Hello, please help me. I have RB493 with one R52N card in ap-bridge mode with following configuration:

0 name="wlan1" mtu=1500 mac-address=00:0C:42:3A:D6:64 arp=enabled interface-type=Atheros 11N mode=ap-bridge ssid="MT" frequency=2417
band=2ghz-b/g/n scan-list=default wds-mode=disabled wds-default-bridge=none wds-ignore-ssid=no default-authentication=yes
default-forwarding=yes default-ap-tx-limit=0 default-client-tx-limit=0 hide-ssid=no security-profile=profile1 compression=no



name="profile1" mode=dynamic-keys authentication-types=wpa-psk unicast-ciphers=aes-ccm group-ciphers=aes-ccm
wpa-pre-shared-key="xxxxxxxxxx" wpa2-pre-shared-key="xxxxxxxxxx" supplicant-identity="" tls-mode=no-certificates
tls-certificate=none static-algo-0=none static-key-0="" static-algo-1=none static-key-1="" static-algo-2=none static-key-2=""
static-algo-3=none static-key-3="" static-transmit-key=key-0 static-sta-private-algo=none static-sta-private-key=""
radius-mac-authentication=no radius-mac-accounting=no radius-eap-accounting=no interim-update=0s
radius-mac-format=XX:XX:XX:XX:XX:XX radius-mac-mode=as-username radius-mac-caching=disabled group-key-update=5m
management-protection=allowed management-protection-key=""


some time, abount 1 - 3 min, after connecting the client, I have the following in log:



18:31:45 wireless,debug wlan1: 00:1E:8C:62:39:2F attempts to associate
18:31:45 wireless,debug wlan1: 00:1E:8C:62:39:2F in local ACL, accept
18:31:45 wireless,info 00:1E:8C:62:39:2F@wlan1: connected
18:32:11 wireless,info 00:1E:8C:62:39:2F@wlan1: disconnected, received deauth: sending station leaving (3)
...


whats wrong? is that bug in R52N or it's wrong configuration? can you helme?

ready to provide additional information, I hope for your help

thanks

P.S. RouterOS 4.4

Situation was resolved, problem was in pda asus p750 in WM 6.1 power(battery) profile(settings), not in routeros or r52n.