H - Electricity – 04 – J
Patent
H - Electricity
04
J
H04J 3/06 (2006.01) H04B 7/02 (2006.01) H04B 7/06 (2006.01) H04Q 7/22 (2006.01)
Patent
CA 2041948
The invention relates to a method for transmitting, in a time-multiplex radio communication system, for instance a GSM-type (Global System For Mobile Communication) 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.
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
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