Method and apparatus for generating a transmission timing signal in a

Abstract

In a wireless telephone of a mobile communication system, which performs transmission in a series of bursts, in synchronism with a receive signal transmitted from a base station, each transmission burst being performed responsive to a transmission timing signal, a sync signal is detected from the receive signal, the transmission timing signal is generated on the basis of the sync signal, and each transmission burst is effected in accordance with the transmission timing signal. When the sync signal ceases to be detected, the transmission timing signal is autonomously generated for a certain time period after the sync signal is last detected. In another aspect of the invention, during reception in a first channel, the channel quality of another vacant channel is measured by transferring PLL data to a PLL prior to the slot in which the measurement is effected. In a further aspect of the invention, bit stream data transmitted from the base station is converted into byte stream data and used for control within the wireless telephone.