Method of transmitting different commands relating to the choice

Details Method of transmitting different commands relating to the choice Method of transmitting different commands relating to the choice

1991-05-03

1993-05-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 951, 3701054, 375114, 375116, 455 10, 455 521, 455 522, 455 523, 455101, H04B 706

Patent

active

052126897

ABSTRACT:
The invention relates to a method for transmitting in a time multiplex radio communication system, for instance, a GSM-type mobile telephony system, different commands from a movable station to a fixed station with respect to the selection of transmitter antenna in the fixed station. Each transmission sequence from the movable station includes a synchronizing word which consists of a predetermined number of binary bits. The different commands are transmitted by using different synchronizing words in dependence on the command to be transmitted. The movable station has access to at least two different synchronizing words. The synchronizing words used in addition to a standard synchronizing word are formed by the binary bits from the standard synchronizing word being shifted laterally to mutually different extents and/or in mutually different directions in order to generate different, new synchronizing words. In this way, there is formed in the receiver of the fixed station an impulse response having a pulse which occurs at different time points depending on which synchronizing word was used by the movable station.

REFERENCES:
patent: 3693088 (1972-09-01), Rustako, Jr. et al.
patent: 4599734 (1986-07-01), Yamamoto
patent: 4710944 (1987-12-01), Nossen
patent: 5054035 (1991-10-01), Tarallo et al.

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