Archer A7 Wifi not stable , connected to enterprise network

Installing and Using OpenWrt Network and Wireless Configuration
1

I am trying to connect my Archer 7 to the university wifi. First I tried to do the wifi setup with LUCI

I got the connection up and running but it is not stable and getting disconnected. Here are my logs

Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: DNS service limited to local subnets
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP no-DHCPv6 no-Lua TFTP no-conntrack no-ipset no-auth no-DNSSEC no-ID loop-detect inotify dumpfile
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq-dhcp[1846]: DHCP, IP range 192.168.1.100 -- 192.168.1.249, lease time 12h
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain test
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain onion
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain localhost
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain local
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain invalid
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain bind
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: using local addresses only for domain lan
Mon Feb  3 21:22:15 2020 daemon.warn dnsmasq[1846]: no servers found in /tmp/resolv.conf.auto, will retry
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: read /etc/hosts - 4 addresses
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: read /tmp/hosts/dhcp.cfg01411c - 2 addresses
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq-dhcp[1846]: read /etc/ethers - 0 addresses
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: read /etc/hosts - 4 addresses
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq[1846]: read /tmp/hosts/dhcp.cfg01411c - 2 addresses
Mon Feb  3 21:22:15 2020 daemon.info dnsmasq-dhcp[1846]: read /etc/ethers - 0 addresses
Mon Feb  3 21:22:16 2020 daemon.notice netifd: wwan (1820): udhcpc: sending select for 172.20.39.0
Mon Feb  3 21:22:16 2020 daemon.notice netifd: wwan (1820): udhcpc: lease of 172.20.39.0 obtained, lease time 900
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: read /etc/hosts - 4 addresses
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: read /tmp/hosts/dhcp.cfg01411c - 2 addresses
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq-dhcp[1846]: read /etc/ethers - 0 addresses
Mon Feb  3 21:22:16 2020 daemon.notice netifd: Interface 'wwan' is now up
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: reading /tmp/resolv.conf.auto
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain test
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain onion
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain localhost
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain local
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain invalid
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain bind
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using local addresses only for domain lan
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using nameserver 172.16.3.148#53
Mon Feb  3 21:22:16 2020 daemon.info dnsmasq[1846]: using nameserver 172.16.3.149#53
Mon Feb  3 21:22:16 2020 user.notice firewall: Reloading firewall due to ifup of wwan (wlan0)
Mon Feb  3 21:22:17 2020 daemon.notice netifd: wan (1611): udhcpc: sending discover
Mon Feb  3 21:22:19 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: authenticated
Mon Feb  3 21:22:19 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: associated (aid 2)
Mon Feb  3 21:22:19 2020 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 04:d6:aa:da:cf:9a
Mon Feb  3 21:22:19 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a RADIUS: starting accounting session DB8FADC5EE004FE1
Mon Feb  3 21:22:19 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a WPA: pairwise key handshake completed (RSN)
Mon Feb  3 21:22:19 2020 daemon.info dnsmasq-dhcp[1846]: DHCPREQUEST(br-lan) 192.168.1.239 04:d6:aa:da:cf:9a
Mon Feb  3 21:22:19 2020 daemon.info dnsmasq-dhcp[1846]: DHCPACK(br-lan) 192.168.1.239 04:d6:aa:da:cf:9a Galaxy-Note8
Mon Feb  3 21:23:11 2020 daemon.err uhttpd[1284]: luci: accepted login on / for root from 192.168.1.210
Mon Feb  3 21:25:33 2020 daemon.notice hostapd: wlan1: AP-STA-DISCONNECTED 04:d6:aa:da:cf:9a
Mon Feb  3 21:25:33 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: disassociated
Mon Feb  3 21:25:34 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)
Mon Feb  3 21:26:08 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: authenticated
Mon Feb  3 21:26:08 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a IEEE 802.11: associated (aid 2)
Mon Feb  3 21:26:08 2020 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 04:d6:aa:da:cf:9a
Mon Feb  3 21:26:08 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a RADIUS: starting accounting session 5E9EBE1E16767524
Mon Feb  3 21:26:08 2020 daemon.info hostapd: wlan1: STA 04:d6:aa:da:cf:9a WPA: pairwise key handshake completed (RSN)
Mon Feb  3 21:26:08 2020 daemon.info dnsmasq-dhcp[1846]: DHCPDISCOVER(br-lan) 04:d6:aa:da:cf:9a
Mon Feb  3 21:26:08 2020 daemon.info dnsmasq-dhcp[1846]: DHCPOFFER(br-lan) 192.168.1.239 04:d6:aa:da:cf:9a
Mon Feb  3 21:26:08 2020 daemon.info dnsmasq-dhcp[1846]: DHCPREQUEST(br-lan) 192.168.1.239 04:d6:aa:da:cf:9a
Mon Feb  3 21:26:08 2020 daemon.info dnsmasq-dhcp[1846]: DHCPACK(br-lan) 192.168.1.239 04:d6:aa:da:cf:9a Galaxy-Note8
Mon Feb  3 21:30:31 2020 daemon.notice netifd: wwan (1820): udhcpc: sending renew to 172.16.3.7
Mon Feb  3 21:30:31 2020 daemon.notice netifd: wwan (1820): udhcpc: lease of 172.20.39.0 obtained, lease time 900
Mon Feb  3 21:38:01 2020 daemon.notice netifd: wwan (1820): udhcpc: sending renew to 172.16.3.7
Mon Feb  3 21:38:01 2020 daemon.notice netifd: wwan (1820): udhcpc: lease of 172.20.39.0 obtained, lease time 900

Please let me know how I can solve this. I appreciate it guys.

2

I see a Note 8 dropping on and off the AP, that is kind of typical of mobiles because they sleep a lot.

The university network is only giving your client a 15 minute DHCP lease so you will see a lot of renews. The log snippet posted shows the network starting, the university connected at 21:22 and it stays connected for the rest of the log.