TGaq Mini Tutorial Date: 2013-11-13 Authors: November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 TGaq Mini Tutorial Date: 2013-11-13 Authors: Stephen McCann, Blackberry Stephen McCann, Blackberry

Summary of Study Group and Task Group work to date. November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Abstract TGaq Mini-Tutorial Summary of Study Group and Task Group work to date. Stephen McCann, Blackberry Stephen McCann, Blackberry

November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Rationale Existing pre-association GAS provides little detail about network services. Current mechanisms sequentially associate to available networks for discovery purposes. These are time consuming and potentially inefficient. Existing peer to peer discovery mechanisms flood the channel with pre-association traffic. Need to reduce power consumption through the use of efficient signalling. Stephen McCann, Blackberry Stephen McCann, Blackberry

Study Group Phase Started November 2012 doc.: IEEE 802.11-13/1313r3 November 2013 Study Group Phase Started November 2012 Service Discovery concept appeared in Fall 2012 Device discovery well established GAS – Generic Advertisement Service ANQP – Access Network Query Protocol (11u) RLQP – Registered Location Query Protocol (11af) Considered mechanisms to discover available services provided by infrastructure. IMS – IP Multimedia Subsystem Printers Stephen McCann, Blackberry Stephen McCann, Blackberry

There is interest in service discovery in the industry November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 There is interest in service discovery in the industry IEEE 802.11 Created new TGaq based on PAR: 11-12-1081-06-0pad-draft-par-proposal.doc WFA Sent Liaison to WFA (Nov 2012) and requested feedback. 11-12-1389-00-0000-liaison-to-wfa-802-11aq-par.doc No comments were returned. IETF RFC 6763 – DNS Service Discovery Wireless Broadband Alliance Next Generation Hotspots, for network discovery and selection Stephen McCann, Blackberry Stephen McCann, Blackberry

November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 TGaq Scope This amendment defines modifications to the IEEE 802.11 standard, above the physical layer (PHY), to enable delivery of pre-association Service Discovery information by IEEE 802.11 stations (STAs). Stephen McCann, Blackberry Stephen McCann, Blackberry

Progress to date Use cases collected (22) Use case analysis document November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Progress to date Use cases collected (22) Use case analysis complete 11-13-0118-00-00aq-summary-of-pad-sg-use-cases.ppt Use case analysis document Main features of use cases at MAC layer 11-13-0125-06-00aq-use-case-analysis.docx Terminology document Re-using IEEE definitions where available 11-13-0299-03-00aq-draft-tgaq-terminology.docx Specification Framework Document In progress at an early stage 11-13-0300-01-00aq-proposed-specification-framework-for-tgaq.docx Stephen McCann, Blackberry Stephen McCann, Blackberry

November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Example Use Case You enter IEEE meeting hotel and want to find a printer You notice that there are many WLANs in the hotel Networks with printers: Hyatt: The hotel printer (free for hotel guest and 24/7 availability) Verilan: The printer in IEEE staff office (located in a secured environment, available 9am-5pm to non-IEEE-staff) FedEx/Kinko’s Office WLAN with one printer associated with (not free, office hours only; but has richer features) and many other networks (e.g. AT&T) without printers. association may require payment, only to discover that printer service is inappropriate Problem is to determine which network to use prior to selection: It is 1pm. You are sensitive to the security. It is 9pm. You want high-quality print-out and cost is not an issue. It is 11pm. You are sensitive to costs. Stephen McCann, Blackberry Stephen McCann, Blackberry

Initial Proposals Pre-association messages (PAD) November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Initial Proposals Pre-association messages (PAD) Likely to be based on GAS Container MAC protocol to carry upper layer service discovery protocols (e.g. UPnP, Bonjour) Provisioning and configuration of services in AP Proxy service server connected to AP Universal identification of services Use a hashing algorithm UUID, a reverse domain notation, a registry of service IDs. Broadcast Concept Advertisement of service information through broadcast frames. Stephen McCann, Blackberry Stephen McCann, Blackberry

Proposed Architecture for 802.11aq November 2013 Proposed Architecture for 802.11aq Extend 802.11u to support service discovery or Define a new Service Discovery Protocol? 802.11 Scope Not in Scope of 802.11 STA AP Service Service query protocol ANQP… GAS Probe Extend ANQP or define new service query protocol Up-layer service discovery protocol Stephen McCann, Blackberry

November 2013 November 2013 doc.: IEEE 802.11-13/1313r3 Stephen McCann, Blackberry Stephen McCann, Blackberry

Recapture: Two step service discovery November 2013 Recapture: Two step service discovery S2: Detailed Service Query Based on Service Indication Services from Network STA GAS AP STA Service Record Services from associated device S1: AP/Network Discovery + Service Indication Service Indication Service Indication, e.g. Service Bitmap Beacon Probe Probe response Stephen McCann, Blackberry

Other Concepts Peer Service Discovery (PSDisc) design framework November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Other Concepts Peer Service Discovery (PSDisc) design framework Independent mode discovery (few STAs) Server mode discovery (many STAs) Provisioning of Services by Associated STAs Registration with an AP or Proxy Server SoftAP operation Indicate provision of Internet connectivity Indicate upper layer support Lightweight and energy efficient method is desirable Pre-association discovery for neighboring APs Do PAD when the STA is still in association Stephen McCann, Blackberry Stephen McCann, Blackberry

Construction of Draft Build on Specification Framework Document November 2013 doc.: IEEE 802.11-13/1313r3 November 2013 Construction of Draft Build on Specification Framework Document Normative text submissions considered this week Stephen McCann, Blackberry Stephen McCann, Blackberry

Timeline – November 2013 Approval of PAR & 5C: November 2012 doc.: IEEE 802.11-13/1313r3 November 2013 Timeline – November 2013 Approval of PAR & 5C: November 2012 Initial TG meeting: January 2013 Initial Working Group Letter Ballot: July 2014 Re-circulation Working Group Letter Ballot: November 2014 Form Sponsor Ballot Pool: May 2015 Mandatory Editorial Check: November 2015 Initial Sponsor Ballot: November 2015 Sponsor Ballot Recirculation: January 2016 Final WG/EC Approval: May 2016 RevCom/Standards Board Approval: May 2016 Stephen McCann, Blackberry Stephen McCann, Blackberry