The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2001
Filed:
Jul. 30, 1998
Zohar Naor, Tel Aviv, IL;
Hanoch Levy, Tel Aviv, IL;
Abstract
A method for tracking users of a cellular communications network in which the network pages users according to registration messages received from the users. Within each location area of the network, the cells are assigned identities. The cells broadcast codes representative of those identities to the users. In a first preferred embodiment, the identities facilitate the computation, by the users, of distance traveled. Each user transmits a registration message only after traveling a certain distance. In a second preferred embodiment, neighboring cells have different identities. Each user transmits a registration message only after exceeding a threshold number of transits from one cell to another. In a third preferred embodiment, each cell is assigned a unique identity. Each user transmits registration messages periodically, but only if the cell in which the user is located has changed since the last registration transmission.