1.1 Glossary

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This document uses the following terms:

advertise: To publish descriptive identifying information in a name service.

advertisement: Data used by a device to make itself discoverable to proximate devices.

Beacon: A management frame that contains all of the information required to connect to a network. In a WLAN, Beacon frames are periodically transmitted to announce the presence of the network.

big-endian: Multiple-byte values that are byte-ordered with the most significant byte stored in the memory location with the lowest address.

data link layer (L2): The second layer in the ISO/OSI reference model that provides the ability to transfer data among network entities and supports detection and handling of errors in the physical layer.

information element (IE): In a Wi-Fi Protected Setup (WPS) scenario, descriptive information consisting of informative type-length-values that specify the possible and currently deployed configuration methods for a device. The IE is transferred and added to the Beacon and Probe Response frames, and optionally to the Probe Request frame and associated request and response messages.

listener intent: A variable number value specified in the AppWFDConnectionIE message.  WFDA2A uses listener intent to determine the client and server roles.

little-endian: Multiple-byte values that are byte-ordered with the least significant byte stored in the memory location with the lowest address.

Media Access Control (MAC) address: A hardware address provided by the network interface vendor that uniquely identifies each interface on a physical network for communication with other interfaces, as specified in [IEEE802.3]. It is used by the media access control sublayer of the data link layer of a network connection.

network layer (L3): The third layer in the ISO/OSI reference model that provides the ability to transfer variable length data sequences from a source host on one network to a destination host on a different network while maintaining the quality of service (QoS) requested by the transport layer.

organizationally unique identifier (OUI): A unique 24-bit string that uniquely identifies a vendor, manufacturer, or organization on a worldwide l basis, as specified in [IEEE-OUI]. The OUI is used to help distinguish both physical devices and software, such as a network protocol, that belong to one entity from those that belong to another.

pre-shared key (PSK): A key that is obtained through peer-to-peer (P2P) provisioning.

Probe Request: A frame that contains the advertisement IE for a device that is seeking to establish a connection with a proximate device. The Probe Request frame is defined in the Wi-Fi Peer-to-Peer (P2P) Specification v1.2 [WF-P2P1.2] section 4.2.2.

Probe Response: A frame that contains the advertisement IE for a device. The Probe Response is sent in response to a Probe Request. The Probe Response frame is defined in the Wi-Fi Peer-to-Peer (P2P) Specification v1.2 [WF-P2P1.2] section 4.2.3.

Transmission Control Protocol (TCP): A protocol used with the Internet Protocol (IP) to send data in the form of message units between computers over the Internet. TCP handles keeping track of the individual units of data (called packets) that a message is divided into for efficient routing through the Internet.

type-length-value (TLV): A method of organizing data that involves a Type code (16-bit), a specified length of a Value field (16-bit), and the data in the Value field (variable).

Wi-Fi Direct (WFD): A standard that allows Wi-Fi devices to connect to each other without requiring a wireless access point (WAP). This standard enables WFD devices to transfer data directly among each other resulting in significant reductions in setup.

Wi-Fi Direct (WFD) Application to Application Protocol (WFDA2A): The protocol specified by this document, Wi-Fi Direct (WFD) Application to Application Protocol.

Wi-Fi Protected Setup (WPS): A computing standard that attempts to allow easy establishment of a secure wireless home network. This standard was formerly known as Wi-Fi Simple Config.

wireless access point (WAP): A wireless network access server (NAS) that implements 802.11.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.