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12.6.4.3.1.4 SI2_63314 - Si2.GetSpbmCertificate - no trusted public key ID supported by SPBM
Test ID SI2_63314 Test objectives To verify that the SPBM returns an error, when none of the trusted public key identifiers sent in the aSspPkIdListForSpbmVerification is supported by the SPBM. Configuration reference CSI2_6411 Initial conditions The SI2_114_command_01 is generated by using the SI2_114_command configur...
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12.6.4.3.1.6 SI2_64316 - Si2.GetSpbmCertificate - no supported encryption algorithm
Test ID SI2_64316 Test objectives To verify that the SPBM returns an error, when none of the algorithm identifiers received in the aCipherAlgorithmList is supported. Configuration reference CSI2_6411 Initial conditions The SI2_116_command_01 is generated by using the SI2_116_command configuration file. The SI2_116_resp...
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12.6.4.3.1.7 SI2_64317 - Si2.GetSpbmCertificate - no supported SKID for SPBM verification
Test ID SI2_64317 Test objectives To verify that the SPBM returns the error code eNotSupportedPkIdSpbmVerification when aSspPkIdListForSpbmVerification is not supported. Configuration reference CSI2_6411 Initial conditions The SI2_117_command_01 is generated by using the SI2_117_command configuration file. The SI2_117_...
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12.6.4.3.1.8 SI2_64318 - Si2.GetSpbmCertificate - no supported SKID for SPBL verification
Test ID SI2_64318 Test objectives To verify that the SPBM returns the error code eNotSupportedPkIdSpblVerification when aSspPkIdListForSpblVerification is not supported. Configuration reference CSI2_6411 Initial conditions The SI2_118_command_01 is generated by using the SI2_118_command configuration file. The SI2_118_...
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12.6.4.3.1.9 SI2_64319 - Si2.GetSpbmCertificate - no selection of a family identifier
Test ID SI2_64319 Test objectives To verify that the SPBM returns eSpblSelectOneFamilyId with an error cause indicating that at least one family identifier shall be selected by the Secondary Platform Bundle Loader. Configuration reference CSI2_6411 Initial conditions The SI2_119_command_01 is generated by using the SI2...
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12.6.4.3.1.10 SI2_643110 - Si2.GetSpbmCertificate - no selection of an OID
Test ID SI2_643110 Test objectives To verify that the SPBM returns eSpblSelectOneOid with an error cause indicating that at least one custodian shall be selected by the SPBL. Configuration reference CSI2_6411 Initial conditions The SI2_1110_command_01 is generated by using the SI2_1110_command configuration file. The S...
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12.6.4.3.2 Si2.GetBoundSpbImage command and response handling
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12.6.4.3.2.1 SI2_64321 - Si2.GetBoundSpbImage - normal process
Test ID SI2_64321 Test objectives To verify that the LBA requests the SPBL bound image from the SPBM by sending an Si2GetBoundSpbImage command. Configuration reference CSI2_6411 Initial conditions The SI2_121_command_01 is generated by using the SI2_121_command configuration file. The SI2_121_response_01 is verified by...
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12.6.4.3.2.2 SI2_64322 - Si2.GetBoundSpbImage - no or invalid SSP credentials
Test ID SI2_64322 Test objectives To verify that the SPBM returns aSi2GetBoundSpbImageError with the error code eInvalidBoundSpbImage when the LBA requests the SPBL bound image from the SPBM by sending Si2GetBoundSpbImage command without SSP credentials or with invalid SSP credentials. Configuration reference CSI2_6411...
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12.6.4.3.2.3 SI2_64323 - Si2.GetBoundSpbImage - invalid aCodeM
Test ID SI2_64323 Test objectives To verify that the SPBM returns aSi2GetBoundSpbImageError with the error code eInvalidCodeM when the LBA requests the SPBL bound image from the SPBM by sending Si2GetBoundSpbImage command with an unknown aCodeM included in the SSP credentials. Configuration reference CSI2_6411 Initial ...
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12.6.4.3.2.4 SI2_64324 - Si2.GetBoundSpbImage - invalid SPBL certificates
Test ID SI2_64324 Test objectives To verify that the SPBM returns aSi2GetBoundSpbImageError with error code eInvalidSpblCertificate when the LBA requests the SPBL bound image from the SPBM by sending Si2GetBoundSpbImage command with an invalid certification path to the SPBL certificate. Configuration reference CSI2_641...
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12.6.4.3.2.5 SI2_64325 - Si2.GetBoundSpbImage - invalid ChallengeS
Test ID SI2_64325 Test objectives To verify that the SPBM returns a response containing aSi2GetBoundSpbImageError with error code eInvalidChallengeS when the LBA requests the SPBL bound image from the SPBM and the ChallengeS returned by the SPBL does not match the one generated by the SPBM. Configuration reference CSI2...
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12.6.4.3.2.6 SI2_64326 - Si2.GetBoundSpbImage - invalid selected SPB Image
Test ID SI2_64326 Test objectives To verify that the SPBM is checking the validity of the SPB for the iSSP. Configuration reference CSI2_6411 Initial conditions The SI2_126_command_01 is generated by using the SI2_126_command configuration file. The SI2_126_response_01 is verified by using the SI2_126_response configur...
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12.6.4.3.2.7 SI2_64327 - Si2.GetBoundSpbImage - invalid TransacId
Test ID SI2_64327 Test objectives To verify that the SPBM returns a response containing aSi2GetBoundSpbImageError with error code eInvalidBoundSpbImageByTransacId when the LBA requests the SPBL bound image from the SPBM by sending Si2GetBoundSpbImage command with an invalid referenced TransacId. Configuration reference...
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12.6.4.3.3 Si2.HandleNotification command and response handling
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12.6.4.3.3.1 SI2_64331 - Si2.HandleNotificationCommand - normal process
Test ID SI2_64333 Test objectives To verify that the "Si2HandleNotification" function is used by the LBA to send any notification about the result of the Secondary Platform Bundle management to the SPBM. Configuration reference CSI2_6411 Initial conditions The SI2_131_command_01 is generated by using the SI2_131_comman...
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12.6.4.4 Requirements not testable, implicitly verified or verified elsewhere
The following requirements are generated from descriptive text. An explicit verification is not possible but with correct execution of the related function the requirements can be handled as implicitly verified: RQ1206_001, RQ1206_072, RQ1206_073, RQ1206_074, RQ1206_075, RQ1206_076, RQ1206_077, RQ1206_078, RQ1206_079, ...
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12.6.5 Si3 interface
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12.6.5.1 Configurations
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12.6.5.1.1 CSI3_6511 - SPBL service - host A
Configuration ID CSI3_6511 Configuration description Other host domain (Tester) SSP host domain (SUT) SSP host Other host A Administation Administration gate Administration Administration gate SPBL application SPBL application gate SPBL service SPBL service gate
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12.6.5.1.2 SSP configuration
The SSP under test shall be configured by the SSP Manufacturer (SSPM).
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12.6.5.2 Procedures
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12.6.5.2.1 PSI3_6521 - Pipe session opening on the SPBL service gate
Procedure ID PSI3_6521 Objectives The other host A shall be able to open a pipe session to the SPBL service gate of the SSP host. SPBL service identifier is defined as the OFL service identifier in Global Platform OFL VNP Extension [16]. Configuration reference CSI3_6511 Initial conditions Test sequence Step Descriptio...
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12.6.5.3 Test descriptions
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12.6.5.3.1 Si3.GetSspInfo command and response handling
12.6.5.3.1.1 SI3_65311 - Si3.GetSspInfo command with SpbFamilyId and an OID for the custodian, SSP with configuration for aSpbFamilyId and aCustodianOid Test ID SI3_65311 Test objectives To verify that the SPBL application gate (Other Host) is able to retrieve the correct SSP Information by sending a Si3.GetSspInfo com...
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12.6.5.3.1.4 SI3_65314 - Si3.GetSspInfo command with empty parameters
Test ID SI3_65314 Test objectives To verify that the SPBL application gate (Other Host) is able to retrieve SSP Information by sending a Si3.GetSspInfo (GET_SSP_INFO) command with empty parameters to the SPBL service gate. Configuration reference CSI3_6511 ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 146 Release 15 Initial...
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12.6.5.3.2 Si3.SetSpbmCredential command and response handling
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12.6.5.3.2.1 SI3_65321 - Si3.SetSpbmCredential
Test ID SI3_65321 Test objectives To verify that the SPBL application gate (Other Host) is able to set SPBM Credentials by sending a Si3.SetSpbmCredential (ANY_SET_PARAMETER) to the SPBL Registry in the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully...
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12.6.5.3.3 Si3.LoadBoundSpbInfo command and response handling
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12.6.5.3.3.1 SI3_65331 - Si3.LoadBoundSpbInfo
Test ID SI3_65331 Test objectives To verify that the SPBL application gate (Other Host) is able to load bound SPB Information by sending a Si3.LoadBoundSpbInfo (OFL_DO_OPERATE) command to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully executed. ...
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12.6.5.3.4 Si3.LoadBoundSpbSds command and response handling
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12.6.5.3.4.1 SI3_65341 - Si3.LoadBoundSpbSds
Test ID SI3_65341 Test objectives To verify that the SPBL application gate (Other Host) is able to load bound SPB SDS by sending a Si3.LoadBoundSpbSds (OFL_CHANGE_SEGMENT) command to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The test SI3_65331 shall be successfully executed. Test seque...
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12.6.5.3.5 Si3.LoadBoundSpbSeg command and response handling
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12.6.5.3.5.1 SI3_65351 - Si3.LoadBoundSpbSeg
Test ID SI3_65351 Test objectives To verify that the SPBL application gate (Other Host) is able to load bound SPB Segment by sending a Si3.LoadBoundSpbSeg (OFL_LOAD_SEGMENT) command to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The test SI3_65341 shall be successfully executed. Test seq...
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12.6.5.3.6 Si3.GetSspCredential command and response handling
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12.6.5.3.6.1 SI3_65361 - Si3.GetSspCredential
Test ID SI3_65361 Test objectives To verify that the SPBL application gate (Other Host) is able to get SSP Credentials by sending a SI3.GetSspCredential (ANY_GET_PARAMETER) to the SPBL Registry in the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The test SI3_65321 shall be successfully execut...
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12.6.5.3.7 Si3.EnableSpb command and response handling
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12.6.5.3.7.1 SI3_65371 - Si3.EnableSpb
Test ID SI3_65371 Test objectives To verify that the SPBL application gate is able to enable a SPB by sending a Si3.EnableSpb (OFL_ENABLE_FIRMWARE) to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully executed. Test sequence Step Description Requir...
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12.6.5.3.7.2 SI3_65372 - Si3.EnableSpb based on TELECOM_CAPABILITY value
Test ID SI3_65372 Test objectives To verify that the SPBL application gate (Other Host) is able to enable no. of SPBs as defined in registry TELECOM_CAPABILITY.by sending a Si3.EnableSpb commands to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully...
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12.6.5.3.8 Si3.DisableSpb command and response handling
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12.6.5.3.8.1 SI3_65381 - Si3.DisableSpb
Test ID SI3_65381 Test objectives To verify that the SPBL application gate is able to disable a SPB by sending a Si3.DisableSpb (OFL_DISABLE_FIRMWARE) to the SPBL service gate. Configuration reference CSI3_6511 ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 149 Release 15 Initial conditions The procedure PSI3_6521 shall be s...
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12.6.5.3.9 Si3.DeleteSpb command and response handling
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12.6.5.3.9.1 SI3_65391 - Si3.DeleteSpb
Test ID SI3_65391 Test objectives To verify that the SPBL application gate is able to delete a SPB by sending a Si3.DeleteSpb (OFL_DELETE_SESSION) to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall execute successfully. Test sequence Step Description Requirement...
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12.6.5.3.10 Si3.GetSpbMetadata command and response handling
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12.6.5.3.10.1 SI3_653101 - Si3.GetSpbMetadata
Test ID SI3_653101 Test objectives To verify that the SPBL application gate (Other Host) shall be able to retrieve SPB metadata by sending a Si3.GetSpbMetadata (GET_SPB_METADATA) command to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully executed...
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12.6.5.3.11 Si3.UpdateSpbState command and response handling
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12.6.5.3.11.1 SI3_653111 - Si3.UpdateSpbState
Test ID SI3_653111 Test objectives To verify that the SPBL application gate (Other Host) is able to update SpbId by sending a Si3.UpdateSpbState (ANY_SET_PARAMETER) command to the SPBL service gate. Configuration reference CSI3_6511 ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 150 Release 15 Initial conditions The procedur...
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12.6.5.3.12 Si3.GetSpbState command and response handling
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12.6.5.3.12.1 SI3_653121 - Si3.GetSpbState
Test ID SI3_653121 Test objectives To verify that the SPBL application gate (Other Host) is able to get the SPB state by sending a Si3.GetSpbState (ANY_SET_PARAMETER) command to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully executed. The test S...
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12.6.5.3.13 SI3_65313 - SPB Management Operations
Test ID SI3_65313 Test objectives To verify that the SPBL application gate (Other Host) is able to load SPB and perform SPB management operations by sending Si3 layer commands to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_6521 shall be successfully executed. Test sequ...
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12.6.5.3.14 SI3_65314 - Si3.SwitchSpb
Test ID SI3_65314 Test objectives To verify that the SPBL application gate (Other Host) shall be able to switch between different telecom SPBs by sending and perform SPB management operations by sending Si3 layer commands to the SPBL service gate. Configuration reference CSI3_6511 Initial conditions The procedure PSI3_...
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12.6.5.4 Requirements not testable, implicitly verified or verified elsewhere
The following requirements are generated from descriptive text. A verification by tests defined within the present document is not possible: RQ1206_004, RQ1206_022, RQ1206_055, RQ1206_056, RQ1206_188, RQ1206_189, RQ1206_196, RQ1206_205, RQ1206_206, RQ1206_207, RQ1206_208, RQ1206_209, RQ1206_210, RQ1206_211, RQ1206_213,...
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12.6.6 Si4 interface
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12.6.6.0 Si4 Principles
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12.6.6.0.1 Si4 tunneling over Si3 and Si2
Figure 12.1 illustrates the tunneling of the Si4 over Si2 and Si3. Figure 12.1: Security Protocol over Si2 and Si3
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12.6.6.0.2 Si4 security protocol abstract view
Figure 12.2 illustrates the handling of the Si4 security protocol between SPBL and SPBM. ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 154 Release 15 Figure 12.2: Si4 Security Protocol SPBL/SPB Manager The Protocol Data Unit (PDU) conveying the Si4 security protocol are generated by using Si3 and Si2 messages. All PDUs are ...
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12.6.6.0.3 Testing the Si4 SPBL service
Figure 12.3 illustrates the testing of the SPBL service (SUT) from the LBA (tester). The Tester emulates the SPBM. Figure 12.3: Si4 SPBL service For sake of simplicity, the returned status subsequent to any exchange are not showed. ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 155 Release 15
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12.6.6.0.4 Testing the Si4 SPB Manager service
Figure 12.4 illustrates the testing of the SPBM service(SUT) from the LBA (tester). The Tester emulates the SPBL. Figure 7: Si4 SPBM service For sake of simplicity, the returned status subsequent to any exchange are not showed.
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12.6.6.1 Configurations
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12.6.6.1.1 CSI4_6611 - LBA - SPBL (SUT)
Configuration ID CSI4_6611 Configuration description (Tester) LBA SPBL Si4
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12.6.6.1.2 CSI4_6612 - LBA - SPB Manager (SUT)
Configuration ID CSI4_Y12 Configuration description (Tester) LBA SPBM server Si4 ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 156 Release 15
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12.6.6.2 Procedures
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12.6.6.2.1 PSI4_6621 - session opening between SPBL and the SPB Manager
Procedure ID PSI4_6621 Procedure objectives The LBA manages the bridge between the SPBL and the SPBM. The semantic of the Si4 security protocol is conveyed by using Si3 and Si2. The LBA is in charge to get and forward the Si4 data between the SPBL and the SPBM. For tests considerations, the LBA is transparent between S...
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12.6.6.3 Test Descriptions
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12.6.6.3.1 Si4 - SPBL service
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12.6.6.3.1.1 SI4_66311 - Normal flow
Test ID SI4_66311 Test objectives To verify that no errors occur if the LBA (tester) stimulates the SPBL (SUT) with PDUs, and these PDUs are conveyed in Si4 semantic. Configuration reference CSI4_6611 Initial conditions The procedure PSI4_6621 shall be successfully executed. The SI4_111_pdu is generated by using the SI...
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12.6.6.3.2 Si4 - SPB Manager service
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12.6.6.3.2.1 SI4_66321 - Normal flow
Test ID SI4_66321 Test objectives To verify that no errors occur if the LBA (tester) stimulates the SPBM (SUT) with PDUs, and these PDUs are conveyed in Si4 semantic. Configuration reference CSI4_6612 Initial conditions The procedure PSI4_6621 shall be successfully executed. The SI4_121_pdu is generated by using the SI...
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12.6.6.4 Requirements not testable, implicitly verified or verified elsewhere
The following requirements are generated from descriptive text. A verification by tests defined within the present document is not possible: RQ1202_005, RQ1202_029, RQ1202_031, RQ1202_032, RQ1202_034, RQ1202_035, RQ1202_036, RQ1202_037. ETSI ETSI TS 103 999-2 V15.0.0 (2021-12) 159 Release 15 Annex A (informative): Core...
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1 Scope
The present document specifies the Near-RT RIC layer signalling protocol for the E2 interface. The E2 interface provides means for interconnecting a Near-RT RIC and an E2 Node. The E2 Application Protocol (E2AP) supports the functions of E2 interface by signalling procedures defined in the present document. E2AP is dev...
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2 References
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2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which a...
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2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE 1: While any hyperlinks...
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3 Definition of terms, symbols and abbreviations
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3.1 Terms
For the purposes of the present document, the terms given in ETSI TR 121 905 [i.1], ETSI TS 103 982 [27] and the following apply. NOTE: A term defined in the present document takes precedence over the definition of the same term, if any, in ETSI TR 121 905 [i.1] and ETSI TS 103 982 [27]. E2 Node Component ID: local ide...
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3.2 Symbols
Void. ETSI ETSI TS 104 039 V4.0.0 (2024-10) 11
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3.3 Abbreviations
For the purposes of the present document, the abbreviations given in ETSI TR 121 905 [i.1], ETSI TS 103 982 [27] and the following apply. NOTE: An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in ETSI TR 121 905 [i.1] and ETSI TS 103 982 [27]. EP Ele...
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4 General
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4.1 Procedure Specification Principles
The principle for specifying the procedure logic is to specify the functional behaviour of the terminating node exactly and completely. Any rule that specifies the behaviour of the originating node shall be possible to be verified with information that is visible within the system. The following specification principle...
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4.2 Forwards and Backwards Compatibility
The forwards and backwards compatibility of the protocol is assured by mechanism where all current and future messages, and IEs or groups of related IEs, include ID and criticality fields that are coded in a standard format that will not be changed in the future. These parts can always be decoded regardless of the stan...
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4.3 Specification Notations
For the purposes of the present document, the following notations apply: Procedure When referring to an Elementary Procedure (EP) in the present document the Procedure Name is written with the first letters in each word in upper case characters followed by the word "procedure", e.g. Handover Preparation procedure. Mess...
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5 E2AP Services
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5.1 E2AP procedure modules
The E2 interface E2AP procedures are divided into two modules as follows: 1. RIC Functional Procedures; 2. Global Procedures. The RIC functional procedures module contains procedures used to pass application specific messages between Near-RT RIC applications and a target RAN Function in an E2 node [2]. The Global Proce...
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5.2 Parallel transactions
Parallel transactions, that is, multiple ongoing E2AP procedures related to the same Application and E2 node, are supported.
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6 Services expected from Signalling Transport
The signalling connection shall provide in sequence delivery of E2AP messages. E2AP shall be notified if the signalling connection breaks.
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7 Functions of E2AP
The functions of E2AP are described in ETSI TS 104 038 [2].
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8 E2AP Procedures
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8.1 Elementary Procedures
In Tables 8.1-1 and 8.1-2, all EPs are divided into Class 1 and Class 2 EPs. ETSI ETSI TS 104 039 V4.0.0 (2024-10) 13 Table 8.1-1: Class 1 Elementary Procedures Initiated by Elementary Procedure Initiating Message Successful Outcome Unsuccessful Outcome Response message Response message Near-RT RIC RIC Subscription RIC...
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8.2 RIC Functional Procedures
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8.2.1 RIC Subscription procedure
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8.2.1.1 General
This procedure is used to establish RIC Subscriptions on E2 Node consisting of an event trigger and a sequence of RIC Service Actions. This procedure shall be initiated by the Near-RT RIC. This procedure uses RIC Service signalling. ETSI ETSI TS 104 039 V4.0.0 (2024-10) 14
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8.2.1.2 Successful Operation
Figure 8.2.1.2-1: RIC Subscription procedure, successful operation The Near-RT RIC initiates the procedure by sending a RIC SUBSCRIPTION REQUEST message, which shall contain a unique RIC Request ID IE, assigned by the Near-RT RIC, to the E2 Node. When the Near-RT RIC sends the RIC SUBSCRIPTION REQUEST message, it shall...
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8.2.1.3 Unsuccessful Operation
Figure 8.2.1.3-1: RIC Subscription procedure, unsuccessful operation If a failure occurs during the RIC Subscription procedure the E2 Node shall send the RIC SUBSCRIPTION FAILURE message to the Near-RT RIC containing an appropriate cause value. If the E2 Node admits none of the requested RIC Service Actions, or detects...
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8.2.1.4 Abnormal Conditions
If the E2 Node receives a RIC SUBSCRIPTION REQUEST message containing RIC Subscription Details IE that does not align with the E2 Service Model [3], the E2 Node shall send the RIC SUBSCRIPTION FAILURE message to the Near-RT RIC containing an appropriate cause value. If the E2 Node receives a RIC SUBSCRIPTION REQUEST me...
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8.2.2 RIC Subscription Delete procedure
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8.2.2.1 General
This procedure is used to delete RIC Subscriptions on E2 Node. This procedure shall be initiated by the Near-RT RIC. This procedure uses RIC Service signalling.
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8.2.2.2 Successful Operation
Figure 8.2.2.2-1: RIC Subscription Delete procedure, successful operation The Near-RT RIC initiates the procedure by sending a RIC SUBSCRIPTION DELETE REQUEST message, containing RIC Request ID IE that was previously assigned by the Near-RT RIC during a successful RIC Subscription procedure, to the E2 Node. When the Ne...
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8.2.2.3 Unsuccessful Operation
Figure 8.2.2.3-1: RIC Subscription Delete procedure, unsuccessful operation If a failure occurs during the RIC Subscription Delete procedure, the E2 Node shall send the RIC SUBSCRIPTION DELETE FAILURE message to the Near-RT RIC containing an appropriate cause value. ETSI ETSI TS 104 039 V4.0.0 (2024-10) 17 If the RIC R...
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8.2.2.4 Abnormal Conditions
If the E2 Node receives a RIC SUBSCRIPTION DELETE REQUEST message contains an unknown RAN Function ID IE, the E2 Node shall send the RIC SUBSCRIPTION DELETE FAILURE message to the Near-RT RIC containing an appropriate cause value.
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8.2.2A RIC Subscription Delete Required procedure