6.2.1 Inter-RAT PLMN selection

38.523-13GPP5GSPart 1: ProtocolRelease 17TSUser Equipment (UE) conformance specification

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

6.2.1.1 Inter-RAT PLMN Selection / Selection of correct RAT for OPLMN / Automatic mode

6.2.1.1.1 Test Purpose (TP)

(1)

with { UE pre-set in Automatic network selection mode }

ensure that {

when { UE is switched on and there are suitable NR and E-UTRAN cells some on the OPLMN list and some not on the OPLMN list, none of them being part of the RPLMN }

then { UE selects the highest priority OPLMN and RAT combination, attaches on the selected cell.}

}

(2)

with { UE in Automatic network selection mode }

ensure that {

when { UE returns to coverage and there are suitable NR and E-UTRAN cells some on the OPLMN list and some not on the OPLMN list , none of them being part of the RPLMN }

then { UE selects the highest priority OPLMN and RAT combination, attaches on the selected cell. }

}

6.2.1.1.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 23.122 clauses 4.4.3.1 and 4.4.3.1.1. Unless otherwise stated these are Rel-15 requirements.

[TS 23.122, clause 4.4.3.1]

If successful registration is achieved, the MS indicates the selected PLMN.

…

NOTE 3: If successful registration is achieved, then the current serving PLMN becomes the registered PLMN and the MS does not store the previous registered PLMN for later use.

[TS 23.122, clause 4.4.3.1.1]

The MS selects and attempts registration on other PLMN/access technology combinations, if available and allowable, in the following order:

i) either the HPLMN (if the EHPLMN list is not present or is empty) or the highest priority EHPLMN that is available (if the EHPLMN list is present) ;

ii) each PLMN/access technology combination in the "User Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iii) each PLMN/access technology combination in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iv) other PLMN/access technology combinations with received high quality signal in random order;

v) other PLMN/access technology combinations in order of decreasing signal quality.

6.2.1.1.3 Test description

6.2.1.1.3.1 Pre-test conditions

System Simulator

– 3 NR cells as specified in TS 38.508-1 [4] table 4.4.2-3. System information combination NR-1 as defined in Ts 38.508-1 [4] sub-clause 4.4.3.1.2 is applied to all the NR cells.

– 1 cell belongs to E-UTRA. System information combination 1 as defined in TS 36.508 [7] clause 4.4.3.1 is used.

– PLMN settings are defined in TS 36.523-1 [13] table 6.0.1-1.

Table 6.2.1.1.3.1-1: Cell PLMN identities

Cell	PLMN name
NR Cell 1	PLMN2
NR Cell 12	PLMN13
NR Cell 13	PLMN14
E-UTRA Cell 1	PLMN13

– The UE is in Automatic PLMN selection mode.

– The HPLMN is PLMN1.

– USIM configuration 12 as specified in tables 6.4.1-12 in TS 38.508-1 [4] will be used.

Preamble

– The UE is in state Switched OFF (state 0-A) according to TS 38.508-1 [4].

6.2.1.1.3.2 Test procedure sequence

Table 6.2.1.1.3.2-1 and table 6.2.1.1.3.2-2 illustrate the downlink power levels to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T1" is to be applied subsequently in the Main behaviour. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.1.1.3.2-1: Cell configuration changes over time for conducted test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	NR Cell 13	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-88	"Off"	-88		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T0	RS EPRE	dBm/15kHz				-85
T1	SS/PBCH SSS EPRE	dBm/SCS	"Off"	-88	-88		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz				-85

Table 6.2.1.1.3.2-2: Cell configuration changes over time for OTA test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	NR Cell 13	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-82	"Off"	-82		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T0	RS EPRE	dBm/15kHz	–	–	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	–	-91+ Delta(NRf3)	–
T1	SS/PBCH SSS EPRE	dBm/SCS	"Off"	-82	-82		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz	–	–	–	-85
	Qrxlevmin	dBm	–	-91+ Delta(NRf2)	-91+ Delta(NRf1)	–

Table 6.2.1.1.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The UE is switched on.	–	–	–	–
2	Check: Does the UE send RRCSetupRequest on NR Cell 1?	–>	NR RRC: RRCSetupRequest	1	P
3-20a1	Steps 3-20a1 of the registration procedure described in TS 38.508-1 [4] table 4.5.2.2-2 are performed on NR Cell 1.	–	–	–	–
21	The SS adjusts cell levels according to row T1 of table 6.2.1.1.3.2-1.	–	–	–	–
22-28a1	Check: Does the test result of generic test procedure in TS 38.508-1 [4] table 4.9.7.2.2-1 is performed and the UE is camped on E-UTRAN Cell 1?	–	–	2	P

6.2.1.1.3.3 Specific message contents

None.

6.2.1.2 Inter-RAT PLMN Selection / Selection of correct RAT for UPLMN / Automatic mode

6.2.1.2.1 Test Purpose (TP)

(1)

with { UE in Automatic network selection mode and UPLMN and OPLMN cells available on NR and E-UTRAN}

ensure that {

when { UE is switched on}

then { UE selects the highest priority UPLMN and RAT combination and UE attempts to register on the selected cell }

}

(2)

with { UE in Automatic network selection mode and UPLMN and OPLMN cells available on NR and E-UTRAN}

ensure that {

when { UE returns to coverage}

then { UE selects the highest priority VPLMN and RAT combination and UE attempts to attach on the selected cell }

}

6.2.1.2.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 23.122 clauses 4.4.3.1 and 4.4.3.1.1. Unless otherwise stated these are Rel-15 requirements.

[TS 23.122, clause 4.4.3.1]

If successful registration is achieved, the MS indicates the selected PLMN.

…

NOTE 3: If successful registration is achieved, then the current serving PLMN becomes the registered PLMN and the MS does not store the previous registered PLMN for later use.

[TS 23.122, clause 4.4.3.1.1]

The MS selects and attempts registration on other PLMN/access technology combinations, if available and allowable, in the following order:

i) either the HPLMN (if the EHPLMN list is not present or is empty) or the highest priority EHPLMN that is available (if the EHPLMN list is present) ;

ii) each PLMN/access technology combination in the "User Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iii) each PLMN/access technology combination in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iv) other PLMN/access technology combinations with received high quality signal in random order;

v) other PLMN/access technology combinations in order of decreasing signal quality.

6.2.1.2.3 Test description

6.2.1.2.3.1 Pre-test conditions

System Simulator

– NR Cell 1 and NR Cell 12 as specified in TS 38.508-1 [4] table 4.4.2-3 are configured as shown in Table 6.2.1.2.3.2-1. System information combination NR-1 as defined in Ts 38.508-1 [4] sub-clause 4.4.3.1.2 is applied to all the NR cells.

– E-UTRA Cell 1 belongs to E-UTRA (defined in TS 36.508 [7]). System information combination 1 as defined in TS 36.508 [7] clause 4.4.3.1 is used.

– PLMN settings are defined in TS 36.523-1 [13] table 6.0.1-1.

Table 6.2.1.2.3.1-1: Cell PLMN identities

Cell	PLMN name
NR Cell 1	PLMN2
NR Cell 12	PLMN13
E-UTRA Cell 1	PLMN13

– The UE is in Automatic PLMN selection mode.

– The HPLMN is PLMN1.

– USIM configuration 7 as specified in tables 6.4.1-7 in TS 38.508-1 [4] will be used.

Preamble

– The UE is in state Switched OFF (state 0-A) according to TS 38.508-1 [4].

6.2.1.2.3.2 Test procedure sequence

Table 6.2.1.2.3.2-1 and table 6.2.1.2.3.2-2 illustrate the downlink power levels to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T1" is to be applied subsequently in the Main behaviour. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.1.2.3.2-1: Cell configuration changes over time for conducted test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-88	-88	–
T0	RS EPRE	dBm/15kHz			-85
T1	SS/PBCH SSS EPRE	dBm/SCS	-88	"Off"	–	Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz			-85

Table 6.2.1.2.3.2-2: Cell configuration changes over time for OTA test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-82	-82	–
T0	RS EPRE	dBm/15kHz	–	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	-91+ Delta(NRf2)	–
T1	SS/PBCH SSS EPRE	dBm/SCS	-82	"Off"	–	Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz	–	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	–	–

Table 6.2.1.2.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The UE is switched on.	–	–	–	–
2	Check: Does the UE send RRCSetupRequest on NR Cell 12?	–>	RRCSetupRequest	1	P
3-20a1	Steps 3-20a1 of the registration procedure described in TS 38.508-1 [4] table 4.5.2.2-2 are performed on NR Cell 12.	–	–	–	–
21	The SS adjusts cell levels according to row T1 of table 6.2.1.2.3.2-1/2.	–	–	–	–
22	Check: Does the test result of generic test procedure in TS 38.508-1 [4] table 4.9.7.2.2-1 is performed and the UE is camped on E-UTRAN Cell 1 with condition ‘connected without release‘?	–	–	2	P
23	At the end of this test procedure sequence, the UE is in end state E-UTRA connected (E2_T3440) according to TS 36.508 [7].	–	–	–	–

6.2.1.2.3.3 Specific message contents

None.

6.2.1.3 Inter-RAT PLMN Selection / Selection of correct PLMN and RAT in shared network environment / Automatic mode

6.2.1.3.1 Test Purpose (TP)

(1)

with { UE in Automatic network selection mode and shared OPLMN cells available on NR and E-UTRAN }

ensure that {

when { UE is switched on }

then { UE selects the highest priority OPLMN and RAT combination and UE attempts to register on the selected cell and PLMN }

}

(2)

with { UE in Automatic network selection mode and shared OPLMN cells available on NR and E-UTRAN }

ensure that {

when { UE returns to coverage }

then { UE selects the highest priority OPLMN and RAT combination and UE attempts to attach on the selected cell and PLMN }

}

6.2.1.3.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 23.122 clauses 4.4.3, 4.4.3.1 and 4.4.3.1.1. Unless otherwise stated these are Rel-15 requirements.

[TS 23.122, clause 4.4.3]

When the MS reselects to a cell in a shared network, and the cell is a suitable cell for multiple PLMN identities received on the BCCH or on the EC-BCCH the AS indicates these multiple PLMN identities to the NAS according to 3GPP TS 44.018 [34], 3GPP TS 44.060 [39], 3GPP TS 25.304 [32] and 3GPP TS 36.304 [43]. The MS shall choose one of these PLMNs. If the registered PLMN is available among these PLMNs, the MS shall not choose a different PLMN.

[TS 23.122, clause 4.4.3.1]

If successful registration is achieved, the MS indicates the selected PLMN.

…

NOTE 3: If successful registration is achieved, then the current serving PLMN becomes the registered PLMN and the MS does not store the previous registered PLMN for later use.

[TS 23.122, clause 4.4.3.1.1]

The MS selects and attempts registration on other PLMN/access technology combinations, if available and allowable, in the following order:

i) either the HPLMN (if the EHPLMN list is not present or is empty) or the highest priority EHPLMN that is available (if the EHPLMN list is present) ;

ii) each PLMN/access technology combination in the "User Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iii) each PLMN/access technology combination in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iv) other PLMN/access technology combinations with received high quality signal in random order;

v) other PLMN/access technology combinations in order of decreasing signal quality.

6.2.1.3.3 Test description

6.2.1.3.3.1 Pre-test conditions

System Simulator

– 2 NR cells as specified in TS 38.508-1 [4] table 4.4.2-3 are configured as shown in Table 6.2.1.3.3.2-1. System information combination NR-1 as defined in Ts 38.508-1 [4] sub-clause 4.4.3.1.2 is applied to all the NR cells.

– 1 cell belongs to E-UTRA. System information combination 1 as defined in TS 36.508 [7] clause 4.4.3.1 is used.

– PLMN settings are defined in TS 36.523-1 [13] table 6.0.1-1.

Table 6.2.1.3.3.1-1: Cell PLMN identities

Cell	PLMN name
NR Cell 1	PLMN16
NR Cell 1	PLMN15
NR Cell 12	PLMN16
NR Cell 12	PLMN17
E-UTRA Cell 1	PLMN17
E-UTRA Cell 1	PLMN16

– The UE is in Automatic PLMN selection mode.

– The HPLMN is PLMN1.

– USIM configuration 8 as specified in tables 6.4.1-8 in TS 38.508-1 [4] will be used.

Preamble

– The UE is in state Switched OFF (state 0-A) according to TS 38.508-1 [4].

6.2.1.3.3.2 Test procedure sequence

Table 6.2.1.3.3.2-1 and table 6.2.1.3.3.2-2 illustrate the downlink power levels to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T1" is to be applied subsequently in the Main behaviour. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.1.3.3.2-1: Cell configuration changes over time for conducted test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-88	-88
T0	RS EPRE	dBm/15kHz			-85
T1	SS/PBCH SSS EPRE	dBm/SCS	"Off"	-88		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz			-85

Table 6.2.1.3.3.2-2: Cell configuration changes over time for OTA test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	-82	-82
T0	RS EPRE	dBm/15kHz	–	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	-91+ Delta(NRf2)	–
T1	SS/PBCH SSS EPRE	dBm/SCS	"Off"	-82	–	Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T1	RS EPRE	dBm/15kHz	–	–	-85
	Qrxlevmin	dBm	–	-91+ Delta(NRf2)	–

Table 6.2.1.3.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The UE is switched on.	–	–	–	–
2	Check: Does the UE send RRCSetupRequest on NR Cell 1?	–>	NR RRC: RRCSetupRequest	1	P
3-20a1	Steps 3-20a1 of the registration procedure described in TS 38.508-1 [4] Table 4.5.2.2-2 are performed on NR Cell 1.	–	–	–	–
21	The SS adjusts cell levels according to row T1 of table 6.2.1.3.3.2-1/2.	–	–	–	–
22	Check: Does the test result of generic test procedure in TS 38.508-1 [4] table 4.9.7.2.2-1 is performed and the UE is camped on E-UTRAN Cell 1 with condition ‘connected without release‘?	–	–	2	P
23	At the end of this test procedure sequence, the UE is in end state E-UTRA connected (E2_T3440) according to TS 36.508 [7].	–	–	–	–

6.2.1.3.3.3 Specific message contents

Table 6.2.1.3.3.3-1: SIB1 for NR Cell 1 (all steps, Table 6.2.1.3.3.2-3)

Derivation path: 38.508-1 [4] Table 4.6.1-28
Information Element	Value/Remark	Comment	Condition
SIB1 ::= SEQUENCE {
CellAccessRelatedInfo SEQUENCE {
PLMN-IdentityInfoList SEQUENCE (SIZE (1..maxPLMN)) OF PLMN-IdentityInfo {	1 entry
PLMN-IdentityInfo[1] SEQUENCE {		entry 1
plmn-IdentityList SEQUENCE (SIZE (1..maxPLMN)) OF PLMN-Identity {	2 entries
PLMN-Identity[1] SEQUENCE {		entry 1
mcc	PLMN16 MCC
mnc	PLMN16 MNC
}
PLMN-Identity[2] SEQUENCE {		entry 2
mcc	PLMN15 MCC
mnc	PLMN15 MNC
}
}
}
}
}
}
}

Table 6.2.1.3.3.3-2: SIB1 for NR Cell 12 (all steps, Table 6.2.1.3.3.2-)

Derivation path: 38.508-1 [4] Table 4.6.1-28
Information Element	Value/Remark	Comment	Condition
SIB1 ::= SEQUENCE {
CellAccessRelatedInfo SEQUENCE {
PLMN-IdentityInfoList SEQUENCE (SIZE (1..maxPLMN)) OF PLMN-IdentityInfo {	1 entry
PLMN-IdentityInfo[1] SEQUENCE {		entry 1
plmn-IdentityList SEQUENCE (SIZE (1..maxPLMN)) OF PLMN-Identity {	2 entries
PLMN-Identity[1] SEQUENCE {		entry 1
mcc	PLMN16 MCC
mnc	PLMN16 MNC
}
PLMN-Identity[2] SEQUENCE {		entry 2
mcc	PLMN17 MCC
mnc	PLMN17 MNC
}
}
}
}
}
}
}

Table 6.2.1.3.3.3-3: SystemInformationBlockType1 for E-UTRAN Cell 1 (all steps, Table 6.2.1.3.3.2-3)

Derivation path: 36.508[7] Table 4.4.3.2-3
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
plmn-IdentityList SEQUENCE (SIZE (1..6)) OF PLMN-IdentityInfo {	2 entries
PLMN-IdentityInfo[1] SEQUENCE {		entry 1
plmn-Identity	PLMN17
}
PLMN-IdentityInfo[2] SEQUENCE {		entry 2
plmn-Identity	PLMN16
}
}
}
}

Table 6.2.1.3.3.3-4: RRCSetupComplete (Step 6, Table 6.2.1.3.3.2-3)

Derivation Path: 38.508-1 [4] Table 4.6.1-22
Information Element	Value/remark	Comment	Condition
RRCSetupComplete::= SEQUENCE {
criticalExtensions CHOICE {
rrcSetupComplete SEQUENCE {
selectedPLMN-Identity	2	PLMN15
}
}
}

Table 6.2.1.3.3.3-5: RRCConnectionSetupComplete (Step 22, Table 6.2.1.3.3.2-3)

Derivation Path: 36.331 [11] clause 6.2.2
Information Element	Value/remark	Comment	Condition
RRCConnectionSetupComplete ::= SEQUENCE {
criticalExtensions CHOICE {
c1 CHOICE {
rrcConnectionSetupComplete-r8 SEQUENCE {
selectedPLMN-Identity	1	PLMN17
}
}
}
}

6.2.1.4 Inter-RAT PLMN Selection / Selection of correct RAT from the OPLMN list / Manual mode

6.2.1.4.1 Test Purpose (TP)

(1)

with { UE in Manual network selection mode and OPLMN cells available on NR and E-UTRA}

ensure that {

when { the USER selects an OPLMN}

then { UE selects the highest priority RAT for the OPLMN and UE attempts to attach on the selected cell and when successfully registered indicates the PLMN to the user }

}

(2)

with { UE in Manual network selection mode and OPLMN cells available on NR and E-UTRA}

ensure that {

when { the USER selects an OPLMN and RAT combination}

then {UE attempts to attach on the selected OPLMN and RAT combination and when successfully registered indicates the PLMN to the user }

}

6.2.1.4.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 23.122 clauses 4.4.3.1.2. Unless otherwise stated these are Rel-15 requirements.

[TS 23.122, clause 4.4.3.1.2]

The MS indicates whether there are any PLMNs, which are available using all supported access technologies. This includes PLMNs in the "forbidden PLMNs" list, "forbidden PLMNs for GPRS service" list and PLMNs which only offer services not supported by the MS. An MS which supports GSM COMPACT shall also indicate GSM COMPACT PLMNs (which use PBCCH).

If displayed, PLMNs meeting the criteria above are presented in the following order:

i)- either the HPLMN (if the EHPLMN list is not present or is empty) or, if one or more of the EHPLMNs are available then based on an optional data field on the SIM either only the highest priority available EHPLMN is to be presented to the user or all available EHPLMNs are presented to the user in priority order. If the data field is not present on the SIM, then only the highest priority available EHPLMN is presented;

ii)- PLMN/access technology combinations contained in the " User Controlled PLMN Selector with Access Technology " data file in the SIM (in priority order);

iii)- PLMN/access technology combinations contained in the "Operator Controlled PLMN Selector with Access Technology" data file in the SIM (in priority order);

iv)- other PLMN/access technology combinations with received high quality signal in random order;

v)- other PLMN/access technology combinations in order of decreasing signal quality.

…

The user may select his desired PLMN and the MS then initiates registration on this PLMN using the access technology chosen by the user for that PLMN or using the highest priority available access technology for that PLMN, if the associated access technologies have a priority order. (This may take place at any time during the presentation of PLMNs). For such a registration, the MS shall ignore the contents of the "forbidden location areas for roaming", "forbidden tracking areas for roaming", "5GS forbidden tracking areas for roaming", "forbidden location areas for regional provision of service", "forbidden tracking areas for regional provision of service", "5GS forbidden tracking areas for regional provision of service", "forbidden PLMNs for GPRS service" and "forbidden PLMNs" lists.

NOTE 1: It is an MS implementation option whether to indicate access technologies to the user. If the MS does display access technologies, then the access technology selected by the user is only used for initial registration on the selected PLMN. If the MS does not display access technologies, then the access technology chosen for a particular PLMN should be the highest priority available access technology for that PLMN, if the associated access technologies have a priority order, and is only used for initial registration.

6.2.1.4.3 Test description

6.2.1.4.3.1 Pre-test conditions

System Simulator

– 3 cells are used:

– E-UTRA Cell 1 belongs to E-UTRA (defined in TS 36.508 [7]). System information combination 1 as defined in TS 36.508 [7] clause 4.4.3.1 is used.

– PLMN settings are defined in TS 36.523-1 [13] table 6.0.1-1.

Table 6.2.1.4.3.1-1: Cell PLMN identities

Cell	PLMN name
NR Cell 1	PLMN2
NR Cell 12	PLMN13
E-UTRA Cell 1	PLMN2

– The HPLMN is PLMN1.

– USIM configuration 13 as specified in table 6.4.1-13 in TS 38.508-1 [4] will be used.

Preamble

– The UE is attached to PLMN1 and the UE is set to Manual PLMN selection mode before it is in state Switched OFF (state 0N-B) according to TS 38.508-1 [4].

6.2.1.4.3.2 Test procedure sequence

Table 6.2.1.4.3.2-1 and table 6.2.1.4.3.2-2 illustrate the downlink power levels to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble.Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.2.1.4.3.2-3.

Table 6.2.1.4.3.2-1: Cell configuration changes over time for conducted test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1
T0	SS/PBCH SSS EPRE	dBm/SCS	-88	-88
T0	RS EPRE	dBm/15kHz			-85
T1	SS/PBCH SSS EPRE	dBm/SCS	OFF	OFF
	RS EPRE	dBm/15kHz			-85
T2	SS/PBCH SSS EPRE	dBm/SCS	-88	OFF
	RS EPRE	dBm/15kHz			OFF

Table 6.2.1.4.3.2-2: Cell configuration changes over time for OTA test environment

	Parameter	Unit	NR Cell 1	NR Cell 12	E-UTRA Cell 1
T0	SS/PBCH SSS EPRE	dBm/SCS	-82	-82	–
T0	RS EPRE	dBm/15kHz	–	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	-91+ Delta(NRf2)	–
T1	SS/PBCH SSS EPRE	dBm/SCS	OFF	OFF
	RS EPRE	dBm/15kHz			-85
T2	SS/PBCH SSS EPRE	dBm/SCS	-82	OFF
	RS EPRE	dBm/15kHz			OFF

Table 6.2.1.4.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The UE is switched on.	–	–	–	–
2	Make the UE display the list of available PLMNs.	–	–	–	–
–	EXCEPTION: Steps 2a1 to 2b5 describe behaviour that depends on UE capabilities; the "lower case letter" identifies a step sequence that takes place if the condition is met.	–	–	–	–
2a1	IF pc_Available_PLMNs_AcT_Ind[29] (Support of Access Technology Indication in available PLMNs list) THEN PLMN2 (E-UTRAN) is selected	–	–	–	–
2a2	Check: Does the test result of generic test procedure in TS 38.508-1 [4] table 4.5.2.2-5 is performed and the UE is camped on E-UTRA Cell 1?	–	–	2
2a3	Check: Is PLMN2 indicated as registered PLMN by the UE?	–	–	2	P
2a4	The SS adjusts the NR Cell power levels according to row "T1" in table 6.2.1.4.3.2-1/2.
2a5	Set the UE in Automatic PLMN selection mode.
2b1	ELSE (No Access Technology shown to the User) PLMN2 is selected
2b2	Check: Does the test result of generic test procedure in TS 38.508-1 [4] table 4.5.2.2-2 is performed and the UE is camped on NR Cell 1?	–		1
2b3	Check: Is PLMN2 indicated as registered PLMN by the UE?	–	–	1	P
2b4	The SS adjusts the E-UTRA and NR Cell power levels according to row "T2" in table 6.2.1.4.3.2-1/2.
2b5	Set the UE in Automatic PLMN selection mode.
3	Wait for 300s to allow the UE to switch to automatic PLMN selection mode.	–	–	–	–

6.2.1.4.3.3 Specific message contents

None.

6.2.1.5 Inter-RAT Background HPLMN Search / Search for correct RAT for HPLMN / Automatic Mode

6.2.1.5.1 Test Purpose (TP)

with { UE in Automatic network selection mode is camped on a E-UTRAN VPLMN cell and HPLMN cell available on NR}

ensure that {

when { higher priority PLMN search timer T expires }

then { UE detects NR cell and camps on the NR cell }

}

6.2.1.5.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 23.122 clauses 4.4.3.3.1. Unless otherwise stated these are Rel-15 requirements.

[TS 23.122, clause 4.4.3.3.1]

If the MS is in a VPLMN, the MS shall periodically attempt to obtain service on its HPLMN (if the EHPLMN list is not present or is empty) or one of its EHPLMNs (if the EHPLMN list is present) or a higher priority PLMN/access technology combinations listed in "user controlled PLMN selector" or "operator controlled PLMN selector" by scanning in accordance with the requirements that are applicable to i), ii) and iii) as defined in the Automatic Network Selection Mode in subclause 4.4.3.1.1. In the case that the mobile has a stored "Equivalent PLMNs" list the mobile shall only select a PLMN if it is of a higher priority than those of the same country as the current serving PLMN which are stored in the "Equivalent PLMNs" list. For this purpose, a value of timer T may be stored in the SIM. The interpretation of the stored value depends on the radio capabilities supported by the MS:

– For an MS that does not support any of the following: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]), T is either in the range 6 minutes to 8 hours in 6 minute steps or it indicates that no periodic attempts shall be made. If no value for T is stored in the SIM, a default value of 60 minutes is used for T.

– For an MS that only supports any of the following or a combination of: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]), T is either in the range 2 hours to 240 hours, using 2 hour steps from 2 hours to 80 hours and 4 hour steps from 84 hours to 240 hours, or it indicates that no periodic attempts shall be made. If no value for T is stored in the SIM, a default value of 72 hours is used.

– For an MS that supports both:

a) any of the following or a combination of: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]); and

b) any access technology other than the following: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]),

then T is interpreted depending on the access technology in use as specified below:

1) if the MS is using any of the following at the time of starting timer T: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]), T is either in the range 2 hours to 240 hours, using 2 hour steps from 2 hours to 80 hours and 4 hour steps from 84 hours to 240 hours, or it indicates that no periodic attempts shall be made. If no value for T is stored in the SIM, a default value of 72 hours is used; and

2) if the MS is not using any of the following at the time of starting timer T: EC-GSM-IoT, Category M1 or Category NB1 (as defined in 3GPP TS 36.306 [54]), T is either in the range 6 minutes to 8 hours in 6 minute steps or it indicates that no periodic attempts shall be made. If no value for T is stored in the SIM, a default value of 60 minutes is used for T.

If the MS is configured with the MinimumPeriodicSearchTimer as specified in 3GPP TS 24.368 [50] or 3GPP TS 31.102 [40], the MS shall not use a value for T that is less than the MinimumPeriodicSearchTimer. If the value stored in the SIM, or the default value for T (when no value is stored in the SIM), is less than the MinimumPeriodicSearchTimer, then T shall be set to the MinimumPeriodicSearchTimer.

The MS does not stop timer T, as described in 3GPP TS 24.008 [23] and 3GPP TS 24.301 [23A], when it activates power saving mode (PSM) (see 3GPP TS 23.682 [27A]).

The MS can be configured for Fast First Higher Priority PLMN search as specified in 3GPP TS 31.102 [40] or 3GPP TS 24.368 [50]. Fast First Higher Priority PLMN search is enabled if the corresponding configuration parameter is present and set to enabled. Otherwise, Fast First Higher Priority PLMN search is disabled.

The attempts to access the HPLMN or an EHPLMN or higher priority PLMN shall be as specified below:

a) The periodic attempts shall only be performed in automatic mode when the MS is roaming, and not while the MS is attached for emergency bearer services, is registered for emergency services, has a PDU session for emergency services or has a PDN connection for emergency bearer services;

b) The MS shall make the first attempt after a period of at least 2 minutes and at most T minutes:

– only after switch on if Fast First Higher Priority PLMN search is disabled; or

– after switch on or upon selecting a VPLMN if Fast First Higher Priority PLMN search is enabled.

c) The MS shall make the following attempts if the MS is on the VPLMN at time T after the last attempt;

d) Periodic attempts shall only be performed by the MS while in idle mode;

d1) periodic attempts may be postponed while the MS is in power saving mode (PSM) (see 3GPP TS 23.682 [27A]).

e) If the HPLMN (if the EHPLMN list is not present or is empty) or a EHPLMN (if the list is present) or a higher priority PLMN is not found, the MS shall remain on the VPLMN.

f) In steps i), ii) and iii) of subclause 4.4.3.1.1 the MS shall limit its attempts to access higher priority PLMN/access technology combinations to PLMN/access technology combinations of the same country as the current serving VPLMN, as defined in Annex B.

g) Only the priority levels of Equivalent PLMNs of the same country as the current serving VPLMN, as defined in Annex B, shall be taken into account to compare with the priority level of a selected PLMN.

h) If the PLMN of the highest priority PLMN/access technology combination available is the current VPLMN, or one of the PLMNs in the "Equivalent PLMNs" list, the MS shall remain on the current PLMN/access technology combination.

6.2.1.5.3 Test description

6.2.1.5.3.1 Pre-test conditions

System Simulator

– E-UTRA Cell 1 as specified in TS 36.508 [7]. System information combination 1 as defined in TS 36.508 [7] clause 4.4.3.1 is used.

– NR Cell 1 as specified in TS 38.508-1 [4] table 4.4.2-3. System information combination NR-1 as defined in TS 38.508-1 [4] sub-clause 4.4.3.1.2 is applied to the NR cell.

– PLMN settings are defined in TS 36.523-1 [13] table 6.0.1-1.

Table 6.2.1.5.3.1-1: Cell PLMN identities

Cell	PLMN name
NR Cell 1	PLMN1
E-UTRA Cell 1	PLMN15

– USIM configuration 9 as specified in table 6.4.1-9 in TS 38.508-1 [4] will be used.

Preamble

– With E-UTRA Cell 1 "Serving cell" and NR Cell 1 "Non-suitable "Off" cell" in accordance with TS 38.508-1 [4], Table 6.2.2.1-3, the UE is brought to state RRC_IDLE using generic procedure parameter Connectivity (E-UTRA/EPC) and Unrestricted nr PDN (On) in accordance with the procedure described in TS 38.508-1 [4], clause 4.5.2. 4G GUTI and eKSI are assigned and security context established.

– the UE is switched-off.

– With E-UTRA Cell 1 "Non-suitable "Off" cell" and NR Cell 1 "Serving cell" in accordance with TS 38.508-1 [4], Table 6.2.2.1-3, the UE is brought to state 0N-B, RRC_IDLE Connectivity (NR), in accordance with the procedure described in TS 38.508-1 [4], Table 4.5.5.2-1. 5G-GUTI and ngKSI are assigned and security context established.

6.2.1.5.3.2 Test procedure sequence

Table 6.2.1.3.3.2-1and table 6.2.1.3.3.2-2 illustrate the downlink power levels to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T1" is to be applied subsequently in the Main behaviour. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.1.5.3.2-1: Cell configuration changes over time for conducted test environment

	Parameter	Unit	NR Cell 1	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	"Off"		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T0	RS EPRE	dBm/15kHz		-85
T1	SS/PBCH SSS EPRE	dBm/SCS	-88
T1	RS EPRE	dBm/15kHz		-85

Table 6.2.1.5.3.2-2: Cell configuration changes over time for OTA test environment

	Parameter	Unit	NR Cell 1	E-UTRA Cell 1	Remarks
T0	SS/PBCH SSS EPRE	dBm/SCS	"Off"		Power level “Off” is defined in TS 38.508-1 [4] Table 6.2.2.1-3
T0	RS EPRE	dBm/15kHz	–	-85
	Qrxlevmin	dBm	–	–
T1	SS/PBCH SSS EPRE	dBm/SCS	-82
T1	RS EPRE	dBm/15kHz	–	-85
	Qrxlevmin	dBm	-91+ Delta(NRf1)	–

Table 6.2.1.5.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	Power on the UE.	–	–	–	–
2	Void	–	–	–	–
3-12b8	Steps 1-10b8 of the registration procedure described in TS 38.508-1 [4] table 4.5.2.2-1 take place on E-UTRAN Cell 1.	–	–	–	–
13-18	Void	–	–	–	–
18A	SS starts timer of tmin = 2 minutes and tmax =6 minutes *(1+10% tolerance) (Note 1)	–	–	–	–
19	The SS adjusts cell levels according to row T1 of table 6.2.1.5.3.2-1.	–	–	–	–
20	Check: Does the UE send an RRCSetupRequest on NR Cell 1 after tmin but before tmax expires? (Note 1)	–>	NR RRC: RRCSetupRequest	1	P
20A-20B	Steps 3-4 of Table 4.5.2.2-2 of the generic procedure in TS 38.508-1 [4] are performed. (Note 2)
–	EXCEPTION: Steps 21a1 to 21b10a1 describe behaviours which depend on procedure parameters; the "lower case letter" identifies a step sequence that take place if a procedure parameter has a particular value.	–	–	–	–
21a1-21a16a1	IF 5GS registration type is set as Initial Registration in step 20B, THEN steps 5 to 20a1 of the registration procedure described in TS 38.508-1 [4] Table 4.5.2.2-2 are performed on NR Cell 1.	–	–	–	–
21b1-21b8	ELSE IF 5GS registration type is set as Mobility Registration in step 20B, THEN steps 4 to 11 of the tracking area update procedure described in TS 38.508-1 [4] table 4.9.9.2.2-1 are performed without connection release on NR Cell 1.	–	–	–	–
21b9a1-21b10a1	Steps 19a1-20a1 of the procedure described in TS 38.508-1c [4] table 4.5.2.2-2 are performed with connection release on NR Cell 1.
22-27a1	Void	–	–	–	–
Note 1: Timers tmin and tmax in step 12b are derived from the high priority PLMN search timer T defined by EF_HPPLMN. The timer tmax shall be set to 396s (6 minutes *(1+10% tolerance)), where the high priority PLMN search timer T is defined in EF_HPPLMN. Note 2: The 5GS registration type shall be only set as Mobility Registration for R16 UEs according to TS 24.501 [22] subclause 5.2.3.2.5 specified in Release 16. The EXCEPTION description applies only to R15 UEs.

6.2.1.5.3.3 Specific message contents

Table 6.2.1.5.3.3-1: REGISTRATION ACCEPT (Step 21b7 of Table 6.2.1.5.3.2-3)

Derivation Path: TS 38.508-1 [4], Table 4.7.1-6.
Information Element	Value/remark	Comment	Condition
PDU session status	0X 00 00