Quick Start Guide For Starting Soft AP Mode

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Quick Start Guide for starting
Soft-AP mode

(A) How to start Soft-AP mode:
(1) Disable network management or other wireless tools, e.g. wpa_supplicant
(2) Uncompress the driver and then compile the driver

./make
P.S. If the driver uses CFG80211, there are several steps below need to do:
I. If the driver package is for single interface
1. Uncomment
the
definition
“//#define
CONFIG_IOCTL_CFG80211” of the file “include/autoconf.h” to
“#define CONFIG_IOCTL_CFG80211”
2. If the Linux kernel version is greater than 3.2.0
(kernel>=3.2.0),user must uncomment the definition “//#define
RTW_USE_CFG80211_STA_EVENT” of file include/autoconf.h
to “#define RTW_USE_CFG80211_STA_EVENT”
II. If the driver package is for multiple interfaces
1. user
should
modify
the
definition
in
the
“autoconf_xxx_yyy_linux.h” file but not “include/autoconf.h”.
The “xxx” is IC type and the “yyy” is interface type. For example,
the IC type is RTL8192C and the interface type is USB, the file
name is “autoconf_rtl8192c_usb_linux.h”.
III. If the driver uses CFG80211 and the Linux kernel version >= 3.2.0, the
SOFTAP must use the
"wpa_supplicant_8_jb_4.2_rtw_zzzzz.20130821.tar.gz” or
“wpa_supplicant_8_kk_4.4_rtw_zzzzz.20140220.tar.gz" package. In
contrast, the SOFTAP should use
“wpa_supplicant_hostapd-0.8_rtw_zzzzz.20130812.tar.gz” package for
WEXT. The zzzz is version number. If the driver using CFG80211 but
kernel < 3.2.0, wpa_supplicant are not available in driver package so far,
and please contact us.
(3) insmod 8192cu.ko
(4) ifconfig wlan0 up
(5) ifconfig wlan0 192.168.0.1 (using the static ip for testing)
(6) Compile SOFTAP, unpack wpa_supplicant_hostapd-0.8_rtw_20120803.zip
in the folder (wpa_supplicant_hostapd-0.8\hostapd)

./make
(7) start hostapd daemon:

./hostapd rtl_hostapd.conf -B

(B) Configure file for Soft-AP mode setting:
(1) rtl_hostapd.conf is the configure file for functions setting.
(2) The major variable setting in the rtl_hostapd.conf configure file,
(i) basic configuration
interface=wlan0
ssid=rtwap
# channel 1-14 is 2.4 GHz ; channel 36, 40, 44, 46, 48, 52, 56, 60,
# 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 149,
# 153, 157, 161 is 5GHz
# The channels that are available for use in a particular country differ
# according to the regulations of that country.
channel=6
# Operation mode (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE
# 802.11g, Default: IEEE 802.11b )
hw_mode=g
#If the wireless interface is included in a bridge,
#an additional configuration parameter, bridge, is needed
bridge=br0
# set “driver=rtl871xdrv” for WEXT, or “driver=nl80211” for
# CFG80211
driver=rtl871xdrv
(ii) security mode configuration
# This field is a bit field that can be used to enable WPA
# (IEEE 802.11i/D3.0)
# and/or WPA2 (full IEEE 802.11i/RSN):
# bit1 = IEEE 802.11i/RSN (WPA2) (dot11RSNAEnabled)
wpa=2
# wpa_passphrase=secret passphrase
wpa_passphrase=87654321

# Set of accepted key management algorithms
# (WPA-PSK, WPA-EAP, or both).
wpa_key_mgmt=WPA-PSK
# Set of accepted cipher suites (encryption algorithms)
# for pairwise keys
wpa_pairwise=CCMP
(iii) IEEE 802.11n related configuration
# ieee80211n: Whether IEEE 802.11n (HT) is enabled
# 0 = disabled (default)
# 1 = enabled
ieee80211n=1
# ht_capab: HT capabilities (list of flags)
# Supported channel width set: [HT40-] = both 20 MHz and 40 MHz
# with secondary channel below the primary channel;
# [HT40+] = both 20 MHz and 40 MHz with secondary channel upon
# the primary channel
# Note:There are limits on which channels can be used with HT40- and
# HT40+.Following table shows the channels that may be available for
# HT40- and HT40+ use per IEEE 802.11n Annex J:
# freq
HT40HT40+
# 2.4 GHz
5-13
1-7 (1-9 in Europe/Japan)
# 5 GHz
40,48,56,64
36,44,52,60
# Short GI for 20 MHz: [SHORT-GI-20] (disabled if not set)
# Short GI for 40 MHz: [SHORT-GI-40] (disabled if not set)
ht_capab=[SHORT-GI-20][SHORT-GI-40][HT40+]

(iv) Check the station connected to softap using hostapd_cli:

./hostapd_cli all_sta
(v) How to start WPS process as internal registrar?
1. for PIN code = 12345670

./hostapd_cli wps_pin any 12345670
2. for PBC

./hostapd_cli wps_pbc

(C) How to get the best channel?
1. Assume the WLAN interface is wlan0 and the IC is RTL8192DU-VS:

ifconfig wlan0 up
iwlist wlan0 scan
iwlist wlan0 scan
iwlist wlan0 scan
cat /proc/net/rtl8192du/wlan0/best_channel
Notes:
1. If your WLAN interface is not wlan0, please change it to your used interface.
(ex: wlan51)
2. If your driver IC is not RTL8192DU-VS, please change the rtl8192du to your
used IC. (e.g. rtl8192cu, rtl8188eu, etc.)
3. The result of “cat /proc/net/rtl…/wlan0/best_channel” has two parts. The first
part is received packet count at all supported channels during site survey.
Developers can use these statics to decide your own best channel. The second
part is the simple estimated best channels for 5G and 2.4G band for reference
only. HT40+ rule is used to estimate the best channel when the primary
channel is at 1, 6, 36, 44, etc., and the primary channel with minimum
received packet count is selected.
Source Exif Data: 
File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 5
Language                        : zh-TW
Tagged PDF                      : Yes
Title                           : Quick Start Guide for starting Soft-AP mode
Author                          : georgia
Creator                         : Microsoft® Word 2010
Create Date                     : 2015:05:05 12:52:33+08:00
Modify Date                     : 2015:05:05 12:52:33+08:00
Producer                        : Microsoft® Word 2010
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