DOT11_HRDSSS_PHY_ATTRIBUTES structure (windot11.h)
Important
WiFiCx is the new Wi-Fi driver model released in Windows 11. We recommend that you use WiFiCx to take advantage of the latest features. The WDI driver model is now in maintenance mode and will only receive high priority fixes.
The DOT11_HRDSSS_PHY_ATTRIBUTES structure defines the attributes specific to a high-rate direct-sequence spread spectrum (HRDSS) PHY type.
Syntax
typedef struct DOT11_HRDSSS_PHY_ATTRIBUTES {
BOOLEAN bShortPreambleOptionImplemented;
BOOLEAN bPBCCOptionImplemented;
BOOLEAN bChannelAgilityPresent;
ULONG uHRCCAModeSupported;
} DOT11_HRDSSS_PHY_ATTRIBUTES, *PDOT11_HRDSSS_PHY_ATTRIBUTES;
Members
bShortPreambleOptionImplemented
A Boolean value that, if set to TRUE, specifies that the PHY supports the option to enable the short Physical Layer Convergence Procedure (PLCP) preamble and header. For more information about the short PLCP preamble and header, refer to Clause 18.2.2.2 of the IEEE 802.11b-1999 standard
bPBCCOptionImplemented
A Boolean value that, if set to TRUE, specifies that the PHY supports enabled packet binary convolutional code (PBCC) modulation. For more information about PBCC modulation, refer to Clause 18.4.6.6 of the IEEE 802.11b-1999 standard.
bChannelAgilityPresent
A Boolean value that, if set to TRUE, specifies that the PHY supports channel agility. For more information about channel agility, refer to Clause 18 of the IEEE 802.11b-1999 standard and Clause 19 of the IEEE 802.11g-2003 standard.
uHRCCAModeSupported
The type of clear channel assessment (CCA) mode supported by the current PHY type. For more information about CCA, refer to Clause 16.4.8.5 of the IEEE 802.11-2012 standard and Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.
The CCA modes supported by the PHY are defined through the following bitmask:
DOT11_CCA_MODE_ED_ONLY (0x00000001)
CCA mode using the energy detect (ED) signal. For more information about the ED signal, refer to Clause 15.4.6.1 of the IEEE 802.11-2012 standard.
DOT11_CCA_MODE_CS_ONLY (0x00000002)
CCA mode using the carrier sense (CS) signal. For more information about the CS signal, refer to Clause 15.4.6.2 of the IEEE 802.11-2012 standard.
DOT11_CCA_MODE_ED_and_CS (0x00000004)
Both ED and CS modes.
DOT11_HR_CCA_MODE_CS_WITH_TIMER (0x00000008)
CCA mode using the CS signal with a timer. For more information about this CCA mode, refer to Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.
DOT11_HR_CCA_MODE_HRCS_AND_ED (0x00000010)
Both ED and CS modes on high-rate (HR) PHYs. For more information about this CCA mode, refer to Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.
Remarks
The miniport driver defines the attributes of a PHY on the 802.11 station through the DOT11_PHY_ATTRIBUTES structure, and formats the HRDSSSAttributes member as a DOT11_HRDSSS_PHY_ATTRIBUTES structure. The driver must only do this if the PHY defined by the DOT11_PHY_ATTRIBUTES structure is an HRDSSS PHY type.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows Vista and later versions of the Windows operating systems. |
| Header | windot11.h (include Ndis.h) |