CA2404922A1 - Registration of mobile packet data terminals after disaster - Google Patents

Registration of mobile packet data terminals after disaster Download PDF

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Publication number
CA2404922A1
CA2404922A1 CA002404922A CA2404922A CA2404922A1 CA 2404922 A1 CA2404922 A1 CA 2404922A1 CA 002404922 A CA002404922 A CA 002404922A CA 2404922 A CA2404922 A CA 2404922A CA 2404922 A1 CA2404922 A1 CA 2404922A1
Authority
CA
Canada
Prior art keywords
central system
terminal
disaster
registration
register
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002404922A
Other languages
French (fr)
Other versions
CA2404922C (en
Inventor
Andrew S. Wright
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Wireless Services Inc
Original Assignee
At&T Wireless Services, Inc.
Andrew S. Wright
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/662,716 external-priority patent/US6157633A/en
Application filed by At&T Wireless Services, Inc., Andrew S. Wright filed Critical At&T Wireless Services, Inc.
Publication of CA2404922A1 publication Critical patent/CA2404922A1/en
Application granted granted Critical
Publication of CA2404922C publication Critical patent/CA2404922C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]

Abstract

Registration attempts by a terminal using a contention protocol to communicate with a central system are controlled by transmitting a registration index from the central system to the terminal at specified temporal periods, and modifying the value of the registration index when the terminal should attempt to register with the central system. A mode flag is transmitted from the central system to the terminal at predetermined temporal intervals, and the value of the mode flag is modified when the central system is recovering from a disaster so that the terminal refrains from immediately attempting to register with the central system.
During disaster recovery, the terminal is able to associate itself with one of a plurality of sub-intervals. The central system transmits a sub-interval designator to the terminal at regular temporal periods during disaster recovery. The central system modifies the value of the sub-interval designator after a predetermined number of the regular temporal periods. The flow of registration attempts by a community of terminals is smoothed from a situation wherein essentially the entire community of terminals is contending to register after a disaster to a situation wherein subsets of the community try to register in respective sub-intervals after the disaster.
CA002404922A 1996-06-10 1997-05-06 Registration of mobile packet data terminals after disaster Expired - Fee Related CA2404922C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/662716 1996-06-10
US08/662,716 US6157633A (en) 1996-06-10 1996-06-10 Registration of mobile packet data terminals after disaster
CA002257423A CA2257423C (en) 1996-06-10 1997-05-06 Registration of mobile packet data terminals after disaster

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002257423A Division CA2257423C (en) 1996-06-10 1997-05-06 Registration of mobile packet data terminals after disaster

Publications (2)

Publication Number Publication Date
CA2404922A1 true CA2404922A1 (en) 1997-12-18
CA2404922C CA2404922C (en) 2007-11-13

Family

ID=38691882

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002404922A Expired - Fee Related CA2404922C (en) 1996-06-10 1997-05-06 Registration of mobile packet data terminals after disaster

Country Status (1)

Country Link
CA (1) CA2404922C (en)

Also Published As

Publication number Publication date
CA2404922C (en) 2007-11-13

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