6.2.2 Inter-RAT cell selection

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

6.2.2.1 Inter-RAT Cell selection / From E-UTRA RRC_IDLE to UTRA_Idle / Serving cell becomes non-suitable

6.2.2.1.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable and there is a suitable UTRA neighbour cell }

then { UE selects the suitable UTRA neighbour cell }

(2)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

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

then { UE selects the suitable UTRA neighbour cell }

}

Note: (SServingCell<0 or barred) condition is for Rel 8; (Srxlev<0 or Squal<0 or barred) condition is for Rel 9.

6.2.2.1.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.304, clause 4.1, 4.3,5.2.1, 5.2.3.2 and 5.3.1. TS 25.304, clause 5.2.3.2.

[TS 36.304, clause 4.1]

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 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].

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 4.3]

suitable cell:

A "suitable cell" is a cell on which the UE may camp on to obtain normal service. Such a cell shall fulfil all the following requirements.

The cell is part of either:
the selected PLMN, or:
the registered PLMN, or:
a PLMN of the Equivalent PLMN list

according to the latest information provided by NAS:

– The cell is not barred, see subclause 5.3.1;

– The cell is part of at least one TA that is not part of the list of "forbidden tracking areas for roaming" [4], which belongs to a PLMN that fulfils the first bullet above;

– The cell selection criteria are fulfilled, see subclause 5.2.3.2;

– For a CSG cell, the CSG ID is part of the allowed CSG list of the UE.

If more than one PLMN identity is broadcast in the cell, the cell is considered to be part of all TAs with TAIs constructed from the PLMN identities and the TAC broadcast in the cell.

barred cell:

A cell is barred if it is so indicated in the system information [3].

[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:

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 5.3.1]

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, 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 as a candidate for cell selection/reselection for 300 seconds.

The cell selection of another cell may also include a change of RAT.

[TS 25.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Where:

Squal	Cell Selection quality value (dB) Applicable only for FDD cells.
Srxlev	Cell Selection RX level value (dB)
Q_qualmeas	Measured cell quality value. The quality of the received signal expressed in CPICH Ec/N0 (dB) for FDD cells. CPICH Ec/N0 shall be averaged as specified in [10]. Applicable only for FDD cells.
Q_rxlevmeas	Measured cell RX level value. This is received signal, CPICH RSCP for FDD cells (dBm) and P-CCPCH RSCP for TDD cells (dBm).
Qqualmin	Minimum required quality level in the cell (dB). Applicable only for FDD cells.
Qrxlevmin	Minimum required RX level in the cell (dBm)
Pcompensation	max(UE_TXPWR_MAX_RACH – P_MAX, 0) (dB)
UE_TXPWR_MAX_RACH	Maximum TX power level an UE may use when accessing the cell on RACH (read in system information) (dBm)
P_MAX	Maximum RF output power of the UE (dBm)

6.2.2.1.3 Test description

6.2.2.1.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 5

– System information combination 4 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None.

Preamble:

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

6.2.2.1.3.2 Test procedure sequence

Tables 6.2.2.1.3.2-1 & 6.2.2.1.3.2-2 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Subsequent configurations marked "T1", "T2" and " T3" are applied at the points indicated in the Main behaviour description in Table 6.2.2.1.3.2-3.

Table 6.2.2.1.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm	-120	Srxlev_{Cell 1} < 0
T1	Srxlev*	dB	-10	Cell 5 becomes the strongest cell
T2	Cell-specific RS EPRE	dBm	-60
T3	Cell-specific RS EPRE	dBm	-60	Srxlev_{Cell 1} > Srxlev_{Cell 5} > 0
	Srxlev*	dB	50
	cellBarred	–	Barred	Serving cell becomes barred
Note: Srxlev is calculated in the UE

Table 6.2.2.1.3.2-2: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 5	Remark
T1	CPICH_Ec	dBm/3.84 MHz	-70	Srxlev_{Cell 5} > 0,for FDD
	P-CCPCH	dBm/1.28 MHz	-72	Srxlev_{Cell 5} > 0,for TDD
	Srxlev*	dB	9	Cell 5 becomes the strongest cell or the suitable cell
T2	CPICH_Ec	dBm/3.84 MHz	OFF
T2	P-CCPCH	dBm/1.28 MHz	OFF
T3	CPICH_Ec	dBm/3.84 MHz	-70	Srxlev_{Cell 5} > 0,for FDD
	P-CCPCH	dBm/1.28 MHz	-72	Srxlev_{Cell 5} > 0,for TDD
	Srxlev*	dB	9
Note: Srxlev is calculated in the UE

Table 6.2.2.1.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
0	Wait for 6 s for UE to receive system information.	–	–	–	–
1	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T1" in table 6.2.2.1.3.2-1 & Cell 5 power level is set according to row "T1" in table 6.2.2.1.3.2-2.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.8 indicate that the UE is camped on UTRAN Cell 5? NOTE: The UE performs a RAU procedure and the RRC connection is released.	–	–	1	–
–	Exception: Steps 2Aa1 to 2Aa1b1 describe optional behaviour that depend on the UE capability.	–	–	–	–
2Aa1	IF pc_IMS = TRUE THEN SS starts 6s timer	–	–	–	–
2Aa1a1-2Aa1a3a6	The procedure defined in TS 36.523-3 Table 10.1.2.1-2 Steps 1-4a6 is performed	–	–	–	–
2Aa1a4	SS releases RRC Connection	–	–	–	–
2Aa1a5	SS Stops 6s timer	–	–	–	–
2Aa1b1	The 6s timer expires	–	–	–	–
3	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T2" in table 6.2.2.1.3.2-1 & Cell 5 power level is set according to row "T2" in table 6.2.2.1.3.2-2.	–	–	–	–
4A-4G	Generic test procedure in TS 36.508 Table 6.4.2.7A-1 steps 1-7 are performed and the UE will camped on E-UTRAN Cell 1. NOTE: The UE performs a TAU procedure.	–	–	–	–
–	EXCEPTION: Steps 4Ha1 to 4Ha2b1 describe optional behaviour if UE sends IMS deregistration at steps 2Aa1 to 2Aa1b1	–	–	–	–
4Ha1-4Ha2b1	The procedure defined in TS 36.508 subclause 4.5A.3 Steps 10a1-10a2b1 is performed	–	–	–	–
4I	The SS releases RRC Connection
5	Wait for 6 s for UE to receive system information.	–	–	–	–
6	SS changes Cell 5 power level according to row "T3" in table 6.2.2.1.3.2-2 and modifies System Information so that Cell 1 becomes barred according to row "T3" in table 6.2.2.1.3.2-1. The SS transmits a Paging message including systemInfoModification.	<–	Paging	–	–
6A	Void	–	–	–	–
7	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.8 indicate that the UE is camped on UTRAN Cell 5? NOTE: The UE performs a RAU procedure.	–	–	2	–

6.2.2.1.3.3 Specific message contents

Table 6.2.2.1.3.3-1: SystemInformationBlockType1 for Cell 1 (preamble and steps 1 to 5, Table 6.2.2.1.3.2-3)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
}

Table 6.2.2.1.3.3-2: Paging for Cell 1 (step 6, Table 6.2.2.1.3.2-3)

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

Table 6.2.2.1.3.3-3: SystemInformationBlockType1 for Cell 1 (step 6, Table 6.2.2.1.3.2-3)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
cellBarred	barred
}
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
systemInfoValueTag	1	Previous value is 0
}

6.2.2.2 Inter-RAT Cell selection / From E-UTRA RRC_IDLE to GSM_Idle/GPRS Packet_idle / Serving cell becomes non-suitable

6.2.2.2.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable and there is a suitable GSM neighbour cell }

then { UE selects the suitable GSM neighbour cell }

(2)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

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

then { UE selects the suitable GSM neighbour cell }

}

NOTE: (SServingCell<0 or barred) conidtion is for Rel 8; (Srxlev<0 or Squal<0 or barred) condition is for Rel 9.

6.2.2.2.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 36.304, clause 4.1, 4.3,5.2.1, 5.2.3.2, 5.3.1, 43.022, clause 3.6 and TS 45.008, clause 6.4.

[TS 36.304, clause 4.1]

[TS 36.304, clause 4.3]

suitable cell:

A "suitable cell" is a cell on which the UE may camp on to obtain normal service. Such a cell shall fulfil all the following requirements.

The cell is part of either:
the selected PLMN, or:
the registered PLMN, or:
a PLMN of the Equivalent PLMN list

according to the latest information provided by NAS:

– The cell is not barred, see subclause 5.3.1;

– The cell is part of at least one TA that is not part of the list of "forbidden tracking areas for roaming" [4], which belongs to a PLMN that fulfils the first bullet above;

– The cell selection criteria are fulfilled, see subclause 5.2.3.2;

– For a CSG cell, the CSG ID is part of the allowed CSG list of the UE.

If more than one PLMN identity is broadcast in the cell, the cell is considered to be part of all TAs with TAIs constructed from the PLMN identities and the TAC broadcast in the cell.

barred cell:

A cell is barred if it is so indicated in the system information [3].

[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 5.3.1]

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, 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

– 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 as a candidate for cell selection/reselection for 300 seconds.

The cell selection of another cell may also include a change of RAT.

[TS 43.022, clause 3.6]

The MS uses a "path loss criterion" parameter C1 to determine whether a cell is suitable to camp on. C1 depends on 4 parameters:

i) The received signal level (suitably averaged);

ii) The parameter RXLEV_ACCESS_MIN, which is broadcast as system information, and is related to the minimum signal that the operator wants the network to receive when being initially accessed by an MS;

iii) The parameter MS_TXPWR_MAX_CCH, which is also broadcast as system information, and is the maximum power that an MS may use when initially accessing the network;

iv) The maximum power of the MS.

The formula for determining C1 is given in 3GPP TS 45.008.

Use of the parameter C1 enables the MS to determine whether communication is possible with the network in the absence of interference. However because of the possibility of interference degrading the communications, an additional safeguard is used. This is to monitor the success rate of the MS in decoding signalling blocks of the paging subchannel. If there is a downlink signalling failure, i.e. the success rate drops too low, this indicates probable interference on the downlink, and the MS attempts to find another suitable cell. Downlink signalling failure monitoring is specified in 3GPP TS 45.008.

In order to optimize cell reselection, additional cell reselection parameters can be broadcast as system information of each cell. The cell reselection process employs a parameter C2 which depends on these parameters.

The parameters used to calculate C2 are as follows:

i) CELL_RESELECT_OFFSET (see subclause 3.5.2.2);

ii) PENALTY_TIME;

When the MS places the cell on the list of the strongest carriers as specified in 3GPP TS 45.008, it starts a timer which expires after the PENALTY_TIME. This timer will be reset when the cell is taken off the list. For the duration of this timer, C2 is given a negative offset. This will tend to prevent fast moving MSs from selecting the cell.

iii) TEMPORARY_OFFSET;

This is the amount of the negative offset described in (ii) above. An infinite value can be applied, but a number of finite values are also possible.

The permitted values of these parameters and the way in which they are combined to calculate C2 are defined in 3GPP TS 45.008.

Instead of the parameter C2, a GPRS MS applies the corresponding GPRS parameter if provided.

[TS 45.008, clause 6.4]

The path loss criterion parameter C1 used for cell selection and reselection is defined by:

C1 = (A ‑ Max(B,0))

where

A = RLA_C ‑ RXLEV_ACCESS_MIN
B = MS_TXPWR_MAX_CCH ‑ P

except for the class 3 DCS 1 800 MS where:

B = MS_TXPWR_MAX_CCH + POWER OFFSET ‑ P
RXLEV_ACCESS_MIN = Minimum received signal level at the MS required for access to the system.
MS_TXPWR_MAX_CCH = Maximum TX power level an MS may use when accessing the system until otherwise commanded.

POWER OFFSET = The power offset to be used in conjunction with the MS TXPWR
MAX CCH parameter by the class 3 DCS 1 800 MS.
P = Maximum RF output power of the MS.

All values are expressed in dBm.

The path loss criterion (3GPP TS 43.022) is satisfied if C1 > 0.

6.2.2.2.3 Test description

6.2.2.2.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 24

– System information combination 5 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None.

Preamble:

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

6.2.2.2.3.2 Test procedure sequence

Tables 6.2.2.2.3.2-1 & 6.2.2.2.3.2-2 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Subsequent configurations marked "T1", "T2" and "T3" are applied at the points indicated in the Main behaviour description in Table 6.2.2.2.3.2-3.

Table 6.2.2.2.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm	-120	Srxlev_{Cell 1} < 0
T1	Srxlev*	dB	-10	Cell 24 becomes the strongest cell
T2	Cell-specific RS EPRE	dBm	-60
T3	Cell-specific RS EPRE	dBm	-60	Srxlev_{Cell 1} > Srxlev_{Cell 24} > 0
	Srxlev*	dB	50
	cellBarred	–	Barred	Serving cell becomes barred
Note: Srxlev is calculated in the UE

Table 6.2.2.2.3.2-2: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 24	Remark
T1	RF Signal Level	dBm	-80	Srxlev_{Cell 24} > 0
T1	C1*	dB	20	Cell 24 becomes the strongest cell
T2	RF Signal Level	dBm	OFF
T3	RF Signal Level	dBm	-80	Srxlev_{Cell 24} > 0
T3	C1*	dB	20
Note: C1 is calculated in the UE

Table 6.2.2.2.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
0	Void	–	–	–	–
1	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T1" in table 6.2.2.2.3.2-1 & cell 24 power level is set according to row "T1" in table 6.2.2.2.3.2-2.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.9 indicate that the UE is camped on GERAN Cell 24? NOTE: The UE performs a RAU procedure.	–	–	1	–
3	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T2" in table 6.2.2.2.3.2-1 & Cell 24 power level is set according to row "T2" in table 6.2.2.2.3.2-2.	–	–	–	–
4	Generic test procedure in TS 36.508 Table 6.4.2.7A-2 is performed and the UE will be camped on E-UTRAN Cell 1.	–	–	–	–
5	Void	–	–	–	–
6	SS changes Cell 24 power level according to row "T3" in table 6.2.2.2.3.2-2 and modifies System Information so that Cell 1 becomes barred according to row "T3" in table 6.2.2.2.3.2-1. SI2Quater for cell 24 is updated according to table 6.2.2.2.3.3-4 to reflect the cell barring. The SS transmits a Paging message including systemInfoModification.	<–	Paging	–	–
7	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.9 indicate that the UE is camped on GERAN Cell 24? NOTE: The UE performs a RAU procedure. The UE may but does not need to reset LLC.	–	–	2	–

6.2.2.2.3.3 Specific message contents

Table 6.2.2.2.3.3-1: SystemInformationBlockType1 for Cell 1 (preamble and steps 1 to 5, Table 6.2.2.2.3.2-3)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
}

Table 6.2.2.2.3.3-2: SystemInformationBlockType1 for Cell 1 (step 6, Table 6.2.2.2.3.2-3)

Derivation Path: 36.508 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellAccessRelatedInfo SEQUENCE {
cellBarred	barred
}
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
systemInfoValueTag	1	Previous value is 0
}

Table 6.2.2.2.3.3-3: Paging for Cell 1 (step 6, Table 6.2.2.2.3.2-3)

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

Table 6.2.2.2.3.3-4: Repeated E-UTRAN Neighbour Cells struct of SI2Quarter for Cell 24 (step 6, Table 6.2.2.3.2-3)

Derivation Path: 36.508 Table 4.4.5-1
Information Element	Value/remark	Comment	Condition
Repeated E-UTRAN Not Allowed Cells struct > ::= {
Not Allowed Cells : < PCID Group IE >>{
PCID}	‘000000000’B	PCID=0, Meaning that the Cell 1 which have PCID=0 will not be allowed
E-UTRAN_FREQUENCY_INDEX	‘000’B	Cell 1
}

6.2.2.3 Inter-RAT Cell selection / From E-UTRA RRC_IDLE to HRPD Idle / Serving cell becomes non-suitable

6.2.2.3.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

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

then { UE selects the suitable neighbour HRPD cell }

}

Note: (SServingCell<0 or barred) conidtion is for rel 8; (Srxlev<0 or Squal<0 or barred) condition is for rel 9.

6.2.2.3.2 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, and 5.2.3.2.

[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]

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 5.2.1]

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).
Qrxlevmin	Minimum required RX level in the cell (dBm)
Qrxlevminoffset	Offset to the signalled Qrxlevmin 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	[FFS]

6.2.2.3.3 Test description

6.2.2.3.3.1 Pre-test conditions

System Simulator:

– Cell 1 is a cell on E-UTRA

– Cell 15 is a cell on HRPD

– System information combination 6 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None

Preamble:

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

6.2.2.3.3.2 Test procedure sequence

Table 6.2.2.3.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Subsequent configurations marked "T1" and “T2” are applied at the points indicated in the Main behaviour description in Table 6.2.2.3.3.2-2.

Table 6.2.2.3.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 15	Remark


T1	Îor/Ioc	dB	–	-5	Cell 15 is on
	Ioc	dBm/1.23 MHz	–	-55
	Pilot Ec/Io (Note 1)	dB	–	-6
	Cell-specific RS EPRE	dBm/15 KHz	-60
T2	Cell-specific RS EPRE	dBm/15 kHz	-120	–	Srxlev_{Cell 1}<0 and Cell 15 becomes the strongest cell
	Srxlev*	dB	-10	–	Srxlev_{Cell 1}<0 and Cell 15 becomes the strongest cell
	Îor/Ioc	dB	–	-5
	Ioc	dBm/1.23 MHz	–	-55
	Pilot Ec/Io (Note 1)	dB	–	-6
Note 1: This parameter is not directly settable, but is derived by calculation from the other parameters set by the SS.

Table 6.2.2.3.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
	Procedure	U – S	Message
1	SS re-adjusts the cell-specific reference signal level of Cell 15 according to "T1" in 6.2.2.3.3.2-1.	–	–	–	–
1A	SS waits [10s] to allow the UE to read the system information	–	–	–	–
2	SS re-adjusts the cell-specific reference signal level of Cell 1 according to "T2" in 6.2.2.3.3.2-1.	–	–	–	–
3	Check: Does the UE transmit an Access Probe on Cell 15?	–>	Access Probe	1	P

6.2.2.3.3.3 Specific message contents

Table 6.2.2.3.3.3-1 SystemInformationBlockType1 to Cell 1 (Preamble and all steps, table 6.2.2.3.3.2-2)

Derivation path: 36.508 table clause 4.4.3.2
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
}

Table 6.2.2.3.3.3-2: SystemInformationBlockType8 to Cell 1 (Preamble and all steps, table 6.2.2.3.3.2-2)

Derivation path: 36.508 table 4.4.3.3
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType8 ::= SEQUENCE {
systemTimeInfo SEQUENCE {
cdma-EUTRA-Synchronisation	TRUE
cdma-SystemTime CHOICE {
synchronousSystemTime	A valid value as per TS 36.331 and calculated by the SS
}
}
searchWindowSize	5
parametersHRPD SEQUENCE {
cellReselectionParametersHRPD SEQUENCE {
bandClassList SEQUENCE (SIZE (1..maxCDMA -BandClass)) OF SEQUENCE {	The same number of entries as the configured HRPD carriers
bandClass	Band Class of frequency under test	[Set according to specific test case]
cellReselectionPriority	5	[3 is applicable when HRPD is lower priority than E-UTRA. 5 is applicable when HRPD is higher priority than E-UTRA]
threshX-High	30(-30)	INTEGER (0..63)
threshX-Low	32(-32)	INTEGER (0..63)
}
t-ReselectionCDMA2000	0	INTEGER (0..7)
}
}
}

6.2.2.4 Inter-RAT Cell selection / From E-UTRAN RRC_IDLE to 1xRTT idle / Serving cell becomes non-suitable

6.2.2.4.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable and

there is a suitable neighbour 1xRTT cell (S>0) }

then { UE selects the suitable neighbour 1xRTT cell }

}

Note: (SServingCell<0 or barred) conidtion is for rel 8; (Srxlev<0 or Squal<0 or barred) condition is for rel 9.

6.2.2.4.2 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, and 5.2.3.2.

[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.

[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. 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).
Qrxlevmin	Minimum required RX level in the cell (dBm)
Qrxlevminoffset	Offset to the signalled Qrxlevmin 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	[FFS]

6.2.2.4.3 Test description

6.2.2.4.3.1 Pre-test conditions

System Simulator:

– Cell 1 is a cell on E-UTRA

– Cell 19 is a cell on 1xRTT

– System information combination 6 as defined in TS 36.508 [18] clause 4.4.3.1 is used in E-UTRA cells.

UE:

None.

Preamble:

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

6.2.2.4.3.2 Test procedure sequence

Table 6.2.2.4.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. The configurations marked "T1" and “T2” are applied at the point indicated in the Main behaviour description in Table 6.2.2.4.3.2-2

Table 6.2.2.4.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 19	Remark
T1	Îor/Ioc	dB	–	0	Cell 19 is on
	Pilot Ec/ Ior			-7
	Ioc	dBm	–	-75
	CPICH_Ec/Io (Note 1)	dB	–	-10
	Cell-specific RS EPRE	dBm/15 KHz	-75	–
T2	Îor/Ioc	dB	–	0	Srxlev_{Cell 1}<0 and Cell 19 becomes the strongest cell
	Pilot Ec/ Ior	dB	–	-7
	Ioc	dBm/1.23 MHz	–	-75
	CPICH_Ec/Io (Note 1)	dB	–	-10
	Cell-specific RS EPRE	dBm/15 KHz	-120	–
Note 1: This parameter is not directly settable, but is derived by calculation from the other parameters set by the SS.

Table 6.2.2.4.3.2-2: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS re-adjusts the cell-specific reference signal levels according to row “T1” in Table 6.2.2.4.3.2-1.	–	–	–	–
1A	SS waits [10s] to allow the UE to read the system information.	–	–	–	–
2	SS re-adjusts the cell-specific reference signal levels according to row "T2" in Table 6.2.2.4.3.2-1.	–	–	–	–
3	Check: Does the UE transmit an Access Probe on Cell 19?	–>	Access Probe	1	P

6.2.2.4.3.3 Specific message contents

Table 6.2.2.4.3.3-1 SystemInformationBlockType1 to Cell 1 (Preamble and all steps, table 6.2.2.4.3.2-1)

Derivation path: 36.508 table clause 4.4.3.2
Information Element	Value/Remark	Comment	Condition
SystemInformationBlockType1 ::= SEQUENCE {
cellSelectionInfo SEQUENCE {
q-Rxlevmin	-55 (-110 dBm)
q-Rxlevminoffset	Not present
}
}

6.2.2.5 Cell selection / No USIM

6.2.2.5.1 Test Purpose (TP)

(1) Void

(2)

with { UE supporting E-UTRA and UTRAN and supporting Voice services, but not IMS speech and fitted with no SIM/USIM }

ensure that {
when { UE is switched on and there are E-UTRA and UTRAN cells available with the E-UTRA cell preferable from cell power point of view and UE is requested to make an emergency call }

then { UE camps on the UTRAN cell and initiates an Emergency call }

}

6.2.2.5.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 22.101 clause 10.1 and TS 23.221, clause 7.2a.

[TS 22.101, clause 10.1]

Emergency calls shall be supported by the UE without a SIM/USIM/ISIM being present. No other type than emergency calls shall be accepted without a SIM/USIM/ISIM.

[TS 23.221, clause 7.2a]

In limited service state, a UE should always camp on a RAT which is likely to support emergency calls.

The TS 23.167 [33] describes when an emergency call is to be initiated in the CS domain or using IMS. When the CS domain is to be used the following applies:

– A CSFB/IMS enabled UE which is registered in the CS domain, e.g. using CSFB procedures or using above-mentioned selection principles, shall initiate emergency call attempts in the CS domain by using available CS domain procedures.

– A CS Voice capable UE which is not registered in the CS domain shall initiate emergency calls in the CS domain by autonomously switching to a RAT which supports the CS domain (e.g. GERAN or UTRAN).

6.2.2.5.3 Test description

6.2.2.5.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 5.

Table 6.2.2.5.3.1-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 5
T0	Cell-specific RS EPRE	dBm	-70	–
	CPICH_Ec (UTRA FDD)	dBm/3.84 MHz	–	-75
	PCCPCH_Ec (UTRA LCR TDD)	dBm/1.28 MHz	–	-77

UE:

– The UE is not equipped with a USIM.

Preamble:

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

6.2.2.5.3.2 Test procedure sequence

Table 6.2.2.5.3.2-1: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	The UE is switched on.	–	–	–	–
2	Wait for 60s for the UE to complete cell selection. E-UTRA cell is more powerful than UTRA cell	–	–	–	–
3	Cause the UE to originate Emergency call. (see Note 1)	–	–	–	–
4	Check: Does the UE transmit an RRC CONNECTION REQUEST message on Cell 5?	–>	RRC CONNECTION REQUEST	2	P
5	The SS transmits an RRC CONNECTION SETUP message on Cell 5.	<–	RRC CONNECTION SETUP	–	–
6	The UE transmits an RRC CONNECTION SETUP COMPLETE message on Cell 5.	–>	RRC CONNECTION SETUP COMPLETE	–	–
7	The UE transmits an INITIAL DIRECT TRANSFER message on Cell 5. This message includes a CM SERVICE REQUEST message.	–>	INITIAL DIRECT TRANSFER	–	–
8	The SS transmits a DOWNLINK DIRECT TRANSFER message on Cell 5. This message includes a CM SERVICE ACCEPT message.	<–	DOWNLINK DIRECT TRANSFER	–	–
9	The UE transmits an UPLINK DIRECT TRANSFER message on Cell 5. This message includes an EMERGENCY SETUP message.	–>	UPLINK DIRECT TRANSFER	–	–
10	The SS transmits a DOWNLINK DIRECT TRANSFER message on Cell 5. This message includes a CALL PROCEEDING message.	<–	DOWNLINK DIRECT TRANSFER	–	–
11	The SS transmits a RADIO BEARER SETUP message on Cell 5.	<–	RADIO BEARER SETUP	–	–
12	The UE transmits a RADIO BEARER SETUP COMPLETE message on Cell 5.	–>	RADIO BEARER SETUP COMPLETE	–	–
13	The SS transmits a DOWNLINK DIRECT TRANSFER message on Cell 5. This message includes an ALERTING message.	<–	DOWNLINK DIRECT TRANSFER	–	–
14	The SS transmits a DOWNLINK DIRECT TRANSFER message on Cell 5. This message includes a CONNECT message.	<–	DOWNLINK DIRECT TRANSFER	–	–
15	The UE transmits an UPLINK DIRECT TRANSFER message on Cell 5. This message includes a CONNECT ACKNOWLEDGE message.	–>	UPLINK DIRECT TRANSFER	–	–
Note 1: The request to originate an emergency call may be performed by MMI or AT command.

6.2.2.5.3.3 Specific message contents

None.

6.2.2.6 Inter-RAT Cell selection / From GSM_Idle/GPRS Packet_idle to E-UTRA_RRC_IDLE / Serving cell becomes non-suitable

6.2.2.6.1 Test Purpose (TP)

(1)

with { UE in GSM/GPRS Registered state and no RR connection }

ensure that {

when { the serving cell becomes non-suitable and there is a suitable E-UTRA neighbour cell }

then { UE selects the suitable E-UTRA neighbour cell }

6.2.2.6.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 45.008, clause 6.4 .

…

[TS 45.008, clause 6.4]

The path loss criterion parameter C1 used for cell selection and reselection is defined by:

C1 = (A ‑ Max(B,0))

where

A = RLA_C ‑ RXLEV_ACCESS_MIN
B = MS_TXPWR_MAX_CCH ‑ P

except for the class 3 DCS 1 800 MS where:

POWER OFFSET = The power offset to be used in conjunction with the MS TXPWR
MAX CCH parameter by the class 3 DCS 1 800 MS.
P = Maximum RF output power of the MS.

All values are expressed in dBm.

The path loss criterion (3GPP TS 43.022) is satisfied if C1 > 0.

6.2.2.6.3 Test description

6.2.2.6.3.1 Pre-test conditions

System Simulator:

– Two cells:

– One GERAN cell, Cell 24 is serving cell.

– One E-UTRAN cell, Cell 1 is Suitable neighbour inter-RAT cell.

UE:

None.

Preamble:

– The UE is in state Registered, Idle mode according to section 4.5A.3B [18] on Cell 24.

6.2.2.6.3.2 Test procedure sequence

Tables 6.2.2.6.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after the preamble, while rows marked "T1" are to be applied subsequently. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.2.6.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 24	Remark
T0	Cell-specific RS EPRE	dBm/15kHz	-120	–	Srxlev_{Cell 1}< 0
	Qrxlevmin	dBm	-110	–	–
	Srxlev*	dB	N/A	–	–
	RF Signal level	dBm	–	-80	–
T1	Cell-specific RS EPRE	dBm/15kHz	-70	–	–
	Srxlev*	dB	30	–	Srxlev_{Cell 1} >THRESH_E-UTRAN_high
	RF Signal level	dBm	–	OFF	–
Note: Srxlev is calculated in the UE

Table 6.2.2.6.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS adjusts cell levels according to row T1 of table 6.2.2.6.3.2-1	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 subclause 6.4.2.7 A-2 indicate that the UE is camped on E-UTRAN Cell 1? NOTE: The UE performs a TAU procedure and the RRC connection is released.	–	–	1	–

6.2.2.6.3.3 Specific message contents

None.

6.2.2.7 Inter-RAT Cell selection / From GSM_Idle/GPRS Packet_idle to E-UTRA_RRC_IDLE ,when the serving cell is barred.

6.2.2.7.1 Test Purpose (TP)

(1)

with { UE in GSM/GPRS Registered state and no RR connection }

ensure that {

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

then { UE selects the suitable E-UTRA neighbour cell }

}

6.2.2.7.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 45.008, clause 6.4 and 6.6.1, TS 43.022, clause 3.2.1.

[TS 45.008, clause 6.4]

The path loss criterion parameter C1 used for cell selection and reselection is defined by:

C1 = (A ‑ Max(B,0))

where

A = RLA_C ‑ RXLEV_ACCESS_MIN
B = MS_TXPWR_MAX_CCH ‑ P

except for the class 3 DCS 1 800 MS where:

POWER OFFSET = The power offset to be used in conjunction with the MS TXPWR
MAX CCH parameter by the class 3 DCS 1 800 MS.
P = Maximum RF output power of the MS.

All values are expressed in dBm.

The path loss criterion (3GPP TS 43.022) is satisfied if C1 > 0.

[TS 45.008, clause 6.6.1]

The MS shall attempt to decode the full BCCH data of the serving cell at least every 30 seconds or at least as often as possible in the case that system information scheduling period exceeds 30 seconds.

If SI13 is broadcast, the MS supporting change mark in SI13 (See 3GPP TS 44.018) is only required to confirm system information on the BCCH of the serving cell if indicated by change mark in SI13.

[TS 43.022, clause 3.2.1]

The choice of such a suitable cell for the purpose of receiving normal service is referred to as "normal camping". There are various requirements that a cell must satisfy before an MS can perform normal camping on it:

i) It should be a cell of the selected PLMN or, if the selected PLMN is equal to the last registered PLMN, an equivalent PLMN;

ii) It should not be "barred" (see subclause 3.5.1);

6.2.2.7.3 Test description

6.2.2.7.3.1 Pre-test conditions

System Simulator:

– Two cells:

– One GERAN cell, Cell 24 is serving cell.

– One E-UTRAN cell, Cell 1 is Suitable neighbour inter-RAT cell.

UE:

None.

Preamble:

– The UE is in state Registered, Idle mode according to section 4.5A.3B [18] on Cell 24

6.2.2.7.3.2 Test procedure sequence

Tables 6.2.2.7.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after the preamble, while rows marked "T1" are to be applied subsequently. The exact instants on which these values shall be applied are described in the texts in this clause.

Table 6.2.2.7.3.2-1: Time instances of cell power level and parameter changes

	Parameter	Unit	Cell 1	Cell 24	Remark
T0	Cell-specific RS EPRE	dBm/15kHz	-120	–	Srxlev_{Cell 1}< 0
	Qrxlevmin	dBm	-110	–
	Srxlev*	dB	N/A	–
	RF Signal Level	dBm	–	-80
	RXLEV_ACCESS_MIN	dBm	–	-101
	C1*	dB	–	21
T1	Cell-specific RS EPRE	dBm/15kHz	-70	–
	Srxlev*	dB	30	–	Srxlev_{Cell 1} >THRESH_E-UTRAN_high
	RF Signal Level	dBm	–	-80
	RXLEV_ACCESS_MIN	dBm	–	21
	C1*	dB	–	Barred
Note: Srxlev is calculated in the UE

Table 6.2.2.7.3.2-3: Main behaviour

St	Procedure	Message Sequence		TP	Verdict
		U – S	Message
1	SS adjusts cells according to row T1 of table 6.2.2.7.3.2-1 and SI2 IE cellBarred according to row "T1" in table 6.2.2.7.3.2-1.	–	–	–	–
2	Check: Does the test result of generic test procedure in TS 36.508 Table 6.4.2.7A-2 indicate that the UE is camped on E-UTRAN Cell 1?	–	–	1	–

6.2.2.7.3.3 Specific message contents

Table 6.2.2.7.3.3-1: RACH Control Parameters of SI2, SI3 and SI4 for Cell 24(step 1, Table 6.2.2.7.3.2-3)

Derivation Path: 51.010-1 clause 40.2.1.1
Information Element	Value/remark	Comment	Condition
RACH Control Parameters{
Cell Barred for Access	Barred
}

Table 6.2.2.7.3.3-2: SI 13 Rest Octets of , SI13 for Cell 24(step 1, Table 6.2.2.7.3.2-3)

Derivation Path: 51.010-1 clause 40.2.1.1
Information Element	Value/remark	Comment	Condition
BCCH_CHANGE_MARK {	001
SI_CHANGE_FIELD	0000
}

6.2.2.8 Inter-RAT Cell selection / From UTRA_Idle to E-UTRA RRC_IDLE / Serving cell becomes non-suitable

6.2.2.8.1 Test Purpose (TP)

(1)

with { UE in UTRA RRC_IDLE state }

ensure that {

when { the serving cell becomes non-suitable and there is a suitable E-UTRA neighbour cell }

then { UE selects the suitable E-UTRA neighbour cell }

(2)

with { UE in UTRA RRC_IDLE state }

ensure that {

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

then { UE selects the suitable E-UTRA neighbour cell }

}

Note: (SServingCell<0 or barred) conidtion is for rel 8; (Srxlev<0 or Squal<0 or barred) condition is for rel 9.

6.2.2.8.2 Conformance requirements

References: The conformance requirements covered in the current TC are specified in: TS 25.304, clause 5.2.1, 4.3, 5.2.1.4, 5.2.3.2. TS 36.304, clause 4.1, 4.3,5.2.1 and 5.2.3.2.

[TS 25.304, 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 25.304, clause 4.3]

suitable cell:

A "suitable cell" is a cell on which the UE may camp on to obtain normal service. Such a cell shall fulfil all the following requirements.

– The cell shall be part of either:

the selected PLMN, or:
the registered PLMN, or:
a PLMN of the Equivalent PLMN list

according to the latest information provided by the NAS.

– The cell is not barred, see subclause 5.3.1.1;

– The cell is part of at least one LA that is not part of the list of "forbidden LAs for roaming" [9], which belongs to a PLMN that fulfils the first bullet above;

– The cell selection criteria are fulfilled, see subclause 5.2.3.1.2.

– For a CSG cell the CSG ID is part of the CSG whitelist of the UE.

If the IE “Multiple PLMN List” [4] is broadcast in the cell, the cell is considered to be part of all LAs with LAIs constructed from the PLMN identities in the “Multiple PLMN List” and the LAC broadcast in the cell.

barred cell:

A cell is barred if it is so indicated in the system information [4].

[TS 25.304, clause 5.2.5.1]

When camped normally, the UE shall perform the following tasks:

– execute the cell reselection evaluation process on the following occasions/triggers:

1) UE internal triggers, so as to meet performance as specified in [10] and [11];

2) When information on the BCCH used for the cell reselection evaluation procedure has been modified

[TS 36.304, clause 4.1]

[TS 36.304, clause 4.3]

suitable cell:

A "suitable cell" is a cell on which the UE may camp on to obtain normal service. Such a cell shall fulfil all the following requirements.

The cell is part of either:
the selected PLMN, or:
the registered PLMN, or:
a PLMN of the Equivalent PLMN list

according to the latest information provided by NAS:

– The cell is not barred, see subclause 5.3.1;

– The cell is part of at least one TA that is not part of the list of "forbidden tracking areas for roaming" [4], which belongs to a PLMN that fulfils the first bullet above;

– The cell selection criteria are fulfilled, see subclause 5.2.3.2;

– For a CSG cell, the CSG ID is part of the allowed CSG list of the UE.

If more than one PLMN identity is broadcast in the cell, the cell is considered to be part of all TAs with TAIs constructed from the PLMN identities and the TAC broadcast in the cell.

[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 25.304, clause 5.2.3.2]

The cell selection criterion S is fulfilled when:

Where:

Squal	Cell Selection quality value (dB) Applicable only for FDD cells.
Srxlev	Cell Selection RX level value (dB)
Q_qualmeas	Measured cell quality value. The quality of the received signal expressed in CPICH Ec/N0 (dB) for FDD cells. CPICH Ec/N0 shall be averaged as specified in [10]. Applicable only for FDD cells.
Q_rxlevmeas	Measured cell RX level value. This is received signal, CPICH RSCP for FDD cells (dBm) and P-CCPCH RSCP for TDD cells (dBm).
Qqualmin	Minimum required quality level in the cell (dB). Applicable only for FDD cells.
Qrxlevmin	Minimum required RX level in the cell (dBm)
Pcompensation	max(UE_TXPWR_MAX_RACH – P_MAX, 0) (dB)
UE_TXPWR_MAX_RACH	Maximum TX power level an UE may use when accessing the cell on RACH (read in system information) (dBm)
P_MAX	Maximum RF output power of the UE (dBm)

6.2.2.8.3 Test description

6.2.2.8.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 5

– System information combination 4 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 according to section 4.5A.3A of TS 16.508 [18] on Cell 5 (serving cell).

6.2.2.8.3.2 Test procedure sequence

Tables 6.2.2.8.3.2-1 & 6.2.2.8.3.2-2 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Subsequent configurations marked "T1", "T2" and " T3" are applied at the points indicated in the Main behaviour description in Table 6.2.2.8.3.2-3.

Table 6.2.2.8.3.2-1: Time instances of cell power level and parameter changes for E-UTRA cell

	Parameter	Unit	Cell 1	Remark
T1	Cell-specific RS EPRE	dBm/15kHz	-70	Cell 1 becomes the strongest cell or the suitable cell
T1	Srxlev*	dB	36	Srxlev_{Cell 1} > 0
T2	Cell-specific RS EPRE	dBm/15kHz	“Off”	Power level “Off” is defined in TS 36.508 Table 6.2.2.1-1.
T3	Cell-specific RS EPRE	dBm/15kHz	-85
T3	Srxlev*	dB	21
Note: Srxlev is calculated in the UE

Table 6.2.2.8.3.2-2: Time instances of cell power level and parameter changes for UTRA cell

	Parameter	Unit	Cell 5	Remark
T1	CPICH_Ec	dBm/3.84 MHz	-90	Srxlev_{Cell 5} < 0,for FDD
	P-CCPCH	dBm/1.28 MHz	-92	Srxlev_{Cell 5} < 0,for TDD
	Srxlev*	dB	-11
T2	CPICH_Ec	dBm/3.84 MHz	-60
	P-CCPCH	dBm/1.28 MHz	-62
	Srxlev*	dB	19
T3	CPICH_Ec	dBm/3.84 MHz	-50
	P-CCPCH	dBm/1.28 MHz	-52
	Srxlev*	dB	29	Srxlev_{Cell 5} > Srxlev_{Cell 1} > 0 Serving cell becomes barred
Note : Srxlev is calculated in the UE

Table 6.2.2.8.3.2-3: 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 6.2.2.8.3.2-1 & Cell 5 power level is set according to row "T1" in table 6.2.2.8.3.2-2.	–	–	–	–
–	EXCEPTION : Step 2a1 to 2b1 describe behaviour that depends on whether a UE that has a PDP context activated on UTRAN
2 a1	If PDP context is not active: Check: Does the test result of generic test procedure in TS 36.508 Table 6.4.2.7A-2 is performed and the UE is camped on E-UTRAN Cell 1?	–	–	1	–
2b1	If PDP context is active: Check: Does the test result of generic test procedure in TS 36.508 Table 6.4.2.7A-1 is performed and the UE is camped on E-UTRAN Cell 1?
2A	Wait for [5] s for UE to receive system information.	–	–	–	–
3	SS re-adjusts the cell-specific reference signal level of Cell 1 according to row "T2" in table 6.2.2.8.3.2-1 & Cell 5 power level is set according to row "T2" in table 6.2.2.8.3.2-2.	–	–	–	–
4	Generic test procedure in TS 36.508 subclause 6.4.2.8 indicate that the UE is camped on UTRAN Cell 5. NOTE: The UE performs a RAU procedure and the RRC connection is released.	–	–	–	–
5	SS changes Cell 1 power level according to row "T3" in table 6.2.2.8.3.2-1 and modifies System Information so that Cell 5 becomes barred according to row "T3" in table 6.2.2.8.3.2-2. The SS transmits a PAGING TYPE 1 message including "BCCH Modification Information”.	<–	PAGING TYPE 1	–	–
6	Check: Does the test result of generic test procedure in TS 36.508 Table 6.4.2.7A-1 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	–

6.2.2.8.3.3 Specific message contents

Table 6.2.2.8.3.3-2: PAGING TYPE 1 for Cell 5 (step 5, Table 6.2.2.8.3.2-3)

Derivation path: 34.108 clause 9.1.1
Information Element	Value/Remark	Comment	Condition
PagingType1 ::= SEQUENCE {
pagingRecordList	Not present
bcch-ModificationInfo ::= SEQUENCE {
mib-ValueTag	Set to (Current MIB value tag + 1)
bcch-ModificationTime	Not present
}
laterNonCriticalExtensions SEQUENCE {}	Not present
}

Table 6.2.2.8.3.3-3: SystemInformationBlockType3 for Cell 5 (step 5, Table 6.2.2.8.3.2-3)

Derivation Path: 34.108 clause 4.4.3.2
Information Element	Value/remark	Comment	Condition
– Cell Access Restriction
– Cell barred	barred
– Intra-frequency cell re-selection indicator	notAllowed
– Tbarred	s1280