Descending order of PRB range thus Skipping this block*/ + if(maxFreePRB >= freePrbBlock->numFreePrb) + { + //skip this block + freePrbNode = freePrbNode->next; + continue; + } + + /* If broadcast message is scheduled in this slot, then check if its PRBs belong to the current free block. + * Since SSB/SIB1 PRB location is fixed, these PRBs cannot be allocated to other message in same slot */ + if((ssbOccasion || sib1Occasion) && + ((broadcastPrbStart >= freePrbBlock->startPrb) && (broadcastPrbStart <= freePrbBlock->endPrb)) && \ + ((broadcastPrbEnd >= freePrbBlock->startPrb) && (broadcastPrbEnd <= freePrbBlock->endPrb))) + { + + /* Implmentation is done such that highest-numbered free-RB is Checked first + and freePRB in this block is greater than Max till now */ + if((freePrbBlock->endPrb > broadcastPrbEnd) && ((freePrbBlock->endPrb - broadcastPrbEnd) > maxFreePRB)) + { + /* If sufficient free PRBs are available above broadcast message*/ + *startPrb = broadcastPrbEnd + 1; + maxFreePRB = (freePrbBlock->endPrb - broadcastPrbEnd); + } + /*Also check the other freeBlock (i.e. Above the broadcast message) for MAX FREE PRB*/ + if((broadcastPrbStart > freePrbBlock->startPrb) && ((broadcastPrbStart - freePrbBlock->startPrb) > maxFreePRB)) + { + /* If free PRBs are available below broadcast message*/ + *startPrb = freePrbBlock->startPrb; + maxFreePRB = (broadcastPrbStart - freePrbBlock->startPrb); + } + } + else //Best Block + { + if(maxFreePRB < freePrbBlock->numFreePrb) + { + *startPrb = freePrbBlock->startPrb; + maxFreePRB = freePrbBlock->numFreePrb; + } + + } + freePrbNode = freePrbNode->next; + } + return(maxFreePRB); +} + /********************************************************************** End of file **********************************************************************/