dci_tools.c 318 KB
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/*******************************************************************************
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    OpenAirInterface
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    Copyright(c) 1999 - 2014 Eurecom
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    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
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    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
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    You should have received a copy of the GNU General Public License
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    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
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   see <http://www.gnu.org/licenses/>.
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  Contact Information
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  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
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  OpenAirInterface Dev  : openair4g-devel@lists.eurecom.fr
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  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
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 *******************************************************************************/
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/*! \file PHY/LTE_TRANSPORT/dci_tools.c
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 * \brief PHY Support routines (eNB/UE) for filling PDSCH/PUSCH/DLSCH/ULSCH data structures based on DCI PDUs generated by eNB MAC scheduler.
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 * \author R. Knopp
 * \date 2011
 * \version 0.1
 * \company Eurecom
 * \email: knopp@eurecom.fr
 * \note
 * \warning
 */
#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#ifdef DEBUG_DCI_TOOLS
#include "PHY/vars.h"
#endif
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#include "assertions.h"
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//#define DEBUG_DCI

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uint32_t localRIV2alloc_LUT6[32];
uint32_t distRIV2alloc_even_LUT6[32];
uint32_t distRIV2alloc_odd_LUT6[32];
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uint16_t RIV2nb_rb_LUT6[32];
uint16_t RIV2first_rb_LUT6[32];
uint16_t RIV_max6=0;

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uint32_t localRIV2alloc_LUT25[512];
uint32_t distRIV2alloc_even_LUT25[512];
uint32_t distRIV2alloc_odd_LUT25[512];
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uint16_t RIV2nb_rb_LUT25[512];
uint16_t RIV2first_rb_LUT25[512];
uint16_t RIV_max25=0;


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uint32_t localRIV2alloc_LUT50_0[1600];
uint32_t localRIV2alloc_LUT50_1[1600];
uint32_t distRIV2alloc_gap0_even_LUT50_0[1600];
uint32_t distRIV2alloc_gap0_odd_LUT50_0[1600];
uint32_t distRIV2alloc_gap0_even_LUT50_1[1600];
uint32_t distRIV2alloc_gap0_odd_LUT50_1[1600];
uint32_t distRIV2alloc_gap1_even_LUT50_0[1600];
uint32_t distRIV2alloc_gap1_odd_LUT50_0[1600];
uint32_t distRIV2alloc_gap1_even_LUT50_1[1600];
uint32_t distRIV2alloc_gap1_odd_LUT50_1[1600];
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uint16_t RIV2nb_rb_LUT50[1600];
uint16_t RIV2first_rb_LUT50[1600];
uint16_t RIV_max50=0;

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uint32_t localRIV2alloc_LUT100_0[6000];
uint32_t localRIV2alloc_LUT100_1[6000];
uint32_t localRIV2alloc_LUT100_2[6000];
uint32_t localRIV2alloc_LUT100_3[6000];
uint32_t distRIV2alloc_gap0_even_LUT100_0[6000];
uint32_t distRIV2alloc_gap0_odd_LUT100_0[6000];
uint32_t distRIV2alloc_gap0_even_LUT100_1[6000];
uint32_t distRIV2alloc_gap0_odd_LUT100_1[6000];
uint32_t distRIV2alloc_gap0_even_LUT100_2[6000];
uint32_t distRIV2alloc_gap0_odd_LUT100_2[6000];
uint32_t distRIV2alloc_gap0_even_LUT100_3[6000];
uint32_t distRIV2alloc_gap0_odd_LUT100_3[6000];
uint32_t distRIV2alloc_gap1_even_LUT100_0[6000];
uint32_t distRIV2alloc_gap1_odd_LUT100_0[6000];
uint32_t distRIV2alloc_gap1_even_LUT100_1[6000];
uint32_t distRIV2alloc_gap1_odd_LUT100_1[6000];
uint32_t distRIV2alloc_gap1_even_LUT100_2[6000];
uint32_t distRIV2alloc_gap1_odd_LUT100_2[6000];
uint32_t distRIV2alloc_gap1_even_LUT100_3[6000];
uint32_t distRIV2alloc_gap1_odd_LUT100_3[6000];
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uint16_t RIV2nb_rb_LUT100[6000];
uint16_t RIV2first_rb_LUT100[6000];
uint16_t RIV_max100=0;


extern uint32_t current_dlsch_cqi;

// Table 8.6.3-3 36.213
uint16_t beta_cqi[16] = {0,   //reserved
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                         0,   //reserved
                         9,   //1.125
                         10,  //1.250
                         11,  //1.375
                         13,  //1.625
                         14,  //1.750
                         16,  //2.000
                         18,  //2.250
                         20,  //2.500
                         23,  //2.875
                         25,  //3.125
                         28,  //3.500
                         32,  //4.000
                         40,  //5.000
                         50
                        }; //6.250
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// Table 8.6.3-2 36.213
uint16_t beta_ri[16] = {10,   //1.250
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                        13,   //1.625
                        16,   //2.000
                        20,   //2.500
                        25,   //3.125
                        32,   //4.000
                        40,   //5.000
                        50,   //6.250
                        64,   //8.000
                        80,   //10.000
                        101,  //12.625
                        127,  //15.875
                        160,  //20.000
                        0,    //reserved
                        0,    //reserved
                        0
                       };   //reserved
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// Table 8.6.3-2 36.213
uint16_t beta_ack[16] = {16,  //2.000
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                         20,  //2.500
                         25,  //3.125
                         32,  //4.000
                         40,  //5.000
                         50,  //6.250
                         64,  //8.000
                         80,  //10.000
                         101, //12.625
                         127, //15.875
                         160, //20.000
                         248, //31.000
                         400, //50.000
                         640, //80.000
                         808
                        };//126.00
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int8_t delta_PUSCH_abs[4] = {-4,-1,1,4};
int8_t delta_PUSCH_acc[4] = {-1,0,1,3};

int8_t *delta_PUCCH_lut = delta_PUSCH_acc;
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void conv_rballoc(uint8_t ra_header,uint32_t rb_alloc,uint32_t N_RB_DL,uint32_t *rb_alloc2)
{
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  uint32_t i,shift,subset;
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  rb_alloc2[0] = 0;
  rb_alloc2[1] = 0;
  rb_alloc2[2] = 0;
  rb_alloc2[3] = 0;
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  //  printf("N_RB_DL %d, ra_header %d, rb_alloc %x\n",N_RB_DL,ra_header,rb_alloc);

  switch (N_RB_DL) {

  case 6:
    rb_alloc2[0] = rb_alloc&0x3f;
    break;

  case 25:
    if (ra_header == 0) {// Type 0 Allocation
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      for (i=12; i>0; i--) {
        if ((rb_alloc&(1<<i)) != 0)
          rb_alloc2[0] |= (3<<((2*(12-i))));

        //      printf("rb_alloc2 (type 0) %x\n",rb_alloc2);
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      }
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      if ((rb_alloc&1) != 0)
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        rb_alloc2[0] |= (1<<24);
    } else {
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      subset = rb_alloc&1;
      shift  = (rb_alloc>>1)&1;
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      for (i=0; i<11; i++) {
        if ((rb_alloc&(1<<(i+2))) != 0)
          rb_alloc2[0] |= (1<<(2*i));

        //printf("rb_alloc2 (type 1) %x\n",rb_alloc2);
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      }
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      if ((shift == 0) && (subset == 1))
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        rb_alloc2[0]<<=1;
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      else if ((shift == 1) && (subset == 0))
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        rb_alloc2[0]<<=4;
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      else if ((shift == 1) && (subset == 1))
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        rb_alloc2[0]<<=3;
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    }
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    break;
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  case 50:
    if (ra_header == 0) {// Type 0 Allocation

      for (i=16; i>0; i--) {
        if ((rb_alloc&(1<<i)) != 0)
          rb_alloc2[(3*(16-i))>>5] |= (7<<((3*(16-i))%32));
      }
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      /*
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      for (i=1;i<=16;i++) {
        if ((rb_alloc&(1<<(16-i))) != 0)
      rb_alloc2[(3*i)>>5] |= (7<<((3*i)%32));
      }
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      */
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      // bit mask across
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      if ((rb_alloc2[0]>>31)==1)
        rb_alloc2[1] |= 1;
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      if ((rb_alloc&1) != 0)
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        rb_alloc2[1] |= (3<<16);

      /*
        for (i=0;i<16;i++) {
        if (((rb_alloc>>(16-i))&1) != 0)
        rb_alloc2[(3*i)>>5] |= (7<<((3*i)%32));
        if ((i==10)&&((rb_alloc&(1<<6))!=0))
        rb_alloc2[1] = 1;
        //  printf("rb_alloc2[%d] (type 0) %x ((%x>>%d)&1=%d)\n",(3*i)>>5,rb_alloc2[(3*i)>>5],rb_alloc,i,(rb_alloc>>i)&1);

        }
        // fill in 2 from last bit instead of 3
        if ((rb_alloc&1) != 0)
        rb_alloc2[1] |= (3<<i);
        //    printf("rb_alloc2[%d] (type 0) %x ((%x>>%d)&1=%d)\n",(3*i)>>5,rb_alloc2[(3*i)>>5],rb_alloc,i,(rb_alloc>>i)&1);
        */
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      //      printf("rb_alloc[1]=%x,rb_alloc[0]=%x\n",rb_alloc2[1],rb_alloc2[0]);
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    } else {
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      LOG_E(PHY,"resource type 1 not supported for  N_RB_DL=50\n");
      //      mac_xface->macphy_exit("resource type 1 not supported for  N_RB_DL=100\n");
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      /*
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      subset = rb_alloc&1;
      shift  = (rb_alloc>>1)&1;
      for (i=0;i<11;i++) {
      if ((rb_alloc&(1<<(i+2))) != 0)
      rb_alloc2 |= (1<<(2*i));
      //      printf("rb_alloc2 (type 1) %x\n",rb_alloc2);
      }
      if ((shift == 0) && (subset == 1))
      rb_alloc2<<=1;
      else if ((shift == 1) && (subset == 0))
      rb_alloc2<<=4;
      else if ((shift == 1) && (subset == 1))
      rb_alloc2<<=3;
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      */
    }
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    break;

  case 100:
    if (ra_header == 0) {// Type 0 Allocation
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      for (i=0; i<25; i++) {
        if ((rb_alloc&(1<<(24-i))) != 0)
          rb_alloc2[(4*i)>>5] |= (0xf<<((4*i)%32));

        //  printf("rb_alloc2[%d] (type 0) %x (%d)\n",(4*i)>>5,rb_alloc2[(4*i)>>5],rb_alloc&(1<<i));
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      }
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    } else {
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      LOG_E(PHY,"resource type 1 not supported for  N_RB_DL=100\n");
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      //      mac_xface->macphy_exit("resource type 1 not supported for  N_RB_DL=100\n");
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      /*
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      subset = rb_alloc&1;
      shift  = (rb_alloc>>1)&1;
      for (i=0;i<11;i++) {
      if ((rb_alloc&(1<<(i+2))) != 0)
      rb_alloc2 |= (1<<(2*i));
      //      printf("rb_alloc2 (type 1) %x\n",rb_alloc2);
      }
      if ((shift == 0) && (subset == 1))
      rb_alloc2<<=1;
      else if ((shift == 1) && (subset == 0))
      rb_alloc2<<=4;
      else if ((shift == 1) && (subset == 1))
      rb_alloc2<<=3;
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      */
    }
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    break;

  default:
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    LOG_E(PHY,"Invalid N_RB_DL %d\n", N_RB_DL);
    DevParam (N_RB_DL, 0, 0);
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    break;
  }

}



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uint32_t conv_nprb(uint8_t ra_header,uint32_t rb_alloc,int N_RB_DL)
{
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  uint32_t nprb=0,i;

  switch (N_RB_DL) {
  case 6:
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    for (i=0; i<6; i++) {
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      if ((rb_alloc&(1<<i)) != 0)
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        nprb += 1;
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    }
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    break;
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  case 25:
    if (ra_header == 0) {// Type 0 Allocation
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      for (i=12; i>0; i--) {
        if ((rb_alloc&(1<<i)) != 0)
          nprb += 2;
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      }
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      if ((rb_alloc&1) != 0)
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        nprb += 1;
    } else {
      for (i=0; i<11; i++) {
        if ((rb_alloc&(1<<(i+2))) != 0)
          nprb += 1;
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      }
    }
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    break;
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  case 50:
    if (ra_header == 0) {// Type 0 Allocation
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      for (i=0; i<16; i++) {
        if ((rb_alloc&(1<<(16-i))) != 0)
          nprb += 3;
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      }
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      if ((rb_alloc&1) != 0)
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        nprb += 2;
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    } else {
      for (i=0; i<17; i++) {
        if ((rb_alloc&(1<<(i+2))) != 0)
          nprb += 1;
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      }
    }
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    break;
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  case 100:
    if (ra_header == 0) {// Type 0 Allocation
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      for (i=0; i<25; i++) {
        if ((rb_alloc&(1<<(24-i))) != 0)
          nprb += 4;
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      }
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    } else {
      for (i=0; i<25; i++) {
        if ((rb_alloc&(1<<(i+2))) != 0)
          nprb += 1;
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      }
    }
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    break;
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  default:
    LOG_E(PHY,"Invalide N_RB_DL %d\n", N_RB_DL);
    DevParam (N_RB_DL, 0, 0);
    break;
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  }

  return(nprb);
}

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uint16_t computeRIV(uint16_t N_RB_DL,uint16_t RBstart,uint16_t Lcrbs)
{
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  uint16_t RIV;
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  if (Lcrbs<=(1+(N_RB_DL>>1)))
    RIV = (N_RB_DL*(Lcrbs-1)) + RBstart;
  else
    RIV = (N_RB_DL*(N_RB_DL+1-Lcrbs)) + (N_RB_DL-1-RBstart);
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  return(RIV);
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}

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// Convert a DCI Format 1C RIV to a Format 1A RIV
// This extracts the start and length in PRBs from the 1C rballoc and 
// recomputes the RIV as if it were the 1A rballoc

uint32_t conv_1C_RIV(int32_t rballoc,uint32_t N_RB_DL) {

  int NpDLVRB,N_RB_step,LpCRBsm1,RBpstart;

  switch (N_RB_DL) {

  case 6: // N_RB_step = 2, NDLVRB = 6, NpDLVRB = 3
    NpDLVRB   = 3;
    N_RB_step = 2;
    break;
  case 25: // N_RB_step = 2, NDLVRB = 24, NpDLVRB = 12
    NpDLVRB   = 12;
    N_RB_step = 2;
    break;
  case 50: // N_RB_step = 4, NDLVRB = 46, NpDLVRB = 11
    NpDLVRB   = 11;
    N_RB_step = 4;
    break;
  case 100: // N_RB_step = 4, NDLVRB = 96, NpDLVRB = 24
    NpDLVRB   = 24;
    N_RB_step = 4;
    break;
  default:
    NpDLVRB   = 24;
    N_RB_step = 4;
    break;
  }

  // This is the 1C part from 7.1.6.3 in 36.213
  LpCRBsm1 = rballoc/NpDLVRB;
  //  printf("LpCRBs = %d\n",LpCRBsm1+1);

  if (LpCRBsm1 <= (NpDLVRB/2)) {
    RBpstart = rballoc % NpDLVRB;
  }
  else {
    LpCRBsm1 = NpDLVRB-LpCRBsm1;
    RBpstart = NpDLVRB-(rballoc%NpDLVRB);
  }
  //  printf("RBpstart %d\n",RBpstart);
  return(computeRIV(N_RB_DL,N_RB_step*RBpstart,N_RB_step*(LpCRBsm1+1)));
   
}

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uint32_t get_prb(int N_RB_DL,int odd_slot,int vrb,int Ngap) {
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  int offset;

  switch (N_RB_DL) {
    
  case 6:
  // N_RB_DL = tildeN_RB_DL = 6
  // Ngap = 4 , P=1, Nrow = 2, Nnull = 2
  
    switch (vrb) {
    case 0:  // even: 0->0, 1->2, odd: 0->3, 1->5
    case 1:
      return ((3*odd_slot) + 2*(vrb&3))%6;
      break;
    case 2:  // even: 2->3, 3->5, odd: 2->0, 3->2
    case 3:
      return ((3*odd_slot) + 2*(vrb&3) + 5)%6;
      break;
    case 4:  // even: 4->1, odd: 4->4
      return ((3*odd_slot) + 1)%6; 
    case 5:  // even: 5->4, odd: 5->1
      return ((3*odd_slot) + 4)%6;
      break;
    }
    break;
    
  case 15:
    if (vrb<12) {
      if ((vrb&3) < 2)     // even: 0->0, 1->4, 4->1, 5->5, 8->2, 9->6 odd: 0->7, 1->11
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  return(((7*odd_slot) + 4*(vrb&3) + (vrb>>2))%14) + 14*(vrb/14);
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      else if (vrb < 12) // even: 2->7, 3->11, 6->8, 7->12, 10->9, 11->13
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  return (((7*odd_slot) + 4*(vrb&3) + (vrb>>2) +13 )%14) + 14*(vrb/14);
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    }
    if (vrb==12)
      return (3+(7*odd_slot)) % 14;
    if (vrb==13)
      return (10+(7*odd_slot)) % 14;
    return 14;
    break;
    
  case 25:
    return (((12*odd_slot) + 6*(vrb&3) + (vrb>>2))%24) + 24*(vrb/24);
    break;
    
  case 50: // P=3
    if (Ngap==0) {
      // Nrow=12,Nnull=2,NVRBDL=46,Ngap1= 27
      if (vrb>=23)
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  offset=4;
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      else
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  offset=0;
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      if (vrb<44) {
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  if ((vrb&3)>=2)
    return offset+((23*odd_slot) + 12*(vrb&3) + (vrb>>2) + 45)%46;
  else
    return offset+((23*odd_slot) + 12*(vrb&3) + (vrb>>2))%46;
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      }
      if (vrb==44)  // even: 44->11, odd: 45->34
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  return offset+((23*odd_slot) + 22-12+1);
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      if (vrb==45)  // even: 45->10, odd: 45->33
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  return offset+((23*odd_slot) + 22+12);
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      if (vrb==46)
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  return offset+46+((23*odd_slot) + 23-12+1) % 46;
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      if (vrb==47)
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  return offset+46+((23*odd_slot) + 23+12) % 46;
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      if (vrb==48)
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  return offset+46+((23*odd_slot) + 23-12+1) % 46;
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      if (vrb==49)
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  return offset+46+((23*odd_slot) + 23+12) % 46;
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    }
    else {
      // Nrow=6,Nnull=6,NVRBDL=18,Ngap1= 27
      if (vrb>=9)
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  offset=18;
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      else
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  offset=0;
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      if (vrb<12) {
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  if ((vrb&3)>=2)
    return offset+((9*odd_slot) + 6*(vrb&3) + (vrb>>2) + 17)%18;
  else
    return offset+((9*odd_slot) + 6*(vrb&3) + (vrb>>2))%18;
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      }
      else {
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  return offset+((9*odd_slot) + 12*(vrb&1)+(vrb>>1) )%18 + 18*(vrb/18);
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      }
    }
    break;
  case 75:
    // Ngap1 = 32, NVRBRL=64, P=4, Nrow= 16, Nnull=0
    if (Ngap ==0) {
      return ((32*odd_slot) + 16*(vrb&3) + (vrb>>2))%64 + (vrb/64); 
    } else {
      // Ngap2 = 16, NVRBDL=32, Nrow=8, Nnull=0
      return ((16*odd_slot) + 8*(vrb&3) + (vrb>>2))%32 + (vrb/32); 
    }
    break;
  case 100:
    // Ngap1 = 48, NVRBDL=96, Nrow=24, Nnull=0
    if (Ngap ==0) {
      return ((48*odd_slot) + 24*(vrb&3) + (vrb>>2))%96 + (vrb/96); 
    } else {
      // Ngap2 = 16, NVRBDL=32, Nrow=8, Nnull=0
      return ((16*odd_slot) + 8*(vrb&3) + (vrb>>2))%32 + (vrb/32); 
    }
    break;
  default:
    LOG_E(PHY,"Unknown N_RB_DL %d\n",N_RB_DL);
    return 0;
  }
  return 0;
  
}

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void generate_RIV_tables()
{
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  // 6RBs localized RIV
  uint8_t Lcrbs,RBstart;
  uint16_t RIV;
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  uint32_t alloc0,allocdist0_0_even,allocdist0_0_odd,allocdist0_1_even,allocdist0_1_odd;
  uint32_t alloc1,allocdist1_0_even,allocdist1_0_odd,allocdist1_1_even,allocdist1_1_odd;
  uint32_t alloc2,allocdist2_0_even,allocdist2_0_odd,allocdist2_1_even,allocdist2_1_odd;
  uint32_t alloc3,allocdist3_0_even,allocdist3_0_odd,allocdist3_1_even,allocdist3_1_odd;
  uint32_t nVRB,nVRB_even_dist,nVRB_odd_dist;
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  for (RBstart=0; RBstart<6; RBstart++) {
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    alloc0 = 0;
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    allocdist0_0_even = 0;
    allocdist0_0_odd  = 0;
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    for (Lcrbs=1; Lcrbs<=(6-RBstart); Lcrbs++) {
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      //printf("RBstart %d, len %d --> ",RBstart,Lcrbs);
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      nVRB             = Lcrbs-1+RBstart;
      alloc0          |= (1<<nVRB);
      allocdist0_0_even |= (1<<get_prb(6,0,nVRB,0));
      allocdist0_0_odd  |= (1<<get_prb(6,1,nVRB,0));
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      RIV=computeRIV(6,RBstart,Lcrbs);
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      if (RIV>RIV_max6)
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        RIV_max6 = RIV;
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      //      printf("RIV %d (%d) : first_rb %d NBRB %d\n",RIV,localRIV2alloc_LUT25[RIV],RBstart,Lcrbs);
      localRIV2alloc_LUT6[RIV] = alloc0;
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      distRIV2alloc_even_LUT6[RIV]  = allocdist0_0_even;
      distRIV2alloc_odd_LUT6[RIV]  = allocdist0_0_odd;
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      RIV2nb_rb_LUT6[RIV]      = Lcrbs;
      RIV2first_rb_LUT6[RIV]   = RBstart;
    }
  }


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  for (RBstart=0; RBstart<25; RBstart++) {
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    alloc0 = 0;
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    allocdist0_0_even = 0;
    allocdist0_0_odd  = 0;
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    for (Lcrbs=1; Lcrbs<=(25-RBstart); Lcrbs++) {
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      nVRB = Lcrbs-1+RBstart;
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      //printf("RBstart %d, len %d --> ",RBstart,Lcrbs);
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      alloc0     |= (1<<nVRB);
      allocdist0_0_even |= (1<<get_prb(25,0,nVRB,0));
      allocdist0_0_odd  |= (1<<get_prb(25,1,nVRB,0));
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      //printf("alloc 0 %x, allocdist0_even %x, allocdist0_odd %x\n",alloc0,allocdist0_0_even,allocdist0_0_odd);
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      RIV=computeRIV(25,RBstart,Lcrbs);
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      if (RIV>RIV_max25)
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        RIV_max25 = RIV;;
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      localRIV2alloc_LUT25[RIV]      = alloc0;
      distRIV2alloc_even_LUT25[RIV]  = allocdist0_0_even;
      distRIV2alloc_odd_LUT25[RIV]   = allocdist0_0_odd;
      RIV2nb_rb_LUT25[RIV]           = Lcrbs;
      RIV2first_rb_LUT25[RIV]        = RBstart;
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    }
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  }


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  for (RBstart=0; RBstart<50; RBstart++) {
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    alloc0 = 0;
    alloc1 = 0;
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    allocdist0_0_even=0;
    allocdist1_0_even=0;
    allocdist0_0_odd=0;
    allocdist1_0_odd=0;
    allocdist0_1_even=0;
    allocdist1_1_even=0;
    allocdist0_1_odd=0;
    allocdist1_1_odd=0;
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    for (Lcrbs=1; Lcrbs<=(50-RBstart); Lcrbs++) {
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      nVRB = Lcrbs-1+RBstart;
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      if (nVRB<32)
        alloc0 |= (1<<nVRB);
      else
        alloc1 |= (1<<(nVRB-32));

      // Distributed Gap1, even slot
      nVRB_even_dist = get_prb(50,0,nVRB,0);
      if (nVRB_even_dist<32)
        allocdist0_0_even |= (1<<nVRB_even_dist);
      else
        allocdist1_0_even |= (1<<(nVRB_even_dist-32));

      // Distributed Gap1, odd slot
      nVRB_odd_dist = get_prb(50,1,nVRB,0);
      if (nVRB_odd_dist<32)
        allocdist0_0_odd |= (1<<nVRB_odd_dist);
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      else
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        allocdist1_0_odd |= (1<<(nVRB_odd_dist-32));
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      // Distributed Gap2, even slot
      nVRB_even_dist = get_prb(50,0,nVRB,1);
      if (nVRB_even_dist<32)
        allocdist0_1_even |= (1<<nVRB_even_dist);
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      else
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        allocdist1_1_even |= (1<<(nVRB_even_dist-32));
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      // Distributed Gap2, odd slot
      nVRB_odd_dist = get_prb(50,1,nVRB,1);
      if (nVRB_odd_dist<32)
        allocdist0_1_odd |= (1<<nVRB_odd_dist);
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      else
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        allocdist1_1_odd |= (1<<(nVRB_odd_dist-32));
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      RIV=computeRIV(50,RBstart,Lcrbs);
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      if (RIV>RIV_max50)
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        RIV_max50 = RIV;
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      //      printf("RIV %d : first_rb %d NBRB %d\n",RIV,RBstart,Lcrbs);
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      localRIV2alloc_LUT50_0[RIV]      = alloc0;
      localRIV2alloc_LUT50_1[RIV]      = alloc1;
      distRIV2alloc_gap0_even_LUT50_0[RIV]  = allocdist0_0_even;
      distRIV2alloc_gap0_even_LUT50_1[RIV]  = allocdist1_0_even;
      distRIV2alloc_gap0_odd_LUT50_0[RIV]   = allocdist0_0_odd;
      distRIV2alloc_gap0_odd_LUT50_1[RIV]   = allocdist1_0_odd;
      distRIV2alloc_gap1_even_LUT50_0[RIV]  = allocdist0_1_even;
      distRIV2alloc_gap1_even_LUT50_1[RIV]  = allocdist1_1_even;
      distRIV2alloc_gap1_odd_LUT50_0[RIV]   = allocdist0_1_odd;
      distRIV2alloc_gap1_odd_LUT50_1[RIV]   = allocdist1_1_odd;
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      RIV2nb_rb_LUT50[RIV]        = Lcrbs;
      RIV2first_rb_LUT50[RIV]     = RBstart;
    }
  }


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  for (RBstart=0; RBstart<100; RBstart++) {
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    alloc0 = 0;
    alloc1 = 0;
    alloc2 = 0;
    alloc3 = 0;
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    allocdist0_0_even=0;
    allocdist1_0_even=0;
    allocdist2_0_even=0;
    allocdist3_0_even=0;
    allocdist0_0_odd=0;
    allocdist1_0_odd=0;
    allocdist2_0_odd=0;
    allocdist3_0_odd=0;
    allocdist0_1_even=0;
    allocdist1_1_even=0;
    allocdist2_1_even=0;
    allocdist3_1_even=0;
    allocdist0_1_odd=0;
    allocdist1_1_odd=0;
    allocdist2_1_odd=0;
    allocdist3_1_odd=0;
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    for (Lcrbs=1; Lcrbs<=(100-RBstart); Lcrbs++) {
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      nVRB = Lcrbs-1+RBstart;

      if (nVRB<32)
        alloc0 |= (1<<nVRB);
      else if (nVRB<64)
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        alloc1 |= (1<<(nVRB-32));
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      else if (nVRB<96)
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        alloc2 |= (1<<(nVRB-64));
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      else
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        alloc3 |= (1<<(nVRB-96));
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      // Distributed Gap1, even slot
      nVRB_even_dist = get_prb(100,0,nVRB,0);

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//      if ((RBstart==0) && (Lcrbs<=8))
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//  printf("nVRB %d => nVRB_even_dist %d\n",nVRB,nVRB_even_dist);
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      if (nVRB_even_dist<32)
        allocdist0_0_even |= (1<<nVRB_even_dist);
      else if (nVRB_even_dist<64)
        allocdist1_0_even |= (1<<(nVRB_even_dist-32));
      else if (nVRB_even_dist<96)
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  allocdist2_0_even |= (1<<(nVRB_even_dist-64));
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      else
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  allocdist3_0_even |= (1<<(nVRB_even_dist-96));
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/*      if ((RBstart==0) && (Lcrbs<=8))
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  printf("rballoc =>(%08x.%08x.%08x.%08x)\n",
         allocdist0_0_even,
         allocdist1_0_even,
         allocdist2_0_even,
         allocdist3_0_even
         );
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*/
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      // Distributed Gap1, odd slot
      nVRB_odd_dist = get_prb(100,1,nVRB,0);
      if (nVRB_odd_dist<32)
        allocdist0_0_odd |= (1<<nVRB_odd_dist);
      else if (nVRB_odd_dist<64)
        allocdist1_0_odd |= (1<<(nVRB_odd_dist-32));
      else if (nVRB_odd_dist<96)
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  allocdist2_0_odd |= (1<<(nVRB_odd_dist-64));
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      else
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  allocdist3_0_odd |= (1<<(nVRB_odd_dist-96));
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      // Distributed Gap2, even slot
      nVRB_even_dist = get_prb(100,0,nVRB,1);
      if (nVRB_even_dist<32)
        allocdist0_1_even |= (1<<nVRB_even_dist);
      else if (nVRB_even_dist<64)
        allocdist1_1_even |= (1<<(nVRB_even_dist-32));
      else if (nVRB_even_dist<96)
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  allocdist2_1_even |= (1<<(nVRB_even_dist-64));
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      else
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  allocdist3_1_even |= (1<<(nVRB_even_dist-96));
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      // Distributed Gap2, odd slot
      nVRB_odd_dist = get_prb(100,1,nVRB,1);
      if (nVRB_odd_dist<32)
        allocdist0_1_odd |= (1<<nVRB_odd_dist);
      else if (nVRB_odd_dist<64)
        allocdist1_1_odd |= (1<<(nVRB_odd_dist-32));
      else if (nVRB_odd_dist<96)
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  allocdist2_1_odd |= (1<<(nVRB_odd_dist-64));
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      else
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  allocdist3_1_odd |= (1<<(nVRB_odd_dist-96));
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      RIV=computeRIV(100,RBstart,Lcrbs);
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      if (RIV>RIV_max100)
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        RIV_max100 = RIV;
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      //      printf("RIV %d : first_rb %d NBRB %d\n",RIV,RBstart,Lcrbs);
      localRIV2alloc_LUT100_0[RIV] = alloc0;
      localRIV2alloc_LUT100_1[RIV] = alloc1;
      localRIV2alloc_LUT100_2[RIV] = alloc2;
      localRIV2alloc_LUT100_3[RIV] = alloc3;
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      distRIV2alloc_gap0_even_LUT100_0[RIV]  = allocdist0_0_even;
      distRIV2alloc_gap0_even_LUT100_1[RIV]  = allocdist1_0_even;
      distRIV2alloc_gap0_even_LUT100_2[RIV]  = allocdist2_0_even;
      distRIV2alloc_gap0_even_LUT100_3[RIV]  = allocdist3_0_even;
      distRIV2alloc_gap0_odd_LUT100_0[RIV]   = allocdist0_0_odd;
      distRIV2alloc_gap0_odd_LUT100_1[RIV]   = allocdist1_0_odd;
      distRIV2alloc_gap0_odd_LUT100_2[RIV]   = allocdist2_0_odd;
      distRIV2alloc_gap0_odd_LUT100_3[RIV]   = allocdist3_0_odd;
      distRIV2alloc_gap1_even_LUT100_0[RIV]  = allocdist0_1_even;
      distRIV2alloc_gap1_even_LUT100_1[RIV]  = allocdist1_1_even;
      distRIV2alloc_gap1_even_LUT100_2[RIV]  = allocdist2_1_even;
      distRIV2alloc_gap1_even_LUT100_3[RIV]  = allocdist3_1_even;
      distRIV2alloc_gap1_odd_LUT100_0[RIV]   = allocdist0_1_odd;
      distRIV2alloc_gap1_odd_LUT100_1[RIV]   = allocdist1_1_odd;
      distRIV2alloc_gap1_odd_LUT100_2[RIV]   = allocdist2_1_odd;
      distRIV2alloc_gap1_odd_LUT100_3[RIV]   = allocdist3_1_odd;

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      RIV2nb_rb_LUT100[RIV]      = Lcrbs;
      RIV2first_rb_LUT100[RIV]   = RBstart;
    }
  }
}

// Ngap = 3, N_VRB_DL=6, P=1, N_row=2, N_null=4*2-6=2
// permutation for even slots :
//    n_PRB'(0,2,4) = (0,1,2), n_PRB'(1,3,5) = (4,5,6)
//    n_PRB''(0,1,2,3) = (0,2,4,6)
//    => n_tilde_PRB(5) = (4)
//       n_tilde_PRB(4) = (1)
//       n_tilde_PRB(2,3) = (3,5)
//       n_tilde_PRB(0,1) = (0,2)



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uint32_t get_rballoc(vrb_t vrb_type,uint16_t rb_alloc_dci)
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{
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  return(localRIV2alloc_LUT25[rb_alloc_dci]);
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}

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uint8_t get_transmission_mode(module_id_t Mod_id, uint8_t CC_id, rnti_t rnti)
{
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  unsigned char UE_id;

  // find the UE_index corresponding to rnti
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  UE_id = find_ue(rnti,PHY_vars_eNB_g[Mod_id][CC_id]);
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  DevAssert( UE_id != (unsigned char)-1 );
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  return(PHY_vars_eNB_g[Mod_id][CC_id]->transmission_mode[UE_id]);
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}

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int generate_eNB_dlsch_params_from_dci(int frame,
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                                       uint8_t subframe,
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                                       void *dci_pdu,
                                       uint16_t rnti,
                                       DCI_format_t dci_format,
                                       LTE_eNB_DLSCH_t **dlsch,
                                       LTE_DL_FRAME_PARMS *frame_parms,
                                       PDSCH_CONFIG_DEDICATED *pdsch_config_dedicated,
                                       uint16_t si_rnti,
                                       uint16_t ra_rnti,
                                       uint16_t p_rnti,
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                                       uint16_t DL_pmi_single
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                                      )
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{
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  uint8_t harq_pid = UINT8_MAX;
  uint32_t rballoc = UINT32_MAX;
  uint32_t RIV_max = 0;
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  uint8_t NPRB,tbswap,tpmi=0;
  LTE_eNB_DLSCH_t *dlsch0=NULL,*dlsch1;
  uint8_t frame_type=frame_parms->frame_type;
  uint8_t vrb_type=0;
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  uint8_t mcs=0,mcs1=0,mcs2=0;
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  uint8_t I_mcs = 0;
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  uint8_t rv=0,rv1=0,rv2=0;
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  uint8_t rah=0;
  uint8_t TPC=0;
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  LTE_DL_eNB_HARQ_t *dlsch0_harq=NULL,*dlsch1_harq=NULL;
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  //   printf("Generate eNB DCI, format %d, rnti %x (pdu %p)\n",dci_format,rnti,dci_pdu);

  switch (dci_format) {

  case format0:
    return(-1);
    break;
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  case format1A:  // This is DLSCH allocation for control traffic

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    dlsch[0]->subframe_tx[subframe] = 1;

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    switch (frame_parms->N_RB_DL) {
    case 6:
      if (frame_type == TDD) {
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        vrb_type = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_1_5MHz_TDD_1_6_t *)dci_pdu)->harq_pid;
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        //        printf("TDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
      } else {
        vrb_type = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_1_5MHz_FDD_t *)dci_pdu)->harq_pid;
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        //      printf("FDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
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      }
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      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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      if (vrb_type==LOCALIZED) {
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  dlsch0_harq->rb_alloc[0]    = localRIV2alloc_LUT6[rballoc];
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      }
      else {
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  LOG_E(PHY,"Distributed RB allocation not done yet\n");
  mac_xface->macphy_exit("exiting");
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      }
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      dlsch0_harq->vrb_type       = vrb_type;
      dlsch0_harq->nb_rb          = RIV2nb_rb_LUT6[rballoc];//NPRB;
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      RIV_max = RIV_max6;

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      break;
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    case 25:
      if (frame_type == TDD) {
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        vrb_type = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_5MHz_TDD_1_6_t *)dci_pdu)->harq_pid;
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        //      printf("TDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
      } else {
        vrb_type = ((DCI1A_5MHz_FDD_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_5MHz_FDD_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_5MHz_FDD_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_5MHz_FDD_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_5MHz_FDD_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_5MHz_FDD_t *)dci_pdu)->harq_pid;
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        //      printf("FDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
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      }

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      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
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      if (vrb_type==LOCALIZED) {
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  dlsch0_harq->rb_alloc[0]    = localRIV2alloc_LUT25[rballoc];
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      }
      else {
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  LOG_E(PHY,"Distributed RB allocation not done yet\n");
  mac_xface->macphy_exit("exiting");
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      }
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      dlsch0_harq->vrb_type       = vrb_type;
      dlsch0_harq->nb_rb          = RIV2nb_rb_LUT25[rballoc];//NPRB;
      RIV_max                     = RIV_max25;
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      break;
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    case 50:
      if (frame_type == TDD) {
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        vrb_type = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_10MHz_TDD_1_6_t *)dci_pdu)->harq_pid;

        //      printf("TDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
      } else {
        vrb_type = ((DCI1A_10MHz_FDD_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_10MHz_FDD_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_10MHz_FDD_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_10MHz_FDD_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_10MHz_FDD_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_10MHz_FDD_t *)dci_pdu)->harq_pid;
        //printf("FDD 1A: mcs %d, rballoc %x,rv %d, TPC %d\n",mcs,rballoc,rv,TPC);
998 999
      }

1000
      dlsch0_harq = dlsch[0]->harq_processes[harq_pid];
1001
      if (vrb_type==LOCALIZED) {
1002 1003
  dlsch0_harq->rb_alloc[0]     = localRIV2alloc_LUT50_0[rballoc];
  dlsch0_harq->rb_alloc[1]     = localRIV2alloc_LUT50_1[rballoc];
1004 1005
      }
      else {
1006 1007
  LOG_E(PHY,"Distributed RB allocation not done yet\n");
  mac_xface->macphy_exit("exiting");
1008 1009
      }

1010

1011
      dlsch0_harq->vrb_type        = vrb_type;
1012
      dlsch0_harq->nb_rb                               = RIV2nb_rb_LUT50[rballoc];//NPRB;
1013 1014
      RIV_max = RIV_max50;
      break;
1015

1016 1017
    case 100:
      if (frame_type == TDD) {
1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
        vrb_type = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_20MHz_TDD_1_6_t *)dci_pdu)->harq_pid;
        //      printf("TDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
      } else {
        vrb_type = ((DCI1A_20MHz_FDD_t *)dci_pdu)->vrb_type;
        mcs      = ((DCI1A_20MHz_FDD_t *)dci_pdu)->mcs;
        rballoc  = ((DCI1A_20MHz_FDD_t *)dci_pdu)->rballoc;
        rv       = ((DCI1A_20MHz_FDD_t *)dci_pdu)->rv;
        TPC      = ((DCI1A_20MHz_FDD_t *)dci_pdu)->TPC;
        harq_pid = ((DCI1A_20MHz_FDD_t *)dci_pdu)->harq_pid;
        //      printf("FDD 1A: mcs %d, rballoc %x,rv %d, NPRB %d\n",mcs,rballoc,rv,NPRB);
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