Method of maintaining access authorization using a bulletin boar

Details Method of maintaining access authorization using a bulletin boar Method of maintaining access authorization using a bulletin boar

1994-11-08

1996-09-03

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 331, 455 542, H04B 700

Patent

active

055533159

ABSTRACT:
A bulletin board coordinates the service authorization for other communication systems. Service authorizations are periodically updated, with authorized communication units returning to the bulletin board at pre-scheduled times to receive the updates that extend service authorization for authorized communication services. The bulletin board transmits authorization information on known communication resources at predetermined times known only by authorized communication units.

REFERENCES:
patent: 5301359 (1994-04-01), Van den Heuvel et al.
patent: 5361397 (1994-11-01), Wright
patent: 5434563 (1995-07-01), Kudoh
patent: 5465392 (1995-11-01), Baptist et al.

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