KR970055967A - Downlink independent control channel strobe signal generator for personal communication terminal - Google Patents

Abstract

The present invention is directed to eight subscribers based on a control data number assigned through a base station and a reference clock of 13 MHｚ which is generated by the base station in transmitting control data from a base station to a terminal for a personal communication device such as a portable telephone. The present invention relates to a downlink independent control channel strobe signal generator of a personal communication terminal capable of generating a strobe signal for an independent control channel (SDCCH), and a bit synchronous signal corresponding to each data bit based on a 13 MH 13 clock signal. Generate a time slot synchronization signal having a period of 156.25 bits using the bit synchronization signal and the clock signal, and transmit and receive data when the count value of the time slot synchronization signal and the reference time slot number match. In addition to generating a time slot strobe signal for the time slot synchronization signal. The frame synchronization signal is generated using the timeslot number generated according to the coefficients, the frame synchronization signal is counted to generate the frame number, and then the frame number and the independent control channel number assigned to the eight subscribers are generated. By comparing the generated frame numbers and outputting the timeslot strobe signal corresponding to the period in which both data values coincide with each other, an independent control channel strobe signal for data transmission and reception for 8 subscribers is generated.

Description

Downlink independent control channel strobe signal generator for personal communication terminal

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

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

Claims (1)

A personal communication system configured to form a time slot of 156.25 bits with each data bit having a length of 48 clocks on the basis of a clock of 13MHｚ, comprising: clock generating means for generating a reference clock of 13MHｚ and the reference; A bit synchronous signal generating means for generating a bit synchronous signal based on a clock and a frame start signal, a time slot synchronous signal generating means for generating a time slot synchronous signal based on the bit synchronous signal and a reference clock, and the time slot synchronous signal A time slot number counting means for counting and outputting a current time slot number, a strobe signal corresponding to the assigned time slots based on the time slot number assigned from the outside and the time slot number counted by the time slot number counting means; Time slot strobe signal generating means for outputting, Time slot number outputting from said time slot number counting means Frame synchronous signal generating means for outputting a frame synchronous signal based on the frame, frame number counting means for outputting frame number data by counting the frame synchronous signal output from the frame synchronous signal generating means, and an independent control channel allocated to eight subscribers Downlink independent control channel frame number generating means for generating a downlink frame number for the independent control channel from the number; input by the frame number counted by the frame number counting means and the downlink independent control channel frame number generating means; Downlink independent control channel strobe signal of a personal communication terminal, comprising: an independent control channel strobe signal generating means for comparing a frame number to be used and outputting a timeslot strobe signal corresponding to a period in which both data values match Generator. ※ Note: The disclosure is based on the initial application.