/* header files */
#include "sch_utils.h"
+#include "math.h"
/* spec-38.213 Table 13-1 */
int8_t coresetIdxTable[MAX_CORESET_INDEX][4] = {
{10, 1, 0, 682, 0, 2, 2, 6 } /* index 255 */
};
+/* 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 */
/**
* @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;
}
}
+/**
+ * @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
**********************************************************************/