1 / 13

TGaq Transaction Protocol

TGaq Transaction Protocol. Authors:. Date: 2014-01-22. Abstract. Transaction Protocol for TGaq. Background. TGaq provides a mechanism for an unassociated STA to discover service information from a WLAN network

mgovan
Download Presentation

TGaq Transaction Protocol

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TGaq Transaction Protocol Authors: Date: 2014-01-22 Michael Montemurro, BlackBerry

  2. Abstract Transaction Protocol for TGaq Michael Montemurro, BlackBerry

  3. Background • TGaq provides a mechanism for an unassociated STA to discover service information from a WLAN network • The service discovery information provides hints to the STA on services available on the infrastructure network. Michael Montemurro, BlackBerry

  4. Architecture • Service information and upper layer protocols (ULPs) are encapsulated within a Service Transaction Proxy • The Service Transaction Proxy is a logical component that resides in the infrastructure network and within the unassociated STA. • The Service Transaction Proxy advertises service information using Service Identifiers that defined as part of the ULP • E.g. Bonjour Name for the Bonjour protocol • E.g. urn for uPnP Michael Montemurro, BlackBerry

  5. Michael Montemurro, BlackBerry

  6. Service Transaction Protocol Proxy Access Network STA AP Service Transaction Proxy Service Protocol Specific Communication Service Transaction Proxy P802.11aq Signaling MAC MAC Michael Montemurro, BlackBerry

  7. Example Service Transaction Proxy Table Michael Montemurro, BlackBerry

  8. Transaction Protocol • STP is different from ANQP • Not a request/response mechanism • Allows unsolicited push messages from the STA • Messages can carry information from non-AP STA to AP • ANQP is a network oriented protocol. STP is not for network discovery. Separate rules are needed. • STP contains service information that is broadcast in Beacon frames. Michael Montemurro, BlackBerry

  9. Protocol Elements • The protocol is divided into two components: • Information on service types and upper layer protocols are transmitted using a new element in Beaconand Probe Response frames. • Service information is obtained using a Service Transaction Protocol request/response exchange. Michael Montemurro, BlackBerry

  10. Service Capabilities Element • Service Capability Element Michael Montemurro, BlackBerry

  11. Enumeration of ULP Ids Michael Montemurro, BlackBerry

  12. Example STP Request Frame Figure 3: STP Request Frame Figure 4: Query Request sub-field Michael Montemurro, BlackBerry

  13. Example STP Response Frame Figure 5: STP Response Frame Figure 6: Service Descriptor (SD) sub-field Michael Montemurro, BlackBerry

More Related