Chateau LTE12 RSRP flapping

RouterOS Wireless Networking
1

Hello,

I just installed Chateau LTE12 router and trying to find the best location for it.

Previously I was using RB912UAG + R11e-LTE + 2,5m cable + mANT_LTE_5 on the roof and the speed was about 70/30MB.
The BTS is visible from my location and the distance is 1.8 km without obstacles .

         manufacturer: "MikroTik"
                model: "R11e-LTE"
               earfcn: 1300 (band 3, bandwidth 20Mhz)
           phy-cellid: 464
                 rsrp: -78dBm
                 rsrq: -8dB
                 sinr: 18dB
                  cqi: 15

When I run Chateau at ground floor level the transfer is about 70MB/9MB with really poor signal and in the same place my iPhone has 4MB DL.

/interface lte monitor lte1
            status: connected
             model: EG12-EA
          revision: EG12EAPAR01A10M4G
  current-operator: Plus
      primary-band: B7@20Mhz earfcn: 2850 phy-cellid: 61
           ca-band: B3@20Mhz earfcn: 1300 phy-cellid: 464,B8@5Mhz earfcn: 3526 
                    phy-cellid: 322
               cqi: 4
                ri: 2
               mcs: 0
              rssi: -75dBm
              rsrp: -108dBm
              rsrq: -12dB
              sinr: 12dB

Then on the roof level the upload is 2x better (20MB) but the download is terrible 10MB. At the same place my phone can reach ~100MB.

           status: connected
             model: EG12-EA
          revision: EG12EAPAR01A10M4G
  current-operator: Plus
      primary-band: B7@20Mhz earfcn: 2850 phy-cellid: 61
           ca-band: B3@20Mhz earfcn: 1300 phy-cellid: 464,B8@5Mhz earfcn: 3526 
                    phy-cellid: 322
               cqi: 15
                ri: 2
               mcs: 1
              rssi: -57dBm
              rsrp: -89dBm
              rsrq: -12dB
              sinr: 16dB

The firmware:

model: D53G-5HacD2HnD
     firmware-type: ipq4000L
  factory-firmware: 7.0.2
  current-firmware: 7.0.2
  upgrade-firmware: 7.0.2

I also tried the cell lock but it didn’t change anything.

/interface/lte/at-chat lte1 input="at+qnwlock=\"common/4g\",3,2850,61,1300,464,3526,322"

My idea is to connect Chateau with new directional antenna on the roof via 3m cable (like R11e-LTE) but I’m not sure if it will work. The question is - why the download is so weak in the place where signal parameters are better.

Thanks in advance.

2

I checked the RSRP level and looks like the EG12 DRX param is flapping when the signal has better values.

08:15:15 lte,async,raw lte1: rcvd +QRSRP: -88,-95,-140,-140 
08:15:19 lte,async,raw lte1: rcvd +QRSRP: -89,-97,-140,-140 
08:15:23 lte,async,raw lte1: rcvd +QRSRP: -88,-97,-140,-140 
08:15:27 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:15:31 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:15:34 lte,async,raw lte1: rcvd +QRSRP: -88,-96,-140,-140 
08:15:37 lte,async,raw lte1: rcvd +QRSRP: -89,-95,-140,-140 
08:15:41 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:15:45 lte,async,raw lte1: rcvd +QRSRP: -89,-97,-140,-140 
08:15:49 lte,async,raw lte1: rcvd +QRSRP: -89,-96,-140,-140 
08:15:53 lte,async,raw lte1: rcvd +QRSRP: -89,-98,-140,-140 
08:15:57 lte,async,raw lte1: rcvd +QRSRP: -88,-96,-140,-140 
08:16:01 lte,async,raw lte1: rcvd +QRSRP: -89,-96,-140,-140 
08:16:05 lte,async,raw lte1: rcvd +QRSRP: -89,-97,-140,-140 
08:16:09 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:16:12 lte,async,raw lte1: rcvd +QRSRP: -88,-94,-140,-140 
08:16:15 lte,async,raw lte1: rcvd +QRSRP: -88,-95,-140,-140 
08:16:18 lte,async,raw lte1: rcvd +QRSRP: -88,-95,-140,-140 
08:16:21 lte,async,raw lte1: rcvd +QRSRP: -89,-96,-140,-140 
08:16:25 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:16:29 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:16:33 lte,async,raw lte1: rcvd +QRSRP: -88,-140,-140,-140 
08:16:36 lte,async,raw lte1: rcvd +QRSRP: -88,-96,-140,-140 
08:16:39 lte,async,raw lte1: rcvd +QRSRP: -88,-95,-140,-140 
08:16:43 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:16:47 lte,async,raw lte1: rcvd +QRSRP: -89,-100,-140,-140 
08:16:51 lte,async,raw lte1: rcvd +QRSRP: -88,-140,-140,-140 
08:16:55 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:16:59 lte,async,raw lte1: rcvd +QRSRP: -88,-140,-140,-140 
08:17:02 lte,async,raw lte1: rcvd +QRSRP: -88,-96,-140,-140 
08:17:06 lte,async,raw lte1: rcvd +QRSRP: -89,-100,-140,-140 
08:17:10 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:17:14 lte,async,raw lte1: rcvd +QRSRP: -89,-100,-140,-140 
08:17:18 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:17:22 lte,async,raw lte1: rcvd +QRSRP: -88,-96,-140,-140 
08:17:26 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140 
08:17:29 lte,async,raw lte1: rcvd +QRSRP: -89,-98,-140,-140 
08:17:32 lte,async,raw lte1: rcvd +QRSRP: -88,-95,-140,-140 
08:17:36 lte,async,raw lte1: rcvd +QRSRP: -89,-95,-140,-140 
08:17:39 lte,async,raw lte1: rcvd +QRSRP: -89,-95,-140,-140 
08:17:43 lte,async,raw lte1: rcvd +QRSRP: -89,-95,-140,-140 
08:17:46 lte,async,raw lte1: rcvd +QRSRP: -89,-95,-140,-140 
08:17:50 lte,async,raw lte1: rcvd +QRSRP: -88,-140,-140,-140 
08:17:54 lte,async,raw lte1: rcvd +QRSRP: -88,-140,-140,-140 
08:17:58 lte,async,raw lte1: rcvd +QRSRP: -89,-140,-140,-140

Poor signal at ground level - stable DRX

11:07:32 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:07:36 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:07:40 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:07:43 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:07:47 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:07:51 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:07:55 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:07:59 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:03 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:08:07 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:08:11 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:15 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:19 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:08:23 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:08:27 lte,async,raw lte1: rcvd +QRSRP: -106,-104,-140,-140 
11:08:30 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:08:35 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:38 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:42 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:46 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:08:50 lte,async,raw lte1: rcvd +QRSRP: -108,-105,-140,-140 
11:08:54 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:08:58 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:09:02 lte,async,raw lte1: rcvd +QRSRP: -108,-106,-140,-140 
11:09:06 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:09:10 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:09:14 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:09:18 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:09:22 lte,async,raw lte1: rcvd +QRSRP: -106,-105,-140,-140 
11:09:26 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:09:29 lte,async,raw lte1: rcvd +QRSRP: -107,-106,-140,-140 
11:09:33 lte,async,raw lte1: rcvd +QRSRP: -108,-106,-140,-140 
11:09:37 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:09:41 lte,async,raw lte1: rcvd +QRSRP: -107,-105,-140,-140 
11:09:45 lte,async,raw lte1: rcvd +QRSRP: -108,-106,-140,-140 
11:09:49 lte,async,raw lte1: rcvd +QRSRP: -108,-105,-140,-140

Is there any way to solve this problem ?