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.
The DOT11_DATA_RATE_MAPPING_ENTRY structure defines a data rate supported by a PHY on the 802.11 station for transmit and receive operations.


typedef struct DOT11_DATA_RATE_MAPPING_ENTRY {
  UCHAR  ucDataRateIndex;
  UCHAR  ucDataRateFlag;
  USHORT usDataRateValue;



The index value for the data rate contained in the usDataRateValue member. The value of the ucDataRateIndex member must be unique for each entry in the DataRateMappingEntries array.

This value is a bitmask as defined in the following table.

Bits Description
0-6 The data rate index, containing a value from 2 through127.
7 This bit is not used and must be set to zero.


The attributes of the data rate entry.

This value is a bitmask as defined in the following table.

Bits Name Description
0 DOT11_DATA_RATE_NON_STANDARD If set, the entry is not a standard data rate defined in IEEE 802.11 standards.
1-7 These bits are not used and must be set to zero.


The data rate, defined in units of 500 kilobits per second (Kbps), with a value from 0x0002 to 0xFFFF.


For the IEEE 802.11 standard data rates, the miniport driver must set the ucDataRateIndex and usDataRateValue members to the same value.

The following table shows the IEEE 802.11 standard data rates, in units of megabits per second (Mbps), and the related values for the ucDataRateIndex and usDataRateValue members.

IEEE 802.11 Standard Rate ucDataRateIndex usDataRateValue
1 Mbps 0x02 0x02
2 Mbps 0x04 0x04
3 Mbps 0x06 0x06
4.5 Mbps 0x09 0x09
5.5 Mbps 0x0B 0x0B
6 Mbps 0x0C 0x0C
9 Mbps 0x12 0x12
11 Mbps 0x16 0x16
12 Mbps 0x18 0x18
18 Mbps 0x24 0x24
22 Mbps 0x2C 0x2C
24 Mbps 0x30 0x30
27 Mbps 0x36 0x36
33 Mbps 0x42 0x42
36 Mbps 0x48 0x48
48 Mbps 0x60 0x60
54 Mbps 0x6C 0x6C


Minimum supported client Available in Windows Vista and later versions of the Windows operating systems.
Header windot11.h (include Ndis.h)

See Also