Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2007-10-30
2007-10-30
Hong, Harry S. (Department: 2614)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C340S539130, C379S201060, C455S456500, C455S456600
Reexamination Certificate
active
10405829
ABSTRACT:
A system and method are provided to alert two mobile communications users in the event they come in close proximity to one another. The present system uses a distributed algorithm denoted as the Strips algorithm, in which a pair of moving friends with mobile telecommunications devices makes an agreement about a static buffering region between them. After the agreement is made, the users do not need to follow each other's location until one of them enters the buffering region for the first time. By doing so, they invalidate the agreement. Consequently, they replace a location update message between them, determine if they got within the vicinity of each other, and otherwise make a new agreement on a new buffering region. When one of them enters the buffering region for the first time, a message is sent to both friends alerting them of the proximity of the other.
REFERENCES:
patent: 6327535 (2001-12-01), Evans et al.
patent: 6347095 (2002-02-01), Tang et al.
patent: 6539232 (2003-03-01), Hendrey et al.
patent: 6542748 (2003-04-01), Hendrey et al.
patent: 6542750 (2003-04-01), Hendrey et al.
patent: 6639516 (2003-10-01), Copley
patent: 7058385 (2006-06-01), Lauper
patent: 2002/0057283 (2002-05-01), Biswas et al.
patent: 2002/0086676 (2002-07-01), Hendrey et al.
patent: 2002/0107008 (2002-08-01), Hendrey et al.
patent: 2002/0111173 (2002-08-01), Hendrey et al.
patent: 2002/0114350 (2002-08-01), Tang et al.
patent: WO99/23623 (1999-05-01), None
Roy Want et al., “The Active Badge Location System,” ACM Transactions on Information Systems, vol. 10, No. 1, Jan. 1992, pp. 91-102.
Justin Lin, “Locator: Increasing Location Awareness,” Massachusetts Institute of technology 2002.
Matthew A. Peretz, “ATT Wireless' mMode Lets User ‘Find Friends’,” http://WWW.allnetdevices.com/wireless
ews/2002/06/27/att—wireless.html, available on the Internet as of Oct. 9, 2002.
Alexander Leonhardi et al., “A Comparison of Protocols for Updating Location Information,” Mar. 2000.
Dieter Pfoser et al., “Querying the Trajectories of On-Line Mobile Objects,” A Time Center Technical Report, Jun. 6, 2001.
Julien Basch et al. “Data Structures for Mobile Data,” Proceedings of the Eighth Annual ACM-SIAM Symposium on Discrete Algorithms 1997, pp. 747-756.
Prasad Sistlaa et al. “Modeling and Querying Moving Objects,” Proceedings of the IEEE International Conference on Data Engineering, (ICDE) pp. 422-452, Birmingham UK, Apr. 1997.
Simonas Saltenis et al., “Indexing the Position of Continuously Moving Objects,” Technical Report R-99-5009, Dept. of Computer Science, Aalborg University, 1999.
Amir Arnon
Efrat Alon
Cantor & Colburn LLP
Hong Harry S.
Tennet Pete
LandOfFree
System and method for detecting proximity between mobile... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for detecting proximity between mobile..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for detecting proximity between mobile... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3856396