6.2 Reference sensitivity level

05.053GPPRadio transmission and receptionTS

The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever appropriate) is specified in table 1, according to the type of channel and the propagation condition. . The performance requirements for GSM 400 systems are as for GSM 900 in table 1, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100.

NOTE: For conformance testing purposes using requirements at double speed is considered sufficient to verify MS behaviour at realistic speeds. This applies for packet channels and reference interference performance as well.

The actual sensitivity level is defined as the input level for which this performance is met. The actual sensitivity level shall be less than a specified limit, called the reference sensitivity level. The reference sensitivity level shall be:

GSM 400 MS

for GSM 400 small MS

‑102 dBm

for other GSM 400 MS

‑104 dBm

GSM 400 BTS

for normal BTS

‑104 dBm

GSM 900 MS

for GSM 900 small MS

‑102 dBm

for other GSM 900 MS

‑104 dBm

GSM 850 MS

for GSM 850 small MS

‑102 dBm

for other GSM 850 MS

‑104 dBm

DCS 1 800 MS

for DCS 1 800 class 1 or class 2 MS

‑100 / ‑102 dBm *

for DCS 1 800 class 3 MS

‑102 dBm

PCS 1 900 MS

for PCS 1 900 class 1 or class 2 MS

‑102 dBm

for other PCS 1 900 MS

‑104 dBm

GSM 900 BTS, GSM 850 BTS and MXM 850

for normal BTS

‑104 dBm

for micro BTS M1

‑97 dBm

for micro BTS M2

‑92 dBm

for micro BTS M3

‑87 dBm

for pico BTS P1

‑88 dBm

DCS 1 800 BTS

for normal BTS

‑104 dBm

for micro BTS M1

‑102 dBm

for micro BTS M2

‑97 dBm

for micro BTS M3

‑92 dBm

for pico BTS P1

‑95 dBm

PCS 1 900 BTS and MXM 1900

for normal BTS

‑104 dBm

for micro BTS M1

‑102 dBm

for micro BTS M2

‑97 dBm

for micro BTS M3

‑92 dBm

for pico BTS P1

‑95 dBm

* For all DCS 1 800 class 1 and class 2 MS to be type approved after 1st December 1999, the ‑102 dBm level shall apply for the reference sensitivity performance as specified in table 1 for the normal conditions defined in Annex D and ‑100 dBm level shall be used to determine all other MS performances.

For Enhanced circuit-switched channels (ECSD), the minimum input signal level for which the reference performance shall be met is specified in table 1d and 1e, according to the modulation, type of channel and the propagation condition. The performance requirements for GSM 400 systems are as for GSM 900 in table 1d and 1e, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100.

The reference performance shall be:

for data channels (E-TCH/F), transparent services (T)

BER £ 0,1%

for data channels (E-TCH/F), non-transparent services (NT))

BLER £ 10%

for fast associated control channel (E-FACCH)

FER £ 5%

where BLER refers to radio block (data block of 20 ms length, corresponding to 1368 coded bits, to be interleaved over a number of burst according to 05.03).

The levels are given for normal BTS and MS separately. For other equipment, the levels shall be corrected by the values below in the table for packet switched channels.

For packet switched channels, the minimum input signal level for which the reference performance shall be met is specified in table 1a for GMSK modulated input signals, and tables 1b and 1c for 8-PSK modulated input signals respectively, according to the type of channel and the propagation condition. The performance requirements for GSM 400 systems are as for GSM 900 in table 1a, 1b and 1c, except that the GSM 400 MS speed is doubled from that of GSM 900, e.g. TU50 becomes TU100. The levels are given for normal BTS for GMSK modulated signals. For 8-PSK modulated signals, the required levels are given for normal BTS and MS separately. The levels shall be corrected by the following values:

MS, GMSK modulated signals

for DCS 1 800 class 1 or class 2 MS

+2/+4 dB**

for DCS 1 800 class 3 MS

+2 dB

for GSM 400 small MS, GSM 900 small MS and GSM 850 small MS

+2 dB

for other GSM 400, GSM 900 MS and GSM 850 MS

0 dB

for PCS 1900 class 1 or class 2 MS

+2 dB

for other PCS 1900 MS

0 dB

MS, 8-PSK modulated signals

for GSM 400, GSM 900 and GSM 850 small MS

0 dB

for other GSM 400, GSM 900 and GSM 850 MS

-2 dB

for DCS 1 800 and PCS 1900 class 1 or class 2 MS

0 dB

for other DCS 1 800 and PCS 1900 MS

-2 dB

BTS

for normal BTS

0 dB

for GSM 900, GSM 850 and MXM 850 micro BTS M1

+7 dB

for GSM 900, GSM 850 and MXM 850 micro BTS M2

+12 dB

for GSM 900, GSM 850 and MXM 850 micro BTS M3

+17 dB

for GSM 900, GSM 850 and MXM 850 pico BTS P1

+16 dB

for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M1

+2 dB

for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M2

+7 dB

for DCS 1 800, PCS 1900 and MXM 1900 micro BTS M3

+12 dB

for DCS 1 800, PCS 1900 and MXM 1900 pico BTS P1

+9 dB

** For all DCS 1 800 class 1 and class 2 MS, a correction offset of +2dB shall apply for the reference sensitivity performance as specified in table 1a for the normal conditions defined in Annex D and an offset of +4 dB shall be used to determine all other MS performances.

The reference performance shall be:

for packet data channels (PDCH)

BLER £ 10%

for uplink state flags (USF)

BLER £ 1%

for packet random access channels (PRACH),

BLER £ 15%

where BLER is the Block Error Rate, referring to all erroneously decoded data blocks including any headers, stealing flags, parity bits as well as any implicit information in the training sequence. For PDCH the BLER refers to RLC blocks, and hence there can be up to two block errors per 20ms radio block for EGPRS MCS7, MCS8 and MCS9. For USF, the BLER only refers to the USF value.

For 8-PSK modulated PDCH channels, the performance requirements for some coding schemes and propagation conditions are specified at higher BLER. Where applicable, the BLER value noted in table 1b and 1c applies.

The reference sensitivity performance specified above need not be met in the following cases:

– for BTS if the received level on either of the two adjacent timeslots to the wanted exceed the wanted timeslot reference sensitivity level by more than 50 dB;

– for MS at the static channel, if the received level on either of the two adjacent timeslots to the wanted exceed the wanted timeslot reference sensitivity level by more than 20 dB;

– for MS on a multislot configuration, if the received level on any of the timeslots belonging to the same multislot configuration as the wanted time slot, exceed the wanted time slot by more than 6 dB.

The interfering adjacent time slots shall be static with valid GSM GMSK signals in all cases. The reference sensitivity levels, specified above for circuit-switched, GMSK-modulated channels, apply to 8-PSK as well.

The requirements for micro-BTS for 8-PSK modulated input signals in the tables above, assume the same maximum output power in GMSK and 8-PSK. For other maximum output power levels, the sensitivity is adjusted accordingly.

The pico-BTS 900 MHz, 1800 MHz, 1900 MHz and 850 MHz shall meet the reference sensitivity performance specified for the static channel. The only other channel that is specified is the TI5 propagation condition and this need only be tested for the no FH case. The performance requirement for GSM 900, GSM 850, DCS 1 800, PCS 1900, MXM 850 and MXM 1900 pico-BTS with the TI5 propagation condition is the same as the TU50 performance requirement for GSM 900. The level of input signal at which this requirement shall be met is 3dB above the level specified above in this sub-clause (in combination with Table 1a and 1b for packet service) , for GMSK modulated signals, and 3 dB for 8-PSK modulated signals.