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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** |
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17 @file |
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18 @internalTechnology |
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19 |
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20 */ |
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21 |
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22 #include "RRLP-Messages.h" |
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23 #include "rrlpmeasureposrequest.h" |
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24 #include "supldevloggermacros.h" |
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25 #include "suplrrlpasn1common.h" |
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26 #include <math.h> |
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27 |
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28 /** |
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29 Static factory constructor |
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30 */ |
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31 EXPORT_C CRrlpMeasurePositionRequest* CRrlpMeasurePositionRequest::NewL() |
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32 { |
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33 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::NewL() Begin\n"); |
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34 CRrlpMeasurePositionRequest* self = new (ELeave) CRrlpMeasurePositionRequest(); |
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35 CleanupStack::PushL(self); |
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36 self->ConstructL(); |
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37 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::NewL() End\n"); |
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38 CleanupStack::Pop(self); |
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39 return self; |
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40 } |
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41 |
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42 /** |
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43 Default constructor |
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44 */ |
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45 CRrlpMeasurePositionRequest::CRrlpMeasurePositionRequest() |
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46 : CRrlpMessageBase(ERrlpMeasurePositionReq, EFalse) |
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47 { |
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48 } |
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49 |
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50 /** |
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51 Second stage constructor |
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52 */ |
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53 void CRrlpMeasurePositionRequest::ConstructL() |
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54 { |
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55 } |
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56 |
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57 /** |
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58 Destructor |
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59 */ |
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60 CRrlpMeasurePositionRequest::~CRrlpMeasurePositionRequest() |
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61 { |
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62 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::~CRrlpMeasurePositionRequest() Begin\n"); |
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63 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::~CRrlpMeasurePositionRequest() End\n"); |
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64 } |
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65 |
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66 /** |
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67 PositionInstruct() |
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68 |
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69 Populates the Requested Positioning Methods and Quality according to the |
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70 Positioning Instructions component of the Measure Position Request message. |
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71 |
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72 Note that the field Multiple Sets is ignored (indicates if multiple |
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73 information sets may be sent if the device supports this GaNSS feature. |
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74 |
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75 Note also that Environment Characterization component is also ignored. This |
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76 relates to expected multipath and NLOS in the current area. |
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77 |
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78 @param aQuality QoP, populated as per received PositionInstruction parameters |
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79 @param aMethod Request method, populated according to received PositionInstruction parameters |
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80 @return error indication, KErrNone otherwise |
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81 */ |
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82 EXPORT_C TInt CRrlpMeasurePositionRequest::GetPositionInstruct(TLbsNetPosRequestQuality& aQuality, TLbsNetPosRequestMethod& aMethod) |
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83 { |
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84 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::PositionInstruct() Begin\n"); |
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85 __ASSERT_DEBUG(iData->component.u.msrPositionReq != NULL, User::Invariant()); |
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86 |
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87 ASN1T_MsrPosition_Req* msgBody = iData->component.u.msrPositionReq; |
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88 |
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89 TInt index = 0; |
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90 TInt uncertainty = 0; |
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91 TBool uncertaintySpecified = ETrue; |
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92 TLbsNetPosMethod posMethods[4]; |
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93 |
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94 // populate aMethod according to requested positioning methods |
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95 TBool gpsSupported = (msgBody->positionInstruct.positionMethod != PositionMethod::eotd); |
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96 TBool eotdSupported = (msgBody->positionInstruct.positionMethod != PositionMethod::gps); |
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97 |
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98 // build an array of requested pos methods, and set the uncertainty value |
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99 switch (msgBody->positionInstruct.methodType.t) |
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100 { |
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101 case T_MethodType_msAssisted: |
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102 if (gpsSupported) |
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103 { |
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104 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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105 ++index; |
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106 } |
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107 if (eotdSupported) |
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108 { |
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109 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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110 ++index; |
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111 } |
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112 //Accuracy is an optional parameter in the case of TA |
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113 if (msgBody->positionInstruct.methodType.u.msAssisted->m.accuracyPresent) |
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114 { |
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115 uncertainty = msgBody->positionInstruct.methodType.u.msAssisted->accuracy; |
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116 } |
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117 else |
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118 { |
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119 //if accuracy is not being specified |
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120 uncertaintySpecified = EFalse; |
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121 } |
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122 break; |
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123 |
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124 case T_MethodType_msBased: |
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125 if (gpsSupported) |
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126 { |
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127 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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128 ++index; |
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129 } |
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130 if (eotdSupported) |
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131 { |
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132 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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133 ++index; |
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134 } |
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135 |
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136 uncertainty = msgBody->positionInstruct.methodType.u.msBased; |
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137 break; |
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138 |
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139 case T_MethodType_msBasedPref: |
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140 if (gpsSupported) |
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141 { |
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142 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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143 ++index; |
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144 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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145 ++index; |
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146 } |
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147 if (eotdSupported) |
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148 { |
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149 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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150 ++index; |
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151 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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152 ++index; |
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153 } |
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154 uncertainty = msgBody->positionInstruct.methodType.u.msBasedPref; |
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155 break; |
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156 |
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157 case T_MethodType_msAssistedPref: |
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158 if (gpsSupported) |
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159 { |
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160 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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161 ++index; |
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162 posMethods[index].SetPosMethod(KLbsPositioningMeansGps, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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163 ++index; |
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164 } |
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165 if (eotdSupported) |
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166 { |
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167 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyNetwork | TPositionModuleInfo::ETechnologyAssisted); |
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168 ++index; |
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169 posMethods[index].SetPosMethod(KLbsPositioningMeansEotd, TPositionModuleInfo::ETechnologyTerminal | TPositionModuleInfo::ETechnologyAssisted); |
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170 ++index; |
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171 } |
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172 uncertainty = msgBody->positionInstruct.methodType.u.msAssistedPref; |
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173 break; |
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174 |
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175 default: |
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176 __ASSERT_DEBUG(0, User::Invariant()); |
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177 return KErrCorrupt; |
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178 } |
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179 |
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180 // populate the return pos method array |
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181 // index now indicates number of pos methods in the array |
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182 TInt err = aMethod.SetPosMethods(posMethods, index); |
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183 if (KErrNone != err) |
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184 { |
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185 return err; |
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186 } |
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187 |
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188 // set the uncertainty values |
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189 if (uncertaintySpecified) |
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190 { |
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191 TReal32 uncertMeters = UncertaintyToMeters(uncertainty); |
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192 aQuality.SetMinHorizontalAccuracy(uncertMeters); |
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193 aQuality.SetMinVerticalAccuracy(uncertMeters); |
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194 } |
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195 else |
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196 { |
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197 // Set accuracy to NaN to prompt LBS to use accuracies from its pre-configured |
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198 // profiles if available. |
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199 TRealX nan; |
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200 nan.SetNaN(); |
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201 aQuality.SetMinHorizontalAccuracy(nan); |
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202 aQuality.SetMinVerticalAccuracy(nan); |
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203 } |
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204 |
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205 // set the maximum fix time |
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206 TInt fixTimeSec; |
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207 fixTimeSec = 1 << msgBody->positionInstruct.measureResponseTime; |
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208 TTimeIntervalMicroSeconds timeMs(fixTimeSec * KLbsMilliSeconds); |
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209 aQuality.SetMaxFixTime(timeMs); |
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210 |
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211 // indicate if GPS Timing Of Cell Frames data has been requested |
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212 // see ASN1T_Rel98_MsrPosition_Req_Extension |
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213 if (msgBody->m.rel98_MsrPosition_Req_extensionPresent != 0 |
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214 && msgBody->rel98_MsrPosition_Req_extension.m.gpsTimeAssistanceMeasurementRequestPresent != 0) |
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215 { |
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216 aMethod.SetGpsTimingOfCellFramesRequested(ETrue); |
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217 } |
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218 |
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219 // no RRLP component to populate the max fix age parameter. |
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220 |
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221 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::PositionInstruct() End\n"); |
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222 return KErrNone; |
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223 } |
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224 |
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225 /** |
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226 UncertaintyToMeters() |
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227 |
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228 Converts from uncertainty code to meters, as defined in 3GPP TS 23.032: |
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229 uncertainty r = C( (1+x)^k - 1 ) |
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230 |
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231 r = uncertainty in meters |
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232 C = 10; |
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233 x = 0.1 |
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234 k = uncertainty code |
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235 |
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236 @param aUncertainty uncertainty value k, as per the above formula |
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237 @return TReal32 uncertainty in meters |
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238 */ |
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239 TReal32 CRrlpMeasurePositionRequest::UncertaintyToMeters(TInt aUncertainty) |
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240 { |
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241 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::UncertaintyToMeters() Begin\n"); |
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242 TReal64 r; |
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243 TReal64 xPow; |
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244 Math::Pow(xPow, 1.1, aUncertainty); |
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245 r = (xPow-1)*10; |
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246 |
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247 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::UncertaintyToMeters() End\n"); |
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248 return (TReal32)r; |
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249 } |
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250 |
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251 /** |
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252 AssistanceDataPresent() |
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253 |
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254 Indicates whether supported assistance data is present in the received message. |
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255 This implementation supports only receipt of GPS assistance data, hence this |
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256 method returns ETrue if GPS assistance data is present in the received content. |
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257 |
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258 @return ETrue if valid assistance data is present in the received message |
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259 */ |
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260 EXPORT_C TBool CRrlpMeasurePositionRequest::AssistanceDataPresent() |
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261 { |
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262 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::AssistanceDataPresent() Begin\n"); |
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263 __ASSERT_DEBUG(iData != NULL, User::Invariant()); |
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264 __ASSERT_DEBUG(!iIsOutgoingMessage, User::Invariant()); |
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265 __ASSERT_DEBUG(iData->component.u.msrPositionReq != NULL, User::Invariant()); |
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266 |
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267 if (iData->component.u.msrPositionReq->m.gps_AssistDataPresent == 0) |
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268 { |
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269 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::AssistanceDataPresent(EFalse) End\n"); |
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270 return EFalse; |
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271 } |
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272 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::AssistanceDataPresent(ETrue) End\n"); |
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273 return ETrue; |
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274 } |
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275 |
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276 /** |
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277 BuildAssistanceData() |
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278 |
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279 @param aDataMask populated to indicate what assistance data exists |
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280 @param aData reference to assistance data builder object to populate with |
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281 received assistance data |
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282 @return error indication, KErrNone otherwise |
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283 */ |
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284 EXPORT_C TInt CRrlpMeasurePositionRequest::BuildAssistanceData(TLbsAsistanceDataGroup& aDataMask, RLbsAssistanceDataBuilderSet& aAssistanceDataBuilderSet) |
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285 { |
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286 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::BuildAssistanceData() Begin\n"); |
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287 __ASSERT_DEBUG(iData != NULL, User::Invariant()); |
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288 __ASSERT_DEBUG(!iIsOutgoingMessage, User::Invariant()); |
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289 __ASSERT_DEBUG(iData->component.u.msrPositionReq != NULL, User::Invariant()); |
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290 |
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291 |
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292 // return immediately if no gps assistance data present |
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293 if (iData->component.u.msrPositionReq->m.gps_AssistDataPresent == 0) |
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294 { |
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295 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::BuildAssistanceData() End (no GPS data present)\n"); |
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296 return KErrNone; |
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297 } |
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298 |
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299 // pointer to the GPS Assistance Data component |
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300 ASN1T_ControlHeader& gpsData = iData->component.u.msrPositionReq->gps_AssistData.controlHeader; |
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301 |
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302 SUPLLOG(ELogP1, "CRrlpMeasurePositionRequest::BuildAssistanceData() End\n"); |
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303 return CRrlpMessageBase::BuildAssistanceData(aDataMask, aAssistanceDataBuilderSet, gpsData); |
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304 } |
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305 |
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306 |
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307 /** |
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308 GetExtendedReference() |
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309 |
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310 Populates aRrlpRef if Rel-5 Extended Reference is present in the received message |
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311 |
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312 @param aRrlpRef local copy of the session reference details |
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313 @return KErrNotFound if the extended reference parameters are not present, |
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314 KErrNone otherwise |
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315 */ |
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316 TInt CRrlpMeasurePositionRequest::GetExtendedReference(TRrlpReference& aRrlpRef) |
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317 { |
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318 __ASSERT_DEBUG(iData->component.u.msrPositionReq != NULL, User::Invariant()); |
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319 |
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320 if (iData->component.u.msrPositionReq->m.rel5_MsrPosition_Req_extensionPresent != 0) |
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321 { |
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322 aRrlpRef.aRel5EntendedRefPresent = ETrue; |
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323 aRrlpRef.aRel5SmlcCode = iData->component.u.msrPositionReq->rel5_MsrPosition_Req_extension.extended_reference.smlc_code; |
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324 aRrlpRef.aRel5TransactionId = iData->component.u.msrPositionReq->rel5_MsrPosition_Req_extension.extended_reference.transaction_ID; |
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325 } |
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326 else |
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327 { |
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328 return KErrNotFound; |
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329 } |
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330 return KErrNone; |
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331 } |