EP0472349A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Autonomous registration overload control for cellular mobile radio systems
Assignee: AT&T Inc
•
Filing: 1991-08-13
•
Granted: —
•
Expires: 2011-08-13
Abstract
Abstract Registration signal channel overloads occurring due to overly numerous autonomous registration messages initiated by the mobile radiotelephones are averted by monitoring the number of autonomous registrations occurring or requested in a particular local cellular system and responding in the event of an impending overload by sending messages to specified mobile radiotelephones instructing them not to register at this time. In one implementation disclosed herein the roamer mobile radiotelephones requesting registration within an area covered by a cellular system facing an impending overload are instructed, via an overhead message, not to register. Allowance of registration is not permitted until the overload condition is terminated. In another implementation the period between autonomous registrations is increased until the overload is cleared.
Inventors
- 👤 Phyllis Cosentino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 11:34
CPC Classifications
H; H04; H04W; H04W8/00; H04W8/02; H04W60/00; H04W60/02; H04W24/00; H04W24/04; H04W28/00; H04W28/02; H04W48/00; H04W48/02; H04W48/06; H04W60/001
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
106 words
A method of registration for mobile radiotelephones in a wireless telephone system in which mobile radiotelephones in a system identified area communicate over radio channels with a base station providing coverage of the system identified area and the wireless telephone system is coupled in tum to a land switched telephone network, comprising the step of instructing mobile radiotelephones to register over a designated overhead radio channel, and CHARACTERISED BY the steps of monitoring registration requests over the overhead radio channel, identifying the attainment of an overload condition in autonomous registration requests, and inhibiting acceptance of registration requests from mobile radiotelephones when the overload condition is identified.
Claim 2
Dependent Claim
58 words
A method as claimed in claim 1 wherein the step of monitoring the registrations over the overhead radio channel comprises the step of counting the number of autonomous registration requests within a defined time interval, and the step of identifying the attainment of an overload condition comprises the step of comparing the count to a preset threshold count.
Claim 3
Dependent Claim
41 words
A method as claimed in claim 1 or 2 wherein the step of inhibiting acceptance of registration requests from mobile radiotelephones comprises the step of inhibiting autonomous registrations of roamer mobile radiotelephones and permitting autonomous registrations of homer mobile radio telephones.
Claim 4
Dependent Claim
53 words
A method as claimed in claim 3 comprising the steps of continuing to monitor autonomous registration requests of homer mobile radiotelephones, counting the number of autonomous registration requests within a defined time interval, and inhibiting autonomous registrations of homer mobile radiotelephones if the number of autonomous registration requests counted exceeds a threshold count.
Claim 5
Dependent Claim
107 words
Apparatus for controlling registrations of mobile radiotelephones of a cellular telephone system, comprising a radio communication station for coupling mobile radiotelephones with a land switched telephone network, means for maintaining a list of mobile radiotelephones served by the radio communication station, means for broadcasting instructions to mobile radiotelephones to cause available mobile radiotelephones within coverage area of the radio communication station to request registration permitting an update of the means for maintaining, and CHARACTERISED BY means for monitoring registration requests and determining if an overload condition occurs, and means for selectively preventing registration requests of the mobile radiotelephones if the means for monitoring determines an overload condition.
Claim 6
Dependent Claim
41 words
Apparatus as claimed in claim 5 wherein the means for monitoring registration requests and determining if an overload condition occurs comprises means for counting registration requests within a time interval, and means for comparing the count with a preset threshold count.
Claim 7
Dependent Claim
30 words
Apparatus as claimed in claim 5 or 6 wherein the means for selectively preventing registration requests of the mobile radiotelephones comprises means for preventing registration requests from roamer mobile radiotelephones.
Claim 8
Dependent Claim
35 words
Apparatus as claimed in claim 5, 6 or 7 wherein the means for selectively preventing registration requests of the mobile radiotelephones comprises means for reducing a rate at which mobile radiotelephones are instructed to register.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.