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LocByRef Use Cases

LocByRef Use Cases. Rohan Mahy November 28, 2006. Definition. LIS = combination of an LG (Location Generator) and an LS (Location Server) pawn ticket URL = reference with random component. possession = authorization.

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LocByRef Use Cases

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  1. LocByRef Use Cases Rohan Mahy November 28, 2006

  2. Definition • LIS = combination of an LG (Location Generator) and an LS (Location Server) • pawn ticket URL = reference with random component. possession = authorization. • authenticated URL = reference which requires authentication from specific user or group or users.

  3. Presence Server • Presence server uses LbyR to subscribe to location from LIS • watcher 1 subscribes to loc/pres value from pres server • watcher 2 clicks “find out where I am right now” on target’s web page. web page fetches location from pres server using a reference to an authenticated URL my web page watcher 2 LIS fetch subscribe watcher 1 pres server subscribe target

  4. Emergency • If target isn’t mobile, it should provide LbyV • If target is mobile, it should provide LbyR. PSAP should subscribe to the location using a pawn ticket URL • going directly to the LG eliminates extra machinery • does the proxy need to fetch the current location too? Or is an initial value good enough? subscription LIS PSAP fetch ? proxy / SR target

  5. Pizza • Two ways to provide a ref to Pizza Place • ref resolving to LIS • ref resolving to PS • Looks like this would always be a fetch. So, LbyR does not look compelling for Pizza delivery (use LbyV instead) LIS pizza place pres server target

  6. Navigation target/ watcher • My navigation server probably has special relationship with me. Often target (me) will point its nav server directly at LIS. (Most likely subscription but could be fetch) • I visit a city and go on a tour. I do not want to offer direct LIS access to the tourism nav server, so I provide a pawn ticket URL from my presence server. (Could be either but more likely a fetch) subscribe or fetch my nav server LIS subscribe pres server tourismnav server subscribe or fetch target

  7. Tracking • Tracking Server wants to keep track of all resources all the time. Needs to subscribe to location (probably from LIS). Tracker 1 can subscribe or fetch current location • Tracking app/web page just fetches location whenever tracker 2 asks for current location of a resource tracking app/ web page tracker 2 fetch fetch LIS subscribe tracking server tracker 1 subscribe or fetch target

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