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Regulatory Domain Configuration

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Important  The Native 802.11 Wireless LAN interface is deprecated in Windows 10 and later. Please use the WLAN Device Driver Interface (WDI) instead. For more information about WDI, see WLAN Universal Windows driver model.

 

An 802.11 regulatory domain specifies:

  • The number of channels supported within the domain.

  • The radio frequency of each channel.

The following object identifiers (OIDs) set or query the regulatory domain configuration of the 802.11 station.

Name Description

[OID_DOT11_COUNTRY_STRING](https://msdn.microsoft.com/library/windows/hardware/ff569123)

Queries the regulatory domain (identified by an IEEE 802.11 country string) in which the 802.11 station is operating.

[OID_DOT11_CURRENT_REG_DOMAIN](https://msdn.microsoft.com/library/windows/hardware/ff569136)

Sets or queries the current regulatory domain used by the physical media dependent (PMD) sublayer of the PHY on the 802.11 station.

[OID_DOT11_DESIRED_COUNTRY_STRING](https://msdn.microsoft.com/library/windows/hardware/ff569143)

Sets or queries the IEEE 802.11d country string used by the 802.11 station whenever it performs one of the following:

  • Starts an independent basic service set (IBSS) network during a connection operation. For more information, see [Connection Operations](connection-operations.md).

    Note  IBSS (Ad hoc) and SoftAP are deprecated. Starting with Windows 8.1 and Windows Server 2012 R2, use [Wi-Fi Direct](wi-fi-direct-miniport-initialization-and-configuration.md).
     

  • A scan operation. For more information, see [Native 802.11 Scan Operations](native-802-11-scan-operations.md).

[OID_DOT11_MULTI_DOMAIN_CAPABILITY](https://msdn.microsoft.com/library/windows/hardware/ff569389)

Queries the list of attributes for all regulatory domains supported by the 802.11 station.

[OID_DOT11_MULTI_DOMAIN_CAPABILITY_ENABLED](https://msdn.microsoft.com/library/windows/hardware/ff569390)

Sets or queries whether the 802.11 station can operate in multiple regulatory domains.

[OID_DOT11_MULTI_DOMAIN_CAPABILITY_IMPLEMENTED](https://msdn.microsoft.com/library/windows/hardware/ff569391)

Queries whether the 802.11 station supports interoperability within multiple regulatory domains as defined in the IEEE 802.11d-2001 standard.

[OID_DOT11_REG_DOMAINS_SUPPORT_VALUE](https://msdn.microsoft.com/library/windows/hardware/ff569408)

Queries the list of regulatory domains supported by the 802.11 station.

[OID_DOT11_SUPPORTED_COUNTRY_STRING](https://msdn.microsoft.com/library/windows/hardware/ff569421)

Queries the list of regulatory domains (as identified by IEEE 802.11d country strings) supported by the 802.11 station.

 

If the 802.11 station supports multiple regulatory domains, the miniport driver and 802.11 station must follow these guidelines:

  • If the 802.11 station supports the IEEE 802.11d-2001 standard, the miniport driver must always return a value of TRUE when OID_DOT11_MULTI_DOMAIN_CAPABILITY_IMPLEMENTED is queried.

  • If the 802.11 station has enabled 802.11d support for interoperability with multiple regulatory domains, the miniport driver must return a value of TRUE when OID_DOT11_MULTI_DOMAIN_CAPABILITY_ENABLED is queried.

    In this mode, the 802.11 station dynamically determines the regulatory domain it operates in through the 802.11 frame formats that are defined in Clause 7 of the IEEE 802.11d-2001 standard. The miniport driver must return a value of DOT11_REG_DOMAIN_OTHER when OID_DOT11_CURRENT_REG_DOMAIN is queried.

  • If the 802.11 station has disabled interoperability with multiple regulatory domains, the miniport driver must return a value of FALSE when OID_DOT11_MULTI_DOMAIN_CAPABILITY_ENABLED is queried.

    In this mode, the 802.11 station statically configures the regulatory domain based on the value of the IEEE 802.11 dot11CurrentRegDomain MIB object. For more information about this MIB object, see OID_DOT11_CURRENT_REG_DOMAIN.