JPH07288857A - Portable telephone system - Google Patents

Abstract

PURPOSE:To allow a public portable telephone terminal to access a public portable telephone network via a private branch exchange by providing the common portable telephone base station having a function of a public portable telephone base station to a private portable telephone base station connecting to the private branch exchange. CONSTITUTION:A private branch exchange 12 is connected to a public portable exchange 11 in a wired network and a public handy phone network with the same interface as that for a public telephone set CS 51 of a public base station. A common portable terminal CS 52 is a base station communicated with a private portable terminal PS 72 and a public PS 71 to accommodate the exchange 12. The access from a public PS 71 in the private area to the PHP network including the public PS 71 is implemented via the common CS 52 and the exchange 21. Furthermore, the access from the public PS 71 to the wired network or the private PS 72 is implemented from the exchange 12 via an exchange 11 of the PHP network. That is, a channel with the public PS 71 in the private area is formed via the private branch exchange 12 and the public portable exchange 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone system, and more particularly to a portable telephone system which allows a portable telephone terminal for public access to a portable telephone network for public through a private branch exchange in a private area.

[0002]

2. Description of the Related Art Conventionally, in a portable telephone system, wireless signals used for public use and for private use are different from each other, and they constitute independent wireless communication areas for public use and private use or home use. As shown in FIG. 4, public mobile phone terminals (public PS: personal status)
n) mainly accesses a public mobile phone base station (public CS: cell station) installed outdoors, and a private mobile phone terminal (private PS) is a private mobile phone base station installed on its own site ( In a self-employed CS), and in a cordless home telephone for home use, a child device accesses a parent device in the home. Then, the user selects a contracting system based on conditions such as purpose, fee, and service area. However, even if a contract was made with a public system that provides a wide service area, it was not possible to make or receive calls within a building where the radio waves of the public CS did not reach. In addition, in order to enable incoming / outgoing calls in a building such as a hotel or department store having a high public nature, as shown in FIG.
Must be installed separately from the self-employed CS, and the public C
Whether or not to install S was up to the will of the building owner.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile telephone system connected to a private branch exchange in a self-employed area such as a building that operates as usual and has its own public mobile telephone base station (public telephone). Without providing CS in the private area, public mobile phone terminals (public P in the private area)
S) is to provide a mobile phone system capable of accessing a public mobile phone network.

[0004]

The portable telephone system of the present invention is the same as the case where a public portable telephone base station is connected to an exchange forming a public portable telephone network provided by a communication carrier. The private branch exchange connected under the interface condition of 1. and the shared mobile phone base station in which the function of the public mobile phone base station is added to the private mobile phone base station connected to the private branch exchange.

The shared mobile phone base station sends and receives radio signals to and from public and private mobile phone terminals, and based on an instruction from the private branch exchange, the type of public or private radio signal to be sent and received. And a means for notifying the private branch exchange of the public or private type of the source mobile phone terminal of the received wireless signal.

The private branch exchange receives a notification of the type of the originating mobile phone terminal for public or private use from the shared mobile phone base station, and when it is public, sends information regarding a location registration request or call origination to the public mobile phone. A method of transferring the authentication information sent from the public mobile phone network to the source mobile phone terminal and the incoming call information from the public mobile phone network via the shared mobile phone base station. It has means for notifying a public mobile phone terminal.

[0007]

[Function] The public mobile phone terminal (public PS) that has entered the self-employed area accesses the public mobile phone network through the shared mobile phone base station (shared CS) and private branch exchange, makes a location registration request, and is authenticated. Information is transmitted to the public PS via the private branch exchange and the shared CS. In the case of calling from the above public PS (even if it is for a private PS in the same private area), the same route as above, that is, the shared CS,
It is transferred to the public mobile phone network through the private branch exchange, and the authentication information is transmitted to the public PS by the reverse route. (Calls to the private PS in the private area are received from the public mobile phone network to the private PS via the wired network, private branch exchange and shared CS.) Arrival from the public mobile phone network to the public PS in the private area Calls can be made from public cell phone exchanges to private branch exchanges,
It is done via the shared CS.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of a mobile phone system of the present invention, and FIGS. 2 and 3 are flow charts showing the processing steps of location registration and incoming call in the system shown in FIG.

The mobile phone system shown in FIG. 1 is a PHP (Personal Ha) which is a wired network and a public mobile phone network.
It consists of a public network including an ndy phone network and a private network in the private area. The PHP network includes a public mobile phone switch 11 and a public subscriber mobility management DB (data).
base) 54 and a public C representing a public mobile phone base station
S (cell station) 51 and a public PS (personal state) representing a public mobile phone terminal.
on) 71 is included.

On the other hand, the private network in the private area is the private branch exchange 12, the private DB for managing subscribers 53, the shared CS (shared mobile phone terminal), and the private PS representing the private mobile phone terminal.
72 and public PS71.

Here, the private branch exchange 12 is connected to the wired network, and is also connected to the public mobile telephone exchange of the PHP network through the same interface as when connecting the public CS to the public mobile telephone exchange. The shared CS 52 is a mobile phone base station that can communicate with both the private PS 72 and the public PS 71, and is housed in the private branch exchange 12.

Access from a public PS 71 in the private area to a PHP network including other public PSs in the private area is performed via the shared CS 52 and the private branch exchange 12. In addition, access from a public PS in the private area to a wired network and a private PS in the same private area is also possible from the private branch exchange 12 to the public mobile telephone exchange 11 of the PHP network.
Via a wired network. That is, all communication paths with the public PS 71 in the self-employed area are formed via the private branch exchange 12 and the public mobile telephone exchange 11.

The processing for location registration and incoming call will be described with reference to FIGS. 1, 2 and 3.

In FIG. 2, a public or private mobile phone terminal (public PS71 or private P
When S72) makes a location registration request (step 1), the shared CS 52 notifies the private branch exchange 12 of the type of public PS 71 or private PS 72 from the received wireless signal (step 2).

Upon receipt of the notification, the private branch exchange 12 follows the well-known call control procedure for private use when the portable telephone terminal that has issued the location registration request is a private employer PS and manages the private subscriber management DB.
(Data base) is searched (step 3), whether or not the position registration is accepted or not is determined (step 4), the result is notified to the self-employed PS, the service start or rejection is confirmed, and the position registration process Finish (Step 5,
6).

However, when the mobile telephone terminal which has issued the location registration request is the public PS 71, the private branch exchange 12 mediates this and transfers the above information regarding the location registration to the public mobile telephone exchange 11 of the PHP network ( Step 7). The public mobile telephone exchange 11 searches the public subscriber movement management DB 54, determines whether or not the authentication is possible (steps 8 and 9), performs the required location registration, and relays the result to the location registration request source through the private branch exchange 12. The public PS 71 is notified, and the location registration process ends (steps 10 and 11).

In FIG. 3, an incoming call request from the PHP network to the public PS 71 existing in the private area first reaches the public mobile telephone exchange 11 (step 20), and the exchange 11 receives an incoming call from the public subscriber mobility management DB 54. The presence of the pre-public PS 71 is searched (step 21), and the private branch exchange 12 in the private area is subjected to the incoming call processing in the same procedure as when an incoming call is made to the public CS 51 (step 22).

The private branch exchange 12 receiving the incoming call from the mobile telephone exchange 11 notifies the shared CS 52 that it is an incoming call from the mobile telephone network (step 23), and the shared CS 52 sends it to the public PS 71 via the public wireless signal. The incoming call is notified (step 24).

In addition, when the private branch exchange is installed on the premises by a telecommunications carrier providing a public mobile telephone network, or when the private branch exchange is extremely small and included in other devices, this It is not beyond the scope of the invention.

[0021]

As described above, according to the present invention, the base station of the mobile phone system for the private area accommodated in the private branch exchange is a shared base station capable of wireless communication with both the public and private mobile phone terminals. By connecting the private branch exchange to the public mobile telephone exchange under the same interface conditions that the public mobile telephone base station is connected to the public mobile telephone exchange, the public mobile telephone terminal in the private premises such as the private branch will operate the private exchange. There is an effect that it is possible to access the public mobile phone network via the.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a mobile phone system of the present invention.

2 is a flow chart of a location registration process in the mobile phone system of FIG.

FIG. 3 is a flowchart of incoming call processing to a public PS.

FIG. 4 is a block diagram showing a configuration example of a conventional mobile phone system.

FIG. 5 is an explanatory block diagram when a public mobile phone base station (public CS) is provided in a self-employed area in a conventional mobile phone system.

[Explanation of symbols]

 11 Public Mobile Phone Exchange 12 Private Branch Exchange 51 Public CS 52 Shared CS 53 Private Employment Subscriber Management DB 54 Public Subscriber Mobility Management DB 71 Public PS 72 Private Employment PS

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location H04Q 7/04 D

Claims (3)

[Claims] 1. A mobile telephone system is connected to an exchange constituting a public mobile telephone network provided by a communication carrier under the same interface conditions as those used when a public mobile telephone base station is connected to the exchange. A mobile telephone system comprising a private branch exchange and a shared mobile telephone base station in which a function of a public mobile telephone base station is added to a private mobile telephone base station connected to the private branch exchange. 2. The shared mobile phone base station sends and receives radio signals to and from public and private mobile phone terminals, and based on instructions from the private branch exchange, public signals of radio signals to be sent or received. The mobile phone system according to claim 1, further comprising means for selecting a private-use type and notifying the private branch exchange of a public-use or private-use type of a mobile phone terminal which is a source of the received wireless signal. 3. The private branch exchange receives from the shared mobile phone base station a notification of the type of the originating mobile phone terminal for public or private use, and when it is public, sends a location registration request or information regarding calling. A means for transferring the authentication information sent from the public mobile phone network to the sender mobile phone terminal and a call incoming information from the public mobile phone network for a shared mobile phone base station. The mobile phone system according to claim 1, further comprising means for notifying the public mobile phone terminal of the call destination via the above.