e2sm_kpm: decode report_period

srsgnb/hdr/stack/ric/e2sm_kpm.h

@@ -11,6 +11,7 @@
  *
  */
 #include "e2sm.h"
+#include "srsran/asn1/e2ap.h"
 #include "srsran/asn1/e2sm.h"
 #include "srsran/asn1/e2sm_kpm_v2.h"
 #include "srsran/srsran.h"
@@ -18,6 +19,10 @@
 #ifndef RIC_E2SM_KPM_H
 #define RIC_E2SM_KPM_H
 
+struct E2SM_KPM_RIC_event_definition {
+  uint64_t report_period;
+};
+
 struct E2SM_KPM_RIC_ind_header {
   uint32_t    collet_start_time;
   std::string file_formatversion;
@@ -45,7 +50,8 @@ public:
   ~e2sm_kpm() = default;
 
   virtual bool generate_ran_function_description(RANfunction_description& desc, srsran::unique_byte_buffer_t& buf);
-  int          process_ric_action_definition();
+  bool         process_subscription_request(asn1::e2ap::ricsubscription_request_s subscription_request,
+                                            E2SM_KPM_RIC_event_definition&        event_def);
   bool         generate_indication_header(E2SM_KPM_RIC_ind_header hdr, srsran::unique_byte_buffer_t& buf);
   bool         generate_indication_message(E2SM_KPM_RIC_ind_message msg, srsran::unique_byte_buffer_t& buf);
 

srsgnb/hdr/stack/ric/ric_subscription.h

@@ -44,7 +44,7 @@ private:
   uint16_t ra_nfunction_id;
   uint16_t ri_caction_id;
 
-  uint32_t             reporting_period; // ms
+  uint32_t             reporting_period = 0; // ms
   srsran::unique_timer reporting_timer;  // for RIC indication reporting
 };
 

srsgnb/src/stack/ric/e2sm_kpm.cc

@@ -83,9 +83,20 @@ bool e2sm_kpm::generate_ran_function_description(RANfunction_description& desc,
   return true;
 }
 
-int e2sm_kpm::process_ric_action_definition()
+bool e2sm_kpm::process_subscription_request(asn1::e2ap::ricsubscription_request_s subscription_request,
+                                            E2SM_KPM_RIC_event_definition&        event_def)
 {
-  return 0;
+  using namespace asn1::e2sm_kpm;
+  e2_sm_kpm_event_trigger_definition_s trigger_def;
+  asn1::cbit_ref bref(subscription_request->ricsubscription_details->ric_event_trigger_definition.data(),
+                      subscription_request->ricsubscription_details->ric_event_trigger_definition.size());
+
+  if (trigger_def.unpack(bref) != asn1::SRSASN_SUCCESS) {
+    return false;
+  }
+
+  event_def.report_period = trigger_def.event_definition_formats.event_definition_format1().report_period;
+  return true;
 }
 
 bool e2sm_kpm::generate_indication_header(E2SM_KPM_RIC_ind_header hdr, srsran::unique_byte_buffer_t& buf)

srsgnb/src/stack/ric/ric_subscription.cc

@@ -22,11 +22,20 @@ ric_client::ric_subscription::ric_subscription(ric_client*               ric_cli
   ric_instance_id(ric_subscription_request->ri_crequest_id->ric_instance_id),
   ra_nfunction_id(ric_subscription_request->ra_nfunction_id->value)
 {
-  reporting_period = 1000;
   reporting_timer  = parent->task_sched.get_unique_timer();
 
-  // TODO: process request to know what to report
   parent->e2ap_.process_subscription_request(ric_subscription_request);
+
+  RANfunction_description ran_func_desc;
+  if (!parent->e2ap_.get_func_desc(ra_nfunction_id, ran_func_desc)) {
+    return;
+  }
+
+  E2SM_KPM_RIC_event_definition event_def;
+  e2sm_kpm*                     sm_kpm_ptr = dynamic_cast<e2sm_kpm*>(ran_func_desc.sm_ptr);
+  if (sm_kpm_ptr->process_subscription_request(ric_subscription_request, event_def)) {
+    reporting_period = event_def.report_period;
+  }
 }
 
 void ric_client::ric_subscription::start_ric_indication_reporting()
@@ -43,11 +52,13 @@ void ric_client::ric_subscription::start_ric_indication_reporting()
   e2_ap_pdu_c send_pdu = parent->e2ap_.generate_subscription_response(ric_subscription_reponse);
   parent->queue_send_e2ap_pdu(send_pdu);
 
+  if (reporting_period) {
     printf("Start sending RIC indication msgs every %i ms\n", reporting_period);
     parent->logger.debug("Start sending RIC indication msgs every %i ms", reporting_period);
     reporting_timer.set(reporting_period, [this](uint32_t tid) { send_ric_indication(); });
     reporting_timer.run();
   }
+}
 
 void ric_client::ric_subscription::stop_ric_indication_reporting()
 {