问题：连接不稳定，经常掉线，电脑连接上link speed速率仅有6~46Mb/s,手机上433Mb/s
引用来源：5G时，hostapd的信道只能有以下几个
int allowed[] = { 36, 44, 52, 60, 100, 108, 116, 124, 132, 140,
149, 157, 184, 192 };
hostapd_2.4g.conf
1 #ctrl_interface=/var/run/hostapd 2 interface=wlan0 3 driver=nl80211 4 ssid=HHQJ_IMX334 5 channel=9 6 macaddr_acl=0 7 auth_algs=1 8 hw_mode=g 9 ignore_broadcast_ssid=0 10 wpa=2 11 wpa_passphrase=12345678 12 wpa_key_mgmt=WPA-PSK 13 wpa_pairwise=TKIP CCMP 14 rsn_pairwise=CCMP TKIP
hostapd_5g.conf
参考: How to configure hostapd for a 5Ghz network
设置了信道和硬件模式hw_mode = a;
1 #ctrl_interface=/var/run/hostapd 2 interface=wlan0 3 hw_mode=a 4 driver=nl80211 5 channel=149 6 auth_algs=1 7 #ieee80211d=1 8 #country_code=CN 9 ieee80211n=1 10 ieee80211ac=1 11 wmm_enabled=1 12 wpa=2 13 ssid=HHQJ_IMX334 14 wpa_passphrase=12345678 15 wpa_key_mgmt=WPA-PSK 16 wpa_pairwise=CCMP 17 rsn_pairwise=CCMP
一开始没有加上ieee80211n=1,PC端的协商速率最高只有54Mb/s, 加上后PC端就有433Mb/s，不知道什么原因
相关配置文件：
start_hostapd.sh
#!/bin/sh dir=`dirname $0` cd $dir modprobe ahci.ko modprobe bcmdhd.ko sleep 3 hostapd /etc/hostapd_5G_1.conf -B sleep 3 ifconfig wlan0 192.168.1.2 udhcpd /etc/udhcpd.conf #udhcpc -i wlan0&