17.4.4 Handover to intra-frequency cell to continue MBMS service reception

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

17.4.4.1 Test Purpose (TP)

(1)

with { UE in E-UTRA RRC_Connected state AND is receiving MBMS service }

ensure that {

when { UE receives RRCConnectionReconfiguration message including a mobilityControlInfo for intra frequency neighbour cell providing MBMS service }

then { UE performs intra frequency handover and continues to receive MBMS service }

}

17.4.4.2 Conformance requirements

References: The conformance requirements covered in the present TC are specified in: TS 36.306 clause 4.3.5.2. Unless otherwise stated these are Rel-11 requirements.

[TS 36.306 clause 4.3.5.2]

This field defines the carrier aggregation, MIMO and MBMS reception capabilities supported by the UE for configurations with inter-band, intra-band non-contiguous, intra-band contiguous carrier aggregation and without carrier aggregation. For each band in a band combination the UE provides the supported CA bandwidth classes and the corresponding MIMO capabilities for downlink. The UE also has to provide the supported uplink CA bandwidth class and the corresponding MIMO capability for at least one band in the band combination. A MIMO capability applies to all carriers of a bandwidth class of a band in a band combination.

In all non-CA band combinations the UE shall indicate a bandwidth class supporting the maximum channel bandwidth defined for the band.

In all non-CA band combinations the UE shall indicate at least the number of layers for spatial multiplexing according to the UE’s Rel-8/9 category (Cat. 1-5). If the UE provides a Rel-10 category (Cat. 6-8) it shall indicate at least the number of layers according to that category for at least one band combination. In all other band combinations a UE indicating a category between 2 and 8 shall indicate support for at least 2 layers for downlink spatial multiplexing for all bands. The indicated number of layers for spatial multiplexing may exceed the number of layers required according to the category indicated by the UE. The carrier aggregation and MIMO capabilities indicated for at least one band combination shall meet the processing requirements defined by the physical layer parameter values in the UE category (i.e., maximum number of DL-SCH/UL-SCH transport block bits received/transmitted within a TTI, maximum number of bits of a DL-SCH/UL-SCH transport block received/transmitted within a TTI, and total number of soft channel bits for downlink).

The UE supporting MBMS procedures shall support MBMS reception on any serving cell and on any cell that may be additionally configured as serving cell according to this field.

17.4.4.3 Test description

17.4.4.3.1 Pre-test conditions

System Simulator:

– Cell 1 and Cell 2 are on the same E-UTRA frequency and belongs to same MBSFN area.

  • MBSFNAreaConfiguration message as defined in TS 36.508 [18] Table 4.6.1-4A is transmitted on Cell 1 and Cell 2.

– System information combination 15 as defined in TS 36.508[18] clause 4.4.3.1 is used in E-UTRA Cell 1 and Cell 2.

UE:

– The UE is configured to receive MBMS services.

Preamble:

– UE is in state Loopback Activated (State 4) with UE TEST LOOP MODE C on Cell 1 according to [18].

– The UE is made interested in receiving a MBMS service with MBMS Service ID=0 associated with the MBMS SAI (1) broadcasted in SIB15 mbms-SAI-IntraFreq list on Cell 1 and Cell 2.

– The UE is made aware that the MBMS service is active.

17.4.4.3.2 Test procedure sequence

Table 17.4.4.3.2-1 illustrates the downlink power levels and other changing parameters to be applied for the cells at various time instants of the test execution. Row marked "T0" denotes the initial conditions after preamble, while columns marked "T0", and "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 17.4.4.3.2-1: Time instances of cell power level and parameter changes

Parameter

Unit

Cell 1

Cell 2

Remark

T0

Cell-specific RS EPRE

dBm/15kHz

-85

-91

The power level values are such that measurement results for Cell 1 (M1) and Cell 2 (M2) satisfy exit condition for event A3 (M2 < M1).

T1

Cell-specific RS EPRE

dBm/15kHz

-85

-79

The power level values are such that measurement results for Cell 1 (M1) and Cell 2 (M2) satisfy entry condition for event A3 (M2 > M1).

Table 17.4.4.3.2-2: Main behaviour

St

Procedure

Message Sequence

TP

Verdict

U – S

Message

1

The SS transmits a Paging message including a systemInfoModification for Cell1 and Cell 2.

<–

Paging

1A

From the beginning of the next modification period the SS starts broadcast of SystemInformationBlockType15 according to System information combination 19 as defined in TS 36.508[18] clause 4.4.3.1 on Cell 1 and Cell 2..

<–

SystemInformationBlockType15

1B

The UE transmits MBMSInterestIndication message.

–>

MBMSInterestIndication

Exception; Step 2 is repeated 5 times

2

The SS transmits 2 MBMS Packets on the MTCH in the next MCH Scheduling Period, with MCH Scheduling Information MAC Control Element with LCID=’00001’, Stop MTCH= ‘00000000001’ in the first MAC PDU of the MCH Scheduling Period.

<–

MBMS Packets

3

Void

4

The SS transmits an UE TEST LOOP MODE C MBMS PACKET COUNTER REQUEST message.

<–

UE TEST LOOP MODE C MBMS PACKET COUNTER REQUEST

5

UE responds with UE TEST LOOP MODE C MBMS PACKET COUNTER RESPONSE.

–>

UE TEST LOOP MODE C MBMS PACKET COUNTER RESPONSE

6

Check: Is the number of reported MBMS Packets received on the MTCH in step5 greater than zero? (NOTE 1)

1

P

7

The SS transmits an RRCConnectionReconfiguration message to setup intra frequency measurement on Cell 1.

<–

RRCConnectionReconfiguration

8

The UE transmits an RRCConnectionReconfigurationComplete message on Cell 1 to confirm the setup of intra frequency measurement.

–>

RRCConnectionReconfigurationComplete

9

The SS changes Cell 1 and Cell 2 level according to the row "T1" in table 17.4.3.3.2-1.

10

The UE transmits a MeasurementReport message to report event A3 on Cell 1 with the measured RSRP, RSRQ value for Cell 2.

–>

MeasurementReport

11

The SS transmits an RRCConnectionReconfiguration message on Cell 1 to order the UE to perform intra-frequency handover to Cell 2.

<–

RRCConnectionReconfiguration

12

The UE transmits an RRCConnectionReconfigurationComplete message on Cell 2?

–>

RRCConnectionReconfigurationComplete

Exception; Step 13 is repeated 5 times

13

The SS transmits 2 MBMS Packets on the MTCH in the next MCH Scheduling Period, with MCH Scheduling Information MAC Control Element with LCID=’00001’, Stop MTCH= ‘00000000001’ in the first MAC PDU of the MCH Scheduling Period.

<–

MBMS Packets

14

Void

15

The SS transmits an UE TEST LOOP MODE C MBMS PACKET COUNTER REQUEST message.

<–

UE TEST LOOP MODE C MBMS PACKET COUNTER REQUEST

16

UE responds with UE TEST LOOP MODE C MBMS PACKET COUNTER RESPONSE.

–>

UE TEST LOOP MODE C MBMS PACKET COUNTER RESPONSE

17

Check: Is the number of reported MBMS Packets received on the MTCH in step16 greater than the number of MBMS Packets reported in step5? (NOTE 2)

1

P

NOTE 1: This verifies that UE is receiving active MBMS reception on Cell 1 before Intra-frequency handover to Cell 2.

NOTE 2: This verifies that UE has performed intra-frequency handover to Cell 2 providing the MBMS service and continue MBMS reception.

17.4.4.3.3 Specific message contents

Table 17.4.4.3.3-1: SystemInformationBlockType2 for Cells 1 and 2 (Preamble and all steps, Table 17.4.4.3.2-2)

Derivation Path: 36.508 table 4.4.3.3-1, condition MBMS.

Table 17.4.4.3.3-1A: SystemInformationBlockType3 for Cells 1 and 2 (Preamble and all steps)

Derivation Path: 36.508, Table 4.4.3.3-2

Information Element

Value/remark

Comment

Condition

SystemInformationBlockType3 ::= SEQUENCE {

intraFreqCellReselectionInfo SEQUENCE {

neighCellConfig

’10’B

The MBSFN subframe allocations of all neighbour cells are identical to or subsets of that in the serving cell on this frequency, if configured, and of that in the PCell otherwise

}

}

Table 17.4.4.3.3-2: SystemInformationBlockType15 for Cells 1 and 2 (step 1A and all subsequent steps, Table 17.4.4.3.2-2)

Derivation Path: 36.508 table 4.4.3.3-14, condition MBMS_intraFreq.

Table 17.4.4.3.3-3: RRCConnectionReconfiguration (step 7, Table 17.4.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-8, condition MEAS

Table 17.4.4.3.3-4: MeasConfig (Table 17.4.4.3.3-3)

Derivation Path: 36.508, Table 4.6.6-1

Information Element

Value/remark

Comment

Condition

MeasConfig SEQUENCE {

measObjectToAddModList SEQUENCE (SIZE (1..maxObjectId)) OF SEQUENCE {

1 entry

measObjectId[1]

IdMeasObject-f1

measObject[1]

MeasObjectEUTRA-GENERIC(f1)

measObject[1]

MeasObjectEUTRA-GENERIC(maxEARFCN)

Band > 64

}

reportConfigToAddModList SEQUENCE (SIZE (1..maxReportConfigId)) OF SEQUENCE {

1 entry

reportConfigId[1]

IdReportConfig-A3

reportConfig[1]

ReportConfigEUTRA-A3

}

measIdToAddModList SEQUENCE (SIZE (1..maxMeasId)) OF SEQUENCE {

1 entry

measId[1]

1

measObjectId[1]

IdMeasObject-f1

reportConfigId[1]

IdReportConfig-A3

}

measObjectToAddModList-v9e0 ::= SEQUENCE (SIZE (1..maxObjectId)) OF SEQUENCE {

1 entry

Band > 64

carrierFreq-v9e0[1]

Same downlink EARFCN as used for f1

}

}

Condition

Explanation

Band > 64

If band > 64 is selected

Table 17.4.4.3.3-4A: MeasObjectEUTRA-GENERIC(f1) (Table 17.4.4.3.3-4)

Derivation Path: 36.508, Table 4.6.6-2

Information Element

Value/remark

Comment

Condition

MeasObjectEUTRA-GENERIC(Freq) ::= SEQUENCE {

neighbourCellConfig

’10’B

The MBSFN subframe allocations of all neighbour cells are identical to or subsets of that in the serving cell on this frequency, if configured, and of that in the PCell otherwise

}

Table 17.4.4.3.3-5: MeasurementReport (step 10, Table 17.4.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-5

Information Element

Value/remark

Comment

Condition

MeasurementReport ::= SEQUENCE {

criticalExtensions CHOICE {

c1 CHOICE{

measurementReport-r8 SEQUENCE {

measResults SEQUENCE {

measId

1

measResultPCell SEQUENCE {

rsrpResult

(0..97)

rsrqResult

(0..34)

}

measResultNeighCells CHOICE {

measResultListEUTRA SEQUENCE (SIZE (1..maxCellReport)) OF SEQUENCE {

1 entry

physCellId[1]

PhysicalCellIdentity of Cell 2

cgi-Info[1]

Not present

measResult[1] SEQUENCE {

rsrpResult

(0..97)

rsrqResult

(0..34)

}

}

}

}

}

}

}

}

Table 17.4.4.3.3-6: RRCConnectionReconfiguration (step 12, Table 17.4.4.3.2-2)

Derivation Path: 36.508, Table 4.6.1-8, condition HO

Table 17.4.4.3.3-7: MobilityControlInfo (Table 17.4.4.3.3-6)

Derivation Path: 36.508, Table 4.6.5-1

Information Element

Value/remark

Comment

Condition

MobilityControlInfo ::= SEQUENCE {

targetPhysCellId

PhysicalCellIdentity of Cell 2

carrierFreq

Not present

}