Multiplex communications – Wide area network – Packet switching
Patent
1983-04-25
1985-04-23
Griffin, Robert L.
Multiplex communications
Wide area network
Packet switching
455 33, 455101, 455134, 343361, H04B 702
Patent
active
045134120
ABSTRACT:
The present invention relates to a portable transceiver and a remote terminal station each using at least two antennas with different polarization transmission capabilities for an adaptive retransmission technique. In the present adaptive retransmission technique, the terminal station transmits the same preamble signal in at least two time slots of a frame period of a time division sequence using the antenna receiving the strongest signal from the transceiver in the immediately prior frame period followed by a binary message signal using the same antenna. The transceiver receives each of the preamble transmissions from the terminal station via a separate one of differently oriented antennas and determines which antenna received the strongest signal. The message signal from the terminal station is then received via the antenna of the transceiver having received the strongest signal and also sends its response message signal on that antenna during a separate time slot of a frame period.
REFERENCES:
patent: 2694141 (1954-11-01), Mitchell
patent: 3631494 (1971-12-01), Gans et al.
patent: 3693088 (1972-09-01), Rustako, Jr. et al.
patent: 3696421 (1972-10-01), Bitler
patent: 4041397 (1977-08-01), Bauer et al.
patent: 4057758 (1977-11-01), Hattori et al.
patent: 4083009 (1978-04-01), Bickford et al.
patent: 4128809 (1978-12-01), Kage
patent: 4317218 (1982-02-01), Perry
patent: 4383332 (1983-05-01), Glance et al.
Vigants, A. "The Number of Fades in Space-Diversity Reception", BSTJ, vol. 49, No. 7, Sep. 1970, pp. 1513-1530.
Yeh, Y. S., "An Analysis of Adaptive Retransmission Arrays in a Fading Environment", BSTJ, vol. 49, No. 8, pp. 1811-1825, Oct. 1970.
Lee, Y., "Polarization Diversity System for Mobile Radio", IEEE Trans. on Communications, vol. COM-21, No. 6, pp. 912-923, Oct. 1972.
Bitler, J. S. et al., "A Mobile Radio Single-Frequency `Two-Way` Diversity System Using Adaptive Retransmission from the Base", Nov. 1973.
W. C. Jakes, Jr., "Microwave Mobile Communications", John Wiley & Sons, pp. 311, 399-401, 1974.
Henry, P. S. et al., "A New Approach to High-Capacity Digital Mobile Radio", BSTJ, vol. 60, No. 8, pp. 1891-1904, Oct. 1981.
AT&T Bell Laboratories
Greer Timothy K.
Griffin Robert L.
Pfeifle Erwin W.
LandOfFree
Time division adaptive retransmission technique for portable rad does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time division adaptive retransmission technique for portable rad, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time division adaptive retransmission technique for portable rad will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-40299