X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=src%2F5gnrsch%2Fsch_utils.c;h=8a5f298db5ca64f1b63fb59cd358679549d43d95;hb=1931d49496d91723b7c54c63db50ff4ee8ff03b6;hp=a2f0d5e04993d59fc9412d39ae8fe4418eb85948;hpb=f56e7aa2f07c03f3b30eda22a2260d038e0214e9;p=o-du%2Fl2.git diff --git a/src/5gnrsch/sch_utils.c b/src/5gnrsch/sch_utils.c index a2f0d5e04..8a5f298db 100644 --- a/src/5gnrsch/sch_utils.c +++ b/src/5gnrsch/sch_utils.c @@ -34,6 +34,7 @@ /* header files */ #include "sch_utils.h" +#include "math.h" /* spec-38.213 Table 13-1 */ int8_t coresetIdxTable[MAX_CORESET_INDEX][4] = { @@ -382,26 +383,93 @@ uint16_t prachCfgIdxTable[MAX_PRACH_CONFIG_IDX][8] = { /* Defintion of delta value Table 6.1.2.1.1-5 spec 38.214 */ uint8_t puschDeltaTable[MAX_MU_PUSCH] = { 2, 3, 4, 6 }; +uint16_t tbSizeTable[TOTAL_TBSIZE_VALUES] = { + 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, \ + 104, 112, 120, 128, 136, 144, 152, 160, 168, 176, \ + 184, 192, 208, 224, 240, 256, 272, 288, 304, 320, \ + 336, 352, 368, 384, 408, 432, 456, 480, 504, 528, \ + 552, 576, 608, 640, 672, 704, 736, 768, 808, 848, \ + 888, 928, 984, 1032, 1064, 1128, 1160, 1192, 1224, 1256, \ + 1288, 1320, 1352, 1416, 1480, 1544, 1608, 1672, 1736, 1800, \ + 1864, 1928, 2024, 2088, 2152, 2216, 2280, 2408, 2472, 2536, \ + 2600, 2664, 2728, 2792, 2856, 2976, 3104, 3240, 3368, 3496, \ + 3624, 3752, 3824 }; + +uint16_t mcsTable[32][3] = { + { 0, 2, 120}, /* mcs index 0 */ + { 1, 2, 157}, /* mcs index 1 */ + { 2, 2, 193}, /* mcs index 2 */ + { 3, 2, 251}, /* mcs index 3 */ + { 4, 2, 308}, /* mcs index 4 */ + { 5, 2, 379}, /* mcs index 5 */ + { 6, 2, 449}, /* mcs index 6 */ + { 7, 2, 526}, /* mcs index 7 */ + { 8, 2, 602}, /* mcs index 8 */ + { 9, 2, 679}, /* mcs index 9 */ + { 10, 4, 340}, /* mcs index 10 */ + { 11, 4, 378}, /* mcs index 11 */ + { 12, 4, 434}, /* mcs index 12 */ + { 13, 4, 490}, /* mcs index 13 */ + { 14, 4, 553}, /* mcs index 14 */ + { 15, 4, 616}, /* mcs index 15 */ + { 16, 4, 658}, /* mcs index 16 */ + { 17, 6, 438}, /* mcs index 17 */ + { 18, 6, 466}, /* mcs index 18 */ + { 19, 6, 517}, /* mcs index 19 */ + { 20, 6, 567}, /* mcs index 20 */ + { 21, 6, 616}, /* mcs index 21 */ + { 22, 6, 666}, /* mcs index 22 */ + { 23, 6, 719}, /* mcs index 23 */ + { 24, 6, 772}, /* mcs index 24 */ + { 25, 6, 822}, /* mcs index 25 */ + { 26, 6, 873}, /* mcs index 26 */ + { 27, 6, 910}, /* mcs index 27 */ + { 28, 6, 948}, /* mcs index 28 */ + { 29, 2, 0}, /* mcs index 29 */ + { 30, 4, 0}, /* mcs index 30 */ + { 31, 6, 0}}; /* mcs index 31 */ + +/* PUCCH resource sets before dedicated PUCCH resource configuration */ +/* Table 9.2.1-1 spec 38.213 */ +uint8_t pucchResourceSet[MAX_PUCCH_RES_SET_IDX][4] = { +{ 0, 12, 2, 0 }, /* index 0 */ +{ 0, 12, 2, 0 }, /* index 1 */ +{ 0, 12, 2, 3 }, /* index 2 */ +{ 1, 10, 4, 0 }, /* index 3 */ +{ 1, 10, 4, 0 }, /* index 4 */ +{ 1, 10, 4, 2 }, /* index 5 */ +{ 1, 10, 4, 4 }, /* index 6 */ +{ 1, 4, 10, 0 }, /* index 7 */ +{ 1, 4, 10, 0 }, /* index 8 */ +{ 1, 4, 10, 2 }, /* index 9 */ +{ 1, 4, 10, 4 }, /* index 10 */ +{ 1, 0, 14, 0 }, /* index 11 */ +{ 1, 0, 14, 0 }, /* index 12 */ +{ 1, 0, 14, 2 }, /* index 13 */ +{ 1, 0, 14, 4 }, /* index 14 */ +{ 1, 0, 14, 0 }, /* index 15 */ +}; + /** * @brief frequency domain allocation function. * * @details * - * Function : freqDomResourceAlloc + * Function: schAllocFreqDomRscType0 * - * This function does allocation in frequency domain resource. using - * bitwise operator, the bits are set for the PRBs. + * 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 freqDomResourceAlloc(uint16_t startPrb, uint16_t prbSize, uint8_t *freqDomain) +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 = 0; + uint8_t numBits,startBit,byteCount = 5; while(remBits) { @@ -409,7 +477,7 @@ void freqDomResourceAlloc(uint16_t startPrb, uint16_t prbSize, uint8_t *freqDoma if(startPrb/8) { startPrb -= 8; - byteCount++; + byteCount--; continue; } @@ -430,15 +498,81 @@ void freqDomResourceAlloc(uint16_t startPrb, uint16_t prbSize, uint8_t *freqDoma numBits = 8 - startBit; /* bit operation to set the bits */ - SET_BITS((startBit % 8),numBits,freqDomain[byteCount]) + 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++; + byteCount--; } } +/** + * @brief frequency domain allocation function. + * + * @details + * + * Function: schCalcTbSize + * + * 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 + **/ +uint16_t schCalcTbSize(uint16_t payLoadSize) +{ + uint8_t tbsIndex = 0; + payLoadSize = payLoadSize*8; + + while(payLoadSize > tbSizeTable[tbsIndex]) + { + tbsIndex++; + } + + /* return the TBsize in bytes */ + return (tbSizeTable[tbsIndex]/8); +} + +/** + * @brief frequency domain allocation function. + * + * @details + * + * Function: schCalcNumPrb + * + * This function calculates the number of PRbs + * + * @param[in] tbSize + * @param[in] mcs + * @param[in] number of symbols + * @return number PRBs + **/ +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 */ + uint8_t numDmrsSymbols = 12; /* considering whole of one symbols with 12 SCs for DMRS */ + + /* 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)); + + nreDash = ceil( (12 * numSymbols) - numDmrsSymbols - 0); + + if (nreDash > 156) + nre = 156; + + numPrb = ceil((float)nre / nreDash); + return numPrb; +} + /********************************************************************** End of file **********************************************************************/