Multiplex communications – Wide area network – Packet switching
Patent
1990-12-24
1993-06-15
Kuntz, Curtis
Multiplex communications
Wide area network
Packet switching
375 76, 455 88, H04J 324
Patent
active
052205649
ABSTRACT:
In a local area network station (12) for a wireless LAN, a threshold level circuit (62) includes a register (134) which stores a threshold value. The station receiver (42) monitors the transmission channel and provides a receive level signal indicative of the signal level received. Transmission of a data frame by the station transmitter (46) is permitted or deferred according as the receive level signal value is below or above the threshold level, regardless of whether or not the received signal derives from a transmission by a station in the receiving station's own LAN. The threshold is dynamically updated whenever the station (12) receives a data frame from its own LAN. An improved utilization of the wireless transmission channel is achieved.
REFERENCES:
patent: 2964908 (1961-01-01), Gray et al.
patent: 4593273 (1986-06-01), Narcisse
patent: 4613990 (1986-09-01), Halpern
patent: 4797948 (1989-01-01), Hilliorn et al.
Tuch Bruce T.
van Driest Hans
Ghebretinsae T.
Kuntz Curtis
NCR Corporation
Wargo Elmer
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