embms: Experimental MBMS Couting support added / 3GPP TS 36.44 (*)

	(*) The MBMS Counting function allows the MCE to request the eNB(s) to count and
	  report per MBSFN area for one or more MBMS services the number of connected UEs
	  receiving the MBMS Service or interested in receiving it.
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

openair2/RRC/LTE/L2_interface.c

@@ -30,7 +30,7 @@
 
 /*! \file l2_interface.c
  * \brief layer 2 interface, added support for FeMBMS RRC sublayer 
- * \author J. Morgade
+ * \author Javier Morgade
  * \date 2020
  * \version 1.0
  * \email: javier.morgade@ieee.org

openair2/RRC/LTE/rrc_defs.h

@@ -715,6 +715,9 @@ typedef struct {
   LTE_BCCH_BCH_Message_MBMS_t            mib_fembms;
   LTE_BCCH_DL_SCH_Message_MBMS_t         siblock1_MBMS;
   LTE_BCCH_DL_SCH_Message_MBMS_t         systemInformation_MBMS;
+  LTE_SchedulingInfo_MBMS_r14_t 	 schedulingInfo_MBMS;
+  LTE_PLMN_IdentityInfo_t		 PLMN_identity_info_MBMS[6];
+  LTE_MCC_MNC_Digit_t			 dummy_mcc_MBMS[6][3], dummy_mnc_MBMS[6][3];
   LTE_SystemInformationBlockType1_t     *sib1;
   LTE_SystemInformationBlockType2_t     *sib2;
   LTE_SystemInformationBlockType3_t     *sib3;
@@ -731,6 +734,12 @@ typedef struct {
   LTE_MCCH_Message_t                mcch;
   LTE_MBSFNAreaConfiguration_r9_t  *mcch_message;
   SRB_INFO                          MCCH_MESS[8];// MAX_MBSFN_AREA
+  uint8_t                           **MCCH_MESSAGE_COUNTING; //  MAX_MBSFN_AREA
+  uint8_t                           sizeof_MCCH_MESSAGE_COUNTING[8];// MAX_MBSFN_AREA
+  LTE_MCCH_Message_t                mcch_counting;
+  LTE_MBMSCountingRequest_r10_t    *mcch_message_counting;
+  SRB_INFO                          MCCH_MESS_COUNTING[8];// MAX_MBSFN_AREA
+
   //TTN - SIB 18,19,21 for D2D
   LTE_SystemInformationBlockType18_r12_t *sib18;
   LTE_SystemInformationBlockType19_r12_t *sib19;

openair2/RRC/LTE/rrc_eNB.c

@@ -155,6 +155,7 @@ init_SI(
   LOG_D(RRC,"%s()\n\n\n\n",__FUNCTION__);
 
   if(configuration->radioresourceconfig[CC_id].mbms_dedicated_serving_cell == TRUE) {
+
     LOG_I(RRC, "Configuring MIB FeMBMS (N_RB_DL %d)\n",
           (int)configuration->N_RB_DL[CC_id]);
     RC.rrc[ctxt_pP->module_id]->carrier[CC_id].MIB_FeMBMS = (uint8_t *) malloc16(4);
@@ -231,6 +232,7 @@ init_SI(
             RC.rrc[ctxt_pP->module_id]->carrier[CC_id].sib1_MBMS->nonMBSFN_SubframeConfig_r14->subframeAllocation_r14.buf);
     }
 
+    RC.rrc[ctxt_pP->module_id]->carrier[CC_id].FeMBMS_flag=1;
     //AssertFatal(RC.rrc[ctxt_pP->module_id]->carrier[CC_id].sizeof_SIB1 != 255,"FATAL, RC.rrc[enb_mod_idP].carrier[CC_id].sizeof_SIB1 == 255");
   }
 
@@ -496,12 +498,15 @@ init_SI(
                            (LTE_PMCH_InfoList_r9_t *) NULL,
                            sib1_v13ext,
                            RC.rrc[ctxt_pP->module_id]->carrier[CC_id].FeMBMS_flag,
-                           (LTE_BCCH_DL_SCH_Message_MBMS_t *) NULL,
+                           (carrier->sib1_MBMS==NULL?(LTE_BCCH_DL_SCH_Message_MBMS_t *) NULL:(LTE_BCCH_DL_SCH_Message_MBMS_t *)carrier->sib1_MBMS),//(LTE_BCCH_DL_SCH_Message_MBMS_t *) NULL,
                            (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
-                           (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
-                           (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                           (LTE_MBSFN_AreaInfoList_r9_t *) NULL
-                          );
+                        (carrier->sib1_MBMS==NULL?(struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL:(struct LTE_NonMBSFN_SubframeConfig_r14 *)carrier->sib1_MBMS->nonMBSFN_SubframeConfig_r14),//(struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
+                        (carrier->sib1_MBMS==NULL?(LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL:(LTE_SystemInformationBlockType1_MBMS_r14_t *)carrier->sib1_MBMS->systemInformationBlockType13_r14),//(LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
+                        (carrier->sib1_MBMS==NULL?(LTE_MBSFN_AreaInfoList_r9_t *) NULL:(LTE_MBSFN_AreaInfoList_r9_t *)&carrier->sib1_MBMS->systemInformationBlockType13_r14->mbsfn_AreaInfoList_r9)//(LTE_MBSFN_AreaInfoList_r9_t *) NULL
+
+			,(LTE_MBSFNAreaConfiguration_r9_t*) NULL
+
+                         );
   }
 
   /* set flag to indicate that cell information is configured. This is required
@@ -584,7 +589,8 @@ init_MCCH(
                            (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
                            (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
                            (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                           (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+                           (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+			   (LTE_MBSFNAreaConfiguration_r9_t*) NULL
                           );
   }
 
@@ -1458,7 +1464,8 @@ rrc_eNB_generate_RRCConnectionReestablishment(
                                  (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
                                  (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
                                  (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                                 (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+                                 (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+			         (LTE_MBSFNAreaConfiguration_r9_t*) NULL
                                 );
           break;
         }
@@ -5759,7 +5766,8 @@ rrc_eNB_generate_HO_RRCConnectionReconfiguration(const protocol_ctxt_t *const ct
     (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
     (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
     (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-    (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+    (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+    (LTE_MBSFNAreaConfiguration_r9_t*) NULL
   );
   // Configure target eNB SRB2
   /// SRB2
@@ -6439,7 +6447,8 @@ rrc_eNB_configure_rbs_handover(struct rrc_eNB_ue_context_s *ue_context_p, protoc
     (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
     (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
     (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-    (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+    (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+    (LTE_MBSFNAreaConfiguration_r9_t*) NULL
   );
 }
 
@@ -6655,7 +6664,8 @@ rrc_eNB_process_RRCConnectionReconfigurationComplete(
                                    (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
                                    (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
                                    (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                                   (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+                                   (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+   				   (LTE_MBSFNAreaConfiguration_r9_t*) NULL
                                   );
           }
         } else {        // remove LCHAN from MAC/PHY
@@ -6714,7 +6724,8 @@ rrc_eNB_process_RRCConnectionReconfigurationComplete(
                                    (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
                                    (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
                                    (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                                   (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+                                   (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+   				   (LTE_MBSFNAreaConfiguration_r9_t*) NULL
                                   );
           }
         } // end else of if (ue_context_pP->ue_context.DRB_active[drb_id] == 0)
@@ -6876,7 +6887,8 @@ rrc_eNB_generate_RRCConnectionSetup(
                                      (LTE_SchedulingInfo_MBMS_r14_t *) NULL,
                                      (struct LTE_NonMBSFN_SubframeConfig_r14 *) NULL,
                                      (LTE_SystemInformationBlockType1_MBMS_r14_t *) NULL,
-                                     (LTE_MBSFN_AreaInfoList_r9_t *) NULL
+                                     (LTE_MBSFN_AreaInfoList_r9_t *) NULL,
+   				     (LTE_MBSFNAreaConfiguration_r9_t*) NULL
                                     );
               break;
             }
@@ -8352,6 +8364,8 @@ rrc_eNB_decode_dcch(
       case LTE_UL_DCCH_MessageType__c1_PR_mbmsCountingResponse_r10:
         T(T_ENB_RRC_MBMS_COUNTING_RESPONSE_R10, T_INT(ctxt_pP->module_id), T_INT(ctxt_pP->frame),
           T_INT(ctxt_pP->subframe), T_INT(ctxt_pP->rnti));
+    	LOG_E(RRC, "THINH [LTE_UL_DCCH_MessageType__c1_PR_mbmsCountingResponse_r10]\n");
+
         break;
 
       case LTE_UL_DCCH_MessageType__c1_PR_interFreqRSTDMeasurementIndication_r10:

openair3/M3AP/m3ap_MCE.c

@@ -142,6 +142,20 @@ void m3ap_MCE_handle_sctp_association_resp(instance_t instance, sctp_new_associa
               sctp_new_association_resp->ulp_cnx_id);
     //m3ap_handle_m3_setup_message(instance_p, m3ap_enb_data_p,
                                  //sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
+	  sleep(4);
+	  int index;
+	  /* Trying to connect to the provided list of eNB ip address */
+	  for (index = 0; index < instance_p->nb_m3; index++) {
+	    //M2AP_INFO("eNB[%d] eNB id %u acting as an initiator (client)\n",
+	     //         instance_id, instance->eNB_id);
+	    m3ap_MCE_register_MCE(instance_p,
+				  &instance_p->target_mme_m3_ip_address[index],
+				  &instance_p->mme_m3_ip_address,
+				  instance_p->sctp_in_streams,
+				  instance_p->sctp_out_streams,
+				  instance_p->mce_port_for_M3C,
+				  instance_p->multi_sd);
+	  }
     return;
   }
 

targets/RT/USER/lte-softmodem.c

@@ -713,9 +713,12 @@ int main ( int argc, char **argv )
     sync_var=0;
     pthread_cond_broadcast(&sync_cond);
     pthread_mutex_unlock(&sync_mutex);
+    create_tasks_mbms(1);
     config_check_unknown_cmdlineopt(CONFIG_CHECKALLSECTIONS);
   }
-  create_tasks_mbms(1);
+  else
+    create_tasks_mbms(1);
+  //create_tasks_mbms(1);
 
   // wait for end of program
   LOG_UI(ENB_APP,"TYPE <CTRL-C> TO TERMINATE\n");