Personal communication system for personal stations operating in a moving object

• US 5,659,882 A
• Filed: 10/06/1994
• Issued: 08/19/1997
• Est. Priority Date: 03/13/1992
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Fukutomi, Reijiro
• Primary Examiner(s): Eisenzopf, Reinhard J.
• Assistant Examiner(s): BANKS HAROLD, MARSHA DENISE
• Application Number:
  US08/321,835
• Time in Patent Office: 1,048 Days
• Field of Search: 455/12.1, 455/33.1, 455/33.4, 455/54.1, 455/54.2, 455/56.1, 379/59, 379/58
• US Class Current: 455/524
• CPC Class Codes: H04B 1/38 Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 84/00 Network topologies

Abstract

A mobile radio communication method and a mobile radio communication system arranged in which as to a personal station (PS) located in a moving object equipped with a personal base station (CS), a position is registered with respect only to CS within the moving object. In this communication system, a connector is provided which connects a personal station (PS) possessed by a rider of the moving object to CS within the moving object. The personal station (PS) connected to the connector issues a position register demand through the connector to CS within the moving object. Subsequently, this personal station periodically issues the position register demand only to CS within the moving object in the form of electromagnetic waves until the level of the electromagnetic waves transmitted from CS within the moving object becomes lower than a predetermined value. The personal base station (CS) accepts only the position register demand issued from PS connected to the connector. The personal base station (CS) within the moving object releases the position registration of the relevant PS when the transmission of the position register demand from the personal station whose position has been registered, is interrupted.

Claims

1. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile personal base station installed on a moving object, for relaying the call issued from the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface (R

     1);

a base station for relaying the call relayed by the mobile station to the mobile communication switching device;

a position register center for supervising positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a supervising content of said position register center, wherein;

said personal station is connectable with any of said fixed personal base station and said mobile personal base station via a radio interface (R

     2); and

said mobile personal base station includes means for identifying the personal station present on the moving object where said mobile personal base station is installed; and

means for registering a position about only the personal station which is identified such that said personal station is present on the moving object, into said position register center in correspondence with said mobile personal base station.

2. A personal communication system as claimed in claim 1 wherein:

said mobile personal base station includes means for announcing such a message that said mobile personal base station is present on the moving object, to the personal station which is identified by such that said mobile personal base station is present on the moving object; and

said personal station includes means for registering the position of the personal station itself into said position register center via only such a mobile personal base station which has received the announcement such that said personal station is present on the moving object.

3. A personal communication system as claimed in claim 1 wherein:

said identifying means of the mobile personal base station corresponds to a personal station connecting connector installed on the moving object, and means for identifying whether or not the personal station is present on said moving object where said personal station is installed when a position register demand is received via said connector;

said registering means of said mobile personal base station corresponds to means for registering the position of the personal station which has issued the position register demand into said position register center in response to the position register demand received via said connector; and

said mobile personal station includes a terminal connectable to said connector;

means for issuing the position register demand from said terminal when said issuing means is connected to at least said connector; and

means for not issuing the position register demand to the fixed personal base station and other mobile personal base stations after said position register demand has been issued from said terminal, and until a strength of received electromagnetic waves as to the mobile personal base station to which said position register demand issued from said terminal is destined.

4. A personal communication system as claimed in claim 1 wherein:

said plurality of personal stations involve a plurality of portable telephone sets.

5. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station, fixed on the ground, for relaying a call issued from a personal station to a mobile communication switching device;

a mobile personal base station, installed on a moving object, for relaying the call issued from the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface R 1;

a base station for relaying the call relayed by the mobile station to the mobile communication switching device;

a position register center for managing positions of respective personal stations; and

a mobile communication switching device for switching calls among the personal stations in accordance with a management content of said position register center,

wherein each personal station, is connectable with any one of said fixed personal base station and said mobile personal base station via a radio interface R 2,

wherein said each personal station comprises;

means for identifying whether said each personal station is present on the moving object where said mobile personal base station is installed, and

means for registering a position of said each personal station via only said mobile personal base station into said position register center when identification is made that said each personal station is present on the moving object.

6. A personal communication system as claimed in claim 5 wherein:

said means for registering the position of said personal station corresponds to means for issuing to a mobile personal base station, such a position register demand containing information indicating that said personal station is present on the moving object when it is identified that said personal station is present on the moving object; and

said mobile personal base station includes means for registering the position into said position register center in correspondence with said personal station in response only to the position register demand containing the information indicating that said mobile personal base station is present in the moving object, which is issued from the personal station.

7. A personal communication system as claimed in claim 5 wherein:

said means for identifying whether or not said personal station itself is represent on the moving object where said mobile personal base station of said personal station is installed, corresponds to a switch manipulated by a user in accordance with the using place of the personal station, and means for identifying conditions of said switch.

8. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile personal base station installed on a moving object, for relaying the call issued from the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface R 1;

a base station for relaying the call relayed by the mobile station to the mobile communication switching device;

a position register center for managing positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a management content of said position register center, wherein;

said personal station is connectable with any of said fixed personal base station and said mobile personal base station via a radio interface R 2, and includes;

means for identifying said personal station itself is present on the moving object where said mobile personal base station is installed; and

means for registering the position of said personal station itself via only a mobile personal base station into said position register center when identification is made that said personal station is present on the moving object; and

said mobile personal base station includes means for identifying the personal station present on the moving object where said mobile personal base station is installed; and

means for registering a position about only the personal station which is identified such that said personal station is present on the moving object, into said position register center in correspondence with said mobile personal base station.

9. A mobile station utilized in a moving object communication system, comprising:

means for simultaneously accessing at least two channels among a plurality of time divisional channels provided on a radio communication path between base stations.

10. A personal station capable of utilizing both of a communication path through a communication satellite, and other communication paths by way of a radio interface, comprising:

means for utilizing other communication paths with a priority, rather than the communication path via the communication satellite in case that any of the communication paths via the communication satellite is utilizable.

11. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile station installed on a moving object, and connectable with the personal station, for relaying a call of the connected personal station between a base station and itself via a radio interface R 1;

a base station for relaying either a call of the mobile station, or the call of the personal station relayed by the mobile station between the mobile communication switching device and itself;

a position register center for managing positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a management content of said position register center, wherein;

said personal station is connectable with said fixed personal base station via a radio interface R 2;

said mobile station registers the call of the personal station relayed by said mobile personal base station by combining an identification number of said personal station with an identification of said mobile station; and

said mobile communication switching device exchanges the call to the personal station having a specific identification number as a call to the mobile station having the identification number which has been registered into said position register center in combination with the identification number of said personal station.

12. In a personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile personal base station installed on a moving object, for relaying the call issued from the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface R 1;

a base station for relaying the call relayed by the mobile station to the mobile communication switching device;

a position register center for managing positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a management content of said position register center, in which;

said personal station is connectable with any of said fixed personal base station and said mobile personal base station via a radio interface R 2,

a personal communication method comprising the steps of;

identifying a personal station present on the moving object where said mobile personal base station is installed; and

registering a position about only the personal station which is identified such that said personal station is present on the moving object, into said position register center in correspondence with said mobile personal base station.

13. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile personal base station installed on a moving object, for relaying the call issued from the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface;

a base station for relaying the call relayed by the mobile station to the mobile communication switching device;

a position register center for supervising positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a supervising content of said position register center;

wherein said personal station is connectable with any of the said fixed personal base station and said mobile personal base station via a radio interface;

wherein said mobile personal base station includes;

means for identifying the personal station present on the moving object where said mobile personal base station is installed,

means for registering a position about only the personal station which is identified into said position register center in correspondence with said mobile personal base station, and

means for simultaneously accessing at least two channels among a plurality of time divisional channels provided on a radio communication path between base stations.

14. A personal communication system comprising:

a plurality of personal stations;

a fixed personal base station fixed on the ground, for relaying a call issued from the personal station to a mobile communication switching device;

a mobile personal base station installed on a moving object, for relaying the call issued form the personal station to a mobile station;

a mobile station for relaying the call relayed by the mobile personal base station to a base station via a radio interface;

a base station to the mobile communication switching device;

a position register center for supervising positions of said respective personal stations; and

a mobile communication switching device for switching the calls among the respective personal stations in accordance with a supervising content of said position register center;

wherein said personal station is connectable with any of said fixed personal base station and said mobile personal base station via a radio interface;

wherein said mobile personal base station includes;

means for identifying the personal station present on the moving object where said mobile personal base station is installed, and

means for registering a position about only the personal station which is identified into said position register center in correspondence with said mobile personal base station; and

wherein at least one of said personal stations comprises;

means for utilizing other communication paths with a priority, rather than a communication path via a communication satellite when communication paths via the communication satellite is utilizable.