method taajuushyppelyn implementation and tukiamenetelmä taajuushyppelyn implementation and the tukiasemalaitteisto semalaitteisto

摘要

PCT No. PCT/FI95/00142 Sec. 371 Date Jan. 31, 1996 Sec. 102(e) Date Jan. 31, 1996 PCT Filed Mar. 16, 1995 PCT Pub. No. WO95/26040 PCT Pub. Date Sep. 28, 1995For 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.