nfapi changes/payload scrambling

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h

@@ -3,6 +3,9 @@
 
 #include "nfapi_interface.h"
 
+
+#define NFAPI_NR_MAX_NB_CCE_AGGREGATION_LEVELS 5
+
 // nFAPI enums
 typedef enum {
   NFAPI_NR_DL_CONFIG_DCI_DL_PDU_TYPE = 0,
@@ -283,7 +286,7 @@ uint8_t beta_offset_indicator; //0 or 2 bits
 uint8_t dmrs_sequence_initialization; //0 or 1 bit
 uint8_t ul_sch_indicator; //1 bit
 
-} nfapi_nr_ul_config_dci_ul_pdu_rel15_t;
+} nfapi_nr_ul_config_dci_pdu_rel15_t;
 //#define NFAPI_NR_UL_CONFIG_REQUEST_DCI_UL_PDU_REL15_TAG 0x????
 
 //formats 1_0, 1_1, 2_0, 2_1, 2_2 and 2_3
@@ -340,39 +343,41 @@ uint16_t *pre_emption_indications; //14 bit
 uint8_t block_number_count;
 uint8_t *block_numbers;
 
-} nfapi_nr_dl_config_dci_dl_pdu_rel15_t;
+} nfapi_nr_dl_config_dci_pdu_rel15_t;
 //#define NFAPI_NR_DL_CONFIG_REQUEST_DCI_DL_PDU_REL15_TAG 0x????
 
 
 typedef struct{
-  nfapi_uint16_tlv_t  controlResourceSetId;                           ///// L1 parameter 'CORESET-ID'
-  nfapi_uint16_tlv_t  frequencyDomainResources;                       ///// L1 parameter 'CORESET-freq-dom'
+  nfapi_uint16_tlv_t  coreset_id;                           ///// L1 parameter 'CORESET-ID'
+  nfapi_uint16_tlv_t  frequency_domain_resources;                       ///// L1 parameter 'CORESET-freq-dom'
   nfapi_uint16_tlv_t  duration;                                       ///// L1 parameter 'CORESET-time-duration'
-  nfapi_uint16_tlv_t  cce_REG_MappingType;                            ///// L1 parameter 'CORESET-CCE-REG-mapping-type'
-  nfapi_uint16_tlv_t  reg_BundleSize;                                 ///// L1 parameter 'CORESET-REG-bundle-size'
-  nfapi_uint16_tlv_t  interleaverSize;                                ///// L1 parameter 'CORESET-interleaver-size'
-  nfapi_uint16_tlv_t  shiftIndex;                                     ///// L1 parameter 'CORESET-shift-index'
-  nfapi_uint16_tlv_t  precoderGranularity;                            ///// L1 parameter 'CORESET-precoder-granuality'
-  nfapi_uint16_tlv_t  TCI_StateId;                                    ///// L1 parameter 'TCI-StatesPDCCH'
-  nfapi_uint16_tlv_t  tci_PresentInDCI;                               ///// L1 parameter 'TCI-PresentInDCI'
-  nfapi_uint16_tlv_t  pdcch_DMRS_ScramblingID;                        ///// L1 parameter 'PDCCH-DMRS-Scrambling-ID'
-} nfapi_nr_ControlResourcesSets_t;
+  nfapi_uint16_tlv_t  cce_reg_mapping_ype;                            ///// L1 parameter 'CORESET-CCE-REG-mapping-type'
+  nfapi_uint16_tlv_t  reg_bundle_size;                                 ///// L1 parameter 'CORESET-REG-bundle-size'
+  nfapi_uint16_tlv_t  interleaver_size;                                ///// L1 parameter 'CORESET-interleaver-size'
+  nfapi_uint16_tlv_t  shift_index;                                     ///// L1 parameter 'CORESET-shift-index'
+  nfapi_uint16_tlv_t  precoder_granularity;                            ///// L1 parameter 'CORESET-precoder-granuality'
+  nfapi_uint16_tlv_t  tci_state_id;                                    ///// L1 parameter 'TCI-StatesPDCCH'
+  nfapi_uint16_tlv_t  tci_present_in_dci;                               ///// L1 parameter 'TCI-PresentInDCI'
+  nfapi_uint16_tlv_t  pdcch_dmrs_scrambling_id;                        ///// L1 parameter 'PDCCH-DMRS-Scrambling-ID'
+} nfapi_nr_coreset_t;
 
 typedef struct{
-  nfapi_uint16_tlv_t  SearchSpaceId;
-  nfapi_uint16_tlv_t  controlResourceSetId;
-  nfapi_uint16_tlv_t  monitoringSlotPeriodicityAndOffset;             ///// L1 parameters 'Montoring-periodicity-PDCCH-slot'
-  nfapi_uint16_tlv_t  monitoringSymbolsWithinSlot;                    ///// L1 parameter 'Montoring-symbols-PDCCH-within-slot'
-  nfapi_uint16_tlv_t  nrofCand_aggLevel1;                             ///// L1 parameter 'Aggregation-level-1'
-  nfapi_uint16_tlv_t  nrofCand_aggLevel2;                             ///// L1 parameter 'Aggregation-level-2'
-  nfapi_uint16_tlv_t  nrofCand_aggLevel4;                             ///// L1 parameter 'Aggregation-level-4'
-  nfapi_uint16_tlv_t  nrofCand_aggLevel8;                             ///// L1 parameter 'Aggregation-level-8'
-  nfapi_uint16_tlv_t  nrofCand_aggLevel16;                            ///// L1 parameter 'Aggregation-level-16'
+  nfapi_uint16_tlv_t  search_space_id;
+  nfapi_uint16_tlv_t  coreset_id;
+  nfapi_uint16_tlv_t  monitoring_slot_periodicity_and_offset;             ///// L1 parameters 'Montoring-periodicity-PDCCH-slot'
+  nfapi_uint16_tlv_t  monitoring_symbols_within_slot;                    ///// L1 parameter 'Montoring-symbols-PDCCH-within-slot'
+  nfapi_uint16_tlv_t  number_of_candidates[NFAPI_NR_MAX_NB_CCE_AGGREGATION_LEVELS];                             ///// L1 parameter 'Aggregation-level-1/2/4/8/16'
   nfapi_uint16_tlv_t  Com_dci_Format2_0_nrofCand_SFI_And_aggLevel;    ///// L1 parameters 'SFI-Num-PDCCH-cand' and 'SFI-Aggregation-Level'
   nfapi_uint16_tlv_t  Com_dci_Format2_3_monitoringPeriodicity;        ///// L1 parameter 'SRS-monitoring-periodicity'
   nfapi_uint16_tlv_t  Com_dci_Format2_3_nrofPDCCH_Candidates;         ///// L1 parameter 'SRS-Num-PDCCH-cand'
   nfapi_uint16_tlv_t  ue_Specific_dci_Formats;
-} nfapi_nr_SearchSpaces_t;
+} nfapi_nr_search_space_t;
+
+typedef struct {
+  nfapi_tl_t tl;
+  nfapi_nr_search_space_t search_space;
+  
+} nfapi_nr_dl_config_pdcch_parameters_rel15_t;
 
 typedef struct {
   nfapi_tl_t tl;
@@ -385,18 +390,18 @@ typedef struct {
 
 typedef struct {
   nfapi_tl_t tl;
-  nfapi_nr_SearchSpaces_t           sib1searchSpace;
-  nfapi_nr_ControlResourcesSets_t   sib1ControlResourceSets;
-  nfapi_nr_SearchSpaces_t           sibssearchSpace;
-  nfapi_nr_ControlResourcesSets_t   sibsControlResourceSets; 
-  nfapi_nr_SearchSpaces_t           ra_SearchSpace;
-  nfapi_nr_ControlResourcesSets_t   ra_ControlResourceSets;
+  nfapi_nr_search_space_t           sib1searchSpace;
+  nfapi_nr_coreset_t   sib1ControlResourceSets;
+  nfapi_nr_search_space_t           sibssearchSpace;
+  nfapi_nr_coreset_t   sibsControlResourceSets; 
+  nfapi_nr_search_space_t           ra_SearchSpace;
+  nfapi_nr_coreset_t   ra_ControlResourceSets;
 }nfapi_nr_dl_config_dlsch_pdu_rel15_t;
 
 typedef struct {
   nfapi_tl_t tl;
-  nfapi_nr_SearchSpaces_t           pagingSearchSpace;
-  nfapi_nr_ControlResourcesSets_t   pagingControlResourceSets;
+  nfapi_nr_search_space_t           pagingSearchSpace;
+  nfapi_nr_coreset_t   pagingControlResourceSets;
 }nfapi_nr_dl_config_pch_pdu_rel15_t;
 
 typedef struct {
@@ -411,12 +416,14 @@ typedef struct {
   
 }nfapi_nr_dl_config_ndlsch_pdu_rel15_t;
 
+
 typedef struct {
   uint8_t pdu_type;
   uint8_t pdu_size;
+
   union {
-    nfapi_nr_dl_config_dci_dl_pdu_rel15_t     dci_dl_pdu_rel15;
-    nfapi_nr_ul_config_dci_ul_pdu_rel15_t     dci_ul_pdu_rel15;
+  nfapi_nr_dl_config_dci_pdu_rel15_t     dci_dl_pdu_rel15;
+  nfapi_nr_ul_config_dci_pdu_rel15_t     dci_ul_pdu_rel15;
   nfapi_nr_dl_config_bch_pdu_rel15_t        bch_pdu_rel15;
   nfapi_nr_dl_config_dlsch_pdu_rel15_t      dlsch_pdu_rel15;
   nfapi_nr_dl_config_pch_pdu_rel15_t        pch_pdu_rel15;
@@ -424,6 +431,8 @@ typedef struct {
   nfapi_nr_dl_config_npdcch_pdu_rel15_t     npdcch_pdu_rel15;
   nfapi_nr_dl_config_ndlsch_pdu_rel15_t     ndlsch_pdu_rel15;
   };
+
+  nfapi_nr_dl_config_pdcch_parameters_rel15_t pdcch_params_rel15;
 } nfapi_nr_dl_config_request_pdu_t;
  
 typedef struct {

openair1/PHY/NR_TRANSPORT/nr_dci.c

@@ -38,7 +38,7 @@
 extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
 
 uint8_t nr_get_dci_size(nr_dci_format_e format,
-                        nr_rnti_type_e rnti,
+                        nr_rnti_type_e rnti_type,
                         NR_BWP_PARMS* bwp,
                         nfapi_nr_config_request_t* config)
 {
@@ -50,7 +50,7 @@ uint8_t nr_get_dci_size(nr_dci_format_e format,
     case nr_dci_format_0_0:
       /// fixed: Format identifier 1, Hop flag 1, MCS 5, NDI 1, RV 2, HARQ PID 4, PUSCH TPC 2 Time Domain assgnmt 4 --20
       size += 20;
-      size += (uint8_t)ceil( log2( (N_RB*(N_RB+1))>>2 ) ); // Freq domain assignment -- hopping scenario to be updated
+      size += (uint8_t)ceil( log2( (N_RB*(N_RB+1))>>1 ) ); // Freq domain assignment -- hopping scenario to be updated
       // UL/SUL indicator assumed to be 0
       // Padding
       break;
@@ -80,7 +80,7 @@ uint8_t nr_get_dci_size(nr_dci_format_e format,
     case nr_dci_format_1_0:
       /// fixed: Format identifier 1, VRB2PRB 1, MCS 5, NDI 1, RV 2, HARQ PID 4, DAI 2, PUCCH TPC 2, PUCCH RInd 3, PDSCH to HARQ TInd 3 --24
       size += 24;
-      size += (uint8_t)ceil( log2( (N_RB*(N_RB+1))>>2 ) ); // Freq domain assignment
+      size += (uint8_t)ceil( log2( (N_RB*(N_RB+1))>>1 ) ); // Freq domain assignment
       // Time domain assignment
       break;
 
@@ -130,12 +130,37 @@ uint8_t nr_get_dci_size(nr_dci_format_e format,
   return size;
 }
 
+void nr_pdcch_scrambling(NR_gNB_DCI_ALLOC_t dci_alloc,
+                         nr_pdcch_vars_t pdcch_vars,
+                         nfapi_nr_config_request_t config,
+                         uint32_t* out) {
+
+  uint8_t reset;
+  uint32_t x1, x2, s=0;
+  uint32_t Nid = (dci_alloc.ss_type == nr_pdcch_uss_type)? pdcch_vars.dmrs_scrambling_id : config.sch_config.physical_cell_id.value;
+  uint32_t n_RNTI = (dci_alloc.ss_type == nr_pdcch_uss_type)? dci_alloc.rnti : 0;
+  uint32_t *in = dci_alloc.dci_pdu;
+
+  reset = 1;
+  x2 = (n_RNTI<<16) + Nid;
+
+  for (int i=0; i<dci_alloc.size; i++) {
+    if ((i&0x1f)==0) {
+      s = lte_gold_generic(&x1, &x2, reset);
+      reset = 0;
+    }
+    *out ^= (((*in)>>i)&1) ^ ((s>>i)&1);
+  }  
+
+}
+
 uint8_t nr_generate_dci_top(NR_gNB_DCI_ALLOC_t dci_alloc,
                             uint32_t *gold_pdcch_dmrs,
                             int32_t** txdataF,
                             int16_t amp,
-                            NR_DL_FRAME_PARMS* frame_parms,
-                            nfapi_nr_config_request_t* config)
+                            NR_DL_FRAME_PARMS frame_parms,
+                            nfapi_nr_config_request_t config,
+                            nr_pdcch_vars_t pdcch_vars)
 {
 
   uint16_t mod_dmrs[NR_MAX_PDCCH_DMRS_LENGTH<<1];
@@ -152,5 +177,13 @@ uint8_t nr_generate_dci_top(NR_gNB_DCI_ALLOC_t dci_alloc,
 #endif
   }
 
+  /// DCI payload processing
+    // scrambling
+  uint32_t scrambled_payload[4]; 
+  nr_pdcch_scrambling(dci_alloc, pdcch_vars, config, scrambled_payload);
+
+    // QPSK modulation
+  
+
   return 0;
 }

openair1/PHY/NR_TRANSPORT/nr_dci.h

@@ -61,6 +61,11 @@ typedef enum {
   nr_ssb_and_cset_mux_pattern_type_3
 } nr_ssb_and_cset_mux_pattern_type_e;
 
+typedef enum {
+  nr_cce_reg_mapping_interleaved=0,
+  nr_cce_reg_mapping_non_interleaved
+} nr_cce_reg_mapping_type_e;
+
 typedef struct {
   uint8_t param_O;
   uint8_t param_M;
@@ -80,6 +85,8 @@ typedef struct {
   uint8_t first_slot;
   uint8_t nb_slots;
   uint8_t sfn_mod2;
+  uint32_t dmrs_scrambling_id;
+  nr_cce_reg_mapping_type_e cr_mapping_type;
   nr_pdcch_ss_params_t ss_params;
   nr_pdcch_coreset_params_t coreset_params;
 } nr_pdcch_vars_t;
@@ -89,22 +96,20 @@ typedef struct {
   uint8_t size;
   /// Aggregation level
   uint8_t L;
-  /// Position of first CCE of the dci
-  int firstCCE;
-  /// flag to indicate that this is a RA response
-  boolean_t ra_flag;
-  /// rnti
+  /// rnti type
   nr_rnti_type_e rnti;
   /// Format
-  DCI_format_t format;
+  nr_dci_format_e format;
+  /// type
+  nr_pdcch_ss_type_e ss_type;
   /// DCI pdu
-  uint8_t dci_pdu[8];
+  uint32_t dci_pdu[4];
 } NR_gNB_DCI_ALLOC_t;
 
 typedef unsigned __int128 uint128_t;
 
 uint8_t nr_get_dci_size(nr_dci_format_e format,
-                        nr_rnti_type_e rnti,
+                        nr_rnti_type_e rnti_type,
                         NR_BWP_PARMS* bwp,
                         nfapi_nr_config_request_t* config);
 
@@ -112,7 +117,13 @@ uint8_t nr_generate_dci_top(NR_gNB_DCI_ALLOC_t dci_alloc,
                             uint32_t *gold_pdcch_dmrs,
                             int32_t** txdataF,
                             int16_t amp,
-                            NR_DL_FRAME_PARMS* frame_parms,
-                            nfapi_nr_config_request_t* config);
+                            NR_DL_FRAME_PARMS frame_parms,
+                            nfapi_nr_config_request_t config,
+                            nr_pdcch_vars_t pdcch_vars);
+
+void nr_pdcch_scrambling(NR_gNB_DCI_ALLOC_t dci_alloc,
+                         nr_pdcch_vars_t pdcch_vars,
+                         nfapi_nr_config_request_t config,
+                         uint32_t* out);
 
 #endif //__PHY_NR_TRANSPORT_DCI__H

openair1/SCHED_NR/phy_procedures_nr_common.c

@@ -60,7 +60,7 @@ nr_subframe_t nr_subframe_select(nfapi_nr_config_request_t *cfg,unsigned char su
 }
 
 
-void nr_get_type0_coreset_and_ss_params(nr_pdcch_vars_t *pdcch_vars,
+void nr_get_pdcch_vars_from_mib(nr_pdcch_vars_t *pdcch_vars,
                           nr_scs_e scs_common,
                           nr_scs_e pdcch_scs,
                           nr_frequency_range_e freq_range,
@@ -170,8 +170,17 @@ void nr_get_pdcch_type_0_monitoring_period(nr_pdcch_vars_t *pdcch_vars,
     pdcch_vars->sfn_mod2 = ((uint8_t)(floor( (O*pow(2, mu) + floor(ssb_idx*M)) / nb_slots_per_frame )) & 1)? 1 : 0;
     pdcch_vars->first_slot = (uint8_t)(O*pow(2, mu) + floor(ssb_idx*M)) % nb_slots_per_frame;
   }
-  else { //nr_pdcch_mux_pattern_type_2, nr_pdcch_mux_pattern_type_3
+  else { //nr_ssb_and_cset_mux_pattern_type_2, nr_ssb_and_cset_mux_pattern_type_3
     pdcch_vars->nb_slots = 1;
   }
 
 }
+
+void nr_get_pdcch_vars_from_config(nr_pdcch_vars_t* pdcch_vars,
+                                   nfapi_nr_coreset_t* coreset,
+                                   nfapi_nr_search_space_t* search_space) {
+
+  nr_pdcch_coreset_params_t cset_params = pdcch_vars->coreset_params;
+  nr_pdcch_ss_params_t ss_params = pdcch_vars->ss_params;
+  
+}

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -181,6 +181,7 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
 
     //temporary DCI generation test
     NR_gNB_DCI_ALLOC_t dci_alloc;
-    nr_generate_dci_top(dci_alloc, gNB->nr_gold_pdcch_dmrs[0][0],gNB->common_vars.txdataF, 512, fp, cfg);
+    nr_pdcch_vars_t pdcch_vars;
+    nr_generate_dci_top(dci_alloc, gNB->nr_gold_pdcch_dmrs[0][0],gNB->common_vars.txdataF, 512, *fp, *cfg, pdcch_vars);
   }
 }

openair1/SCHED_NR/sched_nr.h

@@ -42,7 +42,7 @@ void nr_feptx_ofdm(RU_t *ru);
 void nr_feptx_ofdm_2thread(RU_t *ru);
 void nr_feptx0(RU_t *ru,int slot);
 
-void nr_get_type0_coreset_and_ss_params(nr_pdcch_vars_t *pdcch_vars,
+void nr_get_pdcch_vars_from_mib(nr_pdcch_vars_t *pdcch_vars,
                           nr_scs_e scs_common,
                           nr_scs_e pdcch_scs,
                           nr_frequency_range_e freq_range,