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  <xsd:element abstract="true" id="hssc_CorporateBondSecuritiesExcludingFairValueOptionMember" name="CorporateBondSecuritiesExcludingFairValueOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_CostMethodInvestmentNonvotingInterestOwnershipPercentage" name="CostMethodInvestmentNonvotingInterestOwnershipPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="hssc_CustomerRentalEquipmentMember" name="CustomerRentalEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element id="hssc_DebtInstrumentIssuePriceAsPercentageOfPrincipalAmount" name="DebtInstrumentIssuePriceAsPercentageOfPrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_DebtInstrumentPercentOfDebtHoldersRequiredToCallDebt" name="DebtInstrumentPercentOfDebtHoldersRequiredToCallDebt" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
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  <xsd:element id="hssc_DebtInstrumentPurchasePriceDueToChangeOfControlAsPercentageOfAggregatePrincipalAmount" name="DebtInstrumentPurchasePriceDueToChangeOfControlAsPercentageOfAggregatePrincipalAmount" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_DebtInstrumentUnregisteredNotePercentageExchangedForRegisteredNote" name="DebtInstrumentUnregisteredNotePercentageExchangedForRegisteredNote" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
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  <xsd:element id="hssc_DeferredTaxAssetsOperatingLossTaxCreditAndOtherCarryforwards" name="DeferredTaxAssetsOperatingLossTaxCreditAndOtherCarryforwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
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  <xsd:element id="hssc_DefinedContributionPlanEmployerMatchEmployeeContributionLevelTwo" name="DefinedContributionPlanEmployerMatchEmployeeContributionLevelTwo" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
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  <xsd:element id="hssc_FairValueMeasurementAssetAndLiabilityTransfersBetweenLevels" name="FairValueMeasurementAssetAndLiabilityTransfersBetweenLevels" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_FinancingReceivableStatedInterestRate" name="FinancingReceivableStatedInterestRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_FurnitureFixturesEquipmentAndOtherMember" name="FurnitureFixturesEquipmentAndOtherMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="hssc_HughesBroadbandMasterServicesAgreementMember" name="HughesBroadbandMasterServicesAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
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  <xsd:element abstract="true" id="hssc_HughesRetailGroupMember" name="HughesRetailGroupMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_HughesSystiqueCorporationMember" name="HughesSystiqueCorporationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_IncomeLossfromEquityMethodInvestmentsIncludingDiscontinuedOperations" name="IncomeLossfromEquityMethodInvestmentsIncludingDiscontinuedOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid" name="IncreaseDecreaseInCapitalExpendituresIncurredButNotYetPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_IntangibleAssetsFiniteLivedAndIndefiniteLivedPolicyTextBlock" name="IntangibleAssetsFiniteLivedAndIndefiniteLivedPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_InvestmentsInSubsidiaries" name="InvestmentsInSubsidiaries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="hssc_LeaseReceivableMember" name="LeaseReceivableMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_LossContingencyAttorneysFeesSoughtValue" name="LossContingencyAttorneysFeesSoughtValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="hssc_LossContingencyPendingClaimsValidityChallenged" name="LossContingencyPendingClaimsValidityChallenged" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_NetIncomeLossAttributableToNoncontrollingInterestEBITDAAdjustment" name="NetIncomeLossAttributableToNoncontrollingInterestEBITDAAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_Nimiq5Member" name="Nimiq5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_NoncashOrPartNoncashTransactionNetAssetsExchangePreferredStockRepurchase" name="NoncashOrPartNoncashTransactionNetAssetsExchangePreferredStockRepurchase" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="hssc_NumberOfFunctionalSolarArrayCircuits" name="NumberOfFunctionalSolarArrayCircuits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_NumberOfSatellitesInGeostationaryOrbitUtilizedByReportingEntity" name="NumberOfSatellitesInGeostationaryOrbitUtilizedByReportingEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_NumberOfSolarArrayCircuitsAffected" name="NumberOfSolarArrayCircuitsAffected" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_OneYearLondonInterbankOfferedRateMember" name="OneYearLondonInterbankOfferedRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_OperatingLeaseExpectedIncreaseInOperatingLeaseAssetsAndLIabilitiesAsPercentOfTotalAssetsPercent" name="OperatingLeaseExpectedIncreaseInOperatingLeaseAssetsAndLIabilitiesAsPercentOfTotalAssetsPercent" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_OperatingLeaseObligationsMember" name="OperatingLeaseObligationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_OtherComprehensiveIncomeIncomeLossfromInvestmentsinSubsidiariesArisingDuringPeriodNetofTax" name="OtherComprehensiveIncomeIncomeLossfromInvestmentsinSubsidiariesArisingDuringPeriodNetofTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_OtherComprehensiveIncomeLossNetofTaxExcludingOtherEquityComponents" name="OtherComprehensiveIncomeLossNetofTaxExcludingOtherEquityComponents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_OtherMajorCustomersMember" name="OtherMajorCustomersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_PercentageOwnershipInVariableInterestEntityByOtherRelatedParties" name="PercentageOwnershipInVariableInterestEntityByOtherRelatedParties" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_PreferredTrackingStockMember" name="PreferredTrackingStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_PrepaidExpenseAndDepositsAssetsCurrent" name="PrepaidExpenseAndDepositsAssetsCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="hssc_PrinciplesOfConsolidationAndBasisOfPresentationPolicyTextBlock" name="PrinciplesOfConsolidationAndBasisOfPresentationPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ProgressAmountsForSatelliteConstructionIncludingPrepaymentsUnderCapitalLeasesAndLaunchCostsMember" name="ProgressAmountsForSatelliteConstructionIncludingPrepaymentsUnderCapitalLeasesAndLaunchCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_QuetzSat1Member" name="QuetzSat1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_RUSServiceImplementationAgreementMember" name="RUSServiceImplementationAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_RealtimeDataLLCMember" name="RealtimeDataLLCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_Refundsandotherreceiptsrelatedtopropertyandequipment" name="Refundsandotherreceiptsrelatedtopropertyandequipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_RelatedPartyAdvancesMember" name="RelatedPartyAdvancesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" name="RelatedPartyTransactionsAgreementAutomaticRenewalPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity" name="RelatedPartyTransactionsAgreementRenewalNoticeRequiredbyReportingEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" name="RelatedPartyTransactionsAgreementRenewalOptionAdditionalTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementRenewalOptionTerm" name="RelatedPartyTransactionsAgreementRenewalOptionTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
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  <xsd:element id="hssc_RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" name="RelatedPartyTransactionsAgreementTermFromCommencementOfServiceDate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" name="RelatedPartyTransactionsAgreementTerminationNoticeRequiredByReportingEntity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" name="RelatedPartyTransactionsAgreementTerminationRequiredNoticePeriodFromRelatedPartyMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsGrantsReceivableByRelatedParty" name="RelatedPartyTransactionsGrantsReceivableByRelatedParty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="hssc_RelatedPartyTransactionsLesseeOperatingLeaseRealEstateMember" name="RelatedPartyTransactionsLesseeOperatingLeaseRealEstateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_RelatedPartyTransactionsLessorOperatingLeaseRealEstateMember" name="RelatedPartyTransactionsLessorOperatingLeaseRealEstateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" name="RelatedPartyTransactionsNumberOfDBSTranspondersAvailable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" name="RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" name="RelatedPartyTransactionsNumberOfDBSTranspondersReceivingServicesSublease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="hssc_RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" name="RelatedPartyTransactionsNumberOfOwnedSatellitesTransferred" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsPercentageOfEconomicInterestHeld" name="RelatedPartyTransactionsPercentageOfEconomicInterestHeld" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" name="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" name="RelatedPartyTransactionsRequiredMinimumNoticePeriodForTerminationOfSpecificService" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RelatedPartyTransactionsRequiredMinimumNoticePeriodforTerminationofAgreementAfterLeaseExtension" name="RelatedPartyTransactionsRequiredMinimumNoticePeriodforTerminationofAgreementAfterLeaseExtension" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RenewalOptionReductioninYears" name="RenewalOptionReductioninYears" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_RevenueNetReductionInPeriod" name="RevenueNetReductionInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_RevenueRemainingPerformanceObligationRecognitionInNextRollingTwelveMonthsPercentage" name="RevenueRemainingPerformanceObligationRecognitionInNextRollingTwelveMonthsPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="hssc_SESLatinAmericaMember" name="SESLatinAmericaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SPACEWAY3Member" name="SPACEWAY3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SalesAndServicesMember" name="SalesAndServicesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatelliteAndTrackingStockTransactionMember" name="SatelliteAndTrackingStockTransactionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatelliteCapacityLeaseAgreementMember" name="SatelliteCapacityLeaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatelliteRelatedEquipmentMember" name="SatelliteRelatedEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_SatelliteRelatedExpense" name="SatelliteRelatedExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatelliteRelatedObligationMember" name="SatelliteRelatedObligationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatelliteServicesAgreementMember" name="SatelliteServicesAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatellitesMember" name="SatellitesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SatellitesOwnedMember" name="SatellitesOwnedMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ScheduleOfConstructionInProgressTableTextBlock" name="ScheduleOfConstructionInProgressTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_ScheduleOfContractualObligationsTable" name="ScheduleOfContractualObligationsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_ScheduleOfDefinedContributionBenefitPlansDisclosuresLineItems" name="ScheduleOfDefinedContributionBenefitPlansDisclosuresLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ScheduleOfDepreciationExpenseTableTextBlock" name="ScheduleOfDepreciationExpenseTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ScheduleOfSatellitesTableTextBlock" name="ScheduleOfSatellitesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ScheduleofCostofSalesandResearchandDevelopmentCostsTableTextBlock" name="ScheduleofCostofSalesandResearchandDevelopmentCostsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_ScheduleofReconciliationofEBITDAtoIncomeLossFromContinuingOperationsbeforeIncomeTaxesTableTextBlock" name="ScheduleofReconciliationofEBITDAtoIncomeLossFromContinuingOperationsbeforeIncomeTaxesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SeniorSecuredNotes5.250PercentDue2026Member" name="SeniorSecuredNotes5.250PercentDue2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SeniorSecuredNotes6.50PercentDue2019Member" name="SeniorSecuredNotes6.50PercentDue2019Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SeniorUnsecuredNotes6.625PercentDue2026Member" name="SeniorUnsecuredNotes6.625PercentDue2026Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SeniorUnsecuredNotes7.625PercentDue2021Member" name="SeniorUnsecuredNotes7.625PercentDue2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_ServicesAndOtherRevenueMember" name="ServicesAndOtherRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_ServicesDesignDevelopmentAndConstructionMember" name="ServicesDesignDevelopmentAndConstructionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_ShareExchangeAgreementMember" name="ShareExchangeAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_SoftwareUsefulLife" name="SoftwareUsefulLife" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_SouthAndCentralAmericaMember" name="SouthAndCentralAmericaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_TaxCustsAndJobsActof2017IncompleteAccountingChangeInTaxRateProvisionalIncreaseDecreaseInAllowanceForForeignTaxCreditCarryover" name="TaxCustsAndJobsActof2017IncompleteAccountingChangeInTaxRateProvisionalIncreaseDecreaseInAllowanceForForeignTaxCreditCarryover" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TeleSatTransponderAgreementMember" name="TeleSatTransponderAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TelemetryTrackingAndControlAgreementMember" name="TelemetryTrackingAndControlAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_Telesat19VsatelliteMember" name="Telesat19VsatelliteMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TelesatCanadaMember" name="TelesatCanadaMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TerreStarAgreementMember" name="TerreStarAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TerreStarSolutionsInc.Member" name="TerreStarSolutionsInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="hssc_TotalNonoperatingIncomeExpenseInterestAndDebtExpenseAndIncomeLossFromEquityMethodInvestments" name="TotalNonoperatingIncomeExpenseInterestAndDebtExpenseAndIncomeLossFromEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="hssc_TransferOfLaunchServiceContracts" name="TransferOfLaunchServiceContracts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_TwoThousandTwentySixNotesMember" name="TwoThousandTwentySixNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="hssc_UnamortizedDebtIssuanceCostsMember" name="UnamortizedDebtIssuanceCostsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
