JPH0898240A - Pocket telephone system - Google Patents

Abstract

PURPOSE: To reduce the charge for outdoor radio communication by assigning the same telephone number to plural pocket telephone terminals and setting use priorities to these terminals and setting positions in order from the highest priority. CONSTITUTION: When tour terminal machines 11a to 11d are registered in one home host machine at the time of the outdoor use of the system, one telephone number for public base station is assigned to ID numbers AA to DD of terminal machines 11a to 11d, and their priorities are registered in a PHS exchange 13. When one of terminals 1a to 1d calls public base stations 12a to 12n, the exchange 13 permits line connection to base stations 12a to 12n independently of priorities unless another terminal is speaking to them. When position registration is requested to base stations 12a to 12n from one terminal machine, position registration is permitted unless positions of terminal machines having higher priorities are registered. If a call comes from a general telephone network 14 when terminal machines 11a and 11d request the position registration, the call is terminated by the terminal machine 11a having the higher priority. It is terminated by the exchange 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone system.

[0002]

2. Description of the Related Art Mobile phones have been steadily increasing in popularity due to the liberalization of terminals in April 1994. In addition, the analog NTT system and the improved AMPS system used in the United States and Canada are small zone systems. TACS (Tot
In addition to the al access communication system), services have been started and the digital 800 MHz band and 1.5 GHz band have been activated. In addition, since October 1993, a practical test of a personal handy phone system (PHS) called a simple mobile phone system has been conducted.
The system for home and office has already been approved, and the product has actually been released. Furthermore, the approval of a system that uses public base stations is coming soon.

An authorization number and an ID are given to each of these mobile phone terminals (hereinafter referred to as terminals),
A telephone number is assigned to this ID on a one-to-one basis by contracting with a line carrier. By making this contract, a basic telephone charge is charged for each terminal. Thus, P
HS home and office system terminals can be sent and received with a wired line telephone number indoors (home, office) by contracting with a line operator (can be received and sent as a so-called digital cordless phone handset) Also, when going out, it becomes possible to make and receive a call from a public base station using a telephone number of a wireless line (a telephone number contracted with a line carrier).

Here, at home and office, a plurality of terminals can be connected to one wired line, and when making a call, only the terminal that has made a call operation with the highest priority can make a call. When an incoming call arrives, multiple terminals simultaneously ring the incoming call bell, and any terminal can answer the call. This is exactly the same as a conventional analog cordless phone. On the other hand, with respect to the public base station, since one terminal has one telephone number, it is possible to make and receive calls at all times. However, for incoming calls, the public base station side must recognize that there is a destination terminal device within the range covered by itself, so the terminal device needs to perform location registration with the public base station. . Generally, this location registration is automatically performed by the terminal, so that the user need not be aware of it.

FIG. 3 is an explanatory diagram for using PHS at home, FIG. 4 is an explanatory diagram for using PHS in an office, FIG. 5 is an explanatory diagram for using PHS outdoors, and FIG. 6 is PH.
It is explanatory drawing at the time of making a telephone call directly between S terminal devices.

When the PHS is used at home, as shown in FIG. 3, the indoor base station 1 and a plurality of terminals 2 (2a, 2a) are used.
Make a wireless call between b). The indoor base station 1 connects to a public communication network 3 such as PSTN / ISDN via a connection point 4 with a fixed network.
Be wired to. By the way, PSTN (Public Switche
d Telephone Network) is a general subscriber telephone (so-called NT
T-line) and ISDN (Integrated Service D)
igital Network) is a service integrated digital network,
64kBps INS64 and 1.5MBps INS
1500 have been serviced. That is, the master unit in the digital cordless telephone corresponds to the indoor base station 1, and the plurality of slave units correspond to the plurality of terminals 2a and 2b.

When the PHS is used in an office, as shown in FIG. 4, an indoor base station 1 (1a, 1b, 1c) and a terminal 2 (2) are connected to each other via a private branch exchange (PBX) 5.
Make a wireless call between c, 2d, 2e). Private branch exchange 5
Is connected to a public communication network 3 such as PSTN / ISDN via a connection point 4 with a fixed network. That is, the master unit in the digital cordless telephone corresponds to the indoor base stations 1a, 1b, 1c, respectively, and the plurality of slave units correspond to the plurality of terminals 2c, 2d, 2e, respectively.

When the PHS is used outdoors, two states coexist as shown in FIG. The state is a state in which wireless communication is performed between the outdoor base station 6 (6a, 6b), which is a public base station, and the terminals 2f, 2g. The outdoor base stations 6a and 6b connect to the PST via the connection point 4 with the fixed network.
It is connected to a public communication network 3 such as N / ISDN. In addition, the state is such that the wireless communication is performed between the outdoor base station 6 (6c, 6d) and the terminal 2h, 2i that are connected to the wireless communication device 7b for wireless communication with the wireless communication device 7a by wire. In a state of making a call. The wireless communication equipment 7a is connected to a public communication network 3 such as PSTN / ISDN via a connection point 4 with a fixed network.

When directly talking between PHS terminals,
As shown in FIG. 6, the wireless communication is performed between the terminals 2j and 2k. Here, the indoor base station 1 and the outdoor base station 6 can talk independently. Further, it is possible only between terminals belonging to the same indoor base station 1. Incidentally, each of the above-mentioned terminals 2a to 2k is provided with a certification number and an ID, and a telephone number is contracted and assigned to this ID on a one-to-one basis with the line operator. By making this contract, the basic telephone charge is charged for each of the terminals 2a to 2k.

[0010]

As described above, each terminal is provided with a certification number and an ID, and a telephone number can be assigned to the terminal by contracting with the line operator for each ID. Allotted, which enables wireless communication by taking out the contracted terminal to the outside. On the other hand, since these terminals are convenient to carry and can be used outdoors, the number of terminals used will increase, and one terminal is expected to become widespread in the near future. However, if there are multiple terminals in the home or office (if there are multiple slaves paired with the so-called digital cordless telephone), it is possible to take this terminal outdoors and send / receive to / from the public base station. In order to do so, it is necessary to make a contract with the line carrier for the number of terminals taken out (for example, terminals 2f to 2f shown in FIG. 5).
2i must contract with the line operator to obtain a phone number). Therefore, as the number of terminals that can send and receive to and from the public base station increases, the basic telephone charges will be required for the number of terminals, which causes a problem that the charges for outdoor wireless calls become high. It was

An object of the present invention is to assign the same telephone number to a plurality of mobile telephone terminals, set priority use (call) priority for the terminals, and register the location by the mobile telephone terminal having a higher priority use priority. By doing so, even if the number of terminals increases, the same telephone number is assigned to them, so even if the number of terminals that can receive and make calls with the public base station increases, the outdoor It is an object of the present invention to provide a mobile phone system in which the charge required for a wireless call does not become expensive.

[0012]

In order to solve the above problems, the present invention provides a mobile phone system having the following configuration. Position registration is performed between a wireless call to an indoor base station (home unit) 10 connected to the public communication network 3 and a public base station 12 (12a to 12n) connected to the public communication network 3. As a result, the public base station 12
A mobile phone system A using a plurality of mobile phone terminals 11 (11a to 11d) capable of switching between wireless communication with (12a to 12n) and using the plurality of mobile phone terminals 11 (11a). To 11d), the same telephone number is assigned to the plurality of mobile phone terminals 11 (11a to 11d).
A mobile phone system characterized in that the priority registration is added to each of d), and the location registration is performed using a mobile phone terminal having a higher priority.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mobile phone system according to the present invention will be described below with reference to FIGS. FIG. 1 is a diagram for explaining a wireless call between an indoor base station and a plurality of terminals in the mobile phone system of the present invention, and FIG. 2 is a wireless call between a public base station and a plurality of terminals in the mobile phone system of the present invention. It is a figure explaining.

As will be described later, the mobile telephone system of the present invention generally determines whether or not a line connection with a public base station is permitted for transmission / reception access of a plurality of terminals to a public base station (outdoor base station). With respect to the above judgment, the same telephone number is assigned to a plurality of terminals, and a priority call order for transmission and reception is set for each terminal.

When the mobile phone system of the present invention is used at home, as shown in FIG. 1, for example, the home base unit 10 which is an indoor base station and four terminal units 11 (11a, 11a).
b, 11c, 11d). The home base unit 10 connects to the PSTN / ISD via the connection point 4 with the fixed network.
Wired connection to the public communication network 3 such as N. That is, the master unit in the digital cordless telephone corresponds to the home master unit 10 and the plurality of slave units correspond to the four terminal units 11a to 11d.

When the portable telephone system of the present invention is used outdoors, as shown in FIG. 2, for example, public base stations 12 (12a-12n) which are outdoor base stations and four terminals 11 are used. A wireless call is made between (11a to 11d).
The public base stations 12a to 12n are connected to the public communication network 3 such as PSTN / ISDN via the PHS switching center 13 and the general telephone network 14.

In FIG. 1, it is assumed that four terminals 11a to 11d are registered in the home base unit 10. That is, in this state, the ID numbers of the terminals 11a to 11d are respectively A
If A, BB, CC, and DD are set, this ID number (AA to DD) is registered in the home base unit 10.

I of the four terminals 11a to 11d described above
One public base station telephone number is assigned to each of the D numbers AA to DD. The priority order (priority call order) for the terminals 11a to 11d is registered in the PHS switching center 13. This priority order is, for example, the terminal 11a,
The order is the terminal 11b, the terminal 11c, and the terminal 11d (the terminal 11a has the highest priority). PHS exchange 1
3 corresponds to the public base stations 12a to 12n shown in FIG.
When a call is made from any of the terminals 11a to 11d, the line connection with the public base stations 12a to 12n is permitted as long as the other terminals are not talking, regardless of the priority order of the above terminals. .

On the other hand, for the public base stations 12a-12n,
If there is a location registration request from any one of the terminals 11, the terminal having a lower priority is assigned according to the priority of the terminal described above unless a terminal having a higher priority has already registered the location. You can also register the location on the machine. After this, if a terminal with a higher priority performs location registration, the previous location registration performed with a terminal with a lower priority is re-registered. If you try to register the location while another terminal is talking, the registration will be rejected.
After the call ends, the location of the terminal having a higher priority than the terminal during the call can be registered.

Specifically, when the terminal 11d is in a call, the terminals 11a to 11c cannot make a call or register a location. When this call of the terminal 11d ends, the terminal 11d
Unless there is a location registration request from a to 11c, the terminal 11d
Location registration is accepted. After that, if there is a location registration request from the terminal 11b, the location registration of the terminal 11d is discarded, and the location registration from the terminal 11b is accepted. At this time, when the terminal 11c makes a call, the terminal 11c
The line is connected to c. When the call of the terminal device 11c ends, the location registration of the terminal device 11b is accepted again.

As shown in FIG. 2, when both the location registration of the terminal 11a and the location registration d of the terminal 11d are requested, if there is an incoming call from the general telephone network 14, the terminal having a higher priority is given. The call arrives at 11a. This judgment is made by the PHS exchange 13. At this time, when the terminal device 11a is turned off or the connection is switched to the home master device 10, only the terminal device 11d makes the location registration request.
The terminal 11d will receive the call.

[0022]

As described above, the portable telephone system of the present invention assigns the same telephone number to a plurality of portable telephone terminals, and sets the priority use (call) order to the terminals to give a higher priority use order. Even if the number of terminals increases, the same telephone number is added to these by registering the location using a mobile phone terminal with a high cost, which increases the number of terminals that can receive and make calls with public base stations. Also has the effect that the cost required for outdoor wireless calls does not become high in proportion to the number of units, and the basic telephone charges required for this are saved because no phone numbers are assigned to infrequently used mobile phone terminals. Moreover, since the number of calls made to the same telephone number can be increased, the efficiency of the mobile telephone system can be improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a wireless call between an indoor base station and a plurality of terminals in a mobile phone system of the present invention.

FIG. 2 is a diagram for explaining a wireless call between a public base station and a plurality of terminals in the mobile phone system of the present invention.

FIG. 3 is an explanatory diagram for using PHS at home.

FIG. 4 is an explanatory diagram for using PHS in an office.

FIG. 5 is an explanatory diagram when using PHS outdoors.

FIG. 6 is an explanatory diagram of a case where a telephone call is directly made between PHS terminals.

[Explanation of symbols]

2, 2a to 2k, 11, 11a to 11d Mobile phone terminal 3 Public communication network 10 Home base unit (indoor base station) 12, 12a to 12n Public base station A Mobile phone system

Claims (1)

[Claims] 1. A wireless call between an indoor base station connected to a public communication network and a public base station connected to the public communication network by performing location registration between the public base station and the public base station. A mobile phone system using a plurality of mobile phone terminals capable of switching between wireless calls, wherein the same phone number is assigned to the plurality of mobile phone terminals,
Prioritizing each of the plurality of mobile phone terminals,
A mobile phone system characterized by performing the location registration using a mobile phone terminal having a higher priority of use.