Mobile terminal control program and mobile terminal equipment

A mobile terminal control program for controlling mobile terminal equipment comprising a call-via-wireless-LAN means having a function to call through a wireless LAN and a call-via-wireless-telephone-network means having a function to call through a wireless telephone network, the mobile terminal control program causing a computer to serve as:

• a wireless-LAN service area determination means for obtaining wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means when a telephone number is input to originate a call, and for determining whether the equipment is in the service area of the wireless LAN, depending on whether the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means for obtaining remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment is in the service area of the wireless LAN, and for selecting a communication channel through the wireless LAN as an originating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level, and for selecting a communication channel through the wireless telephone network as an originating communication channel if the remaining battery level information indicates that the remaining battery level is lower than the certain level;
• and
• an origination control means for giving an origination instruction to the call-via-wireless-telephone-network means if the communication channel selection means selects a communication channel through the wireless telephone network, and giving an origination instruction to the call-via-wireless-LAN means if a communication channel through the wireless LAN is selected.

Mobile terminal equipment for calling by radio, the mobile terminal equipment comprising:

• a call-via-wireless-LAN means having a function to call through a wireless LAN;
• a call-via-wireless-telephone-network means having a function to call through a wireless telephone network;
• a wireless-LAN service area determination means for obtaining wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means, and for determining that the equipment has entered the service area of the wireless LAN if the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means for obtaining remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment has entered the service area of the wireless LAN, and for selecting a communication channel through the wireless LAN as a terminating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level;
• and
• a routing setup request means for giving a unit for managing a channel routing setup a routing setup request for routing an incoming call directed at a telephone number for communication through the wireless telephone network to a communication channel through the wireless LAN if the communication channel selection means selects the communication channel through the wireless LAN.

Mobile terminal equipment for calling by radio, the mobile terminal equipment comprising:

• a call-via-wireless-LAN means having a function to call through a wireless LAN;
• a call-via-wireless-telephone-network means having a function to call through a wireless telephone network;
• a wireless-LAN service area determination means for obtaining wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means when a telephone number is input to originate a call, and for determining whether the equipment is in the service area of the wireless LAN, depending on whether the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means for obtaining remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment is in the service area of the wireless LAN, and for selecting a communication channel through the wireless LAN as an originating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level, and for selecting a communication channel through the wireless telephone network as an originating communication channel if the remaining battery level information indicates that the remaining battery level is lower than the certain level;
• and
• an origination control means for giving an origination instruction to the call-via-wireless-telephone-network means if the communication channel selection means selects a communication channel through the wireless telephone network, and for giving an origination instruction to the call-via-wireless-LAN means if a communication channel through the wireless LAN is selected.

A mobile terminal control method for controlling mobile terminal equipment comprising a call-via-wireless-LAN means having a function to call through a wireless LAN and a call-via-wireless-telephone-network means having a function to call through a wireless telephone network, by means of a computer, the mobile terminal control method wherein

• a wireless-LAN service area determination means obtains wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means, and determines that the equipment has entered the service area of the wireless LAN if the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means obtains remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment has entered the service area of the wireless LAN, and selects a communication channel through the wireless LAN as a terminating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level;
• and
• a routing setup request means gives a unit for managing a channel routing setup a routing setup request for routing an incoming call directed at a telephone number for communication through the wireless telephone network to a communication channel through the wireless LAN if the communication channel selection means selects the communication channel through the wireless LAN.

A mobile terminal control method for controlling mobile terminal equipment comprising a call-via-wireless-LAN means having a function to call through a wireless LAN and a call-via-wireless-telephone-network means having a function to call through a wireless telephone network, by means of a computer, the mobile terminal control method wherein

• a wireless-LAN service area determination means obtains wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means when a telephone number is input to originate a call, and determines whether the equipment is in the service area of the wireless LAN, depending on whether the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means obtains remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment is in the service area of the wireless LAN, and selects a communication channel through the wireless LAN as an originating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level, and selects a communication channel through the wireless telephone network as an originating communication channel if the remaining battery level information indicates that the remaining battery level is lower than the certain level;
• and
• an origination control means gives an origination instruction to the call-via-wireless-telephone-network means if the communication channel selection means selects a communication channel through the wireless telephone network, and gives an origination instruction to the call-via-wireless-LAN means if a communication channel through the wireless LAN is selected.

A computer-readable recording medium having recorded a mobile terminal control program for controlling mobile terminal equipment comprising a call-via-wireless-LAN means having a function to call through a wireless LAN and a call-via-wireless-telephone-network means having a function to call through a wireless telephone network, the mobile terminal control program causing a computer to serve as:

• a wireless-LAN service area determination means for obtaining wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means, and for determining that the equipment has entered the service area of the wireless LAN if the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means for obtaining remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment has entered the service area of the wireless LAN, and for selecting a communication channel through the wireless LAN as a terminating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level;
• and
• a routing setup request means for giving a unit for managing a channel routing setup a routing setup request for routing an incoming call directed at a telephone number for communication through the wireless telephone network to a communication channel through the wireless LAN if the communication channel selection means selects the communication channel through the wireless LAN.

A computer-readable recording medium having recorded a mobile terminal control program for controlling mobile terminal equipment comprising a call-via-wireless-LAN means having a function to call through a wireless LAN and a call-via-wireless-telephone-network means having a function to call through a wireless telephone network, the mobile terminal control program causing a computer to serve as:

• a wireless-LAN service area determination means for obtaining wireless-LAN radio strength information indicating the strength of radio waves sent by an access point of the wireless LAN from the call-via-wireless-LAN means when a telephone number is input to originate a call, and for determining whether the equipment is in the service area of the wireless LAN, depending on whether the wireless-LAN radio strength information indicates that the radio strength is higher than or equal to a certain level;
• a communication channel selection means for obtaining remaining battery level information indicating the remaining battery level from a battery management circuit for managing the battery if the wireless-LAN service area determination means determines that the equipment is in the service area of the wireless LAN, and for selecting a communication channel through the wireless LAN as an originating communication channel if the remaining battery level information indicates that the remaining battery level is higher than or equal to a certain level, and for selecting a communication channel through the wireless telephone network as an originating communication channel if the remaining battery level information indicates that the remaining battery level is lower than the certain level;
• and
• an origination control means for giving an origination instruction to the call-via-wireless-telephone-network means if the communication channel selection means selects a communication channel through the wireless telephone network, and for giving an origination instruction to the call-via-wireless-LAN means if a communication channel through the wireless LAN is selected.