Radio communication apparatus having speed judging circuitry

A radio telephone apparatus comprising:

• first communication mode executing means for performing radio telephone communication between a mobile station and another station through one of a plurality of base stations having at least one radio communication area;
• second communication mode executing means for directly performing radio communication between mobile stations;
• mode selecting means for selecting either the first or the second communication mode by switching therebetween;
• incoming call operation performing means for performing an incoming call operation to detect incoming call notification from a base station;
• response operation performing means for performing a response operation to respond to the incoming call notification;
• monitoring means for monitoring which of the base stations in a call-waiting state can perform radio communication with the radio telephone apparatus, wherein the base stations in the call-waiting state with which the radio telephone apparatus can perform communication switch as the location of the radio telephone apparatus changes;
• and
• judging means for judging whether the radio telephone apparatus is moving at high speed or not on the basis of the rate of switching of base stations in the call-waiting state with which the radio telephone apparatus can perform communication,
• wherein the mode selecting means selects the second communication mode when the radio telephone apparatus is moving at high speed as judged by the judging means based on judging of the base station switching rate prior to the incoming call notification.

A mobile radio communication apparatus comprising:

• radio circuitry for communicating with base stations;
• speed judging circuitry for judging whether the mobile radio communication apparatus is moving at high speed based on the rate of switching of base stations in a call-waiting state with which the mobile radio communication apparatus can perform communication;
• and
• response control circuitry for controlling incoming call response operations of the mobile radio communication apparatus for an incoming call in accordance with whether the mobile radio communication apparatus is moving at high speed as judged by the speed judging circuitry based on judging of the base station switching rate prior to the incoming call.

A mobile radio communication apparatus comprising:

• radio circuitry for communicating with base stations;
• speed judging circuitry for judging whether the mobile radio communication apparatus is moving at high speed based on the rate of switching of base stations in a call-waiting state with which the mobile radio communication apparatus can perform communication;
• and
• an automatic response circuit for performing an automatic incoming call response operation in which an automatic response is provided to a calling party if the mobile radio communication apparatus for an incoming call is moving at high speed as judged by the speed judging circuitry based on judging of the base station switching rate prior to the incoming call.

A mobile radio communication apparatus comprising:

• radio circuitry for communicating with base stations;
• speed judging circuitry for judging whether the mobile radio communication apparatus is moving at high speed based on the rate of switching of base stations in a call-waiting state with which the mobile radio communication apparatus can perform communication;
• and
• a communication mode selection circuit for selecting between a first communication mode and a second communication mode in accordance with whether the mobile radio communication apparatus for an incoming call is moving at high speed as judged by the speed judging circuitry based on judging of the base station switching rate prior to the incoming call.

A mobile radio communication apparatus comprising:

• radio circuitry for communicating with base stations;
• speed judging circuitry for judging in a call-waiting state whether the mobile radio communication apparatus is moving at high speed;
• and
• response control circuitry for controlling incoming call response operations of the mobile radio communication apparatus for an incoming call in accordance with whether the mobile radio communication apparatus is moving at high speed as judged by the speed judging circuitry based on judging of the base station switching rate prior to the incoming call.