A.5.8 Serving HS-DSCH cell change
25.1333GPPRelease 17Requirements for support of radio resource management (FDD)TS
A.5.8.1 Test Purpose and Environment
The purpose of this test is to verify the requirement for the delay when performing the serving HS-DSCH cell change in CELL_DCH state specified in section 5.10.
The test parameters are given in Table A.5.13 and A.5.14 below. The test consists of 4 successive time periods, with a time duration of T1, T2, T3 and T4 respectively. At the start of time duration T1 the UE have cell 1 and cell 2 in active set and cell 1 as the serving HS-DSCH cell.
Data shall be transmitted continuously to the UE on the HS-DSCH channel.
Table A.5.13: General test parameters for serving HS-DSCH cell change
|
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 |
0.001 |
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|
HSDPA parameters |
Fixed Reference Channel Definition H-Set 1, with QPSK modulation only |
As specified in TS 25.101 section A.7.1.1 |
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|
Initial conditions |
Active cells |
Cell 1 and Cell 2 |
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|
Serving HS-DSCH cell |
Cell 1 |
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Final condition |
Active cell |
Cell 1 and Cell 2 |
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|
Serving HS-DSCH cell |
Cell 2 |
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|
Hysteresis |
dB |
0 |
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|
Time to Trigger |
ms |
0 |
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|
Filter coefficient |
0 |
|||
|
CQI Feedback cycle, k |
ms |
2 |
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|
CQI repetition factor |
1 |
|||
|
T1 |
s |
5 |
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T2 |
s |
3 |
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T3 |
s |
0.5 |
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|
T4 |
ms |
100 |
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Table A.5.14: Cell specific test parameters for serving HS-DSCH cell change
|
Parameter |
Unit |
Cell 1 |
Cell 2 |
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|
T1 |
T2 |
T3 |
T4 |
T1 |
T2 |
T3 |
T4 |
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|
UTRA RF Channel Number |
Channel 1 |
Channel 1 |
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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 |
Note 1 |
Note 1 |
Note 1 |
N/A |
N/A |
N/A |
Note 3 |
Note 1 |
|
HS-PDSCH_Ec/Ior |
dB |
-10 |
-inf |
-inf |
-10 |
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|
HS-SCCH-1_ Ec/Ior |
dB |
-13 |
-inf |
-inf |
-13 |
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|
OCNS |
Note 2 |
Note 2 |
Note 2 |
Note 2 |
Note 2 |
Note 2 |
Note 2 |
Note 2 |
|
|
|
dB |
3.64 |
1.14 |
1.14 |
3.64 |
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|
|
dBm/ |
-70 |
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|
CPICH_Ec/Io |
dB |
-13 |
-15.5 |
-15.5 |
-13 |
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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.5.8.1.1 Test procedure
1) The test is started at the beginning of T1.
2) During time period T2 an Event 1D triggered measurement report shall be sent by the UE.
3) During time period T3 UTRAN shall send a Physical Channel Configuration command with activation time now changing serving HS-DSCH from cell 1 to cell 2. The Physical Channel Configuration message shall be sent to the UE so that the whole message is available at the UE at the beginning of T4.
A.5.8.2 Test Requirements
The UE shall start to transmit the CQI to cell 2 less than 74 ms from the beginning of time period T4.
The UE shall also start to receive the first HS-SCCH message from cell 2 less than 74 ms from the beginning of time period T4 and transmit the ACK or NAK which corresponds to the HS-SCCH message.
NOTE: The delay Dcell_change equals the RRC procedure delay defined in TS25.331 Section 13.5.2 plus the interruption time of receiving HS-DSCH data stated in section 5.10.2.2.
The RRC procedure delay is 50 ms and the interruption time is given by Tinterrupt1=TIU+22 ms=24 ms.
The total delay Dcell_change=50 + 24 ms = 74 ms.