UMTS/HSPA Module Series
WCDMA Jamming Detection Application Note
WCDMA_Jamming_Detection_Application_Note Confidential / Released 6 / 13
2.1.1. Report Jamming Status via URC
After Jamming Detection function is enabled by
AT+QJDR=1
, and URC output is enabled by command
AT+QJDCFG=“URC”,1
. The Jamming Detection function can work well with the default settings. If
jamming is detected, the module will report “
+QJDR: JAMMED
” through URC port. If jamming is removed,
the module will report “
+QJDR:
NOJAMMING
” through URC port. If URC of this function is not reported,
query whether the jamming status
is available
or not by “
AT+QJDR?
”. For detailed details, please refer to
Chapter 4.1.
2.1.2. Report Jamming Status via URC Periodically
There are two ways to report URC for indicating jamming status. One is reporting URC only once as
described in section 2.1.1; the other is reporting URCs periodically. Firstly, enable the Jamming Detection
function of Quectel module by
AT+QJDR=1
and
AT+QJDCFG=“URC”,1
, and then set the
<period>
by
AT+QJDCFG
. If jamming is detected, the module will report a URC
“
+QJDR: JAMMED
”
through URC
port every
<period>
seconds.
If jamming is removed, the module will report “
+QJDR: NOJAMMING
”
through URC port. For more details, please refer to Chapter 4.2.
2.2. Configure Optimized Detection Parameters
Quectel Jamming Detection supports to optimize the detection conditions by configuring
<mnl>
and other
parameters of
AT+QJDCFG
. To detect and report the jamming, some basic conditions are verified.
Quectel
Confidential
