6 Conducted transmitter characteristics
38.101-53GPPNRPart 5: Satellite access Radio Frequency (RF) and performance requirementsRelease 17TSUser Equipment (UE) radio transmission and reception
6.1 General
Unless otherwise stated, the transmitter characteristics for satellite access UEs are specified at the antenna connector of the UE with a single or multiple transmit antenna(s). For UE with integral antenna only, a reference antenna with a gain of 0 dBi is assumed. Handheld power class 3 UE is assumed in Release 17 for satellite access.
6.2 Transmitter power
6.2.1 UE maximum output power
The following UE Power Classes define the maximum output power for any transmission bandwidth within the channel bandwidth of NR carrier unless otherwise stated. The period of measurement shall be at least one sub frame (1ms).
Table 6.2.1-1: UE Power Class
|
NR satellite band |
Class 3 (dBm) |
Tolerance (dB) |
|
n256 |
23 |
±2 |
|
n255 |
23 |
±2 |
|
NOTE 1: PPowerClass is the maximum UE power specified without taking into account the tolerance NOTE 2: Power class 3 is default power class unless otherwise stated |
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6.2.2 UE maximum output power reduction
UE is allowed to reduce the maximum output power due to higher order modulations and transmit bandwidth configurations. For UE power class 3, the allowed maximum power reduction (MPR) is defined as Table 6.2.2-1 in 3GPP TS 38.101-1[5] clause 6.2.2.
6.2.3 UE additional maximum output power reduction
6.2.3.1 General
Additional emission requirements can be signalled by the network. Each additional emission requirement is associated with a unique network signalling (NS) value indicated in RRC signalling by an NR frequency band number of the applicable operating band and an associated value in the field additionalSpectrumEmission. Throughout this specification, the notion of indication or signalling of an NS value refers to the corresponding indication of an NR satellite band number of the applicable operating band, the IE field freqBandIndicatorNR and an associated value of additionalSpectrumEmission in the relevant RRC information elements [6].
To meet the additional requirements, additional maximum power reduction (A-MPR) is allowed for the maximum output power as specified in Table 6.2.1-1. Unless stated otherwise, the total reduction to UE maximum output power is max(MPR, A-MPR) where MPR is defined in clause 6.2.2. Outer and inner allocation notation used in clause 6.2.3 is defined in 3GPP TS 38.101-1 [5] clause 6.2.2. In absence of modulation and waveform types the A-MPR applies to all modulation and waveform types.
Table 6.2.3.1-1 specifies the additional requirements with their associated network signalling values and the allowed A-MPR and applicable operating band(s) for each NS value. The mapping of NR satellite band numbers and values of the additionalSpectrumEmission to network signalling labels is specified in Table 6.2.3.1-1A.
Table 6.2.3.1-1: Additional maximum power reduction (A-MPR)
|
Network signalling label |
Requirements (clause) |
NR satellite Band |
Channel bandwidth (MHz) |
Resources blocks (NRB) |
A-MPR (dB) |
|
NS_01 |
Table 5.2-1 |
5, 10, 15, 20 |
Table 5.3.2-1 in 3GPP TS 38.101-1 [5] |
N/A |
|
|
NS_24 |
6.5.3.3.13 in 3GPP TS 38.101-1 [5] |
n256 |
5, 10, 15, 20 |
Table 6.2.3.15-1 in 3GPP TS 38.101-1 [5] |
Clause 6.2.3.7 in 3GPP TS 38.101-1 [5]2 |
|
NS_57N |
6.5.3.3.2 |
n255 |
5, 10, 15, 20 |
N/A |
|
|
NS_100 |
6.5.2.4.2 in 3GPP TS 38.101-1 [5] |
n2561 |
Table 6.2.3.1-2 in 3GPP TS 38.101-1 [5] |
||
|
NOTE 1: This NS can be signalled for NR bands that have UTRA services deployed. NOTE 2: A-MPR for the upper 5 MHz of the band is not specified, and therefore shall be used as a guard band. |
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[The NS_01 label with the field additionalPmax [8] absent is default for all NTN satellite bands.]
Table 6.2.3.1-1A: Mapping of network signalling label
|
NR satellite band |
Value of additionalSpectrumEmission |
|||||||
|
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
|
|
n256 |
NS_01 |
NS_24 |
NS_100 |
|||||
|
n255 |
NS_01 |
NS_57N |
||||||
|
NOTE: additionalSpectrumEmission corresponds to an information element of the same name defined in clause 6.3.2 of 3GPP TS 38.331 [8]. |
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6.2.4 Configured transmitted power
The requirements for configured transmitted power defined in subclause 6.2.4 of 3GPP TS 38.101-1 [5] clause 6.2.4 shall apply to NTN satellite UE.
6.3 Output power dynamics.
6.3.1 Minimum output power
The minimum controlled output power of the UE is defined as the power in the channel bandwidth for all transmit bandwidth configurations (resource blocks), when the power is set to a minimum value.
The minimum output power is defined as the mean power in at least one sub-frame (1 ms). The minimum output power shall not exceed the values specified in Table 6.3.1-1.
Table 6.3.1-1: Minimum output power
|
Channel bandwidth (MHz) |
Minimum output power (dBm) |
Measurement bandwidth (MHz) |
|
5 |
-40 |
4.515 |
|
10 |
-40 |
9.375 |
|
15 |
-40 |
14.235 |
|
20 |
-40 |
19.095 |
6.3.2 Transmit OFF power
Transmit OFF power is defined as the mean power in the channel bandwidth when the transmitter is OFF. The transmitter is considered OFF when the UE is not allowed to transmit on any of its ports.
The transmit OFF power is defined as the mean power in a duration of at least one sub-frame (1 ms) excluding any transient periods. The transmit OFF power shall not exceed the values specified in Table 6.3.2-1.
Table 6.3.2-1: Transmit OFF power
|
Channel bandwidth |
(MHz) |
5, 10, 15, 20 |
|
REF_SCS |
(kHz) |
15 |
|
Transmit OFF power |
(dBm) |
-50 |
|
Measurement bandwidth |
(MHz) |
MBW=REF_SCS*(12*NRB+1)/1000 |
6.3.3 Transmit ON/OFF time mask
The requirements for transmit ON/OFF time mask defined in 3GPP TS 38.101-1 [5] clause 6.3.3 shall apply for NTN satellite UE.
6.3.4 Power control
The requirements for Power control defined in 3GPP TS 38.101-1 [5] clause 6.3.4 shall apply for NTN satellite UE.
6.4 Transmit signal quality
6.4.1 Frequency error
The NTN satellite UE basic measurement interval of modulated carrier frequency is 1 UL slot. The NTN satellite UE pre-compensates the uplink modulated carrier frequency by the estimated Doppler shift according to 3GPP TS 38.300 [9] clause 16.14.2. The mean value of basic measurements of NTN UE modulated carrier frequency shall be accurate to within ± 0.1 PPM observed over a period of 1 ms of cumulated measurement intervals compared to ideally pre-compensated reference uplink carrier frequency.
[NOTE: The ideally pre-compensated reference uplink carrier frequency consists of the UL carrier frequency signalled to the UE by SAN and UL pre-compensated Doppler frequency shift. For the test case, the location of the UE is explicitly provided to the UE from the test equipment.]
Requirement will be verified for at least two cases of which one has zero Doppler conditions.
6.4.2 Transmit modulation quality
The requirements for transmit modulation quality defined in 3GPP TS 38.101-1 [5] clause 6.4.2 shall apply for NTN satellite UE except for the requirements for Pi/2 BPSK modulation.
6.5 Output RF spectrum emissions
6.5.1 Occupied bandwidth
Occupied bandwidth is defined as the bandwidth containing 99 % of the total integrated mean power of the transmitted spectrum on the assigned channel. The occupied bandwidth for all transmission bandwidth configurations (Resources Blocks) shall be less than the channel bandwidth specified in Table 6.5.1-1.
Table 6.5.1-1: Occupied channel bandwidth
|
NR NTN satellite channel bandwidth (MHz) |
|
|
5, 10, 15, 20 |
|
|
Occupied channel bandwidth (MHz) |
Same as NR NTN satellite channel bandwidth |
6.5.2 Out of band emission
6.5.2.1 General
The Out of band emissions are unwanted emissions immediately outside the assigned channel bandwidth resulting from the modulation process and non-linearity in the transmitter but excluding spurious emissions. This out of band emission limit is specified in terms of a spectrum emission mask and an adjacent channel leakage power ratio.
To improve measurement accuracy, sensitivity and efficiency, the resolution bandwidth may be smaller than the measurement bandwidth. When the resolution bandwidth is smaller than the measurement bandwidth, the result should be integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of the measurement bandwidth.
6.5.2.2 Spectrum emission mask
The spectrum emission mask of the UE applies to frequencies (ΔfOOB) starting from the ± edge of the assigned NR channel bandwidth. For frequencies offset greater than ΔfOOB, the spurious requirements in clause 6.5.3 are applicable.
NOTE: For measurement conditions at the edge of each frequency range, the lowest frequency of the measurement position in each frequency range should be set at the lowest boundary of the frequency range plus MBW/2. The highest frequency of the measurement position in each frequency range should be set at the highest boundary of the frequency range minus MBW/2. MBW denotes the measurement bandwidth defined for the protected band.
The power of any UE emission shall not exceed the levels specified in Table 6.5.2.2-1 for the specified channel bandwidth.
Table 6.5.2.2-1: General NR spectrum emission mask
|
ΔfOOB (MHz) |
Channel bandwidth (MHz) / Spectrum emission limit (dBm) |
Measurement bandwidth |
|
|
5 |
10, 15, 20 |
||
|
± 0-1 |
-13 |
-13 |
1 % of channel BW |
|
± 1-5 |
-10 |
-10 |
1 MHz |
|
± 5-6 |
-13 |
||
|
± 6-10 |
-25 |
||
|
± 5-BWChannel |
-13 |
||
|
± BWChannel-(BWChannel+5) |
-25 |
||
6.5.2.3 “Reserved”
6.5.2.4 Adjacent channel leakage ratio
Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the filtered mean power centred on the assigned channel frequency to the filtered mean power centred on an adjacent channel frequency.
To improve measurement accuracy, sensitivity and efficiency, the resolution bandwidth may be smaller than the measurement bandwidth. When the resolution bandwidth is smaller than the measurement bandwidth, the result should be integrated over the measurement bandwidth in order to obtain the equivalent noise bandwidth of the measurement bandwidth.
6.5.2.4.1 NR ACLR
NR Adjacent Channel Leakage power Ratio (NRACLR) is the ratio of the filtered mean power centred on the assigned NR channel frequency to the filtered mean power centred on an adjacent NR channel frequency at nominal channel spacing.
The assigned NR channel power and adjacent NR channel power are measured with rectangular filters with measurement bandwidths specified in Table 6.5.2.4.1-1.
If the measured adjacent channel power is greater than –50 dBm then the NRACLR shall be higher than the value specified in Table 6.5.2.4.1-2.
Table 6.5.2.4.1-1: NR ACLR measurement bandwidth
|
Channel bandwidth |
(MHz) |
5,10,15,20 |
|
REF_SCS |
(kHz) |
15 |
|
NR ACLR measurement bandwidth |
(MHz) |
MBW=REF_SCS*(12*NRB+1)/1000 |
Table 6.5.2.4.1-2: NR ACLR requirement
|
Power class 3 |
|
|
NR ACLR |
30 dB |
6.5.2.4.2 UTRA ACLR
UTRA adjacent channel leakage power ratio (UTRAACLR) is the ratio of the filtered mean power centred on the assigned NR channel frequency to the filtered mean power centred on an adjacent(s) UTRA channel frequency.
UTRAACLR is specified for the first adjacent UTRA channel (UTRAACLR1) which center frequency is ± 2.5 MHz from NR channel edge and for the 2nd adjacent UTRA channel (UTRAACLR2) which center frequency is ± 7.5 MHz from NR channel edge.
The UTRA channel power is measured with a RRC filter with roll-off factor = 0.22 and bandwidth of 3.84 MHz. The assigned NR channel power is measured with a rectangular filter with measurement bandwidth specified in Table 6.5.2.4.1-1.
If the measured adjacent channel power is greater than – 50 dBm then the UTRAACLR1 and UTRAACLR2 shall be higher than the value specified in Table 6.5.2.4.2-1.
Table 6.5.2.4.2-1: UTRA ACLR requirement
|
Power class 3 |
|
|
UTRAACLR1 |
33 dB |
|
UTRAACLR2 |
36 dB |
UTRA ACLR requirement is applicable when signalled by the network with network signalling value indicated by the field additionalSpectrumEmission.
6.5.3 Spurious emission
6.5.3.1 General spurious emissions
Unless otherwise stated, the spurious emission limits apply for the frequency ranges that are more than FOOB (MHz) in Table 6.5.3.1-1 from the edge of the channel bandwidth. The spurious emission limits in Table 6.5.3.1-2 apply for all transmitter band configurations (NRB) and channel bandwidths.
Table 6.5.3.1-1: Boundary between NR out of band and general spurious emission domain
|
Channel bandwidth |
OOB boundary FOOB (MHz) |
|
BWChannel |
BWChannel + 5 |
Table 6.5.3.1-2: Requirement for general spurious emissions limits
|
Frequency Range |
Maximum Level |
Measurement bandwidth |
NOTE |
|
9 kHz ≤ f < 150 kHz |
-36 dBm |
1 kHz |
|
|
150 kHz ≤ f < 30 MHz |
-36 dBm |
10 kHz |
|
|
30 MHz ≤ f < 1000 MHz |
-36 dBm |
100 kHz |
|
|
1 GHz ≤ f < 5th harmonic of the upper frequency edge of the UL operating band in GHz |
-30 dBm |
1 MHz |
6.5.3.2 Spurious emissions for UE co-existence
This clause specifies the requirements for NR NTN satellite bands for UE coexistence with protected bands.
Table 6.5.3.2-1: Requirements for spurious emissions for UE co-existence
|
NR NTN satellite Band |
Spurious emission for UE co-existence |
||||||
|---|---|---|---|---|---|---|---|
|
Protected band |
Frequency range (MHz) |
Maximum Level (dBm) |
MBW (MHz) |
NOTE |
|||
|
n255 |
NR Band n1, n2, n3, n5, n7, n8, n12, n13, n14, n18, n20, n24, n25, n26, n28, n29, n30, n34, n38, n39, n40, n41, n48, n50, n51, n53, n65, n66, n67, n70, n71, n74, n75, n76, n85, n90, n91, n92, n93, n94 |
FDL_low |
– |
FDL_high |
-50 |
1 |
|
|
NR Band n77, n78, n79 |
FDL_low |
– |
FDL_high |
-50 |
1 |
2 |
|
|
n256 |
NR Band n1, n3, n5, n7, n8, n12, n13, n14, n18, n20, n24, n26, n28, n29, n30, n38, n39, n40, n41, n48, n50, n51, n53, n65, n66, n67, n71, n74, n75, n76, n78, n79, n85, n90, n91, n92, n93, n94, n101 |
FDL_low |
– |
FDL_high |
-50 |
1 |
|
|
E-UTRA Band 33, 35 |
FDL_low |
– |
FDL_high |
-50 |
1 |
||
|
NR Band n77 |
FDL_low |
– |
FDL_high |
-50 |
1 |
2 |
|
|
NR Band n2, n25, n70 |
FDL_low |
– |
FDL_high |
NA |
NA |
3 |
|
|
NOTE 1: The protected NR or E-UTRA bands are specified in clause 5.2 from 3GPP TS 38.101-1 [5] or 3GPP TS 36.101 [10]. FDL_low and FDL_high refer to each frequency band specified in Table 5.2-1 in 3GPP TS 38.101-1 [5] or 3GPP TS 36.101 [10]. NOTE 2: As exceptions, measurements with a level up to the applicable requirements defined in Table 6.5.3.1-2 are permitted for each assigned NR carrier used in the measurement due to 2nd, 3rd, 4th or 5th harmonic spurious emissions. Due to spreading of the harmonic emission the exception is also allowed for the first 1 MHz frequency range immediately outside the harmonic emission on both sides of the harmonic emission. This results in an overall exception interval centred at the harmonic emission of (2 MHz + N x LCRB x RBsize kHz), where N is 2, 3, 4, 5 for the 2nd, 3rd, 4th or 5th harmonic respectively. The exception is allowed if the measurement bandwidth (MBW) totally or partially overlaps the overall exception interval. NOTE 3: The co-existence between n256 and band n2, n25 and n70 is subject to regional/national regulation. |
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6.5.3.3 Additional spurious emissions
6.5.3.3.1 General
These requirements are specified in terms of an additional spectrum emission requirement. Additional spurious emission requirements are signalled by the network to indicate that the UE shall meet an additional requirement for a specific deployment scenario as part of the cell handover/broadcast message.
6.5.3.3.2 Requirement for network signalling value "NS_57N"
When "NS 57N" is indicated in the cell, the power of any UE emission shall not exceed the levels specified in Table 6.5.3.3.2-1. This requirement also applies for the frequency ranges that are less than FOOB (MHz) in Table 6.5.3.1-1 from the edge of the channel bandwidth.
Table 6.5.3.3.2-1: Additional requirements for "NS_57N"
|
Frequency band (MHz) |
Channel bandwidth / Spectrum emission limit1 (dBW) |
Measurement bandwidth |
NOTE |
|
5 MHz, 10 MHz, 15 MHz, 20 MHz |
|||
|
1559≤ f ≤ 1605 |
-80 |
700 Hz |
Averaged over any 2 millisecond active transmission interval |
|
1605≤ f ≤ 1610 |
-80 + 24/5 (f-1605) |
700Hz |
|
|
1559 ≤ f ≤ 1605 |
-70 |
1MHz |
Averaged over any 2 millisecond active transmission interval |
|
1605≤ f ≤ 1610 |
-70 + 24/5 (f-1605) |
1MHz |
|
|
NOTE: The EIRP requirement in regulation is converted to conducted requirement using a 0 dBi antenna. |
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6.5.4 Transmit intermodulation
The transmit intermodulation performance is a measure of the capability of the transmitter to inhibit the generation of signals in its non-linear elements caused by presence of the wanted signal and an interfering signal reaching the transmitter via the antenna.
UE transmit intermodulation is defined by the ratio of the mean power of the wanted signal to the mean power of the intermodulation product when an interfering CW signal is added at a level below the wanted signal at each transmitter antenna port with the other antenna port(s) if any terminated. Both the wanted signal power and the intermodulation product power are measured through NR rectangular filter with measurement bandwidth shown in Table 6.5.4-1.
The requirement of transmit intermodulation is specified in Table 6.5.4-1.
Table 6.5.4-1: Transmit Intermodulation
|
Wanted signal channel bandwidth |
BWChannel |
|
|
Interference signal frequency offset from channel center |
BWChannel |
2*BWChannel |
|
Interference CW signal level |
-40 dBc |
|
|
Intermodulation product |
< -29 dBc |
< -35 dBc |
|
Measurement bandwidth |
The maximum transmission bandwidth configuration among the different SCS’s for the channel BW as defined in Table 6.5.2.4.1-1 |
|
|
Measurement offset from channel center |
BWChannel and 2*BWChannel |
2*BWChannel and 4*BWChannel |