| 摘要 |
PROBLEM TO BE SOLVED: To continue speech by operating handover in the other system when handover fails in one system in a mobile communication composite terminal and a in-speech handover switching method for receiving a service in two different mobile communication systems. SOLUTION: This mobile communication composite terminal is provided with two radio controlling part 15 and 20 for separately establishing, connecting, and releasing a radio channel in each of two different mode communication systems, an operation controlling part 30 for setting the validity/invalidity of the automatic switching of a communication mode at the time of waiting or in speech, and a communication mode switching controlling means 31 for operating the switching of a communication mode by allowing one of the two radio controlling parts to stop the transmission of radio waves and allowing the other radio controlling part to operate handover according to the set contents of the operation controlling part when the quality of speech through one of the two radio controlling parts is deteriorated, and the handover based on this fails.
|
