1. doc.: IEEE 802.11-13/0429r1 Submission TGaq Design Options for IBSS Date: 2013-05-15 May 2013 Joe Kwak, InterDigitalSlide 1 Authors:

2. doc.: IEEE 802.11-13/0429r1 Submission Summary The design options discussed at prior 11aq meetings may be adequate for service discovery for BSS use cases. However several use cases are clearly IBSS cases and are not served by options noted in 13/0057r2. This presentation expands the design options under discussion to include the IBSS use cases for PAD. May 2013 Joe Kwak, InterDigitalSlide 2

3. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 3 At home or at work, our BSS networks satisfy our needs. BUT AT ALL OTHER TIMES, we are on the move and our mobile WiFi devices have no “home network” with which to associate. –Commuting: waiting for the bus, in the subway, on the street... –In public places: malls, restaurants, stadiums, etc –While waiting: in dentist office, at a hospital, in a restaurant, in customs line at airport.... We fidget with our phones, check messages and mails, but have no way to discover the WiFi services in the devices all around us. These OTHER TIMES may be brief but are perfect for new diversions and recreations: –Find your Facebook/LinkedIn friends in the immediate area –Play a game you really enjoy with a fellow traveller in the waiting line –Chat/rant with others in local IBSS chat room –Share your music, pictures and favorite videos A richer personal life may enabled by IBSS PAD to find these new connections and diversions to enjoy in our otherwise idle moments, when out of reach of a BSS. May 2013 IBSS is important in many aspects of our lives

4. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 4 For BSS discovery, services are provided by network –User needs service info about access network options Which APs offer which SP connections? Which APs have available BW and admission capacity? Which APs have connection to services user seeks?....etc. –PAD access to ANQP info and legacy discovery protocols provide all of these. For IBSS discovery, services are provided by peers –User needs service info about peers in radio range IBSS formation limited by radio range. All STAs in IBSS communicate with eachother. Peer service information is needed –User’s available sharing applications (services) –User’s handle and membership level –User’s MAC ID for possible P2P connection May 2013 PAD discovery works differently in BSS and IBSS

5. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 5 #21 Max needs a cab: User is in transit on the metropolitan street and has an Taxi application for P2P connection to other STAs with same Taxi application. #23 Gaming: User searching for peer STA with same gaming app. Airline lounge has AP which facilitates discovery of peer for P2P connection. BUT for airline lounge without AP, use case requires IBSS discovery of same peer. #8, #11, and #20 are use cases accessing free public information which could also easily be accommodated by IBSS model. No actual BSS association is needed if use case is satisfied in IBSS with P2P connection. May 2013 13/0125r4: PAD use cases in an IBSS

6. doc.: IEEE 802.11-13/0429r1 Submission May 2013 Joe Kwak, InterDigitalSlide 6 11-13-0057-02-00aq-design-options describes simple methods to provide PAD service discovery for BSS cases –Simple new protocol using a Discovery Proxy Server (DPS) as intermediary for STAs in pre-associated state. The intermediary provides discovery using existing discovery protocols, e.g. UPnP, bonjour etc. –GAS protocol may also be used for network service advertisements –New ANQP/GAS information items may also be created. These options will not work well for IBSS use cases –Without DS access, IBSS STAs cannot communicate with DPS. –In a BSS, GAS/ANQP services are provided by an AP or a network based server. IBSS STAs do not communicate with an AP and have no internet access to servers. –Though the GAS framework allows advertising in IBSS, no protocol is defined to describe how this can work in a dynamic IBSS, serving mobile smartphones and other transient STAs Discussed options inadequate for IBSS cases

7. doc.: IEEE 802.11-13/0429r1 Submission May 2013 Joe Kwak, InterDigitalSlide 7 IBSS PAD use cases require additional options GAS/ANQP may work for IBSS but would require: –Adverts would need new information elements describing each possible service, or alternatively a new, flexible service description which could describe any possible service. –ANQP advertised elements are mostly preconfigured, of fixed size, and when not fixed are limited in size by 2 octet length field. May not be adequate for transporting aggregated service descriptors for a dynamic IBSS. –If a modified framework for ANQP were used, the standard would need to define protocol for IBSS to collect the relevant service availability information to populate the ANQP items for the current members of the IBSS. May need to define protocol to dynamically create new ANQP advertisements in a constantly changing IBSS.

8. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 8 Most IBSSs would be ad-hoc networks of battery operated mobiles. Power efficiency is a more crucial requirement in IBSS than in BSS. IBSS discovery needs to be scalable for use in large public venues. Hundreds and more users in streets, halls, and stadiums, most of which are not served by traditional WiFi APs. Similar to beaconing in IBSS, power burden for PAD discovery needs to be distributed among all users of IBSS discovery. Similar to ATIM window in IBSS, access to IBSS discovery needs to be synchronized for power savings. May 2013 PAD for IBSS has some unique requirements

9. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 9 Pre-association discovery use cases include discovery where no BSS may exist. Pre-association discovery in an IBSS is an important complement to PAD in the BSS cases. The goal of pre-association discovery is different for BSS (network services) and IBSS (peer services). IBSS PAD may have unique requirements. TG 11aq can provide solutions for pre-association discovery in both BSS and IBSS. May 2013 Conclusions

10. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 10 Thank you. May 2013 Discussion and Questions

11. doc.: IEEE 802.11-13/0429r1 SubmissionJoe Kwak, InterDigitalSlide 11 Should 11aq amendment include provisions for PAD IBSS use cases? Yes No Need more information Would you be willing to collaborate with others to jointly develop a PAD proposal for IBSS? Yes No Undecided/maybe May 2013 STRAWPOLLS