A.5.3 TDD/GSM Handover

25.1233GPPRelease 17Requirements for support of radio resource management (TDD)TS

A.5.3.1 Test Purpose and Environment

A.5.3.1.1 3.84 Mcps TDD option

The purpose of this test is to verify the requirement for the UTRA TDD to GSM handover delay reported in section 5.4.2.1.

The test parameters are given in Tables A.5.3.1, A.5.3.2 and A.5.3.3 below. In the measurement control information it is indicated to the UE that event-triggered reporting with Event 3C shall be used. The test consists of three successive time periods, with a time duration of T1, T2 and T3 respectively. At the start of time duration T1, the UE may not have any timing information of cell 2.

UTRAN shall send a HANDOVER FROM UTRAN COMMAND message with activation time "now" with one active cell, cell 2. The HANDOVER FROM UTRAN COMMAND message shall be sent to the UE during period T2. The starting point of T3 is defined as the end of the last TTI containing the HO command. In the GSM Handover command contained in this message, IE starting time shall not be included.

Cell 1 is a UTRA TDD cell and cell 2 is a GSM cell. The Beacon timeslot shall be transmitted in timeslot 0 for cell 1 and no second Beacon timeslot shall be provided for cell 1. The DL DPCH shall be transmitted in timeslot 1 and the UL DPCH shall be transmitted in timeslot 3.

Table A.5.3.1: General test parameters for TDD/GSM handover

Parameter

Unit

Value

Comment

DCH parameters

DL Reference Measurement Channel 12.2 kbps

As specified in TS 25.102 section A.2.2

Power Control

On

Target quality value on DTCH

BLER

0.01

Initial conditions

Active cell

Cell 1

UTRA TDD cell

Neighbour cell

Cell 2

GSM cell

Final condition

Active cell

Cell 2

GSM cell

Inter-RAT measurement quantity

GSM carrier RSSI

BSIC verification required

Required

Threshold other system

dBm

-80

Absolute GSM carrier RSSI threshold for Event 3C.

Hysteresis

dB

0

Time to Trigger

ms

0

Filter coefficient

0

Monitored cell list size

12 TDD neighbours on Channel 1

6 GSM neighbours including ARFCN 1

Measurement control information is sent before the start of time period T1.

Tidentify abort

s

5

As specified in section 8.1.2.5

Treconfirm abort

s

5

As specified in section 8.1.2.5

T1

s

10

T2

s

10

T3

s

10

Table A.5.3.2: Cell 1 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 1

DL timeslot number

0

1

T1

T2

T3

T1

T2

T3

UTRA RF Channel Number

Channel 1

PCCPCH_Ec/Ior

dB

-3

n.a.

SCH_Ec/Ior

dB

-9

n.a.

SCH_toffset

dB

0

n.a.

DPCH_Ec/Ior

dB

n.a.

Note 1

n.a.

OCNS_Ec/Ior

dB

-3,12

Note 2

n.a.

dB

6

6

PCCPCH RSCP

dBm

-68

n.a.

dBm/3,84 MHz

-70

Propagation Condition

AWGN

Note 1: The DPCH level is controlled by the power control loop

Note 2: The power of the OCNS channel that is added shall make the total power from the cell to be equal to Ior .

Table A.5.3.3: Cell 2 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 2

T1

T2, T3

Absolute RF Channel Number

ARFCN 1

RXLEV

dBm

-85

-75

A.5.3.1.2 1.28Mcps TDD option

The purpose of this test is to verify the requirement for the UTRA TDD to GSM handover delay reported in section 5.3.2.

The test parameters are given in Tables A.5.3.4, A.5.3.5 and A.5.3.6 below. In the measurement control information it is indicated to the UE that event-triggered reporting with Event 3C shall be used. The test consists of three successive time periods, with a time duration of T1, T2 and T3 respectively. At the start of time duration T1, the UE may not have any timing information of cell 2.

UTRAN shall send a HANDOVER FROM UTRAN COMMAND message with activation time "now" with one active cell, cell 2. The HANDOVER FROM UTRAN COMMAND message shall be sent to the UE during period T2. The starting point of T3 is defined as the end of the last TTI containing the HO command. In the GSM Handover command contained in this message, the IE starting time shall not be included.

Cell 1 is a UTRA TDD cell and cell 2 is a GSM cell.

The DL DPCH shall be transmitted in timeslot 4 and the UL DPCH shall be transmitted in timeslot 2.

Table A.5.3.4: General test parameters for TDD/GSM handover

Parameter

Unit

Value

Comment

DCH parameters

DL Reference Measurement Channel 12.2 kbps

As specified in TS 25.102 section A

Power Control

On

Target quality value on DTCH

BLER

0.01

Initial conditions

Active cell

Cell 1

UTRA TDD cell

Neighbour cell

Cell 2

GSM cell

Final condition

Active cell

Cell 2

GSM cell

Inter-RAT measurement quantity

GSM carrier RSSI

BSIC verification required

Required

Threshold other system

dBm

-80

Absolute GSM carrier RSSI threshold for Event 3C.

Hysteresis

dB

0

Time to Trigger

ms

0

Filter coefficient

0

Monitored cell list size

12 TDD neighbours on Channel 1

6 GSM neighbours including ARFCN 1

Measurement control information is sent before the start of time period T1.

Tidentify abort

s

5

As specified in section 8.1A.2.5

Treconfirm abort

s

5

As specified in section 8.1A.2.5

T1

s

10

T2

s

10

T3

s

10

Table A.5.3.5: Cell 1 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 1

DL timeslot number

0

DwPTS

T1

T2

T3

T1

T2

T3

UTRA RF Channel Number (NOTE)

Channel 1

PCCPCH_Ec/Ior

dB

-3

DwPCH_Ec/Ior

dB

0

OCNS_Ec/Ior

dB

-3

dB

5

5

dBm/1.28 MHz

-70

Propagation Condition

AWGN

NOTE: In the case of multi-frequency network,the UTRA RF Channel Number can be set for the primary frequency in this test.

Table A.5.3.6: Cell 2 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 2

T1

T2, T3

Absolute RF Channel Number

ARFCN 1

RXLEV

dBm

-85

-75

A.5.3.1.3 7.68 Mcps TDD option

The purpose of this test is to verify the requirement for the UTRA TDD to GSM handover delay reported in section 5.4.2.1.

The test parameters are given in Tables A.5.3.7, A.5.3.8 and A.5.3.9 below. In the measurement control information it is indicated to the UE that event-triggered reporting with Event 3C shall be used. The test consists of three successive time periods, with a time duration of T1, T2 and T3 respectively. At the start of time duration T1, the UE may not have any timing information of cell 2.

UTRAN shall send a HANDOVER FROM UTRAN COMMAND message with activation time "now" with one active cell, cell 2. The HANDOVER FROM UTRAN COMMAND message shall be sent to the UE during period T2. The starting point of T3 is defined as the end of the last TTI containing the HO command. In the GSM Handover command contained in this message, IE starting time shall not be included.

Cell 1 is a UTRA TDD cell and cell 2 is a GSM cell. The Beacon timeslot shall be transmitted in timeslot 0 for cell 1 and no second Beacon timeslot shall be provided for cell 1. The DL DPCH shall be transmitted in timeslot 1 and the UL DPCH shall be transmitted in timeslot 3.

Table A.5.3.7: General test parameters for TDD/GSM handover

Parameter

Unit

Value

Comment

DCH parameters

DL Reference Measurement Channel 12.2 kbps

As specified in TS 25.102 section A.2.2

Power Control

On

Target quality value on DTCH

BLER

0.01

Initial conditions

Active cell

Cell 1

UTRA TDD cell

Neighbour cell

Cell 2

GSM cell

Final condition

Active cell

Cell 2

GSM cell

Inter-RAT measurement quantity

GSM carrier RSSI

BSIC verification required

Required

Threshold other system

dBm

-80

Absolute GSM carrier RSSI threshold for Event 3C.

Hysteresis

dB

0

Time to Trigger

ms

0

Filter coefficient

0

Monitored cell list size

12 TDD neighbours on Channel 1

6 GSM neighbours including ARFCN 1

Measurement control information is sent before the start of time period T1.

Tidentify abort

s

5

As specified in section 8.1.2.5

Treconfirm abort

s

5

As specified in section 8.1.2.5

T1

s

10

T2

s

10

T3

s

10

Table A.5.3.8: Cell 1 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 1

DL timeslot number

0

1

T1

T2

T3

T1

T2

T3

UTRA RF Channel Number

Channel 1

PCCPCH_Ec/Ior

dB

-3

n.a.

SCH_Ec/Ior

dB

-9

n.a.

SCH_toffset

dB

0

n.a.

DPCH_Ec/Ior

dB

n.a.

Note 1

n.a.

OCNS_Ec/Ior

dB

-3,12

Note 2

n.a.

dB

6

6

PCCPCH RSCP

dBm

-68

n.a.

dBm/7,68 MHz

-70

Propagation Condition

AWGN

Note 1: The DPCH level is controlled by the power control loop

Note 2: The power of the OCNS channel that is added shall make the total power from the cell to be equal to Ior .

Table A.5.3.9: Cell 2 specific test parameters for TDD/GSM handover

Parameter

Unit

Cell 2

T1

T2, T3

Absolute RF Channel Number

ARFCN 1

RXLEV

dBm

-85

-75

A.5.3.2 Test Requirements

A.5.3.2.1 3.84 Mcps TDD option

The UE shall begin to send access bursts on the new DCCH of the target cell less than 90 ms from the beginning of time period T3.

The rate of correct handovers observed during repeated tests shall be at least 90%.

A.5.3.2.2 1.28 Mcps TDD option

The UE shall begin to send access bursts on the new DCCH of the target cell less than 90 ms from the beginning of time period T3.

The rate of correct handovers observed during repeated tests shall be at least 90%.

A.5.3.2.3 7.68 Mcps TDD option

The UE shall begin to send access bursts on the new DCCH of the target cell less than 90 ms from the beginning of time period T3.

The rate of correct handovers observed during repeated tests shall be at least 90%.