wifi ping延时大的问题

wifi ping延时大的问题"/>

wifi ping延时大的问题

        客户有一款hud抬头显示设备，连接我方wifi设备后，ping延时很大1秒多，TCP传输抬头显示数据延时卡顿很强烈，拿到HUD设备开始测试3款ublox wifi：

        问题总结：hud设备在g/n制式上由于MCU算力较弱导致延时过大，改为11b正常。

W374 WPA2测试

64 bytes from 192.168.110.110: icmp_seq=9 ttl=255 time=81.5 ms
64 bytes from 192.168.110.110: icmp_seq=10 ttl=255 time=25.3 ms
64 bytes from 192.168.110.110: icmp_seq=11 ttl=255 time=2.52 ms
64 bytes from 192.168.110.110: icmp_seq=12 ttl=255 time=14.1 ms
64 bytes from 192.168.110.110: icmp_seq=13 ttl=255 time=69.0 ms
64 bytes from 192.168.110.110: icmp_seq=14 ttl=255 time=105 ms
64 bytes from 192.168.110.110: icmp_seq=15 ttl=255 time=48.1 ms
64 bytes from 192.168.110.110: icmp_seq=16 ttl=255 time=91.4 ms
64 bytes from 192.168.110.110: icmp_seq=17 ttl=255 time=36.2 ms
64 bytes from 192.168.110.110: icmp_seq=18 ttl=255 time=84.0 ms
64 bytes from 192.168.110.110: icmp_seq=19 ttl=255 time=27.4 ms
64 bytes from 192.168.110.110: icmp_seq=20 ttl=255 time=73.3 ms
64 bytes from 192.168.110.110: icmp_seq=21 ttl=255 time=15.6 ms
64 bytes from 192.168.110.110: icmp_seq=22 ttl=255 time=64.0 ms
64 bytes from 192.168.110.110: icmp_seq=23 ttl=255 time=6.41 ms
64 bytes from 192.168.110.110: icmp_seq=24 ttl=255 time=55.1 ms
64 bytes from 192.168.110.110: icmp_seq=25 ttl=255 time=98.2 ms
64 bytes from 192.168.110.110: icmp_seq=26 ttl=255 time=34.4 ms
64 bytes from 192.168.110.110: icmp_seq=27 ttl=255 time=87.1 ms
64 bytes from 192.168.110.110: icmp_seq=28 ttl=255 time=30.1 ms
64 bytes from 192.168.110.110: icmp_seq=29 ttl=255 time=1202 ms
64 bytes from 192.168.110.110: icmp_seq=30 ttl=255 time=939 ms
64 bytes from 192.168.110.110: icmp_seq=31 ttl=255 time=1194 ms
64 bytes from 192.168.110.110: icmp_seq=32 ttl=255 time=1138 ms
64 bytes from 192.168.110.110: icmp_seq=33 ttl=255 time=980 ms
64 bytes from 192.168.110.110: icmp_seq=34 ttl=255 time=132 ms
64 bytes from 192.168.110.110: icmp_seq=35 ttl=255 time=1178 ms
64 bytes from 192.168.110.110: icmp_seq=36 ttl=255 time=923 ms
64 bytes from 192.168.110.110: icmp_seq=37 ttl=255 time=1170 ms

W374 WPA1测试

64 bytes from 192.168.110.110: icmp_seq=51 ttl=255 time=37.4 ms
64 bytes from 192.168.110.110: icmp_seq=52 ttl=255 time=25.4 ms
64 bytes from 192.168.110.110: icmp_seq=53 ttl=255 time=41.3 ms
64 bytes from 192.168.110.110: icmp_seq=54 ttl=255 time=1.36 ms
64 bytes from 192.168.110.110: icmp_seq=55 ttl=255 time=93.5 ms
64 bytes from 192.168.110.110: icmp_seq=56 ttl=255 time=6.91 ms
64 bytes from 192.168.110.110: icmp_seq=57 ttl=255 time=36.5 ms
64 bytes from 192.168.110.110: icmp_seq=58 ttl=255 time=59.4 ms
64 bytes from 192.168.110.110: icmp_seq=59 ttl=255 time=92.2 ms
64 bytes from 192.168.110.110: icmp_seq=60 ttl=255 time=104 ms
64 bytes from 192.168.110.110: icmp_seq=61 ttl=255 time=24.5 ms
64 bytes from 192.168.110.110: icmp_seq=62 ttl=255 time=46.6 ms
64 bytes from 192.168.110.110: icmp_seq=63 ttl=255 time=70.0 ms
64 bytes from 192.168.110.110: icmp_seq=64 ttl=255 time=91.7 ms
64 bytes from 192.168.110.110: icmp_seq=65 ttl=255 time=11.1 ms
64 bytes from 192.168.110.110: icmp_seq=66 ttl=255 time=33.9 ms
64 bytes from 192.168.110.110: icmp_seq=67 ttl=255 time=59.3 ms
64 bytes from 192.168.110.110: icmp_seq=68 ttl=255 time=84.1 ms
64 bytes from 192.168.110.110: icmp_seq=69 ttl=255 time=102 ms
64 bytes from 192.168.110.110: icmp_seq=70 ttl=255 time=24.0 ms
64 bytes from 192.168.110.110: icmp_seq=71 ttl=255 time=45.8 ms
64 bytes from 192.168.110.110: icmp_seq=72 ttl=255 time=70.4 ms
64 bytes from 192.168.110.110: icmp_seq=73 ttl=255 time=124 ms
64 bytes from 192.168.110.110: icmp_seq=74 ttl=255 time=1036 ms
64 bytes from 192.168.110.110: icmp_seq=75 ttl=255 time=1051 ms
64 bytes from 192.168.110.110: icmp_seq=76 ttl=255 time=1074 ms
64 bytes from 192.168.110.110: icmp_seq=77 ttl=255 time=1096 ms
64 bytes from 192.168.110.110: icmp_seq=78 ttl=255 time=192 ms
64 bytes from 192.168.110.110: icmp_seq=79 ttl=255 time=1048 ms
64 bytes from 192.168.110.110: icmp_seq=80 ttl=255 time=1061 ms
64 bytes from 192.168.110.110: icmp_seq=81 ttl=255 time=1081 ms
64 bytes from 192.168.110.110: icmp_seq=82 ttl=255 time=1103 ms
64 bytes from 192.168.110.110: icmp_seq=83 ttl=255 time=1025 ms
64 bytes from 192.168.110.110: icmp_seq=84 ttl=