testing of Discovery transmission/reception

openair1/PHY/LTE_TRANSPORT/defs.h

@@ -252,7 +252,7 @@ typedef struct {
 
   // decode phich
   uint8_t decode_phich;
-} LTE_UL_UE_HARQ_t; 
+} LTE_UL_UE_HARQ_t;
 
 #ifdef Rel14
 typedef enum {
@@ -265,7 +265,7 @@ typedef struct {
   /// TX buffers for UE-spec transmission (antenna ports 5 or 7..14, prior to precoding)
   int32_t *txdataF[8];
   /// beamforming weights for UE-spec transmission (antenna ports 5 or 7..14), for each codeword, maximum 4 layers?
-  int32_t **ue_spec_bf_weights[4]; 
+  int32_t **ue_spec_bf_weights[4];
   /// dl channel estimates (estimated from ul channel estimates)
   int32_t **calib_dl_ch_estimates;
   /// Allocated RNTI (0 means DLSCH_t is not currently used)
@@ -413,7 +413,7 @@ typedef struct {
   /// is done after a new scheduling
   uint16_t previous_first_rb;
   /// Current Number of RBs
-  uint16_t nb_rb; 
+  uint16_t nb_rb;
   /// Current Modulation order
   uint8_t Qm;
   /// Transport block size
@@ -531,7 +531,7 @@ typedef enum {
   HARQ_SR,
   HARQ_CQI,
   SR_CQI,
-  HARQ_SR_CQI  
+  HARQ_SR_CQI
 } UCI_type_t;
 
 #ifdef Rel14
@@ -556,7 +556,7 @@ typedef struct {
   uint8_t     srs_active;
   /// PUCCH format to use
   PUCCH_FMT_t pucch_fmt;
-  /// number of PUCCH antenna ports 
+  /// number of PUCCH antenna ports
   uint8_t     num_antenna_ports;
   /// number of PUCCH resources
   uint8_t     num_pucch_resources;
@@ -878,7 +878,7 @@ typedef struct {
 
 typedef struct {
   // SL Configuration
-  /// Number of SL resource blocks (1-100) 
+  /// Number of SL resource blocks (1-100)
   uint32_t N_SL_RB;
   /// prb-start (0-99)
   uint32_t prb_Start;
@@ -911,7 +911,7 @@ typedef struct {
 
   // SLSCH Parameters
   /// Number of Subbands (36.213 14.1.1.2)
-  uint32_t Nsb; 
+  uint32_t Nsb;
   /// N_RB_HO (36.213 14.1.1.2)
   uint32_t N_RB_HO;
   /// n_ss_PSSCH (36.211 9.2.4)
@@ -930,17 +930,16 @@ typedef struct {
   uint32_t n_prime_PRB;
   /// m_nprime_PRB_PSSCH (36.213 14.1.3)
   uint32_t m_nprime_PRB_PSCCH;
-  /// payload length 
+  /// payload length
   int payload_length;
   /// pointer to payload
   uint8_t *payload;
 } SLSCH_t;
 
 typedef struct {
-  /// payload length 
+  /// payload length
   int payload_length;
-  /// pointer to payload
-  uint8_t *payload;
+	uint8_t payload[100];
 } SLDCH_t;
 
 #define TTI_SYNC 0
@@ -954,13 +953,13 @@ typedef struct UE_tport_header_s {
 } UE_tport_header_t;
 
 typedef struct UE_tport_s {
-  UE_tport_header_t header; 
+  UE_tport_header_t header;
   union {
     SLSS_t slss;
     SLDCH_t sldch;
     SLSCH_t slsch;
   };
-  uint8_t payload[1500];  
+  uint8_t payload[1500];
 } UE_tport_t;
 
 #endif

openair1/PHY/LTE_TRANSPORT/sldch.c

@@ -42,14 +42,13 @@ void generate_sldch(PHY_VARS_UE *ue,SLDCH_t *sldch,int frame_tx,int subframe_tx)
   pdu.header.packet_type = SLDCH;
   pdu.header.absSF = (frame_tx*10)+subframe_tx;
 
-  memcpy((void*)&pdu.sldch,(void*)sldch,sizeof(SLDCH_t)-sizeof(uint8_t*));
 
   AssertFatal(sldch->payload_length <=1500-sldch_header_len - sizeof(SLDCH_t) + sizeof(uint8_t*),
                 "SLDCH payload length > %d\n",
                 1500-sldch_header_len - sizeof(SLDCH_t) + sizeof(uint8_t*));
-  memcpy((void*)&pdu.payload[0],
-         (void*)sldch->payload,
-         sldch->payload_length);
+  memcpy((void*)&pdu.sldch,
+         (void*)sldch,
+         sizeof(SLDCH_t));
 
   LOG_I(PHY,"SLDCH configuration %d bytes, TBS payload %d bytes => %d bytes\n",
         sizeof(SLDCH_t)-sizeof(uint8_t*),
@@ -58,7 +57,7 @@ void generate_sldch(PHY_VARS_UE *ue,SLDCH_t *sldch,int frame_tx,int subframe_tx)
 
   multicast_link_write_sock(0,
                             &pdu,
-                            sldch_header_len+sizeof(SLDCH_t)-sizeof(uint8_t*)+sldch->payload_length);
+                            sldch_header_len+sizeof(SLDCH_t));
 
 }
 

openair2/LAYER2/MAC/ue_procedures.c

@@ -117,7 +117,7 @@ void ue_init_mac(module_id_t module_idP)
   UE_mac_inst[module_idP].scheduling_info.periodicBSR_SF  =  MAC_UE_BSR_TIMER_NOT_RUNNING;
   UE_mac_inst[module_idP].scheduling_info.retxBSR_SF     =  MAC_UE_BSR_TIMER_NOT_RUNNING;
   UE_mac_inst[module_idP].BSR_reporting_active = BSR_TRIGGER_NONE;
-  
+
   UE_mac_inst[module_idP].scheduling_info.periodicPHR_SF =  get_sf_perioidicPHR_Timer(UE_mac_inst[module_idP].scheduling_info.periodicPHR_Timer);
   UE_mac_inst[module_idP].scheduling_info.prohibitPHR_SF =  get_sf_prohibitPHR_Timer(UE_mac_inst[module_idP].scheduling_info.prohibitPHR_Timer);
   UE_mac_inst[module_idP].scheduling_info.PathlossChange_db =  get_db_dl_PathlossChange(UE_mac_inst[module_idP].scheduling_info.PathlossChange);
@@ -463,7 +463,7 @@ ue_send_sdu(
 #ifdef DEBUG_HEADER_PARSING
     LOG_D(MAC,"[UE] SDU %d : LCID %d, length %d\n",i,rx_lcids[i],rx_lengths[i]);
 #endif
-    
+
     if (rx_lcids[i] == CCCH) {
 
       LOG_D(MAC,"[UE %d] rnti %x Frame %d : DLSCH -> DL-CCCH, RRC message (eNB %d, %d bytes)\n",
@@ -506,9 +506,9 @@ ue_send_sdu(
                        rx_lengths[i],
                        1,
                        NULL);
- 
+
     } else if ((rx_lcids[i]  < NB_RB_MAX) && (rx_lcids[i] > DCCH1 )) {
-      
+
       LOG_D(MAC,"[UE %d] Frame %d : DLSCH -> DL-DTCH%d (eNB %d, %d bytes)\n", module_idP, frameP,rx_lcids[i], eNB_index,rx_lengths[i]);
 
 #if defined(ENABLE_MAC_PAYLOAD_DEBUG)
@@ -534,7 +534,7 @@ ue_send_sdu(
     payload_ptr+= rx_lengths[i];
   }
   } // end if (payload_ptr != NULL)
-  
+
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_UE_SEND_SDU, VCD_FUNCTION_OUT);
 #if UE_TIMING_TRACE
   stop_meas(&UE_mac_inst[module_idP].rx_dlsch_sdu);
@@ -1416,7 +1416,7 @@ void ue_get_sdu(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_t subf
   int highest_priority = 16;
   int num_lcg_id_with_data = 0;
   rlc_buffer_occupancy_t lcid_buffer_occupancy_old=0, lcid_buffer_occupancy_new=0;
-  
+
   LOG_D(MAC,"[UE %d] MAC PROCESS UL TRANSPORT BLOCK at frame%d subframe %d TBS=%d\n",
                         module_idP, frameP, subframe, buflen);
 
@@ -1919,7 +1919,7 @@ for (lcid=DCCH; (lcid < MAX_NUM_LCID) && (is_all_lcid_processed == FALSE) ; lcid
 #if UE_TIMING_TRACE
   stop_meas(&UE_mac_inst[module_idP].tx_ulsch_sdu);
 #endif
-  
+
 
   if (opt_enabled) {
     trace_pdu(0, ulsch_buffer, buflen, module_idP, 3, UE_mac_inst[module_idP].crnti, UE_mac_inst[module_idP].txFrame, UE_mac_inst[module_idP].txSubframe, 0, 0);
@@ -2118,9 +2118,9 @@ ue_scheduler(
 
 
       /*
-      if (lcid == DCCH) {    
-        LOG_D(MAC,"[UE %d][SR] Frame %d subframe %d Pending data for SRB1=%d for LCGID %d \n",                  
-        module_idP, txFrameP,txSubframeP,UE_mac_inst[module_idP].scheduling_info.BSR[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]],                  
+      if (lcid == DCCH) {
+        LOG_D(MAC,"[UE %d][SR] Frame %d subframe %d Pending data for SRB1=%d for LCGID %d \n",
+        module_idP, txFrameP,txSubframeP,UE_mac_inst[module_idP].scheduling_info.BSR[UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]],
 //         UE_mac_inst[module_idP].scheduling_info.LCGID[lcid]);
       }
       */
@@ -2748,24 +2748,27 @@ SLSS_t *ue_get_slss(module_id_t Mod_id,int CC_id,frame_t frame_tx,sub_frame_t su
 }
 
 SLDCH_t *ue_get_sldch(module_id_t Mod_id,int CC_id,frame_t frame_tx,sub_frame_t subframe_tx) {
-/*  int sdu_length;
+
     UE_MAC_INST *ue = &UE_mac_inst[Mod_id];
     SLDCH_t *sldch = &UE_mac_inst[Mod_id].sldch;
-   LOG_I(MAC, "[ue_get_sldch]");
-   int sdu_length = mac_rrc_data_req(Mod_id,
+
+    sldch->payload_length = mac_rrc_data_req(Mod_id,
             CC_id,
             frame_tx,
             SL_DISCOVERY,
             1,
-            (char*)(ue->sldch_pdu.payload), //&UE_mac_inst[Mod_id].SL_Discovery[0].Tx_buffer.Payload[0],
+            (char*)(sldch->payload), //&UE_mac_inst[Mod_id].SL_Discovery[0].Tx_buffer.Payload[0],
             0,
             0, //eNB_indexP
             0);
 
 
-   if (sdu_length >0 ) return (&ue->sldch);
+   if (sldch->payload_length >0 ) {
+     LOG_I(MAC,"Got %d bytes from RRC for SLDCH @ %p\n",sldch->payload_length,sldch);
+     return (sldch);
+   }
    else
-   */
+
    return((SLDCH_t*)NULL);
 }
 
@@ -2807,7 +2810,7 @@ SLSCH_t *ue_get_slsch(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_
        ue->slsch_lcid = 3;
     }
   } // we're not in the SCCH period
-  else if (((absSF & 3) == 0 ) && 
+  else if (((absSF & 3) == 0 ) &&
 	   (ue->sltx_active == 1)) { // every 4th subframe, check for new data from RLC
     // 10 PRBs, mcs 19
     int TBS = 4584/8;
@@ -2833,7 +2836,7 @@ SLSCH_t *ue_get_slsch(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_
 				    ue->slsch_lcid,
 				    req,
 				    (char*)(ue->slsch_pdu.payload + sizeof(SLSCH_SUBHEADER_24_Bit_DST_LONG)));
-      
+
       // Notes: 1. hard-coded to 24-bit destination format for now
       //        2. LCID hard-coded to 3
       //        3. SRC/DST IDs with debug values
@@ -2844,7 +2847,7 @@ SLSCH_t *ue_get_slsch(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_
 	LOG_I(MAC,"groupL2Id/destinationL2Id: 0x%08x \n",destL2Id);
 
 	slsch->payload = (unsigned char*)ue->slsch_pdu.payload;
-	if (sdu_length < 128) { 
+	if (sdu_length < 128) {
 	  slsch->payload++;
 	  SLSCH_SUBHEADER_24_Bit_DST_SHORT *shorth= (SLSCH_SUBHEADER_24_Bit_DST_SHORT *)slsch->payload;
 	  shorth->F=0;
@@ -2890,6 +2893,6 @@ SLSCH_t *ue_get_slsch(module_id_t module_idP,int CC_id,frame_t frameP,sub_frame_
     return(&ue->slsch);
   }
 
-  
+
   return(NULL);
 }

openair2/RRC/LITE/L2_interface.c

@@ -102,7 +102,7 @@ mac_rrc_data_req(
       }
 
       // All even frames transmit SIB in SF 5
-      AssertFatal(RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1 != 255, 
+      AssertFatal(RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1 != 255,
 		  "[eNB %d] MAC Request for SIB1 and SIB1 not initialized\n",Mod_idP);
 
       if ((frameP%2) == 0) {
@@ -312,7 +312,7 @@ mac_rrc_data_req(
                RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_BR);
         return (RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_BR);
     }
- 
+
     if ((Srb_id & RAB_OFFSET) == BCCH_SI_BR){ // First SI message with SIB2/3
         memcpy(&buffer_pP[0],
                RC.rrc[Mod_idP]->carrier[CC_id].SIB23_BR,
@@ -329,10 +329,11 @@ mac_rrc_data_req(
      LOG_D(RRC,"[UE %d] Frame %d buffer_pP status %d,\n",Mod_idP,frameP, UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size);
 
    //TTN (for D2D)
-     if ((Srb_id & RAB_OFFSET) == SL_DISCOVERY){
+     if (Srb_id  == SL_DISCOVERY && UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size > 0){
         memcpy(&buffer_pP[0],&UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.Payload[0],UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size);
         uint8_t Ret_size=UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size;
-        //      msg("[RRC][UE %d] Sending SL_Discovery\n",Mod_id);
+        LOG_I(RRC,"[UE %d] Sending SL_Discovery, size %d bytes\n",Mod_idP,Ret_size);
+        UE_rrc_inst[Mod_idP].SL_Discovery[eNB_index].Tx_buffer.payload_size = 0;
         return(Ret_size);
      }
 #endif
@@ -513,7 +514,7 @@ mac_rrc_data_ind(
     }
 
     //TTN (for D2D)
-    if((srb_idP & RAB_OFFSET) == SL_DISCOVERY) {
+    if(srb_idP == SL_DISCOVERY) {
        decode_SL_Discovery_Message(&ctxt, eNB_indexP, sduP, sdu_lenP);
     }
 
@@ -522,7 +523,7 @@ mac_rrc_data_ind(
   } else { // This is an eNB
     Srb_info = &RC.rrc[module_idP]->carrier[CC_id].Srb0;
     LOG_D(RRC,"[eNB %d] Received SDU for CCCH on SRB %d\n",module_idP,Srb_info->Srb_id);
-    
+
 #if 0 //defined(ENABLE_ITTI)
     {
       MessageDef *message_p;
@@ -740,7 +741,7 @@ void rrc_out_of_sync_ind(module_id_t Mod_idP, frame_t frameP, uint16_t eNB_index
 	  UE_rrc_inst[Mod_idP].Info[eNB_index].T310_cnt,
 	  UE_rrc_inst[Mod_idP].Info[eNB_index].N310_cnt,
 	  UE_rrc_inst[Mod_idP].Info[eNB_index].N311_cnt);
-  
+
 #if defined(ENABLE_ITTI)
   {
     MessageDef *message_p;
@@ -797,8 +798,8 @@ void mac_eNB_rrc_ul_failure(const module_id_t Mod_instP,
   rrc_mac_remove_ue(Mod_instP,rntiP);
 }
 
-void mac_eNB_rrc_ul_in_sync(const module_id_t Mod_instP, 
-			    const int CC_idP, 
+void mac_eNB_rrc_ul_in_sync(const module_id_t Mod_instP,
+			    const int CC_idP,
 			    const frame_t frameP,
 			    const sub_frame_t subframeP,
 			    const rnti_t rntiP)

openair2/RRC/LITE/defs.h

@@ -134,11 +134,9 @@ struct PC5SEstablishRsp{
 
 //example of PC5_DSICOVERY ANNOUNCEMENT (for testing only)
 typedef struct  {
-   uint8_t msg_type;
-   uint32_t discoveryGroupId;
-   //AnnouncerInfo
-   uint32_t proSeUEId;
-}  __attribute__((__packed__)) PC5DiscoveryAnnouncement;
+   unsigned char bytes[29];
+}  __attribute__((__packed__)) PC5DiscoveryAnnouncement ;
+
 
 struct sidelink_ctrl_element {
    unsigned short type;
@@ -310,7 +308,7 @@ typedef struct uid_linear_allocator_s {
 
 #define PROTOCOL_RRC_CTXT_FMT           PROTOCOL_CTXT_FMT
 #define PROTOCOL_RRC_CTXT_ARGS(CTXT_Pp) PROTOCOL_CTXT_ARGS(CTXT_Pp)
-/** @defgroup _rrc RRC 
+/** @defgroup _rrc RRC
  * @ingroup _oai2
  * @{
  */
@@ -488,7 +486,7 @@ typedef struct SRB_INFO_TABLE_ENTRY_s {
   SRB_INFO Srb_info;
   uint8_t Active;
   uint8_t Status;
-  uint32_t Next_check_frame; 
+  uint32_t Next_check_frame;
 } SRB_INFO_TABLE_ENTRY;
 
 typedef struct MEAS_REPORT_LIST_s {

openair2/RRC/LITE/proto.h

@@ -25,7 +25,7 @@
  * \date 2010 - 2014
  * \email navid.nikaein@eurecom.fr
  * \version 1.0
- 
+
  */
 /** \addtogroup _rrc
  *  @{
@@ -90,7 +90,7 @@ rrc_ue_decode_dcch(
 );
 
 #ifdef Rel14
-int decode_SL_DISCOVERY_Message(
+int decode_SL_Discovery_Message(
   const protocol_ctxt_t* const ctxt_pP,
   const uint8_t                eNB_index,
   uint8_t*               const Sdu,
@@ -291,7 +291,7 @@ rrc_eNB_generate_dedeicatedRRCConnectionReconfiguration(
   const uint8_t                ho_state
 );
 
-void 
+void
 rrc_eNB_reconfigure_DRBs (const protocol_ctxt_t* const ctxt_pP,
 			  rrc_eNB_ue_context_t*  ue_context_pP);
 
@@ -396,14 +396,14 @@ mac_rrc_data_ind(
 
 void mac_sync_ind( module_id_t Mod_instP, uint8_t status);
 
-void mac_eNB_rrc_ul_failure(const module_id_t Mod_instP, 
-			    const int CC_id, 
+void mac_eNB_rrc_ul_failure(const module_id_t Mod_instP,
+			    const int CC_id,
 			    const frame_t frameP,
 			    const sub_frame_t subframeP,
 			    const rnti_t rnti);
 
-void mac_eNB_rrc_ul_in_sync(const module_id_t Mod_instP, 
-			    const int CC_id, 
+void mac_eNB_rrc_ul_in_sync(const module_id_t Mod_instP,
+			    const int CC_id,
 			    const frame_t frameP,
 			    const sub_frame_t subframeP,
 			    const rnti_t rnti);

targets/RT/USER/lte-ue.c

@@ -162,7 +162,7 @@ PHY_VARS_UE* init_ue_vars(LTE_DL_FRAME_PARMS *frame_parms,
     ue = (PHY_VARS_UE *)malloc(sizeof(PHY_VARS_UE));
     memset(ue,0,sizeof(PHY_VARS_UE));
     memcpy(&(ue->frame_parms), frame_parms, sizeof(LTE_DL_FRAME_PARMS));
-  }					
+  }
   else ue = PHY_vars_UE_g[UE_id][0];
 
 
@@ -229,11 +229,11 @@ void init_UE(int nb_inst,int eMBMS_active, int uecap_xer_in) {
   int         ret;
 
   LOG_I(PHY,"UE : Calling Layer 2 for initialization\n");
-    
+
   l2_init_ue(eMBMS_active,(uecap_xer_in==1)?uecap_xer:NULL,
 	     0,// cba_group_active
 	     0); // HO flag
-  
+
   for (inst=0;inst<nb_inst;inst++) {
 
     LOG_I(PHY,"Initializing memory for UE instance %d (%p)\n",inst,PHY_vars_UE_g[inst]);
@@ -331,7 +331,7 @@ static void *UE_thread_synch(void *arg)
   // this thread priority must be lower that the main acquisition thread
   sprintf(threadname, "sync UE %d\n", UE->Mod_id);
   init_thread(100000, 500000, FIFO_PRIORITY-1, &cpuset, threadname);
-  
+
   printf("starting UE synch thread (IC %d)\n",UE->proc.instance_cnt_synch);
   ind = 0;
   found = 0;
@@ -352,7 +352,7 @@ static void *UE_thread_synch(void *arg)
 
       ind++;
     } while (ind < sizeof(eutra_bands) / sizeof(eutra_bands[0]));
-  
+
     if (found == 0) {
       exit_fun("Can't find EUTRA band for frequency");
       return &UE_thread_synch_retval;
@@ -365,7 +365,7 @@ static void *UE_thread_synch(void *arg)
       openair0_cfg[UE->rf_map.card].rx_freq[UE->rf_map.chain+i] = UE->frame_parms.dl_CarrierFreq;
       openair0_cfg[UE->rf_map.card].tx_freq[UE->rf_map.chain+i] = UE->frame_parms.ul_CarrierFreq;
       openair0_cfg[UE->rf_map.card].autocal[UE->rf_map.chain+i] = 1;
-      if (uplink_frequency_offset[CC_id][i] != 0) // 
+      if (uplink_frequency_offset[CC_id][i] != 0) //
 	openair0_cfg[UE->rf_map.card].duplex_mode = duplex_mode_FDD;
       else //FDD
 	openair0_cfg[UE->rf_map.card].duplex_mode = duplex_mode_TDD;
@@ -387,15 +387,15 @@ static void *UE_thread_synch(void *arg)
     }
   }
 
-  while (sync_var<0)     
-    pthread_cond_wait(&sync_cond, &sync_mutex);   
-  pthread_mutex_unlock(&sync_mutex);   
+  while (sync_var<0)
+    pthread_cond_wait(&sync_cond, &sync_mutex);
+  pthread_mutex_unlock(&sync_mutex);
 
-  printf("Started device, unlocked sync_mutex (UE_sync_thread)\n");   
+  printf("Started device, unlocked sync_mutex (UE_sync_thread)\n");
 
-  if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) {     
-    LOG_E(HW,"Could not start the device\n");     
-    oai_exit=1;   
+  if (UE->rfdevice.trx_start_func(&UE->rfdevice) != 0 ) {
+    LOG_E(HW,"Could not start the device\n");
+    oai_exit=1;
   }
 
   while (oai_exit==0) {
@@ -404,13 +404,13 @@ static void *UE_thread_synch(void *arg)
       // the thread waits here most of the time
       pthread_cond_wait( &UE->proc.cond_synch, &UE->proc.mutex_synch );
     AssertFatal ( 0== pthread_mutex_unlock(&UE->proc.mutex_synch), "");
-    
+
     switch (sync_mode) {
     case pss:
       LOG_I(PHY,"[SCHED][UE] Scanning band %d (%d), freq %u\n",bands_to_scan.band_info[current_band].band, current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
       lte_sync_timefreq(UE,current_band,bands_to_scan.band_info[current_band].dl_min+current_offset);
       current_offset += 20000000; // increase by 20 MHz
-      
+
       if (current_offset > bands_to_scan.band_info[current_band].dl_max-bands_to_scan.band_info[current_band].dl_min) {
 	current_band++;
 	current_offset=0;
@@ -434,7 +434,7 @@ static void *UE_thread_synch(void *arg)
       }
 
       break;
- 
+
     case pbch:
 
 #if DISABLE_LOG_X
@@ -770,8 +770,8 @@ void ue_stub_rx_handler(unsigned int num_bytes, char *rx_buffer) {
     wakeup_thread(&UE->timer_mutex,&UE->timer_cond,&UE->instance_cnt_timer,"timer_thread");
     break;
   case SLSCH:
-    
-    
+
+
     LOG_I(PHY,"Emulator SFN.SF %d.%d, Got SLSCH packet\n",emulator_absSF/10,emulator_absSF%10);
     LOG_I(PHY,"Received %d bytes on UE-UE link for SFN.SF %d.%d, sending SLSCH payload (%d bytes) to MAC\n",num_bytes,
 	  pdu->header.absSF/10,pdu->header.absSF%10,
@@ -779,7 +779,7 @@ void ue_stub_rx_handler(unsigned int num_bytes, char *rx_buffer) {
     printf("SLSCH:");
     for (int i=0;i<sizeof(SLSCH_t);i++) printf("%x ",((uint8_t*)slsch)[i]);
     printf("\n");
-    
+
     ue_send_sl_sdu(0,
 		   0,
 		   pdu->header.absSF/10,
@@ -980,9 +980,9 @@ static void *UE_phy_stub_thread_rxn_txnp4(void *arg) {
     stop_meas(&UE->generic_stat);
 #endif
 
-	
+
     // Prepare the future Tx data
-	
+
     if ((subframe_select( &UE->frame_parms, proc->subframe_tx) == SF_UL) ||
 	(UE->frame_parms.frame_type == FDD) )
       if (UE->mode != loop_through_memory){
@@ -1473,14 +1473,14 @@ int setup_ue_buffers(PHY_VARS_UE **phy_vars_ue, openair0_config_t *openair0_cfg)
 
   for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
     rf_map = &phy_vars_ue[CC_id]->rf_map;
-      
+
     AssertFatal( phy_vars_ue[CC_id] !=0, "");
     frame_parms = &(phy_vars_ue[CC_id]->frame_parms);
-      
+
     // replace RX signal buffers with mmaped HW versions
     rxdata = (int32_t**)malloc16( frame_parms->nb_antennas_rx*sizeof(int32_t*) );
     txdata = (int32_t**)malloc16( frame_parms->nb_antennas_tx*sizeof(int32_t*) );
-      
+
     for (i=0; i<frame_parms->nb_antennas_rx; i++) {
       LOG_I(PHY, "Mapping UE CC_id %d, rx_ant %d, freq %u on card %d, chain %d\n",
 	    CC_id, i, downlink_frequency[CC_id][i], rf_map->card, rf_map->chain+i );
@@ -1488,7 +1488,7 @@ int setup_ue_buffers(PHY_VARS_UE **phy_vars_ue, openair0_config_t *openair0_cfg)
       rxdata[i] = (int32_t*)malloc16_clear( 307200*sizeof(int32_t) );
       phy_vars_ue[CC_id]->common_vars.rxdata[i] = rxdata[i]; // what about the "-N_TA_offset" ? // N_TA offset for TDD
     }
-		
+
     for (i=0; i<frame_parms->nb_antennas_tx; i++) {
       LOG_I(PHY, "Mapping UE CC_id %d, tx_ant %d, freq %u on card %d, chain %d\n",
 	    CC_id, i, downlink_frequency[CC_id][i], rf_map->card, rf_map->chain+i );
@@ -1496,7 +1496,7 @@ int setup_ue_buffers(PHY_VARS_UE **phy_vars_ue, openair0_config_t *openair0_cfg)
       txdata[i] = (int32_t*)malloc16_clear( 307200*sizeof(int32_t) );
       phy_vars_ue[CC_id]->common_vars.txdata[i] = txdata[i];
     }
-      
+
     // rxdata[x] points now to the same memory region as phy_vars_ue[CC_id]->common_vars.rxdata[x]
     // txdata[x] points now to the same memory region as phy_vars_ue[CC_id]->common_vars.txdata[x]
     // be careful when releasing memory!
@@ -1520,7 +1520,7 @@ static void* timer_thread( void* param ) {
   UE = PHY_vars_UE_g[0][0];
   double t_diff;
   int external_timer = 0;
-  
+
   wait_sync("timer_thread");
 
   //pthread_mutex_init(&phy_stub_ticking->mutex_ticking,NULL);
@@ -1582,10 +1582,10 @@ static void* timer_thread( void* param ) {
       UE_tport_t pdu;
       pdu.header.packet_type = TTI_SYNC;
       pdu.header.absSF = (timer_frame*10)+timer_subframe;
-      multicast_link_write_sock(0, 
-				&pdu, 
+      multicast_link_write_sock(0,
+				&pdu,
 				sizeof(UE_tport_header_t));
-    
+
     }
     else {
       wait_on_condition(&UE->timer_mutex,&UE->timer_cond,&UE->instance_cnt_timer,"timer_thread");
@@ -1640,11 +1640,3 @@ int init_timer_thread(void) {
   pthread_create(&phy_stub_ticking->pthread_timer, NULL, &timer_thread, NULL);
   return 0;
 }
-
-
-
-
-
-
-
-