generate E2 indication

srsgnb/hdr/stack/ric/e2ap.h

@@ -46,7 +46,7 @@ public:
   int         process_subscription_request(ricsubscription_request_s subscription_request);
   e2_ap_pdu_c generate_subscription_response();
   int         generate_subscription_failure();
-  int         generate_indication();
+  e2_ap_pdu_c generate_indication();
   e2_ap_pdu_c generate_reset_request();
   e2_ap_pdu_c generate_reset_response();
   int         process_reset_request(reset_request_s reset_request);

srsgnb/hdr/stack/ric/e2sm_kpm.h

@@ -31,9 +31,9 @@ public:
   e2sm_kpm(srslog::basic_logger& logger_);
   bool
   generate_ran_function_description(int function_id, RANfunction_description desc, srsran::unique_byte_buffer_t& buf);
-  bool process_ric_action_definition();
-  bool generate_indication_header();
-  bool generate_indication_message();
+  int  process_ric_action_definition();
+  bool generate_indication_header(srsran::unique_byte_buffer_t& buf);
+  bool generate_indication_message(srsran::unique_byte_buffer_t& buf);
 
 private:
   srslog::basic_logger& logger;

srsgnb/src/stack/ric/e2ap.cc

@@ -129,9 +129,56 @@ int e2ap::process_setup_response(e2setup_resp_s setup_response)
 int e2ap::process_subscription_request(ricsubscription_request_s subscription_request)
 {
   pending_subscription_request = true;
-  // TODO process subscription request
+
+  uint16_t ran_func_id = subscription_request->ra_nfunction_id->value;
+  if (ran_functions.count(ran_func_id)) {
+    // TODO handle RIC subscription request
+  }
+
+  // TODO handle RIC subscription request
+
   return 0;
 }
+
+e2_ap_pdu_c e2ap::generate_indication()
+{
+  using namespace asn1::e2ap;
+  e2_ap_pdu_c pdu;
+
+  init_msg_s& initmsg = pdu.set_init_msg();
+  initmsg.load_info_obj(ASN1_E2AP_ID_RI_CIND);
+  initmsg.crit = asn1::crit_opts::reject;
+
+  ri_cind_s& indication = initmsg.value.ri_cind();
+
+  indication->ri_crequest_id.crit                   = asn1::crit_opts::reject;
+  indication->ri_crequest_id.value.ric_requestor_id = 1021;
+  indication->ri_crequest_id.value.ric_instance_id  = 0;
+
+  indication->ra_nfunction_id.crit  = asn1::crit_opts::reject;
+  indication->ra_nfunction_id.value = 147;
+
+  indication->ri_caction_id.crit  = asn1::crit_opts::reject;
+  indication->ri_caction_id.value = 0;
+
+  indication->ri_cind_type.crit = asn1::crit_opts::reject;
+  indication->ri_cind_type.value = ri_cind_type_opts::report;
+
+  indication->ri_cind_hdr.crit = asn1::crit_opts::reject;
+  srsran::unique_byte_buffer_t header_buf          = srsran::make_byte_buffer();
+  e2sm_.generate_indication_header(header_buf);
+  indication->ri_cind_hdr->resize(header_buf->N_bytes);
+  std::copy(header_buf->msg, header_buf->msg + header_buf->N_bytes, indication->ri_cind_hdr->data());
+
+  indication->ri_cind_msg.crit = asn1::crit_opts::reject;
+  srsran::unique_byte_buffer_t msg_buf          = srsran::make_byte_buffer();
+  e2sm_.generate_indication_message(msg_buf);
+  indication->ri_cind_msg->resize(msg_buf->N_bytes);
+  std::copy(msg_buf->msg, msg_buf->msg + msg_buf->N_bytes, indication->ri_cind_msg->data());
+
+  return pdu;
+}
+
 e2_ap_pdu_c e2ap::generate_reset_request()
 {
   using namespace asn1::e2ap;

srsgnb/src/stack/ric/e2sm_kpm.cc

@@ -67,3 +67,61 @@ bool e2sm_kpm::generate_ran_function_description(int                           f
   buf->N_bytes = bref.distance_bytes();
   return true;
 }
+
+int e2sm_kpm::process_ric_action_definition()
+{
+  return 0;
+}
+
+bool e2sm_kpm::generate_indication_header(srsran::unique_byte_buffer_t& buf)
+{
+  using namespace asn1::e2sm_kpm;
+  e2_sm_kpm_ind_hdr_s e2_sm_kpm_ind_hdr;
+  e2_sm_kpm_ind_hdr.ind_hdr_formats.ind_hdr_format1().collet_start_time.from_string("43f51164");
+
+  logger.info("Generating E2-SM-KPM Indication Header");
+  asn1::bit_ref bref(buf->msg, buf->get_tailroom());
+  if (e2_sm_kpm_ind_hdr.pack(bref) != asn1::SRSASN_SUCCESS) {
+    printf("IND HEADER: Failed to pack TX E2 PDU\n");
+    return false;
+  }
+  buf->N_bytes = bref.distance_bytes();
+
+  return true;
+}
+
+bool e2sm_kpm::generate_indication_message(srsran::unique_byte_buffer_t& buf)
+{
+  using namespace asn1::e2sm_kpm;
+  e2_sm_kpm_ind_msg_s e2_sm_kpm_ind_msg;
+  e2_sm_kpm_ind_msg.ind_msg_formats.set_ind_msg_format1();
+
+  auto& meas_data_list = e2_sm_kpm_ind_msg.ind_msg_formats.ind_msg_format1().meas_data;
+  meas_data_list.resize(1);
+  meas_data_list[0].meas_record.resize(11);
+  for (uint32_t i = 0; i < meas_data_list[0].meas_record.size(); i++) {
+    meas_data_list[0].meas_record[i].set_integer() = i * 1000;
+  }
+
+  auto& meas_info_list = e2_sm_kpm_ind_msg.ind_msg_formats.ind_msg_format1().meas_info_list;
+  meas_info_list.resize(2);
+  meas_info_list[0].meas_type.set_meas_name().from_string("PrbDlUsage");
+  meas_info_list[0].label_info_list.resize(1);
+  meas_info_list[0].label_info_list[0].meas_label.no_label_present = true;
+  meas_info_list[0].label_info_list[0].meas_label.no_label = asn1::e2sm_kpm::meas_label_s::no_label_opts::true_value;
+
+  meas_info_list[1].meas_type.set_meas_id() = 1;
+  meas_info_list[1].label_info_list.resize(1);
+  meas_info_list[1].label_info_list[0].meas_label.no_label_present = true;
+  meas_info_list[1].label_info_list[0].meas_label.no_label = asn1::e2sm_kpm::meas_label_s::no_label_opts::true_value;
+
+  logger.info("Generating E2-SM-KPM Indication Message");
+  asn1::bit_ref bref(buf->msg, buf->get_tailroom());
+  if (e2_sm_kpm_ind_msg.pack(bref) != asn1::SRSASN_SUCCESS) {
+    printf("IND MSG: Failed to pack TX E2 PDU\n");
+    return false;
+  }
+  buf->N_bytes = bref.distance_bytes();
+
+  return true;
+}

srsgnb/src/stack/ric/ric_client.cc

@@ -111,15 +111,16 @@ bool ric_client::send_e2_msg(e2_msg_type_t msg_type)
   e2_ap_pdu_c send_pdu;
   switch (msg_type) {
     case e2_msg_type_t::E2_SETUP_REQUEST:
-      send_pdu = e2ap_.generate_setup_request();
+      send_pdu     = e2ap_.generate_setup_request();
       message_name = "E2 SETUP REQUEST";
       break;
     case e2_msg_type_t::E2_SUB_RESPONSE:
-      send_pdu = e2ap_.generate_subscription_response();
+      send_pdu     = e2ap_.generate_subscription_response();
       message_name = "E2 SUBSCRIPTION RESPONSE";
       break;
     case e2_msg_type_t::E2_INDICATION:
-      // TODO create E2 INDICATION generation
+      send_pdu     = e2ap_.generate_indication();
+      message_name = "E2 INDICATION";
       break;
     case e2_msg_type_t::E2_RESET:
       send_pdu     = e2ap_.generate_reset_request();
@@ -252,12 +253,20 @@ bool ric_client::handle_e2_unsuccessful_outcome(asn1::e2ap::unsuccessful_outcome
 
 bool ric_client::handle_ric_subscription_request(ricsubscription_request_s ric_subscription_request)
 {
-    auto send_sub_resp =
-      [this]() {
-        send_e2_msg(E2_SUB_RESPONSE);
-      };
-    ric_rece_task_queue.push(send_sub_resp);
-  // TODO handle RIC subscription request
+  auto send_sub_resp = [this]() { send_e2_msg(E2_SUB_RESPONSE); };
+  ric_rece_task_queue.push(send_sub_resp);
+
+  logger.info("Received subscription request from RIC ID: %i (instance id %i) to RAN Function ID: %i \n",
+              ric_subscription_request->ri_crequest_id->ric_requestor_id,
+              ric_subscription_request->ri_crequest_id->ric_instance_id,
+              ric_subscription_request->ra_nfunction_id->value);
+
+  e2ap_.process_subscription_request(ric_subscription_request);
+
+  auto send_ind = [this]() { for(uint16_t i = 0; i < 5; i++) {send_e2_msg(E2_INDICATION);
+      sleep(1);}};
+  ric_rece_task_queue.push(send_ind);
+
   return true;
 }