Patent ID: 7162206

Claim:
A radio terminal apparatus in a CDMA mobile communication system that controls the order of data transmission and data reception on a radio channel, transmits a signaling signal periodically, and, while communication is in progress, transmits signals applying different transmission powers according to the presence or absence of the signaling signal and user information, said radio terminal apparatus comprising: a radio receiver that receives a signal including one or both of user information and a signaling signal; a radio transmitter that transmits a signal including one or both of user information and a signaling signal; an RLC section that is connected to the radio receiver and the radio transmitter and that outputs a signaling signal, generated by the radio terminal apparatus, to the radio transmitter for transmission periodically; a protocol processor that sets a radio interface based on the received signal, provided by the radio receiver via the RLC section, and reports a suspension of transmission of the signaling signal to the RLC section, wherein: while communication is in progress, the radio transmitter transmits a transmission signal in which the signaling signal is inserted in the user information; and while a radio characteristics test is in progress, the RLC section suspends transmitting the signaling signal in response to the report from the protocol processor and the radio transmitter transmits the transmission signal comprising the user information alone at a fixed transmission power.