JPH05211467A - Incoming call control system - Google Patents

Abstract

PURPOSE:To provide the incoming call method not requiring a pager terminal equipment by a simple portable telephone set. CONSTITUTION:In order to allow a portable telephone set terminal 11 resident in a service area of a radio base station 2 to receive a call, a specific number is sent (x1) to the portable telephone set terminal 11 from a telephone set 7 through a paging transmission station 9, the paging transmission station 9 sends the number to each zone, and when the radio base station 2 receives the number, the station 2 calls the portable telephone set terminal 11 (x3) and when a reply comes from the portable telephone set terminal 11 (x4), the line from the radio base station 2 to the telephone set 7 is connected, This system adopts a method that a number specific to the terminal equipment is sent from the paging portable transmission station 9 to the radio base station 2 once and the station 9 sends the number in a radio wave able to be received by the portable telephone set terminal 11 and it is not required to integrate the portable telephone set terminal 11 with a pager terminal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio base station connected to a general public network, when the service area of each base station is a few hundred meters or less, or a small zone of about 100 m, it is used there. The present invention relates to a method for effectively controlling incoming calls for telephone terminals and the like.

[0002]

2. Description of the Related Art Conventionally, regarding a mobile phone that receives a service under a radio base station in a small zone, as in the case of a car phone system, a radio base station under which the mobile phone exists in advance, or a position registration method, or , A method of calling a pager directly connected to a mobile phone terminal from a paging transmission station has been considered.

[0003]

However, as a method for registering the location, for that purpose, in addition to the PSTN network, a database for storing the location registration information, a dedicated exchange, etc. are required, and a general telephone to a mobile telephone is required. When making a call to a terminal, it is a procedure to refer to the database once, inquire which base station to connect to the line, and then connect the line by a dedicated exchange.For this reason, not only compressing the wired line, The system was complicated and there was the disadvantage that the capital investment was very expensive.

On the other hand, as an inexpensive method, a method of directly calling a pager terminal connected to a mobile phone terminal from a paging transmission station has been considered. In this case, there are two types of terminals, a mobile phone terminal and a pager terminal. It is necessary to combine them, which is not only disadvantageous in terms of the physical size of the terminal, but also the difficulty of owning the terminal which is uneconomical for the user. Further, in this method, since the service areas of the paging radio wave and the radio wave of the radio base station are different, there is a problem in terms of usability.

[0005]

The present invention provides a method for overcoming the significant difficulties set forth above. That is,
A wireless transmission station that covers a large zone transmits a terminal-specific number, and one or more stations among wireless base stations that are connected to a wired line and have a small service area have a terminal-specific number. When receiving the activation signal, the activation signal for receiving an incoming call is transmitted to the terminal having the number unique to the terminal, and the terminal having the number unique to the terminal receives one of the radio base stations when receiving the activation signal. Set up a communication path to a wired line via the station.

[0006]

FIG. 1 shows a first specific embodiment of the present invention.
As an example, wireless base stations 1 to 6 and a telephone 7 are connected to a general public network 8. Of course, tens of thousands to hundreds of thousands of wireless base stations and millions of telephones are actually available.
Although there are tens of millions of systems, a simple example shown in FIG. 1 will be described here for ease of explanation. Further, a paging transmission station 9 is also connected to the public network 8.
It is assumed that the service areas of the respective radio base stations 1 to 6 each have a radius of several hundred meters or around 100 meters. Also,
The service area of the paging transmitting station 9 has a radius R ₉ of several km to several tens of km, and the wireless base stations 1 to 5 exist therein.

In the case of making an incoming call from the telephone set 7 to the mobile telephone terminal 10, the following is performed in the first embodiment.

First, the telephone number of the telephone 7 and the number unique to the mobile telephone terminal 10 are transmitted from the telephone 7 to the paging transmitting station 9
Send to (x ₁ ) and send within a large zone of radius R ₆ (x
₂ ). These numbers are received together with the base station selection signal by the radio base stations 1 to 5 existing in the service area of the paging transmitter station 9 (x ₂ ), but these radio base stations 1 to 5
Further, the wireless base stations 1 to 3 selected by the base station selection signal among 5 transmit the telephone number of the telephone 7 and the terminal-specific number by radio waves that can be directly received by the mobile telephone terminal (x ₃ ).

FIG. 1 shows a case where the intended mobile phone terminal 10 is present in the service area of the radio base station 2. Here, when the mobile phone terminal 10 is called, a response signal is sent to the radio base station 2. At the same time as returning (x ₄ ), reverse connection is made from the radio base station 2 to the telephone set 7 (x ₅ ) and the speech path is set. In this case, which radio base station calls the mobile phone terminal is selected by the base station selection signal, but as shown in the example, it may be limited to 1 to 3 radio base stations, or the paging transmitting station There may be all radio base stations present in the 9 zones.

When the mobile phone terminal is called by using all the radio base stations, it is impossible to predict where the mobile phone terminal is. In this case, it is not always necessary to select which radio base station to start up as the base station selection signal. In addition, when a base station selection signal is sent to call a mobile phone terminal from some limited wireless base stations, it is possible to predict to some extent where the mobile phone terminal exists. In this case, there is an advantage that the base station unrelated to the calling of the terminal does not emit unnecessary radio waves.

In FIG. 1, for example, there is a method in which expected position information is stored in the memory 10 and this information is included in the base station selection signal. When this method is used, the location information may be accepted and registered by the subscriber in units of municipalities, or may be registered in units of prefectures. In the service area of the paging transmitting station, the request of the subscriber is met.

FIG. 2 shows a second embodiment of the present invention. The difference from the case of FIG. 1 is only that a connecting device 12 is added. In this case, when the number unique to the terminal is transmitted to the paging transmitting station 9 so that the telephone 7 calls the mobile telephone terminal 10, the line is held by the connecting device 12 (y ₁ ). In the following, the paging transmission station 9 sends a unique number to the mobile phone terminal 11 together with a base station selection signal to each radio base station (y ₂ ), and the mobile phone is sent from each radio base station selected by the base station selection signal. It is the same as the case of FIG. 1 until the mobile phone terminal 11 calls the terminal (y ₃ ) and the mobile phone terminal 11 returns a response signal to the wireless base station 2 (y ₄ ), but thereafter, the wireless base station 2 becomes the connection device 12. For the line connection (y ₅ ), the line from the telephone 7 (y
₁ ) and the line (y ₅ ) that has passed from the mobile phone terminal 11 through the wireless base station 2 are connected, and a call becomes possible. In this case, the telephone set 7 waits off hook when making an incoming call to the mobile telephone terminal 11.

[0013]

As described above, the present invention has the following effects.

(1) Since a general public network can be used, there is no need to have a dedicated network, the system configuration is simple, and the facility investment cost is low.

(2) Compared with a method of calling a pager connected to a mobile phone terminal by using a paging system, it is not necessary to own a pager other than the mobile phone terminal, and downsizing and economy of the terminal can be achieved. . Moreover, since the incoming call is made to the mobile phone terminal from the range where the radio wave of the radio base station can reach, there is no usability problem for the user due to the mismatch between the paging system service area and the radio base station service area.

[Brief description of drawings]

FIG. 1 is a block diagram showing a specific embodiment of the present invention.

FIG. 2 is a block diagram showing a specific embodiment of the present invention.

[Explanation of symbols]

 1 to 6 wireless base station 7 telephone 8 public network 9 paging transmitter 10 memory 11 mobile phone terminal 12 connection device

Claims (1)

[Claims] 1. A wireless base station that transmits a terminal-specific number from a wireless transmission station that covers a large zone, is connected to a wired line, and is one of wireless base stations with a small service area, or
When the plurality of stations receive the terminal-unique number, they send an activation signal for receiving a call to the terminal having the terminal-unique number, and the terminal having the terminal-unique number transmits the activation signal. Is received, a communication path is set to the wired line via any one of the wireless base stations.