added assertion for absolutefrequencySSB

openair2/LAYER2/NR_MAC_gNB/config.c

@@ -207,6 +207,8 @@ void config_common(int Mod_idP, int pdsch_AntennaPorts, NR_ServingCellConfigComm
   if (scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA > 2016666)
     scs_scaling = scs_scaling>>2;
   uint32_t absolute_diff = (*scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencySSB - scc->downlinkConfigCommon->frequencyInfoDL->absoluteFrequencyPointA);
+  uint16_t sco = absolute_diff%(12*scs_scaling);
+  AssertFatal(sco==0,"absoluteFrequencySSB has a subcarrier offset of %d while it should be alligned with CRBs\n",sco);
   cfg->ssb_table.ssb_offset_point_a.value = absolute_diff/(12*scs_scaling) - 10; //absoluteFrequencySSB is the central frequency of SSB which is made by 20RBs in total
   cfg->ssb_table.ssb_offset_point_a.tl.tag = NFAPI_NR_CONFIG_SSB_OFFSET_POINT_A_TAG;
   cfg->num_tlv++;