5 LMU radio characteristics

25.1113GPPLocation Measurement Unit (LMU) performance specificationRelease 17TSUser Equipment (UE) positioning in UTRAN

An LMU performs BS receiver functions to obtain reference data for use at a cooperating LMU. The following clause describes the required LMU radio characteristics when performing these functions.

5.1 Frequency bands

a) The LMU is designed to operate in the following bands:

Table 4.1: Frequency bands

Operating Band

UL Frequencies
UE transmit, LMU receive

I

1920 – 1980 MHz

II

1850 -1910 MHz

III

1710-1785 MHz

IV

1710-1755 MHz

V

824 – 849MHz

VI

830-840 MHz

VII

2500 – 2570 MHz

VIII

880 – 915 MHz

IX

1749.9 – 1784.9 MHz

X

1710-1770 MHz

b) Deployment in other frequency bands is not precluded

5.2 Channel arrangement

The channel arrangement shall be as specified in Section 5.4 of [1].

5.3 Reference sensitivity level

Using the reference measurement channel specification in TS 25.104 Annex A [1], the reference sensitivity level and performance of the LMU shall be as specified in Table 4.2.

Table 4.2: LMU reference sensitivity levels

LMU Class

Reference measurement channel data rate

LMU sensitivity level (dBm)

BER

Wide Area LMU

12.2 kbps

-121

BER shall not exceed 0.001

Medium Range LMU

12.2 kbps

-111

BER shall not exceed 0.001

5.4 Dynamic range

Receiver dynamic range is the receiver ability to handle a rise of interference in the reception frequency channel. The receiver shall fulfil a specified BER requirement for a specified sensitivity degradation of the wanted signal in the presence of an interfering AWGN signal in the same reception frequency channel.

The BER shall not exceed 0.001 for the parameters specified in Table 4.3.

Table 4.3: Dynamic range

Parameter

Level Wide Area LMU

Level Medium Range LMU

Unit

Reference measurement channel data rate

12.2

12.2

kbps

Wanted signal mean power

-91

-81

dBm

Interfering AWGN signal

-73

-63

dBm/3.84 MHz

5.5 Adjacent Channel Selectivity (ACS)

Adjacent channel selectivity (ACS) is a measure of the LMU receiver ability to receive a wanted signal at its assigned channel frequency in the presence of an adjacent channel signal at a given frequency offset from the centre frequency of the assigned channel. ACS is the ratio of the LMU receiver filter attenuation on the assigned channel frequency to the receiver filter attenuation on the adjacent channel(s).

The interference signal is offset from the wanted signal by the frequency offset Fuw. The interference signal shall be a W-CDMA signal as specified in Annex C of TS 25.104 [1].

The BER shall not exceed 0.001 for the parameters specified in Table 4.4.

Table 4.4: LMU Adjacent channel selectivity

Parameter

Level Wide Area LMU

Level

Medium Range LMU

Unit

Data rate

12.2

12.2

kbps

Wanted signal mean power

-115

-105

dBm

Interfering signal mean power

-52

-42

dBm

Fuw offset (Modulated)

5

5

MHz

5.6 Blocking characteristics

The blocking characteristics are a measure of the LMU receiver ability to receive a wanted signal at its assigned channel frequency in the presence of an unwanted interferer on frequencies other than those of the adjacent channels. The performance as specified in Table 4.5-4.10 shall be met with a wanted and an interfering signal coupled to the LMU antenna input using the following parameters for the blocking and narrowband blocking requirements:

Table 4.5: Blocking performance requirement for Wide Area LMU

Operating Band

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Minimum Offset of Interfering Signal

Type of Interfering Signal

I

1920 – 1980 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1900 – 1920 MHz

1980 – 2000 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz -1900 MHz

2000 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

II

1850 – 1910 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1830 – 1850 MHz

1910 – 1930 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 1830 MHz

1930 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

III

1710 – 1785 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1785 – 1805 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1805 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

IV

1710 – 1755 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1755 – 1775 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1775 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

V

824-849 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

804-824 MHz

849-869 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 804 MHz

869 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

VI

810 – 830 MHz

840 – 860 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 810 MHz

860 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

VII

2500 – 2570 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

2480 – 2500 MHz

2570 – 2590 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz -2480 MHz

2590 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

VIII

880 – 915 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

860 – 880 MHz

915 – 925 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz -860 MHz

925 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

IX

1749.9 – 1784.9 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1729.9 – 1749.9 MHz

1784.9 – 1804.9 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 1729.9 MHz

1804.9 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

X

1710 – 1770 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1770 – 1790 MHz

-40 dBm

-115 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1790 MHz – 12750 MHz

-15 dBm

-115 dBm

CW carrier

NOTE *: The characteristics of the W-CDMA interference signal are specified in Annex C of [1]

Table 4.6: Blocking performance requirement for the Medium range LMU

Operating Band

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Minimum Offset of Interfering Signal

Type of Interfering Signal

I

1920 – 1980 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1900 – 1920 MHz

1980 – 2000 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz -1900 MHz

2000 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

II

1850 – 1910 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1830 – 1850 MHz

1910 – 1930 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 1830 MHz

1930 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

III

1710 – 1785 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1785 – 1805 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1805 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

IV

1710 – 1755 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1755 – 1775 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1775 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

V

824-849 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

804-824 MHz

849-869 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 804 MHz

869 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

VI

810 – 830 MHz

840 – 860 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 810 MHz

860 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

VII

2500 – 2570 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

2480 – 2500 MHz

2570 – 2590 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz -2480 MHz

2590 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

VIII

880 – 915 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

860 – 880 MHz

915 – 925 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz -860 MHz

925 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

IX

1749.9 – 1784.9 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1729.9 – 1749.9 MHz

1784.9 – 1804.9 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 1729.9 MHz

1804.9 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

X

1710 – 1770 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1690 – 1710 MHz

1770 – 1790 MHz

-35 dBm

-105 dBm

10 MHz

WCDMA signal *

1 MHz – 1690 MHz

1790 MHz – 12750 MHz

-15 dBm

-105 dBm

CW carrier

NOTE *: The characteristics of the W-CDMA interference signal are specified in Annex C of [1]

Table 4.7: Blocking performance requirement (narrowband) for the Wide Area LMU

Operating Band

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Minimum Offset of Interfering Signal

Type of Interfering Signal

II

1850 – 1910 MHz

– 47 dBm

-115 dBm

2.7 MHz

GMSK modulated*

III

1710 – 1785 MHz

– 47 dBm

-115 dBm

2.8 MHz

GMSK modulated*

IV

1710 – 1755 MHz

– 47 dBm

-115 dBm

2.7 MHz

GMSK modulated*

V

824 – 849 MHz

– 47 dBm

-115 dBm

2.7 MHz

GMSK modulated*

VIII

880 – 915 MHz

– 47 dBm

-115 dBm

2.8 MHz

GMSK modulated*

X

1710 – 1770 MHz

– 47 dBm

-115 dBm

2.7 MHz

GMSK modulated*

NOTE *: GMSK modulation as defined in TS 45.004 [2].

Table 4.8: Narrowband blocking performance requirement for the Medium Range LMU

Operating Band

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Minimum Offset of Interfering Signal

Type of Interfering Signal

II

1850 – 1910 MHz

– 42 dBm

-105 dBm

2.7 MHz

GMSK modulated*

III

1710 – 1785 MHz

– 42 dBm

-105 dBm

2.8 MHz

GMSK modulated*

IV

1710 – 1755 MHz

– 42 dBm

-105 dBm

2.7 MHz

GMSK modulated*

V

824 – 849 MHz

– 42 dBm

-105 dBm

2.7 MHz

GMSK modulated*

VIII

880 – 915 MHz

– 42 dBm

-105 dBm

2.8 MHz

GMSK modulated*

X

1710 – 1770 MHz

– 42 dBm

-105 dBm

2.7 MHz

GMSK modulated*

NOTE *: GMSK modulation as defined in TS 45.004 [2].

Additional blocking requirements shall be applied for the protection of the LMU receiver in the presence of GSM900, DCS1800, PCS1900, GSM850, UTRA TDD, and UTRA FDD in bands I to X.

Table 4.9: Additional blocking performance requirement for Wide Area LMU.

Co-located BS type

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Type of Interfering Signal

Macro GSM900

921 – 960 MHz

+16 dBm

-115 dBm

CW carrier

Macro DCS1800

1805 – 1880 MHz

+16 dBm

-115 dBm

CW carrier

Macro PCS1900

1930 – 1990 MHz

+16 dBm

-115 dBm

CW carrier

Macro GSM850

869 – 894 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band I

2110 – 2170 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band II

1930 – 1990 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band III

1805 – 1880 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band IV

2110 – 2155 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band V

869 – 894 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band VI

875 – 885 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band VII

2620 – 2690 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band VIII

925 – 960 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band IX

1844.9 – 1879.9 MHz

+16 dBm

-115 dBm

CW carrier

WA UTRA-FDD Band X

2110 – 2170 MHz

+16 dBm

-115 dBm

CW carrier

Table 4.10: Additional blocking performance requirements for the LMU

Co-located BS type

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Type of Interfering Signal

Micro GSM900

921 – 960 MHz

-3 dBm

-105 dBm

CW carrier

Micro DCS1800

1805 – 1880 MHz

+5 dBm

-105 dBm

CW carrier

Micro PCS1900

1930 – 1990 MHz

+5 dBm

-105 dBm

CW carrier

Micro GSM850

869 – 894 MHz

-3 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band I

2110 – 2170 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band II

1930 – 1990 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band III

1805 – 1880 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band IV

2110 – 2155 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band V

869 – 894 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band VI

875 – 885 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band VII

2620 – 2690 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band VIII

925 – 960 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band IX

1844.9 – 1879.9 MHz

+8 dBm

-105 dBm

CW carrier

MR UTRA-FDD Band X

2110 – 2170 MHz

+8 dBm

-105 dBm

CW carrier

An additional blocking requirement may be applied for the protection of the LMU receivers when UTRA TDD is co-located with an LMU.

The current state-of-the-art technology does not allow a single generic solution for co-location with UTRA-TDD on adjacent frequencies for 30dB BS-BS minimum coupling loss.

However, there are certain site-engineering solutions that can be used in these cases. These techniques are addressed in TR 25.942 [4].

For an LMU, the static reference performance as specified in clause 5.3 should be met with a wanted and an interfering signal coupled to BS antenna input using the parameters in Table 4.11.

Table 4.11: Blocking performance requirement for a Wide Area LMU when co-located with UTRA TDD BS in other bands.

Co-located BS type

Center Frequency of Interfering Signal

Interfering Signal mean power

Wanted Signal mean power

Type of Interfering Signal

Wide Area TDD

2585 – 2620 MHz

+16 dBm

-115 dBm

CW carrier

5.7 Intermodulation characteristics

Third and higher order mixing of the two interfering RF signals can produce an interfering signal in the band of the desired channel. Intermodulation response rejection is a measure of the capability of the receiver to receive a wanted signal on its assigned channel frequency in the presence of two or more interfering signals which have a specific frequency relationship to the wanted signal.

The static reference performance as specified in clause 5.3 shall be met for a LMU when the following signals are coupled to LMU antenna input:

– A wanted signal at the assigned channel frequency with a mean power of ‑115 dBm.

– Two interfering signals with the following parameters.

Table 4.12: Intermodulation performance requirement (Wide Area LMU)

Operating band

Interfering Signal mean power

Offset

Type of Interfering Signal

All bands

– 48 dBm

10 MHz

CW signal

– 48 dBm

20 MHz

WCDMA signal *

Note*: The characteristics of the W-CDMA interference signal are specified in Annex C of [1]

Table 4.13: Narrowband intermodulation performance requirement (Wide Area LMU)

Operating band

Interfering Signal mean power

Offset

Type of Interfering Signal

II, III, IV, V, VIII, X

– 47 dBm

3.5 MHz

CW signal

– 47 dBm

5.9 MHz

GMSK modulated*

* GMSK as defined in TS45.004 [2]

The static reference performance as specified in clause 5.3 shall be met for a Medium Range LMU when the following signals are coupled to LMU antenna input:

– A wanted signal at the assigned channel frequency with a mean power of ‑105 dBm.

– Two interfering signals with the following parameters.

Table 4.14: Intermodulation performance requirement (Medium Range LMU)

Operating band

Interfering Signal mean power

Offset

Type of Interfering Signal

All bands

– 44 dBm

10 MHz

CW signal

– 44 dBm

20 MHz

WCDMA signal *

Note*: The characteristics of the W-CDMA interference signal are specified in Annex C of [1]

Table 4.15: Narrowband intermodulation performance requirement (Medium Range LMU)

Operating band

Interfering Signal mean power

Offset

Type of Interfering Signal

II, III, IV, V, VIII, X

– 43 dBm

3.5 MHz

CW signal

– 43 dBm

5.9 MHz

GMSK modulated*

* GMSK as defined in TS45.004 [2]

5.8 Spurious emissions

The spurious emissions power is the power of emissions generated or amplified in a receiver that appear at the LMU antenna connector.

The power of any spurious emission shall not exceed:

Table 4.16: General LMU spurious emission requirement

Band

Maximum level

Measurement Bandwidth

Note

30MHz – 1 GHz

-57 dBm

100 kHz

1 GHz – 12.75 GHz

-47 dBm

1 MHz

With the exception of frequencies between 12.5 MHz below the first carrier frequency and 12.5 MHz above the last carrier frequency used by the LMU.

In addition the following requirements shall be applied for the protection of UE, MS, and Node B, BS of the same and other systems, where the power of any spurious emission shall not exceed the limits:

Table 4.17: Additional LMU Spurious emissions limits

Operating Band

Band

Maximum level

Measurement Bandwidth

Note

I

1920 – 1980 MHz

-78 dBm

3.84 MHz

II

1850 – 1910 MHz

-78 dBm

3.84 MHz

III

1710 – 1785 MHz

-78 dBm

3.84 MHz

IV

1710 – 1755 MHz

-78 dBm

3.84 MHz

V

824 – 849 MHz

-78 dBm

3.84 MHz

VI

815 – 850 MHz

-78 dBm

3.84 MHz

VII

2500 – 2570 MHz

-78 dBm

3.84 MHz

VIII

880 – 915 MHz

-78 dBm

3.84 MHz

IX

1749.9 – 1784.9 MHz

-78 dBm

3.84 MHz

X

1710 – 1770 MHz

-78 dBm

3.84 MHz

In addition, the requirement in Table 4.18 may be applied to geographic areas in which both UTRA-TDD and UTRA-FDD are deployed.

Table 4.18: Additional spurious emission requirements for the TDD bands

Operating Band

Band

Maximum level

Measurement Bandwidth

Note

I

1900 – 1920 MHz

2010 – 2025 MHz

-78 dBm

3.84 MHz

Not applicable in Japan

2010 – 2025 MHz

-52 dBm

1MHz

Applicable in Japan

VI, IX

2010 – 2025 MHz

-52 dBm

1MHz