addition of MPDCCH format 5. X_u_br sequences for BL/CE UE support and...

addition of MPDCCH format 5. X_u_br sequences for BL/CE UE support and bugfixes in rx_prach0 for eMTC.

cmake_targets/CMakeLists.txt

@@ -989,6 +989,7 @@ set(PHY_SRC
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/lte_mcs.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/pbch.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/dci.c
+  ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/edci.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/phich.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/pcfich.c
   ${OPENAIR1_DIR}/PHY/LTE_TRANSPORT/pucch.c

openair1/PHY/INIT/lte_init.c

@@ -145,6 +145,13 @@ void phy_config_request(PHY_Config_t *phy_config) {
   LOG_I(PHY,"prach_config_common.prach_ConfigInfo.prach_FreqOffset = %d\n",cfg->prach_config.frequency_offset.value);
 
   init_prach_tables(839);
+  compute_prach_seq(fp->prach_config_common.rootSequenceIndex,
+		    fp->prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
+		    fp->prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		    fp->prach_config_common.prach_ConfigInfo.highSpeedFlag,
+		    fp->frame_type,
+                    RC.eNB[Mod_id][CC_id]->X_u);
+
 #ifdef Rel14
   fp->prach_emtc_config_common.prach_Config_enabled=1;
 
@@ -160,10 +167,18 @@ void phy_config_request(PHY_Config_t *phy_config) {
   AssertFatal(fp->prach_emtc_config_common.prach_ConfigInfo.prach_starting_subframe_periodicity[3]>=fp->prach_emtc_config_common.prach_ConfigInfo.prach_numRepetitionPerPreambleAttempt[3],
 	      "prach_starting_subframe_periodicity[3] < prach_numPetitionPerPreambleAttempt[3]\n");
 
+
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3]                     = cfg->emtc_config.prach_ce_level_3_configuration_index.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_FreqOffset[3]                      = cfg->emtc_config.prach_ce_level_3_frequency_offset.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_enable[3]                  = cfg->emtc_config.prach_ce_level_3_hopping_enable.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_offset[3]                  = cfg->emtc_config.prach_ce_level_3_hopping_offset.value;
+  if (fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[3] == 1)
+    compute_prach_seq(fp->prach_emtc_config_common.rootSequenceIndex,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3],
+		      fp->prach_emtc_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.highSpeedFlag,
+		      fp->frame_type,
+		      RC.eNB[Mod_id][CC_id]->X_u_br[3]);
 
   // CE Level 2 parameters
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[2]                  = cfg->emtc_config.prach_ce_level_2_enable.value;
@@ -175,6 +190,13 @@ void phy_config_request(PHY_Config_t *phy_config) {
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_FreqOffset[2]                      = cfg->emtc_config.prach_ce_level_2_frequency_offset.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_enable[2]                  = cfg->emtc_config.prach_ce_level_2_hopping_enable.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_offset[2]                  = cfg->emtc_config.prach_ce_level_2_hopping_offset.value;
+  if (fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[2] == 1)
+    compute_prach_seq(fp->prach_emtc_config_common.rootSequenceIndex,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3],
+		      fp->prach_emtc_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.highSpeedFlag,
+		      fp->frame_type,
+		      RC.eNB[Mod_id][CC_id]->X_u_br[2]);
 
   // CE Level 1 parameters
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[1]                  = cfg->emtc_config.prach_ce_level_1_enable.value;
@@ -182,11 +204,19 @@ void phy_config_request(PHY_Config_t *phy_config) {
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_numRepetitionPerPreambleAttempt[1] = cfg->emtc_config.prach_ce_level_1_number_of_repetitions_per_attempt.value;
   AssertFatal(fp->prach_emtc_config_common.prach_ConfigInfo.prach_starting_subframe_periodicity[1]>=fp->prach_emtc_config_common.prach_ConfigInfo.prach_numRepetitionPerPreambleAttempt[1],
 	      "prach_starting_subframe_periodicity[1] < prach_numPetitionPerPreambleAttempt[1]\n");
+
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[1]                     = cfg->emtc_config.prach_ce_level_1_configuration_index.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_FreqOffset[1]                      = cfg->emtc_config.prach_ce_level_1_frequency_offset.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_enable[1]                  = cfg->emtc_config.prach_ce_level_1_hopping_enable.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_offset[1]                  = cfg->emtc_config.prach_ce_level_1_hopping_offset.value;
-
+  if (fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[1] == 1)
+    compute_prach_seq(fp->prach_emtc_config_common.rootSequenceIndex,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3],
+		      fp->prach_emtc_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.highSpeedFlag,
+		      fp->frame_type,
+		      RC.eNB[Mod_id][CC_id]->X_u_br[1]);
+  
   // CE Level 0 parameters
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[0]                  = cfg->emtc_config.prach_ce_level_0_enable.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_starting_subframe_periodicity[0]   = cfg->emtc_config.prach_ce_level_0_starting_subframe_periodicity.value;
@@ -197,11 +227,16 @@ void phy_config_request(PHY_Config_t *phy_config) {
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_FreqOffset[0]                      = cfg->emtc_config.prach_ce_level_0_frequency_offset.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_enable[0]                = cfg->emtc_config.prach_ce_level_0_hopping_enable.value;
   fp->prach_emtc_config_common.prach_ConfigInfo.prach_hopping_offset[0]                = cfg->emtc_config.prach_ce_level_0_hopping_offset.value;
-
+  if (fp->prach_emtc_config_common.prach_ConfigInfo.prach_CElevel_enable[0] == 1)
+    compute_prach_seq(fp->prach_emtc_config_common.rootSequenceIndex,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.prach_ConfigIndex[3],
+		      fp->prach_emtc_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		      fp->prach_emtc_config_common.prach_ConfigInfo.highSpeedFlag,
+		      fp->frame_type,
+		      RC.eNB[Mod_id][CC_id]->X_u_br[0]);
 #endif
 
-  compute_prach_seq(&fp->prach_config_common,fp->frame_type,
-                    RC.eNB[Mod_id][CC_id]->X_u);
+
 
   fp->pucch_config_common.deltaPUCCH_Shift = 1+cfg->pucch_config.delta_pucch_shift.value;
   fp->pucch_config_common.nRB_CQI          = cfg->pucch_config.n_cqi_rb.value;
@@ -441,7 +476,11 @@ void phy_config_sib2_ue(uint8_t Mod_id,int CC_id,
   fp->prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig  =radioResourceConfigCommon->prach_Config.prach_ConfigInfo.zeroCorrelationZoneConfig;
   fp->prach_config_common.prach_ConfigInfo.prach_FreqOffset           =radioResourceConfigCommon->prach_Config.prach_ConfigInfo.prach_FreqOffset;
 
-  compute_prach_seq(&fp->prach_config_common,fp->frame_type,ue->X_u);
+  compute_prach_seq(fp->prach_config_common.rootSequenceIndex,
+		    fp->prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
+		    fp->prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		    fp->prach_config_common.prach_ConfigInfo.highSpeedFlag,
+		    fp->frame_type,ue->X_u);
 
 
 
@@ -729,7 +768,10 @@ void phy_config_afterHO_ue(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_id, Mobility
     //       prach_root_sequence_map4[fp->prach_config_common.rootSequenceIndex];
 
     //compute_prach_seq(u,N_ZC, PHY_vars_UE_g[Mod_id]->X_u);
-    compute_prach_seq(&PHY_vars_UE_g[Mod_id][CC_id]->frame_parms.prach_config_common,
+    compute_prach_seq(PHY_vars_UE_g[Mod_id][CC_id]->frame_parms.prach_config_common.rootSequenceIndex,
+		      PHY_vars_UE_g[Mod_id][CC_id]->frame_parms.prach_config_common.prach_ConfigInfo.prach_ConfigIndex,
+		      PHY_vars_UE_g[Mod_id][CC_id]->frame_parms.prach_config_common.prach_ConfigInfo.zeroCorrelationZoneConfig,
+		      PHY_vars_UE_g[Mod_id][CC_id]->frame_parms.prach_config_common.prach_ConfigInfo.highSpeedFlag,
                       fp->frame_type,
                       PHY_vars_UE_g[Mod_id][CC_id]->X_u);
 

openair1/PHY/LTE_TRANSPORT/dci.c

@@ -219,7 +219,14 @@ uint8_t *generate_dci0(uint8_t *dci,
   AssertFatal((aggregation_level==1) || 
 	      (aggregation_level==2) || 
 	      (aggregation_level==4) || 
-	      (aggregation_level==8),
+	      (aggregation_level==8) 
+#ifdef Rel14 // Added for EPDCCH/MPDCCH
+	      ||
+	      (aggregation_level==16) ||
+	      (aggregation_level==24) ||
+	      (aggregation_level==32)
+#endif
+	      ,
 	      "generate_dci FATAL, illegal aggregation_level %d\n",aggregation_level);
   
 

openair1/PHY/LTE_TRANSPORT/dci_tools.c

@@ -2005,7 +2005,7 @@ int fill_mdci_and_dlsch(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,mDCI_ALLOC_t *dc
   dci_alloc->start_symbol               = rel13->start_symbol;
   dci_alloc->ce_mode                    = rel13->ce_mode;
   dci_alloc->dmrs_scrambling_init       = rel13->drms_scrambling_init;
-  dci_alloc->initial_transmission_sf_io = rel13->initial_transmission_sf_io;
+  dci_alloc->i0                         = rel13->initial_transmission_sf_io;
 
   dci_alloc->ra_flag  = 0;
   if (rel13->rnti_type == 2 ) dci_alloc->ra_flag = 1;

openair1/PHY/LTE_TRANSPORT/defs.h

@@ -148,6 +148,8 @@ typedef struct {
   uint16_t nb_rb;
   /// downlink power offset field
   uint8_t dl_power_off;
+  /// start symbold of pdsch
+  uint8_t pdsch_start;
   /// Concatenated "e"-sequences (for definition see 36-212 V8.6 2009-03, p.17-18)
   uint8_t e[MAX_NUM_CHANNEL_BITS] __attribute__((aligned(32)));
   /// Turbo-code outputs (36-212 V8.6 2009-03, p.12
@@ -172,7 +174,7 @@ typedef struct {
   uint8_t Nlayers;
   /// First layer for this PSCH transmission
   uint8_t first_layer;
-   /// codeword this transport block is mapped to
+  /// codeword this transport block is mapped to
   uint8_t codeword;
 } LTE_DL_eNB_HARQ_t;
 
@@ -250,6 +252,13 @@ typedef struct {
   uint8_t decode_phich;
 } LTE_UL_UE_HARQ_t; 
 
+#ifdef Rel14
+typedef enum {
+  CEmodeA = 0,
+  CEmodeB = 1
+} CEmode_t;
+#endif
+
 typedef struct {
   /// TX buffers for UE-spec transmission (antenna ports 5 or 7..14, prior to precoding)
   int32_t *txdataF[8];
@@ -291,7 +300,13 @@ typedef struct {
   int16_t sqrt_rho_a;
   /// amplitude of PDSCH (compared to RS) in symbols containing pilots
   int16_t sqrt_rho_b;
-
+#ifdef Rel14
+  /// indicator that this DLSCH corresponds to SIB1-BR, needed for c_init for scrambling
+  uint8_t sib1_br_flag;
+  /// initial absolute subframe (see 36.211 Section 6.3.1), needed for c_init for scrambling
+  uint16_t i0;
+  CEmode_t CEmode;
+#endif
 } LTE_eNB_DLSCH_t;
 
 #define PUSCH_x 2

openair1/PHY/LTE_TRANSPORT/dlsch_coding.c

@@ -145,7 +145,7 @@ LTE_eNB_DLSCH_t *new_eNB_dlsch(unsigned char Kmimo,unsigned char Mdlharq,uint32_
     bzero(dlsch,sizeof(LTE_eNB_DLSCH_t));
     dlsch->Kmimo = Kmimo;
     dlsch->Mdlharq = Mdlharq;
-    dlsch->Mlimit = 4;
+    dlsch->Mlimit = 8;
     dlsch->Nsoft = Nsoft;
     
     for (layer=0; layer<4; layer++) {

openair1/PHY/LTE_TRANSPORT/dlsch_scrambling.c

@@ -74,10 +74,12 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
 		      int harq_pid,
                       int G,
                       uint8_t q,
+		      uint16_t frame,
                       uint8_t Ns)
 {
 
-  int i;
+  int n;
+
   //  uint8_t reset;
   uint32_t x1, x2, s=0;
   uint8_t *dlsch_e=dlsch->harq_processes[harq_pid]->e;
@@ -85,12 +87,40 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_ENB_DLSCH_SCRAMBLING, VCD_FUNCTION_IN);
 
+#ifdef Rel14
+  // Rule for accumulation of subframes for BL/CE UEs
+  uint8_t Nacc=4;
+  uint16_t j0,j,idelta;
+  uint16_t i  = (Ns>>1) + (10*frame);
+  uint16_t i0 = dlsch->i0;
+
+  if (dlsch->sib1_br_flag==1)                              Nacc=1;
+  else if (dlsch->rnti == 0xFFFF || dlsch->rnti == 0xFFFE) Nacc = (frame_parms->frame_type == TDD) ? 10 : 4;
+  // Note: above SC-RNTI will also have to be added when/if implemented
+  else if (dlsch->CEmode == CEmodeA)                       Nacc=1;
+  else if (dlsch->CEmode == CEmodeB)                       Nacc = (frame_parms->frame_type == TDD) ? 10 : 4;
+
+  if (frame_parms->frame_type == FDD || Nacc == 1) idelta = 0;
+  else                                             idelta = Nacc-2;
+
+  j0 = (i0+idelta)/Nacc;
+  j  = (i - i0)/Nacc; 
+#endif
+
   //  reset = 1;
   // x1 is set in lte_gold_generic
   if (mbsfn_flag == 0) {
-    x2 = (dlsch->rnti<<14) + (q<<13) + ((Ns>>1)<<9) + frame_parms->Nid_cell; //this is c_init in 36.211 Sec 6.3.1
+#ifdef Rel14
+    if (dlsch->i0 != 0xFFFF) {
+      // rule for BL/CE UEs from Section 6.3.1 in 36.211
+      x2=  (dlsch->rnti<<14) + (q<<13) + ((((j0+j)*Nacc)%10)<<9) + frame_parms->Nid_cell;
+      if ((frame&1023) < 200) LOG_D(PHY,"Scrambling init for (i0 %d, i %d, j0 %d, j %d, Nacc %d) => x2 %d\n",i0,i,j0,j,Nacc,x2);
+    }
+    else
+#endif
+    x2 = (dlsch->rnti<<14) + (q<<13) + ((Ns>>1)<<9) + frame_parms->Nid_cell; //this is c_init in 36.211 Sec 6.3.1 for PDSCH
   } else {
-    x2 = ((Ns>>1)<<9) + frame_parms->Nid_cell_mbsfn; //this is c_init in 36.211 Sec 6.3.1
+    x2 = ((Ns>>1)<<9) + frame_parms->Nid_cell_mbsfn; //this is c_init in 36.211 Sec 6.3.1 for PMCH
   }
 
 #ifdef DEBUG_SCRAMBLING
@@ -98,7 +128,7 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
 #endif
   s = lte_gold_scram(&x1, &x2, 1);
 
-  for (i=0; i<(1+(G>>5)); i++) {
+  for (n=0; n<(1+(G>>5)); n++) {
 
 #ifdef DEBUG_SCRAMBLING
     printf("scrambling %d : %d => ",k,e[k]);

openair1/PHY/LTE_TRANSPORT/pmch.c

@@ -285,6 +285,7 @@ void generate_mch(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t *a)
 
   int G;
   int subframe = proc->subframe_tx;
+  int frame    = proc->frame_tx;
 
   if (eNB->abstraction_flag != 0) {
     if (eNB_transport_info_TB_index[eNB->Mod_id][eNB->CC_id]!=0)
@@ -324,7 +325,7 @@ void generate_mch(PHY_VARS_eNB *eNB,eNB_rxtx_proc_t *proc,uint8_t *a)
                        &eNB->dlsch_interleaving_stats)==0,
 		"problem in dlsch_encoding");
 
-    dlsch_scrambling(&eNB->frame_parms,1,eNB->dlsch_MCH,0,G,0,subframe<<1);
+    dlsch_scrambling(&eNB->frame_parms,1,eNB->dlsch_MCH,0,G,0,frame,subframe<<1);
 
 
     mch_modulation(eNB->common_vars.txdataF,

openair1/PHY/LTE_TRANSPORT/prach.c

@@ -1596,16 +1596,17 @@ void rx_prach0(PHY_VARS_eNB *eNB,
 
     if (new_dft == 1) {
       new_dft = 0;
-      Xu=(int16_t*)eNB->X_u[preamble_offset-first_nonzero_root_idx];
 
 #ifdef Rel14
       if (br_flag == 1) {
+	Xu=(int16_t*)eNB->X_u_br[ce_level][preamble_offset-first_nonzero_root_idx];
 	prach_ifft = prach_ifftp[prach_ifft_cnt++];
 	if (eNB->prach_vars_br.repetition_number[ce_level]==1) memset(prach_ifft,0,((N_ZC==839)?2048:256)*sizeof(int32_t));
       }
       else
 #endif
 	{
+	  Xu=(int16_t*)eNB->X_u[preamble_offset-first_nonzero_root_idx];
 	  prach_ifft = prach_ifftp[0];
           memset(prach_ifft,0,((N_ZC==839) ? 2048 : 256)*sizeof(int32_t));
 	}
@@ -1781,15 +1782,18 @@ void init_prach_tables(int N_ZC)
   }
 }
 
-void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
-                       lte_frame_type_t frame_type,
-                       uint32_t X_u[64][839])
+void compute_prach_seq(uint16_t rootSequenceIndex,
+		       uint8_t prach_ConfigIndex,
+		       uint8_t zeroCorrelationZoneConfig,
+		       uint8_t highSpeedFlag,
+		       lte_frame_type_t frame_type,
+		       uint32_t X_u[64][839])
 {
 
   // Compute DFT of x_u => X_u[k] = x_u(inv(u)*k)^* X_u[k] = exp(j\pi u*inv(u)*k*(inv(u)*k+1)/N_ZC)
   unsigned int k,inv_u,i,NCS=0,num_preambles;
   int N_ZC;
-  uint8_t prach_fmt = get_prach_fmt(prach_config_common->prach_ConfigInfo.prach_ConfigIndex,frame_type);
+  uint8_t prach_fmt = get_prach_fmt(prach_ConfigIndex,frame_type);
   uint16_t *prach_root_sequence_map;
   uint16_t u, preamble_offset;
   uint16_t n_shift_ra,n_shift_ra_bar, d_start,numshift;
@@ -1798,7 +1802,7 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_UE_COMPUTE_PRACH, VCD_FUNCTION_IN);
 
 #ifdef PRACH_DEBUG
-  LOG_I(PHY,"compute_prach_seq: NCS_config %d, prach_fmt %d\n",prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig, prach_fmt);
+  LOG_I(PHY,"compute_prach_seq: NCS_config %d, prach_fmt %d\n",zeroCorrelationZoneConfig, prach_fmt);
 #endif
 
   AssertFatal(prach_fmt<4,
@@ -1818,15 +1822,15 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
   LOG_I( PHY, "compute_prach_seq: done init prach_tables\n" );
 #endif
 
-  if (prach_config_common->prach_ConfigInfo.highSpeedFlag== 0) {
+  if (highSpeedFlag== 0) {
 
 #ifdef PRACH_DEBUG
-    LOG_I(PHY,"Low speed prach : NCS_config %d\n",prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig);
+    LOG_I(PHY,"Low speed prach : NCS_config %d\n",zeroCorrelationZoneConfig);
 #endif
 
-    AssertFatal(prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig<=15,
-		"FATAL, Illegal Ncs_config for unrestricted format %"PRIu8"\n", prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig );
-    NCS = NCS_unrestricted[prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig];
+    AssertFatal(zeroCorrelationZoneConfig<=15,
+		"FATAL, Illegal Ncs_config for unrestricted format %"PRIu8"\n", zeroCorrelationZoneConfig );
+    NCS = NCS_unrestricted[zeroCorrelationZoneConfig];
 
     num_preambles = (NCS==0) ? 64 : ((64*NCS)/N_ZC);
 
@@ -1836,12 +1840,12 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
   } else {
 
 #ifdef PRACH_DEBUG
-    LOG_I( PHY, "high speed prach : NCS_config %"PRIu8"\n", prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig );
+    LOG_I( PHY, "high speed prach : NCS_config %"PRIu8"\n", zeroCorrelationZoneConfig );
 #endif
 
-    AssertFatal(prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig<=14,
-		"FATAL, Illegal Ncs_config for restricted format %"PRIu8"\n", prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig );
-    NCS = NCS_restricted[prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig];
+    AssertFatal(zeroCorrelationZoneConfig<=14,
+		"FATAL, Illegal Ncs_config for restricted format %"PRIu8"\n", zeroCorrelationZoneConfig );
+    NCS = NCS_restricted[zeroCorrelationZoneConfig];
     fill_du(prach_fmt);
 
     num_preambles = 64; // compute ZC sequence for 64 possible roots
@@ -1851,7 +1855,7 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
 
     while (not_found == 1) {
       // current root depending on rootSequenceIndex
-      int index = (prach_config_common->rootSequenceIndex + preamble_offset) % N_ZC;
+      int index = (rootSequenceIndex + preamble_offset) % N_ZC;
 
       if (prach_fmt<4) {
         // prach_root_sequence_map points to prach_root_sequence_map0_3
@@ -1895,12 +1899,12 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
 
   if (NCS>0)
     LOG_I( PHY, "Initializing %u preambles for PRACH (NCS_config %"PRIu8", NCS %u, N_ZC/NCS %u)\n",
-           num_preambles, prach_config_common->prach_ConfigInfo.zeroCorrelationZoneConfig, NCS, N_ZC/NCS );
+           num_preambles, zeroCorrelationZoneConfig, NCS, N_ZC/NCS );
 
 #endif
 
   for (i=0; i<num_preambles; i++) {
-    int index = (prach_config_common->rootSequenceIndex+i+preamble_offset) % N_ZC;
+    int index = (rootSequenceIndex+i+preamble_offset) % N_ZC;
 
     if (prach_fmt<4) {
       // prach_root_sequence_map points to prach_root_sequence_map0_3
@@ -1921,7 +1925,6 @@ void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
     for (k=0; k<N_ZC; k++) {
       // 420 is the multiplicative inverse of 2 (required since ru is exp[j 2\pi n])
       X_u[i][k] = ((uint32_t*)ru)[(((k*(1+(inv_u*k)))%N_ZC)*420)%N_ZC];
-      //printf("X_u[%d][%d] (%d)(%d)(%d) : %d,%d\n",i,k,u*inv_u*k*(1+(inv_u*k)),u*inv_u*k*(1+(inv_u*k))/2,(u*inv_u*k*(1+(inv_u*k))/2)%N_ZC,((int16_t*)&X_u[i][k])[0],((int16_t*)&X_u[i][k])[1]);
     }
   }
 

openair1/PHY/LTE_TRANSPORT/proto.h

@@ -1973,6 +1973,7 @@ void dlsch_scrambling(LTE_DL_FRAME_PARMS *frame_parms,
 		      int hard_pid,
                       int G,
                       uint8_t q,
+		      uint16_t frame,
                       uint8_t Ns);
 
 void dlsch_unscrambling(LTE_DL_FRAME_PARMS *frame_parms,
@@ -2114,12 +2115,20 @@ uint8_t get_fid_prach_tdd(module_id_t Mod_id,uint8_t tdd_map_index);
 
 /*!
   \brief Comp ute DFT of PRACH ZC sequences.  Used for generation of prach in UE and reception of PRACH in eNB.
-  @param prach_config_common Pointer to prachConfigCommon structure
+  @param rootSequenceIndex PRACH root sequence
+  #param prach_ConfigIndex PRACH Configuration Index
+  @param zeroCorrelationZoneConfig PRACH ncs_config
+  @param highSpeedFlat PRACH High-Speed Flag
+  @param frame_type TDD/FDD flag
   @param Xu DFT output
 */
-void compute_prach_seq(PRACH_CONFIG_COMMON *prach_config_common,
-                       lte_frame_type_t frame_type,
-                       uint32_t X_u[64][839]);
+void compute_prach_seq(uint16_t rootSequenceIndex,
+		       uint8_t prach_ConfigIndex,
+		       uint8_t zeroCorrelationZoneConfig,
+		       uint8_t highSpeedFlag,
+		       lte_frame_type_t frame_type,
+		       uint32_t X_u[64][839]);
+
 
 void init_prach_tables(int N_ZC);
 

openair1/PHY/defs.h

@@ -940,7 +940,9 @@ typedef struct PHY_VARS_eNB_s {
   uint32_t         lte_gold_mbsfn_table[10][3][42];
 
   uint32_t X_u[64][839];
-
+#ifdef Rel14
+  uint32_t X_u_br[4][64][839];
+#endif
   uint8_t pbch_configured;
   uint8_t pbch_pdu[4]; //PBCH_PDU_SIZE
   char eNB_generate_rar;

openair1/PHY/impl_defs_lte.h

@@ -804,9 +804,9 @@ typedef struct {
   uint8_t narrowband;
   /// number of PRB pairs for MPDCCH
   uint8_t number_of_prb_pairs;
-  /// mpdcch resource assignement (0=localized,1=distributed) 
+  /// mpdcch resource assignement (combinatorial index r)
   uint8_t resource_block_assignment;
-  /// transmission type
+  /// transmission type (0=localized,1=distributed) 
   uint8_t transmission_type;
   /// mpdcch start symbol
   uint8_t start_symbol;
@@ -815,7 +815,11 @@ typedef struct {
   /// 0-503 n_EPDCCHid_i
   uint16_t dmrs_scrambling_init;
   /// Absolute subframe of the initial transmission (0-10239)
-  uint16_t initial_transmission_sf_io;
+  uint16_t i0;
+  /// number of mdpcch repetitions
+  uint16_t reps;
+  /// current absolute subframe number
+  uint16_t absSF;
   /// DCI pdu
   uint8_t dci_pdu[8];
 } mDCI_ALLOC_t;
@@ -834,8 +838,12 @@ typedef struct {
 } LTE_eNB_EPDCCH;
 
 typedef struct {
+  /// number of active MPDCCH allocations
   uint8_t     num_dci;
+  /// MPDCCH DCI allocations from MAC
   mDCI_ALLOC_t mdci_alloc[32];
+  // MAX SIZE of an EPDCCH set is 16EREGs * 9REs/EREG * 8 PRB pairs = 2304 bits 
+  uint8_t e[2304];
 } LTE_eNB_MPDCCH;
 
 

openair2/LAYER2/MAC/eNB_scheduler_RA.c

@@ -290,7 +290,7 @@ void generate_Msg2(module_id_t module_idP,int CC_idP,frame_t frameP,sub_frame_t
 	dl_config_pdu->pdu_size                                                        = (uint8_t)(2+sizeof(nfapi_dl_config_dlsch_pdu));
 	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.pdu_index                              = eNB->pdu_index[CC_idP];
 	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.rnti                                   = RA_template->RA_rnti;
-	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;   // format 1A/1B/1D
+	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_allocation_type               = 2;   
 	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.virtual_resource_block_assignment_flag = 0;   // localized
 	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.resource_block_coding                  = getRIV(N_RB_DL,first_rb,6);
 	dl_config_pdu->dlsch_pdu.dlsch_pdu_rel8.modulation                             = 2; //QPSK
@@ -538,7 +538,7 @@ void generate_Msg4(module_id_t module_idP,int CC_idP,frame_t frameP,sub_frame_t
   if (RA_template->rach_resource_type>0) {
     
     // Generate DCI + repetitions first
-    // This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213 : Note: Assumption that this is still Type 2 Common Search 
+    // This uses an MPDCCH Type 2 allocation according to Section 9.1.5 36-213, Type2 common allocation according to Table 7.1-8 (36-213)
     // Parameters:
     //    p=2+4 PRB set (number of PRB pairs 6)
     //    rmax = mpdcch-NumRepetition-RA-r13 => Table 9.1.5-3

targets/RT/USER/lte-softmodem.c

@@ -1504,10 +1504,6 @@ int main( int argc, char **argv )
       UE[CC_id]->mode    = mode;
       printf("UE[%d]->mode = %d\n",CC_id,mode);
       
-      compute_prach_seq(&UE[CC_id]->frame_parms.prach_config_common,
-			UE[CC_id]->frame_parms.frame_type,
-			UE[CC_id]->X_u);
-      
       if (UE[CC_id]->mac_enabled == 1) { 
 	UE[CC_id]->pdcch_vars[0][0]->crnti = 0x1234;
 	UE[CC_id]->pdcch_vars[1][0]->crnti = 0x1234;