Communication network polling technique

Details Communication network polling technique Communication network polling technique

1987-05-08

1989-05-09

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

340825510, 340825500, 370 90, H04Q 900

Patent

active

048292974

ABSTRACT:
In a communication network wherein a master station periodically polls a number of remote stations to determine whether or not each remote station has data to transmit to the master, each of the remote stations is assigned to one two groups. One of the groups is designated as priority stations which commonly have very urgent data for the master station. The group of non-priority stations is sequentially polled for messages to be sent to the master station. The polling of the group of non-priority stations is periodically interrupted so that the master station may poll each of the stations in the priority group to determine if they have messages to send. Upon the completion of the polling of the priority stations, the polling of the non-priority stations is resumed. Periodically a time period occurs for inactive stations to join one of the two groups of stations on the network. This method permits stations that typically have high priority data, to transmit that information more frequently than would be possible if only one polling group of stations existed.

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