Create gNB_scheduler_SRS.c

cmake_targets/CMakeLists.txt

@@ -2120,6 +2120,7 @@ set (MAC_NR_SRC
   ${NR_GNB_MAC_DIR}/gNB_scheduler_phytest.c
   ${NR_GNB_MAC_DIR}/gNB_scheduler_uci.c
   ${NR_GNB_MAC_DIR}/gNB_scheduler_RA.c
+  ${NR_GNB_MAC_DIR}/gNB_scheduler_SRS.c
  )
 
 

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

@@ -346,7 +346,7 @@ typedef struct {
   uint8_t time_start_position;        // Starting position in the time domain l_0 [3GPP TS 38.211, Sec 6.4.1.4.1], Note: the MAC undertakes the translation from startPosition to l_0, Value: 0 --> 13
   uint8_t config_index;               // SRS bandwidth config index C_SRS [3GPP TS 38.211, Sec 6.4.1.4.3], Value: 0 --> 63
   uint16_t sequence_id;               // SRS sequence ID n_SRS_ID [3GPP TS 38.211, Sec 6.4.1.4.2], Value: 0 --> 1023
-  uint8_t  bandwidth_index;           // SRS bandwidth index B_SRS [3GPP TS 38.211, Sec 6.4.1.4.3], Value: 0 --> 3
+  uint8_t bandwidth_index;            // SRS bandwidth index B_SRS [3GPP TS 38.211, Sec 6.4.1.4.3], Value: 0 --> 3
   uint8_t comb_size;                  // Transmission comb size K_TC [3GPP TS 38.211, Sec 6.4.1.4.2], Value: 0 = comb size 2, 1 = comb size 4, 2 = comb size 8 (Rel16)
   uint8_t comb_offset;                // Transmission comb offset K'_TC[3GPP TS 38.211, Sec 6.4.1.4.3], Value: 0 --> 1 (combSize = 0), Value: 0 --> 3 (combSize = 1), Value: 0 --> 7 (combSize = 2)
   uint8_t cyclic_chift;               // Cyclic shift n_CS_SRS [3GPP TS 38.211, Sec 6.4.1.4.2], Value: 0 --> 7 (combSize = 0), Value: 0 --> 11 (combSize = 1), Value: 0 --> 5 (combSize = 2)
@@ -367,7 +367,7 @@ typedef struct {
     fapi_nr_ul_config_prach_pdu prach_config_pdu;
     fapi_nr_ul_config_pucch_pdu pucch_config_pdu;
     nfapi_nr_ue_pusch_pdu_t     pusch_config_pdu;
-    fapi_nr_ul_config_srs_pdu srs_config_pdu;
+    fapi_nr_ul_config_srs_pdu   srs_config_pdu;
   };
 } fapi_nr_ul_config_request_pdu_t;
 

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

@@ -397,6 +397,8 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
 
   nr_schedule_pucch(module_idP, frame, slot);
 
+  nr_schedule_srs(module_idP, frame, slot);
+
   stop_meas(&RC.nrmac[module_idP]->eNB_scheduler);
   
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_gNB_DLSCH_ULSCH_SCHEDULER,VCD_FUNCTION_OUT);

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_SRS.c

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file     gNB_scheduler_SRS.c
+ * \brief     primitives used for sounding reference signal
+ * \date      2021
+ */
+
+#include "platform_types.h"
+
+/* MAC */
+#include "nr_mac_gNB.h"
+#include "NR_MAC_COMMON/nr_mac_extern.h"
+
+/* Utils */
+#include "common/utils/LOG/vcd_signal_dumper.h"
+
+void nr_schedule_srs_aperiodic(module_id_t module_idP,
+                               frame_t frameP,
+                               sub_frame_t slotP,
+                               NR_SRS_ResourceSet_t *srs_resource_set) {
+  LOG_W(NR_PHY, "Aperiodic SRS scheduling is not implemented yet!\n");
+}
+
+void nr_schedule_srs_semi_persistent(module_id_t module_idP,
+                               frame_t frameP,
+                               sub_frame_t slotP,
+                               NR_SRS_ResourceSet_t *srs_resource_set) {
+  LOG_W(NR_PHY, "Semi-persistent SRS scheduling is not implemented yet!\n");
+}
+
+void nr_schedule_srs_periodic(module_id_t module_idP,
+                                     frame_t frameP,
+                                     sub_frame_t slotP,
+                                     NR_SRS_ResourceSet_t *srs_resource_set) {
+  LOG_W(NR_PHY, "Periodic SRS scheduling is not implemented yet!\n");
+}
+
+void nr_schedule_srs(module_id_t module_idP, frame_t frameP, sub_frame_t slotP) {
+
+  gNB_MAC_INST *mac = RC.nrmac[module_idP];
+
+  for (int UE_id = 0; UE_id < MAX_MOBILES_PER_GNB; UE_id++) {
+    NR_CellGroupConfig_t *cg = mac->UE_info.CellGroup[UE_id];
+    NR_BWP_UplinkDedicated_t *ubwpd = NULL;
+    if (cg &&
+        cg->spCellConfig &&
+        cg->spCellConfig->spCellConfigDedicated &&
+        cg->spCellConfig->spCellConfigDedicated->uplinkConfig &&
+        cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP) {
+      ubwpd = cg->spCellConfig->spCellConfigDedicated->uplinkConfig->initialUplinkBWP;
+    } else {
+      continue;
+    }
+
+    NR_SRS_Config_t *srs_Config = ubwpd->srs_Config->choice.setup;
+
+    for(int rs = 0; rs < srs_Config->srs_ResourceSetToAddModList->list.count; rs++) {
+      NR_SRS_ResourceSet_t *srs_resource_set = srs_Config->srs_ResourceSetToAddModList->list.array[rs];
+      switch (srs_resource_set->resourceType.present) {
+        case NR_SRS_ResourceSet__resourceType_PR_aperiodic:
+          nr_schedule_srs_aperiodic(module_idP, frameP, slotP, srs_resource_set);
+          break;
+        case NR_SRS_ResourceSet__resourceType_PR_semi_persistent:
+          nr_schedule_srs_semi_persistent(module_idP, frameP, slotP, srs_resource_set);
+          break;
+        case NR_SRS_ResourceSet__resourceType_PR_periodic:
+          nr_schedule_srs_periodic(module_idP, frameP, slotP, srs_resource_set);
+          break;
+        default:
+          break;
+      }
+    }
+  }
+}
\ No newline at end of file

openair2/LAYER2/NR_MAC_gNB/mac_proto.h

@@ -190,6 +190,8 @@ void nr_schedule_pucch(int Mod_idP,
                        frame_t frameP,
                        sub_frame_t slotP);
 
+void nr_schedule_srs(module_id_t module_idP, frame_t frameP, sub_frame_t slotP);
+
 void nr_csirs_scheduling(int Mod_idP,
                          frame_t frame,
                          sub_frame_t slot,