8 Performance requirements
37.1053GPPActive Antenna System (AAS) Base Station (BS) transmission and receptionRelease 17TS
8.1 General
Performance requirements specify the ability of the AAS BS to correctly demodulate signals in various conditions and configurations.
The demodulation requirements for an AAS BS are the same as non-AAS BS demodulation requirements specified for:
– Single RAT UTRA operation in TS 25.104 [9] clause 8 for FDD operation, and in TS 25.105 [10] clause 8 for TDD operation,
– Single RAT E-UTRA operation in TS 36.104 [11], subclauses 8.2 – 8.4 and 8.6 – 8.7.
8.1.1 UTRA operation
Performance requirements for single RAT UTRA operation in FDD are specified for the measurement channels defined in 3GPP TS 25.104 [2] and 3GPP TS 25.105 [3]. The requirements only apply to those measurement channels that are supported by AAS BS. For FRC8 in 3GPP TS 25.104 [2] the non E-DPCCH boosting and E-DPCCH boosting requirement only apply for the option supported by the AAS BS. The performance requirements for the high speed train scenarios defined in 3GPP TS 25.104 [2] and 3GPP TS 25.105 [3] are optional.
Unless stated otherwise, performance requirements apply for a single cell only. Performance requirements for an AAS BS supporting UTRA FDD DC-HSUPA or DB-DC-HSUPA and UTRA TDD MC-HSUPA are defined in terms of single carrier requirements. For FDD operation the requirements in clause 8 shall be met with the transmitter unit(s) associated with the TAB connectors(s) in the operating band ON.
NOTE: In normal operating conditions the TAB connectors(s) in UTRA FDD operation are configured to transmit and receive at the same time. The transmitter unit(s) associated with the TAB connectors may be OFF for some of the tests as specified in TS 37.145-1 [29] and TS 37.145-2 [30].
In the referred UTRA specifications and in this clause, the term BS with RX diversity refers to performance requirements for two demodulation branches, and BS without RX diversity refers to performance requirements for one demodulation branch.
For AAS BS with RX diversity, only the BS performance requirements with RX diversity apply, the required Eb/N0 for UTRA FDD and Îor/Ioc for UTRA TDD shall be applied separately for each demodulation branch.
For AAS BS without RX diversity, only the BS performance requirements without RX diversity apply. The required Eb/N0 for UTRA FDD and Îor/Ioc for UTRA TDD shall be applied for each AAS BS demodulation branch.
The Eb/N0 used for UTRA FDD is defined as:
Where:
is the received total energy of DPDCH, DPCCH, S-DPCCH, HS-DPCCH, E-DPDCH, S-E-DPDCH, E-DPCCH and S-E-DPCCH per PN chip per demodulation branch from all branches
is the total one-sided noise power spectral density due to all noise sources
is the number of chips per frame
is the number of information bits in DTCH excluding CRC bits per frame
Table 8.1.1-1: Summary of AAS BS performance targets for single RAT UTRA operation
|
Physical channel |
Measurement channel |
Static |
Multi-path Case 1 |
Multi-path Case 2 |
Multi-path Case 3 |
Moving (NOTE 1) |
Birth / Death (NOTE 1) |
High Speed Train |
|
Performance metric |
||||||||
|
DCH |
12.2 kbps |
BLER<10-2 |
BLER<10-2 |
BLER<10-2 |
BLER<10-2 |
BLER<10-2 |
BLER<10-2 |
BLER<10-2 |
|
64 kbps |
BLER< 10-1,10-2 |
BLER< 10-1, 10-2 |
BLER< 10-1,10-2 |
BLER< 10-1, 10-2,10-3 |
BLER< 10-1,10-2 |
BLER< 10-1,10-2 |
BLER< 10-1, 10-2 (NOTE 2) |
|
|
144 kbps |
BLER< 10-1,10-2 |
BLER< 10-1,10-2 |
BLER< 10-1,10-2 |
BLER< 10-1, 10-2,10-3 |
– |
– |
||
|
384 kbps |
BLER< 10-1,10-2 |
BLER< 10-1,10-2 |
BLER< 10-1,10-2 |
BLER< 10-1, 10-2,10-3 |
– |
– |
||
|
NOTE 1: UTRA FDD only. NOTE 2: UTRA TDD only. NOTE 3: If not stated otherwise, the above performance targets are applicable to UTRA TDD and to UTRA FDD. NOTE 4: In case of multiple BLER level thresholds listed for single requirement and measurement cannel combination, those BLER level values are reflected by set multiple requirements in 3GPP TS 25.104 [2], or 3GPP TS 25.105 [3]. |
||||||||
8.1.2 E-UTRA operation
Performance requirements for the AAS BS are specified for the fixed reference channels (FRC) and propagation conditions defined in 3GPP TS 36.104 [8] annex A and annex B, respectively. The requirements only apply to those FRCs that are supported by the AAS BS.
Unless stated otherwise, performance requirements apply for a single carrier only. Performance requirements for an AAS BS E-UTRA supporting carrier aggregation are defined in terms of single carrier requirements. For FDD operation the requirements shall be met with the transmitter unit(s) associated with the TAB connectors(s) in the operating band ON.
NOTE: In normal operating conditions TAB connectors in FDD operation are configured to transmit and receive at the same time. The transmitter unit(s) associated with the TAB connectors may be OFF for some of the tests as specified in TS 37.145-1 [29] and TS 37.145-2 [30].
In the referred E-UTRA specification, the term "RX antennas" refers to demodulation branches (and not physical antennas).
The SNR used in this clause is specified based on a single carrier and defined as:
SNR = S / N
Where:
S is the total signal energy in the subframe on a single TAB connector.
N is the noise energy in a bandwidth corresponding to the transmission bandwidth over the duration of a subframe.
For enhanced performance requirements type A and type B, the SINR used in this clause is specified based on a single carrier and defined as:
Where:
is the total signal energy of one intra-cell UE in the subframe on a single TAB connector.
is the summation of the received energy of the strongest inter-cell interferers explicitly defined in a test procedure plus the white noise energy N, in a bandwidth corresponding to the transmission bandwidth over the duration of a subframe on a single TAB connector. The respective energy of each inter-cell interferer relative to 
is defined by its associated DIP value
8.2 Minimum requirements for MSR operation
For single RAT UTRA operation, minimum requirements for demodulation performance are specified in subclause 8.3.
For single RAT E-UTRA operation, minimum requirements for demodulation performance are specified in subclause 8.4.
8.3 Minimum requirements for UTRA operation
The single RAT UTRA operation in FDD shall fulfil all mandatory BS demodulation performance requirements specified in subclauses 8.2 to 8.12 of 3GPP TS 25.104 [6].
The single RAT UTRA operation in TDD shall fulfil all mandatory BS demodulation performance requirements specified in subclauses 8.2 to 8.5 of 3GPP TS 25.105 [7].
In the referred UTRA specifications, the term BS with RX diversity refers to performance requirements for two demodulation branches, and BS without RX diversity refers to performance requirements for one demodulation branch.
8.4 Minimum requirements for E-UTRA operation
The single RAT E-UTRA operation shall fulfil all mandatory BS demodulation performance requirements specified in subclauses 8.2 to 8.4 of 3GPP TS 36.104 [8].
In the referred E-UTRA specification, the term "RX antennas" refers to demodulation branches (i.e. not physical antennas).