X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch_utils.c;h=9c14e901095fe9a287b3b7589c721af054b81150;hb=fec9ccb05a6f0d91127bc51eef34efbba795ec02;hp=344e84ebaf40e576b8838c2cac2c8ab062c4c6a0;hpb=2f1185bec78aa31b72781e5af34eb9cf64e5858d;p=o-du%2Fl2.git diff --git a/src/5gnrsch/sch_utils.c b/src/5gnrsch/sch_utils.c index 344e84eba..9c14e9010 100644 --- a/src/5gnrsch/sch_utils.c +++ b/src/5gnrsch/sch_utils.c @@ -44,7 +44,30 @@ #include "sch_utils.h" #include "math.h" -/* spec-38.213 Table 13-1 */ +#ifdef NR_TDD +/* spec-38.213 Table 13-4 for SCS=30KHz */ +/* Note: Picking Table 13-4 and not 13-6 since band supported is n78 and + * corresponding minimum B/W is 10 MHz */ +int8_t coresetIdxTable[MAX_CORESET_INDEX][4] = { +{ 1, 24, 2, 0}, /* index 0 */ +{ 1, 24, 2, 1}, /* index 1 */ +{ 1, 24, 2, 2}, /* index 2 */ +{ 1, 24, 2, 3}, /* index 3 */ +{ 1, 24, 2, 4}, /* index 4 */ +{ 1, 24, 3, 0}, /* index 5 */ +{ 1, 24, 3, 1}, /* index 6 */ +{ 1, 24, 3, 2}, /* index 7 */ +{ 1, 24, 3, 3}, /* index 8 */ +{ 1, 24, 3, 4}, /* index 9 */ +{ 1, 48, 1, 12}, /* index 10 */ +{ 1, 48, 1, 14}, /* index 11 */ +{ 1, 48, 1, 16}, /* index 12 */ +{ 1, 48, 2, 12}, /* index 13 */ +{ 1, 48, 2, 14}, /* index 14 */ +{ 1, 48, 2, 16}, /* index 15 */ +}; +#else +/* spec-38.213 Table 13-1 for SCS=15KHz */ int8_t coresetIdxTable[MAX_CORESET_INDEX][4] = { { 1, 24, 2, 0}, /* index 0 */ { 1, 24, 2, 2}, /* index 1 */ @@ -63,6 +86,7 @@ int8_t coresetIdxTable[MAX_CORESET_INDEX][4] = { { 1, 96, 3, 38}, /* index 14 */ { 0, 0, 0, 0}, /* index 15 */ }; +#endif /* spec-38.213 Table 13-11 */ /* m value is scaled to 2, when using it in formula, divide by 2 */ @@ -458,63 +482,6 @@ uint8_t pucchResourceSet[MAX_PUCCH_RES_SET_IDX][4] = { { 1, 0, 14, 0 }, /* index 15 */ }; -/** - * @brief frequency domain allocation function. - * - * @details - * - * Function: schAllocFreqDomRscType0 - * - * This function does allocation in frequency domain resource. - * This is a bitmap defining non-overlapping groups of 6 PRBs in ascending order. - * - * @param[in] startPrb - start PRB from where the freq alloc starts. - * @param[in] prbSize - number of PRBs to be allocted. - * @param[in] freqDomain - 6 bytes of info, each bit represents a group of 6 PRB. - * @return void - **/ -void schAllocFreqDomRscType0(uint16_t startPrb, uint16_t prbSize, uint8_t *freqDomain) -{ - uint8_t remBits = prbSize; /* each bit represents 6 PRBs */ - uint8_t firstByte = 1; - uint8_t numBits,startBit,byteCount = 5; - - while(remBits) - { - /* when the startPrb is not in this byteCount */ - if(startPrb/8) - { - startPrb -= 8; - byteCount--; - continue; - } - - /* max bytecount is 6 nearly equal to 45 bits*/ - if(byteCount >= 6) - break; - - /* when we are filling the second byte, then the start should be equal to 0 */ - if(firstByte) - startBit = startPrb; - else - startBit = 0; - - /* calculate the number of bits to be set in this byte */ - if((remBits+startPrb) <= 8) - numBits = remBits; - else - numBits = 8 - startBit; - - /* bit operation to set the bits */ - SET_BITS_MSB((startBit % 8),numBits,freqDomain[byteCount]) - firstByte = 0; - - /* the ramaining bits should be subtracted with the numBits set in this byte */ - remBits -= numBits; - byteCount--; - } -} - /** * @brief frequency domain allocation function. * @@ -524,21 +491,26 @@ void schAllocFreqDomRscType0(uint16_t startPrb, uint16_t prbSize, uint8_t *freqD * * This function finds the TBSize from table Table 5.1.3.2-1 spec 38.214 * - * @param[in] payLoadSize - size of payload - * @return TBsize from the Table + * @param[in] payLoadSize - size of payload in bytes + * @return TBsize from the Table in bytes **/ -uint16_t schCalcTbSize(uint16_t payLoadSize) +uint16_t schCalcTbSize(uint32_t payLoadSize) { uint8_t tbsIndex = 0; - payLoadSize = payLoadSize*8; + uint16_t maxTbSize; - while(payLoadSize > tbSizeTable[tbsIndex]) - { - tbsIndex++; - } + maxTbSize = tbSizeTable[TOTAL_TBSIZE_VALUES -1]/8; + if(payLoadSize >= maxTbSize) + return maxTbSize; - /* return the TBsize in bytes */ - return (tbSizeTable[tbsIndex]/8); + payLoadSize = payLoadSize*8; + while(payLoadSize > tbSizeTable[tbsIndex]) + { + tbsIndex++; + } + + /* return the TBsize in bytes */ + return (tbSizeTable[tbsIndex]/8); } /** @@ -550,7 +522,7 @@ uint16_t schCalcTbSize(uint16_t payLoadSize) * * This function calculates the number of PRbs * - * @param[in] tbSize + * @param[in] tbSize in bytes * @param[in] mcs * @param[in] number of symbols * @return number PRBs @@ -559,27 +531,191 @@ uint16_t schCalcNumPrb(uint16_t tbSize, uint16_t mcs, uint8_t numSymbols) { uint16_t numPrb = 0; uint16_t nre = 0; - uint16_t nreDash = 0; - uint8_t qm = mcsTable[mcs][1]; - uint16_t rValue = mcsTable[mcs][2]; - uint8_t numLayer = 1; /* v value */ + uint16_t nreDash = 0; + uint8_t qm = mcsTable[mcs][1]; + uint16_t rValue = mcsTable[mcs][2]; + uint8_t numLayer = 1; /* v value */ + uint8_t numDmrsRePerPrb = 12; - /* formula used for calculation of rbSize, 38.213 section 5.1.3.2 * - * Ninfo = Nre . R . Qm . v * + tbSize = tbSize * 8; //Calculate tbSize in bits + + /* formula used for calculation of rbSize, 38.214 section 5.1.3.2 * + * Ninfo = S . Nre . R . Qm . v * * Nre' = Nsc . NsymPdsch - NdmrsSymb - Noh * * Nre = min(156,Nre') . nPrb */ - nre = ceil( (float)tbSize * 1024 / (qm * rValue * numLayer)); + nre = ceil( (float)tbSize * 1024 / (qm * rValue * numLayer)); - nreDash = ceil( (12 * numSymbols) - NUM_DMRS_SYMBOLS - 0); + nreDash = ceil( (12 * numSymbols) - numDmrsRePerPrb - 0); - if (nreDash > 156) - nre = 156; + if (nreDash > 156) + nre = 156; numPrb = ceil((float)nre / nreDash); - return numPrb; + return numPrb; +} +/** +* @brief calculation of transport block size. +* +* @details +* +* Function: schCalcTbSizeFromNPrb +* +* This function calculates the transport block size +* +* @param[in] nPrb is num PRB +* @param[in] mcs +* @param[in] number of symbols +* @return tbSize +**/ +uint16_t schCalcTbSizeFromNPrb(uint16_t numPrb, uint16_t mcs, uint8_t numSymbols) +{ + uint16_t tbSize = 0; + uint16_t tbsIndex = 0; + uint16_t nre = 0; + uint16_t nreDash = 0; + uint8_t qm = mcsTable[mcs][1]; + uint16_t rValue = mcsTable[mcs][2]; + uint8_t numLayer = 1; /* v value */ + + /* formula used for calculation of rbSize, 38.213 section 5.1.3.2 * + * Ninfo = Nre . R . Qm . v where [ NInfo is tbSize] * + * Nre' = Nsc . NsymPdsch - NdmrsSymb - Noh * + * Nre = min(156,Nre') . nPrb */ + + nreDash = ceil( (12 * numSymbols) - NUM_DMRS_SYMBOLS - 0); + + if(nreDash > 156) + nreDash = 156; + + nre = nreDash * numPrb; + tbSize = ceil(nre * qm * numLayer * rValue/1024.0); + tbSize = ceil(tbSize/8.0); + + while(tbSize > tbSizeTable[tbsIndex]) + { + tbsIndex++; + } + tbSize = tbSizeTable[tbsIndex]; + + return tbSize; + +} +/** + * @brief fetching ueCb from cellCb + * + * @details + * + * Function: schGetUeCb + * + * This function fetched UeCb based on crnti from cellCb + * + * @param[in] cellCb + * @param[in] crnti + * @return ueCb + **/ +SchUeCb* schGetUeCb(SchCellCb *cellCb, uint16_t crnti) +{ + uint16_t ueIdx; + GET_UE_IDX(crnti, ueIdx); + return &(cellCb->ueCb[ueIdx -1]); +} + +/** + * @brief initialize UL slot info + * + * @details + * + * Function: schInitUlSlot + * + * This function intializes UL slot of the cell + * + * @param[in] schUlSlotInfo + * @return void + **/ +void schInitUlSlot(SchUlSlotInfo *schUlSlotInfo) +{ + memset(schUlSlotInfo, 0, sizeof(SchUlSlotInfo)); + schUlSlotInfo->totalPrb = MAX_NUM_RB; + for(uint8_t itr=0; itrassignedPrb[itr] = 0; + } + schUlSlotInfo->resAllocBitMap = 0; + schUlSlotInfo->puschCurrentPrb = PUSCH_START_RB; + schUlSlotInfo->schPuschInfo = NULLP; + +} + +/** + * @brief initialize DL slot info + * + * @details + * + * Function: schInitDlSlot + * + * This function intializes DL slot of the cell + * + * @param[in] schDlSlotInfo + * @return void + **/ +void schInitDlSlot(SchDlSlotInfo *schDlSlotInfo) +{ + memset(schDlSlotInfo, 0, sizeof(SchDlSlotInfo)); + schDlSlotInfo->totalPrb = MAX_NUM_RB; + for(uint8_t itr=0; itrassignedPrb[itr] = 0; + } + schDlSlotInfo->resAllocBitMap = 0; + for(uint8_t itr=0; itrssbInfo[itr], 0, sizeof(SsbInfo)); + } +#if 0 + //make allocation for SSB + if(cell->firstSsbTransmitted) + { + //TODO check if this slot and sfn are for ssb + + } +#endif +} + +#ifdef NR_TDD + +/** + * @brief determines slot format + * + * @details + * + * Function : schGetSlotSymbFrmt + * + * This API is invoked to determine if current slot is DL or UL + * + * @param[in] uint16_t slot + * @param[in] uint32_t bitMap from cellCb + * @return SlotConfig + * -# DL - 0 + * -# UL - 1 + * -# FLEXI - 2 + **/ +SlotConfig schGetSlotSymbFrmt(uint16_t slot, uint32_t bitMap) +{ + SlotConfig slotFrmt; + int mask1 = 0, mask2 = 0; + + slot = (slot%10)*2; + mask1 = 1<<(slot); + mask2 = 1<<(slot+1); + slotFrmt = ((mask1 & bitMap)>>slot) + (2*((mask2 & bitMap)>>(slot+1))); + + //printf("\n\n\n\n*****FormatType:%d Slot:%d****\n\n\n\n", slotFrmt, slot/2); + + return slotFrmt; } +#endif /********************************************************************** End of file **********************************************************************/