초록 ▼

For implementing frequency-hopping in a base station, of a digital cellular radio system a first signal modulated by a base band data signal and transmitted on a first carrier frequency. The signal is divided in the time domain into several time slots, of which one time slot transmits the common con

For implementing frequency-hopping in a base station, of a digital cellular radio system a first signal modulated by a base band data signal and transmitted on a first carrier frequency. The signal is divided in the time domain into several time slots, of which one time slot transmits the common control channel of the base station equipment and the other time slots transmit information regarding different connections. For an economical implementation of frequency-hopping in a base station having one transceiver unit, the base station further transmits a second signal modulated by the same base band data signal, on a second carrier frequency. The second signal is divided in the time domain into several time slots, each of which transmits the same information as the first signal, except the time slot that transmits the common control channel of the base station equipment. The second carrier frequency (27) is changed time-slot-specifically so that its frequency is the same as, or different from, the first carrier frequency.

대표청구항 ▼

[ I claim:] [1.] A base station equipment in a digital cellular radio system, said equipment comprising:means for generating a base band data signal;a first means for transmitting a signal modulated by a first carrier frequency, said signal being divided in the time domain into several time slots of

[ I claim:] [1.] A base station equipment in a digital cellular radio system, said equipment comprising:means for generating a base band data signal;a first means for transmitting a signal modulated by a first carrier frequency, said signal being divided in the time domain into several time slots of which one transmits a common control channel of the base station equipment and the other time slots transmit information regarding different connections;an antenna;a second means for transmitting a signal modulated by a second carrier frequency;elements for changing said second carrier frequency time-slot-specifically; andmeans for distributing said base band signal to the first and the second transmitting means so that the signal transmitted by said second means is divided in the time domain into several time slots of which each transmits the same information as the signal transmitted by said first means, except said time slot that transmits the common control channel of the base station equipment.