creation of new MAC_xface for NB-IoT (MAC_xface_NB_IoT)

+ creation of new file :openair2/PHY_INTERFACE/defs_NB_IoT.h
+ additional warnings because of the new MAC_xface_NB_IoT (126 remaining)

openair1/PHY/LTE_TRANSPORT/dci_tools_NB_IoT.c

@@ -380,6 +380,7 @@ int generate_eNB_dlsch_params_from_dci_NB_IoT(PHY_VARS_eNB_NB_IoT      *eNB,
 
 uint8_t subframe2harq_pid_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,uint32_t frame,uint8_t subframe)
 {
+  MAC_xface_NB_IoT *mac_xface_NB_IoT; //test_xface
   /*
     #ifdef DEBUG_DCI
     if (frame_parms->frame_type == TDD)
@@ -424,7 +425,7 @@ uint8_t subframe2harq_pid_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,uint32_t fra
     case 2:
       if ((subframe!=2) && (subframe!=7)) {
         LOG_E(PHY,"subframe2_harq_pid, Illegal subframe %d for TDD mode %d\n",subframe,frame_parms->tdd_config);
-        mac_xface->macphy_exit("subframe2_harq_pid_NB_IoT, Illegal subframe");
+        mac_xface_NB_IoT->macphy_exit("subframe2_harq_pid_NB_IoT, Illegal subframe");
         ret = (255);
       }
 
@@ -467,7 +468,7 @@ uint8_t subframe2harq_pid_NB_IoT(NB_IoT_DL_FRAME_PARMS *frame_parms,uint32_t fra
 
   if (ret == 255) {
     LOG_E(PHY, "invalid harq_pid(%d) at SFN/SF = %d/%d\n", ret, frame, subframe);
-    mac_xface->macphy_exit("invalid harq_pid");
+    mac_xface_NB_IoT->macphy_exit("invalid harq_pid");
   }
   return ret;
 }

openair1/PHY/LTE_TRANSPORT/ulsch_decoding_NB_IoT.c

@@ -42,7 +42,7 @@
 /*
 #ifdef OPENAIR2
 #include "LAYER2/MAC/defs.h"
-#include "LAYER2/MAC/extern.h"
+#include "LAYER2/MAC/extern_NB_IoT.h"
 #include "RRC/LITE/extern.h"
 #include "PHY_INTERFACE/extern.h"
 #endif
@@ -932,6 +932,8 @@ unsigned int  ulsch_decoding_NB_IoT(PHY_VARS_eNB_NB_IoT     *eNB,
                                     uint8_t                 Nbundled,
                                     uint8_t                 llr8_flag)
 {
+  MAC_xface_NB_IoT *mac_xface_NB_IoT;  //test_xface
+
   int16_t                 *ulsch_llr    = eNB->pusch_vars[UE_id]->llr;
   NB_IoT_DL_FRAME_PARMS   *frame_parms  = &eNB->frame_parms;
   NB_IoT_eNB_ULSCH_t      *ulsch        = eNB->ulsch[UE_id];
@@ -1042,7 +1044,7 @@ unsigned int  ulsch_decoding_NB_IoT(PHY_VARS_eNB_NB_IoT     *eNB,
           ulsch_harq->O_ACK,
           G,
           subframe);
-    mac_xface->macphy_exit("ulsch_decoding.c: FATAL sumKr is 0!");
+    mac_xface_NB_IoT->macphy_exit("ulsch_decoding.c: FATAL sumKr is 0!");
     return(-1);
   }
   // Compute Q_ri

openair1/PHY/defs.h

@@ -129,7 +129,7 @@ static inline void* malloc16_clear( size_t size )
 #ifdef OPENAIR_LTE
 
 #include "PHY/LTE_TRANSPORT/defs.h"
-#include "PHY/LTE_TRANSPORT/defs_NB_IoT.h"
+//#include "PHY/LTE_TRANSPORT/defs_NB_IoT.h"
 #include <pthread.h>
 
 #include "targets/ARCH/COMMON/common_lib.h"
@@ -570,7 +570,7 @@ typedef struct PHY_VARS_eNB_s {
   struct PhysicalConfigDedicated *physicalConfigDedicated[NUMBER_OF_UE_MAX];
 
   //Pointers for actve physicalConfigDedicated for NB-IoT to be applied in current subframe
-  struct PhysicalConfigDedicated_NB_r13 *phy_config_dedicated_NB[NUMBER_OF_UE_MAX];
+  //struct PhysicalConfigDedicated_NB_r13 *phy_config_dedicated_NB[NUMBER_OF_UE_MAX];
 
 
   uint32_t rb_mask_ul[4];

openair1/PHY/extern_NB_IoT.h

@@ -24,7 +24,7 @@
 
 //#include "PHY/defs.h"
 #include "PHY/defs_NB_IoT.h"
-#include "openair2/PHY_INTERFACE/defs.h"
+#include "openair2/PHY_INTERFACE/defs_NB_IoT.h"
 //#include "PHY_INTERFACE/IF_Module_NB_IoT.h"
 /*
 extern  char* namepointer_chMag ;
@@ -55,7 +55,7 @@ extern PHY_VARS_eNB_NB_IoT * PHY_vars_eNB_NB_IoT_g[MAX_eNB_NB_IoT][MAX_NUM_CCs];
 #endif
 
 
-extern MAC_xface *mac_xface;
+extern MAC_xface_NB_IoT *mac_xface_NB_IoT;
 /*
 extern IF_Module_t *if_inst;
 

openair1/PHY/impl_defs_lte_NB_IoT.h

@@ -38,6 +38,7 @@
 
 typedef enum {TDD_NB_IoT=1,FDD_NB_IoT=0} NB_IoT_frame_type_t;
 typedef enum {EXTENDED_NB_IoT=1,NORMAL_NB_IoT=0} NB_IoT_prefix_type_t;
+typedef enum {SF_DL_NB_IoT, SF_UL_NB_IoT, SF_S_NB_IoT} NB_IoT_subframe_t;
 
 #define	A_SEQUENCE_OF(type)	A_SET_OF(type)
 

openair1/SCHED/defs_NB_IoT.h

@@ -38,6 +38,8 @@ void phy_procedures_eNB_TX_NB_IoT(PHY_VARS_eNB_NB_IoT *eNB,eNB_rxtx_proc_NB_IoT_
 
 int8_t find_ue_NB_IoT(uint16_t rnti, PHY_VARS_eNB_NB_IoT *eNB);
 
+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);
 
 #endif

openair1/SCHED/phy_procedures_lte_common_NB_IoT.c

@@ -11,7 +11,7 @@
 * \warning
 */
 #include "PHY/defs_NB_IoT.h"
-//#include "PHY/extern_NB_IoT.h"
+#include "PHY/extern_NB_IoT.h"
 //#include "SCHED/defs_nb_iot.h"
 //#include "SCHED/extern.h"
 
@@ -1108,7 +1108,12 @@ int8_t find_ue_NB_IoT(uint16_t rnti, PHY_VARS_eNB_NB_IoT *eNB)
   return(-1);
 }
 
+NB_IoT_DL_FRAME_PARMS* get_NB_IoT_frame_parms(module_id_t Mod_id, uint8_t  CC_id)
+{
+
+  return(&PHY_vars_eNB_NB_IoT_g[Mod_id][CC_id]->frame_parms);
 
+}
 
 /*
 

openair2/LAYER2/MAC/defs_NB_IoT.h

@@ -337,6 +337,16 @@ typedef struct {
   eNB_UE_STATS_NB_IoT eNB_UE_stats[MAX_NUM_CCs][NUMBER_OF_UE_MAX_NB_IoT];
   /// scheduling control info
   UE_sched_ctrl_NB_IoT UE_sched_ctrl[NUMBER_OF_UE_MAX_NB_IoT];
+
+  /// sorted downlink component carrier for the scheduler 
+  int ordered_CCids[MAX_NUM_CCs][NUMBER_OF_UE_MAX_NB_IoT];
+  /// number of downlink active component carrier 
+  int numactiveCCs[NUMBER_OF_UE_MAX_NB_IoT];
+  /// sorted uplink component carrier for the scheduler 
+  int ordered_ULCCids[MAX_NUM_CCs][NUMBER_OF_UE_MAX_NB_IoT];
+  /// number of uplink active component carrier 
+  int numactiveULCCs[NUMBER_OF_UE_MAX_NB_IoT];
+
   int next[NUMBER_OF_UE_MAX_NB_IoT];
   int head;
   int next_ul[NUMBER_OF_UE_MAX_NB_IoT];
@@ -346,6 +356,16 @@ typedef struct {
   boolean_t active[NUMBER_OF_UE_MAX_NB_IoT];
 } UE_list_NB_IoT_t;
 
+/*!\brief MCCH logical channel */
+#define MCCH_NB_IoT 4 
+/*!\brief The power headroom reporting range is from -23 ...+40 dB and beyond, with step 1 */
+#define PHR_MAPPING_OFFSET_NB_IoT 23  // if ( x>= -23 ) val = floor (x + 23) 
+/*!\brief Values of BCCH logical channel */
+#define BCCH_NB_IoT 3  // SI 
+/*!\brief Value of CCCH / SRB0 logical channel */
+#define CCCH_NB_IoT 0  // srb0
+/*!\brief DCCH / SRB1 logical channel */
+#define DCCH_NB_IoT 1  // srb1
 /*!\brief Values of BCCH0 logical channel for MIB*/
 #define BCCH0_NB_IoT 11 // MIB-NB
 /*!\brief Values of BCCH1 logical channel for SIBs */
@@ -364,12 +384,35 @@ typedef struct {
 #define DTCH1_NB_IoT 5 // DRB1
 /*!\brief size of buffer status report table */
 #define BSR_TABLE_SIZE_NB_IoT 64
+/*!\brief LCID of short BSR for ULSCH */
+#define SHORT_BSR_NB_IoT 29
+/*!\brief LCID of CRNTI for ULSCH */
+#define CRNTI_NB_IoT 27
+/*!\brief Maximum number od control elemenets */
+#define MAX_NUM_CE_NB_IoT 5
+/*!\brief LCID of power headroom for ULSCH */
+#define POWER_HEADROOM_NB_IoT 26
+/*!\brief LCID of extended power headroom for ULSCH */
+#define EXTENDED_POWER_HEADROOM_NB_IoT 25
+/*!\brief LCID of padding LCID for DLSCH */
+#define SHORT_PADDING_NB_IoT 31
+/*!\brief LCID of long BSR for ULSCH */
+#define LONG_BSR_NB_IoT 30
+/*!\brief LCID of truncated BSR for ULSCH */
+#define TRUNCATED_BSR_NB_IoT 28
+
 // DLSCH LCHAN ID all the same as NB-IoT
 /*!\brief  DCI PDU filled by MAC for the PHY  */
 /* 
  * eNB part 
  */ 
-
+/*!\brief UE layer 2 status */
+typedef enum {
+  CONNECTION_OK_NB_IoT=0,
+  CONNECTION_LOST_NB_IoT,
+  PHY_RESYNCH_NB_IoT,
+  PHY_HO_PRACH_NB_IoT
+} UE_L2_STATE_NB_IoT_t;
 
 /* 
  * UE/ENB common part 
@@ -442,6 +485,8 @@ typedef struct {
 typedef struct {
   uint8_t payload[CCCH_PAYLOAD_SIZE_MAX_NB_IoT] ;
 } __attribute__((__packed__))CCCH_PDU_NB_IoT;
+
+
 /*! \brief eNB template for the Random access information */
 typedef struct {
   /// Flag to indicate this process is active
@@ -624,4 +669,137 @@ typedef struct {
   /// processing time of eNB ULSCH reception
   time_stats_t rx_ulsch_sdu; // include rlc_data_ind
 } eNB_MAC_INST_NB_IoT;
+
+/*!\brief Top level UE MAC structure */
+typedef struct {
+  uint16_t Node_id;
+  /// RX frame counter
+  frame_t     rxFrame;
+  /// RX subframe counter
+  sub_frame_t rxSubframe;
+  /// TX frame counter
+  frame_t     txFrame;
+  /// TX subframe counter
+  sub_frame_t txSubframe;
+  /// C-RNTI of UE
+  uint16_t crnti;
+  /// C-RNTI of UE before HO
+  rnti_t crnti_before_ho; ///user id (rnti) of connected UEs
+  /// uplink active flag
+  uint8_t ul_active;
+  /// pointer to RRC PHY configuration
+  RadioResourceConfigCommonSIB_t *radioResourceConfigCommon;
+  /// pointer to RACH_ConfigDedicated (NULL when not active, i.e. upon HO completion or T304 expiry)
+  struct RACH_ConfigDedicated *rach_ConfigDedicated;
+  /// pointer to RRC PHY configuration
+  struct PhysicalConfigDedicated *physicalConfigDedicated;
+#if defined(Rel10) || defined(Rel14)
+  /// pointer to RRC PHY configuration SCEll
+  struct PhysicalConfigDedicatedSCell_r10 *physicalConfigDedicatedSCell_r10;
+#endif
+  /// pointer to TDD Configuration (NULL for FDD)
+  TDD_Config_t *tdd_Config;
+  /// Number of adjacent cells to measure
+  uint8_t  n_adj_cells;
+  /// Array of adjacent physical cell ids
+  uint32_t adj_cell_id[6];
+  /// Pointer to RRC MAC configuration
+  MAC_MainConfig_t *macConfig;
+  /// Pointer to RRC Measurement gap configuration
+  MeasGapConfig_t  *measGapConfig;
+  /// Pointers to LogicalChannelConfig indexed by LogicalChannelIdentity. Note NULL means LCHAN is inactive.
+  //////////////////////////////////////////////////////LogicalChannelConfig_t *logicalChannelConfig[MAX_NUM_LCID];
+  /// Scheduling Information
+  /////////////////////////////////////////////UE_SCHEDULING_INFO_NB_IoT scheduling_info;
+  /// Outgoing CCCH pdu for PHY
+  CCCH_PDU_NB_IoT CCCH_pdu;
+  /// Incoming DLSCH pdu for PHY
+  //DLSCH_PDU DLSCH_pdu[NUMBER_OF_UE_MAX][2];
+  /// number of attempt for rach
+  uint8_t RA_attempt_number;
+  /// Random-access procedure flag
+  uint8_t RA_active;
+  /// Random-access window counter
+  int8_t RA_window_cnt;
+  /// Random-access Msg3 size in bytes
+  uint8_t RA_Msg3_size;
+  /// Random-access prachMaskIndex
+  uint8_t RA_prachMaskIndex;
+  /// Flag indicating Preamble set (A,B) used for first Msg3 transmission
+  uint8_t RA_usedGroupA;
+  /// Random-access Resources
+  /////////////////////////////////////////////////////////////////////PRACH_RESOURCES_NB_IoT_t RA_prach_resources;
+  /// Random-access PREAMBLE_TRANSMISSION_COUNTER
+  uint8_t RA_PREAMBLE_TRANSMISSION_COUNTER;
+  /// Random-access backoff counter
+  int16_t RA_backoff_cnt;
+  /// Random-access variable for window calculation (frame of last change in window counter)
+  uint32_t RA_tx_frame;
+  /// Random-access variable for window calculation (subframe of last change in window counter)
+  uint8_t RA_tx_subframe;
+  /// Random-access Group B maximum path-loss
+  /// Random-access variable for backoff (frame of last change in backoff counter)
+  uint32_t RA_backoff_frame;
+  /// Random-access variable for backoff (subframe of last change in backoff counter)
+  uint8_t RA_backoff_subframe;
+  /// Random-access Group B maximum path-loss
+  uint16_t RA_maxPL;
+  /// Random-access Contention Resolution Timer active flag
+  uint8_t RA_contention_resolution_timer_active;
+  /// Random-access Contention Resolution Timer count value
+  uint8_t RA_contention_resolution_cnt;
+  /// power headroom reporitng reconfigured
+  uint8_t PHR_reconfigured;
+  /// power headroom state as configured by the higher layers
+  uint8_t PHR_state;
+  /// power backoff due to power management (as allowed by P-MPRc) for this cell
+  uint8_t PHR_reporting_active;
+  /// power backoff due to power management (as allowed by P-MPRc) for this cell
+  uint8_t power_backoff_db[NUMBER_OF_eNB_MAX];
+  /// BSR report falg management
+  uint8_t BSR_reporting_active;
+  /// retxBSR-Timer expires flag
+  uint8_t retxBSRTimer_expires_flag;
+  /// periodBSR-Timer expires flag
+  uint8_t periodBSRTimer_expires_flag;
+
+  /// MBSFN_Subframe Configuration
+  struct MBSFN_SubframeConfig *mbsfn_SubframeConfig[8]; // FIXME replace 8 by MAX_MBSFN_AREA?
+  /// number of subframe allocation pattern available for MBSFN sync area
+  uint8_t num_sf_allocation_pattern;
+// #if defined(Rel10) || defined(Rel14)
+//   /// number of active MBSFN area
+//   uint8_t num_active_mbsfn_area;
+//   /// MBSFN Area Info
+//   struct  MBSFN_AreaInfo_r9 *mbsfn_AreaInfo[MAX_MBSFN_AREA];
+//   /// PMCH Config
+//   struct PMCH_Config_r9 *pmch_Config[MAX_PMCH_perMBSFN];
+//   /// MCCH status
+//   uint8_t mcch_status;
+//   /// MSI status
+//   uint8_t msi_status;// could be an array if there are >1 MCH in one MBSFN area
+// #endif
+  //#ifdef CBA
+  /// CBA RNTI for each group 
+  uint16_t cba_rnti[NUM_MAX_CBA_GROUP];
+  /// last SFN for CBA channel access 
+  uint8_t cba_last_access[NUM_MAX_CBA_GROUP];
+  //#endif
+  /// total UE scheduler processing time 
+  time_stats_t ue_scheduler; // total
+  /// UE ULSCH tx  processing time inlcuding RLC interface (rlc_data_req) and mac header generation 
+  time_stats_t tx_ulsch_sdu;  
+  /// UE DLSCH rx  processing time inlcuding RLC interface (mac_rrc_data_ind or mac_rlc_status_ind+mac_rlc_data_ind) and mac header parser
+  time_stats_t rx_dlsch_sdu ; 
+  /// UE query for MCH subframe processing time 
+  time_stats_t ue_query_mch;
+  /// UE MCH rx processing time 
+  time_stats_t rx_mch_sdu;
+  /// UE BCCH rx processing time including RLC interface (mac_rrc_data_ind) 
+  time_stats_t rx_si; 
+  /// UE PCCH rx processing time including RLC interface (mac_rrc_data_ind) 
+  time_stats_t rx_p; 
+} UE_MAC_INST_NB_IoT;
+
+
 #endif /*__LAYER2_MAC_DEFS_NB_IoT_H__ */

openair2/LAYER2/MAC/eNB_scheduler_RA_NB_IoT.c

@@ -48,7 +48,7 @@
 //#include "UTIL/OPT/opt.h"
 //#include "OCG.h"
 //#include "OCG_extern.h"
-
+#include "RRC/LITE/proto_NB_IoT.h"
 //#include "RRC/LITE/extern.h"
 //#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
 
@@ -90,7 +90,7 @@ void schedule_RA_NB_IoT(module_id_t module_idP,frame_t frameP, sub_frame_t subfr
 
     
 
-    for (i=0; i<NB_RA_PROC_MAX; i++) {
+    for (i=0; i<RA_PROC_MAX_NB_IoT; i++) {
 
       RA_template = (RA_TEMPLATE_NB_IoT *)&eNB->common_channels[CC_id].RA_template[i];
 
@@ -120,24 +120,24 @@ void schedule_RA_NB_IoT(module_id_t module_idP,frame_t frameP, sub_frame_t subfr
         else if (RA_template->generate_Msg4 == 1) {
 
           // check for Msg4 Message
-          UE_id = find_UE_id(module_idP,RA_template->rnti);
+          UE_id = find_UE_id_NB_IoT(module_idP,RA_template->rnti);
           if (UE_id == -1) { printf("%s:%d:%s: FATAL ERROR\n", __FILE__, __LINE__, __FUNCTION__); abort(); }
 
           if (Is_rrc_registered == 1) {//Fixed mac_rrc_data_req
 
             // Get RRCConnectionSetup for Piggyback
-            rrc_sdu_length = mac_rrc_data_req(module_idP,
-                                              CC_id,
-                                              frameP,
-                                              CCCH,
-                                              1, // 1 transport block
-                                              &eNB->common_channels[CC_id].CCCH_pdu.payload[0],
-                                              ENB_FLAG_YES,
-                                              module_idP,
-                                              0); // not used in this case
+            rrc_sdu_length = mac_rrc_data_req_NB_IoT(module_idP,
+                                                     CC_id,
+                                                     frameP,
+                                                     CCCH_NB_IoT,
+                                                     1, // 1 transport block
+                                                     &eNB->common_channels[CC_id].CCCH_pdu.payload[0],
+                                                     ENB_FLAG_YES,
+                                                     module_idP,
+                                                     0); // not used in this case
 
             if (rrc_sdu_length == -1) {
-              mac_xface->macphy_exit("[MAC][eNB Scheduler] CCCH not allocated\n");
+              mac_xface_NB_IoT->macphy_exit("[MAC][eNB Scheduler] CCCH not allocated\n");
               return; // not reached
             } else {
               //msg("[MAC][eNB %d] Frame %d, subframeP %d: got %d bytes from RRC\n",module_idP,frameP, subframeP,rrc_sdu_length);
@@ -188,7 +188,7 @@ void schedule_RA_NB_IoT(module_id_t module_idP,frame_t frameP, sub_frame_t subfr
   LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d: Checking if Msg4 was acknowledged: \n",
         module_idP,CC_id,frameP,subframeP);
   // Get candidate harq_pid from PHY
-  mac_xface->get_ue_active_harq_pid(module_idP,CC_id,RA_template->rnti,frameP,subframeP,&harq_pid,&round,openair_harq_RA_NB_IoT);
+  mac_xface_NB_IoT->get_ue_active_harq_pid(module_idP,CC_id,RA_template->rnti,frameP,subframeP,&harq_pid,&round,openair_harq_RA_NB_IoT);
   
   if (round>0) {
     //RA_template->wait_ack_Msg4++;
@@ -220,9 +220,9 @@ printf("MAC: msg4 acknowledged for rnti %x fsf %d/%d, let's configure it\n", RA_
     LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d, subframeP %d : Msg4 acknowledged\n",module_idP,CC_id,frameP,subframeP);
     RA_template->wait_ack_Msg4=0;
     RA_template->RA_active=FALSE;
-    UE_id = find_UE_id(module_idP,RA_template->rnti);
+    UE_id = find_UE_id_NB_IoT(module_idP,RA_template->rnti);
     DevAssert( UE_id != -1 );
-    eNB_mac_inst_NB_IoT[module_idP].UE_list.UE_template[UE_PCCID(module_idP,UE_id)][UE_id].configured=TRUE;
+    eNB_mac_inst_NB_IoT[module_idP].UE_list.UE_template[UE_PCCID_NB_IoT(module_idP,UE_id)][UE_id].configured=TRUE;
     
   }
   
@@ -246,7 +246,7 @@ void initiate_ra_proc_NB_IoT(module_id_t module_idP, int CC_id,frame_t frameP, u
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC,1);
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_INITIATE_RA_PROC,0);
   /*May up to 48 RA Procdeure MAX at the moment*/
-  for (i=0; i<NB_RA_PROC_MAX; i++) {
+  for (i=0; i<RA_PROC_MAX_NB_IoT; i++) {
     if (RA_template[i].RA_active==FALSE &&
         RA_template[i].wait_ack_Msg4 == 0) {
       int loop = 0;
@@ -263,7 +263,7 @@ void initiate_ra_proc_NB_IoT(module_id_t module_idP, int CC_id,frame_t frameP, u
                /* TODO: this is not correct, the rnti may be in use without
                 * being in the MAC yet. To be refined.
                 */
-               !(find_UE_id(module_idP, RA_template[i].rnti) == -1 &&
+               !(find_UE_id_NB_IoT(module_idP, RA_template[i].rnti) == -1 &&
                  /* 1024 and 60000 arbirarily chosen, not coming from standard */
                  RA_template[i].rnti >= 1024 && RA_template[i].rnti < 60000));
       if (loop == 100) { printf("%s:%d:%s: FATAL ERROR! contact the authors\n", __FILE__, __LINE__, __FUNCTION__); abort(); }

openair2/LAYER2/MAC/eNB_scheduler_primitives_NB_IoT.c

@@ -45,7 +45,7 @@
 //#include "UTIL/OPT/opt.h"
 //#include "OCG.h"
 //#include "OCG_extern.h"
-
+#include "RRC/LITE/proto_NB_IoT.h"
 //#include "RRC/LITE/extern.h"
 //#include "RRC/L2_INTERFACE/openair_rrc_L2_interface.h"
 //NB-IoT
@@ -108,6 +108,49 @@ rnti_t UE_RNTI_NB_IoT(module_id_t mod_idP, int ue_idP)
   return(NOT_A_RNTI);
 }
 
+int add_new_ue_NB_IoT(module_id_t mod_idP, int cc_idP, rnti_t rntiP,int harq_pidP)
+{
+  int UE_id;
+  int i, j;
+
+  UE_list_NB_IoT_t *UE_list = &eNB_mac_inst_NB_IoT[mod_idP].UE_list;
+
+  LOG_D(MAC,"[eNB %d, CC_id %d] Adding UE with rnti %x (next avail %d, num_UEs %d)\n",mod_idP,cc_idP,rntiP,UE_list->avail,UE_list->num_UEs);
+  dump_ue_list_NB_IoT(UE_list,0);
+
+  for (i = 0; i < NUMBER_OF_UE_MAX_NB_IoT; i++) {
+    if (UE_list->active[i] == TRUE) continue;
+printf("MAC: new UE id %d rnti %x\n", i, rntiP);
+    UE_id = i;
+    UE_list->UE_template[cc_idP][UE_id].rnti       = rntiP;
+    UE_list->UE_template[cc_idP][UE_id].configured = FALSE;
+    UE_list->numactiveCCs[UE_id]                   = 1;
+    UE_list->numactiveULCCs[UE_id]                 = 1;
+    UE_list->pCC_id[UE_id]                         = cc_idP;
+    UE_list->ordered_CCids[0][UE_id]               = cc_idP;
+    UE_list->ordered_ULCCids[0][UE_id]             = cc_idP;
+    UE_list->num_UEs++;
+    UE_list->active[UE_id]                         = TRUE;
+    memset((void*)&UE_list->UE_sched_ctrl[UE_id],0,sizeof(UE_sched_ctrl_NB_IoT));
+
+    for (j=0; j<8; j++) {
+      UE_list->UE_template[cc_idP][UE_id].oldNDI[j]    = (j==0)?1:0;   // 1 because first transmission is with format1A (Msg4) for harq_pid 0
+      UE_list->UE_template[cc_idP][UE_id].oldNDI_UL[j] = (j==harq_pidP)?0:1; // 1st transmission is with Msg3;
+    }
+
+    eNB_ulsch_info_NB_IoT[mod_idP][cc_idP][UE_id].status = S_UL_WAITING_NB_IoT;
+    eNB_dlsch_info_NB_IoT[mod_idP][cc_idP][UE_id].status = S_DL_WAITING_NB_IoT;
+    LOG_D(MAC,"[eNB %d] Add UE_id %d on Primary CC_id %d: rnti %x\n",mod_idP,UE_id,cc_idP,rntiP);
+    dump_ue_list_NB_IoT(UE_list,0);
+    return(UE_id);
+  }
+
+printf("MAC: cannot add new UE for rnti %x\n", rntiP);
+  LOG_E(MAC,"error in add_new_ue(), could not find space in UE_list, Dumping UE list\n");
+  dump_ue_list_NB_IoT(UE_list,0);
+  return(-1);
+}
+
 //--------------------------------------------------------------------------------------------------------
 int rrc_mac_remove_ue_NB_IoT(
 		module_id_t mod_idP,
@@ -154,7 +197,7 @@ printf("MAC: remove UE %d rnti %x\n", UE_id, rntiP);
 
   // check if this has an RA process active
   RA_TEMPLATE_NB_IoT *RA_template;
-  for (i=0;i<NB_RA_PROC_MAX;i++) {
+  for (i=0;i<RA_PROC_MAX_NB_IoT;i++) {
     RA_template = (RA_TEMPLATE_NB_IoT *)&eNB_mac_inst_NB_IoT[mod_idP].common_channels[pCC_id].RA_template[i];
     if (RA_template->rnti == rntiP){
       RA_template->RA_active=FALSE;

openair2/LAYER2/MAC/eNB_scheduler_ulsch_NB_IoT.c

@@ -65,6 +65,78 @@
 
 #define ENABLE_MAC_PAYLOAD_DEBUG
 //#define DEBUG_eNB_SCHEDULER 1
+unsigned char *parse_ulsch_header_NB_IoT(unsigned char *mac_header,
+                                         unsigned char *num_ce,
+                                         unsigned char *num_sdu,
+                                         unsigned char *rx_ces,
+                                         unsigned char *rx_lcids,
+                                         unsigned short *rx_lengths,
+                                         unsigned short tb_length)
+{
+  //MAC_xface_NB_IoT *mac_xface_NB_IoT; //test_xface
+
+  unsigned char not_done=1,num_ces=0,num_sdus=0,lcid,num_sdu_cnt;
+  unsigned char *mac_header_ptr = mac_header;
+  unsigned short length, ce_len=0;
+
+  while (not_done==1) {
+
+    if (((SCH_SUBHEADER_FIXED_NB_IoT*)mac_header_ptr)->E == 0) {
+      not_done = 0;
+    }
+
+    lcid = ((SCH_SUBHEADER_FIXED_NB_IoT *)mac_header_ptr)->LCID;
+
+    if (lcid < EXTENDED_POWER_HEADROOM_NB_IoT) {
+      if (not_done==0) { // last MAC SDU, length is implicit
+        mac_header_ptr++;
+        length = tb_length-(mac_header_ptr-mac_header)-ce_len;
+
+        for (num_sdu_cnt=0; num_sdu_cnt < num_sdus ; num_sdu_cnt++) {
+          length -= rx_lengths[num_sdu_cnt];
+        }
+      } else {
+        if (((SCH_SUBHEADER_SHORT_NB_IoT *)mac_header_ptr)->F == 0) {
+          length = ((SCH_SUBHEADER_SHORT_NB_IoT *)mac_header_ptr)->L;
+          mac_header_ptr += 2;//sizeof(SCH_SUBHEADER_SHORT);
+        } else { // F = 1
+          length = ((((SCH_SUBHEADER_LONG_NB_IoT *)mac_header_ptr)->L_MSB & 0x7f ) << 8 ) | (((SCH_SUBHEADER_LONG_NB_IoT *)mac_header_ptr)->L_LSB & 0xff);
+          mac_header_ptr += 3;//sizeof(SCH_SUBHEADER_LONG);
+        }
+      }
+
+      LOG_D(MAC,"[eNB] sdu %d lcid %d tb_length %d length %d (offset now %ld)\n",
+            num_sdus,lcid,tb_length, length,mac_header_ptr-mac_header);
+      rx_lcids[num_sdus] = lcid;
+      rx_lengths[num_sdus] = length;
+      num_sdus++;
+    } else { // This is a control element subheader POWER_HEADROOM, BSR and CRNTI
+      if (lcid == SHORT_PADDING_NB_IoT) {
+        mac_header_ptr++;
+      } else {
+        rx_ces[num_ces] = lcid;
+        num_ces++;
+        mac_header_ptr++;
+
+        if (lcid==LONG_BSR_NB_IoT) {
+          ce_len+=3;
+        } else if (lcid==CRNTI_NB_IoT) {
+          ce_len+=2;
+        } else if ((lcid==POWER_HEADROOM_NB_IoT) || (lcid==TRUNCATED_BSR_NB_IoT)|| (lcid== SHORT_BSR_NB_IoT)) {
+          ce_len++;
+        } else {
+          LOG_E(MAC,"unknown CE %d \n", lcid);
+          mac_xface_NB_IoT->macphy_exit("unknown CE");
+        }
+      }
+    }
+  }
+
+  *num_ce = num_ces;
+  *num_sdu = num_sdus;
+
+  return(mac_header_ptr);
+}
 
 
 void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
@@ -78,7 +150,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
       )
 {
 
-  unsigned char  rx_ces[MAX_NUM_CE],num_ce,num_sdu,i,*payload_ptr;
+  unsigned char  rx_ces[MAX_NUM_CE_NB_IoT],num_ce,num_sdu,i,*payload_ptr;
   unsigned char  rx_lcids[NB_RB_MAX];//for NB-IoT, NB_RB_MAX should be fixed to 5 (2 DRB+ 3SRB) 
   unsigned short rx_lengths[NB_RB_MAX];
   int    UE_id = find_UE_id_NB_IoT(enb_mod_idP,rntiP);
@@ -122,7 +194,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
   }
 
 
-  payload_ptr = parse_ulsch_header(sduP,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,sdu_lenP);
+  payload_ptr = parse_ulsch_header_NB_IoT(sduP,&num_ce,&num_sdu,rx_ces,rx_lcids,rx_lengths,sdu_lenP);
 
   T(T_ENB_MAC_UE_UL_PDU, T_INT(enb_mod_idP), T_INT(CC_idP), T_INT(rntiP), T_INT(frameP), T_INT(subframeP),
     T_INT(harq_pidP), T_INT(sdu_lenP), T_INT(num_ce), T_INT(num_sdu));
@@ -139,18 +211,18 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
       T_INT(rx_ces[i]));
     /*rx_ces = lcid in parse_ulsch_header() if not short padding*/
     switch (rx_ces[i]) { // implement and process BSR + CRNTI + PHR
-    case POWER_HEADROOM:
+    case POWER_HEADROOM_NB_IoT:
       if (UE_id != -1) {
-        UE_list->UE_template[CC_idP][UE_id].phr_info =  (payload_ptr[0] & 0x3f) - PHR_MAPPING_OFFSET;
+        UE_list->UE_template[CC_idP][UE_id].phr_info =  (payload_ptr[0] & 0x3f) - PHR_MAPPING_OFFSET_NB_IoT;
         LOG_D(MAC, "[eNB %d] CC_id %d MAC CE_LCID %d : Received PHR PH = %d (db)\n",
               enb_mod_idP, CC_idP, rx_ces[i], UE_list->UE_template[CC_idP][UE_id].phr_info);
         UE_list->UE_template[CC_idP][UE_id].phr_info_configured=1;
 	UE_list->UE_sched_ctrl[UE_id].phr_received = 1;
       }
-      payload_ptr+=sizeof(POWER_HEADROOM_CMD);
+      payload_ptr+=sizeof(POWER_HEADROOM_CMD_NB_IoT);
       break;
 
-    case CRNTI:
+    case CRNTI_NB_IoT:
       UE_id = find_UE_id_NB_IoT(enb_mod_idP,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1]);
       LOG_I(MAC, "[eNB %d] Frame %d, Subframe %d CC_id %d MAC CE_LCID %d (ce %d/%d): CRNTI %x (UE_id %d) in Msg3\n",
 	    frameP,subframeP,enb_mod_idP, CC_idP, rx_ces[i], i,num_ce,(((uint16_t)payload_ptr[0])<<8) + payload_ptr[1],UE_id);
@@ -171,7 +243,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
     //case TRUNCATED_BSR:
     /*DV lcid =???*/
     //case DATA_VOLUME_INDICATOR
-    case SHORT_BSR: {
+    case SHORT_BSR_NB_IoT: {
       uint8_t lcgid;
       lcgid = (payload_ptr[0] >> 6);
 
@@ -205,7 +277,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
       else {
 
       }
-      payload_ptr += 1;//sizeof(SHORT_BSR); // fixme
+      payload_ptr += 1;//sizeof(SHORT_BSR_NB_IoT); // fixme
     }
     break;
 
@@ -237,7 +309,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
             payload_ptr[0],payload_ptr[1],payload_ptr[2],payload_ptr[3],payload_ptr[4], payload_ptr[5], rntiP);
       VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC,1);
       VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_TERMINATE_RA_PROC,0);
-      for (ii=0; ii<NB_RA_PROC_MAX; ii++) {
+      for (ii=0; ii<RA_PROC_MAX_NB_IoT; ii++) {
         LOG_D(MAC,"[eNB %d][RAPROC] CC_id %d Checking proc %d : rnti (%x, %x), active %d\n",
               enb_mod_idP, CC_idP, ii,
               eNB->common_channels[CC_idP].RA_template[ii].rnti, rntiP,
@@ -253,8 +325,8 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
             LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d CCCH: Received Msg3: length %d, offset %ld\n",
                   enb_mod_idP,CC_idP,frameP,rx_lengths[i],payload_ptr-sduP);
 
-            if ((UE_id=add_new_ue(enb_mod_idP,CC_idP,eNB->common_channels[CC_idP].RA_template[ii].rnti,harq_pidP)) == -1 ) {
-              mac_xface->macphy_exit("[MAC][eNB] Max user count reached\n");
+            if ((UE_id=add_new_ue_NB_IoT(enb_mod_idP,CC_idP,eNB->common_channels[CC_idP].RA_template[ii].rnti,harq_pidP)) == -1 ) {
+              mac_xface_NB_IoT->macphy_exit("[MAC][eNB] Max user count reached\n");
 	      // kill RA procedure
             } else
               LOG_I(MAC,"[eNB %d][RAPROC] CC_id %d Frame %d Added user with rnti %x => UE %d\n",
@@ -274,7 +346,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
               frameP,
         	  subframeP,
               rntiP,
-              CCCH,
+              CCCH_NB_IoT,
               (uint8_t*)payload_ptr,
               rx_lengths[i]);
 
@@ -359,7 +431,7 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
 	    UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] -= rx_lengths[i];
 	  else
 	    UE_list->UE_template[CC_idP][UE_id].ul_buffer_info[UE_list->UE_template[CC_idP][UE_id].lcgidmap[rx_lcids[i]]] = 0;*/
-	  if ((rx_lengths[i] <SCH_PAYLOAD_SIZE_MAX) &&  (rx_lengths[i] > 0) ) {   // MAX SIZE OF transport block
+	  if ((rx_lengths[i] <SCH_PAYLOAD_SIZE_MAX_NB_IoT) &&  (rx_lengths[i] > 0) ) {   // MAX SIZE OF transport block
 
 	    mac_rlc_data_ind_NB_IoT(
 			     enb_mod_idP,
@@ -412,4 +484,28 @@ void rx_sdu_NB_IoT(const module_id_t enb_mod_idP,
 }
 }
 
+/* This function is called by PHY layer when it schedules some
+ * uplink for a random access message 3.
+ * The MAC scheduler has to skip the RBs used by this message 3
+ * (done below in schedule_ulsch).
+ */
+void set_msg3_subframe_NB_IoT(module_id_t Mod_id,
+                              int CC_id,
+                              int frame,
+                              int subframe,
+                              int rnti,
+                              int Msg3_frame,
+                              int Msg3_subframe)
+{
+  eNB_MAC_INST_NB_IoT *eNB=&eNB_mac_inst_NB_IoT[Mod_id];
+  int i;
+  for (i=0; i<RA_PROC_MAX_NB_IoT; i++) {
+    if (eNB->common_channels[CC_id].RA_template[i].RA_active == TRUE &&
+        eNB->common_channels[CC_id].RA_template[i].rnti == rnti) {
+      eNB->common_channels[CC_id].RA_template[i].Msg3_subframe = Msg3_subframe;
+      break;
+    }
+  }
+}
+
 

openair2/LAYER2/MAC/extern_NB_IoT.h

@@ -29,8 +29,8 @@
 
 */
 
-#ifndef __MAC_EXTERN_NB_IoT_H__
-#define __MAC_EXTERN_NB_IoT_H__
+#ifndef __MAC_EXTERN_NB_IOT_H__
+#define __MAC_EXTERN_NB_IOT_H__
 
 
 // #ifdef USER_MODE
@@ -42,7 +42,7 @@
 // #ifdef PHY_EMUL
 // //#include "SIMULATION/simulation_defs.h"
 // #endif //PHY_EMUL
-#include "PHY_INTERFACE/defs.h"  // should be replaced by PHY_INTERFACE/defs_NB_IoT.h (create MAC_xface for NB_IoT)
+#include "openair2/PHY_INTERFACE/defs_NB_IoT.h" 
 //#include "RRC/LITE/defs_NB_IoT.h"
 
 //#ifdef NB_IOT
@@ -78,8 +78,8 @@ extern eNB_DLSCH_INFO_NB_IoT eNB_dlsch_info_NB_IoT[NUMBER_OF_eNB_MAX][MAX_NUM_CC
 
 
 
-// //#ifndef USER_MODE
-extern MAC_xface *mac_xface;
+//#ifndef USER_MODE
+extern MAC_xface_NB_IoT *mac_xface_NB_IoT;
 // extern RRC_XFACE *Rrc_xface;
 
 extern uint8_t Is_rrc_registered;

openair2/LAYER2/MAC/main_NB_IoT.c

@@ -36,7 +36,6 @@
 #include "LAYER2/MAC/extern_NB_IoT.h"
 #include "RRC/LITE/proto_NB_IoT.h"
 
-
 int mac_init_global_param_NB_IoT(void)
 {
 
@@ -107,7 +106,7 @@ int mac_top_init_NB_IoT()
       LOG_I(MAC,"[MAC][MAIN] not enough memory for eNB \n");
       exit(1);
     } else {
-      LOG_D(MAC,"[MAIN] ALLOCATE %zu Bytes for %d eNB_MAC_INST @ %p\n",sizeof(eNB_MAC_INST),NB_eNB_INST,eNB_mac_inst_NB_IoT);
+      LOG_D(MAC,"[MAIN] ALLOCATE %zu Bytes for %d eNB_MAC_INST @ %p\n",sizeof(eNB_MAC_INST_NB_IoT),NB_eNB_INST,eNB_mac_inst_NB_IoT);
       bzero(eNB_mac_inst_NB_IoT,NB_eNB_INST*sizeof(eNB_MAC_INST_NB_IoT));
     }
   } else {
@@ -152,7 +151,7 @@ int mac_top_init_NB_IoT()
 
       RA_template = (RA_TEMPLATE_NB_IoT *)&eNB_mac_inst_NB_IoT[i].common_channels[CC_id].RA_template[0];
 
-      for (j=0; j<NB_RA_PROC_MAX; j++) {
+      for (j=0; j<RA_PROC_MAX_NB_IoT; j++) {
         size_bytes1 = sizeof(DCIN1_RAR_t);
         size_bytes2 = sizeof(DCIN1_t);
         size_bits1 = sizeof_DCIN1_RAR_t;

openair2/LAYER2/MAC/proto_NB_IoT.h

@@ -31,6 +31,7 @@
 #define __LAYER2_MAC_PROTO_NB_IoT_H__
 
 #include "openair1/PHY/LTE_TRANSPORT/defs_NB_IoT.h"
+#include "LAYER2/MAC/defs_NB_IoT.h"
 #include "COMMON/platform_types.h"
 /** \addtogroup _mac
  *  @{
@@ -75,4 +76,66 @@ int find_UE_id_NB_IoT (module_id_t module_idP, rnti_t rnti) ;
 int UE_PCCID_NB_IoT (module_id_t module_idP, int UE_id);
 rnti_t  UE_RNTI_NB_IoT (module_id_t module_idP, int UE_id);
 
+/*! \fn  UE_L2_state_t ue_scheduler(const module_id_t module_idP,const frame_t frameP, const sub_frame_t subframe, const lte_subframe_t direction,const uint8_t eNB_index)
+   \brief UE scheduler where all the ue background tasks are done.  This function performs the following:  1) Trigger PDCP every 5ms 2) Call RRC for link status return to PHY3) Perform SR/BSR procedures for scheduling feedback 4) Perform PHR procedures.
+\param[in] module_idP instance of the UE
+\param[in] rxFrame the RX frame number
+\param[in] rxSubframe the RX subframe number
+\param[in] txFrame the TX frame number
+\param[in] txSubframe the TX subframe number
+\param[in] direction  subframe direction
+\param[in] eNB_index  instance of eNB
+@returns L2 state (CONNETION_OK or CONNECTION_LOST or PHY_RESYNCH)
+*/
+UE_L2_STATE_NB_IoT_t ue_scheduler_NB_IoT(
+  const module_id_t module_idP,
+  const frame_t rxFrameP,
+  const sub_frame_t rxSubframe,
+  const frame_t txFrameP,
+  const sub_frame_t txSubframe,
+  const NB_IoT_subframe_t direction,
+  const uint8_t eNB_index,
+  const int CC_id);
+
+/* \brief Function used by PHY to inform MAC that an uplink is scheduled
+          for Msg3 in given subframe. This is used so that the MAC
+          scheduler marks as busy the RBs used by the Msg3.
+@param Mod_id        Instance ID of eNB
+@param CC_id         CC ID of eNB
+@param frame         current frame
+@param subframe      current subframe
+@param rnti          UE rnti concerned
+@param Msg3_frame    frame where scheduling takes place
+@param Msg3_subframe subframe where scheduling takes place
+*/
+void set_msg3_subframe_NB_IoT(module_id_t Mod_id,
+                      		  int CC_id,
+                       		  int frame,
+                       		  int subframe,
+                       		  int rnti,
+                       		  int Msg3_frame,
+                       		  int Msg3_subframe);
+
+/* \brief Parse header for UL-SCH.  This function parses the received UL-SCH header as described
+in 36-321 MAC layer specifications.  It returns the number of bytes used for the header to be used as an offset for the payload
+in the ULSCH buffer.
+@param mac_header Pointer to the first byte of the MAC header (UL-SCH buffer)
+@param num_ces Number of SDUs in the payload
+@param num_sdu Number of SDUs in the payload
+@param rx_ces Pointer to received CEs in the header
+@param rx_lcids Pointer to array of LCIDs (the order must be the same as the SDU length array)
+@param rx_lengths Pointer to array of SDU lengths
+@returns Pointer to payload following header
+*/
+uint8_t *parse_ulsch_header_NB_IoT(uint8_t *mac_header,
+                                   uint8_t *num_ce,
+                                   uint8_t *num_sdu,
+                                   uint8_t *rx_ces,
+                                   uint8_t *rx_lcids,
+                                   uint16_t *rx_lengths,
+                                   uint16_t tx_lenght);
+
+int add_new_ue_NB_IoT(module_id_t Mod_id, int CC_id, rnti_t rnti,int harq_pid);
+//void dump_ue_list_NB_IoT(UE_list_t *listP, int ul_flag);
+
 #endif

openair2/RRC/LITE/defs_NB_IoT.h

@@ -513,6 +513,9 @@ typedef struct {
   SRB_INFO_NB_IoT                          SI;
   SRB_INFO_NB_IoT                          Srb0;
 
+  uint8_t                           **MCCH_MESSAGE; //  probably not needed , but added to remove errors
+  uint8_t                           sizeof_MCCH_MESSAGE[8];// but added to remove errors
+  SRB_INFO_NB_IoT                          MCCH_MESS[8];// MAX_MBSFN_AREA
   /*future implementation TS 36.331 V14.2.1
   SystemInformationBlockType15_NB_r14_t     *sib15;
   SystemInformationBlockType20_NB_r14_t     *sib20;

openair2/RRC/LITE/proto_NB_IoT.h

@@ -581,4 +581,20 @@ int rrc_init_global_param_NB_IoT(void);
 
 uint32_t from_earfcn_NB_IoT(int eutra_bandP,uint32_t dl_earfcn, float m_dl);
 
-int32_t get_uldl_offset_NB_IoT(int eutra_band);
\ No newline at end of file
+int32_t get_uldl_offset_NB_IoT(int eutra_band);
+
+//L2_interface.c
+int8_t mac_rrc_data_req_NB_IoT(
+  const module_id_t Mod_idP,
+  const int         CC_id,
+  const frame_t     frameP,
+  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
+);
+
+
+

targets/RT/USER/lte-softmodem.c

@@ -51,7 +51,7 @@
 #include "LAYER2/MAC/proto.h"
 #include "RRC/LITE/vars.h"
 #include "PHY_INTERFACE/vars.h"
-#include "PHY_INTERFACE/defs_nb_iot.h"
+#include "PHY_INTERFACE/defs.h"
 
 #ifdef SMBV
 #include "PHY/TOOLS/smbv.h"