+ for(freqIdx = 0; freqIdx < FREQ_DOM_RSRC_SIZE; freqIdx++)
+ {
+ if(freqDomainRsrc[freqIdx] & 0xFF)
+ {
+ /*Tracking from the 7th Bit because in FreqDomRsrc , lowestPRB is
+ * stored in MSB and so on*/
+ idx = 128;
+ bitPos = 0;
+ while(idx)
+ {
+ if(freqDomainRsrc[freqIdx] & idx)
+ {
+ if(count == rbgIndex)
+ {
+ startPrb = (totalPrbPerFreqIdx * freqIdx) + (bitPos * NUM_PRBS_PER_RBG);
+ return startPrb;
+ }
+ count++;
+ }
+ bitPos++;
+ idx = idx >> 1;
+ }
+ }
+ }
+ return startPrb;
+}
+/**
+ * @brief Function to count number of RBG from Coreset's FreqDomainResource
+ *
+ * @details
+ *
+ * Function: countRBGFrmCoresetFreqRsrc
+ *
+ * This function counts RBG for calculating the coresetSize using CORESET.freqDomainResource
+ * In this, we will find the number of RBG groups which are allowed for this
+ * coreset
+ *
+ * @param[in] uint8_t freqDomainRsrc[6] (As per Spec 38.331, ControlResourceSet.frequencyDomainResources)
+ * freqDomainRsrc[0] =RBG0 to RBG7
+ * freqDomainRsrc[1] =RBG8 to RBG15
+ * ...
+ * freqDomainRsrc[5] =RBG40 to RBG47
+ * (Every RBG has 6 PRBs)
+ * @return Success : Total Number of RGBs in CORESET which can be allocated
+ * Failure : 0
+**/
+uint8_t countRBGFrmCoresetFreqRsrc(uint8_t *freqDomainRsrc)
+{
+ uint8_t freqIdx = 0, idx = 0;
+ uint8_t count = 0;
+
+ for(freqIdx = 0; freqIdx < FREQ_DOM_RSRC_SIZE; freqIdx++)
+ {
+ if(freqDomainRsrc[freqIdx] & 0xFF)
+ {
+ idx = 1;
+ while(idx)
+ {
+ if(freqDomainRsrc[freqIdx] & idx)
+ {
+ count++;
+ }
+ idx = idx << 1;
+ }
+ }
+ }
+ return count;
+}
+
+/*
+ * @brief Function to calculate the DciSize in bits for format 1_0
+ *
+ * @details
+ *
+ * Function: calcUeDciSizeFormat1_0
+ * Calculates the totalBit Size for sending this DCI format 1_0
+ * Spec Reference: 38.212, Format 1_0 scrambled using C_RNTI
+ *
+ * @Params[in] : CoresetSize (for calculating Frequency domain
+ * resource assignment)
+ **/
+
+uint16_t calcUeDciSizeFormat1_0(uint16_t coresetSize)
+{
+ uint16_t dciSizeInBits = 0;
+
+ /* Size(in bits) of each field in DCI format 1_0 */
+ /*Below fields are identified from 3gpp spec 38.212, 38.213, 38.214*/
+ uint8_t dciFormatIdSize = 1;
+ uint8_t freqDomResAssignSize = 0;
+ uint8_t timeDomResAssignSize = 4;
+ uint8_t VRB2PRBMapSize = 1;
+ uint8_t modNCodSchemeSize = 5;
+ uint8_t ndiSize = 1;
+ uint8_t redundancyVerSize = 2;
+ uint8_t harqProcessNumSize = 4;
+ uint8_t dlAssignmentIdxSize = 2;
+ uint8_t pucchTpcSize = 2;
+ uint8_t pucchResoIndSize = 3;
+ uint8_t harqFeedbackIndSize = 3;
+
+ freqDomResAssignSize = ceil(log2(coresetSize * (coresetSize + 1) / 2));
+
+ dciSizeInBits = (dciFormatIdSize + freqDomResAssignSize\
+ + timeDomResAssignSize + VRB2PRBMapSize + modNCodSchemeSize\
+ + ndiSize + redundancyVerSize + harqProcessNumSize + dlAssignmentIdxSize\
+ + pucchTpcSize + pucchResoIndSize + harqFeedbackIndSize);
+
+ return(dciSizeInBits);
+}
+
+/*
+ * @brief Function to calculate the aggLvl mapping with CQI index
+ *
+ * @details
+ *
+ * Function: fillCqiAggLvlMapping
+ *
+ * Fills the CQI index and Agg level mapping based on 3gpp 38.214,Table 5.2.2.1-2
+ * The mapping will be later during PDCCH allocation
+ * [Step 1]: Calculate the DciSize in bits. This will be UE-specific as it depends
+ * on CORESETsize
+ * [Step 2]: Starting from CqiIdx = 0, calculate the efficientPdcchBits which
+ * can be sent for that CQI and check if the availBits for each agg level is
+ * sufficient for that pdcch required bits.
+ * > If the bits required by PDCCH can be contained with Agg Level's
+ * availBits then that is assigned.
+ * Note:: Good channel, CQI (high value) then Aggrevation level is assigned
+ * less(less number of CCE is sufficient) and vice versa for low CQI
+ *
+ * @param[in]: PDCCH Info inside ueCb
+ *
+ * [return]: void
+ **/
+
+void fillCqiAggLvlMapping(SchPdcchInfo *pdcchInfo)
+{
+ uint8_t cqiIdx = 0, aggLvlIdx =0;
+ uint16_t numOfBitsAvailForAggLevel = 0, dciSize = 0, pdcchBits = 0;
+
+ /*[Step 1]:*/
+ dciSize = calcUeDciSizeFormat1_0(pdcchInfo->totalPrbs);
+
+ /* Initializing the map array*/
+ memset(pdcchInfo->cqiIndxAggLvlMap, 0, MAX_NUM_CQI_IDX);
+
+ /*Note: For CqiIdx = 0, aggLevel is marked as 0 which means that Channel
+ * Quality is not suitable for any transmission*/
+ for(cqiIdx = 1; cqiIdx < MAX_NUM_CQI_IDX; cqiIdx++)