Adaptive polling technique

Details Adaptive polling technique Adaptive polling technique

1977-03-17

1978-01-31

Claffy, Kathleen H.

Boots, shoes, and leggings

178 2C, 179 18FG, 340147G, G06F 304, H04Q 500

Patent

active

040719081

ABSTRACT:
Messages are collected by a central polling station from a plurality of remote terminal stations on a multiparty line. The central polling station is arranged to initially query stations in groups, probing successively smaller size subgroups of each group if a station in the group returns an acknowledgement that it has a message and eventually addressing individual stations to collect the messages. In heavily loaded periods, when a large quantity of messages are available at the terminals, the polling station initially queries a smaller size subgroup (or in the extreme, initially addresses individual stations) while in lightly loaded periods, when few or no messages are available, the polling station initially queries a larger size group (or in the extreme, initially broadcasts a query to all of the terminals). Loading of the system is determined by measuring the duration of time required for polling and collecting all the available messages.

REFERENCES:
patent: 3890460 (1975-06-01), Haas et al.

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