9.3.3 Closed Loop Diversity Performance
25.1013GPPRelease 17TSUser Equipment (UE) radio transmission and reception (FDD)
9.3.3.1 AWGN propagation conditions
The reporting accuracy of channel quality indicator (CQI) under AWGN environments is determined by the reporting variance and the BLER performance using the transport format indicated by the reported CQI median.
9.3.3.1.1 Minimum Requirement – UE HS-DSCH categories 1-20
For the parameters specified in Table 9.41, and using the downlink physical channels specified in table C.10, the reported CQI value shall be in the range of +/-2 of the reported median more than 90% of the time. If the HS-PDSCH (BLER) using the transport format indicated by median CQI is less than or equal to 0.1, the BLER using the transport format indicated by the (median CQI +2) shall be greater than 0.1. If the HS-PDSCH (BLER) using transport format indicated by the median CQI is greater than 0.1, the BLER using the transport format indicated by (median CQI -1) shall be less than or equal to 0.1.
Table 9.41: Test Parameters for CQI in AWGN – closed loop diversity
|
Parameter |
Unit |
Test 1 |
Test 2 |
Test 3 |
|||||
|
|
dB |
0 |
5 |
10 |
|||||
|
|
dBm/3.84 MHz |
-60 |
|||||||
|
Phase reference |
– |
P-CPICH |
|||||||
|
HS-PDSCH |
dB |
-3 |
|||||||
|
HS-SCCH _1 |
dB |
-10 |
|||||||
|
DPCH |
dB |
-10 |
|||||||
|
Maximum number of H-ARQ transmission |
– |
1 |
|||||||
|
Number of HS-SCCH set to be monitored |
– |
1 |
|||||||
|
CQI feedback cycle |
ms |
2 |
|||||||
|
CQI repetition factor |
– |
1 |
|||||||
|
Feedback Error Rate |
% |
0 |
|||||||
|
Closed loop timing adjustment mode |
1 |
||||||||
|
HS-SCCH-1 signalling pattern |
– |
To incorporate inter-TTI=3 the six sub-frame HS-SCCH-1 signalling pattern shall be “…XOOXOO…”, where “X” indicates TTI in which the HS-SCCH-1 uses the identity of the UE under test, and “O” indicates TTI in which the HS-SCCH-1 uses a different UE identity. |
|||||||
|
Note 1: Measurement power offset “Γ” is configured by RRC accordingly and as defined in [7]. Note 2: TF for HS-PDSCH is configured according to the reported CQI statistics. TF based on median CQI, median CQI -1, median CQI+2 are used. Other physical channel parameters are configured according to the CQI mapping table described in TS25.214. Note 3: HS-PDSCH Ec/Ior is decreased according to reference power adjustment Δ described in TS 25.214. Note 4: For any given transport format the power of the HS-SCCH and HS-PDSCH shall be transmitted continuously with constant power. Note 5: The UE shall be configured in non.64QAM/non-MIMO mode and use appropriate CQI tables according to TS 25.214. |
|||||||||
9.3.3.2 Fading propagation conditions
The reporting accuracy of the channel quality indicator (CQI) under fading environments is determined by the BLER performance using the transport format indicated by the reported CQI median.
The specified requirements may be subject to further simulations to verify assumptions.
9.3.3.2.1 Minimum Requirement – UE HS-DSCH categories 1-20
For the parameters specified in Table 9.44, and using the downlink physical channels specified in table C.10, the requirements are specified in terms of maximum BLERs at particular reported CQIs when transmitting a fixed transport format given by the CQI median as shown in Table 9.45. The BLER at a particular reported CQI is obtained by associating a particular CQI reference measurement period with the HS-PDSCH subframe overlapping with the end of this CQI reference measurement period and calculating the fraction of erroneous HS-PDSCH subframes.
Table 9.44: Test Parameters for CQI test in fading- closed loop diversity
|
Parameter |
Unit |
Test 1 |
Test 2 |
||||
|
HS-PDSCH |
dB |
-8 |
-4 |
||||
|
|
dB |
0 |
5 |
||||
|
|
dBm/3.84 MHz |
-60 |
|||||
|
Phase reference |
– |
P-CPICH |
|||||
|
HS-SCCH_1 |
dB |
-8.5 |
|||||
|
DPCH |
dB |
-6 |
|||||
|
Maximum number of H-ARQ transmission |
– |
1 |
|||||
|
Number of HS-SCCH set to be monitored |
– |
1 |
|||||
|
CQI feedback cycle |
ms |
2 |
|||||
|
CQI repetition factor |
– |
1 |
|||||
|
Feedback Error Rate |
% |
0 |
|||||
|
Closed loop timing adjustment mode |
1 |
||||||
|
HS-SCCH-1 signalling pattern |
– |
To incorporate inter-TTI=3 the six sub-frame HS-SCCH-1 signalling pattern shall be “…XOOXOO…”, where “X” indicates TTI in which the HS-SCCH-1 uses the identity of the UE under test, and “O” indicates TTI in which the HS-SCCH-1 uses a different UE identity. |
|||||
|
Propagation Channel |
Case 8 |
||||||
|
Note 1: Measurement power offset “Γ” is configured by RRC accordingly and as defined in [7]. Note 2: TF for HS-PDSCH is configured according to the reported CQI statistics. TF based on median CQI is used. Other physical channel parameters are configured according to the CQI mapping table described in TS25.214. Note 3: HS-PDSCH Ec/Ior is decreased according to reference power adjustment Δ described in TS 25.214. Note 4: For any given transport format the power of the HS-SCCH and HS-PDSCH shall be transmitted continuously with constant power. Note 5: The UE shall be configured in non-64QAM/non-MIMO mode and use appropriate CQI tables according to TS 25.214. |
|||||||
Table 9.45: Minimum requirement for CQI test in fading – closed loop diversity
|
Reported CQI |
Maximum BLER |
||||
|
Test 1 |
Test2 |
||||
|
CQI median |
60% |
60% |
|||
|
CQI median + 3 |
15% |
15% |
|||
9.3.3.3 Periodically varying radio conditions.
The reporting accuracy of the channel quality indicator (CQI) when subject to AWGN propagation conditions with periodically varying 
, is determined by the reporting variance as measured during selected parts of a predetermined 
pattern, as depicted in Figure 9.1.
9.3.3.3.1 Minimum Requirement – UE HS-DSCH categories 1-20
For the parameters specified in Table 9.45A, and using the downlink physical channels specified in table C.10, let M1 be defined as the median CQI that the UE reports in static propagation conditions, with Ior/Ioc set to α1, and M2 be the median CQI that the UE reports in static propagation conditions, with 
set to α2. The minimum difference between M1 and M2 is required to be larger than 6.
For the parameters specified in Table 9.45A, and using the downlink physical channels specified in table C.10, 90% of the reported CQI values, during Tmeasure as depicted in Figure 9.1, shall be in the range of +/-3 of M1, for the cases when Tmeasure occurs during time-periods where 
is set to α1, and in the range of +/-3 of M2, for the cases when Tmeasure occurs during time-periods where 
is set to α2 .
The measurement equipment is allowed to start the ramping of 
13 slots before the start of the HS-DPCCH slot that contains the first CQI report in Tmeasure.
The measurement equipment shall have settled 
to its nominal value 10 slots before the start of the HS-DPCCH slot that contains the first CQI report in Tmeasure.
An illustration of these timing relations is provided in Figure 9.2.
Table 9.45A: Test Parameter for CQI test in periodically varying radio conditions – closed loop diversity
|
Parameter |
Unit |
Test 1 |
|||
|
α1 |
dB |
10 |
|||
|
α2 |
dB |
0 |
|||
|
Ioc1 |
dBm/3.84 MHz |
-60 |
|||
|
Ioc2 |
dBm/3.84 MHz |
-50 |
|||
|
Phase reference |
– |
P-CPICH |
|||
|
Tmeasure |
TTI |
8 |
|||
|
Tdelay |
TTI |
3 |
|||
|
Tsettle |
TTI |
1 |
|||
|
Tpulse |
TTI |
12 |
|||
|
HS-PDSCH |
dB |
-2 |
|||
|
HS-SCCH_1 |
dB |
-10 |
|||
|
DPCH |
dB |
-10 |
|||
|
Maximum number of H-ARQ transmission |
– |
1 |
|||
|
Number of HS-SCCH set to be monitored |
– |
1 |
|||
|
CQI feedback cycle |
ms |
2 |
|||
|
CQI repetition factor |
– |
1 |
|||
|
HS-SCCH-1 signalling pattern |
– |
To incorporate inter-TTI=3 the six sub-frame HS-SCCH-1 signalling pattern shall be “…XOOXOO…”, where “X” indicates TTI in which the HS-SCCH-1 uses the identity of the UE under test, and “O” indicates TTI in which the HS-SCCH-1 uses a different UE identity. |
|||
|
Note 1: Measurement power offset “Γ” is configured by RRC accordingly and as defined in [7]. Note 2: The UE shall be configured in non-64QAM/non-MIMO mode and use appropriate CQI tables according to TS 25.214. |
|||||
