*
* 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)
{
}
/* return the TBsize in bytes */
- return (tbSizeTable[tbsIndex]);
+ return (tbSizeTable[tbsIndex]/8);
}
/**
*
* 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
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 *
numPrb = ceil((float)nre / nreDash);
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
*
{
memset(&schDlSlotInfo->ssbInfo[itr], 0, sizeof(SsbInfo));
}
-
-
}
+
/**********************************************************************
End of file
**********************************************************************/