#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 */
{ 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 */
{ 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.
*
*
* 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;
+
+ maxTbSize = tbSizeTable[TOTAL_TBSIZE_VALUES -1]/8;
+ if(payLoadSize >= maxTbSize)
+ return maxTbSize;
- while(payLoadSize > tbSizeTable[tbsIndex])
- {
- tbsIndex++;
- }
+ payLoadSize = payLoadSize*8;
+ while(payLoadSize > tbSizeTable[tbsIndex])
+ {
+ tbsIndex++;
+ }
- /* return the TBsize in bytes */
- return (tbSizeTable[tbsIndex]/8);
+ /* return the TBsize in bytes */
+ 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 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 *
+ /* 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) - 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)
+{
+ uint8_t qm = mcsTable[mcs][1];
+ uint16_t rValue = mcsTable[mcs][2];
+ uint16_t tbsIndex = 0;
+ uint32_t tbSize = 0;
+ uint32_t nre = 0;
+ uint32_t nreDash = 0;
+ uint32_t nInfo = 0;
+ uint32_t n = 0;
+ uint32_t nInfoDash = 0;
+ uint32_t c = 0;
+ const uint8_t numLayer = 1;
+ const uint16_t numRbSc = 12;
+ const uint16_t numDmrsRes = 12;
+ const uint16_t sf = 1;
+// uint16_t numPrbOvrHead = 0;
+
+ /* formula used for calculation of rbSize, 38.214 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 = MIN(156, ceil( (numRbSc * numSymbols) - numDmrsRes - 0));
+ nre = nreDash * numPrb;
+ nInfo = ceil(nre * qm * numLayer * rValue/(1024.0 * sf));
+
+ if(nInfo <= 3824)
+ {
+ n = MAX(3, (uint32_t)cmLog2(nInfo) - 6);
+ nInfoDash = MAX(24, (1<<n)*(nInfo/(1<<n)));
+ while(nInfoDash > tbSizeTable[tbsIndex])
+ {
+ tbsIndex++;
+ }
+ tbSize = tbSizeTable[tbsIndex];
+ }
+ else
+ {
+ n = (uint32_t)cmLog2(nInfo - 24) - 5;
+ nInfoDash = MAX(3840, (1<<n)*ceil((nInfo - 24)/(1<<n)));
+
+ if(rValue<256)
+ {
+ c = ceil((nInfoDash + 24)/3816);
+ tbSize = 8 * c * ceil((nInfoDash + 24)/(8 * c)) - 24;
+ }
+ else
+ {
+ if(nInfoDash > 8424)
+ {
+ c = ceil((nInfoDash + 24)/8424);
+ tbSize = 8 * c * ceil((nInfoDash + 24)/(8 * c)) - 24;
+ }
+ else
+ {
+ tbSize = 8 * ceil((nInfoDash + 24)/(8)) - 24;
+ }
+ }
+ }
+ 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; itr<SCH_SYMBOL_PER_SLOT; itr++)
+ {
+ schUlSlotInfo->assignedPrb[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; itr<SCH_SYMBOL_PER_SLOT; itr++)
+ {
+ schDlSlotInfo->assignedPrb[itr] = 0;
+ }
+ schDlSlotInfo->resAllocBitMap = 0;
+ for(uint8_t itr=0; itr<MAX_SSB_IDX; itr++)
+ {
+ memset(&schDlSlotInfo->ssbInfo[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
**********************************************************************/
Code Review / o-du / l2.git / blobdiff