Downlink traffic channel strobe signal generator for the assigned timeslot of personal communication terminal

摘要

In the present invention, a personal communication device such as a portable telephone includes a straw signal of a downlink traffic channel for a corresponding time slot based on a frame start signal transmitted from a base station and a time slot number allowed to be used. A apparatus for generating a downlink traffic channel strobe signal for an allocated timeslot of a personal communication terminal, which generates a bit synchronization signal corresponding to each data bit based on a 13 MHz clock signal. Using the clock signal, a time slot synchronization signal having a period of 156.25 bits is generated, and a downlink time slot strobe signal for data transmission and reception is generated by comparing a count value of the time slot synchronization signal with a time slot number assigned thereto. The current time slot number is based on the number of timeslot synchronization signals. Calculates the frame synchronization signal using the calculated time slot number, and then counts the frame synchronization signal to generate the frame number, and compares the frame number with the assigned frame number. After generating the signal, a downlink traffic channel strobe signal is generated for the assigned timeslot through a logical product of the downlink timeslot strobe signal.;※ Representative diagram: 5th