This Article Applies to:

Deco 4G/5G routers

When you go to Deco APP>More>Internet, at the bottom of the Internet status, you might find an extra option "Additional Information". After clicking it, there are several entries of "AT+QENG" and "AT+QCAINFO" responses. What did these details represent?
This article will help you understand more about these two commands and learn how to check the current carrier aggregation status on the Deco 4G/5G routers.

AT+QENG="servingcell" - The command displays parameters of the serving cell.

The response to the command is given in LTE mode:
+QENG:"servingcell",<state>,"LTE",<is_tdd>,<mcc>,<mnc>,<cellid>,<pcid>,<earfcn>,<freq_band_ind>,<ul_bandwidth>,<dl_bandwidth>,<tac>,<rsrp>,<rsrq>,<rssi>,<sinr>,<srxlev>

Take the following as an example:

We can pay our attention to the following most important parameters: <pcid> = 245 (cell physical identifier); <earfcn>=1750 (frequency code); <rssi> = -59 dBm (signal level); <sinr> = 16dB (signal-to-noise ratio)
Actually, these details have also been listed in the "Internet Status"

AT+QCAINFO queries carrier aggregation parameters. PCC and SCC, respectively, indicate Primary Carrier Component and Secondary Carrier Component.

The response to the command is given:
+QCAINFO:"PCC",<freq>,<bandwidth>,<band>,<pcell_state>,<pcid>,<rsrp>,<rsrq>,<rssi>,<sinr>
+QCAINFO:"SCC",<freq>,<bandwidth>,<band>,<pcell_state>,<pcid>,<rsrp>,<rsrq>,<rssi>,<sinr>
[.......]

Take the following responses as an example:

The ISP uses 5G NSA service network, and the current 5G carrier aggregation band combinations are DC_3A-7A-20A_n78A.