lte_ue_measurements.c 33.7 KB
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/*******************************************************************************
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    OpenAirInterface
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    Copyright(c) 1999 - 2014 Eurecom

    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.


    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.

    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/>.

  Contact Information
  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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// this function fills the PHY_vars->PHY_measurement structure

#include "PHY/defs.h"
#include "PHY/extern.h"
#include "SCHED/defs.h"
#include "SCHED/extern.h"
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#include "log.h"
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#include "PHY/sse_intrin.h"
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//#define k1 1000
#define k1 ((long long int) 1000)
#define k2 ((long long int) (1024-k1))

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//#define DEBUG_MEAS
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#ifdef USER_MODE
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void print_shorts(char *s,short *x)
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{
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  printf("%s  : %d,%d,%d,%d,%d,%d,%d,%d\n",s,
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         x[0],x[1],x[2],x[3],x[4],x[5],x[6],x[7]
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        );
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}
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void print_ints(char *s,int *x)
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{
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  printf("%s  : %d,%d,%d,%d\n",s,
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         x[0],x[1],x[2],x[3]
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        );
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}
#endif


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int16_t get_PL(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  /*
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  int RSoffset;
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  if (phy_vars_ue->lte_frame_parms.mode1_flag == 1)
    RSoffset = 6;
  else
    RSoffset = 3;
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  */
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  LOG_D(PHY,"get_PL : Frame %d : rsrp %f dBm/RE (%f), eNB power %d dBm/RE\n", phy_vars_ue->frame_rx,
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        (1.0*dB_fixed_times10(phy_vars_ue->PHY_measurements.rsrp[eNB_index])-(10.0*phy_vars_ue->rx_total_gain_dB))/10.0,
        10*log10((double)phy_vars_ue->PHY_measurements.rsrp[eNB_index]),
        phy_vars_ue->lte_frame_parms.pdsch_config_common.referenceSignalPower);

  return((int16_t)(((10*phy_vars_ue->rx_total_gain_dB) -
                    dB_fixed_times10(phy_vars_ue->PHY_measurements.rsrp[eNB_index])+
                    //        dB_fixed_times10(RSoffset*12*PHY_vars_UE_g[Mod_id][CC_id]->lte_frame_parms.N_RB_DL) +
                    (phy_vars_ue->lte_frame_parms.pdsch_config_common.referenceSignalPower*10))/10));
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}

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uint8_t get_n_adj_cells (uint8_t Mod_id,uint8_t CC_id)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue)
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    return phy_vars_ue->PHY_measurements.n_adj_cells;
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  else
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    return 0;
}

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uint32_t get_rx_total_gain_dB (uint8_t Mod_id,uint8_t CC_id)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue)
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    return phy_vars_ue->rx_total_gain_dB;
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  return 0xFFFFFFFF;
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}
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uint32_t get_RSSI (uint8_t Mod_id,uint8_t CC_id)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue)
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    return phy_vars_ue->PHY_measurements.rssi;
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  return 0xFFFFFFFF;
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}
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uint32_t get_RSRP(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{

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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue)
    return phy_vars_ue->PHY_measurements.rsrp[eNB_index];
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  return 0xFFFFFFFF;
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}

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uint32_t get_RSRQ(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue)
    return phy_vars_ue->PHY_measurements.rsrq[eNB_index];
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  return 0xFFFFFFFF;
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}

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int8_t set_RSRP_filtered(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index,float rsrp)
{

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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue) {
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    phy_vars_ue->PHY_measurements.rsrp_filtered[eNB_index]=rsrp;
    return 0;
  }
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  LOG_W(PHY,"[UE%d] could not set the rsrp\n",Mod_id);
  return -1;
}

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int8_t set_RSRQ_filtered(uint8_t Mod_id,uint8_t CC_id,uint8_t eNB_index,float rsrq)
{
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  PHY_VARS_UE *phy_vars_ue = PHY_vars_UE_g[Mod_id][CC_id];
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  if (phy_vars_ue) {
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    phy_vars_ue->PHY_measurements.rsrq_filtered[eNB_index]=rsrq;
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    return 0;
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  }
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  LOG_W(PHY,"[UE%d] could not set the rsrq\n",Mod_id);
  return -1;
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}
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void ue_rrc_measurements(PHY_VARS_UE *phy_vars_ue,
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                         uint8_t slot,
                         uint8_t abstraction_flag)
{
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  int aarx,rb;
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  int16_t *rxF,*rxF_pss,*rxF_sss;
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  uint16_t Nid_cell = phy_vars_ue->lte_frame_parms.Nid_cell;
  uint8_t eNB_offset,nu,l,nushift,k;
  uint16_t off;
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  for (eNB_offset = 0; eNB_offset<1+phy_vars_ue->PHY_measurements.n_adj_cells; eNB_offset++) {
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    if (eNB_offset==0) {
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      phy_vars_ue->PHY_measurements.rssi = 0;
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      phy_vars_ue->PHY_measurements.n0_power_tot = 0;

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      if (abstraction_flag == 0) {
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        if ((phy_vars_ue->lte_frame_parms.frame_type == FDD) &&
            ((slot == 0) || (slot == 10))) {  // FDD PSS/SSS, compute noise in DTX REs

          if (phy_vars_ue->lte_frame_parms.Ncp==NORMAL) {
            for (aarx=0; aarx<phy_vars_ue->lte_frame_parms.nb_antennas_rx; aarx++) {

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	      rxF_sss = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(5*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
	      rxF_pss = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(6*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
	      
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              //-ve spectrum from SSS
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	      //	      printf("slot %d: SSS DTX: %d,%d, non-DTX %d,%d\n",slot,rxF_pss[-72],rxF_pss[-71],rxF_pss[-36],rxF_pss[-35]);

	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] = (((int32_t)rxF_pss[-72]*rxF_pss[-72])+((int32_t)rxF_pss[-71]*rxF_pss[-71]));
	      //	      printf("sssn36 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);
              phy_vars_ue->PHY_measurements.n0_power[aarx] = (((int32_t)rxF_pss[-70]*rxF_pss[-70])+((int32_t)rxF_pss[-69]*rxF_pss[-69]));
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              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-68]*rxF_pss[-68])+((int32_t)rxF_pss[-67]*rxF_pss[-67]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-66]*rxF_pss[-66])+((int32_t)rxF_pss[-65]*rxF_pss[-65]));
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	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-64]*rxF_pss[-64])+((int32_t)rxF_pss[-63]*rxF_pss[-63]));
	      //	      printf("sssm32 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);
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              //+ve spectrum from SSS
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	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+70]*rxF_sss[2+70])+((int32_t)rxF_sss[2+69]*rxF_sss[2+69]));
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              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+68]*rxF_sss[2+68])+((int32_t)rxF_sss[2+67]*rxF_sss[2+67]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+66]*rxF_sss[2+66])+((int32_t)rxF_sss[2+65]*rxF_sss[2+65]));
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	      //	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+64]*rxF_sss[2+64])+((int32_t)rxF_sss[2+63]*rxF_sss[2+63]));
	      //	      printf("sssp32 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);
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              //+ve spectrum from PSS
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[2+70]*rxF_pss[2+70])+((int32_t)rxF_pss[2+69]*rxF_pss[2+69]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[2+68]*rxF_pss[2+68])+((int32_t)rxF_pss[2+67]*rxF_pss[2+67]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[2+66]*rxF_pss[2+66])+((int32_t)rxF_pss[2+65]*rxF_pss[2+65]));
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	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[2+64]*rxF_pss[2+64])+((int32_t)rxF_pss[2+63]*rxF_pss[2+63]));
	      //	      printf("pss32 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);              //-ve spectrum from PSS
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              rxF_pss = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(7*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
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	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-72]*rxF_pss[-72])+((int32_t)rxF_pss[-71]*rxF_pss[-71]));
	      //	      printf("pssm36 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);
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              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-70]*rxF_pss[-70])+((int32_t)rxF_pss[-69]*rxF_pss[-69]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-68]*rxF_pss[-68])+((int32_t)rxF_pss[-67]*rxF_pss[-67]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-66]*rxF_pss[-66])+((int32_t)rxF_pss[-65]*rxF_pss[-65]));
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	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-64]*rxF_pss[-64])+((int32_t)rxF_pss[-63]*rxF_pss[-63]));
	      //	      printf("pssm32 %d\n",phy_vars_ue->PHY_measurements.n0_power[aarx]);
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              phy_vars_ue->PHY_measurements.n0_power_dB[aarx] = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.n0_power[aarx]/12);
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              phy_vars_ue->PHY_measurements.n0_power_tot +=  phy_vars_ue->PHY_measurements.n0_power[aarx];
            }

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	    phy_vars_ue->PHY_measurements.n0_power_tot_dB = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.n0_power_tot/(12*aarx));
	    phy_vars_ue->PHY_measurements.n0_power_tot_dBm = phy_vars_ue->PHY_measurements.n0_power_tot_dB - phy_vars_ue->rx_total_gain_dB - dB_fixed(phy_vars_ue->lte_frame_parms.ofdm_symbol_size);
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	  }
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        }
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	else if ((phy_vars_ue->lte_frame_parms.frame_type == TDD) &&
		 (slot == 1)) {  // TDD SSS, compute noise in DTX REs

          if (phy_vars_ue->lte_frame_parms.Ncp==NORMAL) {
            for (aarx=0; aarx<phy_vars_ue->lte_frame_parms.nb_antennas_rx; aarx++) {

	      rxF_sss = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(6*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
	      // note this is a dummy pointer, the pss is not really there!
	      // in FDD the pss is in the symbol after the sss, but not in TDD
	      rxF_pss = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(7*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
	      
	      //-ve spectrum from SSS
	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] = (((int32_t)rxF_pss[-72]*rxF_pss[-72])+((int32_t)rxF_pss[-71]*rxF_pss[-71]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] = (((int32_t)rxF_pss[-70]*rxF_pss[-70])+((int32_t)rxF_pss[-69]*rxF_pss[-69]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-68]*rxF_pss[-68])+((int32_t)rxF_pss[-67]*rxF_pss[-67]));
              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-66]*rxF_pss[-66])+((int32_t)rxF_pss[-65]*rxF_pss[-65]));
	      //              phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_pss[-64]*rxF_pss[-64])+((int32_t)rxF_pss[-63]*rxF_pss[-63]));
	      //+ve spectrum from SSS
	      //	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+72]*rxF_sss[2+72])+((int32_t)rxF_sss[2+71]*rxF_sss[2+71]));
	      phy_vars_ue->PHY_measurements.n0_power[aarx] = (((int32_t)rxF_sss[2+70]*rxF_sss[2+70])+((int32_t)rxF_sss[2+69]*rxF_sss[2+69]));
	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+68]*rxF_sss[2+68])+((int32_t)rxF_sss[2+67]*rxF_sss[2+67]));
	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+66]*rxF_sss[2+66])+((int32_t)rxF_sss[2+65]*rxF_sss[2+65]));
	      //	      phy_vars_ue->PHY_measurements.n0_power[aarx] += (((int32_t)rxF_sss[2+64]*rxF_sss[2+64])+((int32_t)rxF_sss[2+63]*rxF_sss[2+63]));
	      
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	      phy_vars_ue->PHY_measurements.n0_power_dB[aarx] = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.n0_power[aarx]/(6));
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	      phy_vars_ue->PHY_measurements.n0_power_tot +=  phy_vars_ue->PHY_measurements.n0_power[aarx];	  
	    }	      
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	    phy_vars_ue->PHY_measurements.n0_power_tot_dB = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.n0_power_tot/(6*aarx));
	    phy_vars_ue->PHY_measurements.n0_power_tot_dBm = phy_vars_ue->PHY_measurements.n0_power_tot_dB - phy_vars_ue->rx_total_gain_dB - dB_fixed(phy_vars_ue->lte_frame_parms.ofdm_symbol_size);
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	  }
	}
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      }
    }
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    // recompute nushift with eNB_offset corresponding to adjacent eNB on which to perform channel estimation
    //    printf("[PHY][UE %d] Frame %d slot %d Doing ue_rrc_measurements rsrp/rssi (Nid_cell %d, Nid2 %d, nushift %d, eNB_offset %d)\n",phy_vars_ue->Mod_id,phy_vars_ue->frame,slot,Nid_cell,Nid2,nushift,eNB_offset);
    if (eNB_offset > 0)
      Nid_cell = phy_vars_ue->PHY_measurements.adj_cell_id[eNB_offset-1];


    nushift =  Nid_cell%6;



    phy_vars_ue->PHY_measurements.rsrp[eNB_offset] = 0;


    if (abstraction_flag == 0) {
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      // compute RSRP using symbols 0 and 4-frame_parms->Ncp

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      for (l=0,nu=0; l<=(4-phy_vars_ue->lte_frame_parms.Ncp); l+=(4-phy_vars_ue->lte_frame_parms.Ncp),nu=3) {
        k = (nu + nushift)%6;
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#ifdef DEBUG_MEAS
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        LOG_I(PHY,"[UE %d] Frame %d slot %d Doing ue_rrc_measurements rsrp/rssi (Nid_cell %d, nushift %d, eNB_offset %d, k %d, l %d)\n",phy_vars_ue->Mod_id,phy_vars_ue->frame_rx,slot,Nid_cell,nushift,
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              eNB_offset,k,l);
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#endif
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        for (aarx=0; aarx<phy_vars_ue->lte_frame_parms.nb_antennas_rx; aarx++) {
          rxF = (int16_t *)&phy_vars_ue->lte_ue_common_vars.rxdataF[aarx][(l*phy_vars_ue->lte_frame_parms.ofdm_symbol_size)];
          off  = (phy_vars_ue->lte_frame_parms.first_carrier_offset+k)<<1;

          if (l==(4-phy_vars_ue->lte_frame_parms.Ncp)) {
            for (rb=0; rb<phy_vars_ue->lte_frame_parms.N_RB_DL; rb++) {

              //    printf("rb %d, off %d, off2 %d\n",rb,off,off2);

              phy_vars_ue->PHY_measurements.rsrp[eNB_offset] += (((int32_t)(rxF[off])*rxF[off])+((int32_t)(rxF[off+1])*rxF[off+1]));
              //        printf("rb %d, off %d : %d\n",rb,off,((((int32_t)rxF[off])*rxF[off])+((int32_t)(rxF[off+1])*rxF[off+1])));
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	      //	      if ((phy_vars_ue->frame_rx&0x3ff) == 0)
	      //                printf("rb %d, off %d : %d\n",rb,off,((rxF[off]*rxF[off])+(rxF[off+1]*rxF[off+1])));
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              off+=12;

              if (off>=(phy_vars_ue->lte_frame_parms.ofdm_symbol_size<<1))
                off = (1+k)<<1;

              phy_vars_ue->PHY_measurements.rsrp[eNB_offset] += (((int32_t)(rxF[off])*rxF[off])+((int32_t)(rxF[off+1])*rxF[off+1]));
              //    printf("rb %d, off %d : %d\n",rb,off,(((int32_t)(rxF[off])*rxF[off])+((int32_t)(rxF[off+1])*rxF[off+1])));
              /*
                if ((phy_vars_ue->frame_rx&0x3ff) == 0)
                printf("rb %d, off %d : %d\n",rb,off,((rxF[off]*rxF[off])+(rxF[off+1]*rxF[off+1])));
              */
              off+=12;

              if (off>=(phy_vars_ue->lte_frame_parms.ofdm_symbol_size<<1))
                off = (1+k)<<1;

            }

            /*
            if ((eNB_offset==0)&&(l==0)) {
            for (i=0;i<6;i++,off2+=4)
            phy_vars_ue->PHY_measurements.rssi += ((rxF[off2]*rxF[off2])+(rxF[off2+1]*rxF[off2+1]));
            if (off2==(phy_vars_ue->lte_frame_parms.ofdm_symbol_size<<2))
            off2=4;
            for (i=0;i<6;i++,off2+=4)
            phy_vars_ue->PHY_measurements.rssi += ((rxF[off2]*rxF[off2])+(rxF[off2+1]*rxF[off2+1]));
            }
            */
            //    printf("slot %d, rb %d => rsrp %d, rssi %d\n",slot,rb,phy_vars_ue->PHY_measurements.rsrp[eNB_offset],phy_vars_ue->PHY_measurements.rssi);
          }
        }
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      }

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      // 2 RE per PRB
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      //      phy_vars_ue->PHY_measurements.rsrp[eNB_offset]/=(24*phy_vars_ue->lte_frame_parms.N_RB_DL);
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      phy_vars_ue->PHY_measurements.rsrp[eNB_offset]/=(2*phy_vars_ue->lte_frame_parms.N_RB_DL*phy_vars_ue->lte_frame_parms.ofdm_symbol_size);
352
      //      LOG_I(PHY,"eNB: %d, RSRP: %d \n",eNB_offset,phy_vars_ue->PHY_measurements.rsrp[eNB_offset]);
353
      if (eNB_offset == 0) {
354 355 356 357
        //  phy_vars_ue->PHY_measurements.rssi/=(24*phy_vars_ue->lte_frame_parms.N_RB_DL);
        //  phy_vars_ue->PHY_measurements.rssi*=rx_power_correction;
        //  phy_vars_ue->PHY_measurements.rssi=phy_vars_ue->PHY_measurements.rsrp[0]*24/2;
        phy_vars_ue->PHY_measurements.rssi=phy_vars_ue->PHY_measurements.rsrp[0]*(12*phy_vars_ue->lte_frame_parms.N_RB_DL);
358
      }
359

360
      if (phy_vars_ue->PHY_measurements.rssi>0)
361
        phy_vars_ue->PHY_measurements.rsrq[eNB_offset] = 100*phy_vars_ue->PHY_measurements.rsrp[eNB_offset]*phy_vars_ue->lte_frame_parms.N_RB_DL/phy_vars_ue->PHY_measurements.rssi;
362
      else
363 364
        phy_vars_ue->PHY_measurements.rsrq[eNB_offset] = -12000;

365
      //((200*phy_vars_ue->PHY_measurements.rsrq[eNB_offset]) + ((1024-200)*100*phy_vars_ue->PHY_measurements.rsrp[eNB_offset]*phy_vars_ue->lte_frame_parms.N_RB_DL/phy_vars_ue->PHY_measurements.rssi))>>10;
366
    } else { // Do abstraction of RSRP and RSRQ
367
      phy_vars_ue->PHY_measurements.rssi = phy_vars_ue->PHY_measurements.rx_power_avg[0];
368
      // dummay value for the moment
369
      phy_vars_ue->PHY_measurements.rsrp[eNB_offset] = -93 ;
370
      phy_vars_ue->PHY_measurements.rsrq[eNB_offset] = 3;
371 372

    }
373

374
#ifdef DEBUG_MEAS
375

376
    //    if (slot == 0) {
377

378
      if (eNB_offset == 0)
379
        LOG_I(PHY,"[UE %d] Frame %d, slot %d RRC Measurements => rssi %3.1f dBm (digital: %3.1f dB, gain %d), N0 %d dBm\n",phy_vars_ue->Mod_id,
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              phy_vars_ue->frame_rx,slot,10*log10(phy_vars_ue->PHY_measurements.rssi)-phy_vars_ue->rx_total_gain_dB,
              10*log10(phy_vars_ue->PHY_measurements.rssi),
              phy_vars_ue->rx_total_gain_dB,
              phy_vars_ue->PHY_measurements.n0_power_tot_dBm);

385
      LOG_I(PHY,"[UE %d] Frame %d, slot %d RRC Measurements (idx %d, Cell id %d) => rsrp: %3.1f dBm/RE (%d), rsrq: %3.1f dB\n",
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            phy_vars_ue->Mod_id,
            phy_vars_ue->frame_rx,slot,eNB_offset,
            (eNB_offset>0) ? phy_vars_ue->PHY_measurements.adj_cell_id[eNB_offset-1] : phy_vars_ue->lte_frame_parms.Nid_cell,
            10*log10(phy_vars_ue->PHY_measurements.rsrp[eNB_offset])-phy_vars_ue->rx_total_gain_dB,
            phy_vars_ue->PHY_measurements.rsrp[eNB_offset],
            (10*log10(phy_vars_ue->PHY_measurements.rsrq[eNB_offset])));
      //LOG_D(PHY,"RSRP_total_dB: %3.2f \n",(dB_fixed_times10(phy_vars_ue->PHY_measurements.rsrp[eNB_offset])/10.0)-phy_vars_ue->rx_total_gain_dB-dB_fixed(phy_vars_ue->lte_frame_parms.N_RB_DL*12));

      //LOG_D(PHY,"RSRP_dB: %3.2f \n",(dB_fixed_times10(phy_vars_ue->PHY_measurements.rsrp[eNB_offset])/10.0));
      //LOG_D(PHY,"gain_loss_dB: %d \n",phy_vars_ue->rx_total_gain_dB);
      //LOG_D(PHY,"gain_fixed_dB: %d \n",dB_fixed(phy_vars_ue->lte_frame_parms.N_RB_DL*12));

398
      //    }
399

400 401 402
#endif
  }

403 404 405
}

void lte_ue_measurements(PHY_VARS_UE *phy_vars_ue,
406 407 408 409 410 411
                         unsigned int subframe_offset,
                         unsigned char N0_symbol,
                         unsigned char abstraction_flag)
{


412
  int aarx,aatx,eNB_id=0; //,gain_offset=0;
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  //int rx_power[NUMBER_OF_CONNECTED_eNB_MAX];
  int i;
  unsigned int limit,subband;
416
#if defined(__x86_64__) || defined(__i386__)
417
  __m128i *dl_ch0_128,*dl_ch1_128;
418 419 420
#elif defined(__arm__)
  int16x8_t *dl_ch0_128, *dl_ch1_128;
#endif
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  int *dl_ch0,*dl_ch1;
  LTE_DL_FRAME_PARMS *frame_parms = &phy_vars_ue->lte_frame_parms;
  int nb_subbands,subband_size,last_subband_size;
  int N_RB_DL = frame_parms->N_RB_DL;

  switch (N_RB_DL) {
  case 6:
    nb_subbands = 6;
    subband_size = 12;
    last_subband_size = 0;
    break;

  default:
  case 25:
    nb_subbands = 7;
    subband_size = 4*12;
    last_subband_size = 12;
    break;

  case 50:
    nb_subbands = 9;
    subband_size = 6*12;
    last_subband_size = 2*12;
    break;

  case 100:
    nb_subbands = 13;
    subband_size = 8*12;
    last_subband_size = 4*12;
    break;
  }

  // signal measurements
  for (eNB_id=0; eNB_id<phy_vars_ue->n_connected_eNB; eNB_id++) {
    for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
      for (aatx=0; aatx<frame_parms->nb_antennas_tx_eNB; aatx++) {
        phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx] =
          (signal_energy_nodc(&phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][(aatx<<1) + aarx][0],
                              (N_RB_DL*12)));
        //- phy_vars_ue->PHY_measurements.n0_power[aarx];

        if (phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx]<0)
          phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx] = 0; //phy_vars_ue->PHY_measurements.n0_power[aarx];

        phy_vars_ue->PHY_measurements.rx_spatial_power_dB[eNB_id][aatx][aarx] = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx]);

        if (aatx==0)
          phy_vars_ue->PHY_measurements.rx_power[eNB_id][aarx] = phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx];
        else
          phy_vars_ue->PHY_measurements.rx_power[eNB_id][aarx] += phy_vars_ue->PHY_measurements.rx_spatial_power[eNB_id][aatx][aarx];
      } //aatx

      phy_vars_ue->PHY_measurements.rx_power_dB[eNB_id][aarx] = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.rx_power[eNB_id][aarx]);

      if (aarx==0)
        phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id] = phy_vars_ue->PHY_measurements.rx_power[eNB_id][aarx];
      else
        phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id] += phy_vars_ue->PHY_measurements.rx_power[eNB_id][aarx];
    } //aarx

    phy_vars_ue->PHY_measurements.rx_power_tot_dB[eNB_id] = (unsigned short) dB_fixed(phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id]);

  } //eNB_id

  // filter to remove jitter
  if (phy_vars_ue->init_averaging == 0) {
    for (eNB_id = 0; eNB_id < phy_vars_ue->n_connected_eNB; eNB_id++)
      phy_vars_ue->PHY_measurements.rx_power_avg[eNB_id] = (int)
          (((k1*((long long int)(phy_vars_ue->PHY_measurements.rx_power_avg[eNB_id]))) +
            (k2*((long long int)(phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id]))))>>10);

    phy_vars_ue->PHY_measurements.n0_power_avg = (int)
        (((k1*((long long int) (phy_vars_ue->PHY_measurements.n0_power_avg))) +
          (k2*((long long int) (phy_vars_ue->PHY_measurements.n0_power_tot))))>>10);
  } else {
    for (eNB_id = 0; eNB_id < phy_vars_ue->n_connected_eNB; eNB_id++)
      phy_vars_ue->PHY_measurements.rx_power_avg[eNB_id] = phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id];

    phy_vars_ue->PHY_measurements.n0_power_avg = phy_vars_ue->PHY_measurements.n0_power_tot;
    phy_vars_ue->init_averaging = 0;
  }

  for (eNB_id = 0; eNB_id < phy_vars_ue->n_connected_eNB; eNB_id++) {
    phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id] = dB_fixed( phy_vars_ue->PHY_measurements.rx_power_avg[eNB_id]);
    phy_vars_ue->PHY_measurements.wideband_cqi_tot[eNB_id] = dB_fixed2(phy_vars_ue->PHY_measurements.rx_power_tot[eNB_id],phy_vars_ue->PHY_measurements.n0_power_tot);
    phy_vars_ue->PHY_measurements.wideband_cqi_avg[eNB_id] = dB_fixed2(phy_vars_ue->PHY_measurements.rx_power_avg[eNB_id],phy_vars_ue->PHY_measurements.n0_power_avg);
    phy_vars_ue->PHY_measurements.rx_rssi_dBm[eNB_id] = phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id] - phy_vars_ue->rx_total_gain_dB;
#ifdef DEBUG_MEAS
509
    LOG_I(PHY,"[eNB %d] lte_ue_measurements: RSSI %d dBm, RSSI (digital) %d dB\n",
510 511
          eNB_id,phy_vars_ue->PHY_measurements.rx_rssi_dBm[eNB_id],
          phy_vars_ue->PHY_measurements.rx_power_avg_dB[eNB_id]);
512
#endif
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  }

  phy_vars_ue->PHY_measurements.n0_power_avg_dB = dB_fixed( phy_vars_ue->PHY_measurements.n0_power_avg);

  for (eNB_id = 0; eNB_id < phy_vars_ue->n_connected_eNB; eNB_id++) {
    if (frame_parms->mode1_flag==0) {
      // cqi/pmi information

      for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
        dl_ch0    = &phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][aarx][4];
        dl_ch1    = &phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][2+aarx][4];

        for (subband=0; subband<nb_subbands; subband++) {

          // cqi
          if (aarx==0)
            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband]=0;

          if ((subband<(nb_subbands-1))||(N_RB_DL==6)) {
            /*for (i=0;i<48;i++)
            msg("subband %d (%d) : %d,%d\n",subband,i,((short *)dl_ch0)[2*i],((short *)dl_ch0)[1+(2*i)]);
            */
            phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband] =
              (signal_energy_nodc(dl_ch0,subband_size) + signal_energy_nodc(dl_ch1,subband_size));

            if ( phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband] < 0)
              phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband]=0;

            /*
            else
            phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband]-=phy_vars_ue->PHY_measurements.n0_power[aarx];
            */

            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband] += phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband];
            phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],
                phy_vars_ue->PHY_measurements.n0_power[aarx]);
          } else { // this is for the last subband which is smaller in size
            //      for (i=0;i<12;i++)
            //        printf("subband %d (%d) : %d,%d\n",subband,i,((short *)dl_ch0)[2*i],((short *)dl_ch0)[1+(2*i)]);
            phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband] = (signal_energy_nodc(dl_ch0,last_subband_size) +
                signal_energy_nodc(dl_ch1,last_subband_size)); // - phy_vars_ue->PHY_measurements.n0_power[aarx];
            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband] += phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband];
            phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],
                phy_vars_ue->PHY_measurements.n0_power[aarx]);
          }

          dl_ch1+=subband_size;
          dl_ch0+=subband_size;
          //    msg("subband_cqi[%d][%d][%d] => %d (%d dB)\n",eNB_id,aarx,subband,phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband]);
        }

      }

      for (subband=0; subband<nb_subbands; subband++) {
        phy_vars_ue->PHY_measurements.subband_cqi_tot_dB[eNB_id][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband],phy_vars_ue->PHY_measurements.n0_power_tot);
        //    msg("subband_cqi_tot[%d][%d] => %d dB (n0 %d)\n",eNB_id,subband,phy_vars_ue->PHY_measurements.subband_cqi_tot_dB[eNB_id][subband],phy_vars_ue->PHY_measurements.n0_power_tot);
569 570 571
      }

      for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
572
        // skip the first 4 RE due to interpolation filter length of 5 (not possible to skip 5 due to 128i alignment, must be multiple of 128bit)
573 574

#if defined(__x86_64__) || defined(__i386__)
575
       __m128i pmi128_re,pmi128_im,mmtmpPMI0,mmtmpPMI1 /* ,mmtmpPMI2,mmtmpPMI3 */ ;
576

577 578
        dl_ch0_128    = (__m128i *)&phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][aarx][4];
        dl_ch1_128    = (__m128i *)&phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][2+aarx][4];
579 580
#elif defined(__arm__)
        int32x4_t pmi128_re,pmi128_im,mmtmpPMI0,mmtmpPMI1,mmtmpPMI0b,mmtmpPMI1b;
581

582 583 584 585
        dl_ch0_128    = (int16x8_t *)&phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][aarx][4];
        dl_ch1_128    = (int16x8_t *)&phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][2+aarx][4];

#endif
586 587 588 589
        for (subband=0; subband<nb_subbands; subband++) {


          // pmi
590
#if defined(__x86_64__) || defined(__i386__)
591 592
          pmi128_re = _mm_setzero_si128();
          pmi128_im = _mm_setzero_si128();
593 594 595 596
#elif defined(__arm__)
          pmi128_re = vdupq_n_s32(0);
	  pmi128_im = vdupq_n_s32(0);
#endif
597 598 599 600 601 602 603 604 605 606 607
          // limit is the number of groups of 4 REs in a subband (12 = 4 RBs, 3 = 1 RB)
          // for 5 MHz channelization, there are 7 subbands, 6 of size 4 RBs and 1 of size 1 RB
          if ((N_RB_DL==6) || (subband<(nb_subbands-1)))
            limit = subband_size>>2;
          else
            limit = last_subband_size>>2;

          for (i=0; i<limit; i++) {

            // For each RE in subband perform ch0 * conj(ch1)
            // multiply by conjugated channel
608
#if defined(__x86_64__) || defined(__i386__)
609 610 611 612 613 614 615 616
            mmtmpPMI1 = _mm_shufflelo_epi16(dl_ch1_128[0],_MM_SHUFFLE(2,3,0,1));//_MM_SHUFFLE(2,3,0,1)
            mmtmpPMI1 = _mm_shufflehi_epi16(mmtmpPMI1,_MM_SHUFFLE(2,3,0,1));
            mmtmpPMI1 = _mm_sign_epi16(mmtmpPMI1,*(__m128i*)&conjugate[0]);
            mmtmpPMI1 = _mm_madd_epi16(mmtmpPMI1,dl_ch0_128[0]);
            // mmtmpPMI1 contains imag part of 4 consecutive outputs (32-bit)

            pmi128_re = _mm_add_epi32(pmi128_re,mmtmpPMI0);
            pmi128_im = _mm_add_epi32(pmi128_im,mmtmpPMI1);
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#elif defined(__arm__)
            mmtmpPMI0 = vmull_s16(((int16x4_t*)dl_ch0_128)[0], ((int16x4_t*)dl_ch1_128)[0]);
            mmtmpPMI1 = vmull_s16(((int16x4_t*)dl_ch0_128)[1], ((int16x4_t*)dl_ch1_128)[1]);
            pmi128_re = vqaddq_s32(pmi128_re,vcombine_s32(vpadd_s32(vget_low_s32(mmtmpPMI0),vget_high_s32(mmtmpPMI0)),vpadd_s32(vget_low_s32(mmtmpPMI1),vget_high_s32(mmtmpPMI1))));

            mmtmpPMI0b = vmull_s16(vrev32_s16(vmul_s16(((int16x4_t*)dl_ch0_128)[0],*(int16x4_t*)conjugate)), ((int16x4_t*)dl_ch1_128)[0]);
            mmtmpPMI1b = vmull_s16(vrev32_s16(vmul_s16(((int16x4_t*)dl_ch0_128)[1],*(int16x4_t*)conjugate)), ((int16x4_t*)dl_ch1_128)[1]);
            pmi128_im = vqaddq_s32(pmi128_im,vcombine_s32(vpadd_s32(vget_low_s32(mmtmpPMI0b),vget_high_s32(mmtmpPMI0b)),vpadd_s32(vget_low_s32(mmtmpPMI1b),vget_high_s32(mmtmpPMI1b))));

#endif
627 628 629 630 631 632 633 634 635 636 637
            dl_ch0_128++;
            dl_ch1_128++;
          }

          phy_vars_ue->PHY_measurements.subband_pmi_re[eNB_id][subband][aarx] = (((int *)&pmi128_re)[0] + ((int *)&pmi128_re)[1] + ((int *)&pmi128_re)[2] + ((int *)&pmi128_re)[3])>>2;
          phy_vars_ue->PHY_measurements.subband_pmi_im[eNB_id][subband][aarx] = (((int *)&pmi128_im)[0] + ((int *)&pmi128_im)[1] + ((int *)&pmi128_im)[2] + ((int *)&pmi128_im)[3])>>2;
          phy_vars_ue->PHY_measurements.wideband_pmi_re[eNB_id][aarx] += phy_vars_ue->PHY_measurements.subband_pmi_re[eNB_id][subband][aarx];
          phy_vars_ue->PHY_measurements.wideband_pmi_im[eNB_id][aarx] += phy_vars_ue->PHY_measurements.subband_pmi_im[eNB_id][subband][aarx];
        } // subband loop
      } // rx antenna loop
    }  // if frame_parms->mode1_flag == 0
638
    else {
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      // cqi information only for mode 1
      for (aarx=0; aarx<frame_parms->nb_antennas_rx; aarx++) {
        dl_ch0    = &phy_vars_ue->lte_ue_common_vars.dl_ch_estimates[eNB_id][aarx][4];

        for (subband=0; subband<7; subband++) {

          // cqi
          if (aarx==0)
            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband]=0;

          if (subband<6) {
            //      for (i=0;i<48;i++)
            //        printf("subband %d (%d) : %d,%d\n",subband,i,((short *)dl_ch0)[2*i],((short *)dl_ch0)[1+(2*i)]);
            phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband] =
              (signal_energy_nodc(dl_ch0,48) ) - phy_vars_ue->PHY_measurements.n0_power[aarx];

            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband] += phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband];
            phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],
                phy_vars_ue->PHY_measurements.n0_power[aarx]);
          } else {
            //      for (i=0;i<12;i++)
            //        printf("subband %d (%d) : %d,%d\n",subband,i,((short *)dl_ch0)[2*i],((short *)dl_ch0)[1+(2*i)]);
            phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband] = (signal_energy_nodc(dl_ch0,12) ) - phy_vars_ue->PHY_measurements.n0_power[aarx];
            phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband] += phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband];
            phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],
                phy_vars_ue->PHY_measurements.n0_power[aarx]);
          }

          dl_ch1+=48;
          //    msg("subband_cqi[%d][%d][%d] => %d (%d dB)\n",eNB_id,aarx,subband,phy_vars_ue->PHY_measurements.subband_cqi[eNB_id][aarx][subband],phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][aarx][subband]);
        }
      }

      for (subband=0; subband<nb_subbands; subband++) {
        phy_vars_ue->PHY_measurements.subband_cqi_tot_dB[eNB_id][subband] = dB_fixed2(phy_vars_ue->PHY_measurements.subband_cqi_tot[eNB_id][subband],phy_vars_ue->PHY_measurements.n0_power_tot);
      }
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    }

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    phy_vars_ue->PHY_measurements.rank[eNB_id] = 0;

    for (i=0; i<nb_subbands; i++) {
      phy_vars_ue->PHY_measurements.selected_rx_antennas[eNB_id][i] = 0;

      if (frame_parms->nb_antennas_rx>1) {
        if (phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][0][i] >= phy_vars_ue->PHY_measurements.subband_cqi_dB[eNB_id][1][i])
          phy_vars_ue->PHY_measurements.selected_rx_antennas[eNB_id][i] = 0;
        else
          phy_vars_ue->PHY_measurements.selected_rx_antennas[eNB_id][i] = 1;
      } else
        phy_vars_ue->PHY_measurements.selected_rx_antennas[eNB_id][i] = 0;
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    }

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    // if(eNB_id==0)
    // printf("in lte_ue_measurements: selected rx_antenna[eNB_id==0]:%u\n", phy_vars_ue->PHY_measurements.selected_rx_antennas[eNB_id][i]);
  }  // eNB_id loop
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#if defined(__x86_64__) || defined(__i386__)
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  _mm_empty();
  _m_empty();
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#endif
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}
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void lte_ue_measurements_emul(PHY_VARS_UE *phy_vars_ue,uint8_t last_slot,uint8_t eNB_id)
{
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  msg("[PHY] EMUL UE lte_ue_measurements_emul last slot %d, eNB_id %d\n",last_slot,eNB_id);
}
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