Radio communication system and a portable wireless terminal

• US 5,128,981 A
• Filed: 05/21/1990
• Issued: 07/07/1992
• Est. Priority Date: 05/24/1989
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Tsukamoto, Nobuo, Takikawa, Kumiko, Kuwahara, Hiroshi, Sakamoto, Yuji
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): CUMMING, WILLIAM D
• Application Number:
  US07/526,246
• Time in Patent Office: 778 Days
• Field of Search: 370/62, 370/108, 370/110.1, 379/56, 379/57, 379/58, 379/59, 379/60, 379/61, 379/62, 379/63, 379/112, 455/33
• US Class Current: 455/450
• CPC Class Codes: H04M 1/6505 storing speech in digital form
• CPC Class Codes: H04M 1/663 Preventing unauthorised calls to a telephone set
• CPC Class Codes: H04M 1/72451 according to schedules, e.g. using calendar applications
• CPC Class Codes: H04M 1/733 with a plurality of base stations connected to a plurality of lines for selection in cordless PBX H04W84/16
• CPC Class Codes: H04M 11/022 Paging systems personal calling arrangements or devices G08B3/1008; selective calling networks H04W84/022
• CPC Class Codes: H04M 19/045 Call privacy arrangements, e.g. timely inhibiting the ring signal
• CPC Class Codes: H04M 3/533 Voice mail systems
• CPC Class Codes: H04W 84/16 WPBX [Wireless Private Branch Exchange]

Abstract

This invention proposes a radio communication system including a plurality of radio terminals, a relay apparatus (including a plurality of base stations and an exchange station) connected to each radio terminal so that the radio terminals can interchange information from each other, and a data processing unit connected to the relay apparatus, each radio terminal having a circuit for inputting and outputting a voice signal and a circuit for inputting and outputting data whereby it can communicate with another radio terminals or with the data processing unit through the relay apparatus. The radio terminal of this invention further has a clock, and a circuit for storing a schedule inputted by the user thereby to automatically select a receiving mode such as a ringing mode or a nonringing mode in accordance with the contents of the schedule, the present time and so on.

Claims

1. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receive for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said portable radio telephone includes means for adding a flag to data inputted by said data input means, a first memory means for storing said flag-added data as first data, a second memory for temporarily storing data to be transmitted to said base station as second data, said terminal processor, during a predetermined period, reads said first data added with said flag from said first memory, stores it as said second data in said second memory, and eliminates the flag from said first data within said first memory after transmitted said second data to said base station.

2. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said central data processing unit causes said central memory to store said second data received through said relay means from said portable radio telephone, said central processor copies said second data and sends said copied data back through said relay means to said portable radio telephone, said terminal processor of said portable radio telephone compares said copied data and the second data of said second memory and transmits the result of said comparison to said central data processing unit through said relay means, said central data processing unit eliminates said second data from said central memory if the result of the comparison reaches disagreement.

3. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receive for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said portable radio telephone when said result of the comparison reaches disagreement, eliminates said second data or again transmits said second data to said central data processing unit through said relay means.

4. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said portable radio telephone has a memory for storing data inputted by said data input means, said terminal processor causes the transmission of information including said data and the address of the information in said memory through said relay means to said central data processing unit, and said central data processing unit causes said central memory to store the data included in said information as first data, said central processor, during a predetermined time, causes the data stored in the memory of said portable radio to be retransmitted to said central processor through said relay means and stored as second data, said central processor compares said first data and said second data and updates said first data in said central memory in accordance with the result of the comparison.

5. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said portable radio telephone has a clock for producing the present time, a memory for storing the data inputted from said data input means, said terminal processor transmits information including said data, the address at which said data is stored in the memory and a time at which said data is produced through said relay means to said central data processing unit, said central processor of said central data processing unit causes said central memory to store the data included in said information as first data in association with said address and said data production time, said central processor, during a predetermined time, causes the data stored in the memory of said portable radio and a second production time to be retransmitted to said central processor through said relay means and to be stored as second data, said central processor compares the production time of said first data with that of said second data, and permits said central memory to store data with the newer production time.

6. A radio communication system comprising a plurality of portable radio telephones for making voice and data communication between the radio telephones within a service area formed by a plurality of radio zones, comprising:

a relay means for making a communication channel between the radio telephones, said relay means including a plurality of base stations placed in respective radio zones and an exchange station connected to each of said base stations, each of said base stations having a radio communication means for interchanging signals with the radio telephones contained within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from a one of said radio telephones wherein the calling request includes an ID number of an other radio telephone of the plurality of radio telephones, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the other radio telephone having the ID number contained in said calling request when the other radio telephone is within a radio zone of said second base station and thereby establishes a communication channel on which a communication signal received from said exchange station is transmitted to the other radio telephone, said exchange station having a table memory for storing information concerning a relation between the communication channel to each base station and ID numbers of each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said central data processing unit being connected to said base stations through said exchange station when said exchange station receives data from an arbitrary one of said base stations;

wherein each of said radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the radio telephone and said base station when said radio telephone is within the radio zone of the base station, a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal to and from said base station, and inputting data in said data communication mode by the user, data output means for displaying data signals while in said data communication mode to the user, an inner memory for storing a program, and a terminal processor which executes said program so that data inputted by said data input means is supplied in a format to said radio communication circuit and data from said radio communication circuit is supplied in a preselected format to the data output means, said portable radio telephone has a memory for storing the relation between an ID number of each base station and a location information, and sets said schedule information according to time data and location data, said terminal processor controls said ringing means to generate an alarm tone different from said ringing tone when the location information in said memory associated with said base station included in a control signal transmitted from the base station during each predetermined period is different from the location data included in said schedule information.

7. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central data processor for processing said data, said exchange station causing said base stations and said central processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, wherein said portable radio telephone includes means for adding a flag to data inputted by said data input means, a first memory means for storing said flag-added data as first data, a second memory for temporarily storing data to be transmitted to said base station as second data, said terminal processor, during each predetermined period, reads said first data added with said flag from said first memory, stores it as said second data in said second memory, and eliminates the flag from said first data within said first memory after transmitting said second data to said base station.

8. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said central data processing unit causes said central memory to store said second data received through said relay means from said portable radio telephone, said central processor copies said second data and sends said copied data back through said relay means to said portable radio telephone, said terminal processor of said portable radio compares said copied data and the second data of said second memory and transmits the result of said comparison to said central data processing unit through said relay means, and said central processing unit eliminates said second data from said central memory if the result of the comparison reaches disagreement.

9. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, wherein said portable radio telephone, when said result of said comparison reaches disagreement, eliminates said second data or again transmits said second data to said control data processing unit through said relay means.

10. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephone, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said central processor of said central data processing unit processes the data stored in said central memory in accordance with a request signal received through said relay means from said portable radio telephone in said data communication mode, and transmits through said relay means the result of said processing to the portable radio telephone specified by said request signal.

11. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said portable radio telephone has a memory for storing data inputted by said data input means, said terminal processor causes the transmission of information including said data and the address of the information in said memory through said relay means to said central data processing unit, and said central data processing unit causes said central memory to store the data included in said information as first data, said central processor, during a predetermined time, causes the data stored in the memory of said portable radio telephone to be retransmitted to said central processor through said relay means and stored as second data, said central processor compares said first data with said second data and updates said first date in said central memory in accordance with the result of the comparison.

12. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said portable radio telephone has a memory for storing data inputted by said data input means, said terminal processor causes the transmission of information including said data and the address of the information in said memory through said relay means to said central data processing unit, and said central data processing unit causes said central memory to store the data included in said information as first data in association with said address, said central processor, during a predetermined time, causes the data stored in the memory of said portable radio telephone to be retransmitted to said central processor through said relay means and stored as second data, said central processor compares said first data and said second data and updates said first data in said central memory in accordance with the result of the comparison.

13. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said portable radio telephone has a clock for producing the present time, and a memory for storing the data inputted from said data input means, said terminal processor transmits information including said data, the address at which said data is stored in the memory and a time at which said data is produced through said relay means to said central data processing unit, said central processor of said central data processing unit causes said central memory to store the data included in said information as first data in including said data production time, said central processor, during a predetermined time, causes the data stored in the memory of said portable radio telephone and a second production time to be retransmitted to said central processor through said relay means and to be stored as second data, said central processor compares the production time of said first data with that of said second data and permits said central memory to store data with the most recent production time.

14. A portable radio telephone for a radio communication system for making voice communication or data communication between the portable radio telephone and an other portable radio telephone within a service area formed by a plurality of radio zones, said radio communication system comprising:

relay means for making a communication channel between the portable radio telephones, said relay means including a plurality of base stations placed in a respective one of said radio zones and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from said portable radio telephone, said calling request including an ID number of the other portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the other portable radio telephone having the ID number contained in said calling request when the portable radio telephone having the ID number is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the other portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of an each portable radio telephone terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary base station; and

a central data processing unit for processing data received from said exchange station, said central data processing unit being connected to said exchange station and having a central memory for storing data received from said exchange station and a central processor for processing said data, said exchange station causing said base stations and said central data processing unit to be connected through said exchange station when said exchange station receives a calling request from an arbitrary base station;

said portable radio telephone comprising a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station;

a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal;

a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit;

data input means for selecting a voice communication mode for transmitting and receiving the voice signal to and from said base station or a data communication mode for transmitting and receiving the data signal, to and from said base station, and inputting data in said data communication mode by the user;

data output means for displaying data signals while in said data communication mode by the user;

an inner memory for storing a program; and

a terminal processor which executes said program and which formats data signals exchanged between the input means and the radio communication circuit, said portable radio telephone has a memory for storing the relation between an ID number of each base station and a location information and sets said schedule information according to time data and location data, said terminal processor controls said ringing means to generate an alarm tone different from said ringing tone when the location information in said memory associated with the address of said base station included in a control signal transmitted from the base station during each predetermined period is different from the location data included in said schedule information.

15. A communication system for making voice communication or data communication between first and second portable radio telephones within a service area formed by a plurality of radio zones, comprising:

a plurality of base stations respectively placed in said radio zones; and

an exchange station connected to each of said base stations;

each of said base stations having radio communication means for interchanging signals with the portable radio telephones within the respective radio zone of said base station, said radio communication means having means for receiving a calling request from the first of said portable radio telephones, said calling request having an ID number of the second portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for receiving and transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and means for interchanging radio signals with the second portable radio telephone when the second portable radio telephone is within the respective radio zone of said second base station, and thereby establishing a communication channel on which a communication signal received from the first portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the second portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the communication channel to each base station and ID numbers of each portable radio telephone, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations;

wherein each of said portable radio telephones includes a radio communication circuit for transmitting and receiving voice and data signals between the portable radio telephone and said base station when said portable radio telephone is within the respective radio zone of the base station, a receiver for transforming the voice signal from said radio communication circuit into an audible voice signal, a transmitter for transforming an audible voice signal from a user into a voice signal and transmitting said voice signal to said radio communication circuit, data input means for inputting data, a schedule memory for storing schedule information inputted from said data input means, timer means for generating a present time and date, ringing means for generating a ringing tone for notifying a user of having received an incoming call signal from said base station, a terminal processor for controlling said ringing means in accordance with said schedule information and the present time and date generated from said timer means when having received an incoming call signal from the base station within the same radio zone, said portable radio telephone has a memory for storing the relation between an ID number of each base station and location information, said schedule information being set so that time data and location data have a correlation, said terminal processor controls said ringing means to generate an alarm sound different from said ringing tone when the location information of said memory, which information contains a correlation with the ID number of said base station, included in a control signal transmitted from the base station during each predetermined period is different from the location data included in said schedule information.

16. A radio communication system for making voice communication between first and second portable radio telephones within a service area formed by a plurality of radio zones,

said radio communication system including a plurality of base stations respectively placed in said radio zones, and an exchange station connected to each of said base stations, each of said base stations having radio communication means for interchanging signals with the portable radio telephones when the radio telephones are within the respective radio zone of the base station, said radio communication means having means for receiving a calling request from the first portable radio telephone, said calling request including an ID number of the second portable radio telephone, said radio communication means having further means for transmitting said calling request to said exchange station, said exchange station having means for transmitting said calling request to a second base station, said second base station having means for receiving said calling request from said exchange station and having radio communication means to interchange radio signals with the second radio telephone when the second portable radio telephone is within the respective radio zone of said second base station, and thereby sets a free communication channel on which a communication signal received from the portable radio telephone is transmitted to said exchange station and on which a communication signal received from said exchange station is transmitted to the second portable radio telephone, said exchange station having a table memory for storing information concerning the relation between the channel to each base station and the ID number of each portable radio terminal, thereby making connection of communication channels between the base stations in accordance with the calling request from an arbitrary one of said base stations, each said portable radio telephone comprising:

a radio communication circuit for transmitting and receiving a voice signal on a radio wave from and to the base station when the portable radio telephone is within the respective radio zone of the base station;

a receiver for emanating sound of the voice signal from said radio communication circuit;

a transmitter for converting voice from the user into the voice signal which is transmitted to said radio communication circuit;

data input means for inputting data;

a schedule memory for storing schedule information inputted through said data input means;

timer means for generating the present time and date;

ringing means for generating a ringing tone by which the user is notified of having received an incoming call signal from the base station; and

a terminal processor for controlling said ringing means in accordance with said schedule information and the present time and date generated from said timer means when having received the incoming call signal from the base station which is located in the radio zone in which said portable radio telephone is located, said portable radio telephone has a memory for recording the relation between the ID number of each base station and location information, and sets said schedule information so that at least the time data and the location data re associated with each other, and said terminal processor controls said ringing means to generate alarm sound different from said ringing tone when the location information of said memory which is associated with the ID number of said base station and included in the control signal transmitted from the base station during each certain period is different from the location data included in said schedule information.