Path: utzoo!mnetor!uunet!husc6!yale!cmcl2!nrl-cmf!ames!ucsd!sdcsvax!darrell@Odin.UCSD.EDU From: darrell@Odin.UCSD.EDU (Darrell Long) Newsgroups: comp.os.research Subject: Hilbert's revenge #4 Message-ID: <4782@sdcsvax.UCSD.EDU> Date: 22 Mar 88 02:20:51 GMT Sender: nobody@sdcsvax.UCSD.EDU Lines: 12 Approved: comp-os-research@ucsd.edu I haven't gotten a lot of response to this one, so I'll throw something in. #4 How do you locate a mobile object in a large-scale distributed system? Consider for example the Cellular phone network. It is easy for a mobile station to make a call to a fixed location (a home or business), but suppose that our friend is driving across country and his wife wants to call him? How does the network find a mobile station whose last known location was San Diego but may now be in Las Vegas? DL