KR970058151A - Downlink independent control channel data strobe signal generator of personal communication terminal - Google Patents

Abstract

The present invention relates to four subscribers based on a control data number assigned through the base station and a 13 MHz reference clock generated by the base station in transmitting control data from the base station to the terminal for a personal communication device such as a mobile phone. The present invention relates to a downlink independent control channel data strobe signal generator of a personal communication terminal capable of generating a data strobe signal for an independent control channel (SDCCH), and a bit synchronization corresponding to each data bit based on a 13 MHz clock signal. Generating a time slot synchronizing signal having a period of 156.25 bits using the bit synchronizing signal and the clock signal, generating a 148-bit signal, and counting and reference time of the time slot synchronizing signal; When slot numbers match, generate time slot strobe signal for data transmission and reception. Logically combine with the existing 148-bit signal to generate a data strobe signal for the corresponding timeslot, and generate a frame synchronization signal using the timeslot number generated according to the coefficient of the timeslot synchronization signal. A frame number is generated by counting a synchronization signal, and the time slot strobe signal corresponding to a period in which both data values coincide by comparing the frame number and the frame number generated based on the independent control channel numbers assigned to the four subscribers. By outputting this, a downlink independent control channel data strobe signal for data transmission and reception for four subscribers is generated.

Description

Downlink independent control channel data strobe signal generator of personal communication terminal

Since this is an open matter, no full text was included.

1 is a system diagram showing the overall configuration of a personal communication system,

5 is a circuit diagram showing the configuration of a downlink independent control channel data strobe signal generator of a personal communication terminal according to an embodiment of the present invention.

Claims (2)

A personal communication system configured to form a time slot with 156.25 bits and each data bit with a length of 48 clocks based on a 13 MHz clock, comprising: clock generating means for generating a reference clock of 13 MHz; Bit synchronous signal generating means for generating a bit synchronous signal based on a clock and a frame start number, time slot synchronous signal generating means for generating a time slot synchronous signal based on the bit synchronous signal and a reference clock, and counting the bit synchronous signal 148-bit signal generating means for outputting the corresponding bit signal when it becomes 148, time slot number counting means for counting the time slot synchronization signal, and outputting a current time slot number, the assigned time slot number and the time slot number counting. When the timeslot number counted by the means coincides, the corresponding time is obtained through logical combination with the 148-bit signal generating means. Data strobe signal generating means for outputting a data strobe signal corresponding to the lot, frame synchronous signal generating means for outputting a frame synchronous signal based on the time slot number outputted from the time slot number counting means, and the frame synchronous signal generating means from Frame number counting means for counting the output frame synchronization signal and outputting frame number data; Downlink independent control channel frame number for generating downlink frame number for independent control channel from independent control channel numbers assigned to four subscribers Independent control channel data strobe signal generating means for outputting a data strobe signal corresponding to the assigned time slot in a period in which the frame number counted by the generating means and the frame number counting means coincides with the downlink independent control channel frame number; Configured including Downlink independent control channel data strobe signal generator of a personal communication terminal, characterized in that. 2. The apparatus of claim 1, wherein the downlink independent control channel frame number generation unit multiplexer means for selectively outputting reference data set according to input of 2-bit independent control channel number data allocated to four subscribers, and the multiplexer. And adding means for outputting the frame number corresponding to the corresponding independent control channel of four frames by sequentially adding 1 to 0 to 3 to the frame number output from the means. Control channel data strobe signal generator. ※ Note: The disclosure is based on the initial application.