6.1.2 Cell selection and reselection

36.523-13GPPEvolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Packet Core (EPC)Part 1: Protocol conformance specificationRelease 17TSUser Equipment (UE) conformance specification

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

6.1.2.1 Void

6.1.2.2 Cell selection / Qrxlevmin

6.1.2.2.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell except the cell selection criteria which are not fulfilled (S<0)}

then { the UE does not consider the cell suitable and no camping on this cell can take place }

}

(2)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell including the cell selection criteria for a cell which are also fulfilled (S>0)}

then { the UE considers the cell suitable and camps on it }

}

6.1.2.2.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 10.1.1.1 and TS 36.304, clause 4.1, 5.1.2.2, 5.2.3.1, 5.2.3.2 and 5.2.8.

[TS 36.300, clause 10.1.1.1]

Cell selection:

– The UE NAS identifies a selected PLMN and equivalent PLMNs;

– The UE searches the E-UTRA frequency bands and for each carrier frequency identifies the strongest cell. It reads cell system information broadcast to identify its PLMN(s):

– The UE may search each carrier in turn ("initial cell selection") or make use of stored information to shorten the search ("stored information cell selection").

– The UE seeks to identify a suitable cell; if it is not able to identify a suitable cell it seeks to identify an acceptable cell. When a suitable cell is found or if only an acceptable cell is found it camps on that cell and commence the cell reselection procedure:

– A suitable cell is one for which the measured cell attributes satisfy the cell selection criteria; the cell PLMN is the selected PLMN, registered or an equivalent PLMN; the cell is not barred or reserved and the cell is not part of a tracking area which is in the list of "forbidden tracking areas for roaming";

– An acceptable cell is one for which the measured cell attributes satisfy the cell selection criteria and the cell is not barred;

[TS 36.304, clause 4.1]

When a UE is switched on, a public land mobile network (PLMN) is selected by NAS. For the selected PLMN, associated RAT(s) may be set [5]. The NAS shall provide a list of equivalent PLMNs, if available, that the AS shall use for cell selection and cell reselection.

With the cell selection, the UE searches for a suitable cell of the selected PLMN and chooses that cell to provide available services, further the UE shall tune to its control channel. This choosing is known as "camping on the cell".

The UE will, if necessary, then register its presence, by means of a NAS registration procedure, in the tracking area of the chosen cell and as outcome of a successful Location Registration the selected PLMN becomes the registered PLMN [5].

[TS 36.304, clause 5.1.2.2]

The UE shall scan all RF channels in the E-UTRA bands according to its capabilities to find available PLMNs. On each carrier, the UE shall search for the strongest cell and read its system information, in order to find out which PLMN(s) the cell belongs to. If the UE can read one or several PLMN identities in the strongest cell, each found PLMN (see the PLMN reading in [3]) shall be reported to the NAS as a high quality PLMN (but without the RSRP value), provided that the following high quality criterion is fulfilled:

1. For an E-UTRAN cell, the measured RSRP value shall be greater than or equal to -110 dBm.

Found PLMNs that do not satisfy the high quality criterion, but for which the UE has been able to read the PLMN identities are reported to the NAS together with the RSRP value. The quality measure reported by the UE to NAS shall be the same for each PLMN found in one cell.

…

Once the UE has selected a PLMN, the cell selection procedure shall be performed in order to select a suitable cell of that PLMN to camp on.

[TS 36.304, clause 5.2.3.1]

The UE shall use one of the following two cell selection procedures:

a) Initial Cell Selection

This procedure requires no prior knowledge of which RF channels are E-UTRA carriers. The UE shall scan all RF channels in the E-UTRA bands according to its capabilities to find a suitable cell. On each carrier frequency, the UE need only search for the strongest cell. Once a suitable cell is found this cell shall be selected.

[TS 36.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Where:

the signalled value QrxlevminOffset is only applied when a cell is evaluated for cell selection as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]. During this periodic search for higher priority PLMN the UE may check the S criteria of a cell using parameter values stored from a different cell of this higher priority PLMN.

Srxlev	Cell Selection RX level value (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP).
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	max(P_EMAX – P_UMAX, 0) (dB)
P_EMAX	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [TS 36.101]
P_UMAX	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [TS 36.101]

[TS 36.304, clause 5.2.8]

In this state, the UE shall attempt to find an acceptable cell of any PLMN to camp on, trying all RATs that are supported by the UE and searching first for a high quality cell, as defined in subclause 5.1.2.2.

The UE, which is not camped on any cell, shall stay in this state until an acceptable cell is found.

6.1.2.2.3 Test description

6.1.2.2.3.1 Pre-test conditions

System Simulator:

– Cell 1

UE:

– None.

Preamble:

– The UE is in state Switched OFF (state 1) according to [18].

6.1.2.2.3.2 Test procedure sequence

Table 6.1.2.2.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cell at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.1.2.2.3.2-2

Table 6.1.2.2.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-95	The power level value is such to satisfy SrxlevCell 1 < 0 but the UE is able to read the PLMN identity
	Qrxlevmin	dBm	-84
	Qrxlevminoffset	dB	0
	Pcompensation	dB	0
T2	Cell-specific RS EPRE	dBm/15kHz	-75	The power level is such that SrxlevCell 1 > 0
Note: The downlink signal level uncertainty is specified in TS 36.508 section 4.3.4.1

Table 6.1.2.2.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
0A	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T1" in table 6.1.2.2.3.2-1.	–	–	–	–
0B	Wait for 1.1* modification period to allow the new system information to take effect.	–	–	–	–
1	The UE is switched on.	–	–	–	–
2	Check: Does the UE send an RRCConnectionRequest on Cell 1 within the next 60 s?	–>	RRCConnectionRequest	1	F
3	SS re-adjusts the cell-specific reference signal level of Cell 1 level according to row "T2" in table 6.1.2.2.3.2-1.	–	–	–	–
4	Check: Does the UE send an RRCConnectionRequest on Cell 1?	–>	RRCConnectionRequest	2	P
5-19	Steps 3 to 17 of the registration procedure described in TS 36.508 subclause 4.5.2.3 are performed on Cell 1. NOTE: The UE performs registration and the RRC connection is released.	–	–	–	–

6.1.2.2.3.3 Specific message contents

Table 6.1.2.2.3.3-1: SystemInformationBlockType1 for cell 1 (all steps)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-42 (-84 dBm)
}
}

6.1.2.2a Cell selection / Qqualmin

6.1.2.2a.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell except the cell selection criteria which are not fulfilled (Srxlev>0 AND Squal<0)}

then { the UE does not consider the cell suitable and no camping on this cell can take place }

}

(2)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell including the cell selection criteria for a cell which are also fulfilled (Srxlev>0 AND Squal>0)}

then { the UE considers the cell suitable and camps on it }

}

6.1.2.2a.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 10.1.1.1 and TS 36.304, clause 4.1, 5.1.2.2, 5.2.3.1, 5.2.3.2 and 5.2.8.

[TS 36.300, clause 10.1.1.1]

Cell selection:

– The UE NAS identifies a selected PLMN and equivalent PLMNs;

– The UE searches the E-UTRA frequency bands and for each carrier frequency identifies the strongest cell. It reads cell system information broadcast to identify its PLMN(s):

– The UE may search each carrier in turn (“initial cell selection”) or make use of stored information to shorten the search (“stored information cell selection”).

– An acceptable cell is one for which the measured cell attributes satisfy the cell selection criteria and the cell is not barred;

[TS 36.304, clause 4.1]

The UE shall, if necessary, then register its presence, by means of a NAS registration procedure, in the tracking area of the chosen cell and as outcome of a successful Location Registration the selected PLMN becomes the registered PLMN [5].

[TS 36.304, clause 5.1.2.2]

1. For an E-UTRAN cell, the measured RSRP value shall be greater than or equal to -110 dBm.

…

Once the UE has selected a PLMN, the cell selection procedure shall be performed in order to select a suitable cell of that PLMN to camp on.

[TS 36.304, clause 5.2.3.1]

The UE shall use one of the following two cell selection procedures:

a) Initial Cell Selection

[TS 36.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Srxlev > 0 AND Squal > 0

where:

Srxlev = Q_rxlevmeas – (Q_rxlevmin + Q_{rxlevminoffset}) – Pcompensation

Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset})

where:

Srxlev	Cell selection RX level value (dB)
Squal	Cell selection quality value (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP)
Q_qualmeas	Measured cell quality value (RSRQ)
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_qualmin	Minimum required quality level in the cell (dB)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Q_{qualminoffset}	Offset to the signalled Q_qualmin taken into account in the Squal evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	max(P_EMAX –P_PowerClass, 0) (dB)
P_EMAX	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [TS 36.101]
P_PowerClass	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [TS 36.101]

[TS 36.304, clause 5.2.8]

The UE, which is not camped on any cell, shall stay in this state until an acceptable cell is found.

6.1.2.2a.3 Test description

6.1.2.2a.3.1 Pre-test conditions

System Simulator:

– Cell 1

UE:

– None.

Preamble:

– The UE is in state Switched OFF (state 1) according to [18].

6.1.2.2a.3.2 Test procedure sequence

Table 6.1.2.2a.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cell at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.1.2.2a.3.2-2

Table 6.1.2.2a.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-95	The power level value is such to satisfy SrxlevCell 1 > 0 and SqualCell 1 < 0 but the UE is able to read the PLMN identity
	RSRQ	dB	-32
	Noc	dBm/15kHz	-75
	Qrxlevmin	dBm	-106	(default value in TS 36.508 Table 4.4.3.2-3)
	Qrxlevminoffset	dB	0
	Qqualmin	dB	-18
	Qqualminoffset	dB	0
	Pcompensation	dB	0
T2	Cell-specific RS EPRE	dBm/15kHz	-65	The power level is such that SrxlevCell 1 > 0 and SqualCell 1 > 0
	RSRQ	dB	-5
	Noc	dBm/15kHz	-75
Note: The downlink signal level uncertainty is specified in TS 36.508 section 4.3.4.1

Table 6.1.2.2a.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T1" in table 6.1.2.2a.3.2-1.	–	–	–	–
2	Wait for 1.1* modification period to allow the new system information to take effect.	–	–	–	–
3	The UE is switched on.	–	–	–	–
4	Check: Does the UE send an RRCConnectionRequest on Cell 1 within the next 60 s?	–>	RRCConnectionRequest	1	F
5	SS re-adjusts the cell-specific reference signal level of Cell 1 level according to row "T2" in table 6.1.2.2a.3.2-1.	–	–	–	–
6	Check: Does the UE send an RRCConnectionRequest on Cell 1?	–>	RRCConnectionRequest	2	P
7-21	Steps 3 to 17 of the registration procedure described in TS 36.508 subclause 4.5.2.3 are performed on Cell 1. NOTE: The UE performs registration and the RRC connection is released.	–	–	–	–

6.1.2.2a.3.3 Specific message contents

Table 6.1.2.2a.3.3-1: SystemInformationBlockType1 for Cell 1 (all steps)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
nonCriticalExtension SEQUENCE {
lateNonCriticalExtension	Not present
nonCriticalExtension SEQUENCE {
ims-EmergencySupport-r9	Not present
cellSelectionInfo-v920 SEQUENCE {
q-QualMin-r9	-18 dB
q-QualMinOffset-r9	Not present
}
}
}
}

6.1.2.2b Cell selection / UE Cat 0 not allowed

6.1.2.2b.1 Test Purpose (TP)

(1)

with { Cat 0 UE in E-UTRA RRC_IDLE state on a cell broadcasting SystemInformationBlockType1 with IE category0Allowed included }

ensure that {

when { another cell not including the IE category0Allowed in broadcasted SystemInformationBlockType1 becomes better }

then { the UE considers the other cell as barred and does not reselect the cell }

}

6.1.2.2b.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 10.1.1.1 and TS 36.304, clause 5.2.8 and TS 36.331, clause 5.2.2.7.

[TS 36.304, clause 5.2.8]

The UE, which is not camped on any cell, shall stay in this state until an acceptable cell is found.

[TS 36.331, clause 5.2.2.7]

Upon receiving the SystemInformationBlockType1 either via broadcast or via dedicated signalling, the UE shall:

1> if in RRC_IDLE or in RRC_CONNECTED while T311 is running; and

1> if the UE is a category 0 UE according to 36.306 [5]; and

1> if category0Allowed is not included in SystemInformationBlockType1:

2> consider the cell as barred in accordance with TS 36.304 [4];

6.1.2.2b.3 Test description

6.1.2.2b.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 2 have different tracking areas according to table 6.0.1-2.

UE:

None.

Preamble:

– UE is in state Registered, Idle Mode (state 2) on Cell 1(serving cell) according to [18].

6.1.2.2b.3.2 Test procedure sequence

Table 6.1.2.2b.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cell at various time instants of the test execution. The configuration marked "T1" is applied at the point indicated in the Main behaviour description in Table 6.1.2.2b.3.2-2.

Table 6.1.2.2b.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 2	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-91	-85	Srxlev_{Cell 1} > 0, Srxlev_{Cell 2} > 0 , R_{Cell 1} < R_{Cell 2}
T1	Srxlev*	dB	15	21	Cell 2 becomes stronger than Cell 1
Note: Srxlev is calculated in the UE

Table 6.1.2.2b.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The SS changes Cell 1and Cell 2 level according to the row "T1" in table 6.1.2.2b.3.2-1.	–	–	–	–
2	Check: Does the UE send an RRCConnectionRequest on Cell 2 within the next 10s?	–>	RRCConnectionRequest	1	F

6.1.2.2b.3.3 Specific message contents

Table 6.1.2.2b.3.3-1: SystemInformationBlockType1 for Cell 2 (preamble and all steps)

Derivation Path: 36.508 Table 4.4.3.2-3
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
intraFreqReselection	allowed
}
nonCriticalExtension SEQUENCE {
nonCriticalExtension SEQUENCE {
nonCriticalExtension SEQUENCE {
nonCriticalExtension SEQUENCE {
cellAccessRelatedInfo-v12xy SEQUENCE {
category0Allowed-r12	Not present
}
}
}
}
}
}

6.1.2.2c Cell selection / Qrxlevmin / Enhanced Coverage

6.1.2.2c.1 Test Purpose (TP)

(1)

with { Enhanced Coverage Capable UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell except the cell selection criteria (Srxlev > 0) for neither normal nor enhanced coverage are fulfilled }

then { the UE does not consider the cell suitable and no camping on this cell can take place }

}

(2)

with { Enhanced Coverage Capable UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell except the cell selection criteria (Srxlev > 0) for normal coverage is not fulfilled and the cell selection criteria for enhanced coverage is fulfilled }

then { the UE considers itself to be in enhanced coverage and camps on the cell }

}

6.1.2.2c.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 23.7b, and TS 36.304, clause 5.2.3.2. Unless otherwise stated these are Rel-13.

[TS 36.300, clause 23.7b]

A UE in enhanced coverage is a UE that requires the use of enhanced coverage functionality to access the cell.

A UE may access a cell using enhanced coverage functionality only if the MIB of the cell indicates that access of UEs in enhanced coverage is supported. System information procedures for UEs in enhanced coverage are identical to the system information procedures for bandwidth reduced low complexity UEs. A UE capable of enhanced coverage acquires, if needed, and uses legacy system information when in normal coverage if it is not a BL UE. A UE capable of enhanced coverage acquires, if needed, and uses system information specific for UEs in enhanced coverage. A UE in enhanced coverage is not required to detect SIB change when in RRC_CONNECTED.

A set of PRACH resources (e.g. time, frequency, preamble); each associated with a coverage enhancement level, is provided in SIB. Number of PRACH repetitions and number of maximum preamble transmission attempts per coverage enhancement level are provided in SIB. UEs in same enhanced coverage level use random access resources associated with the same enhanced coverage level. Time/frequency resources and repetition factor for random access response messages for UEs in enhanced coverage are derived from the used PRACH resources.

A UE in enhanced coverage is paged using the same mechanism for paging BL UEs. The starting subframe of a paging occasion and the repetition pattern (in both time and frequency domain for downlink common control signalling) of that paging occasion are determined irrespective of the UEs enhanced coverage level.

The paging request from the MME for a UE supporting enhanced coverage functionality may contain enhanced coverage level related information and corresponding cell ID.

A UE in RRC_IDLE does not inform the network when it changes the enhanced coverage level.

A UE in enhanced coverage camps in a suitable cell where S criterion for UEs in enhanced coverage is fulfilled. The UE shall re-select to inter-frequency cells in which it is able to operate in normal coverage over cells in which it has to be in enhanced coverage.

Connected mode mobility mechanisms such as measurement reporting, network controlled handover etc., are supported for UEs in enhanced coverage. No additional mechanisms are introduced to support the use of enhanced coverage functionality to access an E-UTRA cell during inter-RAT handovers.

[TS 36.304, clause 5.2.3.2]

For NB-IoT the cell selection criterion is defined in sub-clause 5.2.3.2.a.

The cell selection criterion S in normal coverage is fulfilled when:

Srxlev > 0 AND Squal > 0

where:

Srxlev = Q_rxlevmeas – (Q_rxlevmin + Q_{rxlevminoffset}) – Pcompensation – Qoffset_temp

Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset}) – Qoffset_temp

where:

Srxlev	Cell selection RX level value (dB)
Squal	Cell selection quality value (dB)
Qoffset_temp	Offset temporarily applied to a cell as specified in [3] (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP)
Q_qualmeas	Measured cell quality value (RSRQ)
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_qualmin	Minimum required quality level in the cell (dB)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Q_{qualminoffset}	Offset to the signalled Q_qualmin taken into account in the Squal evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	If the UE supports the additionalPmax in the NS-PmaxList, if present, in SIB1, SIB3 and SIB5: max(P_EMAX1 –P_PowerClass, 0) – (min(P_EMAX2, P_PowerClass) – min(P_EMAX1, P_PowerClass)) (dB); else: max(P_EMAX1 –P_PowerClass, 0) (dB)
P_EMAX1, P_EMAX2	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [33]. P_EMAX1 and P_EMAX2 are obtained from the p-Max and the NS-PmaxList respectively in SIB1, SIB3 and SIB5 as specified in TS 36.331 [3].
P_PowerClass	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [33]

The signalled values Q_{rxlevminoffset} and Q_{qualminoffset} are only applied when a cell is evaluated for cell selection as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]. During this periodic search for higher priority PLMN the UE may check the S criteria of a cell using parameter values stored from a different cell of this higher priority PLMN.

If cell selection criterion S in normal coverage is not fulfilled for a cell, UE shall consider itself to be in enhanced coverage if the cell selection criterion S for enhanced coverage is fulfilled, where:

Q_rxlevmin	UE applies coverage specific value Q_{rxlevmin_CE} (dBm)
Q_qualmin	UE applies coverage specific value Q_{qualmin_CE} (dB)

For the UE in enhanced coverage, coverage specific values Q_{rxlevmin_CE}and Q_{qualmin_CE}are only applied for the suitability check in enhanced coverage (i.e. not used for measurement and reselection thresholds).

6.1.2.2c.3 Test description

6.1.2.2c.3.1 Pre-test conditions

System Simulator:

– Cell 1

– System information combination 1 as defined in TS 36.508 [18] clause 4.4.3.1 is used in Cell 1

UE:

– None.

Preamble:

– The UE is in state Switched OFF (state 1) according to [18].

6.1.2.2c.3.2 Test procedure sequence

Table 6.1.2.2c.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cell at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.1.2.2c.3.2-2

Table 6.1.2.2c.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-95	The power level value is such to satisfy SrxlevCell 1 < 0 but the UE is able to read the PLMN identity
T1	Qrxlevmin_CE	dBm	-82
T2	Cell-specific RS EPRE	dBm/15kHz	-69	The power level is such that SrxlevCell 1 > 0
Note: The total test tolerance used is the sum of downlink signal level uncertainty (TS 36.508 clause 6.2.2.1) and absolute UE measurement accuracy of RSRP (TS 36.133 clause 9.1.21.1 in CEModeA).

Table 6.1.2.2c.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS adjusts the cell levels according to row T1 of table 6.1.2.2c.3.2-1.	–	–	–	–
2	Wait for 1.1* modification period to allow the new system information to take effect.	–	–	–	–
3	The UE is switched on.	–	–	–	–
4	Check: Does the UE send an RRCConnectionRequest on Cell 1 within the next 60 s?	–>	RRCConnectionRequest	1	F
5	SS re-adjusts the cell-specific reference signal level of Cell 1 level according to row "T2" in table 6.1.2.2c.3.2-1.	–	–	–	–
6	Check: Does the UE send an RRCConnectionRequest on Cell 1?	–>	RRCConnectionRequest	2	P
7-21	Steps 3 to 17 of the registration procedure described in TS 36.508 subclause 4.5.2.3 are performed on Cell 1. NOTE: The UE performs registration and the RRC connection is released.	–	–	–	–

6.1.2.2c.3.3 Specific message contents

Table 6.1.2.2c.3.3-1: CellSelectionInfoCE-r13 for SystemInformationBlockType1-BR-r13 on Cell 1 (all steps)

Derivation Path: 36.508 Table 4.6.3-1AB
Information Element	Value/Remark	Comment	Condition
CellSelectionInfoCE-r13::= SEQUENCE {
q-RxLevMinCE-r13	-41 (-82 dBm)
}

6.1.2.2d Cell selection / Qqualmin / Enhanced Coverage

6.1.2.2d.1 Test Purpose (TP)

(1)

with { Enhanced Coverage Capable UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell except the cell selection criteria (Srxlev>0 AND Squal<0) for neither normal nor enhanced coverage are fulfilled }

then { the UE does not consider the cell suitable and no camping on this cell can take place }

}

(2)

with { Enhanced Coverage Capable UE in E-UTRA RRC_IDLE state }

ensure that {

when { a cell fulfils all requirements for a suitable cell including the cell selection criteria (Srxlev>0 AND Squal>0) for enhanced coverage but not for normal coverage}

then { the UE considers the cell suitable and camps on it }

}

6.1.2.2d.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 23.7b, and TS 36.304, clause 5.2.3.2. Unless otherwise stated these are Rel-13.

[TS 36.300, clause 23.7b]

A UE in enhanced coverage is a UE that requires the use of enhanced coverage functionality to access the cell. In this release of specification two enhanced coverage modes (mode A, mode B) are supported. The support of enhanced coverage mode A is mandatory for a BL UE.

A UE may access a cell using enhanced coverage functionality only if the MIB of the cell indicates that scheduling information for SIB1 specific for BL UEs is scheduled. System information procedures for UEs in enhanced coverage are identical to the system information procedures for bandwidth reduced low complexity UEs. A UE capable of enhanced coverage acquires, if needed, and uses legacy system information when in normal coverage if it is not a BL UE. A UE capable of enhanced coverage acquires, if needed, and uses system information specific for UEs in enhanced coverage. A UE in enhanced coverage is not required to detect SIB change when in RRC_CONNECTED.

The paging request from the MME for a UE supporting enhanced coverage functionality may contain enhanced coverage level related information and corresponding cell ID.

A UE in RRC_IDLE does not inform the network when it changes the enhanced coverage level.

A UE in enhanced coverage camps on a suitable cell where S criterion for UEs in enhanced coverage is fulfilled. The UE shall re-select to inter-frequency cells in which it is able to operate in normal coverage over cells in which it has to be in enhanced coverage.

[TS 36.304, clause 5.2.3.2]

For NB-IoT the cell selection criterion is defined in sub-clause 5.2.3.2.a.

The cell selection criterion S in normal coverage is fulfilled when:

Srxlev > 0 AND Squal > 0

where:

Srxlev = Q_rxlevmeas – (Q_rxlevmin + Q_{rxlevminoffset}) – Pcompensation – Qoffset_temp

Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset}) – Qoffset_temp

where:

Srxlev	Cell selection RX level value (dB)
Squal	Cell selection quality value (dB)
Qoffset_temp	Offset temporarily applied to a cell as specified in [3] (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP)
Q_qualmeas	Measured cell quality value (RSRQ)
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_qualmin	Minimum required quality level in the cell (dB)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Q_{qualminoffset}	Offset to the signalled Q_qualmin taken into account in the Squal evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	If the UE supports the additionalPmax in the NS-PmaxList, if present, in SIB1, SIB3 and SIB5: max(P_EMAX1 –P_PowerClass, 0) – (min(P_EMAX2, P_PowerClass) – min(P_EMAX1, P_PowerClass)) (dB); else: max(P_EMAX1 –P_PowerClass, 0) (dB);
P_EMAX1, P_EMAX2	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [33]. P_EMAX1 and P_EMAX2 are obtained from the p-Max and the NS-PmaxList respectively in SIB1, SIB3 and SIB5 as specified in TS 36.331 [3].
P_PowerClass	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [33]

Q_rxlevmin	UE applies coverage specific value Q_{rxlevmin_CE} (dBm)
Q_qualmin	UE applies coverage specific value Q_{qualmin_CE} (dB)

6.1.2.2d.3 Test description

6.1.2.2d.3.1 Pre-test conditions

System Simulator:

– Cell 1

– System information combination 1 as defined in TS 36.508 [18] clause 4.4.3.1 is used in Cell 1

UE:

– None.

Preamble:

– The UE is in state Switched OFF (state 1) according to [18].

6.1.2.2d.3.2 Test procedure sequence

Table 6.1.2.2d.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cell at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.1.2.2d.3.2-2.

Table 6.1.2.2d.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-73	The power level value is such to satisfy SrxlevCell 1 > 0 and SqualCell 1 < 0 but the UE is able to read the PLMN identity
	RSRQ*	dB	-10
	Noc	dBm/15kHz	-75
T2	Cell-specific RS EPRE	dBm/15kHz	-60	The power level is such that SrxlevCell 1 > 0 and SqualCell 1 > 0 for enhanced coverage, and SrxlevCell 1 > 0 and SqualCell 1 < 0 for normal coverage
	RSRQ*	dB	-4
	Noc	dBm/15kHz	-75
Note: The downlink signal level uncertainty is specified in TS 36.508 section 4.3.4.1

Table 6.1.2.2d.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS adjusts the cell levels according to row T1 of table 6.1.2.2d.3.2-1.	–	–	–	–
2	Wait for 1.1* modification period to allow the new system information to take effect.	–	–	–	–
3	The UE is switched on.	–	–	–	–
4	Check: Does the UE send an RRCConnectionRequest on Cell 1 within the next 60 s?	–>	RRCConnectionRequest	1	F
5	SS re-adjusts the cell-specific reference signal level of Cell 1 level according to row "T2" in table 6.1.2.2d.3.2-1.	–	–	–	–
6	Check: Does the UE send an RRCConnectionRequest on Cell 1?	–>	RRCConnectionRequest	2	P
7-21	Steps 3 to 17 of the registration procedure described in TS 36.508 subclause 4.5.2.3 are performed on Cell 1. NOTE: The UE performs registration and the RRC connection is released.	–	–	–	–

6.1.2.2d.3.3 Specific message contents

Table 6.1.2.2d.3.3-1: Void

Table 6.1.2.2d.3.3-2: SystemInformationBlockType1-BR-r13 for Cell 1 (Step 1 onwards)

Derivation Path: 36.508 table 4.4.3.2-3A
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1-BR-r13 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-53 (-106 dBm)
}
nonCriticalExtension SEQUENCE {
lateNonCriticalExtension	Not present
nonCriticalExtension SEQUENCE {
ims-EmergencySupport-r9	Not present
cellSelectionInfo-v920 SEQUENCE {
q-QualMin-r9	-3 dB
q-QualMinOffset-r9	Not present
}
nonCriticalExtension SEQUENCE {
tdd-Config-v1130	Not present
cellSelectionInfo-v1130	Not present
nonCriticalExtension SEQUENCE {
cellAccessRelatedInfo-v1250 SEQUENCE {
category0Allowed-r12	Not Present
}
cellSelectionInfo-v1250	Not present
freqBandIndicatorPriority-r12	Not present
nonCriticalExtension SEQUENCE {
hyperSFN-r13	Not present
eDRX-Allowed-r13	Not present
eDRX-Allowed-r13	True
cellSelectionInfoCE-r13::= SEQUENCE {
q-RxLevMinCE-r13	-53 (-106 dBm)
q-QualMinRSRQ-CE-r13	-8 dB
}
}
}
}
}
}

6.1.2.3 Cell selection / Intra E-UTRAN / Serving cell becomes non-suitable (S<0 or barred)

6.1.2.3.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable (S<0)and there is a suitable neighbour cell (S>0) }

then { UE selects the suitable neighbour cell }

}

(2)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes barred and there is a suitable neighbour cell}

then { UE selects the suitable neighbour cell }

}

6.1.2.3.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 10.1.1.1 and TS 36.304, clause 4.1, 5.2.1, 5.2.3.2, 5.2.4.6 and 5.3.1.

[TS 36.300, clause 10.1.1.1]

Cell selection:

– The UE NAS identifies a selected PLMN and equivalent PLMNs;

– The UE searches the E-UTRA frequency bands and for each carrier frequency identifies the strongest cell. It reads cell system information broadcast to identify its PLMN(s):

– The UE may search each carrier in turn ("initial cell selection") or make use of stored information to shorten the search ("stored information cell selection").

– An acceptable cell is one for which the measured cell attributes satisfy the cell selection criteria and the cell is not barred;

[TS 36.304, clause 4.1]

If the UE finds a more suitable cell, according to the cell reselection criteria, it reselects onto that cell and camps on it. If the new cell does not belong to at least one tracking area to which the UE is registered, location registration is performed.

[TS 36.304, clause 5.2.1]

When camped on a cell, the UE shall regularly search for a better cell according to the cell reselection criteria. If a better cell is found, that cell is selected.

[TS 36.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Where:

Srxlev	Cell Selection RX level value (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP).
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	max(P_EMAX – P_UMAX, 0) (dB)
P_EMAX	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [TS 36.101]
P_UMAX	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [TS 36.101]

[TS 36.304, clause 5.2.4.6]

In all cases, the UE shall reselect the new cell, only if the following conditions are met:

– the new cell is better ranked than the serving cell during a time interval Treselection_RAT;

– more than 1 second has elapsed since the UE camped on the current serving cell.

[TS 36.304, clause 5.3.1]

Cell status and cell reservations are indicated in the SystemInformationBlockType1 [3] by means of two Information Elements:

– cellBarred (IE type: "barred" or "not barred")
In case of multiple PLMNs indicated in SIB1 sharing, this IE is common for all PLMNs

…

When cell status is indicated as "not barred" and "not reserved" for operator use,

– All UEs shall treat this cell as candidate during the cell selection and cell re-selection procedures.

…

When cell status "barred" is indicated or to be treated as if the cell status is "barred",

– The UE is not permitted to select/re-select this cell, not even for emergency calls.

– The UE shall select another cell according to the following rule:

– If the cell is a CSG cell:

– the UE may select another cell on the same frequency if the selection/reselection criteria are fulfilled.

– else

– If the IE intraFreqReselection in IE cellAccessRelatedInfo in SystemInformationBlockType1 is set to "allowed", the UE may select another cell on the same frequency if re-selection criteria are fulfilled.

– The UE shall exclude the barred cell as a candidate for cell selection/reselection for 300 seconds.

– If the IE intraFreqReselection in IE cellAccessRelatedInfo in SystemInformationBlockType1 is set to "not allowed" the UE shall not re-select a cell on the same frequency as the barred cell.

– The UE shall exclude the barred cell and the cells on the same frequency as a candidate for cell selection/reselection for 300 seconds.

6.1.2.3.3 Test description

6.1.2.3.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 11 have different tracking areas according to table 6.0.1-2.

UE:

None.

Preamble:

– UE is in state Registered, Idle Mode (state 2) on Cell 1(serving cell) according to [18].

6.1.2.3.3.2 Test procedure sequence

Table 6.1.2.3.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" and "T2" are applied at the points indicated in the Main behaviour description in Table 6.1.2.3.3.2-2.

Table 6.1.2.3.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 11	Remark
T1	Cell-specific RS EPRE (FDD/TDD)	dBm/15kHz	"Off"	-85	Srxlev_{Cell 1} < 0 (NOTE 1)
T1	Srxlev*	dB	–	25	Cell 11 becomes the strongest cell
T2	Cell-specific RS EPRE (FDD)	dBm/15kHz	-91	-85	Srxlev_{Cell 11} > 0, Srxlev_{Cell 1} > 0 , R_{Cell 1} < R_{Cell 11}
	Srxlev* (FDD)	dB	19	25
	Cell-specific RS EPRE (TDD)	dBm/15kHz	-89	-85
	Srxlev* (TDD)	dB	21	25	Cell 1 becomes suitable
	cellBarred	–	notBarred	barred	Serving cell becomes barred
NOTE 1: Power level “Off” is defined in TS 36.508 Table 6.2.2.1-1.

NOTE: If the UE fails the test because of a failure to detect and reselect to a right cell, then the operator may re-run the test.

Table 6.1.2.3.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS re-adjusts the cell-specific reference signal level of Cell 1 and Cell 11 according to row "T1" in table 6.1.2.3.3.2-1.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 indicate that the UE is camped on E-UTRAN Cell 11? NOTE: The UE performs a TAU procedure and the RRC connection is released.	–	–	1	–
3	SS changes Cell 1 signal level and SIB1 IE cellBarred according to row "T2" in table 6.1.2.3.3.2-1 and transmits a Paging message including systemInfoModification. The systemInfoValueTag in the SystemInformationBlockType1 is increased.	<–	Paging	–	–
4	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 indicate that the UE is camped on E-UTRAN Cell 1? NOTE: The UE performs a TAU procedure and the RRC connection is released.	–	–	2	–

6.1.2.3.3.3 Specific message contents

Table 6.1.2.3.3.3-1: Void

Table 6.1.2.3.3.3-2: SystemInformationBlockType1 for cells 1 and 11 (preamble and all steps, Table 6.1.2.3.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-55 (-110 dBm)
}
systemInfoValueTag	The value is increased in step 3
}

Table 6.1.2.3.3.3-2A: SystemInformationBlockType1-BR-r13 for cells 1 and 11 (preamble and all steps when UE under test is CAT M1, Table 6.1.2.3.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1-BR-r13 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-55 (-110 dBm)
}
systemInfoValueTag	The value is increased in step 3
}

Table 6.1.2.3.3.3-3: SystemInformationBlockType3 for cells 1 and 11 (Preamble and all steps, table 6.1.2.3.3.2-2)

Derivation Path: 36.508 clause 4.4.3.3, Table 4.4.3.3-2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType3 ::= SEQUENCE {
cellReselectionInfoCommon SEQUENCE {
q-Hyst	dB0
}
intraFreqCellReselectionInfo SEQUENCE {
q-RxLevMin	-55 (-110 dBm)
t-ReselectionEUTRA	7
}
}

Table 6.1.2.3.3.3-4: SystemInformationBlockType1 for cell 11 (step 3, Table 6.1.2.3.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
cellBarred	barred
intraFreqReselection	allowed
}
systemInfoValueTag	1	Previous value is 0
}

Table 6.1.2.3.3.3-4A: SystemInformationBlockType1-BR-r13 for cell 11 (step 3 when UE under test is CAT M1, Table 6.1.2.3.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1-BR-r13 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
cellBarred	barred
intraFreqReselection	allowed
}
systemInfoValueTag	1	Previous value is 0
}

Table 6.1.2.3.3.3-5: Paging (step 3, Table 6.1.2.3.3.2-2)

Derivation path: 36.508 Table 4.6.1-7
Information Element	Value/Remark	Comment	Condition
Paging ::= SEQUENCE {
pagingRecordList	Not present
systemInfoModification	True
etws-PrimaryNotificationIndication	Not present
nonCriticalExtension SEQUENCE {}	Not present
}

6.1.2.3a Cell selection / Intra E-UTRAN / Serving cell becomes non-suitable (Srxlev > 0 and Squal < 0)

6.1.2.3a.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable (Srxlev > 0 and Squal < 0)and there is a suitable neighbour cell (Srxlev > 0 and Squal > 0) }

then { UE selects the suitable neighbour cell }

}

6.1.2.3a.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.300, clause 10.1.1.1 and TS 36.304, clause 4.1, 5.2.1, 5.2.3.2 and 5.2.4.6.

[TS 36.300, clause 10.1.1.1]

Cell selection:

– The UE NAS identifies a selected PLMN and equivalent PLMNs;

– The UE searches the E-UTRA frequency bands and for each carrier frequency identifies the strongest cell. It reads cell system information broadcast to identify its PLMN(s):

– The UE may search each carrier in turn (“initial cell selection”) or make use of stored information to shorten the search (“stored information cell selection”).

– An acceptable cell is one for which the measured cell attributes satisfy the cell selection criteria and the cell is not barred;

[TS 36.304, clause 4.1]

[TS 36.304, clause 5.2.1]

When camped on a cell, the UE shall regularly search for a better cell according to the cell reselection criteria. If a better cell is found, that cell is selected. The change of cell may imply a change of RAT. Details on performance requirements for cell reselection can be found in [10].

[TS 36.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Srxlev > 0 AND Squal > 0

where:

Srxlev = Q_rxlevmeas – (Q_rxlevmin + Q_{rxlevminoffset}) – Pcompensation

Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset})

where:

Srxlev	Cell selection RX level value (dB)
Squal	Cell selection quality value (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP)
Q_qualmeas	Measured cell quality value (RSRQ)
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_qualmin	Minimum required quality level in the cell (dB)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Q_{qualminoffset}	Offset to the signalled Q_qualmin taken into account in the Squal evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	max(P_EMAX –P_PowerClass, 0) (dB)
P_EMAX	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [TS 36.101]
P_PowerClass	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [TS 36.101]

[TS 36.304, clause 5.2.4.6]

In all cases, the UE shall reselect the new cell, only if the following conditions are met:

– the new cell is better ranked than the serving cell during a time interval Treselection_RAT;

– more than 1 second has elapsed since the UE camped on the current serving cell.

6.1.2.3a.3 Test description

6.1.2.3a.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 2 have different tracking areas according to table 6.0.1-2.

UE:

None.

Preamble:

– UE is in state Registered, Idle Mode (state 2) on Cell 1(serving cell) according to [18].

6.1.2.3a.3.2 Test procedure sequence

Table 6.1.2.3a.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. The exact instants on which these values shall be applied are described in the texts in this clause. Configurations marked "T1" is applied at the points indicated in the Main behaviour description in Table 6.1.2.3a.3.2-2.

Table 6.1.2.3a.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 2	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-97	-85	Srxlev_{Cell 1} > 0 and Squal_{Cell 1} < 0
	RSRQ	dB	-15.28	-3.28
	Qrxlevmin	dBm	-106	-92
	Qrxlevminoffset	dB	0	0
	Qqualmin	dB	-5	-20
	Qqualminoffset	dB	0	0
	Pcompensation	dB	0	0
	Srxlev*	dB	9	7	Cell 2 is suitable cell
	Squal*	dB	-10.28	16.72	Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset})
	Noc	dBm/15kHz	Off	Off

Table 6.1.2.3a.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS re-adjusts the cell-specific reference signal level of Cell 1 and Cell 2 according to row "T1" in table 6.1.2.3a.3.2-1.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 indicate that the UE is camped on E-UTRAN Cell 2? NOTE: The UE performs a TAU procedure and the RRC connection is released.	–	–	1	–

6.1.2.3a.3.3 Specific message contents

Table 6.1.2.3a.3.3-0: Conditions for table 6.1.2.3a.3.3-1, 6.1.2.3a.3.3-2

Condition descriptions
Cell 1 This condition applies to system information transmitted on Cell 1.
Cell 2 This condition applies to system information transmitted on Cell 2.

Condition descriptions

Cell 1

This condition applies to system information transmitted on Cell 1.

Cell 2

This condition applies to system information transmitted on Cell 2.

Table 6.1.2.3a.3.3-1: SystemInformationBlockType1 for Cell 1 and 2 (all steps, Table 6.1.2.3a.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2, Table 4.4.3.2-3
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-53 (-106 dBm)		Cell 1
q-RxLevMin	-46 (-92 dBm)		Cell 2
}
nonCriticalExtension SEQUENCE {
lateNonCriticalExtension	Not present
nonCriticalExtension SEQUENCE {
ims-EmergencySupport-r9	Not present
cellSelectionInfo-v920 SEQUENCE {
q-QualMin-r9	-5 dB		Cell 1
q-QualMin-r9	-20 dB		Cell 2
q-QualMinOffset-r9	Not present
}
}
}
}

Table 6.1.2.3a.3.3-1A: SystemInformationBlockType1-BR-r13 for Cell 1 and 2 (all steps when UE under test is CAT M1, Table 6.1.2.3a.3.2-2)

Derivation Path: 36.508 clause 4.4.3.2, Table 4.4.3.2-3A
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1-BR-r13 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-RxLevMin	-53 (-106 dBm)		Cell 1
q-RxLevMin	-46 (-92 dBm)		Cell 2
}
nonCriticalExtension SEQUENCE {
lateNonCriticalExtension	Not present
nonCriticalExtension SEQUENCE {
ims-EmergencySupport-r9	Not present
cellSelectionInfo-v920 SEQUENCE {
q-QualMin-r9	-5 dB		Cell 1
q-QualMin-r9	-20 dB		Cell 2
q-QualMinOffset-r9	Not present
}
}
}
}

Table 6.1.2.3a.3.3-2: SystemInformationBlockType3 for Cell 1 and 2 (all steps, table 6.1.2.3a.3.2-2)

Derivation Path: 36.508 clause 4.4.3.3, Table 4.4.3.3-2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType3 ::= SEQUENCE {
cellReselectionInfoCommon SEQUENCE {
q-Hyst	dB0
}
intraFreqCellReselectionInfo SEQUENCE {
q-RxLevMin	-53 (-106 dBm)		Cell 1
q-RxLevMin	-46 (-92 dBm)		Cell 2
t-ReselectionEUTRA	7
}
lateNonCriticalExtension {
s-IntraSearch-v920 SEQUENCE {}	Not present
s-NonIntraSearch-v920 SEQUENCE {}	Not present
q-QualMin-r9	-5 dB		Cell 1
q-QualMin-r9	-20 dB		Cell 2
threshServingLowQ-r9	Not present
}
}

6.1.2.4 Cell reselection

6.1.2.4.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { UE detects the cell ranked as the best cell }

then { UE reselects the new cell }

}

6.1.2.4.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 36.304, clause 5.2.4.2 and 5.2.4.6.

[TS 36.304, clause 5.2.4.2]

When evaluating for reselection purposes cell selection criterion or SnonServingCell,x, the UE shall use parameters provided by the serving cell.

Following rules are used by the UE to limit needed measurements:

– If S_intrasearch is sent in the serving cell and S_ServingCell > S_intrasearch, UE may choose to not perform intra-frequency measurements.

– If S_ServingCell <= S_intrasearch, or S_intrasearch is not sent in the serving cell UE shall perform intra-frequency measurements.

– The UE shall apply the following rules for E-UTRAN inter-frequencies and inter-RAT frequencies which are indicated in system information and for which the UE has priority provided as defined in 5.2.4.1:

– For an E-UTRAN inter-frequency or inter-RAT frequency with a reselection priority higher than the reselection priority of the current E-UTRA frequency the UE shall perform measurements of higher priority E-UTRAN inter-frequency inter-RAT frequencies according to [10].

– For an E-UTRAN inter-frequency with an equal or lower reselection priority than the reselection priority of the current E-UTRA frequency and for inter-RAT frequency with lower reselection priority than the reselection priority of the current E-UTRAN frequency:

– If S_{nonintrasearch} is sent in the serving cell and S_ServingCell > S_{nonintrasearch} UE may choose not to perform measurements of E-UTRAN inter-frequencies or inter-RAT frequency cells of equal or lower priority.

– If S_ServingCell <= S_{nonintrasearch} or S_{nonintrasearch} is not sent in the serving cell the UE shall perform measurements of E-UTRAN inter-frequencies or inter-RAT frequency cells of equal or lower priority according to [10].

Where S_ServingCell is the Srxlev-value of the serving cell.

[TS 36.304, clause 5.2.4.6]

The cell-ranking criterion Rs for serving cell and Rn for neighbouring cells is defined by:

where:

Q_meas

RSRP measurement quantity used in cell reselections.

Qoffset

For intra-frequency: Equals to Qoffsets,n, if Qoffsets,n is valid, otherwise this equals to zero.

For inter-frequency: Equals to Qoffset_s,n plus Qoffset_frequency, if Qoffset_s,n is valid, otherwise this equals to Qoffset_frequency.

The UE shall perform ranking of all cells that fulfil the cell selection criterion S, which is defined in 5.2.3.2, but may exclude all CSG cells that are known by the UE to be not allowed.

The cells shall be ranked according to the R criteria specified above, deriving Q_meas,n and Q_meas,s and calculating the R values using averaged RSRP results.

If a cell is ranked as the best cell the UE shall perform cell re-selection to that cell. If this cell is found to be not-suitable, the UE shall behave according to subclause 5.2.4.4.

In all cases, the UE shall reselect the new cell, only if the following conditions are met:

– the new cell is better ranked than the serving cell during a time interval Treselection_RAT

– more than 1 second has elapsed since the UE camped on the current serving cell.

6.1.2.4.3 Test description

6.1.2.4.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 2.

UE:

None.

Preamble:

– The UE is in state Registered, Idle mode (state 2) on Cell 1(serving cell) according to [18].

6.1.2.4.3.2 Test procedure sequence

Table 6.1.2.4.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. The configuration marked "T1" is applied at the point indicated in the Main behaviour description in Table 6.1.2.4.3.2-2.

Table 6.1.2.4.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 2	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-85	-79	The power level values are assigned to satisfy R_{Cell 1} < R_{Cell 2.}

Table 6.1.2.4.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The SS changes Cell 2 level according to the row "T1" in table 6.1.2.4.3.2-1.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 indicate that the UE is camped on E-UTRAN Cell 2?	–	–	1	–

6.1.2.4.3.3 Specific message contents

Table 6.1.2.4.3.3-1: Void

6.1.2.5 Cell reselection for interband operation

6.1.2.5.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { UE detects the cell re-selection criteria are met for the cell on the different frequency band }

then { UE reselects the new cell }

}

6.1.2.5.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 36.304, clause 5.2.4.1, 5.2.4.2 and 5.2.4.5.

[TS 36.304, clause 5.2.4.1]

Absolute priorities of different E-UTRAN frequencies or inter-RAT frequencies may be provided to the UE in the system information, in the RRCConnectionRelease message, or by inheriting from another RAT at inter-RAT cell (re)selection. In the case of system information, an E-UTRAN frequency or inter-RAT frequency may be listed without providing a priority (i.e. the field cellReselectionPriority is absent for that frequency). If priorities are provided in dedicated signalling, the UE shall ignore all the priorities provided in system information. If UE is in camped on any cell state, UE shall only apply the priorities provided by system information from current cell, and the UE preserves priorities provided by dedicated signalling unless specified otherwise. When the UE in camped normally state, has only dedicated priorities other than for the current frequency, the UE shall consider the current frequency to be the lowest priority frequency (i.e. lower than the eight network configured values). While the UE is camped on a suitable CSG cell, the UE shall always consider the current frequency to be the highest priority frequency (i.e. higher than the eight network configured values), irrespective of any other priority value allocated to this frequency. The UE shall delete priorities provided by dedicated signalling when:

– the UE enters RRC_CONNECTED state; or

– the optional validity time of dedicated priorities (T320) expires; or

– a PLMN selection is performed on request by NAS [5].

NOTE: Equal priorities between RATs are not supported.

The UE shall only perform cell reselection evaluation for E-UTRAN frequencies and inter-RAT frequencies that are given in system information and for which the UE has a priority provided.

The UE shall not consider any black listed cells as candidate for cell reselection.

The UE shall inherit the priorities provided by dedicated signalling and the remaining validity time (i.e., T320 in E-UTRA, T322 in UTRA and T3230 in GERAN), if configured, at inter-RAT cell (re)selection.

NOTE: The network may assign dedicated cell reselection priorities for frequencies not configured by system information.

[TS 36.304, clause 5.2.4.2]

When evaluating for reselection purposes cell selection criterion or SnonServingCell,x, the UE shall use parameters provided by the serving cell.

Following rules are used by the UE to limit needed measurements:

– If S_intrasearch is sent in the serving cell and S_ServingCell > S_intrasearch, UE may choose to not perform intra-frequency measurements.

– If S_ServingCell <= S_intrasearch, or S_intrasearch is not sent in the serving cell UE shall perform intra-frequency measurements.

– If S_ServingCell <= S_{nonintrasearch}or S_{nonintrasearch} is not sent in the serving cell the UE shall perform measurements of E-UTRAN inter-frequencies or inter-RAT frequency cells of equal or lower priority according to [10].

Where S_ServingCell is the Srxlev-value of the serving cell.

[TS 36.304, clause 5.2.4.5]

Criteria 1: the S_{nonServingCell,x} of a cell on evaluated frequency is greater than Thresh_{x, high} during a time interval Treselection_RAT;

Cell reselection to a cell on a higher priority E-UTRAN frequency or inter-RAT frequency than serving frequency shall be performed if:

– A cell of a higher priority E-UTRAN frequency or inter-RAT frequency fulfils criteria 1; and

– more than 1 second has elapsed since the UE camped on the current serving cell.

Cell reselection to a cell on an equal priority E-UTRAN frequency shall be based on ranking for Intra-frequency cell reselection as defined in sub-clause 5.2.4.6.

Cell reselection to a cell on a lower priority E-UTRAN frequency or inter-RAT frequency than serving frequency shall be performed if:

– No cell on a higher priority E-UTRAN frequency or inter-RAT frequency than serving frequency fulfils the criteria 1; and

– No cell on serving frequency or on an equal priority E-UTRAN frequency fulfils the criteria in 5.2.4.6; and

– S_ServingCell < Threshs_{erving, low} and the S_{nonServingCell,x} of a cell of a lower priority E-UTRAN frequency or inter-RAT frequency is greater than Thresh_{x, low} during a time interval Treselection_RAT; and

– more than 1 second has elapsed since the UE camped on the current serving cell.

For GERAN, UTRAN, and E-UTRAN, S_{nonServingCell,x} is the Srxlev-value of an evaluated cell. For UTRAN FDD, Squal is higher than 0, as defined in [8]. For cdma2000 RATs, S_{nonServingCell,x} is equal to FLOOR(-2 x 10 x log10 Ec/Io) in units of 0.5 dB, as defined in [18], with Ec/Io referring to the value measured from the evaluated cell.

For cdma2000 RATs, Threshx, high and Threshx, low are equal to -1 times the values signalled for the corresponding parameters in the system information.

In all the above criteria the value of Treselection_RAT is scaled when the UE is in the medium or high mobility state as defined in subclause 5.2.4.3.1. If more than one cell meets the above criteria, the UE shall reselect a cell ranked as the best cell among the cells meeting the criteria on the highest priority frequencies or the highest priority RAT if the highest priority RAT is E-UTRA according to criteria defined in 5.2.4.6.

6.1.2.5.3 Test description

6.1.2.5.3.1 Pre-test conditions

System Simulator:

– Cell 1, cell 10.

– System information combination 3 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None.

Preamble:

– The UE is in state Registered, Idle mode (state 2) on Cell 1 (serving cell) according to [18].

6.1.2.5.3.2 Test procedure sequence

Table 6.1.2.5.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. The configuration marked "T1" is applied at the point indicated in the Main behaviour description in Table 6.1.2.5.3.2-2.

Table 6.1.2.5.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 10	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-85	-73	Cell 10 become stronger than Thresh_{x, high.}

Table 6.1.2.5.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The SS changes Cell 10 power level according to the row "T1" in table 6.1.2.5.3.2-1.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 indicate that the UE is camped on E-UTRAN Cell 10?	–	–	1	–

6.1.2.5.3.3 Specific message contents

Table 6.1.2.5.3.3-0: Conditions for specific message contents
in Tables 6.1.2.5.3.3-1 and 6.1.2.5.3.3-2

Condition	Explanation
Cell 1	This condition applies to system information transmitted on Cell 1.
Cell 10	This condition applies to system information transmitted on Cell 10.
Band > 64	If band > 64 is selected

Table 6.1.2.5.3.3-1: SystemInformationBlockType3 for Cell 1 and Cell 10 (preamble and all steps, Table 6.1.2.5.3.2-2)

Derivation path: 36.508 table 4.4.3.3-2
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType3 ::= SEQUENCE {
cellReselectionServingFreqInfo SEQUENCE {
cellReselectionPriority	1		Cell 1
	5		Cell 10
}
}

Table 6.1.2.5.3.3-2: SystemInformationBlockType5 for Cell 1 and Cell 10 (preamble and all steps, Table 6.1.2.5.3.2-2)

Derivation path: 36.508 table 4.4.3.3-4
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType5 ::= SEQUENCE {
interFreqCarrierFreqList SEQUENCE (SIZE (1..maxFreq)) OF SEQUENCE {
dl-CarrierFreq	Same downlink EARFCN as used for Cell 10		Cell 1
dl-CarrierFreq	maxEARFCN		Band > 64
	Same downlink EARFCN as used for Cell 1		Cell 10
dl-CarrierFreq	maxEARFCN		Band > 64
t-ReselectionEUTRA	7
threshX-High	10	20dB
cellReselectionPriority	5		Cell 1
	1		Cell 10
}
SystemInformationBlockType5-v8h0-IEs SEQUENCE {			Band > 64
nonCriticalExtension SEQUENCE {
interFreqCarrierFreqList-v9e0 SEQUENCE (SIZE (1..maxFreq)) OF SEQUENCE {
dl-CarrierFreq-v9e0	Same downlink EARFCN as used for Cell 10		Cell 1
dl-CarrierFreq-v9e0	Same downlink EARFCN as used for Cell 1		Cell 10
}
}
}
}

6.1.2.5a Cell reselection for interband operation/ Power Class 2 UE operation/ Between FDD and TDD

6.1.2.5a.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state on a FDD band}

ensure that {

when { UE detects the power class 2 cell re-selection criteria is met for the cell on a TDD band }

then { UE reselects to the new cell }

}

6.1.2.5a.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 36.304, clause 5.2.3.2, 5.2.4.1, 5.2.4.2 and 5.2.4.5.

[TS 36.304, clause 5.2.3.2]

The cell selection criterion S in normal coverage is fulfilled when:

Srxlev > 0 AND Squal > 0

where:

Srxlev = Q_rxlevmeas – (Q_rxlevmin + Q_{rxlevminoffset}) – Pcompensation – Qoffset_temp

Squal = Q_qualmeas – (Q_qualmin + Q_{qualminoffset}) – Qoffset_temp

where:

Srxlev	Cell selection RX level value (dB)
Squal	Cell selection quality value (dB)
Qoffset_temp	Offset temporarily applied to a cell as specified in [3] (dB)
Q_rxlevmeas	Measured cell RX level value (RSRP)
Q_qualmeas	Measured cell quality value (RSRQ)
Q_rxlevmin	Minimum required RX level in the cell (dBm)
Q_qualmin	Minimum required quality level in the cell (dB)
Q_{rxlevminoffset}	Offset to the signalled Q_rxlevmin taken into account in the Srxlev evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Q_{qualminoffset}	Offset to the signalled Q_qualmin taken into account in the Squal evaluation as a result of a periodic search for a higher priority PLMN while camped normally in a VPLMN [5]
Pcompensation	If the UE supports the additionalPmax in the NS-PmaxList, if present, in SIB1, SIB3 and SIB5: max(P_EMAX1 –P_PowerClass, 0) – (min(P_EMAX2, P_PowerClass) – min(P_EMAX1, P_PowerClass)) (dB); else: max(P_EMAX1 –P_PowerClass, 0) (dB);
P_EMAX1, P_EMAX2	Maximum TX power level an UE may use when transmitting on the uplink in the cell (dBm) defined as P_EMAXin [33]. P_EMAX1 and P_EMAX2 are obtained from the p-Max and the NS-PmaxList respectively in SIB1, SIB3 and SIB5 as specified in TS 36.331 [3].
P_PowerClass	Maximum RF output power of the UE (dBm) according to the UE power class as defined in [33]