Set command

Syntax:

%XSNRSQ=<n>

Notification syntax:

%XSNRSQ: <snr>,<threshold_index>,<srxlev>,<ce_level>

The parameters and their defined values are the following:

<n>

0 – Unsubscribe SNR signal quality notifications

1 – Subscribe SNR signal quality notifications

<snr>

0 – SNR < −24 dB

1 – When −24 dB ≤ SNR < −23 dB

2 – When −23 dB ≤ SNR < −22 dB

...

47 – When 22 dB ≤ SNR < 23 dB

48 – When 23 dB ≤ SNR < 24 dB

49 – When 24 dB ≤ SNR

127 – Not known or not detectable

The index value of SNR can be converted to decibel with the following formula: Index – 24 = dB. For example, 1 – 24 = –23 dB and 47 – 24 = 23 dB.

<threshold_index>

The index of the SNR threshold which is below the measured SNR value.

0 – SNR is below the first threshold

1 – SNR is between the first and second threshold

2 – SNR is between the second and third threshold

3 – SNR is between the third and fourth threshold

4 – SNR is above the fourth threshold

With default thresholds 16, 24, 32, and 40, the measured value 35 leads to index 3.

<srxlev>

0 – SRXLEV –127 or below –127

1 to 254 – SRXLEV –126 to 127

255 – SRXLEV above 127

32767 – Invalid or not know

<ce_level>

0 – CE Level 0. Normal coverage.

1 – CE Level 1. Enhanced coverage, according to LTE cell access criteria specified in 3GPP TS 36.304.

255 – Invalid or not known

The following command example subscribes Evolved Universal Terrestrial Radio Access (E-UTRA) signal quality notifications:

AT%XSNRSQ=1
OK

The following notification example indicates that the measured average SNR has changed to 39 and is mapped to threshold 3:

%XSNRSQ: 39,3,130,1