Polling communication system

Details Polling communication system Polling communication system

1993-05-28

1997-01-28

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082552, 34082508, H04Q 100

Patent

active

055981500

ABSTRACT:
A parent node transmits a third specific message to child nodes as a broadcast message if a first specific message indicating the start of the child node collides with another message so that normal receiving cannot be performed. Then, the parent node sequentially transmits second specific messages to each child node and then receives responses to recognize the states of the children nodes. The parent node transmits a specific message indicating a realization of a sleeping state as a broadcast message to the children nodes, followed by transmitting a specific message when data to be transmitted from the child node has been generated. The parent node cancels the sleeping state when it receives the specific message.

REFERENCES:
patent: 4680583 (1987-07-01), Grover
patent: 4896151 (1990-01-01), Kuranami
patent: 5150114 (1992-09-01), Johansson
patent: 5204669 (1993-04-01), Dorfe
patent: 5250942 (1993-10-01), Nakayama

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