JPH05252266A - Radio base station for mobile communication system - Google Patents

Abstract

PURPOSE:To prevent waste of resource of a public line network by eliminating an unnecessary area code number from a dial number, to reduce the connection time and to prevent deterioration in voice quality. CONSTITUTION:An elimination number being an area code number of a district in which a radio base station is located and an exemption number being an area code number of a different district from the district in which a radio base station is located through the addition of an additional number to the eliminated number are registered in advance to a registration means 1. An elimination means 2 compares a head of the dial number dialed by a mobile terminal equipment with the elimination number and the exemption number and eliminates the elimination number from the dial number when the head is dissident with the exemption number but coincident with the elimination number and sends the result to a public line network from a line exchange 10.

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 for a mobile communication system, and more particularly to a radio base station for a mobile communication system such as a car telephone.

[0002]

2. Description of the Related Art In a mobile communication system such as an automobile telephone, when calling from a mobile terminal, it is decided to dial the area code including the area code. Therefore, when a mobile terminal exists in the city and a call is made from the mobile terminal to the same city, the area code is added to dial.

When there is a call from a mobile terminal, the conventional base station apparatus sends the dialing as it is to the exchange of the public line to which the base station apparatus is connected.

[0004]

Therefore, conventionally, when a call is made from a mobile terminal to a city where the mobile terminal exists, dialing with a toll number or a toll number is added from a base station device to a public line exchange. It will be sent out.

However, when dialing from an area code to receive an incoming call within the same city, a telephone call is received from the exchange of the public line to which the base station device is connected via the exchange for the long distance call. Will be connected to the exchange,
It is not preferable for effective use of resources because it goes through an extra exchange for long distance calls. Further, there is a problem that the connection time increases and the voice quality is deteriorated.

The present invention has been made in view of the above points,
A wireless base station of a mobile communication system capable of preventing unnecessary use of public line network resources by deleting unnecessary toll numbers from dialing numbers, shortening connection time, and preventing deterioration of voice quality. ..

[0007]

FIG. 1 shows the principle of the present invention.

In the figure, a radio base station is a base station for transmitting / receiving data between a radio device 18 connected to a mobile terminal 20, a line exchange 10 connected to a public line network, a radio device and a line exchange. Device 12.

The registration means 1 has a deletion number which is an area code of the area where the wireless base station is placed and an area which is distinguished from the area where the wireless base station is placed by adding an additional number to the deletion number. And the exception number, which is an out-of-town number, are registered in advance.

The deleting means 2 compares the head portion of the dialing number transmitted by the mobile terminal with the deletion number and the exception number, and dials when the head portion does not match the exception number and also matches the deletion number. Delete the number from the number and send it from the circuit switch to the public line network.

[0011]

In the present invention, when making a call from the mobile terminal 20 to the city where the radio station connected thereto is located, the radio base station deletes the area code from the dialing number from the mobile station 20. Since it is transmitted to the public line network, the call is received without passing through an unnecessary exchange in the public line network, and it is possible to prevent an increase in connection time and deterioration of voice quality.

[0012]

2 is a block diagram of an embodiment of a radio base station of the present invention.

In the figure, a line switch 10 is connected to a public line switch (not shown) through a terminal 11 and is also connected to an input / output interface (I / O) 13 of a base station apparatus 12.

The base station device 12 includes a CPU 14 and an I / O1.
In this configuration, the buses 3 and 15 and the memory 16 are connected by a bus 17. In the memory 16, a deletion number, an exception number, etc., which will be described later, are registered in advance in addition to the program operated by the CPU 14. The CPU 14 uses the contents of the memory to control dialing by the origination of the mobile terminal. I / O15
Is connected to the radio device 18 and the radio device 1
8 and the mobile terminal 20 are wirelessly communicated with each other.

FIG. 3 shows a flowchart of a dialing control process executed by the base station device 12. This process is started when the wireless device 18 receives a call from the mobile terminal 20.

In FIG. 3, first, at step 30, the dialing number is fetched, and at step 31, it is judged whether or not the prefix (the head portion) of this dialing number matches the exception number registered in the memory 16. ..

If the prefix of the dialing number does not match the exception number, the process proceeds to step 32, where it is determined whether or not the prefix of the dialing number matches the deletion number registered in the memory 16. If the prefix of the dial tongue number matches the deleted number, the deleted number is deleted from the dialing number in step 33, and the remaining dialing numbers are I / O 13 and the circuit switch 1.
Send from 0 to the public line.

If the prefix of the dialing number matches the exception number in step 31 or does not match the deletion number in step 31, the dialing number itself is set in step 34 by the I / O 13 and the line switch 10 to the public. Send to the line.

Here, when the radio base station is placed in Obihiro, the area code of the telephone in Obihiro is "0155" and the area code of Hiroo near Obihiro is "01558". In this case, "0155" is the deletion number and "01558"
Is registered as an exception number in the memory 16.

In this case, the dialing number for the incoming call from the mobile terminal 20 to Hiroo outside Obihiro City is' 01558213.
If you send 4 ', this pre-fex will be the exception number' 0.
Dialing number '015 to match 1558'
5821234 'is sent from the circuit switch 10 to the public line as it is. Also, when the dialing number '0155521234' that is received in Obihiro city is transmitted from the mobile terminal 20, this pre-fix is an exception number '01558'.
Since it does not match the deletion number '0155', the remaining dialing number '271234' from which the deletion number has been deleted from the dialing number is sent from the circuit switch 10 to the public line.

That is, there is a mobile terminal 20 in Obihiro city,
When making a call from here to Obihiro City via a wireless base station in Obihiro City, the area code of Obihiro City is deleted from the dialing number dialed by the mobile terminal. It is possible to receive an incoming call without passing through an extra switch, wasteful use of resources, short connection time, and deterioration of voice quality are prevented.

The deletion number and the exception number may be registered in the memory 16 of the base station device 12 of the radio base station to perform dialing control, and the mobile terminal 20 should be aware of adding the toll number as usual. There is no need and no increase in circuitry.

[0023]

As described above, according to the radio base station of the mobile communication system of the present invention, it is possible to prevent unnecessary use of the resources of the public line network by deleting the unnecessary long-distance number from the dialing number. However, the connection time can be shortened, and the deterioration of voice quality can be prevented, which is extremely useful in practice.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a block diagram of an embodiment of a wireless base station of the present invention.

FIG. 3 is a flowchart of a dialing control process.

[Explanation of symbols]

 1 Registration Means 2 Deletion Means 10 Circuit Switch 12 Base Station Device 14 CPU 16 Memory 18 Radio Equipment 20 Mobile Terminal

Claims (1)

[Claims] 1. A radio device (18) connected to a mobile terminal (20) and a circuit switch (10) connected to a public line network.
In a radio base station of a mobile communication system having a base station device (12) for transferring data between a radio device and a circuit switch, a deletion number, which is an area code of the area where the radio base station is placed, , A registration means (1) in which an additional number is added to the above-mentioned deletion number and an exception number which is an area code of an area distinguished from the area where the wireless base station is placed, and a dialing code transmitted by the mobile terminal. The beginning part of the ring number is compared with the above-mentioned deletion number and exception number, and when the above-mentioned beginning part does not match the exception number and also coincides with the deletion number, the deletion number is deleted from the dialing number and the line exchange is switched to the public line network. And a deleting means (2) for transmitting the data to the wireless base station of the mobile communication system.