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annotate src/g23m-gprs/grlc/grlc_measf.c @ 302:0740b5ff15f6

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reconstructed L1_GPRS source imported from tcs211-l1-reconst
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 31 Oct 2017 03:42:35 +0000
parents 219afcfc6250
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : GPRS (8441)
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4 | Modul : GRLC
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : This module implements local functions for service
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18 | MEAS of entity GRLC.
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19 +-----------------------------------------------------------------------------
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20 */
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21
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22 #ifndef GRLC_MEASF_C
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23 #define GRLC_MEASF_C
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24 #endif /* #ifndef GRLC_MEASF_C */
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25
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26 #define ENTITY_GRLC
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27
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28 /*==== INCLUDES =============================================================*/
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29
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30 #include "typedefs.h"
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31 #include "vsi.h"
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32 #include "macdef.h"
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33 #include "gprs.h"
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34 #include "gsm.h"
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35 #include "ccdapi.h"
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36 #include "prim.h"
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37 #include "message.h"
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38 #include "grlc.h"
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39 #include "grlc_measf.h"
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40
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41 /*==== CONST ================================================================*/
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42
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43 #define I_LEVEL_MIN I_LEVEL_0
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44 #define I_LEVEL_0 0 /* i.lev. is greater than C */
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45 #define I_LEVEL_15 15 /* i.lev. is less than or equal to C - 28 dB */
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46 #define I_LEVEL_MAX I_LEVEL_15
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47 #define I_LEVEL_GAMMA_0_SKIPPED 0xF0 /* used for tracing */
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48 #define I_LEVEL_GAMMA_1_SKIPPED 0xF1 /* used for tracing */
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49 #define I_LEVEL_GAMMA_2_SKIPPED 0xF2 /* used for tracing */
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50 #define I_LEVEL_GAMMA_3_SKIPPED 0xF3 /* used for tracing */
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51 #define I_LEVEL_STATE_MISMATCH 0xFD /* used for tracing */
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52 #define I_LEVEL_IDX_TO_SMALL 0xFE /* used for tracing */
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53 #define I_LEVEL_NOT_AVAIL 0xFF /* used for tracing */
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54
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55 /*==== LOCAL VARS ===========================================================*/
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56
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57 /*==== LOCAL TYPES===========================================================*/
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58
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59 /*==== PUBLIC FUNCTIONS =====================================================*/
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60 /*
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61 +------------------------------------------------------------------------------
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62 | Function : meas_c_calc_mean
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63 +------------------------------------------------------------------------------
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64 | Description : This function calculates the mean of the received signal level
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65 | of the four normal bursts that compose a block. It returns
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66 | the amount of bursts with valid receibed signal values.
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67 |
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68 | Parameters : burst_level - receive signal level of the first valid downlink
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69 | PDCH radio block
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70 | radio_freq - radio frequency of TDMA frame within a
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71 | radio block
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72 | ss_block - mean of the received signal level
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73 | pb_rdc - Pb reduction
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74 |
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75 +------------------------------------------------------------------------------
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76 */
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77 GLOBAL UBYTE meas_c_calc_mean ( UBYTE *burst_level,
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78 USHORT *radio_freq,
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79 ULONG *ss_block,
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80 UBYTE *pb_rdc,
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81 T_CGRLC_freq_param *freq_param )
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82 {
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83 UBYTE i; /* used for counting */
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84 UBYTE vld_smpl = 0; /* valid measurement samples */
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85
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86 TRACE_FUNCTION( "meas_c_calc_mean" );
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87
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88 *pb_rdc = 0;
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89 *ss_block = 0;
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90
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91 /* add up all measurement data */
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92 for( i = 0; i < MAC_BURST_PER_BLOCK; i++ )
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93 {
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94 if( burst_level[i] NEQ MAC_RXLEV_NONE )
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95 {
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96 vld_smpl++;
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97
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98 *ss_block += burst_level[i];
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99
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100 if( !( grlc_data->tm.freq_param.pdch_hopping EQ FALSE AND
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101 grlc_data->tm.freq_param.bcch_arfcn EQ radio_freq[i] ) )
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102 {
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103 *pb_rdc += 1;
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104 }
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105 }
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106 }
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107
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108 /* calculate the mean */
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109 if( vld_smpl )
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110 {
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111 *ss_block = ( *ss_block * MEAS_ACRCY ) / vld_smpl;
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112 }
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113
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114 return( vld_smpl );
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115 } /* meas_c_calc_mean() */
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116
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117 /*
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118 +------------------------------------------------------------------------------
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119 | Function : meas_int_fill_rel_iLevel
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120 +------------------------------------------------------------------------------
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121 | Description : ...
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122 |
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123 | Parameters : ...
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124 |
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125 +------------------------------------------------------------------------------
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126 */
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127 GLOBAL void meas_int_fill_rel_iLevel ( UBYTE *v_ilev,
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128 UBYTE *ilev,
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129 UBYTE idx,
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130 USHORT c_raw_data_lev )
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131 {
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132 UBYTE val; /* holds interference level data */
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133
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134 if( grlc_data->meas.ilev.ilev[idx] NEQ CGRLC_ILEV_NONE )
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135 {
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136 if( c_raw_data_lev < grlc_data->meas.ilev.ilev[idx] * MEAS_ACRCY )
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137 {
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138 *ilev = I_LEVEL_MIN;
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139 }
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140 else
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141 {
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142 val = ( c_raw_data_lev - grlc_data->meas.ilev.ilev[idx] * MEAS_ACRCY ) /
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143 ( 2 * MEAS_ACRCY ) + 1;
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144
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145 if( val > I_LEVEL_MAX ) *ilev = I_LEVEL_MAX;
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146 else *ilev = val;
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147 }
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148
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149 *v_ilev = TRUE;
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150 }
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151 else
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152 {
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153 *v_ilev = FALSE;
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154 }
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155 } /* meas_int_fill_rel_iLevel() */