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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */
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/*! \file PHY/defs.h
 \brief Top-level defines and structure definitions
 \author R. Knopp, F. Kaltenberger
 \date 2011
 \version 0.1
 \company Eurecom
 \email: knopp@eurecom.fr,florian.kaltenberger@eurecom.fr
 \note
 \warning
*/
#ifndef __PHY_DEFS__H__
#define __PHY_DEFS__H__

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <math.h>
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#include "common_lib.h"

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//#include <complex.h>
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#include "assertions.h"
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#ifdef MEX
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# define msg mexPrintf
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#else
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# ifdef OPENAIR2
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#   if ENABLE_RAL
#     include "collection/hashtable/hashtable.h"
#     include "COMMON/ral_messages_types.h"
#     include "UTIL/queue.h"
#   endif
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#   include "log.h"
#   define msg(aRGS...) LOG_D(PHY, ##aRGS)
# else
#   define msg printf
# endif
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#endif
//use msg in the real-time thread context
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#define msg_nrt printf
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//use msg_nrt in the non real-time context (for initialization, ...)
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#ifndef malloc16
#  ifdef __AVX2__
#    define malloc16(x) memalign(32,x)
#  else
#    define malloc16(x) memalign(16,x)
#  endif
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#endif
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#define free16(y,x) free(y)
#define bigmalloc malloc
#define bigmalloc16 malloc16
#define openair_free(y,x) free((y))
#define PAGE_SIZE 4096

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//#ifdef SHRLIBDEV
//extern int rxrescale;
//#define RX_IQRESCALELEN rxrescale
//#else
//#define RX_IQRESCALELEN 15
//#endif

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//! \brief Allocate \c size bytes of memory on the heap with alignment 16 and zero it afterwards.
//! If no more memory is available, this function will terminate the program with an assertion error.
static inline void* malloc16_clear( size_t size )
{
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#ifdef __AVX2__
  void* ptr = memalign(32, size);
#else
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  void* ptr = memalign(16, size);
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#endif
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  DevAssert(ptr);
  memset( ptr, 0, size );
  return ptr;
}
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#define PAGE_MASK 0xfffff000
#define virt_to_phys(x) (x)

#define openair_sched_exit() exit(-1)


#define max(a,b)  ((a)>(b) ? (a) : (b))
#define min(a,b)  ((a)<(b) ? (a) : (b))


#define bzero(s,n) (memset((s),0,(n)))

#define cmax(a,b)  ((a>b) ? (a) : (b))
#define cmin(a,b)  ((a<b) ? (a) : (b))

#define cmax3(a,b,c) ((cmax(a,b)>c) ? (cmax(a,b)) : (c))

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/// suppress compiler warning for unused arguments
#define UNUSED(x) (void)x;

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#include "impl_defs_top.h"
#include "impl_defs_lte.h"

#include "PHY/TOOLS/time_meas.h"
#include "PHY/CODING/defs.h"
#include "PHY/TOOLS/defs.h"
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#include "platform_types.h"
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#ifdef OPENAIR_LTE

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#include "PHY/LTE_TRANSPORT/defs.h"
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#include <pthread.h>
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#include "targets/ARCH/COMMON/common_lib.h"

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#define NUM_DCI_MAX 32

#define NUMBER_OF_eNB_SECTORS_MAX 3

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#define NB_BANDS_MAX 8

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#ifdef OCP_FRAMEWORK
#include <enums.h>
#else
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typedef enum {normal_txrx=0,rx_calib_ue=1,rx_calib_ue_med=2,rx_calib_ue_byp=3,debug_prach=4,no_L2_connect=5,calib_prach_tx=6,rx_dump_frame=7,loop_through_memory=8} runmode_t;
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enum transmission_access_mode {
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  NO_ACCESS=0,
  POSTPONED_ACCESS,
  CANCELED_ACCESS,
  UNKNOWN_ACCESS,
  SCHEDULED_ACCESS,
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  CBA_ACCESS};

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typedef enum  {
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  eNodeB_3GPP=0,   // classical eNodeB function
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  eNodeB_3GPP_BBU, // eNodeB with NGFI IF5
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  NGFI_RCC_IF4p5,  // NGFI_RCC (NGFI radio cloud center) 
  NGFI_RAU_IF4p5,
  NGFI_RRU_IF5,    // NGFI_RRU (NGFI remote radio-unit,IF5)
  NGFI_RRU_IF4p5   // NGFI_RRU (NGFI remote radio-unit,IF4p5) 
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} eNB_func_t;
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typedef enum {
  synch_to_ext_device=0,  // synch to RF or Ethernet device
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  synch_to_other          // synch to another source (timer, other RU)
} RU_timing_t;
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typedef struct UE_SCAN_INFO_s {
  /// 10 best amplitudes (linear) for each pss signals
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  int32_t amp[3][10];
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  /// 10 frequency offsets (kHz) corresponding to best amplitudes, with respect do minimum DL frequency in the band
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  int32_t freq_offset_Hz[3][10];
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} UE_SCAN_INFO_t;

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/// Top-level PHY Data Structure for RN
typedef struct {
  /// Module ID indicator for this instance
  uint8_t Mod_id;
  uint32_t frame;
  // phy_vars_eNB
  // phy_vars ue
  // cuurently only used to store and forward the PMCH
  uint8_t mch_avtive[10];
  uint8_t sync_area[10]; // num SF
  LTE_UE_DLSCH_t   *dlsch_rn_MCH[10];

} PHY_VARS_RN;

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/// Context data structure for RX/TX portion of subframe processing
typedef struct {
  /// Component Carrier index
  uint8_t              CC_id;
  /// timestamp transmitted to HW
  openair0_timestamp timestamp_tx;
  /// subframe to act upon for transmission
  int subframe_tx;
  /// subframe to act upon for reception
  int subframe_rx;
  /// frame to act upon for transmission
  int frame_tx;
  /// frame to act upon for reception
  int frame_rx;
  /// \brief Instance count for RXn-TXnp4 processing thread.
  /// \internal This variable is protected by \ref mutex_rxtx.
  int instance_cnt_rxtx;
  /// pthread structure for RXn-TXnp4 processing thread
  pthread_t pthread_rxtx;
  /// pthread attributes for RXn-TXnp4 processing thread
  pthread_attr_t attr_rxtx;
  /// condition variable for tx processing thread
  pthread_cond_t cond_rxtx;
  /// mutex for RXn-TXnp4 processing thread
  pthread_mutex_t mutex_rxtx;
  /// scheduling parameters for RXn-TXnp4 thread
  struct sched_param sched_param_rxtx;
} eNB_rxtx_proc_t;
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typedef struct {
  struct PHY_VARS_eNB_s *eNB;
  int UE_id;
  int harq_pid;
  int llr8_flag;
  int ret;
} td_params;

typedef struct {
  struct PHY_VARS_eNB_s *eNB;
  LTE_eNB_DLSCH_t *dlsch;
  int G;
} te_params;

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typedef struct pc_proc_t_s {
  /// timestamp received from HW
  openair0_timestamp timestamp_rx;
  /// timestamp to send to "slave rru"
  openair0_timestamp timestamp_tx;
  /// subframe to act upon for reception
  int subframe_rx;
  /// frame to act upon for reception
  int frame_rx;
  /// \brief Instance count for FH processing thread.
  /// \internal This variable is protected by \ref mutex_FH.
  int instance_cnt_FH;
  /// \brief Instance count for rx processing thread.
  /// \internal This variable is protected by \ref mutex_asynch_rxtx.
  int instance_cnt_asynch_rxtx;
  /// pthread structure for FH processing thread
  pthread_t pthread_FH;
  /// pthread structure for eNB single processing thread
  pthread_t pthread_single;
  /// pthread structure for asychronous RX/TX processing thread
  pthread_t pthread_asynch_rxtx;
  /// flag to indicate first RX acquisition
  int first_rx;
  /// flag to indicate first TX transmission
  int first_tx;
  /// pthread attributes for FH processing thread
  pthread_attr_t attr_FH;
  /// pthread attributes for single eNB processing thread
  pthread_attr_t attr_single;
  /// pthread attributes for asynchronous RX thread
  pthread_attr_t attr_asynch_rxtx;
  /// scheduling parameters for FH thread
  struct sched_param sched_param_FH;
  /// scheduling parameters for single eNB thread
  struct sched_param sched_param_single;
  /// scheduling parameters for asynch_rxtx thread
  struct sched_param sched_param_asynch_rxtx;
  /// condition variable for FH thread
  pthread_cond_t cond_FH;
  /// condition variable for asynch RX/TX thread
  pthread_cond_t cond_asynch_rxtx;
  /// mutex for FH
  pthread_mutex_t mutex_FH;
  /// mutex for asynch RX/TX thread
  pthread_mutex_t mutex_asynch_rxtx;
  /// number of slave threads
  int                  num_slaves;
  /// array of pointers to slaves
  struct pc_proc_t_s           **slave_proc;
} pc_proc_t;

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/// Context data structure for eNB subframe processing
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typedef struct eNB_proc_t_s {
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  /// Component Carrier index
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  uint8_t              CC_id;
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  /// thread index
  int thread_index;
  /// timestamp received from HW
  openair0_timestamp timestamp_rx;
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  /// timestamp to send to "slave rru"
  openair0_timestamp timestamp_tx;
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  /// subframe to act upon for reception
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  int subframe_rx;
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  /// symbol mask for IF4p5 reception per subframe
  uint32_t symbol_mask[10];
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  /// subframe to act upon for PRACH
  int subframe_prach;
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  /// frame to act upon for reception
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  int frame_rx;
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  /// frame to act upon for transmission
  int frame_tx;
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  /// frame offset for secondary eNBs (to correct for frame asynchronism at startup)
  int frame_offset;
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  /// frame to act upon for PRACH
  int frame_prach;
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  /// \internal This variable is protected by \ref mutex_fep.
  int instance_cnt_fep;
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  /// \internal This variable is protected by \ref mutex_td.
  int instance_cnt_td;
  /// \internal This variable is protected by \ref mutex_te.
  int instance_cnt_te;
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  /// \brief Instance count for FH processing thread.
  /// \internal This variable is protected by \ref mutex_FH.
  int instance_cnt_FH;
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  /// \brief Instance count for rx processing thread.
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  /// \internal This variable is protected by \ref mutex_prach.
  int instance_cnt_prach;
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  // instance count for over-the-air eNB synchronization
  int instance_cnt_synch;
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  /// \internal This variable is protected by \ref mutex_asynch_rxtx.
  int instance_cnt_asynch_rxtx;
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  /// pthread structure for FH processing thread
  pthread_t pthread_FH;
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  /// pthread structure for eNB single processing thread
  pthread_t pthread_single;
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  /// pthread structure for asychronous RX/TX processing thread
  pthread_t pthread_asynch_rxtx;
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  /// flag to indicate first RX acquisition
  int first_rx;
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  /// flag to indicate first TX transmission
  int first_tx;
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  /// pthread attributes for parallel fep thread
  pthread_attr_t attr_fep;
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  /// pthread attributes for parallel turbo-decoder thread
  pthread_attr_t attr_td;
  /// pthread attributes for parallel turbo-encoder thread
  pthread_attr_t attr_te;
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  /// pthread attributes for FH processing thread
  pthread_attr_t attr_FH;
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  /// pthread attributes for single eNB processing thread
  pthread_attr_t attr_single;
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  /// pthread attributes for prach processing thread
  pthread_attr_t attr_prach;
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  /// pthread attributes for over-the-air synch thread
  pthread_attr_t attr_synch;
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  /// pthread attributes for asynchronous RX thread
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  pthread_attr_t attr_asynch_rxtx;
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  /// scheduling parameters for parallel fep thread
  struct sched_param sched_param_fep;
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  /// scheduling parameters for parallel turbo-decoder thread
  struct sched_param sched_param_td;
  /// scheduling parameters for parallel turbo-encoder thread
  struct sched_param sched_param_te;
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  /// scheduling parameters for FH thread
  struct sched_param sched_param_FH;
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  /// scheduling parameters for single eNB thread
  struct sched_param sched_param_single;
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  /// scheduling parameters for prach thread
  struct sched_param sched_param_prach;
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  /// scheduling parameters for over-the-air synchronization thread
  struct sched_param sched_param_synch;
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  /// scheduling parameters for asynch_rxtx thread
  struct sched_param sched_param_asynch_rxtx;
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  /// pthread structure for parallel fep thread
  pthread_t pthread_fep;
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  /// pthread structure for parallel turbo-decoder thread
  pthread_t pthread_td;
  /// pthread structure for parallel turbo-encoder thread
  pthread_t pthread_te;
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  /// pthread structure for PRACH thread
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  pthread_t pthread_prach;
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  /// pthread structure for eNB synch thread
  pthread_t pthread_synch;
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  /// condition variable for parallel fep thread
  pthread_cond_t cond_fep;
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  /// condition variable for parallel turbo-decoder thread
  pthread_cond_t cond_td;
  /// condition variable for parallel turbo-encoder thread
  pthread_cond_t cond_te;
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  /// condition variable for FH thread
  pthread_cond_t cond_FH;
  /// condition variable for PRACH processing thread;
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  pthread_cond_t cond_prach;
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  // condition variable for over-the-air eNB synchronization
  pthread_cond_t cond_synch;
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  /// condition variable for asynch RX/TX thread
  pthread_cond_t cond_asynch_rxtx;
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  /// mutex for parallel fep thread
  pthread_mutex_t mutex_fep;
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  /// mutex for parallel turbo-decoder thread
  pthread_mutex_t mutex_td;
  /// mutex for parallel turbo-encoder thread
  pthread_mutex_t mutex_te;
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  /// mutex for FH
  pthread_mutex_t mutex_FH;
  /// mutex for PRACH thread
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  pthread_mutex_t mutex_prach;
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  // mutex for over-the-air eNB synchronization
  pthread_mutex_t mutex_synch;
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  /// mutex for asynch RX/TX thread
  pthread_mutex_t mutex_asynch_rxtx;
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  /// parameters for turbo-decoding worker thread
  td_params tdp;
  /// parameters for turbo-encoding worker thread
  te_params tep;
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  /// set of scheduling variables RXn-TXnp4 threads
  eNB_rxtx_proc_t proc_rxtx[2];
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  /// number of slave threads
  int                  num_slaves;
  /// array of pointers to slaves
  struct eNB_proc_t_s           **slave_proc;
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} eNB_proc_t;

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/// Context data structure for RX/TX portion of subframe processing
typedef struct {
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  /// index of the current UE RX/TX proc
  int                  proc_id;
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  /// Component Carrier index
  uint8_t              CC_id;
  /// timestamp transmitted to HW
  openair0_timestamp timestamp_tx;
  /// subframe to act upon for transmission
  int subframe_tx;
  /// subframe to act upon for reception
  int subframe_rx;
  /// frame to act upon for transmission
  int frame_tx;
  /// frame to act upon for reception
  int frame_rx;
  /// \brief Instance count for RXn-TXnp4 processing thread.
  /// \internal This variable is protected by \ref mutex_rxtx.
  int instance_cnt_rxtx;
  /// pthread structure for RXn-TXnp4 processing thread
  pthread_t pthread_rxtx;
  /// pthread attributes for RXn-TXnp4 processing thread
  pthread_attr_t attr_rxtx;
  /// condition variable for tx processing thread
  pthread_cond_t cond_rxtx;
  /// mutex for RXn-TXnp4 processing thread
  pthread_mutex_t mutex_rxtx;
  /// scheduling parameters for RXn-TXnp4 thread
  struct sched_param sched_param_rxtx;
} UE_rxtx_proc_t;

/// Context data structure for eNB subframe processing
typedef struct {
  /// Component Carrier index
  uint8_t              CC_id;
  /// Last RX timestamp
  openair0_timestamp timestamp_rx;
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  /// pthread attributes for main UE thread
  pthread_attr_t attr_ue;
  /// scheduling parameters for main UE thread
  struct sched_param sched_param_ue;
  /// pthread descriptor main UE thread
  pthread_t pthread_ue;
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  /// \brief Instance count for synch thread.
  /// \internal This variable is protected by \ref mutex_synch.
  int instance_cnt_synch;
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  /// pthread attributes for synch processing thread
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  pthread_attr_t attr_synch;
  /// scheduling parameters for synch thread
  struct sched_param sched_param_synch;
  /// pthread descriptor synch thread
  pthread_t pthread_synch;
  /// condition variable for UE synch thread;
  pthread_cond_t cond_synch;
  /// mutex for UE synch thread
  pthread_mutex_t mutex_synch;
  /// set of scheduling variables RXn-TXnp4 threads
  UE_rxtx_proc_t proc_rxtx[2];
} UE_proc_t;
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/// Top-level PHY Data Structure for eNB
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typedef struct PHY_VARS_eNB_s {
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  /// Module ID indicator for this instance
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  module_id_t          Mod_id;
  uint8_t              CC_id;
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  eNB_proc_t           proc;
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  eNB_func_t           node_function;
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  eNB_timing_t         node_timing;
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  eth_params_t         *eth_params;
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  int                  single_thread_flag;
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  openair0_rf_map      rf_map;
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  int                  abstraction_flag;
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  openair0_timestamp   ts_offset;
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  void                 (*do_prach)(struct PHY_VARS_eNB_s *eNB);
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  int                  (*td)(struct PHY_VARS_eNB_s *eNB,int UE_id,int harq_pid,int llr8_flag);
  int                  (*te)(struct PHY_VARS_eNB_s *,uint8_t *,uint8_t,LTE_eNB_DLSCH_t *,int,uint8_t,time_stats_t *,time_stats_t *,time_stats_t *);
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  void                 (*proc_uespec_rx)(struct PHY_VARS_eNB_s *eNB,eNB_rxtx_proc_t *proc,const relaying_type_t r_type);
  void                 (*proc_tx)(struct PHY_VARS_eNB_s *eNB,eNB_rxtx_proc_t *proc,relaying_type_t r_type,PHY_VARS_RN *rn);
  void                 (*tx_fh)(struct PHY_VARS_eNB_s *eNB,eNB_rxtx_proc_t *proc);
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  void                 (*rx_fh)(struct PHY_VARS_eNB_s *eNB,int *frame, int *subframe);
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  int                  (*start_if)(struct PHY_VARS_eNB_s *eNB);
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  void                 (*fh_asynch)(struct PHY_VARS_eNB_s *eNB,int *frame, int *subframe);
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  uint8_t              local_flag;
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  uint32_t             rx_total_gain_dB;
  LTE_DL_FRAME_PARMS   frame_parms;
  PHY_MEASUREMENTS_eNB measurements[NUMBER_OF_eNB_SECTORS_MAX]; /// Measurement variables
  LTE_eNB_COMMON       common_vars;
  LTE_eNB_SRS          srs_vars[NUMBER_OF_UE_MAX];
  LTE_eNB_PBCH         pbch;
  LTE_eNB_PUSCH       *pusch_vars[NUMBER_OF_UE_MAX];
  LTE_eNB_PRACH        prach_vars;
  LTE_eNB_DLSCH_t     *dlsch[NUMBER_OF_UE_MAX][2];   // Nusers times two spatial streams
  LTE_eNB_ULSCH_t     *ulsch[NUMBER_OF_UE_MAX+1];      // Nusers + number of RA
  LTE_eNB_DLSCH_t     *dlsch_SI,*dlsch_ra;
  LTE_eNB_DLSCH_t     *dlsch_MCH;
  LTE_eNB_UE_stats     UE_stats[NUMBER_OF_UE_MAX];
  LTE_eNB_UE_stats    *UE_stats_ptr[NUMBER_OF_UE_MAX];
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  /// cell-specific reference symbols
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  uint32_t         lte_gold_table[20][2][14];

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  /// UE-specific reference symbols (p=5), TM 7
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  uint32_t         lte_gold_uespec_port5_table[NUMBER_OF_UE_MAX][20][38];
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  /// UE-specific reference symbols (p=7...14), TM 8/9/10
  uint32_t         lte_gold_uespec_table[2][20][2][21];
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  /// mbsfn reference symbols
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  uint32_t         lte_gold_mbsfn_table[10][3][42];
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  uint32_t X_u[64][839];
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  uint8_t pbch_pdu[4]; //PBCH_PDU_SIZE
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  char eNB_generate_rar;

  /// Indicator set to 0 after first SR
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  uint8_t first_sr[NUMBER_OF_UE_MAX];
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  uint32_t max_peak_val;
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  int max_eNB_id, max_sync_pos;

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  int              N_TA_offset; ///timing offset used in TDD
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  /// \brief sinr for all subcarriers of the current link (used only for abstraction).
  /// first index: ? [0..N_RB_DL*12[
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  double *sinr_dB;

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  /// N0 (used for abstraction)
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  double N0;

  unsigned char first_run_timing_advance[NUMBER_OF_UE_MAX];
  unsigned char first_run_I0_measurements;

  unsigned char cooperation_flag; // for cooperative communication

  unsigned char    is_secondary_eNB; // primary by default
  unsigned char    is_init_sync;     /// Flag to tell if initial synchronization is performed. This affects how often the secondary eNB will listen to the PSS from the primary system.
  unsigned char    has_valid_precoder; /// Flag to tell if secondary eNB has channel estimates to create NULL-beams from, and this B/F vector is created.
  unsigned char    PeNB_id;          /// id of Primary eNB
  int              rx_offset;        /// Timing offset (used if is_secondary_eNB)

  /// hold the precoder for NULL beam to the primary user
  int              **dl_precoder_SeNB[3];
  char             log2_maxp; /// holds the maximum channel/precoder coefficient

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  /// if ==0 enables phy only test mode
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  int mac_enabled;

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  /// For emulation only (used by UE abstraction to retrieve DCI)
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  uint8_t num_common_dci[2];                         // num_dci in even/odd subframes
  uint8_t num_ue_spec_dci[2];                         // num_dci in even/odd subframes
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  DCI_ALLOC_t dci_alloc[2][NUM_DCI_MAX]; // dci_alloc from even/odd subframes


  // PDSCH Varaibles
  PDSCH_CONFIG_DEDICATED pdsch_config_dedicated[NUMBER_OF_UE_MAX];

  // PUSCH Varaibles
  PUSCH_CONFIG_DEDICATED pusch_config_dedicated[NUMBER_OF_UE_MAX];

  // PUCCH variables
  PUCCH_CONFIG_DEDICATED pucch_config_dedicated[NUMBER_OF_UE_MAX];

  // UL-POWER-Control
  UL_POWER_CONTROL_DEDICATED ul_power_control_dedicated[NUMBER_OF_UE_MAX];

  // TPC
  TPC_PDCCH_CONFIG tpc_pdcch_config_pucch[NUMBER_OF_UE_MAX];
  TPC_PDCCH_CONFIG tpc_pdcch_config_pusch[NUMBER_OF_UE_MAX];

  // CQI reporting
  CQI_REPORT_CONFIG cqi_report_config[NUMBER_OF_UE_MAX];

  // SRS Variables
  SOUNDINGRS_UL_CONFIG_DEDICATED soundingrs_ul_config_dedicated[NUMBER_OF_UE_MAX];
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  uint8_t ncs_cell[20][7];
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  // Scheduling Request Config
  SCHEDULING_REQUEST_CONFIG scheduling_request_config[NUMBER_OF_UE_MAX];

  // Transmission mode per UE
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  uint8_t transmission_mode[NUMBER_OF_UE_MAX];
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  /// cba_last successful reception for each group, used for collision detection
  uint8_t cba_last_reception[4];
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  // Pointers for active physicalConfigDedicated to be applied in current subframe
  struct PhysicalConfigDedicated *physicalConfigDedicated[NUMBER_OF_UE_MAX];

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  uint32_t rb_mask_ul[4];

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  /// Information regarding TM5
  MU_MIMO_mode mu_mimo_mode[NUMBER_OF_UE_MAX];


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  /// target_ue_dl_mcs : only for debug purposes
  uint32_t target_ue_dl_mcs;
  /// target_ue_ul_mcs : only for debug purposes
  uint32_t target_ue_ul_mcs;
  /// target_ue_dl_rballoc : only for debug purposes
  uint32_t ue_dl_rb_alloc;
  /// target ul PRBs : only for debug
  uint32_t ue_ul_nb_rb;

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  ///check for Total Transmissions
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  uint32_t check_for_total_transmissions;
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  ///check for MU-MIMO Transmissions
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  uint32_t check_for_MUMIMO_transmissions;
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  ///check for SU-MIMO Transmissions
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  uint32_t check_for_SUMIMO_transmissions;
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  ///check for FULL MU-MIMO Transmissions
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  uint32_t  FULL_MUMIMO_transmissions;
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  /// Counter for total bitrate, bits and throughput in downlink
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  uint32_t total_dlsch_bitrate;
  uint32_t total_transmitted_bits;
  uint32_t total_system_throughput;
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  int              hw_timing_advance;

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  time_stats_t phy_proc;
  time_stats_t phy_proc_tx;
  time_stats_t phy_proc_rx;
  time_stats_t rx_prach;
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  time_stats_t ofdm_mod_stats;
  time_stats_t dlsch_encoding_stats;
  time_stats_t dlsch_modulation_stats;
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  time_stats_t dlsch_scrambling_stats;
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  time_stats_t dlsch_rate_matching_stats;
  time_stats_t dlsch_turbo_encoding_stats;
  time_stats_t dlsch_interleaving_stats;

  time_stats_t ofdm_demod_stats;
  time_stats_t rx_dft_stats;
  time_stats_t ulsch_channel_estimation_stats;
  time_stats_t ulsch_freq_offset_estimation_stats;
  time_stats_t ulsch_decoding_stats;
  time_stats_t ulsch_demodulation_stats;
  time_stats_t ulsch_rate_unmatching_stats;
  time_stats_t ulsch_turbo_decoding_stats;
  time_stats_t ulsch_deinterleaving_stats;
  time_stats_t ulsch_demultiplexing_stats;
  time_stats_t ulsch_llr_stats;
  time_stats_t ulsch_tc_init_stats;
  time_stats_t ulsch_tc_alpha_stats;
  time_stats_t ulsch_tc_beta_stats;
  time_stats_t ulsch_tc_gamma_stats;
  time_stats_t ulsch_tc_ext_stats;
  time_stats_t ulsch_tc_intl1_stats;
  time_stats_t ulsch_tc_intl2_stats;
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#ifdef LOCALIZATION
  /// time state for localization
  time_stats_t localization_stats;
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#endif 
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  int32_t pucch1_stats_cnt[NUMBER_OF_UE_MAX][10];
  int32_t pucch1_stats[NUMBER_OF_UE_MAX][10*1024];
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  int32_t pucch1_stats_thres[NUMBER_OF_UE_MAX][10*1024];
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  int32_t pucch1ab_stats_cnt[NUMBER_OF_UE_MAX][10];
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  int32_t pucch1ab_stats[NUMBER_OF_UE_MAX][2*10*1024];
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  int32_t pusch_stats_rb[NUMBER_OF_UE_MAX][10240];
  int32_t pusch_stats_round[NUMBER_OF_UE_MAX][10240];
  int32_t pusch_stats_mcs[NUMBER_OF_UE_MAX][10240];
  int32_t pusch_stats_bsr[NUMBER_OF_UE_MAX][10240];
  int32_t pusch_stats_BO[NUMBER_OF_UE_MAX][10240];
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} PHY_VARS_eNB;

#define debug_msg if (((mac_xface->frame%100) == 0) || (mac_xface->frame < 50)) msg
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/// Top-level PHY Data Structure for UE
typedef struct {
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  /// \brief Module ID indicator for this instance
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  uint8_t Mod_id;
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  /// \brief Component carrier ID for this PHY instance
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  uint8_t CC_id;
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  /// \brief Mapping of CC_id antennas to cards
  openair0_rf_map      rf_map;
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  //uint8_t local_flag;
  /// \brief Indicator of current run mode of UE (normal_txrx, rx_calib_ue, no_L2_connect, debug_prach)
  runmode_t mode;
  /// \brief Indicator that UE should perform band scanning
  int UE_scan;
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  /// \brief Indicator that UE should perform coarse scanning around carrier
  int UE_scan_carrier;
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  /// \brief Indicator that UE is synchronized to an eNB
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  int is_synchronized;
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  /// Data structure for UE process scheduling
  UE_proc_t proc;
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  /// Flag to indicate the UE shouldn't do timing correction at all
  int no_timing_correction;
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  /// \brief Total gain of the TX chain (16-bit baseband I/Q to antenna)
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  uint32_t tx_total_gain_dB;
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  /// \brief Total gain of the RX chain (antenna to baseband I/Q) This is a function of rx_gain_mode (and the corresponding gain) and the rx_gain of the card.
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  uint32_t rx_total_gain_dB;
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  /// \brief Total gains with maximum RF gain stage (ExpressMIMO2/Lime)
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  uint32_t rx_gain_max[4];
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  /// \brief Total gains with medium RF gain stage (ExpressMIMO2/Lime)
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  uint32_t rx_gain_med[4];
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  /// \brief Total gains with bypassed RF gain stage (ExpressMIMO2/Lime)
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  uint32_t rx_gain_byp[4];
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  /// \brief Current transmit power
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  int16_t tx_power_dBm[10];
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  /// \brief Total number of REs in current transmission
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  int tx_total_RE[10];
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  /// \brief Maximum transmit power
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  int8_t tx_power_max_dBm;
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  /// \brief Number of eNB seen by UE
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  uint8_t n_connected_eNB;
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  /// \brief indicator that Handover procedure has been initiated
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  uint8_t ho_initiated;
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  /// \brief indicator that Handover procedure has been triggered
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  uint8_t ho_triggered;
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  /// \brief Measurement variables.
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  PHY_MEASUREMENTS measurements;
  LTE_DL_FRAME_PARMS  frame_parms;
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  /// \brief Frame parame before ho used to recover if ho fails.
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  LTE_DL_FRAME_PARMS  frame_parms_before_ho;
  LTE_UE_COMMON    common_vars;

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  LTE_UE_PDSCH     *pdsch_vars[2][NUMBER_OF_CONNECTED_eNB_MAX+1];
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  LTE_UE_PDSCH_FLP *pdsch_vars_flp[NUMBER_OF_CONNECTED_eNB_MAX+1];
  LTE_UE_PDSCH     *pdsch_vars_SI[NUMBER_OF_CONNECTED_eNB_MAX+1];
  LTE_UE_PDSCH     *pdsch_vars_ra[NUMBER_OF_CONNECTED_eNB_MAX+1];
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  LTE_UE_PDSCH     *pdsch_vars_p[NUMBER_OF_CONNECTED_eNB_MAX+1];
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  LTE_UE_PDSCH     *pdsch_vars_MCH[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_PBCH      *pbch_vars[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_PDCCH     *pdcch_vars[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_PRACH     *prach_vars[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_DLSCH_t   *dlsch[NUMBER_OF_CONNECTED_eNB_MAX][2];
  LTE_UE_ULSCH_t   *ulsch[NUMBER_OF_CONNECTED_eNB_MAX];
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  LTE_UE_DLSCH_t   *dlsch_SI[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_DLSCH_t   *dlsch_ra[NUMBER_OF_CONNECTED_eNB_MAX];
  LTE_UE_DLSCH_t   *dlsch_p[NUMBER_OF_CONNECTED_eNB_MAX];
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  LTE_UE_DLSCH_t   *dlsch_MCH[NUMBER_OF_CONNECTED_eNB_MAX];
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  // This is for SIC in the UE, to store the reencoded data
  LTE_eNB_DLSCH_t  *dlsch_eNB[NUMBER_OF_CONNECTED_eNB_MAX];

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  //Paging parameters
  uint32_t              IMSImod1024;
  uint32_t              PF;
  uint32_t              PO;

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  // For abstraction-purposes only
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  uint8_t               sr[10];
  uint8_t               pucch_sel[10];
  uint8_t               pucch_payload[22];
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  UE_MODE_t        UE_mode[NUMBER_OF_CONNECTED_eNB_MAX];
  /// cell-specific reference symbols
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  uint32_t lte_gold_table[7][20][2][14];

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  /// UE-specific reference symbols (p=5), TM 7
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  uint32_t lte_gold_uespec_port5_table[20][38];
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  /// ue-specific reference symbols
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  uint32_t lte_gold_uespec_table[2][20][2][21];
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  /// mbsfn reference symbols
  uint32_t lte_gold_mbsfn_table[10][3][42];
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  uint32_t X_u[64][839];
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  uint32_t high_speed_flag;
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  uint32_t perfect_ce;
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  int16_t ch_est_alpha;
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  int generate_ul_signal[NUMBER_OF_CONNECTED_eNB_MAX];

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  UE_SCAN_INFO_t scan_info[NB_BANDS_MAX];
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  char ulsch_no_allocation_counter[NUMBER_OF_CONNECTED_eNB_MAX];

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  unsigned char ulsch_Msg3_active[NUMBER_OF_CONNECTED_eNB_MAX];
  uint32_t  ulsch_Msg3_frame[NUMBER_OF_CONNECTED_eNB_MAX];
  unsigned char ulsch_Msg3_subframe[NUMBER_OF_CONNECTED_eNB_MAX];
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  PRACH_RESOURCES_t *prach_resources[NUMBER_OF_CONNECTED_eNB_MAX];
  int turbo_iterations, turbo_cntl_iterations;
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  /// \brief ?.
  /// - first index: eNB [0..NUMBER_OF_CONNECTED_eNB_MAX[ (hard coded)
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  uint32_t total_TBS[NUMBER_OF_CONNECTED_eNB_MAX];
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  /// \brief ?.
  /// - first index: eNB [0..NUMBER_OF_CONNECTED_eNB_MAX[ (hard coded)
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  uint32_t total_TBS_last[NUMBER_OF_CONNECTED_eNB_MAX];
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  /// \brief ?.
  /// - first index: eNB [0..NUMBER_OF_CONNECTED_eNB_MAX[ (hard coded)
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  uint32_t bitrate[NUMBER_OF_CONNECTED_eNB_MAX];
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  /// \brief ?.
  /// - first index: eNB [0..NUMBER_OF_CONNECTED_eNB_MAX[ (hard coded)
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  uint32_t total_received_bits[NUMBER_OF_CONNECTED_eNB_MAX];
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  int dlsch_errors[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_errors_last[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_received[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_received_last[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_fer[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_SI_received[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_SI_errors[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_ra_received[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_ra_errors[NUMBER_OF_CONNECTED_eNB_MAX];
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  int dlsch_p_received[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_p_errors[NUMBER_OF_CONNECTED_eNB_MAX];
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  int dlsch_mch_received_sf[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mch_received[NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mcch_received[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mtch_received[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mcch_errors[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mtch_errors[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mcch_trials[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
  int dlsch_mtch_trials[MAX_MBSFN_AREA][NUMBER_OF_CONNECTED_eNB_MAX];
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  int current_dlsch_cqi[NUMBER_OF_CONNECTED_eNB_MAX];
  unsigned char first_run_timing_advance[NUMBER_OF_CONNECTED_eNB_MAX];
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  uint8_t               generate_prach;
  uint8_t               prach_cnt;
  uint8_t               prach_PreambleIndex;
  //  uint8_t               prach_timer;
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  int              rx_offset; /// Timing offset
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  int              rx_offset_diff; /// Timing adjustment for ofdm symbol0 on HW USRP
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  int              timing_advance; ///timing advance signalled from eNB
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  int              hw_timing_advance;
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  int              N_TA_offset; ///timing offset used in TDD
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  /// Flag to tell if UE is secondary user (cognitive mode)
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  unsigned char    is_secondary_ue;
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  /// Flag to tell if secondary eNB has channel estimates to create NULL-beams from.
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  unsigned char    has_valid_precoder;
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  /// hold the precoder for NULL beam to the primary eNB
  int              **ul_precoder_S_UE;
  /// holds the maximum channel/precoder coefficient
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  char             log2_maxp;
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  /// if ==0 enables phy only test mode
  int mac_enabled;

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  /// Flag to initialize averaging of PHY measurements
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  int init_averaging;
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  /// \brief sinr for all subcarriers of the current link (used only for abstraction).
  /// - first index: ? [0..12*N_RB_DL[
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  double *sinr_dB;
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  /// \brief sinr for all subcarriers of first symbol for the CQI Calculation.
  /// - first index: ? [0..12*N_RB_DL[
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  double *sinr_CQI_dB;

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  /// sinr_effective used for CQI calulcation
  double sinr_eff;

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  /// N0 (used for abstraction)
  double N0;
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  /// PDSCH Varaibles
  PDSCH_CONFIG_DEDICATED pdsch_config_dedicated[NUMBER_OF_CONNECTED_eNB_MAX];

  /// PUSCH Varaibles
  PUSCH_CONFIG_DEDICATED pusch_config_dedicated[NUMBER_OF_CONNECTED_eNB_MAX];
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  /// PUSCH contention-based access vars
  PUSCH_CA_CONFIG_DEDICATED  pusch_ca_config_dedicated[NUMBER_OF_eNB_MAX]; // lola

  /// PUCCH variables

  PUCCH_CONFIG_DEDICATED pucch_config_dedicated[NUMBER_OF_CONNECTED_eNB_MAX];

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  uint8_t ncs_cell[20][7];
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  /// UL-POWER-Control
  UL_POWER_CONTROL_DEDICATED ul_power_control_dedicated[NUMBER_OF_CONNECTED_eNB_MAX];

  /// TPC
  TPC_PDCCH_CONFIG tpc_pdcch_config_pucch[NUMBER_OF_CONNECTED_eNB_MAX];
  TPC_PDCCH_CONFIG tpc_pdcch_config_pusch[NUMBER_OF_CONNECTED_eNB_MAX];

  /// CQI reporting
  CQI_REPORT_CONFIG cqi_report_config[NUMBER_OF_CONNECTED_eNB_MAX];

  /// SRS Variables
  SOUNDINGRS_UL_CONFIG_DEDICATED soundingrs_ul_config_dedicated[NUMBER_OF_CONNECTED_eNB_MAX];

  /// Scheduling Request Config
  SCHEDULING_REQUEST_CONFIG scheduling_request_config[NUMBER_OF_CONNECTED_eNB_MAX];

  /// Transmission mode per eNB
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  uint8_t transmission_mode[NUMBER_OF_CONNECTED_eNB_MAX];
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  time_stats_t phy_proc;
  time_stats_t phy_proc_tx;
  time_stats_t phy_proc_rx;
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  uint32_t use_ia_receiver;

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  time_stats_t ofdm_mod_stats;
  time_stats_t ulsch_encoding_stats;
  time_stats_t ulsch_modulation_stats;
  time_stats_t ulsch_segmentation_stats;
  time_stats_t ulsch_rate_matching_stats;
  time_stats_t ulsch_turbo_encoding_stats;
  time_stats_t ulsch_interleaving_stats;
  time_stats_t ulsch_multiplexing_stats;

  time_stats_t ofdm_demod_stats;
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  time_stats_t dlsch_rx_pdcch_stats;
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  time_stats_t rx_dft_stats;
  time_stats_t dlsch_channel_estimation_stats;
  time_stats_t dlsch_freq_offset_estimation_stats;
  time_stats_t dlsch_decoding_stats;
  time_stats_t dlsch_demodulation_stats;
  time_stats_t dlsch_rate_unmatching_stats;
  time_stats_t dlsch_turbo_decoding_stats;
  time_stats_t dlsch_deinterleaving_stats;
  time_stats_t dlsch_llr_stats;
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  time_stats_t dlsch_unscrambling_stats;
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  time_stats_t dlsch_rate_matching_stats;
  time_stats_t dlsch_turbo_encoding_stats;
  time_stats_t dlsch_interleaving_stats;
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  time_stats_t dlsch_tc_init_stats;
  time_stats_t dlsch_tc_alpha_stats;
  time_stats_t dlsch_tc_beta_stats;
  time_stats_t dlsch_tc_gamma_stats;
  time_stats_t dlsch_tc_ext_stats;
  time_stats_t dlsch_tc_intl1_stats;
  time_stats_t dlsch_tc_intl2_stats;
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  time_stats_t tx_prach;
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  /// RF and Interface devices per CC
  openair0_device rfdevice; 
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} PHY_VARS_UE;

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typedef enum {
  LOCAL_RF=0,
  REMOTE_IF5=1,
  REMOTE_IF4p5=2,
  REMOTE_IF1pp=3,
  MAX_RU_IF_TYPES=4
} RU_if_in_t;

typedef struct {

  /// input interface
  RU_if_in_t RU_if_in;
  /// timing
  RU_if_timing_t RU_if_timing;
  /// number of RX paths on device
  int nb_rx;
  /// number of TX paths on device
  int nb_tx;
  /// Radio Unit device descriptor
  openair0_device rudevice;
  /// Pointer for ifdevice buffer struct
  if_buffer_t ifbuffer;
} RU_desc_t;

typedef struct PRECODER_t_s{
  /// pointer to RAN context governing this precoder
  RAN_CONTEXT *RC;
  /// function pointer to synchronous TX fronthaul function
  void                 (*tx_fh)(PRECODER_t_s *pc);
  /// function pointer to synchronous RX fronthaul function
  void                 (*rx_fh)(PRECODER_t_s *pc,int *frame, int *subframe);
  /// function pointer to asynchronous fronthaul interface
  void                 (*fh_asynch)(struct PRECODER_t_s *pc,int *frame, int *subframe);
  /// function pointer to initialization function for radio interface
  int                  (*start_rf)(struct PRECODER_t_s *pc);
  /// function pointer to RX front-end processing routine (DFTs/prefix removal or NULL)
  void                 (*fep_rx)(struct PRECODER_t_s *pc);
  /// function pointer to TX front-end processing routine (PRECODING and/or IDFTs and prefix removal or NULL)
  void                 (*fep_tx)(struct PRECODER_t_s *pc);
  /// RX and TX buffers for precoder output
  RU_TIME              ru_time;
} PRECODER_t;

typedef struct {
  /// Number of eNB instances in this node
  int nb_inst;
  /// Number of Component Carriers per instance in this node
  int *nb_CC;
  /// Number of radio units
  int nb_RU;
  /// eNB context variables
  PHY_VARS_eNB **eNB;
  /// RU descriptors
  RU_desc_t *ru_desc;
  /// Precoding descriptor per radio unit. This describes what each radio unit is supposed to do and contains the necessary functions for fronthaul interfaces
  PRECODER_t *pc;
} RAN_CONTEXT_t;

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void exit_fun(const char* s);

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static inline int wait_on_condition(pthread_mutex_t *mutex,pthread_cond_t *cond,int *instance_cnt,char *name) {
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  if (pthread_mutex_lock(mutex) != 0) {
    LOG_E( PHY, "[SCHED][eNB] error locking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  
  while (*instance_cnt < 0) {
    // most of the time the thread is waiting here
    // proc->instance_cnt_rxtx is -1
    pthread_cond_wait(cond,mutex); // this unlocks mutex_rxtx while waiting and then locks it again
  }

  if (pthread_mutex_unlock(mutex) != 0) {
    LOG_E(PHY,"[SCHED][eNB] error unlocking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  return(0);
}

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static inline int wait_on_busy_condition(pthread_mutex_t *mutex,pthread_cond_t *cond,int *instance_cnt,char *name) {
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  if (pthread_mutex_lock(mutex) != 0) {
    LOG_E( PHY, "[SCHED][eNB] error locking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  
  while (*instance_cnt == 0) {
    // most of the time the thread will skip this
    // waits only if proc->instance_cnt_rxtx is 0
    pthread_cond_wait(cond,mutex); // this unlocks mutex_rxtx while waiting and then locks it again
  }

  if (pthread_mutex_unlock(mutex) != 0) {
    LOG_E(PHY,"[SCHED][eNB] error unlocking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  return(0);
}

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static inline int release_thread(pthread_mutex_t *mutex,int *instance_cnt,char *name) {
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  if (pthread_mutex_lock(mutex) != 0) {
    LOG_E( PHY, "[SCHED][eNB] error locking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  
  *instance_cnt=*instance_cnt-1;
  
  if (pthread_mutex_unlock(mutex) != 0) {
    LOG_E( PHY, "[SCHED][eNB] error unlocking mutex for %s\n",name);
    exit_fun("nothing to add");
    return(-1);
  }
  return(0);
}
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#include "PHY/INIT/defs.h"
#include "PHY/LTE_REFSIG/defs.h"
#include "PHY/MODULATION/defs.h"
#include "PHY/LTE_TRANSPORT/proto.h"
#include "PHY/LTE_ESTIMATION/defs.h"

#include "SIMULATION/ETH_TRANSPORT/defs.h"
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#endif
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#endif //  __PHY_DEFS__H__