JPH05211679A - Incoming control system - Google Patents

Abstract

PURPOSE:To attain call to a portable telephone in precincts or underground market, etc., which was considered impossible even by using a paging system in order to facilitate the call to the portable telephone. CONSTITUTION:In regard of the incoming, the proper number of a portable telephone terminal is sent to a paging transmitter station 12 from a telephone set 10. The station 12 receives the number of the terminal with a receiver 6. Then the incoming is started via a private branch exchange 5 which the radio waves that can be received by the portable telephone terminal from the radio base stations 1-3. Thus the incoming start can be applied to a simple portable telephone even in such blind sectors of a conventional paging system such as the inside of a building, an underground market, etc. Furthermore a system requiring no registration of positions can be directly applied in a network with use of a paging system.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Radius of 10 for effective frequency utilization
A mobile phone system in which a plurality of wireless base stations with a small transmission power of about 0 m are used and the same frequency is repeatedly used is under study. In particular, from the needs of diversification of communication, there is a demand for a system that can receive an incoming call and establish a communication system regardless of where the mobile phone terminal is, regardless of whether it is an underground mall, indoors, or outdoors. In these systems, when a mobile phone terminal is outdoors, a paging method is used to easily realize an incoming call function, and a method of calling a pager coupled with the mobile phone terminal is considered.

The present invention makes use of the advantage of using the paging method as it is, while maintaining the advantages of using a paging system for a mobile phone terminal which makes a call through a plurality of radio base stations connected to an exchange in a limited area such as a premises or an underground mall. The present invention relates to a method for effectively controlling incoming calls.

[0003]

2. Description of the Related Art Conventionally, a method of realizing an incoming call function by calling a mobile phone terminal by using a paging system does not need to know the exact location of the mobile phone terminal (without requiring location registration). There is a great merit that the system can be called, and the system in which the mobile phone is used does not require a dedicated exchange, and the system is simple and inexpensive. However, the mobile phone
If you move to a place where radio waves for paging are not received, such as a premises or an underground mall, the terminal cannot be used. Therefore, it is necessary to provide another transmission means so that radio waves for paging can be received even in the premises or underground malls.

[0004]

As one example, there is a method in which a relay amplifier for relaying paging radio waves at a high frequency is provided, and a high frequency received outdoors is amplified and transmitted to an LCX or the like and retransmitted to a building or an underground mall. Although considered, it is not only economically expensive to draw the LCX or the like in addition to the wireless base station for the mobile phone, but also the appearance is inferior, which has been a big problem in use.

[0005]

The present invention provides a method for solving the above-mentioned major problems. That is,
In a system in which a plurality of wireless base stations are connected to an exchange that is connected to a general public network, and a terminal exists that enables communication by wirelessly communicating with the plurality of wireless base stations, a wireless system that covers a large zone A receiving station that transmits a terminal-specific number from the transmitting station and receives radio waves from the wireless transmitting station is provided, and the terminal-specific number received by the receiving station is transmitted to the exchange, and the plurality of wireless bases are provided. A start signal for receiving a call is sent to a terminal having a number unique to the terminal through all or some of the stations.

[0006]

FIG. 1 shows a first specific embodiment of the present invention.
As an example, wireless base stations 8 to 9 and a telephone 10 are connected to a general public network 11. Of course, actually, even outdoors, tens of thousands to hundreds of thousands of wireless base stations,
Although there are several million to several tens of millions of telephone systems, the example of FIG. 1 will be described here to simplify the description. Furthermore, the paging transmission station 1 is connected to the public network 11.
2 is also connected. The service area of each of the radio base stations 8 to 9 is around 100 m in radius, but the service area of the paging transmitting station 12 has a radius of several km to several tens of km, and the receiving station 6 can receive this radio wave. ..

Next, the inside of the indoor 7 has the following system.

The private branch exchange 5 connected to the general public network 11 takes in the terminal-specific number received by the receiving station 6, judges whether or not the number is stored in the memory 4, and if it is registered, Call from each of the wireless base stations 1 to 3 on the premises. Regarding the registration of the terminal-specific number in the memory 4, when the terminal enters the indoor 7, it may be automatically written through any of the wireless base stations 1 to 3, or the owner of the terminal may Radio waves may be manually emitted from the terminal and written via any radio base station. In the example of FIG. 1, the service area of each wireless base station is about 50 to 100 m, and the target mobile phone terminal 13 exists in the service area of the wireless base station 1.

The mobile telephone terminal can receive the service even at the wireless base stations 8 to 9, but the wireless base stations 1 to 3 in the indoor 7 are available.
But you can get the service. In this system, even if the user does not know where the mobile phone terminal is, if the mobile phone terminal and the pager receiver are integrally combined, an incoming call function is possible.

In order to make an incoming call from the telephone set 10 to the portable telephone terminal 13, the following is performed in the first embodiment. First, the telephone 10 sends the telephone number of the telephone 10 and the number unique to the mobile telephone terminal 13 to the paging transmission station 12 (x ₁ ) and transmits it to the large zone (x ₂ ). If the mobile phone terminal 13 is integrated with the pager receiver outdoors, it will receive waves from the paging base station 12 on the spot, but if it is indoors 7 as shown in FIG. Become.

After the receiver 6 receives the wave from the paging base station 12, the result is sent to the private branch exchange 5 (x
₃ ), the private branch exchange 5 checks whether the terminal-specific number received by the receiver 6 is registered in the memory 4, and if
If registered, the mobile phone terminal can call directly from each of the wireless base stations 1 to 3 by radio waves (x ₅ ). here,
If it is clearly stored in the memory 4 that the wireless base station is in the service area, that wireless base station will call the terminal, and it is unknown whether the wireless base station is in the service area. For example, it will be called from each base station. When the mobile phone terminal 13 returns a response signal (x ₆ ), the result is sent from the wireless base station 1 to the private branch exchange 5.
Back to the phone 10 (x ₇ ) and in the form of a reverse connection to the phone 10 (x
₈ ) The call path is set.

In the embodiment shown in FIG. 1, the telephone 10 calls the portable telephone terminal 13 and then goes on-hook and waits.

FIG. 2 shows a second practical example according to the present invention.
The difference from the case of FIG. 1 is only that a connecting device 14 is added. In this case, from the telephone 10 to the mobile telephone terminal 1
When transmitting the number unique to the terminal to the paging transmitting station 12 so as to call 3, the line is held by the connecting device 14 (y ₁ ). The following is the paging transmitter station 12
The number unique to the terminal is transmitted (y ₂ ), the receiver 6 receives this number, sends it to the private branch exchange 5 (y ₃ ), calls from the wireless base station (y ₅ ), and receives a response from the mobile phone terminal 13. Yes (y ₆ ), the same as in the case of FIG. 1 until the fact is notified to the private branch exchange (y ₇ ), but a line is set from the private branch exchange 5 to the connection device 14 (y ₈ ), and the connection device 14 is connected. Then, the line from the telephone 10 and the line from the mobile phone terminal 13 are connected to each other to enable a call.

In the embodiment shown in FIG. 2, the telephone set 10 calls the portable telephone terminal 13 and then goes off hook and waits.

[0015]

As described above, the present invention provides means for calling a mobile phone terminal without requiring location registration on the network side regardless of whether the mobile phone terminal is indoors or outdoors.
According to the present invention, when the mobile phone terminal receives the service under the radio base station connected to the private branch exchange, it is not necessary to connect and connect the pager for calling to the mobile phone terminal. Of course, when used indoors or underground, there is no need for a relay amplifier or LCX for retransmitting paging radio waves other than a mobile phone radio base station. It will be solved all at once.

[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]

 1-3, 8-9 Radio base station 4 Memory 5 Private branch exchange 6 Receiver 7 Building representing indoors 10 Telephone 11 Public network 12 Paging transmitter station 13 Mobile phone terminal 14 Connection device

Claims (1)

[Claims] 1. A system in which a plurality of wireless base stations are connected to an exchange connected to a general public network, and a terminal exists which enables communication by wirelessly communicating with the plurality of wireless base stations. Transmitting a terminal-owned number from a wireless transmission station covering the zone, providing a receiving station for receiving radio waves from the wireless transmission station, and transmitting the terminal-owned number received by the receiving station to the exchange, An incoming call control method, wherein an activation signal for incoming call is sent to a terminal having a number unique to the terminal, through all or any one of the plurality of radio base stations.