Method and apparatus for shedding load in a communications contr

Details Method and apparatus for shedding load in a communications contr Method and apparatus for shedding load in a communications contr

1987-02-09

1987-12-22

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

3408255, 34082551, H04Q 100

Patent

active

047149230

ABSTRACT:
A data communications system covers a geographic area divided into a plurality of non-overlapping zones and includes a general communications controller (GCC), a plurality of channel communications modules (CCM) and associated transmitters and receivers, and a plurality of portable radios. Messages carrying alphanumeric information are communicated between the GCC and the portable radios by way of a radio channel. Each CCM takes a signal strength measurement every time it receives a message from a portable radio. The GCC includes a multi-tasking processor that executes tasks on a priority basis. Inbound messages are processed on a high priority basis and are ignored if the GCC is overloaded and the inbound message is of the type that will be reasserted. Thus, by shedding inbound messages that will be re-asserted, the GCC can accomodate peak message loads demanding 100% of its capacity without becoming unstable.

REFERENCES:
patent: 4332027 (1982-05-01), Malcolm et al.
patent: 4543540 (1985-09-01), Linder

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