A.5.1 FDD/FDD Soft Handover
25.1333GPPRelease 17Requirements for support of radio resource management (FDD)TS
A.5.1.1 Test Purpose and Environment
The purpose of this test is to verify the requirement for the soft handover delay in CELL_DCH state specified in section 5.1.2.
The test parameters are given in Table A.5A and A.5B below. In the measurement control information it is indicated to the UE that event-triggered reporting with Event 1A shall be used, and that CPICH Ec/Io and SFN-CFN observed time difference shall be reported together with Event 1A. The test consists of six successive time periods, with a time duration of T1, T2, T3, T4, T5 and T6 respectively. At the start of time duration T1, the UE may not have any timing information of cell 2.
Table A.5A: General test parameters for Soft handover
|
Parameter |
Unit |
Value |
Comment |
|
|
DCH parameters |
DL Reference Measurement Channel 12.2 kbps |
As specified in TS 25.101 section A.3.1 |
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|
Power Control |
On |
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|
Target quality value on DTCH |
BLER |
0.01 |
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|
Initial conditions |
Active cell |
Cell 1 |
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|
Neighbouring cell |
Cell 2 |
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|
Final condition |
Active cell |
Cell 2 |
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|
Reporting range |
dB |
3 |
Applicable for event 1A and 1B |
|
|
Hysteresis |
dB |
0 |
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|
W |
1 |
Applicable for event 1A and 1B |
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|
Reporting deactivation threshold |
0 |
Applicable for event 1A |
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|
Time to Trigger |
ms |
0 |
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|
Filter coefficient |
0 |
|||
|
T1 |
s |
5 |
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|
T2 |
s |
3 |
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|
T3 |
s |
0.5 |
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|
T4 |
ms |
60 |
This is the requirement on active set update delay, see section 5.1.2.2, where KC=1 and OC=0. |
|
|
T5 |
ms |
20 |
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|
T6 |
s |
2 |
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Table A.5B: Cell specific test parameters for Soft handover
|
Parameter |
Unit |
Cell 1 |
Cell 2 |
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|
T1 |
T2 |
T3 |
T4 |
T5 |
T6 |
T1 |
T2 |
T3 |
T4 |
T5 |
T6 |
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|
CPICH_Ec/Ior |
dB |
-10 |
-10 |
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|
PCCPCH_Ec/Ior |
dB |
-12 |
-12 |
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|
SCH_Ec/Ior |
dB |
-12 |
-12 |
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|
PICH_Ec/Ior |
dB |
-15 |
-15 |
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|
DPCH_Ec/Ior |
dB |
Note1 |
Note1 |
Note1 |
N/A |
N/A |
N/A |
N/A |
Note3 |
Note1 |
Note1 |
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|
OCNS |
Note2 |
Note2 |
Note2 |
-0.94 |
-0.94 |
-0.94 |
-0.94 |
Note2 |
Note2 |
Note2 |
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|
|
dB |
0 |
2.91 |
2.91 |
2.91 |
2.91 |
-Inf |
2.91 |
2.91 |
2.91 |
2.91 |
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|
|
dBm/ 3,84 MHz |
-70 |
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|
CPICH_Ec/Io |
dB |
-13 |
-14 |
-14 |
-14 |
-14 |
-Inf |
-14 |
-14 |
-14 |
-14 |
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|
Propagation Condition |
AWGN |
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|
Relative delay of paths received from cell 2 with respect to cell 1 |
chips |
{-148 … 148} Note 4 |
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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 NOTE 3: The DPCH level is controlled by the power control loop. The initial power shall be set equal to the DPCH_Ec/Ior of Cell 1 at the end of T2. NOTE 4: The relative delay of the path from cell 2 with respect to cell 1 shall always be within ±148 chip. |
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A.5.1.1.1 Test procedure
1) The test is started at the beginning of T1.
2) During time period T2 an Event 1A triggered measurement report shall be sent by the UE containing the CFN-SFN observed time difference between cell 1 and cell 2.
3) At the beginning of T3 the downlink DPCH of cell 2 shall be activated.
4) UTRAN shall send a Active Set Update command with activation time now adding cell 2 to the active set. The Active Set Update message shall be sent to the UE so that the whole message is available at the UE at the beginning of T4.
5) At the beginning of T5 the DPCH from cell 1 shall be switched off.
A.5.1.2 Test Requirements
The measured quality on the DTCH of the UE downlink during T6 shall be BLER=0.01±30%.