sib acquiring is failing for sib2

srsue/hdr/stack/rrc/rrc.h

@@ -152,11 +152,7 @@ public:
   float get_rsrp() { return rsrp; }
   float get_rsrq() { return rsrq; }
 
-  void set_sib1(asn1::rrc::sib_type1_s* sib1_)
-  {
-    sib1           = *sib1_;
-    has_valid_sib1 = true;
-  }
+  void set_sib1(asn1::rrc::sib_type1_s* sib1_);
   void set_sib2(asn1::rrc::sib_type2_s* sib2_)
   {
     sib2           = *sib2_;
@@ -259,6 +255,8 @@ public:
     return std::string{buf};
   }
 
+  bool is_sib_scheduled(uint32_t sib_index) const;
+
   phy_interface_rrc_lte::phy_cell_t phy_cell = {};
   bool                              has_mcch = false;
   asn1::rrc::sib_type1_s            sib1;
@@ -273,10 +271,11 @@ private:
 
   struct timeval last_update = {};
 
-  bool has_valid_sib1  = false;
-  bool has_valid_sib2  = false;
-  bool has_valid_sib3  = false;
-  bool has_valid_sib13 = false;
+  bool                         has_valid_sib1  = false;
+  bool                         has_valid_sib2  = false;
+  bool                         has_valid_sib3  = false;
+  bool                         has_valid_sib13 = false;
+  std::map<uint32_t, uint32_t> sib_info_map; ///< map of sib_index to index of schedInfoList in SIB1
 };
 
 class rrc : public rrc_interface_nas,

srsue/src/stack/rrc/rrc.cc

@@ -45,6 +45,24 @@ namespace srsue {
 const static uint32_t NOF_REQUIRED_SIBS                = 4;
 const static uint32_t required_sibs[NOF_REQUIRED_SIBS] = {0, 1, 2, 12}; // SIB1, SIB2, SIB3 and SIB13 (eMBMS)
 
+void cell_t::set_sib1(asn1::rrc::sib_type1_s* sib1_)
+{
+  sib1           = *sib1_;
+  has_valid_sib1 = true;
+
+  sib_info_map.clear();
+  for (uint32_t i = 0; i < sib1.sched_info_list.size(); ++i) {
+    for (uint32_t j = 0; j < sib1.sched_info_list[i].sib_map_info.size(); ++j) {
+      sib_info_map.insert(std::make_pair(sib1.sched_info_list[i].sib_map_info[j].to_number() - 1, i));
+    }
+  }
+}
+
+bool cell_t::is_sib_scheduled(uint32_t sib_index) const
+{
+  return sib_info_map.find(sib_index) != sib_info_map.end();
+}
+
 /*******************************************************************************
   Base functions
 *******************************************************************************/

srsue/src/stack/rrc/rrc_procedures.cc

@@ -379,8 +379,8 @@ srslte::proc_outcome_t rrc::serving_cell_config_proc::launch_sib_acquire()
   // Obtain the SIBs if not available or apply the configuration if available
   for (; req_idx < required_sibs.size(); req_idx++) {
     uint32_t required_sib = required_sibs[req_idx];
-
-    if (not rrc_ptr->serving_cell->has_sib(required_sib)) {
+    if (not rrc_ptr->serving_cell->has_sib(required_sib) and
+        (required_sib < 2 or rrc_ptr->serving_cell->is_sib_scheduled(required_sib))) {
       Info("Cell has no SIB%d. Obtaining SIB%d\n", required_sib + 1, required_sib + 1);
       if (not rrc_ptr->si_acquirer.launch(&si_acquire_fut, required_sib)) {
         Error("SI Acquire is already running...\n");