Busy channel switching system

Abstract

Abstract PURPOSE:To enable a base station to measure the reception field intensity or S/N in a fixed cycle by providing a means to a mobile station to give a periodical rise to a transmitter for a fixed period of time in case the mobile station has discontinuous transmissions. CONSTITUTION:A mobile station gives a rise to a transmitter at least for a period T2 and every cycle T1 regardless of the presence or absence of a sound signal. In other words, the mobile station gives immediately the first rise to the transmitter with a talking channel and thereafter performs the rise of transmitter every cycle T1. Therefore it is always possible for a base station to measure the reception field intensity with the same cycle and period as the rise of the transmitter at the mobile station. In other words, the base station designates a talking channel to the mobile station and then waits for and detects the first rise of the transmitter while measuring said reception field intensity. Hereafter the base station performs measurement for a period T2 every cycle T1. Then the base station monitors the reception field intensity through each measurement and switches the talking channel in case said field intensity is less than the threshold value.

Inventors

• 👤 Susumu Kojima
• 👤 晋 小島

Bibliographic Details