debug to the rrc_mac_data_req_eNB_NB_IoT()

openair1/SCHED/defs_NB_IoT.h

@@ -42,6 +42,12 @@ NB_IoT_DL_FRAME_PARMS *get_NB_IoT_frame_parms(module_id_t Mod_id, uint8_t CC_id)
 
 int16_t get_hundred_times_delta_IF_eNB_NB_IoT(PHY_VARS_eNB_NB_IoT *phy_vars_eNB,uint8_t UE_id,uint8_t harq_pid, uint8_t bw_factor);
 
+uint32_t is_SIB1_NB_IoT(const frame_t          frameP,
+                        long                   schedulingInfoSIB1,   //from the mib
+                        int                    physCellId,           //by configuration
+                        NB_IoT_eNB_NDLSCH_t   *ndlsch_SIB1
+                        );
+
 #endif
 
 

openair1/SCHED/phy_procedures_lte_eNb_NB_IoT.c

@@ -88,18 +88,123 @@
 ///fifo_dump_emos_eNB emos_dump_eNB;
 ///#endif
 
-/*
-#if defined(SMBV) 
-extern const char smbv_fname[];
-extern unsigned short config_frames[4];
-extern uint8_t smbv_frame_cnt;
-#endif
+int npdsch_rep_to_array[3]      = {4,8,16}; //TS 36.213 Table 16.4.1.3-3
+int sib1_startFrame_to_array[4] = {0,16,32,48};//TS 36.213 Table 16.4.1.3-4
+
+//New----------------------------------------------------
+//return -1 whenever no SIB1-NB transmission occur.
+//return sib1_startFrame when transmission occur in the current frame
+uint32_t is_SIB1_NB_IoT(const frame_t          frameP,
+                        long                   schedulingInfoSIB1,   //from the mib
+                        int                    physCellId,           //by configuration
+                        NB_IoT_eNB_NDLSCH_t   *ndlsch_SIB1
+                        )
+{
+  uint8_t    nb_rep=0; // number of sib1-nb repetitions within the 256 radio frames
+  uint32_t   sib1_startFrame;
+  uint32_t   sib1_period_NB_IoT = 256;//from specs TS 36.331 (rf)
+  uint8_t    index;
+  int        offset;
+  int        period_nb; // the number of the actual period over the 1024 frames
+
+        if(schedulingInfoSIB1 > 11 || schedulingInfoSIB1 < 0){
+          LOG_E(RRC, "is_SIB1_NB_IoT: schedulingInfoSIB1 value not allowed");
+          return 0;
+        }
+
+
+        //SIB1-NB period number
+        period_nb = (int) frameP/sib1_period_NB_IoT;
+
+
+        //number of repetitions
+        nb_rep = npdsch_rep_to_array[schedulingInfoSIB1%3];
+
+        //based on number of rep. and the physical cell id we derive the starting radio frame (TS 36.213 Table 16.4.1.3-3/4)
+        switch(nb_rep)
+        {
+        case 4:
+          //physCellId%4 possible value are 0,1,2,3
+          sib1_startFrame = sib1_startFrame_to_array[physCellId%4];
+          break;
+        case 8:
+          //physCellId%2possible value are 0,1
+          sib1_startFrame = sib1_startFrame_to_array[physCellId%2];
+          break;
+        case 16:
+          //physCellId%2 possible value are 0,1
+          if(physCellId%2 == 0)
+            sib1_startFrame = 0;
+          else
+            sib1_startFrame = 1; // the only case in which the starting frame is odd
+          break;
+        default:
+          LOG_E(RRC, "Number of repetitions %d not allowed", nb_rep);
+          return -1;
+        }
+
+        //check the actual frame w.r.t SIB1-NB starting frame
+        if(frameP < sib1_startFrame + period_nb*256){
+          LOG_T(RRC, "the actual frame %d is before the SIB1-NB starting frame %d of the period--> bcch_sdu_legnth = 0", frameP, sib1_startFrame + period_nb*256);
+          return -1;
+        }
+
+
+        //calculate offset between SIB1-NB repetitions (repetitions are equally spaced)
+        offset = (sib1_period_NB_IoT-(16*nb_rep))/nb_rep;
+
+        //loop over the SIB1-NB period
+        for( int i = 0; i < nb_rep; i++)
+        {
+          //find the correct sib1-nb repetition interval in which the actual frame is
+
+          //this is the start frame of a repetition
+          index = sib1_startFrame+ i*(16+offset) + period_nb*256;
+
+          //the actual frame is in a gap between two consecutive repetitions
+          if(frameP < index)
+          {
+              ndlsch_SIB1->sib1_rep_start      = 0;
+              ndlsch_SIB1->relative_sib1_frame = 0;
+                return -1;
+          }
+          //this is needed for ndlsch_procedure
+          else if(frameP == index)
+          {
+            //the actual frame is the start of a new repetition (SIB1-NB should be retransmitted)
+            ndlsch_SIB1->sib1_rep_start      = 1;
+            ndlsch_SIB1->relative_sib1_frame = 1;
+            return sib1_startFrame;
+          }
+          else
+            ndlsch_SIB1->sib1_rep_start = 0;
+
+          //check in the current SIB1_NB repetition
+          if(frameP>= index && frameP <= (index+15))
+          {
+            //find if the actual frame is one of the "every other frame in 16 continuous frame" in which SIB1-NB is transmitted
+
+            for(int y = 0; y < 16; y += 2) //every other frame (increment by 2)
+            {
+              if(frameP == index + y)
+              {
+                //this flag tell which is the number of the current frame w.r.t the 8th (over the continuous 16) in a repetition
+                ndlsch_SIB1->relative_sib1_frame = y/2 + 1; //1st, 2nd, 3rd,...
+                return sib1_startFrame;
+              }
+            }
+
+            //if we are here means that the frame was inside the repetition interval but not considered for SIB1-NB transmission
+            ndlsch_SIB1->relative_sib1_frame = 0;
+            return -1;
+         }
+
+        }
+
+        return -1;
+}
 
-#ifdef DIAG_PHY
-extern int rx_sig_fifo;
-#endif
 
-*/
 
 
 

openair2/RRC/LITE/proto_NB_IoT.h

@@ -64,63 +64,7 @@ RRC_status_t rrc_rx_tx_NB_IoT(protocol_ctxt_t* const ctxt_pP, const uint8_t  enb
 //long binary_search_float(float elements[], long numElem, float value);--> used only at UE side
 
 
-//----------------------------------------
-
-//New
-/**\brief function for evaluate if the SIB1-NB transmission occur
- * return the SIB1 starting frame
- * called by phy_procedure_eNB_Tx before calling the npdsch_procedure
- */
-uint32_t is_SIB1_NB_IoT(
-		const frame_t    	frameP,
-		long					  schedulingInfoSIB1,//from the mib
-		int						  physCellId, //by configuration
-		NB_IoT_eNB_NDLSCH_t	*ndlsch_SIB1
-		);
-//--------------------------------------
 
-//New
-/**\brief function for evaluate if the SIB1-NB period start
- * return 0 = TRUE
- * return -1 = FALSE
- * called by the NB_mac_rrc_data_req
- */
-uint8_t is_SIB1_start_NB_IoT(
-		const frame_t    		frameP,
-		long					schedulingInfoSIB1,//from the mib
-		int						physCellId //by configuration
-		);
-
-
-//New
-/**\brief function for evaluate if the SIB23-NB transmission occurr
- * called by the NB_mac_rrc_data_req
- *
- */
-boolean_t is_SIB23_NB_IoT(
-		const frame_t     	frameP,
-		const frame_t		h_frameP, // the HSFN (increased by 1 every SFN wrap around) (10 bits)
-		long				si_period, //SI-periodicity (rf)
-		long				si_windowLength_ms, //Si-windowlength (ms) XXX received as an enumerative (see the IE of SIB1-NB)
-		long*				si_RadioFrameOffset, //Optional
-		long				si_RepetitionPattern // is given as an Enumerated
-		);
-//-----------------------------------
-
-
-//defined in L2_interface
-int8_t mac_rrc_data_req_eNB_NB_IoT(
-  const module_id_t Mod_idP,
-  const int         CC_id,
-  const frame_t     frameP,
-  const frame_t		h_frameP,
-  const sub_frame_t   subframeP,
-  const rb_id_t     Srb_id,
-  uint8_t*    const buffer_pP,
-  long				schedulingInfoSIB1,//from the mib
-  int				physCellId, //from the MAC instance-> common_channel
-  mib_flag_t		mib_flag
-);
 //---------------------------------------
 
 
@@ -550,16 +494,15 @@ uint8_t rrc_eNB_get_next_transaction_identifier_NB_IoT(module_id_t module_idP);
 int rrc_init_global_param_NB_IoT(void);
 
 //L2_interface.c
-int8_t mac_rrc_data_req_NB_IoT(
+int8_t mac_rrc_data_req_eNB_NB_IoT(
   const module_id_t Mod_idP,
   const int         CC_id,
   const frame_t     frameP,
+  const frame_t   h_frameP,
+  const sub_frame_t   subframeP, //need for the case in which both SIB1-NB_IoT and SIB23-NB_IoT will be scheduled in the same frame
   const rb_id_t     Srb_id,
-  const uint8_t     Nb_tb,
-  uint8_t*    const buffer_pP,
-  const eNB_flag_t  enb_flagP,
-  const uint8_t     eNB_index,
-  const uint8_t     mbsfn_sync_area
+  uint8_t* const buffer_pP,
+  uint8_t   flag
 );