10 Radiated receiver characteristics

38.1083GPPNRRelease 17Satellite Access Node radio transmission and receptionTS

10.1 General

Radiated receiver characteristics are specified at RIB for SAN type 1-H or SAN type 1-O, with full complement of transceivers for the configuration in normal operating condition.

Unless otherwise stated, the following arrangements apply for the radiated receiver characteristics requirements in clause 10:

– Requirements shall be met for any transmitter setting.

– The requirements shall be met with the transmitter unit(s) ON.

– Throughput requirements defined for the radiated receiver characteristics 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, and the positive offsets of the interfering signal apply relative to the upper SAN RF Bandwidth edge.

– Each requirement shall be met over the RoAoA specified.

NOTE 1: In normal operating condition the SAN in FDD operation is configured to transmit and receive at the same time.

For FR1 requirements which are to be met over the OTA REFSENS RoAoA absolute requirement values are offset by the following term:

Δ_OTAREFSENS = 44.1 – 10*log₁₀(BeW_θ,REFSENS*BeW_φ,REFSENS) dB for the reference direction

and

Δ_OTAREFSENS = 41.1 – 10*log₁₀(BeW_θ,REFSENS*BeW_φ,REFSENS) dB for all other directions

For requirements which are to be met over the minSENS RoAoA absolute requirement values are offset by the following term:

Δ_minSENS = P_REFSENS – EIS_minSENS (dB)

10.2 OTA sensitivity

10.2.1 General

The OTA sensitivity requirement is a directional requirement based upon the declaration of one or more OTA sensitivity direction declarations (OSDD), related to a SAN type 1-H and SAN type 1-O receiver.

The SAN type 1-H and SAN type 1-O may optionally be capable of redirecting/changing the receiver target by means of adjusting SAN settings resulting in multiple sensitivity RoAoA. The sensitivity RoAoA resulting from the current SAN settings is the active sensitivity RoAoA.

If the SAN is capable of redirecting the receiver target related to the OSDD then the OSDD shall include:

– SAN channel bandwidth and declared minimum EIS level applicable to any active sensitivity RoAoA inside the receiver target redirection range in the OSDD.

– A declared receiver target redirection range, describing all the angles of arrival that can be addressed for the OSDD through alternative settings in the SAN.

– Five declared sensitivity RoAoA comprising the conformance testing directions as detailed in TS 38.181 [3].

– The receiver target reference direction.

NOTE 1: Some of the declared sensitivity RoAoA may coincide depending on the redirection capability.

NOTE 2: In addition to the declared sensitivity RoAoA, several sensitivity RoAoA may be implicitly defined by the receiver target redirection range without being explicitly declared in the OSDD.

If the SAN is not capable of redirecting the receiver target related to the OSDD, then the OSDD includes only:

– The set(s) of RAT, SAN channel bandwidth and declared minimum EIS level applicable to the sensitivity RoAoA in the OSDD.

– One declared active sensitivity RoAoA.

– The receiver target reference direction.

NOTE 4: For SAN without target redirection capability, the declared (fixed) sensitivity RoAoA is always the active sensitivity RoAoA.

The OTA sensitivity EIS level declaration shall apply to each supported polarization, under the assumption of polarization match.

10.2.2 Minimum requirement for SAN type 1-O

For a received signal whose AoA of the incident wave is within the active sensitivity RoAoA of an OSDD, the error rate criterion as described in clause 7.2 shall be met when the level of the arriving signal is equal to the minimum EIS level in the respective declared set of EIS level and SAN channel bandwidth.

10.3 OTA reference sensitivity level

10.3.1 General

The OTA REFSENS requirement is a directional requirement and is intended to ensure the minimum OTA reference sensitivity level for a declared OTA REFSENS RoAoA. The OTA reference sensitivity power level EIS_REFSENS is the minimum mean power received at the RIB at which a reference performance requirement shall be met for a specified reference measurement channel.

The OTA REFSENS requirement shall apply to each supported polarization, under the assumption of polarization match.

10.3.2 Minimum requirement for SAN type 1-O

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel as specified in the corresponding table and annex A.1 when the OTA test signal is at the corresponding EIS_REFSENS level and arrives from any direction within the OTA REFSENS RoAoA.

Table 10.3.2-1: SAN GEO class reference sensitivity levels

SAN channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	OTA reference sensitivity level, EISREFSENS (dBm)
5, 10, 15	15	G-FR1-A1-1	-99.3 – ΔOTAREFSENS
10, 15	30	G-FR1-A1-2	-99.4 – ΔOTAREFSENS
10, 15	60	G-FR1-A1-3	-96.5 – ΔOTAREFSENS
20	15	G-FR1-A1-4	-92.9 – ΔOTAREFSENS
20	30	G-FR1-A1-5	-93.2 – ΔOTAREFSENS
20	60	G-FR1-A1-6	-93.3 – ΔOTAREFSENS
NOTE: EISREFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full SAN channel bandwidth.

Table 10.3.2-2: SAN LEO class reference sensitivity levels

SAN channel bandwidth (MHz)	Sub-carrier spacing (kHz)	Reference measurement channel	OTA reference sensitivity level, EISREFSENS (dBm)
5, 10, 15	15	G-FR1-A1-1	-102.4 – ΔOTAREFSENS
10, 15	30	G-FR1-A1-2	-102.5 – ΔOTAREFSENS
10, 15	60	G-FR1-A1-3	-99.6 – ΔOTAREFSENS
20	15	G-FR1-A1-4	-96.0 – ΔOTAREFSENS
20	30	G-FR1-A1-5	-96.3 – ΔOTAREFSENS
20	60	G-FR1-A1-6	-96.4 – ΔOTAREFSENS
NOTE: EISREFSENS is the power level of a single instance of the reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full SAN channel bandwidth.

10.4 OTA dynamic range

10.4.1 General

The OTA dynamic range is a measure of the capability of the receiver unit to receive a wanted signal in the presence of an interfering signal inside the received SAN channel bandwidth.

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the OTA REFSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

10.4.2 Minimum requirement for SAN type 1-O

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 10.4.2-1 for LEO SAN.

Table 10.4.2-1: SAN LEO class dynamic range

SAN channel bandwidth (MHz)	Subcarrier spacing (kHz)	Reference measurement channel	Wanted signal mean power (dBm)	Interfering signal mean power (dBm) / BWConfig	Type of interfering signal
5	15	G-FR1-A2-1	-76.4 – ΔOTAREFSENS	-88.2 – ΔOTAREFSENS	AWGN
	30	G-FR1-A2-2	-77.1 – ΔOTAREFSENS
10	15	G-FR1-A2-1	-76.4 – ΔOTAREFSENS	-85.0 – ΔOTAREFSENS	AWGN
	30	G-FR1-A2-2	-77.1 – ΔOTAREFSENS
	60	G-FR1-A2-3	-74.1- ΔOTAREFSENS
15	15	G-FR1-A2-1	-76.4- ΔOTAREFSENS	-83.2 – ΔOTAREFSENS	AWGN
	30	G-FR1-A2-2	-77.1 – ΔOTAREFSENS
	60	G-FR1-A2-3	-74.1 – ΔOTAREFSENS
20	15	G-FR1-A2-4	-70.2 – ΔOTAREFSENS	-81.9 – ΔOTAREFSENS	AWGN
	30	G-FR1-A2-5	-70.2 – ΔOTAREFSENS
	60	G-FR1-A2-6	-70.5 – ΔOTAREFSENS
NOTE: The wanted signal mean power is the power level of a single instance of the corresponding reference measurement channel. This requirement shall be met for each consecutive application of a single instance of the reference measurement channel mapped to disjoint frequency ranges with a width corresponding to the number of resource blocks of the reference measurement channel each, except for one instance that might overlap one other instance to cover the full SAN channel bandwidth.

10.5 OTA in-band selectivity and blocking

10.5.1 OTA adjacent channel selectivity

10.5.1.1 General

OTA Adjacent channel selectivity (ACS) is a measure of the receiver’s ability to receive an OTA wanted signal at its assigned channel frequency in the presence of an OTA adjacent channel signal with a specified centre frequency offset of the interfering signal to the band edge of a victim system.

10.5.1.2 Minimum requirement for SAN type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of a received signal and the interfering signal are from the same direction and are within the minSENS RoAoA.

The wanted and interfering signals apply to each supported polarization, under the assumption of polarization match.

The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel.

For FR1, the OTA wanted signal and the interfering signal are specified in table 10.5.1.2-1 and table 10.5.1.2-2 for OTA ACS. The reference measurement channel for the OTA wanted signal is further specified in annex A.1. The characteristic of the interfering signal is further specified in annex C.

The OTA ACS requirement is applicable outside the SAN RF Bandwidth or Radio Bandwidth. The OTA interfering signal offset is defined relative to the SAN RF Bandwidth edges or Radio Bandwidth edges.

Table 10.5.1.2-1: OTA ACS requirement for SAN type 1-O

SAN channel bandwidth of the lowest/highest carrier received (MHz)	Wanted signal mean power (dBm) (NOTE 2)	Interfering signal mean power (dBm)
5, 10, 15, 20 (NOTE 1)	EISminSENS + 6 dB	SAN LEO class: -60 – ΔminSENS SAN GEO class: -57 – ΔminSENS
NOTE 1: The SCS for the lowest/highest carrier received is the lowest SCS supported by the SAN for that bandwidth NOTE 2: EISminSENS depends on the SAN channel bandwidth

Table 10.5.1.2-2: OTA ACS interferer frequency offset for SAN type 1-O

SAN channel bandwidth of the lowest/highest carrier received (MHz)	Interfering signal centre frequency offset from the lower/upper SAN RF Bandwidth edge or sub-block edge inside a sub-block gap (MHz)	Type of interfering signal
5	±2.5025	5 MHz CP-OFDM NR signal, 15 kHz SCS, 25 RBs
10	±2.5075
15	±2.5125
20	±2.5025

10.5.2 OTA in-band blocking

The requirement is not applicable in this version of the specification.

10.6 OTA out-of-band blocking

10.6.1 General

The OTA out-of-band blocking characteristics are a measure of the receiver unit ability to receive a wanted signal at the RIB at its assigned channel in the presence of an unwanted interferer.

10.6.2 Minimum requirement for SAN type 1-O

10.6.2.1 General minimum requirement

The requirement shall apply at the RIB when the AoA of the incident wave of the received signal and the interfering signal are from the same direction and are within the minSENS RoAoA.

The wanted signal applies to each supported polarization, under the assumption of polarization match. The interferer shall be polarization matched in-band and the polarization maintained for out-of-band frequencies.

For OTA wanted and OTA interfering signals provided at the RIB using the parameters in table 10.6.2.1-1, the following requirements shall be met:

– The throughput shall be ≥ 95% of the maximum throughput of the reference measurement channel. The reference measurement channel for the OTA wanted signal is identified in clause 10.3.2 for each SAN channel bandwidth and further specified in annex A.1.

For SAN type 1-O the OTA out-of-band blocking requirement apply from 30 MHz to F_UL,low – Δf_OOB and from F_UL,high + Δf_OOB up to 12750 MHz, including the downlink frequency range of the SAN operating band. The Δf_OOB for SAN type 1-O is defined in table 10.6.2.1-2.

Table 10.6.2.1-1: OTA out-of-band blocking performance requirement

Wanted signal mean power (dBm)	Interfering signal RMS field-strength (V/m)	Type of interfering Signal
EISminSENS + 6 dB (NOTE 1)	0.0029 (NOTE 2)	CW carrier
NOTE 1: EISminSENS depends on the channel bandwidth as specified in clause 10.2. NOTE 2: The RMS field-strength level in V/m is related to the interferer EIRP level at a distance described as , where EIRP is in W and r is in m.

Table 10.6.2.1-2: Δf_OOB offset for satellite operating bands

SAN type	Operating band characteristics	ΔfOOB (MHz)
SAN type 1-O	FUL,high – FUL,low < 100 MHz	20

10.7 OTA receiver spurious emissions

The requirement is not applicable in this version of the specification.

10.7.1 Void

10.7.2 Void

10.8 OTA receiver intermodulation

The requirement is not applicable in this version of the specification.

10.9 OTA in-channel selectivity

10.9.1 General

In-channel selectivity (ICS) is a measure of the receiver ability to receive a wanted signal at its assigned resource block locations 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 NR signal as specified in annex A.1 and shall be time aligned with the wanted signal.

10.9.2 Minimum requirement for SAN type 1-O

The requirement shall apply at the RIB when the AoA of the incident wave of the received signal and the interfering signal are the same direction and are within the minSENS RoAoA.

The wanted and interfering signals applies to each supported polarization, under the assumption of polarization match.

For a wanted and an interfering signal coupled to the RIB, the following requirements shall be met:

– For SAN type 1-O, 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 10.9.2-1 for GEO SAN, in table 10.9.2-2 for LEO SAN. The characteristics of the interfering signal is further specified in annex C.

Table 10.9.2-1: SAN GEO classICS requirement

SAN channel bandwidth (MHz)	Subcarrier spacing (kHz)	Reference measurement channel	Wanted signal mean power (dBm)	Interfering signal mean power (dBm)	Type of interfering signal
5	15	G-FR1-A1-7	-98.2 – ΔminSENS	-92.0 – ΔminSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 10 RBs
10,15,20	15	G-FR1-A1-1	-96.3 – ΔminSENS	-88.1 – ΔminSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
5	30	G-FR1-A1-8	-98.9 – ΔminSENS	-92.0 – ΔminSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 5 RBs
10,15,20	30	G-FR1-A1-2	-96.4 – ΔminSENS	-89.0 – ΔminSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 10 RBs
10,15,20	60	G-FR1-A1-9	-95.8 – ΔminSENS	-89.0 – ΔminSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 5 RBs
NOTE: Wanted and interfering signal are placed adjacently around Fc, where the Fc is defined for SAN channel bandwidth of the wanted signal according to the table 5.4.2.2-1. The aggregated wanted and interferer signal shall be centred in the SAN channel bandwidth of the wanted signal.

Table 10.9.2-2: SAN LEO class ICS requirement

SAN channel bandwidth (MHz)	Subcarrier spacing (kHz)	Reference measurement channel	Wanted signal mean power (dBm)	Interfering signal mean power (dBm)	Type of interfering signal
5	15	G-FR1-A1-7	-101.3 – ΔminSENS	-83.1 – ΔminSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 10 RBs
10,15,20	15	G-FR1-A1-1	-99.4 – ΔminSENS	-79.2 – ΔminSENS	DFT-s-OFDM NR signal, 15 kHz SCS, 25 RBs
5	30	G-FR1-A1-8	-102.0 – ΔminSENS	-83.1 – ΔminSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 5 RBs
10,15,20	30	G-FR1-A1-2	-99.5 – ΔminSENS	-80.1 – ΔminSENS	DFT-s-OFDM NR signal, 30 kHz SCS, 10 RBs
10,15,20	60	G-FR1-A1-9	-98.9 – ΔminSENS	-80.1 – ΔminSENS	DFT-s-OFDM NR signal, 60 kHz SCS, 5 RBs
NOTE: Wanted and interfering signal are placed adjacently around Fc, where the Fc is defined for SAN channel bandwidth of the wanted signal according to the table 5.4.2.2-1. The aggregated wanted and interferer signal shall be centred in the SAN channel bandwidth of the wanted signal.