![]() ![]() ![]() The below graphic provides an overview of how a Connection Handover Select message is applied for Wi-Fi Direct device pairing, specifically NDEF records 3 and 4. Wi-Fi Direct pairing is accomplished using an NFC Forum standardized Connection Handover Select message type. This section provides more details on how NFC, Wi-Fi Direct, and Windows work together to support unidirectional wireless pairing for Wi-Fi Direct devices such as printers. Unidirectional Pairing Using NFC for Wi-Fi Direct In this method, only the PAYLOAD of the NDEF record will be used. The NDEF message contains a first record with a TNF field value of 0x01 and a TYPE field that is equal to “Hs”, and an alternative carrier record that points to a Wi-Fi Direct Carrier Configuration Record. Windows requires NFC-enabled NFP providers to support a specific NFC Forum–defined mechanism for conveying the Wi-Fi Direct OOB pairing information for unidirectional pairing. To ensure interoperability across NFP providers, the pairing information should be encapsulated in a provider-specific message format.Īs described elsewhere in this document, there are no specific requirements for proximity technologies other than for NFC-enabled NFP providers. Upon receipt of the connection information, Windows performs the actual installation of the device in-band using device class specific techniques. An NFC-enabled NFP provider on the PC receives the connection information from the tag and passes this to Windows as a subscriber. Windows subscribes to this pairing information. Using NFC as an example, unidirectional installation is accomplished by storing the pairing information in a static or passive NFC tag (an active NFC tag in static-emulation mode may also be used). There is no further interaction between an NFP provider in the PC and the connecting device. Windows will prompt the user for consent, and if it is given, Windows will attempt to connect to each of the addresses, in order, until one succeeds. Windows relies on a proprietary pairing message as defined below. Wi-Fi Direct devices follow the Wi-Fi Alliance Out-Of-Band (OOB) pairing procedure and the NFC Forum recommendations. NFP passes the pairing information to Windows. Peripheral Wi-Fi Direct Device Pairingĭuring the tap, NFP receives pairing information from the connecting device. ![]() For more information, see Wi-Fi Alliance. Windows 10 also supports NFC to Wi-Fi Direct static connection handover through the Wi-Fi alliance’s Wi-Fi P2P Carrier Configuration Record. ![]()
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December 2022
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