X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch_utils.c;h=9ecb73395733753a027db274b117f7a3ad12c425;hb=refs%2Fchanges%2F77%2F5377%2F4;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..9ecb73395 100644 --- a/src/5gnrsch/sch_utils.c +++ b/src/5gnrsch/sch_utils.c @@ -458,63 +458,6 @@ 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 +467,21 @@ 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) { uint8_t tbsIndex = 0; - payLoadSize = payLoadSize*8; + payLoadSize = payLoadSize*8; - while(payLoadSize > tbSizeTable[tbsIndex]) - { - tbsIndex++; - } + while(payLoadSize > tbSizeTable[tbsIndex]) + { + tbsIndex++; + } - /* return the TBsize in bytes */ - return (tbSizeTable[tbsIndex]/8); + /* return the TBsize in bytes */ + return (tbSizeTable[tbsIndex]/8); } /** @@ -550,7 +493,7 @@ 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 @@ -559,25 +502,145 @@ 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 */ + + tbSize = tbSize * 8; //Calculate tbSize in bits /* formula used for calculation of rbSize, 38.213 section 5.1.3.2 * * Ninfo = 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) - NUM_DMRS_SYMBOLS - 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->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; + } + + for(uint8_t itr=0; itrssbInfo[itr], 0, sizeof(SsbInfo)); + } } /**********************************************************************