JP3012180B2 - Mobile communication base station equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station apparatus for mobile communication, and more particularly to a base station apparatus which can be used for a plurality of purposes.

[0002]

2. Description of the Related Art In recent years, PHSs (simplified cellular phones) and PDs have been developed.
2. Description of the Related Art In mobile communication systems such as C (Digital Cellular Phones), as the number of subscribers increases, the use of a limited frequency band has been promoted to reduce the size of cells. As a result, it is necessary to install many base station devices.

[0003] In a conventional mobile communication system, a base station includes:
It is configured to provide a service to a specific mobile station. As shown in FIG. 8, it is installed in a home and used for a PSTN (Public Telephone Network) 5 and I for mobile stations in the home.
A home base station 82 for providing a connection service to an SDN (Integrated Service Digital Network) 4 and a business base station 83 installed in a business and serving mobile stations in the business
And a public base station 81 that can be used only by mobile stations registered in advance in the public subscriber management center. The business-use base station 83 is connected to the private branch exchange 3 via an ISDN or PS.
Connect to TN.

[0004] Each base station determines a mobile station to be served by an identifier assigned to the mobile station, and refuses service to a mobile station that is not a target.

[0005] As described above, since the mobile station for which each base station is in charge of the service is specified, it is necessary to install a large number of public base stations 81 in order to enhance the public service. Conventionally, the public base station 81 is installed using the roof of a public telephone booth or the like.

[0006]

However, with the progress of cell miniaturization, the number of public base stations is still insufficient. In addition, as the microfabrication of the cell under development becomes full-fledged in various places, the required number of public base stations becomes very large.

On the other hand, it is extremely difficult to secure a place for installing a public base station, and even if a place can be secured, a huge investment is required for the place. For this reason, the establishment of a new public base station will not be maintained, and this will be a major factor hindering the expansion of mobile communication systems.

The present invention solves such a problem. In order to solve the shortage of public base stations, a mobile base station or a business base station can be used as a public base station. It is intended to provide a communication base station device.

[0009]

Therefore, according to the present invention, in a mobile communication base station apparatus for connecting to a mobile station via a wireless communication channel and exchanging a wireless communication channel and a wired line, a plurality of mobile stations requesting communication are provided. A user determining means for determining which system of the mobile communication system the mobile station is, and a radio communication channel to be assigned to each system is set in advance; based on, it assigns a radio communication channel, the mobile
All wireless communication channels assigned to the system to which the station belongs
Assign to other systems when blocked
The set radio communication channels provided a radio communication channel selecting means to assign, and configured to provide a service to the mobile station of the plurality of systems.

[0010] One of the plurality of mobile communication systems is a mobile communication system for public service, and the other is a home mobile communication system for mobile stations in the home.

[0011] One of the plurality of mobile communication systems is a mobile communication system for public service, and the other is a mobile communication system for business which serves mobile stations in the business.

[0012]

Further, when a communication request is issued from a mobile station of another system, a mobile station transfer means for transferring a mobile station to which a wireless communication channel of another system has been allocated to an adjacent mobile communication base station is provided. Provided.

Further, when a call is made by a mobile station of the mobile communication system for public service, there is provided a mobile station information notifying means for notifying the charging center of the identifier of the mobile station and the call duration.

[0015] Further, there is provided a notifying means for notifying information about the system providing the service to the peripheral mobile station.

An authentication means is provided for a mobile station which has requested communication.

If the exchanged wired line is an ISDN or P
STN.

[0018]

In this manner, a base station that can be shared by a plurality of systems, such as a home mobile communication system and a public service mobile communication system, or an office mobile communication system and a public service mobile communication system, is configured. In addition to presetting the radio communication channel to be allocated to each system and, according to the situation, allocating unused channels in the other system in a fluid manner, while avoiding a significant decrease in service to one system, Is being used effectively.

When a radio channel of another system is allocated, when a communication request is issued from a mobile station of that system, the channel is regained by moving the talking mobile station to an adjacent base station, and a communication request is made. Assign to mobile station.

Further, billing, reporting of information, authentication and the like can be performed in the same manner as the dedicated base station of the system.

[0021]

【Example】

(First Embodiment) A mobile communication base station apparatus according to a first embodiment is such that a home base station can be used as a public base station. As shown in FIG. 2, this apparatus (home / public shared base station) 1 is installed in a home similarly to a conventional home base station, but unlike a conventional dedicated base station,
A connection service to the ISDN 4 and the PSTN 5 is provided to the home mobile station and the public mobile station. Therefore, a user having a public mobile station traveling on the road in front of the house where this base station is installed can be transmitted through this base station through the ISDN4.
And PSTN5.

In addition, while the range of the mobile stations to which the service is provided is extended, the service for the original home mobile station is not reduced by the start of the service to the public mobile station. FIG. 2 shows an office / public shared base station 2 in which the office base station can be used as a public base station. The configuration of the base station 2 will be described below. The configuration is essentially the same as that of the public base station 1.

As shown in FIG. 1, the home / public shared base station 1 includes a wired unit 24 connected to the ISDN 4 through an ISDN basic interface 30 including a D channel 31, a B1 channel 32 and a B2 channel 33, and Wireless unit 23 for wireless connection with a home mobile station 26 or a public mobile station 27
And a wired / wireless exchange for exchanging a wireless communication channel connected to the wireless unit 23 and an ISDN communication channel connected to the wired unit 24.
Wireless switching section 25 and control section for controlling the operation of each of these sections
The control unit 21 is a mobile station 2 that has issued a communication request.
The system includes a user determination unit 211 for determining the status of the device 6 or 27, and a RAM 212 for storing information used for the determination process.

The operation of the base station 1 will be described with reference to the flowcharts of FIGS. The mobile stations 26 and 27 first perform location registration for the base station 1.

Step 1: The mobile stations 26 and 27 send a message requesting location registration using the control channel to the base station 1.
Step 2: the control unit 21 that has received the data via the wireless unit 23
Analyzes the message, Step 3: Identifies the mobile station included in the message,
The RAM 21 stores a usage identifier indicating the type of the user (whether it is a public user or an installer of the base station 1 (that is, a person in the home)).
Store in 2.

In this way, the RAM 212 has the contents shown in FIG.
Is stored, and the location of the mobile station is registered. The mobile station for which the location registration has been completed is in a standby state.

When there is a call request from the mobile stations 26 and 27, FIG.
0, step 10: the user determining means 211 determines the type of the user from the mobile device identifier included in the request message by using the mobile device usage identification table stored in the RAM 212. 11: The control unit 21 selects a wireless channel according to the type of the user. The RAM 212 previously stores a wireless channel use management table to be used for this selection. In this table, as shown in FIG. 11B, the relationship between available radio frequencies and slots is defined for each type of user.

Step 12: The selected radio channel is notified to the requesting mobile station 26 or 27.

Step 13: According to the type of the user, the IS
Select the B1 channel or B2 channel of the DN. Step 14: Wired connection with the ISDN using the selected channel. Step 15: Connect with the assigned wireless channel with the mobile station.

In this way, the mobile stations 26 and 27 can establish a connection with a wired line and execute a call.

As described above, the home / public base station of the first embodiment is shared by the installer and the public user.
Since the wireless channel for the installer is secured separately from the wireless channel available to the public user, there is no possibility that the service to the installer will be reduced.

(Second Embodiment) The mobile communication base station apparatus of the second embodiment can divert the line for the public when the line for the installer is not used.

This apparatus, as shown in FIG. 3, includes a public line allocating means 213 for allocating a radio channel to a mobile station requesting a call while observing the availability of the radio channel. ., RAM 212 stores a wireless channel usage management table shown in FIG. 11C, which describes whether the wireless channel is free or blocked. Other configurations are the same as those of the first embodiment.

When there is a call request from a public mobile station, the public line allocating means 213 of this apparatus performs step 11: selecting a radio channel, as shown in FIG. Referring to the management table (FIG. 11 (c)), it is checked whether or not there is a free communication channel (public line) allocated to the public. Check whether there is free space on the service line. If there is no free space in the installer line, the communication request is rejected. If the installer's wireless channel is available, Step 12:
Assign the installer's wireless channel.

As described above, in the apparatus of the second embodiment, when the installer's mobile station is absent or not communicating, the installer's line is permitted to be used for the public and the wireless channel is effectively used.

(Third Embodiment) The mobile communication base station apparatus according to the third embodiment receives a call request from the installer mobile station when the public mobile station uses the installer line. Then, the communication of the public mobile station is transferred to the adjacent mobile communication base station, and the line for the installer is secured for the installer mobile station.

As shown in FIG. 4, this apparatus includes a mobile station transfer means 214 for controlling the transfer of the public mobile station. Other configurations are the same as those of the second embodiment.

The operation of this device will be described with reference to the flowchart of FIG.

Step 20: It is assumed that the public mobile station 1 is in a call using the installer line of the base station 1 by the operation of the second embodiment.

Step 21: When there is a call request from the installer mobile station, Step 22: The public line allocating means 213 of the base station 1 selects a radio channel. Step 221: The radio channel use management table of the RAM 212 To see if there is room in the installer channel. If there is no vacancy, step 23: the mobile station transfer means 214 inquires of another nearby base station 2 via the radio unit 23 whether there is vacancy in the public channel.

Step 30: Base station 2 receiving this inquiry
Then, Step 31: Look at the wireless channel use management table and check the availability of a public channel. Step 32: If there is a availability, notify the base station 1 of the public channel.

Step 24: The mobile station transition means 214 of the base station 1 which is notified of the vacant public channel from the base station 2 is used. Step 25: The mobile station 1 transmits the public channel to the public channel. Step 26: Command the base station 2 to switch to the wired line reserved for the public mobile station 1.

Step 33: The base station 2 establishes the instructed wired line.

Step 27: The control unit of the base station 1 transmits the wireless channel recovered from the public mobile station 1 to the installer mobile station 26.
Step 28: Select the B1 channel of the ISDN for the installer, Step 29: Connect to the ISDN by wire, and connect to the mobile station 2 by the assigned wireless channel.

Thus, the communication channel is established, and the installer mobile station 2 can execute the communication.

As described above, in the mobile communication base station apparatus of the third embodiment, when a call request is issued from the installer while the installer's line is used for the public, the installer's line is used. The continuation of the call that was being made is transferred to another base station in the vicinity, and the call is made to be made, and the recovered installer line is allocated to the installer. Therefore, the installer mobile station can make a necessary call without any trouble, and the public mobile station can continue the call.

(Fourth Embodiment) In a fourth embodiment, a configuration for charging a public user who makes a call using this mobile communication base station apparatus according to the call time will be described.

In order to perform this billing, as shown in FIG.
Mobile station information notifying means 215 for notifying the charging center of the identifier of the public mobile station and the call time at the end of communication is provided.

As shown in FIG. 14, when a call is started, the mobile station information notifying means 215 activates the time counting means 216 to measure the communication time, and step 41: the line is disconnected. Step 42: Stop measuring the communication time. Step 43: Notify the charging center of the mobile station identifier and the call time as charging information.

By having such means, it is possible to charge a public user who uses the home / public base station apparatus.

Fifth Embodiment In a fifth embodiment, a configuration for notifying neighboring mobile stations that the mobile communication base station apparatus is publicly available will be described.

In order to perform this notification, as shown in FIG. 6, the apparatus is provided with a public availability notifying means 217 for notifying availability information.

The public availability notifying means 217 is provided in FIG.
As shown in (2), when the apparatus is in the idle state, information is transmitted through the radio unit 23 to inform that the apparatus can be used for both home use and public use.

By having this means, mobile stations around the house where the mobile communication base station apparatus is installed recognize that this base station performs public services, and perform location registration with respect to this base station. Is performed and the user is in the service area to enjoy the service.

(Sixth Embodiment) In a sixth embodiment, a configuration for performing authentication for preventing unauthorized use of a public mobile station using this mobile communication base station apparatus will be described.

In order to perform this authentication, as shown in FIG. 7, this apparatus is provided with a public use mobile station authentication means 218 for inquiring of a public subscriber management center whether a mobile station requesting communication is registered.

The public use mobile station authentication means 218 is provided in FIG.
As shown in FIG. 6, Step 60: When location registration is requested from the mobile station, Step 61: When it is determined that the mobile station is a public mobile station, a random number for authenticating the mobile station is provided. Handover, step 62: request an authentication key of the mobile station from the public subscriber management center. Step 63: When the mobile station responds with the result of multiplying its own authentication key by a random number, Step 64: multiply the authentication key obtained from the public subscriber management center by the random number Step 65: move the multiplication result Compare with the one sent from the station.

Step 67: If they match, register the location of the mobile station. Step 68: If they do not match, reject the location registration.

By having this authentication means, unauthorized use of the mobile station can be prevented.

In each of the embodiments, the base station apparatus
Although an example of connection with the basic interface of the DN line is shown, this may be a primary group interface. Further, the PSTN to be connected may of course be the PSTN.

Further, the configuration of each embodiment may be selected according to the purpose.
You can combine them.

[0062]

As is apparent from the above description of the embodiment, the mobile communication base station apparatus of the present invention is also used as a public base station, so that this base station apparatus is installed in a general home or business. By doing so, it is possible to easily increase the number of public base stations. This is far more economically advantageous than the case where a public base station is newly established.

Further, even if the range of services for the public is expanded, the service for installers does not deteriorate.

When a large number of dedicated base stations coexist, the use efficiency of the radio channel deteriorates. However, the mobile communication base station apparatus of the present invention can use the radio channel efficiently.

Further, billing and authentication for the mobile station can be performed in the same manner as the dedicated base station.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a mobile communication base station device according to a first embodiment;

FIG. 2 is a configuration diagram of a mobile communication system using the mobile communication base station device of the present invention;

FIG. 3 is a block diagram illustrating a configuration of a mobile communication base station device according to a second embodiment;

FIG. 4 is a block diagram illustrating a configuration of a mobile communication base station device according to a third embodiment;

FIG. 5 is a block diagram illustrating a configuration of a mobile communication base station device according to a fourth embodiment;

FIG. 6 is a block diagram illustrating a configuration of a mobile communication base station device according to a fifth embodiment;

FIG. 7 is a block diagram illustrating a configuration of a mobile communication base station device according to a sixth embodiment;

FIG. 8 is a configuration diagram of a conventional mobile communication system;

FIG. 9 is a flowchart showing a location registration procedure of the mobile communication base station apparatus of the first embodiment;

FIG. 10 is a flowchart showing a channel establishment procedure of the mobile communication base station apparatus according to the first embodiment;

FIG. 11 is a diagram showing a table used in the mobile communication base station device of the first embodiment;

FIG. 12 is a flowchart showing a radio channel selection procedure of the mobile communication base station apparatus according to the second embodiment;

FIG. 13 is a flowchart showing a base station transfer procedure of the mobile communication base station apparatus according to the third embodiment;

FIG. 14 is a flowchart showing a charging information notification procedure of the mobile communication base station apparatus of the fourth embodiment;

FIG. 15 is a flowchart showing a procedure for reporting the available information of the mobile communication base station apparatus according to the fifth embodiment;

FIG. 16 is a flowchart showing an authentication procedure of the mobile communication base station device of the sixth embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 home / public base station 2 office / public base station 3 private branch exchange 4 ISDN 5 PSTN (public telephone network) 21 control unit 211 user determination unit 212 RAM 213 public line allocation unit 214 mobile station migration unit 215 mobile Station information notification means 216 Clocking means 217 Public use available notification means 218 Public use mobile station authentication means 23 Radio unit 24 Wired unit 25 Wired / wireless exchange unit 26 Home mobile station 27 Public mobile station 30 ISDN basic interface 31 D channel 32 B1 channel 33 B2 channel 81 Public base station 82 Residential base station 83 Business base station

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04B 7/26 H04Q ⁷ /00-7/38

Claims (9)

(57) [Claims] 1. A mobile communication base station apparatus for connecting to a mobile station via a wireless communication channel and exchanging the wireless communication channel with a wired line, wherein the mobile station which has requested the communication is assigned to any User determining means for determining whether the mobile station is a mobile station; and a wireless communication channel to be assigned to each system is set in advance, and the mobile station that has requested the communication, Assign a channel ,
A radio communication channel assigned to the system to which the mobile station belongs;
Assigned to another system when all
A wireless communication channel set to so that the wireless communication channel selection means to assign, the mobile communication base station apparatus and providing a service to the mobile station of each system. 2. The mobile communication system according to claim 1, wherein one of the plurality of mobile communication systems is a mobile communication system for a public service, and the other is a home mobile communication system for a mobile station in a home. Item 2. The mobile communication base station device according to item 1. 3. The mobile communication system for public service, wherein one of the plurality of mobile communication systems is a mobile communication system for public service, and the other is a mobile communication system for business which serves mobile stations in the business. Item 2. The mobile communication base station device according to item 1. 4. A communication request from a mobile station of said another system.
When the wireless communication channel of the other system is
Transfer the assigned mobile station to an adjacent mobile communication base station
Claims characterized by comprising mobile station transfer means for causing
2. The mobile communication base station device according to 1. 5. The mobile communication system for public service according to claim 1 ,
Identification of said mobile station when a call is made by the mobile station
Mobile station information to notify the charging center
4. An information notification means.
3. The mobile communication base station device according to claim 1. 6. A system for providing the service.
Provision of notification means for notifying all information to nearby mobile stations
The mobile communication base station device according to claim 1, wherein: 7. An authentication method for the mobile station requesting the communication.
The mobile communication base station apparatus according to claim 1, further comprising a stage . 8. The wired line to be exchanged is a comprehensive service.
Claims being a digital network (ISDN)
Item 8. The mobile communication base station device according to any one of Items 1 to 7 . 9. The system according to claim 1, wherein said exchanged wired line is a public telephone line.
9. A network (PSTN).
3. The mobile communication base station device according to claim 1.