7 Conducted receiver characteristics
36.1083GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18Satellite Access Node radio transmission and receptionTS
7.1 General
Conducted receiver characteristics are specified at the TAB connector for hybrid AAS SAN, with full complement of transceivers for the configuration in normal operating condition.
Unless otherwise stated, the following arrangements apply for conducted receiver characteristics requirements in clause 7:
– Requirements shall be met for any transmitter setting.
– The requirements shall be met with the transmitter unit(s) ON.
– Throughput requirements do not assume HARQ retransmissions.
– When SAN is configured to receive multiple carriers, all the throughput requirements are applicable for each received carrier.
– For ACS, blocking and intermodulation characteristics, the negative offsets of the interfering signal apply relative to the lower SAN RF Bandwidth edge or sub-block edge inside a sub-block gap, and the positive offsets of the interfering signal apply relative to the upper SAN RF Bandwidth edge or sub-block edge inside a sub-block gap.
NOTE: In normal operating condition the SAN is configured to transmit and receive at the same time.
7.2 Reference sensitivity level
7.2.1 General
The reference sensitivity power level PREFSENS is the minimum mean power received at the TAB connector for SAN type 1-H at which a throughput requirement shall be met for a specified reference measurement channel.
7.2.2 Minimum requirements for SAN type 1-H
For SAN supporting E-UTRA, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in table 7.2.2-1 and 7.2.2-2 for SAN type 1-H in all operating band.
Table 7.2.2-1: Reference sensitivity levels of SAN supporting E-UTRA (GEO class payload)
|
SAN channel bandwidth (MHz) |
Sub-carrier spacing (kHz) |
Reference measurement channel (NOTE) |
Reference sensitivity power level, PREFSENS (dBm) |
|
1.4 |
15 |
FRC A1-1 in Annex A.1 |
-104.4 |
|
NOTE: PREFSENS is the power level of a single instance of the reference measurement channel. |
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Table 7.2.2-2: Reference sensitivity levels of SAN supporting E-UTRA (LEO class payload)
|
SAN channel bandwidth (MHz) |
Sub-carrier spacing (kHz) |
Reference measurement channel (NOTE) |
Reference sensitivity power level, PREFSENS (dBm) |
|
1.4 |
15 |
FRC A1-1 in Annex A.1 |
-107.5 |
|
NOTE: PREFSENS is the power level of a single instance of the reference measurement channel. |
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For SAN supporting standalone NB-IoT operation, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in Annex A.1 with parameters specified in Table 7.2.2-3 and 7.2.2-4 for SAN type 1-H in all operating band.
Table 7.2.1-3: Reference sensitivity levels of SAN supporting standalone NB-IoT operation (GEO class payload)
|
SAN channel bandwidth [kHz] |
Sub-carrier spacing [kHz] |
Reference measurement channel |
Reference sensitivity power level, PREFSENS [dBm] |
|
200 |
15 |
FRC A14-1 in Annex A.14 |
-124.9 |
|
200 |
3.75 |
FRC A14-2 in Annex A.14 |
-130.9 |
Table 7.2.1-4: Reference sensitivity levels of SAN supporting standalone NB-IoT operation (LEO class payload)
|
SAN channel bandwidth [kHz] [kHz] |
Sub-carrier spacing [kHz] |
Reference measurement channel |
Reference sensitivity power level, PREFSENS [dBm] |
|
200 |
15 |
FRC A14-1 in Annex A.14 |
-128.0 |
|
200 |
3.75 |
FRC A14-2 in Annex A.14 |
-134.0 |
7.3 Dynamic range
7.3.1 General
The dynamic range is specified as a measure of the capability of the receiver to receive a wanted signal in the presence of an interfering signal at the TAB connector for SAN type 1-H inside the received SAN channel bandwidth. In this condition, a throughput requirement shall be met for a specified reference measurement channel. The interfering signal for the dynamic range requirement is an AWGN signal.
7.3.2 Minimum requirements for SAN type 1-H
For SAN supporting E-UTRA, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in Annex A.2 with parameters specified in table 7.3.2-1 for LEO.
Table 7.3.2-1: Dynamic range of SAN supporting E-UTRA (LEO class payload)
|
SAN channel bandwidth [MHz] |
Reference measurement channel |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] / BWConfig |
Type of interfering signal |
|
1.4 |
FRC A2-1 in Annex A.2 |
-82.0 |
-94.4 |
AWGN |
|
Note*: The wanted signal mean power is the power level of a single instance of the reference measurement channel. |
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For SAN supporting standalone NB-IoT operation, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in Annex A.2 with parameters specified in Table 7.3.2-2 and 7.3.2-3 .
Table 7.3.2-2: Dynamic range of SAN supporting standalone NB-IoT operation (GEO class payload)
|
SAN channel bandwidth [kHz] |
Reference measurement channel |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] / BWChannel |
Type of interfering signal |
|
200 |
FRC A15-1 in Annex A.15 |
-97.3 |
-93.6 |
AWGN |
|
200 |
FRC A15-2 in Annex A.15 |
-103.2 |
-93.6 |
AWGN |
Table 7.3.2-3: Dynamic range of SAN supporting standalone NB-IoT operation (LEO class payload)
|
SAN channel bandwidth [kHz] |
Reference measurement channel |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] / BWChannel |
Type of interfering signal |
|
200 |
FRC A15-1 in Annex A.15 |
[-89.4] |
[-85.7] |
AWGN |
|
200 |
FRC A15-2 in Annex A.15 |
[-95.3] |
[-85.7] |
AWGN |
7.4 In-band selectivity and blocking
7.4.1 Adjacent Channel Selectivity (ACS)
7.4.1.1 General
Adjacent channel selectivity (ACS) is a measure of the receiver’s ability to receive a wanted signal at its assigned channel frequency at TAB connector for SAN type 1-H in the presence of an adjacent channel signal with a specified center frequency offset of the interfering signal to the band edge of a victim system.
7.4.1.2 Minimum requirements for SAN type 1-H
The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.
For SAN supporting E-UTRA, the wanted and the interfering signal coupled to the SAN type 1-H TAB connector are specified in table 7.4.1.2-1. The reference measurement channel for the wanted signal is identified in table 7.2.2-1 for each SAN channel bandwidth in any operating band and further specified in annex A.1. The characteristics of the interfering signal is further specified in annex C.
For SAN supporting standalone NB-IoT operation, the wanted and the interfering signal coupled to the SAN type 1-H TAB connector are specified in table 7.4.1.2-2. The reference measurement channel for the wanted signal is identified in table 7.2.2-1 for each SAN channel bandwidth in any operating band and further specified in annex A.1. The characteristics of the interfering signal is further specified in annex C.
The ACS requirement is applicable outside the SAN RF Bandwidth or Radio Bandwidth. The interfering signal offset is defined relative to the SAN RF Bandwidth edges or Radio Bandwidth edges.
Minimum conducted requirement is defined at the TAB connector for SAN type 1-H.
Table 7.4.1.2-1: ACS requirement of SAN supporting E-UTRA
|
SAN channel bandwidth of the lowesthighest carrier received [MHz] |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] |
Interfering signal centre frequency offset from the lower/upper Base Station RF Bandwidth edge or sub-block edge inside a sub-block gap [MHz] |
Type of interfering signal |
|
1.4 |
PREFSENS + 11dB (Note) |
GEO SAN class: -57.6 LEO SAN class: -60.7 |
±0.7025 |
1.4MHz E-UTRA signal |
|
Note: PREFSENS depends on the channel bandwidth as specified in Table 7.2.2-1 and Table 7.2.2-2. |
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Table 7.4.1.2-2: ACS requirement of SAN supporting standalone NB-IoT operation
|
SAN channel bandwidth of the lowest/highest carrier received [kHz] |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] |
Interfering signal centre frequency offset to the lower/upper Base Station RF Bandwidth edge or sub-block edge inside a sub-block gap [kHz] |
Type of interfering signal |
|
200 |
PREFSENS + 19.5dB (Note) |
GEO SAN class: -56.6 LEO SAN class: -59.7 |
±100 |
180 kHz NB-IoT signal |
|
Note: PREFSENS depends on the sub-carrier spacing as specified in Table 7.2.2-3 and Table 7.2.2-4. |
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7.4.2 In-band blocking
The requirement is not applicable in this version of the specification.
7.5 Out-of-band blocking
7.5.1 General
The out-of-band blocking characteristics is a measure of the receiver ability to receive a wanted signal at its assigned channel at the TAB connector for SAN type 1-H in the presence of an unwanted interferer out of the operating band, which is a CW signal for out-of-band blocking.
7.5.2 Minimum requirements for SAN type 1-H
The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel, with a wanted and an interfering signal coupled to SAN type 1-H TAB connector using the parameters in table 7.5.2-1.
The reference measurement channel for the wanted signal is identified in clause 7.2.2 for each SAN channel bandwidth and further specified in annex A.1.
The out-of-band blocking requirement apply from 1 MHz to FUL,low – ΔfOOB and from FUL,high + ΔfOOB up to 12750 MHz, including the downlink frequency range of the FDD operating band for SAN. The ΔfOOB for SAN type 1-H is defined in table 7.5.2-2.
Minimum conducted requirement is defined at the antenna connector at the TAB connector for SAN type 1-H.
Table 7.5.2-1: Out-of-band blocking requirement for SAN supporting E-UTRA or standalone NB-IoT operation
|
Wanted signal mean power (dBm) |
Interfering signal mean power (dBm) |
Type of interfering signal |
|
PREFSENS +6 dB |
-44 |
CW carrier |
|
NOTE 1: For SAN, PREFSENS depends on the SAN channel bandwidth. Note 2: [For SAN supporting standalone NB-IoT, up to 24 exceptions are allowed for spurious response frequencies in each wanted signal frequency when measured using a 1MHz step size. For these exceptions the above throughput requirement shall be met when the blocking signal is set to a level of -46 dBm for 3.75 kHz subcarrier spacing. In addition, each group of exceptions shall not exceed three contiguous measurements using a 1MHz step size.] |
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Table 7.5.2-2: ΔfOOB offset for E-UTRA operating bands
|
SAN type |
Operating band characteristics |
ΔfOOB (MHz) |
|
SAN type 1-H |
FUL,high – FUL,low < 100 MHz |
20MHz |
7.6 Receiver spurious emissions
7.6.1 General
The requirement is not applicable in this version of the specification. TAB connectors shall always support both TX and RX.
7.7 Receiver intermodulation
The requirement is not applicable in this version of the specification.
7.8 In-channel selectivity
7.8.1 General
In-channel selectivity (ICS) is a measure of the receiver ability to receive a wanted signal at its assigned resource block locations at TAB connector for SAN type 1-H in the presence of an interfering signal received at a larger power spectral density. In this condition a throughput requirement shall be met for a specified reference measurement channel. The interfering signal shall be an E-UTRA signal which is time aligned with the wanted signal.
7.8.2 Minimum requirements for SAN type 1-H
For SAN supporting E-UTRA, the throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in annex A.1 with parameters specified in table 7.8.2-1 for GEO SAN, in table 7.8.2-2 for LEO SAN. The characteristics of the interfering signal is further specified in annex C.
Table 7.8.2-1 In-channel selectivity of SAN supporting E-UTRA (GEO class payload)
|
SAN channel bandwidth (MHz) |
Reference measurement channel |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] |
Type of interfering signal |
|
1.4 |
A1-4 in Annex A.1 |
-104.5 |
-97.6 |
1.4 MHz E-UTRA signal, 3 RBs |
Table 7.8.2-2 In-channel selectivity of SAN supporting E-UTRA (LEO class payload)
|
SAN channel bandwidth (MHz) |
Reference measurement channel |
Wanted signal mean power [dBm] |
Interfering signal mean power [dBm] |
Type of interfering signal |
|
1.4 |
A1-4 in Annex A.1 |
-107.6 |
-88.7 |
1.4 MHz E-UTRA signal, 3 RBs |