OID_DOT11_HR_CCA_MODE_SUPPORTED (Compact 2013)

  • Article

3/26/2014

When queried, this OID requests that the miniport driver return the value of the IEEE 802.11 dot11HRCCAModeSupported management information base (MIB) object for the current PHY type on the 802.11 station.

This MIB object specifies the kind of clear channel assessment (CCA) mode supported by the current PHY type. For more information about CCA, refer to Clause 16.3.5.3 of the IEEE 802.11-1999 standard and Clause 18.4.8.4 of the IEEE 802.11b-1999 standard.

The data type for this OID is a ULONG value, which defines the supported CCA modes 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 16.3.5.1 of the IEEE 802.11-1999 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 16.3.5.2 of the IEEE 802.11-1999 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.

The dot11HRCCAModeSupported MIB object is valid for the high-rate direct-sequence spread spectrum (HRDSS) PHY type only. If the current PHY type is not set to dot11_phy_type_hrdsss, the miniport driver must fail the query request by returning NDIS_STATUS_INVALID_DATA from its MiniportOidRequest function.

If the miniport driver is operating in Extensible Station (ExtSTA) mode, the current PHY type is determined through the ExtSTA msDot11CurrentPhyID MIB object. This MIB object specifies the index of the current PHY type within the 802.11 station’s list of supported PHY types. For more information about msDot11CurrentPhyID, see OID_DOT11_CURRENT_PHY_ID.

Requirements

Header

windot11.h

See Also

Reference

NDIS 5.x Legacy Wireless LAN OIDs
MiniportOidRequest
OID_DOT11_CURRENT_PHY_ID
Native 802.11 MIB OIDs
NDIS 5.x Legacy Reference