| 摘要 |
PURPOSE:To shorten a hit produced in a channel switching mode by using 2 receiving system to form a mobile station receiving device and switching call channel after confirming that synchronization is secured with a new call channels in case the talking is continued with switch to the new call channel. CONSTITUTION:In case a mobile station switches the present call channel to a new call channel to continue the talking, a base station transmits the number of a new call channel (b) via the present call channel (a). At the same time, the transmission is started via the channel (b) even at the new base station at the moving destination. Then the mobile station knows the channel number (b) of the switching destination from the channel (a) and therefore switches a synthesizer 25 to a frequency equivalent to the channel (b) to receive the radio waves of the channel (b) through a receiving part 23. A transmitting part 21 confirms that the synthesizer 25 is accurately switched to the new channel (b) and then sends a confirmation signal to the base station set at the moving destination via the old channel (a). At the same time, switches 6 and 27 are switched toward the synthesizer 25 and the part 23 respectively. |
