Fixing ptrs time domain allocation in set_ptrs_symb_idx

openair1/PHY/NR_REFSIG/ptrs_nr.c

@@ -130,34 +130,29 @@ uint8_t get_K_ptrs(ptrs_UplinkConfig_t *ptrs_UplinkConfig, uint16_t N_RB) {
 void set_ptrs_symb_idx(uint16_t *ptrs_symbols,
                        uint8_t duration_in_symbols,
                        uint8_t start_symbol,
-                       uint8_t dmrs_type,
                        uint8_t L_ptrs,
-                       uint8_t pusch_maxLength,
-                       uint16_t ul_dmrs_symb_pos,
-                       uint16_t ofdm_symbol_size) {
-  uint8_t i, last_symbol, is_dmrs_symbol1, is_dmrs_symbol2;
-  int16_t l_ref;
-  *ptrs_symbols = 0;
-  i = 0;
-  is_dmrs_symbol1 = 0;
-  is_dmrs_symbol2 = 0;
+                       uint16_t ul_dmrs_symb_pos) {
+
+  uint8_t i = 0, last_symbol, is_dmrs_symbol, l_ref;
+  int8_t l_counter;
   l_ref         = start_symbol;
   last_symbol   = start_symbol + duration_in_symbols - 1;
 
   while ( (l_ref + i*L_ptrs) <= last_symbol) {
 
-    if((ul_dmrs_symb_pos >> max((l_ref + (i-1)*L_ptrs + 1), l_ref)) & 0x01)
-      is_dmrs_symbol1 = 1;
+    is_dmrs_symbol = 0;
 
-    if((ul_dmrs_symb_pos >> (l_ref + i*L_ptrs)) & 0x01)
-      is_dmrs_symbol2 = 0;
+    for(l_counter = l_ref + i*L_ptrs; l_counter >= max(l_ref + (i-1)*L_ptrs + 1, l_ref); l_counter--) {
 
-    if ( is_dmrs_symbol1 + is_dmrs_symbol2 > 0 ) {
-      if (pusch_maxLength == 2)
-        l_ref = l_ref + i*L_ptrs + 1;
-      else
-        l_ref = l_ref + i*L_ptrs;
+      if((ul_dmrs_symb_pos >> l_counter) & 0x01) {
+        is_dmrs_symbol = 1;
+        break;
+      }
+
+    }
 
+    if (is_dmrs_symbol) {
+      l_ref = l_counter;
       i     = 1;
       continue;
     }

openair1/PHY/NR_REFSIG/ptrs_nr.h

@@ -54,11 +54,8 @@ uint8_t get_K_ptrs(ptrs_UplinkConfig_t *ptrs_UplinkConfig, uint16_t N_RB);
 void set_ptrs_symb_idx(uint16_t *ptrs_symbols,
                        uint8_t duration_in_symbols,
                        uint8_t start_symbol,
-                       uint8_t dmrs_type,
                        uint8_t L_ptrs,
-                       uint8_t pusch_maxLength,
-                       uint16_t ul_dmrs_symb_pos,
-                       uint16_t ofdm_symbol_size);
+                       uint16_t ul_dmrs_symb_pos);
 
 uint8_t get_L_ptrs(ptrs_UplinkConfig_t *ptrs_UplinkConfig, uint8_t I_mcs);
 

openair1/PHY/NR_TRANSPORT/nr_ulsch_demodulation.c

@@ -1052,11 +1052,8 @@ void nr_rx_pusch(PHY_VARS_gNB *gNB,
       set_ptrs_symb_idx(&gNB->pusch_vars[UE_id]->ptrs_symbols,
                         rel15_ul->nr_of_symbols,
                         rel15_ul->start_symbol_index,
-                        rel15_ul->dmrs_config_type,
                         L_ptrs,
-                        1, // only dmrs of length 1 is currently supported
-                        rel15_ul->ul_dmrs_symb_pos,
-                        frame_parms->ofdm_symbol_size);
+                        rel15_ul->ul_dmrs_symb_pos);
     }
   }
 

openair1/PHY/NR_UE_TRANSPORT/nr_ulsch_ue.c

@@ -295,11 +295,8 @@ void nr_ue_ulsch_procedures(PHY_VARS_NR_UE *UE,
     set_ptrs_symb_idx(&ulsch_ue->ptrs_symbols,
                       number_of_symbols,
                       start_symbol,
-                      dmrs_type,
                       L_ptrs,
-                      number_dmrs_symbols,
-                      ul_dmrs_symb_pos,
-                      frame_parms->ofdm_symbol_size);
+                      ul_dmrs_symb_pos);
   }
 
   ///////////