A9.1 BLOCKING LEVELS IN 3GPP AND ETSI SPECIFICATIONS
- Former user (Deleted)
SINR, ACS, blocking levels or intermodulation thresholds are defined by 3GPP/ETSI for a given desensitisation. These values are used for compliance testing to the specifications.
As an example, in GSM, tests related to blocking are performed with a desensitisation of 20 dB for the two first adjacent channels, and of 3 dB for the following channels. In UMTS and LTE, the following table applies.
Table 69: Desensitisation considered for testing ACS and blocking levels
| 1st adjacent | Following adjacent | Adjacent narrowband |
UMTS BS | 6 dB | 6 dB | 6 dB |
LTE BS | 6 dB | 6 dB | 6 dB |
UMTS UE | 14 dB | 3 dB | 10 dB |
LTE UE | 14 dB | 6 to 9 dB[1] | 13 to 16 dB6 |
It can be noted that the desensitisation considered for testing varies with the frequency offset, while the network is designed for a specific value. In section 7.5.1 of 3GPP TS 25 101 [5] and TS 36 101 [1] related to the UE, the desensitisation value is explicitly mentioned as a testing parameter.
[1] Depending on the LTE channel width