Patent ID: 6084868
Filing Date: 2000-07-04
Classification: H04W

Abstract:
A base station for a mobile communication system comprising one or more switching centers and base stations connected to it by telecommunication links, each base station comprising:an antenna for transmitting radio signals divided into time-slots by means of a frame structure, each time-slot having a plurality of parts;a controller unit for controlling the base station;frame alignment means for producing a frame alignment signal;a switch connected to the antenna;a transmitter for generating a transmission signal, the transmitter being connected to the switch to supply the transmission signal to the antenna via the switch;digital means for generating a digital signal to be modulated, the digital means comprising:a counter means for counting the length of time-slots in a frame structure synchronized by said frame alignment signal,a programmable memory means, in which one or more delay values are each stored as a counter value, andselecting means for selecting from said one or more delay values a delay value desired by the user;comparison means for comparing the value of said counter means with the selected delay value contained by the programmable memory means, and for starting transmission of information signals to be transmitted in said time-slot from the digital means, provided that the comparison provides the result that the selected delay value contained by said programmable memory means is the same as the value indicated by said counter means; anda power level memory responsive to said counter means and storing power level memory momentary power values corresponding to the parts of the time-slots in the frame structure, as well as information on whether the switch supplying the transmission signal of the transmitter to the antenna is switched off or on, or neither,said power level memory being arranged so that each part of the time-slot in a frame structure is represented by a specific memory address of the power level memory, and in the memory location corresponding to said memory address, in addition to momentary power values of the curve indicating the power level, information is stored on whether the switch supplying the transmission signal of the transmitter to the antenna is switched off or on, or neither.