BCM4313 上的 802.11n 速度

Question 1

好的，我明白了这个问题。

看来当前使用的驱动程序 ( bcma-pci-bridge) 不完全支持我的无线网卡 ( Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter)。如果我让计算机进入睡眠状态并再次将其唤醒，Wi-Fi 卡将保持低功耗模式，因此速度会降低1mbps。

在启动时，速度正确地从变化1mbps到54mbps。

另一种选择，虽然提供了最佳的无线性能，但根本bcmwl-kernel-source不支持模式。AP

我还没能找到任何其他驱动程序。

希望这对某人有帮助。

编辑：切换到brcmsmac添加AP模式。

prakhar@aS4v4g3wOrld:~$ iw list

    Supported interface modes:
         * IBSS
         * managed
         * AP
         * AP/VLAN
         * monitor
    software interface modes (can always be added):
         * AP/VLAN
         * monitor

（部分输出）。

前往本文安装。

Answer

好的，我明白了这个问题。

看来当前使用的驱动程序 ( bcma-pci-bridge) 不完全支持我的无线网卡 ( Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter)。如果我让计算机进入睡眠状态并再次将其唤醒，Wi-Fi 卡将保持低功耗模式，因此速度会降低1mbps。

在启动时，速度正确地从变化1mbps到54mbps。

另一种选择，虽然提供了最佳的无线性能，但根本bcmwl-kernel-source不支持模式。AP

我还没能找到任何其他驱动程序。

希望这对某人有帮助。

编辑：切换到brcmsmac添加AP模式。

prakhar@aS4v4g3wOrld:~$ iw list

    Supported interface modes:
         * IBSS
         * managed
         * AP
         * AP/VLAN
         * monitor
    software interface modes (can always be added):
         * AP/VLAN
         * monitor

（部分输出）。

前往本文安装。

Question 2

BCM4313 上的 802.11n 速度

我创建接入点热点使用以下hostapd配置：

#####Basic Settings########################
#sets the wifi interface to use, is wlan0 in most cases
interface=wlan0
#driver to use, nl80211 works in most cases
driver=nl80211
#Access Point name
ssid=HEXspot

#####Channel and Mode Settings#############
# Operation mode (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE 802.11g,
# ad = IEEE 802.11ad (60 GHz); a/g options are used with IEEE 802.11n, too, to
# specify band)
# Default: IEEE 802.11b
hw_mode=g
# WiFi Channel:
channel=11

##### IEEE 802.11n related configuration ##
#WMM needs to be enabled for full HT functionality
wmm_enabled=1
# ieee80211n: Whether IEEE 802.11n (HT) is enabled
# 0 = disabled (default)
# 1 = enabled
# Note: You will also need to enable WMM for full HT functionality.
ieee80211n=1
# ht_capab: HT capabilities (list of flags)
# LDPC coding capability: [LDPC] = supported
# 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 below the primary channel
#   (20 MHz only if neither is set)
#   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        HT40-       HT40+
#   2.4 GHz     5-13        1-7 (1-9 in Europe/Japan)
#   5 GHz       40,48,56,64 36,44,52,60
#   (depending on the location, not all of these channels may be available
#   for use)
#   Please note that 40 MHz channels may switch their primary and secondary
#   channels if needed or creation of 40 MHz channel maybe rejected based
#   on overlapping BSSes. These changes are done automatically when hostapd
#   is setting up the 40 MHz channel.
# Spatial Multiplexing (SM) Power Save: [SMPS-STATIC] or [SMPS-DYNAMIC]
#   (SMPS disabled if neither is set)
# HT-greenfield: [GF] (disabled if not set)
# Short GI for 20 MHz: [SHORT-GI-20] (disabled if not set)
# Short GI for 40 MHz: [SHORT-GI-40] (disabled if not set)
# Tx STBC: [TX-STBC] (disabled if not set)
# Rx STBC: [RX-STBC1] (one spatial stream), [RX-STBC12] (one or two spatial
#   streams), or [RX-STBC123] (one, two, or three spatial streams); Rx STBC
#   disabled if none of these set
# HT-delayed Block Ack: [DELAYED-BA] (disabled if not set)
# Maximum A-MSDU length: [MAX-AMSDU-7935] for 7935 octets (3839 octets if not
#   set)
# DSSS/CCK Mode in 40 MHz: [DSSS_CCK-40] = allowed (not allowed if not set)
# PSMP support: [PSMP] (disabled if not set)
# L-SIG TXOP protection support: [LSIG-TXOP-PROT] (disabled if not set)
ht_capab=[HT40][GF][SHORT-GI-40][SHORT-GI-20]
# Require stations to support HT PHY (reject association if they do not)
require_ht=1

#####Security and Authentication###########
#macaddr_acl sets options for mac address filtering. 0 means "accept unless in deny list"
macaddr_acl=0
#Sets authentication algorithm
#1 - only open system authentication
#2 - both open system authentication and shared key authentication
auth_algs=1
#setting ignore_broadcast_ssid to 1 will disable the broadcasting of ssid
ignore_broadcast_ssid=0

#####Sets WPA and WPA2 authentication######
#wpa option sets which wpa implementation to use
#1 - wpa only
#2 - wpa2 only
#3 - both
wpa=2
#sets WPA Password required by the clients to authenticate themselves on the network
wpa_passphrase=anything
#sets wpa key management
wpa_key_mgmt=WPA-PSK
#sets encryption used by WPA2
rsn_pairwise=CCMP

我的系统是Ubuntu 12.04.4使用 linux-generic-lts-saucy 内核（Saucy 的 3.11 内核反向移植到Ubuntu 12.04LTS）。我使用了brcmsmac无线驱动程序，该驱动程序从 3.10 内核开始支持 AP 模式。我设法在 2.4GHz 频段和 20MHz 通道宽度上获得了 72Mbps 802.11n 链接速度。但是，就像您的情况一样，实际传输速度低于 1MBps，即使是 FTP 传输也是如此。
由于 BCM4313 无法在 5GHz 上运行，因此无论如何我们都无法获得通道绑定 n 模式速度。我们最好的选择是在 2.4GHz 频段获得 40MHz 通道宽度（HT40 模式）。问题是它brcmsmac不能正确支持 2.4GHz 频段的 40MHz 模式，至少对于 BCM4313 来说是这样。也没有 DSSS/CCK 模式支持。我希望驱动程序在较新的内核中有所改进。当Ubuntu 14.04 可信塔尔羊发布了，我将使用其 3.13 内核再次尝试。

Answer

BCM4313 上的 802.11n 速度

我创建接入点热点使用以下hostapd配置：

#####Basic Settings########################
#sets the wifi interface to use, is wlan0 in most cases
interface=wlan0
#driver to use, nl80211 works in most cases
driver=nl80211
#Access Point name
ssid=HEXspot

#####Channel and Mode Settings#############
# Operation mode (a = IEEE 802.11a, b = IEEE 802.11b, g = IEEE 802.11g,
# ad = IEEE 802.11ad (60 GHz); a/g options are used with IEEE 802.11n, too, to
# specify band)
# Default: IEEE 802.11b
hw_mode=g
# WiFi Channel:
channel=11

##### IEEE 802.11n related configuration ##
#WMM needs to be enabled for full HT functionality
wmm_enabled=1
# ieee80211n: Whether IEEE 802.11n (HT) is enabled
# 0 = disabled (default)
# 1 = enabled
# Note: You will also need to enable WMM for full HT functionality.
ieee80211n=1
# ht_capab: HT capabilities (list of flags)
# LDPC coding capability: [LDPC] = supported
# 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 below the primary channel
#   (20 MHz only if neither is set)
#   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        HT40-       HT40+
#   2.4 GHz     5-13        1-7 (1-9 in Europe/Japan)
#   5 GHz       40,48,56,64 36,44,52,60
#   (depending on the location, not all of these channels may be available
#   for use)
#   Please note that 40 MHz channels may switch their primary and secondary
#   channels if needed or creation of 40 MHz channel maybe rejected based
#   on overlapping BSSes. These changes are done automatically when hostapd
#   is setting up the 40 MHz channel.
# Spatial Multiplexing (SM) Power Save: [SMPS-STATIC] or [SMPS-DYNAMIC]
#   (SMPS disabled if neither is set)
# HT-greenfield: [GF] (disabled if not set)
# Short GI for 20 MHz: [SHORT-GI-20] (disabled if not set)
# Short GI for 40 MHz: [SHORT-GI-40] (disabled if not set)
# Tx STBC: [TX-STBC] (disabled if not set)
# Rx STBC: [RX-STBC1] (one spatial stream), [RX-STBC12] (one or two spatial
#   streams), or [RX-STBC123] (one, two, or three spatial streams); Rx STBC
#   disabled if none of these set
# HT-delayed Block Ack: [DELAYED-BA] (disabled if not set)
# Maximum A-MSDU length: [MAX-AMSDU-7935] for 7935 octets (3839 octets if not
#   set)
# DSSS/CCK Mode in 40 MHz: [DSSS_CCK-40] = allowed (not allowed if not set)
# PSMP support: [PSMP] (disabled if not set)
# L-SIG TXOP protection support: [LSIG-TXOP-PROT] (disabled if not set)
ht_capab=[HT40][GF][SHORT-GI-40][SHORT-GI-20]
# Require stations to support HT PHY (reject association if they do not)
require_ht=1

#####Security and Authentication###########
#macaddr_acl sets options for mac address filtering. 0 means "accept unless in deny list"
macaddr_acl=0
#Sets authentication algorithm
#1 - only open system authentication
#2 - both open system authentication and shared key authentication
auth_algs=1
#setting ignore_broadcast_ssid to 1 will disable the broadcasting of ssid
ignore_broadcast_ssid=0

#####Sets WPA and WPA2 authentication######
#wpa option sets which wpa implementation to use
#1 - wpa only
#2 - wpa2 only
#3 - both
wpa=2
#sets WPA Password required by the clients to authenticate themselves on the network
wpa_passphrase=anything
#sets wpa key management
wpa_key_mgmt=WPA-PSK
#sets encryption used by WPA2
rsn_pairwise=CCMP

我的系统是Ubuntu 12.04.4使用 linux-generic-lts-saucy 内核（Saucy 的 3.11 内核反向移植到Ubuntu 12.04LTS）。我使用了brcmsmac无线驱动程序，该驱动程序从 3.10 内核开始支持 AP 模式。我设法在 2.4GHz 频段和 20MHz 通道宽度上获得了 72Mbps 802.11n 链接速度。但是，就像您的情况一样，实际传输速度低于 1MBps，即使是 FTP 传输也是如此。
由于 BCM4313 无法在 5GHz 上运行，因此无论如何我们都无法获得通道绑定 n 模式速度。我们最好的选择是在 2.4GHz 频段获得 40MHz 通道宽度（HT40 模式）。问题是它brcmsmac不能正确支持 2.4GHz 频段的 40MHz 模式，至少对于 BCM4313 来说是这样。也没有 DSSS/CCK 模式支持。我希望驱动程序在较新的内核中有所改进。当Ubuntu 14.04 可信塔尔羊发布了，我将使用其 3.13 内核再次尝试。

BCM4313 上的 802.11n 速度

问题

信息

`iwconfig`：

`iw list`：

lspci-v：

`Ubuntu Release`：

我已尝试过：

答案1

答案2

BCM4313 上的 802.11n 速度

相关内容

问题

信息

iwconfig：

iw list：

lspci-v：

Ubuntu Release：

我已尝试过：

答案1

答案2

BCM4313 上的 802.11n 速度

相关内容

`iwconfig`：

`iw list`：

`Ubuntu Release`：