All wireless network going to hang plz help me out

RouterOS Wireless Networking
1

0 wlan2 94:0C:6D:BB:F0:78 no -70dBm@36Mbps 36Mbps 13h47m24s
1 wlan2 54:E6:FC:FB:D0:38 no -57dBm@54Mbps 54Mbps 12h20m52s
2 wlan2 B0:48:7A:95:2C:D2 no -61dBm@1Mbps 54Mbps 2h44m1s
3 wlan2 74:EA:3A:E0:00:5B no -85dBm@5.5Mbps 18Mbps 2h23m28s
4 wlan2 D8:5D:4C:96:63:44 no -77dBm@1Mbps 48Mbps 1h38m29s
5 wlan2 F4:EC:38:8D:2A:96 no -84dBm@18Mbps 24Mbps 1h3m6s
6 wlan2 D8:5D:4C:D7:EA:04 no -80dBm@9Mbps 36Mbps 46m56s
7 wlan2 F4:EC:38:95:64:FA no -73dBm@48Mbps 54Mbps 37m21s
8 wlan2 94:0C:6D:BF:66:36 no -76dBm@1Mbps 5.5M… 34m3s
9 wlan2 74:EA:3A:E0:04:65 no -77dBm@1Mbps 1Mbp… 32m53s
10 wlan2 F4:EC:38:A9:AB:83 no -75dBm@48Mbps 54Mbps 18m3s
11 wlan2 94:0C:6D:BF:7F:19 no -75dBm@11Mbps 24Mbps 13m53s
12 wlan2 B0:48:7A:95:00:71 no -81dBm@18Mbps 36Mbps 9m54s
13 wlan2 D8:5D:4C:8F:36:EE no -80dBm@1Mbps 36Mbps 8m22s
14 wlan2 F4:EC:38:E7:19:04 no -62dBm@1Mbps 54Mbps 6m18s
15 wlan2 D8:5D:4C:D7:E7:E8 no -84dBm@9Mbps 36Mbps 4m18s
16 wlan2 74:EA:3A:E0:08:C4 no -77dBm@1Mbps 11Mb… 4m16s
17 wlan2 94:0C:6D:BF:6F:CC no -73dBm@1Mbps 11Mb… 2m47s

here above is my day time wireless table print details
My English is not too good
But I m trying to explain
I m having a serious problem in RB411AR (using wireless bridge only) & RB750 as Gateway & mini pci R52H AP Bridge
Well this is my configuration touch
I m using ppp server authentication
On RB750 192.168.7.1 is DHCP server
Port no 1,2,3,4 is running on load balancing for wan & Port no 5 is configured as bridge LAN
I have lots of users majority is on wireless interface
& on RB411AR is only in bridge for wireless users
Normally DHCP (192.168.7.1) server ping is 1ms to 8ms & this time every one got excellent connectivity
The problem is
When about 31 users are come online via wireless (RB411AR) at night there is no ping break to DHCP server
But when time going to 8:00PM at this time at night I have 28 users online approximately & suddenly my ping to DHCP server is going to much high 1500ms,2800ms,3900ms & one by one all users are going to disconnected
& also my AP P throughput rate is fall down to 900Kb/s or 25Kb/s
During this problem here is wireless table details

0 wlan2 94:0C:6D:BB:F0:78 no -70dBm@36Mbps 1Mbps 7m24s
1 wlan2 54:E6:FC:FB:D0:38 no -57dBm@54Mbps 1Mbps 2m52s
2 wlan2 B0:48:7A:95:2C:D2 no -61dBm@1Mbps 1Mbps 2h44m1s
3 wlan2 74:EA:3A:E0:00:5B no -85dBm@5.5Mbps 1Mbps 23m28s
4 wlan2 D8:5D:4C:96:63:44 no -77dBm@1Mbps 1Mbps 1h38m29s
5 wlan2 F4:EC:38:8D:2A:96 no -84dBm@18Mbps 1Mbps 1h3m6s
6 wlan2 D8:5D:4C:D7:EA:04 no -80dBm@9Mbps 1Mbps 6m56s
7 wlan2 F4:EC:38:95:64:FA no -73dBm@48Mbps 1Mbps 7m21s
8 wlan2 94:0C:6D:BF:66:36 no -76dBm@1Mbps 1M… 4m3s
9 wlan2 74:EA:3A:E0:04:65 no -77dBm@1Mbps 1Mbp… 2m53s
10 wlan2 F4:EC:38:A9:AB:83 no -75dBm@48Mbps 1Mbps 8m3s
11 wlan2 94:0C:6D:BF:7F:19 no -75dBm@11Mbps 1Mbps 13m53s
12 wlan2 B0:48:7A:95:00:71 no -81dBm@18Mbps 1Mbps 9m54s
13 wlan2 D8:5D:4C:8F:36:EE no -80dBm@1Mbps 1Mbps 8m22s
14 wlan2 F4:EC:38:E7:19:04 no -62dBm@1Mbps 1Mbps 6m18s
15 wlan2 D8:5D:4C:D7:E7:E8 no -84dBm@9Mbps 1Mbps4m18s
16 wlan2 94:0C:6D:BF:6F:CC no -73dBm@1Mbps 1Mb… 2m47s
At client end I m using Tplink usb adapters or CPE like TL-WN422G or TL-WN722N or TL-WN5210 or TL-WN500G
I have very good or excellent signals strength on all my users
Also I m tried to disable Default Authentication & added my paying users to access list
Before this I m using X86 pc now after upgrade to Router board the problem is still exist
A lots of complains I have received only after 8:00PM to10:00PM
And all the other time of day & night when users more then 50 there is no problem & network is going on excellent performance
Plz help me for fixing this problem

2

Not enough information but it looks like if your customers start generate traffic probelms starts

It can be “hidden node issue for examle”

3

it seem most of the connection is not very good.

4

thans u for giving me some time
plz tell me that what u mean by hidden node
plz clear it
i m online daily evening at yahoo
here is my id mikb262@yahoo.com
if u can online
i can give u access of my rb
u can see bettere then my words
thanks alot

5

You should let us know how is ur wireless setup.
Like, AP antenna (sector? patch? grid? omni).
CPE, what’s the Antenna and distance.

6

thanks for that
i m using Sector panel Antenna
& RB411AR as wireless remont AP
antenna to mini pci carnd the cable lenght is 25 Feet only
its going to hans some time on night after 8pm to 10 pm not daily but when hanging there is only few users online about 25
but working perfectoly when more then 50 users r online
this is condition that i cant understand

7

Hi basically there is 2 different thing..

  1. AP side: Assume that you are using the Sector antenna, but, what’s the horizontal and vertical coverage? you may provide me the link where you purchase or the model for me to search.

  2. CPE, the CPE antenna and location.
    you may imaging that, if you stand in the AP location, the angle from the left end client to the right end client, what’s the angle (check in google earth).

then, what’s the angle you customer far end and the near end, based on that and check on the sector coverage, we should can know the issue.