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WDI_TLV_FTM_RESPONSE

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Important

This topic is part of the WDI driver model released in Windows 10. The WDI driver model is in maintenance mode and will only receive high priority fixes. WiFiCx is the Wi-Fi driver model released in Windows 11. We recommend that you use WiFiCx to take advantage of the latest features.

WDI_TLV_FTM_RESPONSE is a TLV that contains Fine Timing Measurement (FTM) response information from a BSS target.

This TLV is used in the payload data of an NDIS_STATUS_WDI_INDICATION_REQUEST_FTM_COMPLETE task completion indication.

TLV type

0x163

Length

The sum (in bytes) of the sizes of all contained TLVs.

Values

TLV Type Multiple TLV instances allowed Optional Description
WDI_TLV_BSSID WDI_MAC_ADDRESS The BSSID of the target to which this FTM response belongs.
WDI_TLV_FTM_RESPONSE_STATUS WDI_FTM_RESPONSE_STATUS The FTM response status. If success, the rest of the fields in this TLV are present.
WDI_TLV_RETRY_AFTER UINT16 A duration, in seconds, that should pass before trying to request a new FTM from this target.
WDI_TLV_FTM_NUMBER_OF_MEASUREMENTS UINT16 The number of measurements used to provide the round trip time (RTT). If the FTM response status was a success, this field is mandatory.
WDI_TLV_BSS_ENTRY_SIGNAL_INFO INT32 The received signal strength indicator (RSSI) from the FTM target. This is in units of decibels referenced to 1.0 milliwatts (dBm). If the FTM response status was a success, this field is mandatory.
Same as row above UINT32 The link quality value of the FTM target, ranging from 0 through 100. A value of 100 specifies the highest link quality. If the FTM response status was a success, this field is mandatory.
WDI_TLV_RTT UINT32 The measured roundtrip time (RTT), in picoseconds. If the FTM response status was a success, this field is mandatory.
WDI_TLV_RTT_ACCURACY UINT32 The accuracy, or expected degree of closeness, of the provided RTT measurement to the true value. The unit is in picoseconds. For more information, see the WDI_TLV_RTT_ACCURACY.
WDI_TLV_RTT_VARIANCE UINT64 If more than one measurement was used to calculate the RTT, this field provides the statistical variance of the measurements used.
WDI_TLV_LCI_REPORT_STATUS WDI_LCI_REPORT_STATUS If an LCI report was requested, this field provides the status result. If successful, the following fields are present and mandatory.
WDI_TLV_LCI_REPORT_BODY TLV<LIST<UINT8>> The Location Configuration Information (LCI) report, as defined in Section 9.4.2.22.10 of the 802-11-2016 standard, including the LCI subelement and other Optional subelements available. In other words, this is the measurement report section of the Measurement Report element (as per Section 9.4.2.22 from the 802-11-2016 standard).

Requirements

Minimum supported client: Windows 10, version 1903 Minimum supported server: Windows Server 2016 Header: Wditypes.hpp