Manuals

Manuals
Setting Advanced Properties: DW WLAN Card User Guide

Setting Advanced Properties: DW WLAN Card User Guide

 

* 40MHz Intolerant

* Bluetooth Collaboration

* Location

* RTS Threshold

* 802.11h+d

* BSS Mode

* Minimum Power Consumption

* Wake-Up Mode

* 802.11n Preamble

* Disable Bands

* PLCP Header

* WMM

* Afterburner

* Disable Upon Wired Connect

* Priority & VLAN

* WZC IBSS Channel Number

* Antenna Diversity

* Fragmentation Threshold

* Rate (802.11a)

* Xpress Technology

* AP Compatibility Mode

* IBSS 54g Protection Mode

* Rate (802.11b/g)

 

* Band Preference

* IBSS Mode

* Roam Tendency

 

* Bandwidth Capability

* Locally Administered MAC Address

* Roaming Decision

 

 


To view or change the settings of the advanced properties of your DW WLAN Card:

-or-

If the utility icon is not available, click the Start button , click Control Panel (Control Panel Home for Windows Vista; Category view for Windows 7), click View network status and tasks under Network and Internet, and then in the Tasks pane of the Network and Sharing Center page, click Manage wireless networks.

 

NOTE: By default, the utility icon is disabled and hidden. To display the utility icon in the notification area, open the utility and then on the View menu, click Show Utility Icon. A check mark next to the Show Utility Icon command indicates that the command is active. Clicking the command again removes the check mark and removes the utility icon from the notification area.
    2.
    Click Adapter properties.
    3.
    In Wireless Network Connection Properties, click Configure.
    4.
    In Network Adapter Properties, click the Advanced tab.

To view the available settings for a given property:

To change the property setting:

Click an option in the Value list or type a new value, as appropriate (selection options are different for different properties).

The available properties and their respective settings are described as follows.

40MHz Intolerant

When the 40MHz Intolerant property is enabled, the Broadcom WLAN adapter is intolerant of neighboring devices operating in 40-MHz mode in the 2.4-GHz band and forces all the overlapping basic service sets in the 2.4-GHz band to downgrade to 20-MHz operation.

Disabled (default)

Enabled

802.11h+d

The 802.11h+d property configures the advanced radio control of the DW WLAN Card by an associated wireless router/AP. The controls are enabled when the 802.11h+d property is set to Loose 11h, Loose 11h+d, or Strict 11h. When the setting is Strict 11h, the DW WLAN Card associates only to access points supporting IEEE 802.11h protocols when operating in regions with special restrictions on radio operation. When the setting is Loose 11h, the DW WLAN Card does not restrict associations based on the wireless router/AP IEEE 802.11h support. When the setting is Loose 11h+d, the DW WLAN Card does not restrict associations based on the wireless router/AP IEEE 802.11h or IEEE 802.11d support.

Loose 11h (default)

Loose 11h+d

Strict 11h

802.11n Preamble

The 802.11n Preamble property controls the Preamble setting of 802.11n frames. When the property is set to Mixed Mode, the Broadcom WLAN adapter transmits and receives frames with the Mixed-Mode preamble only. When the property is set to Auto, the adapter will transmit and receive frames with the GreenField Preamble, but only if both the adapter and the peer device support the GreenField preamble setting.

Auto (default)

Mixed Mode

Afterburner

Afterburner is a Broadcom proprietary technology that boosts wireless throughput.

Disabled (default). Disables Afterburner

Enabled. Enables Afterburner

Antenna Diversity

Antenna Diversity is a function included in most wireless LAN equipment that has two antennas, Main and Aux. When set to Auto, Antenna Diversity monitors the signal from each antenna and automatically switches to the one with the better signal.

Auto (default)

Aux

Main

AP Compatibility Mode

Some older wireless routers/APs may have implementations that deviate from IEEE 802.11 standards. Setting this property to Broader Compatibility enables your DW WLAN Card to better communicate with such APs, but at the expense of some performance loss. The default setting is Higher Performance.

Higher Performance (default)

Broader Compatibility

Band Preference

The Band Preference property is available only on DW WLAN Card models that have dual-band capability. Band Preference allows users to specify the IEEE 802.11 band preference while roaming, which allows the wireless client to associate with another AP based on band preference even if the signal from the currently associated wireless router/AP is strong enough to sustain the association.

None (default). Roams without regard to the frequency band of the available APs.

Prefer 802.11a (5-GHz band)

Prefer 802.11g/b (2.4-GHz band)

Bandwidth Capability

This property is available only for Dell Wireless 1500/1505/1510, DW1520, DW1501 or future 802.11n-based DW WLAN Cards.

The Bandwidth Capability property configures the bandwidth of each channel to the options shown below. The 20/40 MHz option indicates that both bandwidth capabilities are available, and that the other end of the link may determine the ultimate bandwidth for a given link. The following options are available:

11a/b/g: 20 MHz

11a/b/g: 20/40 MHz

11a: 20/40 MHz

11b/g: 20 MHz (default)

Bluetooth Collaboration

Bluetooth Collaboration enables general purpose input/output transmit suppression protocol between the IEEE 802.11 media access control (MAC) and an external Bluetooth chip to minimize transmit interference. Bluetooth Collaboration is enabled by default.

Enable (default)

Disable

BSS Mode

BSS mode can be used to restrict operation to a particular IEEE 802.11 band. DW WLAN Cards with IEEE 802.11n capability can be restricted to operate on either the 802.11b/g band or only on the 802.11b band. Legacy IEEE 802.11g cards can be restricted to operate on only the 802.11b band. The BSS Mode property applies to networks that are configured for access points.

802.11n Mode (default for cards with IEEE 802.11n capability)

802.11g Mode (default for legacy IEEE 802.11g cards)

802.11b Only

Disable Bands

This property is available only on DW WLAN Card models that have dual-band capability.

None (default)

Disable 802.11g/b

Disable 802.11a

Disable Upon Wired Connect

If this property is set to Enabled, whenever your computer is connected to an Ethernet port and the link state is good, the computer automatically turns off the IEEE 802.11 radio. This conserves IP address allocation, reduces security risks, resolves dual interface routing issues, and prolongs battery life.

 

NOTE: For the Enabled setting to take effect, DW WLAN Card Utility must be installed.

Disabled (default)

Enabled

Fragmentation Threshold

The maximum size in bytes at which packets are fragmented and transmitted a piece at a time instead of all at once. Available values range from 256 to 2346. The default value is 2346.

IBSS 54g Protection Mode

IBSS 54g Protection Mode is a mechanism of prefixing each orthogonal frequency division multiplexing (OFDM) data frame with a request to send/clear to send (RTS/CTS) complimentary code keying (CCK) frame sequence. The duration fields of the RTS and CTS frames should allow the IEEE 802.11b node to correctly set its network allocation vector (NAV) and avoid collisions with the subsequent OFDM frames. As required for Wi-Fi, protection mechanisms are enabled automatically whenever an IEEE 802.11b Station (STA) joins the BSS. If no IEEE 802.11b STA joins, then no protection mechanism is used, and full IEEE 802.11g performance is attained.

Auto (default)

Disabled

IBSS Mode

IBSS Mode is used to set the connection type in an ad hoc network. The following options are available for single-band (2.4-GHz band) adapters:

802.11b Only (default). Links only with IEEE 802.11b networks at up to 11 Mbps.

802.11b/g Auto. Links with IEEE 802.11g and 802.11b networks at up to 54 Mbps.

The following options are available for dual-band (2.4-GHz and 5-GHz) adapters:

802.11b Only (default). Links with IEEE 802.11b networks at up to 11 Mbps or 802.11a networks at up to 54 Mbps.

802.11a/b/g Auto. Links with IEEE 802.11g, 802.11b, and 802.11a networks at up to 54 Mbps.

802.11a/b/g/n Auto. Links with IEEE 802.11n, 802.11g, 802.11b, and 802.11a networks at up to 270 Mbps.

 

NOTE: The 802.11a/b/g/n Auto setting is available only for DW WLAN Cardsthat are IEEE 802.11n capable. If your DW WLAN Card supports 802.11n operation, you can connect to IEEE 802.11n IBSS networks. The maximum rate achievable for a IEEE 802.11n IBSS association is 270 Mbps, but this rate is achievable only when you join a IEEE 802.11n IBSS network that was established to operate within a 40-MHz bandwidth. The maximum rate for most IEEE 802.11n IBSS networks is 130 Mbps. The maximum rate for IEEE 802.11n IBSS networks created by a DW WLAN Card is 130 Mbps.

Locally Administered MAC Address

Locally Administered MAC Address is used to override the MAC address of the DW WLAN Card. The Locally Administered MAC Address is a user-defined MAC address that is used in place of the MAC address originally assigned to the network adapter. Every adapter in the network must have its own unique MAC address. This locally administered address consists of a 12-digit hexadecimal number.

Value. Assigns a unique node address for the adapter.

Not Present (Default). Uses the factory-assigned node address on the adapter.

The appropriate assigned ranges and exceptions for the locally administered address include the following:

Location

Users who purchased their DW WLAN Card in the United States have USA as the default location; users who purchased their DW WLAN Card in Japan have Japan as their default location. For all other users, the Location property is not available. See Radio Approvals for additional information.

Minimum Power Consumption

When enabled, this property enables the wireless client to either turn off the radio or to not scan when the wireless client network is unassociated or when the computer is in the IDLE state.

Enabled (default)

Disabled

PLCP Header

PLCP Header is used to set the header type used for complimentary code keying (CCK) rates. The type can be Long or Auto (short/long).

Auto (Short/Long) (default)

Long

Priority & VLAN

The Priority & VLAN property controls IEEE 802.1p packet priority and the VLAN identifier (ID).

When the property is set to Priority Enabled or Priority & VLAN Enabled, the driver supports “User Priority” values that correspond to the following access classes: background (BG), best-effort (BE), video (VI), and voice (VO).

When the property is set to Priority & VLAN Enabled or VLAN Enabled, the driver removes VLAN ID marking in the MAC headers of packets.

When the property is set to Priority & VLAN Disabled, the packets in the queue are transmitted on a first-come, first-served basis, regardless of any priority information within the packet.

Priority & VLAN Disabled (default)

Priority & VLAN Enabled

Priority Enabled

VLAN Enabled

Rate (802.11a)

This property allows you to specify the rate [in megabits per second (Mbps)] at which data is transmitted for IEEE 802.11a operation. The possible values are: 6, 9, 12, 18, 24, 36, 48, and 54. The default setting is Use best Rate, which automatically adjusts the transmission rate to the optimal rate based on the capabilities of the other wireless clients and wireless routers/APs on the network.

 

NOTE: The default value for this property is set for maximum performance. Therefore, home users should not change the setting by themselves. Only network administrators or technicians with wireless LAN experience should change the default setting.

Rate (802.11b/g)

This property allows you to specify the rate [in megabits per second (Mbps)] at which data is transmitted for IEEE 802.11b/g operation. The possible values are: 1, 2, 5.5, 6, 9, 11, 18, 24, 36 48, and 54. The default setting is Use best Rate, which automatically adjusts the transmission rate to the optimal rate based on the capabilities of the other wireless clients and wireless routers/APs on the network.

 

NOTE: The default value for this property is set for maximum performance. Therefore, home users should not change the setting by themselves. Only network administrators or technicians with wireless LAN experience should change the default setting.

Roaming Decision

The signal strength value that determines when the DW WLAN Card starts scanning for another wireless router/AP.

Default (default). 75 dB

Optimize Bandwidth. 65 dB

Optimize Distance. 85 dB

Roam Tendency

This property adjusts the roaming thresholds for the DW WLAN Card.

Moderate (default). Roams to APs having a signal strength at least 20 dB greater than the current wireless router/AP.

Aggressive. Roams to APs having a signal strength at least 10 dB greater than the current wireless router/AP.

Conservative. Roams to APs having a signal strength at least 30 dB greater than the current wireless router/AP.

RTS Threshold

If the number of frames in the data packet is at or above the RTS Threshold, a request to send/clear to send handshake is turned on before the data packet is sent. The default value is 2347. The range is 0 to 2347.

Wake-Up Mode

The Wake-up Mode property enables or disables the capability of the DW WLAN Card to wake up the computer from a low-power state when the DW WLAN Card receives a network wake-up packet.

All. Loss of Link, Magic Pattern, and Net Pattern are considered in wake pattern matching.

LossOfLink. Wakes up the machine if the wireless STA loses its association with the wireless router/AP in Wake mode. Loss of link is detected by three events:

Magic & WakeUp Frame (default). Both Magic Pattern and Net Pattern are considered in wake pattern matching.

Magic Frame & LossOfLink. Both Magic Pattern and Loss of Link are considered in wake pattern matching.

Magic Packet. Only Magic Pattern is considered in wake pattern matching.

None. Pattern Matching is disabled.

Wake Up Frame. Only Net Pattern is considered in wake pattern matching.

Wake Up Frame & LossOfLink. Both Net Pattern and Loss of Link are considered in wake pattern matching.

WMM

Wi-Fi Multimedia (WMM®). The WMM property enables Quality of Service (QoS) for audio, video, and voice applications over a wireless network by prioritizing streams of content and optimizing the way the network allocates bandwidth among competing applications.

Auto (default). With WMM set to Auto, when the wireless client connects to the wireless router/AP, and the wireless router/AP has Unscheduled Automatic Power Save Delivery [Unscheduled Automatic Power Save Delivery (UAPSD)] enabled, the wireless client is allowed to enter Power Save mode. If the AP does not support UAPSD, the wireless client cannot enter Power Save mode. If this is the case, the battery in the client computer discharges more quickly and must be recharged more frequently.

Enabled. The wireless client enters Power Save mode for WMM associations independent of whether the AP has UAPSD enabled or disabled.

Disabled. The wireless client does not have WMM association.

WZC IBSS Channel Number

The WZC IBSS Channel Number property selects the independent basic service set (IBSS) channel number on which to operate when WZC is managing your wireless networks. The default setting is 11.

Xpress Technology

Xpress™ Technology is a proprietary frame bursting technology that improves throughput by repackaging data so that more data can be sent in each frame. Xpress Technology is disabled by default.

Disabled (default). Disables Xpress Technology.

Enabled. Enables Xpress Technology.


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