Claims
- 1. A simulcasting transmitter control apparatus for use in a base station of a mobile telecommunication system, said base station being provided with a plurality of transmitters each having its own delay characteristic and with a base station control unit providing a set of control data, said control data being usable in simulcasting of a multiplicity of radio frequency signals of the same channel in a reiteration cell area in which outputs of said transmitters are overlapped to each other in a certain area, said simulcasting transmitter control apparatus comprising:
- means for inputting said control data;
- means for generating a reference clock;
- means for generating a plurality of delayed clocks divided from said reference clock; and
- delay means responsive said control data for delaying a transmission of paging data to a paging receiver by setting a delay time period in accordance with said control data in synchronization with said delayed clocks, so that the simulcasting of said multiplicity of radio frequency signals of the same channel in the reiteration cell area is carried out in said plurality of transmitters.
- 2. The simulcasting transmitter control apparatus according to claim 1, wherein said means for inputting said control data comprises a controller for controlling the entire operation of said transmitter, receiving the control data from said control unit of the base station, said delay time period of said delay unit compensating for the delay characteristic of said transmitters, and therefrom generating a control signal to control the time delay for the outputs of the respective transmitter.
- 3. The simulcasting transmitter control apparatus according to claim 2, further comprised of an interfacing unit including a delaying circuit unit for delaying transmission of the paging data received thereto responsive to the control signal from said controller.
- 4. The simulcasting transmitter control apparatus according to claim 3, further comprised of a frequency modulation unit coupled to said interfacing unit, for modulating the delayed paging signal under control of said controller.
- 5. A simulcasting transmitter control apparatus for use in a base station of a mobile telecommunication system, said base station being provided with a plurality of transmitters each having its own delay characteristic and with a base station control unit providing a plurality of control data, said simulcasting transmitter control apparatus comprising:
- a unit for inputting said control data, said control data being usable in simulcasting of a multiplicity of radio frequency signals of the same channel in a reiteration cell area in which outputs of said transmitters are overlapped to each other in a certain area;
- a unit for generating a reference clock;
- a unit for generating first and second delayed clocks divided from said reference clock;
- a first delay unit for receiving said control data from said base station control unit, setting a first delay time period in accordance with a given one of said control data, and delaying outputting of paging data from said transmitters of the base station by said first delay time period in synchronization with said first delayed clock; and
- a second delay unit operable in association with said first delay unit, for receiving said control data from said base station control unit, setting a second delay time period in accordance with another given one of said control data, and delaying outputting of the paging data from said transmitters by said second delay time period in synchronization with said second delayed clock, whereby the simulcasting of said multiplicity of paging data signals of the same channel in the reiteration cell area is carried out in said plurality of transmitters.
- 6. The simulcasting transmitter control apparatus according to claim 5, further comprised of an interfacing unit including a delaying circuit unit for generating said first delayed clock and said second delayed clock.
- 7. The simulcasting transmitter control apparatus according to claim 5, wherein a frequency of said first delayed clock is higher than that of said second delayed clock.
- 8. A method for controlling simulcasting of paging information over a same channel from each of a plurality of transmitters, each having its own delay characteristic, associated with a common base station of a mobile telecommunication system, said method comprising the steps of:
- comparing a first channel of paging data from an encoder of said base station to a second channel of paging data from said transmitter to measure a delay characteristic of said transmitter;
- generating control data for controlling said transmitter, said control data including time delay control data, generated in response to said delay characteristic of said transmitter, for controlling a time delay of said transmitter;
- generating a reference clock signal;
- dividing said reference clock signal to generate a first clock signal and a second clock signal, said first and second clock signals each being different from each other and less than a frequency of said reference clock signal;
- dividing said first clock signal to generate a first delayed clock signal having a frequency less than said first clock signal;
- dividing said second clock signal to generate a second delayed clock signal having a frequency less than said second clock signal;
- storing paging data from said base station into a first variable length shift register in response to said second delayed clock and delaying the output of said paging data from said first variable shift register in response to said time delay control data; and
- storing delayed paging data output from said first variable shift register into a second variable length shift register in response to said second delayed clock and delaying the output of said paging data from said second variable shift register in response to said time delay control data and said first delayed clock, the output of said paging data from said second variable shift register being provided to said transmitter.
Priority Claims (1)
Number |
Date |
Country |
Kind |
96-9909 |
Apr 1996 |
KRX |
|
CLAIM OF PRIORITY
This application makes reference to, incorporates the same herein, and claims all benefits accruing under 35 U.S.C .sctn.119 from an application entitled Transmission Controller For Transmitters In Base Station For Mobile Telecommunication System earlier filed in the Korean Industrial Property Office on Apr. 2, 1996, and there duly assigned Ser. No. 96-9909 by that Office.
US Referenced Citations (10)