MR1100 Loses Carrier Aggregation

Dear JohnPeng , problem is still there.

The provider confirmed that they switch off Carrier Aggregation due to power saving reasons. Also providers in Germany (T-Mobile and Vodafone) are testing this behaviour. For mobile phones it does not matter (because they reconnect to CA if needed). But the MR1100 does not reconnect back to carrier aggregation and stays on the first band.

In the meantime I wrote a small bash script which checks if CA is still connected. If not, then I switches bands to have CA again. I let it run on an hourly basis.

Can you help us? Running this script is not a permanent solution.

#!/bin/bash

# Get status of MR1100 via telnet
# Save the results in the variable output1
output1=$(( echo open 192.168.1.1 5510
sleep 1;
echo "at!gstatus?";
sleep 1;
echo "exit" ) | telnet )

echo $output1

# Match the results of at!gstatus with the expected connection pattern
# In this case check if twice connected to B3
# If yes then exit this script
if [[ "${output1}" =~ B3(.|\n)*B3 ]]; then
    echo "matched - all good"
    exit 0
fi

sleep 3;

# Connection pattern is not in line with expected behaviour
# First check which band is currently selected
# We switch here between band=00 --> auto and the band=03
# Define variable to select the custom band
band_selector="03"

# Check which band we are connected to right now
output2=$(( echo open 192.168.1.1 5510
sleep 1;
echo "at!band?";
sleep 1;
echo "exit" ) | telnet)

echo $output2

# Band 3 has the custom name LTE B3. In case band=03 is connected switch over to AUTO
# and vice-versa
if [[ "${output2}" =~ LTE[[:blank:]]B3 ]]; then
    band_selector="00"
    echo "B3 - switche auf AUTO"
fi

sleep 3;

# Now switch the band to the opposite
# Means if band=03 then switch to band=00 and vice-versa
output3=$(( echo open 192.168.1.1 5510
sleep 1;
echo "AT!BAND=$band_selector";
sleep 5;
echo "at!gstatus?";
sleep 2;
echo "exit" ) | telnet)

echo $output3

# Send the results pers mail

/usr/sbin/ssmtp your-email-addr@gmx.net <<EOM
Subject:Status MR1100 aktualisiert
$output1
******************************
$output2
******************************
$output3
EOM
exit 1