Antenna control for a wireless local area network station

Details Antenna control for a wireless local area network station Antenna control for a wireless local area network station

1990-12-24

1992-11-17

Kuntz, Curtis

Multiplex communications

Wide area network

Packet switching

370 852, H04J 324

Patent

active

051649420

ABSTRACT:
A local area network station (12) includes a transceiver (20) adapted to transmit and receive signals using electromagnetic radiation on a wireless communication link. The station (12) utilizes a CSMA/CD communications controller (22) in a CSMA/CA (collison avoidance) technique wherein deferred data frames are transmitted after a random number of backoff slots periods. A plurality of antennas (14, 16) is employed, with the antenna having the best receive conditions being selected for reception of a data frame. The antennas having a slotting control (200) which is synchronized with the backoff slotting to provide a short carrier detect time and hence high throughpout.

REFERENCES:
patent: 4409592 (1983-10-01), Hunt
patent: 4661902 (1987-04-01), Hochsprung et al.
patent: 4979168 (1990-12-01), Courtois et al.
patent: 5046066 (1991-09-01), Messenger
J. L. Hammond and J. P. O'Reilly, Performance Analysis of Local Computer Networks (Addison-Wesley Publishing Company), 1986, pp. 304-337.

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