Registration of mobile packet data terminals after disaster
June 10, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesNetworked cellular radiotelephone systems Telephone registration and cancellation control in a wide area cordless telephone system Communication system Autonomous registration overload control for cellular mobile radio systems 5237570 Wireless local area network communications system Data transfer method and apparatus for communication between a peripheral and a master Method and system for handling improper registrations Random access satellite communication system using random numbers generated in a range variable with channel traffic Access protocol for a common channel wireless network InventorAssigneeApplicationNo. 662716 filed on 06/10/1996US Classes:370/349, Using messages having an address field as header370/447, Arbitration for access between contending stations370/462, Arbitration for access to a channel455/435.1, Registration455/466Auxiliary data signaling (e.g., short message service (SMS))ExaminersPrimary: Nguyen, ChauAssistant: Hyun, Soon-Dong International ClassH04Q 007/00AbstractRegistration 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.Other References
Field of SearchSignaling (ancillary to main information)Superimposed or modulated on principal information Information superimposed on other information Communication over free space Transmit/receive interaction control Polling Multiple access (e.g., TDMA) Channel reservation scheme Using messages having an address field as header With priority resolution Carrier sense multiple access (CSMA) Using time slots Arbitration for access between contending stations Arbitration for access to a channel Arbitration for access between contending stations Auxiliary data signaling (e.g., short message service (SMS)) | |
