JPH11225380A - Premises radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a called destination slave set to receive an incoming call even when the called destination slave set is resident in any master-slave communication system by having only to designate a called destination slave set number by the user in the premises radio communication system where plural master-slave communication systems connect to a private branch exchange. SOLUTION: A mobile management sections that manages in which base station slave sets 102, 302 of a master-slave communication system are resident over between base station cluster devices 10, 30 in the premises radio communication system is provided to the base station cluster devices 10, 30. Furthermore, an address conversion section is provided, which converts a called destination salve set number into a private extension number of the base station cluster devices to which the position of the called destination slave set registers and into a slave set number in the base station cluster. The base station cluster device 10 retrieves a base station cluster device to which the called destination slave set is registered and converts the called destination slave set number into the private extension number of the base station cluster devices to which the position of the called destination slave set registers and into the slave set number in the base station cluster to call the slave set. The user can make a speech even when the called destination slave set in resident in any master- slave communication system master-slave communication system by having only to designate the called destination slave set number without designating the premises extension number of the base station cluster device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private branch exchange system in which a private branch exchange and a plurality of parent-child communication systems are connected, and more particularly, to a private branch exchange for voice communication between slave units spanning between the parent-child communication systems. The present invention relates to a private wireless communication system implemented via a wireless LAN.

[0002]

2. Description of the Related Art In recent years, cordless telephones have become widespread in homes and offices, and expectations for wireless voice communication have increased. Further, with the introduction of the personal handy phone system, digitalization has realized clearer voice quality.

Conventionally, in order to realize wireless voice communication in an office, a method of connecting a base station to a private branch exchange (PBX) or a method of connecting a parent-child communication system (wireless main unit) to an existing private branch exchange. The way was being taken.

[0004]

However, the above-mentioned conventional system has a problem that it is necessary to replace an existing private branch exchange.

In the latter conventional method, a private wireless communication system using an existing private branch exchange can be realized only by purchasing a parent-child communication system. However, since there is no roaming function between systems, a plurality of parent-child communication systems are connected to expand the wireless area, and to realize inter-child communication spanning the parent-child communication systems, a destination base The user must designate and transmit the station cluster device extension number within the station plus the slave unit number within the destination base station cluster. In addition, there is a problem that if the destination slave unit has moved from the designated base station cluster device to another base station cluster device, it is not possible to receive a call.

The present invention has been made in view of the above circumstances, and in a configuration in which a plurality of parent-child communication systems are connected to a private branch exchange, a user simply designates a destination child device number, and It is an object of the present invention to provide a private wireless communication system in which a terminal can receive a call even in any parent-child communication system.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a private wireless communication system is used to determine the current position of a slave unit in a parent-child communication system, which base station is located in the base station. Mobility management means for managing between station cluster devices, a destination extension number of a destination base station cluster device in which a destination location is performing a current location registration, and a destination extension base station Address conversion means for converting to a machine number.

[0008] With this configuration, it is possible to receive a call even if the called child device is in any parent-child communication system, simply by specifying the destination child device number by the user.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION
A plurality of parent-child communication systems comprising a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, connected to each other by control lines; In a private wireless communication system including a private branch exchange connected by a line, a private branch that establishes and disconnects a communication call between the private branch exchange and another base station cluster device in the base station cluster device. Exchange communication means, control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station current position indicating the base station in which the base station is located between the base station cluster apparatus. Mobility management means for managing the extension of the destination base station and the extension number of the destination base station cluster device in which the current location of the destination base station is registered; A private wireless communication system that includes an address conversion means for converting the static Uchiko equipment number, manages whether handset is in which base station, incoming Sakiko equipment number,
This has the effect of converting the extension number of the base station cluster device where the destination slave unit is located and the slave unit number within the cluster.

According to a second aspect of the present invention, there are provided a plurality of base stations, a plurality of base stations, and a plurality of base stations and a plurality of base stations which are connected to each other by a control line. In a private wireless communication system including a private branch exchange connected to a plurality of base station cluster devices and a telephone line, the private branch exchange and another base station cluster device are included in the base station cluster device. A private branch exchange communication means for establishing and disconnecting a communication call between the control equipment, a control line communication means for exchanging management information between the parent-child communication system through the control line, and which base station the slave unit is located in. A mobility management means for managing the current position of the handset over the base station cluster device, and a destination base station cluster in which the current position of the handset is registered. Address conversion means for converting a plurality of local extension telephone numbers of the data transfer device and a destination base station cluster slave unit number, and the address conversion means obtained when the local extension number in the destination base station cluster device is busy. And a recalling means for recalling another local extension telephone number of the destination base station cluster apparatus, wherein the remote control unit manages in which base station the slave unit is located, and The number is converted into a plurality of local extension numbers of the base station cluster device where the destination remote unit is located and the local terminal number in the cluster, and when the local extension number is busy, the call is re-issued to another local extension telephone number. Have.

According to a third aspect of the present invention, there are provided a plurality of base stations, a plurality of base stations, and a plurality of base stations clustered together to control the plurality of base stations. In a private wireless communication system including a private branch exchange connected to a plurality of base station cluster devices and a telephone line, the private branch exchange and another base station cluster device are included in the base station cluster device. A private branch exchange communication means for establishing and disconnecting a communication call between the two, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a slave unit in the parent-child communication system. Mobility management means for managing the current position of a slave unit that indicates whether it is in a base station across the base station cluster devices, the private branch exchange and the base station cluster Communication line management means for managing the use status of a plurality of telephone lines connecting devices, and said communication line management means in a destination base station cluster apparatus in which the current location of the slave unit is registered. This is a local wireless communication system that has an address conversion means for inquiring of free line information to a vacant extension telephone number and a destination base station cluster and converting it to a slave unit number, and manages which base station the slave unit is located in. And manages the usage status of the telephone line, and converts the destination slave unit number into a vacant local extension telephone number and a destination base station cluster slave unit number of the base station cluster device where the destination slave unit is located. Having.

According to a fourth aspect of the present invention, there are provided a plurality of base stations, a plurality of base stations, and a plurality of base stations clustered together to control the plurality of base stations. In a base station cluster device of a private wireless communication system comprising a private communication system and a private branch exchange connected to the plurality of base station cluster devices by a telephone line, the private branch exchange communication means includes the private branch exchange and another base station. A communication call is established and disconnected with the station cluster device, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means is the parent-child communication system. Manages the current position of the slave unit, which indicates which base station the slave unit is located in, between the base station cluster devices, and the address translation means,
This is a local wireless communication method that converts a destination slave unit number into a local extension number of a destination base station cluster device in which the slave unit current position is registered and a slave unit number within the destination base station cluster. In this case, there is an effect that the destination sub-unit number is converted into the local extension number and the intra-cluster sub-unit number of the base station cluster device where the destination sub-unit is located.

According to a fifth aspect of the present invention, there are provided a plurality of base stations, a plurality of base stations, and a plurality of base stations, each of which includes a plurality of base stations. In a base station cluster device of a private wireless communication system comprising a private communication system and a private branch exchange connected to the plurality of base station cluster devices by a telephone line, the private branch exchange communication means includes the private branch exchange and another base station. A communication call is established and disconnected with the station cluster device, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means is the parent-child communication system. Manages the current position of the slave unit, which indicates which base station the slave unit is located in, between the base station cluster devices, and the address translation means,
The destination base station number is converted into a plurality of local extension telephone numbers and a destination base station cluster base station number of the destination base station cluster device in which the current position of the mobile station is registered. A local wireless communication method for making a re-call to another local extension telephone number of the destination base station cluster device obtained from the address conversion means when the local extension number in the station cluster device is busy. It manages which base station it is in, and converts the destination slave unit number to multiple local extension numbers and cluster intra-cluster unit numbers of the base station cluster device where the destination slave unit is located, and separates if the local extension number is busy. Has the effect of calling again to the local extension telephone number.

According to a sixth aspect of the present invention, there are provided a plurality of base stations, a plurality of base stations, and a plurality of base stations clustered together to control the plurality of base stations. In a base station cluster device of a private wireless communication system comprising a private communication system and a private branch exchange connected to the plurality of base station cluster devices by a telephone line, the private branch exchange communication means includes the private branch exchange and another base station. A communication call is established and disconnected with the station cluster device, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means is the parent-child communication system. Manages the current position of the slave unit in which base station the slave unit is located in between the base station cluster devices, and the communication line management means,
The use state of a plurality of telephone lines connecting the private branch exchange and the base station cluster device is managed, and the address translation means stores the destination slave unit number in the destination base station cluster in which the current position of the slave unit is registered. This is a local wireless communication method for inquiring of the free line information to the communication line management means in the device and converting it to a free local extension telephone number and a destination base station cluster slave unit number, in which base station the slave unit is located. Managing the use status of the telephone line, and converting the destination slave unit number into a vacant extension telephone number of the base station cluster device where the destination slave unit is located and a slave unit number within the destination base station cluster. Has an action.

According to a seventh aspect of the present invention, in a private wireless communication base station system used in a private wireless system comprising a private branch exchange and a plurality of parent-child communication systems, the parent-child communication system comprises the private wireless communication. The private wireless communication base station system includes a base station system and a plurality of slave units, and the private wireless communication base station system includes a plurality of base stations and a base station cluster device that bundles the plurality of base stations. The base station cluster device includes the private branch exchange. A private branch exchange that is connected to the telephone line and is connected to each other by a control line, and establishes and disconnects a communication call between the private branch exchange and another base station cluster within the base station cluster. Communication means, control line communication means for exchanging management information between the parent-child communication system through the control line, and the parent-child communication system A mobile management means for managing the current position of the slave unit in the base station indicating which base station is located in the base station cluster device, and a destination base in which the current position of the slave unit is registered. An internal wireless communication base station system comprising: an extension number of a station cluster device; and an address conversion means for converting an extension number of a destination base station into a slave unit number in the destination base station. This has the effect of converting the machine number into the local extension number and the intra-cluster slave number of the base station cluster device where the destination slave unit is located.

According to an eighth aspect of the present invention, in a private wireless communication base station system used in a private wireless system comprising a private branch exchange and a plurality of parent-child communication systems, the parent-child communication system comprises the private wireless communication. The private wireless communication base station system includes a base station system and a plurality of slave units, and the private wireless communication base station system includes a plurality of base stations and a base station cluster device that bundles the plurality of base stations. The base station cluster device includes the private branch exchange. A private branch exchange that is connected to the telephone line and is connected to each other by a control line, and establishes and disconnects a communication call between the private branch exchange and another base station cluster within the base station cluster. Communication means, control line communication means for exchanging management information between the parent-child communication system through the control line, and the parent-child communication system A mobile management means for managing the current position of the slave unit in the base station indicating which base station is located in the base station cluster device, and a destination base in which the current position of the slave unit is registered. Address conversion means for converting a plurality of private extension telephone numbers of the station cluster device and a destination base station cluster slave unit number; and obtaining from the address conversion means when the private extension number in the destination base station cluster device is busy. And a recalling means for recalling another local extension telephone number of the called destination base station cluster device.The local radio communication base station system manages which base station the slave unit is in, and Converts the extension phone number into a plurality of extension numbers of the base station cluster device in which the called extension unit is located and the extension number in the cluster, and if the extension number is busy, another extension line telephone It has an effect of performing recalling the items.

According to a ninth aspect of the present invention, in a private wireless communication base station system used in a private wireless system comprising a private branch exchange and a plurality of parent-child communication systems, the parent-child communication system comprises the private wireless communication. The private wireless communication base station system includes a base station system and a plurality of slave units, and the private wireless communication base station system includes a plurality of base stations and a base station cluster device that bundles the plurality of base stations. The base station cluster device includes the private branch exchange. And a telephone line, and connected to each other by a control line, and establishes and disconnects a communication call between the private branch exchange and another base station cluster device in the base station cluster device. Exchange communication means; control line communication means for exchanging management information between the parent-child communication system through the control line; Mobility management means for managing the current position of a slave unit in a base station, which indicates which base station is located in the base station, between the base station cluster devices, and a plurality of telephones connecting the private branch exchange and the base station cluster device. The communication line management means for managing the line use status and the communication line management means in the destination base station cluster apparatus in which the current position of the child device is registered are queried for the available line information. A local wireless communication base station system including a local extension telephone number and an address conversion means for converting the telephone number into a destination base station cluster slave unit number, which base station the slave unit is located in, and a telephone line usage status. And converts the destination slave unit number into a vacant local extension telephone number and a destination base station cluster slave unit number of the base station cluster device where the destination slave unit is located. A.

The invention according to claim 10 of the present invention comprises a private branch exchange and a plurality of parent-child communication systems. The parent-child communication system comprises a plurality of mobile stations, a plurality of base stations, and the plurality of base stations. And a base station cluster device to be bundled.The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and is connected between the private branch exchange and another base station cluster device. A private branch exchange communication means for establishing and disconnecting a communication call, control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station for the mobile station in the parent-child communication system. Mobile management means for managing the current position of the mobile station, which indicates whether the mobile station is in the station, between the base station cluster devices; A mobile station used in a local area radio system comprising a local extension number of a destination base station cluster device and an address conversion means for converting the local base number into a slave unit number in the destination base station cluster. A mobile station comprising: means for registering a current position in the mobility management means of the station cluster device; and means for receiving a call using a base station cluster slave unit number of the base station cluster device for which the current position has been registered. It has the effect of registering which base station it is in, and arriving with the number converted to the local extension number of the registered base station cluster device and the intra-cluster slave unit number.

The invention according to claim 11 of the present invention comprises a private branch exchange and a plurality of parent-child communication systems. The parent-child communication system comprises a plurality of mobile stations, a plurality of base stations, and the plurality of base stations. And a base station cluster device to be bundled.The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and is connected between the private branch exchange and another base station cluster device. A private branch exchange communication means for establishing and disconnecting a communication call, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station in which the mobile station in the parent-child communication system is located. Mobile management means for managing the current position of the mobile station over the base station cluster apparatus, and the current position of the mobile station registered as the destination slave unit number. Address conversion means for converting a plurality of local extension telephone numbers of a destination base station cluster device and a remote unit number in a destination base station cluster, and said address conversion when the local extension number in the destination base station cluster device is busy Recalling means for recalling another local extension telephone number of the destination base station cluster device obtained from the means, the mobile station being used in a private radio system, the base station cluster via the base station. A mobile station comprising: means for registering a current position in the mobility management means of the apparatus; and means for receiving a call using a base station cluster slave unit number of the base station cluster apparatus in which the current position has been registered. Register whether you are in the station, and receive a call with the number converted to the local extension number of the registered base station cluster device and the intra-cluster slave unit number. In the case of ー, there is an effect of receiving a call with another private extension telephone number.

The invention according to claim 12 of the present invention comprises a private branch exchange and a plurality of parent-child communication systems. The parent-child communication system comprises a plurality of mobile stations, a plurality of base stations, and the plurality of base stations. And a base station cluster device to be bundled.The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and is connected between the private branch exchange and another base station cluster device. A private branch exchange communication means for establishing and disconnecting a communication call, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station in which the mobile station in the parent-child communication system is located. Mobile management means for managing the current location of the mobile station across the base station cluster devices, and the private branch exchange and the base station cluster device. Communication line management means for managing the usage status of a plurality of connected telephone lines; and a destination slave unit number being free in the communication line management means in the destination base station cluster device in which the mobile station current position is registered. A mobile station used in a local area radio system comprising: an internal telephone number which is queried for line information and an address conversion means for converting the telephone number to a vacant extension telephone number and a slave unit number in a destination base station cluster. A mobile station comprising: means for registering a current position in the mobility management means of the cluster device; and means for receiving a call using a base station cluster slave unit number of the base station cluster device for which the current position has been registered. Registered whether you are in the base station, managed the use status of the telephone line, and converted it to the vacant local extension phone number and the cluster slave unit number of the registered base station cluster device. It has the effect of receiving a call by number.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
This will be described in detail with reference to FIGS.

(First Embodiment) In a first embodiment of the present invention, a base station in which a slave unit of a parent-child wireless communication system is located is managed across base station cluster apparatuses, and incoming calls are received. This is a local wireless communication system that converts a destination handset number into a local extension number of a destination base station cluster device and a destination base station cluster handset number registered in the location of the destination handset.

FIG. 1 is a configuration diagram of a private wireless communication system including a private branch exchange and a base station cluster device according to the first embodiment of the present invention. In FIG. 1, a base station cluster device 10 and a base station cluster device 30 are devices that manage a plurality of base stations in a parent-child wireless communication system. The private branch exchange 20 is a device that performs circuit switching between base station cluster devices. The control line 1000 is a communication line such as Ethernet, for example, and the base station cluster devices 10 and 30 are connected to the control line 1000. The private branch exchange 20 and the base station cluster devices 10 and 30 each include a plurality of telephone lines 2001-2010, such as ISDN and analog lines.
Connected in 2011-2020. Base stations 101 and 201 are connected to the base station cluster device 10, and base stations 301 and 401 are connected to the base station cluster device 30 by, for example, a digital interface such as an I interface. In the wireless zone 100 of the base station 101, a slave unit 102 exists. Similarly, a child device 302 exists in the wireless zone 300 of the base station 301. Note that wireless zones 100 and 30
In the case of 0, it is assumed that a digital communication system such as a second generation digital cordless telephone is adopted.

Actually, base station clusters other than the base station cluster devices 10 and 30 are connected to the control line 1000, and each is also connected to the private branch exchange 20 by a telephone line. Further, the base station clusters 10 and 30 include base stations 101, 201, and 30, respectively.
Base stations other than 1 and 401 are connected. Further, slave units other than the slave units 102 and 302 exist in the wireless zones 100 and 300. However, for ease of understanding, illustration is omitted, and the description will be made ignoring the existence of those components unless particularly necessary.

FIG. 2 is a configuration diagram of the base station cluster device 10 according to the first embodiment of the present invention. The base station cluster device 10 includes a base station interface unit 11, a personal handyphone communication control unit 12, a communication path management unit 13, a mobility management unit 14, an interconnection unit 15, and a private branch exchange communication unit 16.
, A control line communication unit 17, an address conversion unit 18, and a telephone line interface unit 19. Base station interface section 11 exchanges control data between base stations 101 and 201 and personal handyphone communication control section 12, and establishes a communication path based on a request from communication path management section 13. The personal handyphone communication control unit 12 inquires of the current position of the destination handset to the mobility management unit 14, and performs communication between handset units in the base station cluster device 10 when in the base station cluster device 10. The communication path management unit 13 is instructed on the communication mode, and establishes, disconnects, and controls the line. If the called slave unit is in another base station cluster device 30 (slave unit 302), the establishment or disconnection of the call is entrusted to the interconnecting unit 15.

The communication path management section 13 includes a communication path in the base station interface section 11 and a base station interface section.
A communication path between the communication unit 11 and the private branch exchange communication unit 16 is managed, and a communication path is established or released in response to a call establishment request or a disconnection request from the personal handyphone communication control unit 12 and the interconnection unit 15. The movement management unit 14 manages the current position of all the slave units such as the slave units 102 and 302, that is, which base station is located in which base station of the base station cluster device, and the personal handyphone communication control unit 12 and In response to the inquiry from the connection unit 15, the base station cluster device number and the base station number are answered. The interconnection unit 15 includes a base station cluster device 10, a private branch exchange 20, and a base station cluster device in communication between slave units that span the base station cluster devices 10 and 30 via the private branch exchange 20.
It performs communication control between 30 and call control protocol conversion. The private branch exchange communication section 16 establishes, disconnects, and controls a line through a telephone line 2001-2010. For example, in the case of an ISDN line, the private branch exchange communication section 16 includes a Q.931 module or the like.

The control line communication section 17 controls communication of the control line 1000. For example, in the case of Ethernet, an Ethernet card, an Ethernet driver, a TCP / IP
It is composed of modules. The address conversion unit 18 receives the destination slave unit number and the destination base station cluster device number from the interconnecting unit 15 and converts them into the extension number of the destination base station cluster device and the slave unit number of the destination base station cluster device. . The telephone line interface 19 is a telephone line 2001-2010.
It exchanges control data with the private branch exchange communication unit 16 and establishes a communication path based on a request from the communication path management unit 13.

FIG. 3 is a configuration diagram of the base station cluster device 30 according to the first embodiment of the present invention. The configuration and functions of the base station cluster device 30 are the same as those of the base station cluster device 10 in FIG.

Next, the operation of the private wireless communication system according to the first embodiment will be described with reference to FIGS. Communication between slave units spanning between base station cluster devices will be described. FIG. 4 is a diagram showing a slave unit 102-base station 101-device 10-private branch exchange 20 in communication between slave units spanning between base station cluster devices.
FIG. 4 is an explanatory diagram of a communication sequence. FIG. 5 shows a private branch exchange 20 in communication between slave units spanning between base station cluster devices.
FIG. 3 is an explanatory diagram of a communication sequence of a base station cluster device 30, a base station 301, and a slave 302. 4 and 5
Are the base station cluster device 10 and the private branch exchange 2
0, a procedure for establishing a call for communication with the child device 302 across the base station cluster device 30.

The personal handyphone communication control unit in the base station cluster device 10 from the slave unit 102 via the base station 101
When a call setup message for performing communication with the slave unit 302 arrives at the personal handyphone communication control unit 12,
Inquires of the movement management unit 14 about the current position of the child device 302. As a result, the mobility management unit 14 notifies the personal handyphone communication control unit 12
Let them know you're inside. Thereby, the personal handyphone communication control unit 12 has the slave unit 302 to receive an incoming call in the base station cluster device 30 via the private branch exchange 20, and requires communication between the base station cluster devices 10 and 30, That is, in order to establish a call with the child device 302 across the base station cluster device 30,
And the identifier of the base station cluster device 30.

The interconnection unit 15 requests the communication path management unit 13 to set a communication path between the base station 101, the base station interface unit 11, and the telephone line interface unit 19. Thereby, the communication path management unit 13 can determine the unused channel number of the base station 101, the HWY address between the base station 101 and the base station interface unit 11, and the base station interface unit 11 and the telephone line interface unit. HW between 19
Get a Y address, an unused phone line (eg, 2001). Note that the channel information is associated as a communication ID.

Next, the communication path management unit 13 sends the base station 101, the base station cluster device 10 and the telephone line 2001 to the base station interface unit 11 and the telephone line interface unit 19.
A request is made to establish a communication path between them, and the communication ID is notified to the interconnecting unit 15. The interconnecting unit 15 requests the address converting unit 18 to convert the identifier of the base station cluster device 30 into a local extension number. Address translator
18 is a local extension number of the base station cluster device 30 (for example, 20
11) to the interconnect 15. The interconnecting unit 15 converts the call setting message including the destination number = private extension number (2011) and the destination sub = subunit 302 number, and passes the message to the private branch exchange communication unit 16.

The private branch exchange communication unit 16 makes a call from the telephone line 2001 to the private branch exchange 20 via the telephone line interface unit 19. Private branch exchange communication section 36 in base station cluster apparatus 30
Receives the above-described call setting message from the private branch exchange 20, and requests the incoming call with the destination sub = sub-unit number 302 to the interconnecting unit 35 because the destination sub is included in the message. The interconnecting unit 35 sends a call establishment request to the handset 302 to the personal handyphone communication control unit 32. As a result, the personal handyphone communication control unit 32 inquires of the movement management unit 34 about the current position of the child device 302. Thereby, the mobility management unit 34 notifies the personal handyphone communication control unit 32 that the slave unit 302 is inside the base station 301. Thereby, the personal handyphone communication control unit
32 requests the communication path manager 33 to attach a local extension number (2011) to which the call has been received, to set a communication path between the base station 301, the base station interface 31, and the telephone line interface 39. I do. Thereby, the communication path management unit 33
Unused channel number of base station 301 and base station 301
HWY address between the base station interface unit 31 and
Then, an HWY address and a telephone number (2011) between the base station interface unit 31 and the telephone line interface unit 39 are obtained. Note that the channel information is associated as a communication ID.

Next, the communication path management unit 33 sends the base station interface 301, the base station cluster device 30 and the telephone line 2011 to the base station interface unit 31 and the telephone line interface unit 39.
A request is made to establish a communication path between them, and the personal handyphone communication control unit 32 is notified of the communication ID. The personal handyphone communication control unit 32 notifies the interconnection unit 35 that the communication path has been established. The interconnecting unit 35 converts the call setting message including the called number = slave device 302 to the personal handyphone communication control unit 32.
The personal handyphone communication control unit 32 sends an incoming call message to the slave unit 302 in the base station 301. Thereby, handset 302 sends an incoming call response message to personal handyphone communication control unit 32 via base station 301. Thereby, the personal handyphone communication control unit 32
Sends a call setup message including which channel number to use to the child device 302 in the base station 301. As a result, the base station 301 receives the data sent from the base station interface unit 31 from the specified channel and sends it to the slave unit 302.

With the above operation, the slave unit 102-base station 101-
A call setup acceptance message, a call message, a response message, and a response confirmation message are exchanged between the base station cluster device 10-the private branch exchange 20-the base station cluster device 30-the base station 301-the slave unit 302, and the base station via the private branch exchange 20 A communication path between the child device 301 and the child device 302 across the cluster devices 10 and 30 is established.

When the extension number in the destination base station cluster device is busy, a re-calling means for making a re-call to another extension telephone number of the destination base station cluster device obtained from the address conversion means. In the first embodiment, in the first embodiment, a plurality of local extension numbers are obtained from the address translation unit, and when the interconnecting unit is busy at the destination, the call is re-transmitted with another local extension number. realizable.

As described above, in the first embodiment of the present invention, the private wireless communication system manages which base station the slave unit of the parent-child wireless communication system is located in between the base station cluster devices. And the address conversion for converting the destination slave unit number into the local extension number of the destination base station cluster device and the destination base station cluster slave unit number in which the destination slave unit is performing the current location registration. With the configuration including the unit, the user can specify the destination slave unit number and receive an incoming call even if the destination slave unit is in any parent-child communication system.

(Second Embodiment) A second embodiment of the present invention manages a base station in which a slave unit of a parent-child wireless communication system is located, manages the use state of a telephone line, and receives a call. Inquiry about the free line information to the communication line management unit in the base station cluster device in which the previous handset has registered the location, and the local radio which converts the called destination handset number into the free local extension telephone number and the cluster handset number. It is a communication system.

The configuration of the private wireless communication system according to the second embodiment of the present invention is the same as that of the first embodiment shown in FIG.

FIG. 6 is a configuration diagram of the base station cluster device 10 according to the second embodiment. The base station cluster device 10 includes a base station interface unit 11, a personal handyphone communication control unit 12, a communication path management unit 13, a movement management unit 14,
Interconnection unit 15, private branch exchange communication unit 16, control line communication unit
17, an address conversion unit 18, a communication line management unit 19, and a telephone line interface unit 1a. Base station interface section 11 exchanges control data between base stations 101 and 201 and personal handyphone communication control section 12, and establishes a communication path based on a request from communication path management section 13. The personal handyphone communication control unit 12
Inquires the current position of the destination slave unit to the mobility management unit 14, and when in the base station cluster unit 10, performs communication between slave units in the base station cluster unit 10.
Instructs the communication mode, and establishes, disconnects, and controls the line. If the called slave unit is in another base station cluster device 30 (slave unit 302), the establishment or disconnection of the call is entrusted to the interconnecting unit 15.

The communication path management section 13 includes a communication path in the base station interface section 11 and a base station interface section.
A communication path between the communication unit 11 and the private branch exchange communication unit 16 is managed, and a communication path is established or released in response to a call establishment request or a disconnection request from the personal handyphone communication control unit 12 and the interconnection unit 15. The movement management unit 14 manages the current position of all the slave units such as the slave units 102 and 302, that is, which base station is located in which base station of the base station cluster device, and the personal handyphone communication control unit 12 and In response to the inquiry from the connection unit 15, the base station cluster device number and the base station number are answered. The interconnection unit 15 includes a base station cluster device 10, a private branch exchange 20, and a base station cluster device in communication between slave units that span the base station cluster devices 10 and 30 via the private branch exchange 20.
It performs communication control between 30 and call control protocol conversion.

The private branch exchange communication section 16 has a telephone line 2001-2010.
This establishes, disconnects, and controls the line through the network. For example, in the case of an ISDN line, it is constituted by a Q.931 module or the like. The control line communication unit 17 controls communication of the control line 1000.
Ethernet card, Ethernet driver, TCP /
It is composed of an IP module. Address translation unit 18
Receives the destination slave unit number and the destination base station cluster unit number from the interconnecting unit 15 and converts them into the local extension number of the destination base station cluster unit and the slave unit number in the destination base station cluster unit. The communication line management unit 19 manages the current usage status of the telephone lines 2000-2010, and responds to the inquiry from the address conversion unit 18 with a vacant telephone line. The telephone line interface section 1a exchanges control data between the telephone lines 2001-2010 and the private branch exchange communication section 16, and establishes a communication path based on a request from the communication path management section 13.

FIG. 7 is a configuration diagram of the base station cluster device 30. The configuration and function of the base station cluster device 30 are as shown in FIG.
This is the same as the base station cluster device 10 of FIG.

Next, the operation of the private wireless communication system according to the second embodiment of the present invention will be described with reference to FIGS. Communication between slave units spanning between base station cluster devices will be described. FIG. 8 is an explanatory diagram of a communication sequence of the slave unit 102, the base station 101, the base station cluster unit 10, and the private branch exchange 20 in the communication between the slave units across the base station cluster units. FIG. 9 is an explanatory diagram of a communication sequence of the private branch exchange 20, the base station cluster device 30, the base station 301, and the slave unit 302 in the communication between slave units spanning between base station cluster devices. 8 and 9 show a procedure for establishing a call for communication from the slave unit 102 to the slave unit 302 across the base station cluster device 10, the private branch exchange 20, and the base station cluster device 30.

The personal handyphone communication control unit 12 in the base station cluster device 10 from the slave unit 102 via the base station 101
When a call setup message for performing communication with the slave unit 302 arrives at the personal handyphone communication control unit 12,
The mobile management unit 14 is inquired of the current position of the slave unit 302. Thereby, the mobility management unit 14 notifies the personal handyphone communication control unit 12 that the handset 302 is in the base station cluster device 30. As a result, the personal handyphone communication control unit 12 sends the incoming call to the
Is located in the base station cluster device 30 via the communication between the base station cluster devices 10 and 30 is necessary, that is,
In order to establish a call with the slave unit 302 across the base station cluster device 30, the address of the slave unit 302 and the identifier of the base station cluster device 30 are notified to the interconnecting unit 15.

The interconnection unit 15 requests the communication path management unit 13 to set a communication path between the base station 101, the base station interface unit 11, and the telephone line interface unit 1a. Thereby, the communication path management unit 13 can determine the unused channel number of the base station 101, the HWY address between the base station 101 and the base station interface unit 11, and the base station interface unit 11 and the telephone line interface unit. HW between 1a
Get a Y address, an unused phone line (eg, 2001). Note that the channel information is associated as a communication ID.

Next, the communication path management unit 13 sends the base station 101, the base station cluster device 10 and the telephone line 2001 to the base station interface unit 11 and the telephone line interface unit 1a.
A request is made to establish a communication path between them, and the communication unit 15 is informed of the communication ID and the communication line management unit 19 is notified that the telephone line 2001 is to be used. The interconnecting unit 15 requests the address converting unit 18 to convert the identifier of the base station cluster device 30 into a local extension number. The address conversion unit 18 is provided with a base station cluster device
Ask for 30 unused phone numbers. The communication line management unit 19
For the communication line management unit 39 in the base station cluster device 30,
An unused telephone number (for example, 2011) is inquired and obtained via the control line communication unit 17-control line 1000-control line communication unit 37-communication line management unit 39, and transmitted to the address conversion unit 18.

The address conversion unit 18 converts the unused base station cluster device 30 local extension number (for example, 2011) into the interconnection unit 15.
Tell The interconnection unit 15 determines that the called number = the local extension number (20
11), convert to a call setup message including the destination sub = sub-station 302 number, and pass it to the private branch exchange communication unit 16. The private branch exchange communication unit 16 communicates with the telephone line 20 via the telephone line interface unit 1a.
From 01, a call is made to the private branch exchange 20. Base station cluster device 30
The private branch exchange communication unit 36 receives the above-described call setup message from the private branch exchange 20 and includes a destination sub in the message. Ask for. The interconnecting unit 35 sends a call establishment request to the handset 302 to the personal handyphone communication control unit 32. As a result, the personal handyphone communication control unit 32 inquires of the movement management unit 34 about the current position of the slave unit 302.

Thus, the mobile management unit 34 sends the personal handyphone communication control unit 32
Notify that it is within 01. Accordingly, the personal handyphone communication control unit 32 sets the communication path between the base station 301, the base station interface unit 31, and the telephone line interface unit 3a, and informs the communication path management unit 33 of the extension number of the incoming call. (2011) attached. Accordingly, the communication path management unit 33 can determine the unused channel number of the base station 301, the HWY address between the base station 301 and the base station interface unit 31, and the base station interface unit 31 and the telephone line interface unit. Acquire HWY address between 3a and telephone number (2011). Note that the channel information is associated as a communication ID.

Next, the communication path manager 33 sends the base station 301, the base station cluster device 30 and the telephone line 2011 to the base station interface 31 and the telephone line interface 39.
A request is made to establish a communication path between them, and the personal handyphone communication control unit 32 is notified of the communication ID. The personal handyphone communication control unit 32 notifies the interconnection unit 35 that the communication path has been successfully established. The interconnecting unit 35 converts the call setting message including the called number = slave device 302 to the personal handyphone communication control unit 32. The personal handyphone communication control unit 32
An incoming call message is sent to the child device 302 in 1. Thereby, handset 302 sends an incoming call response message to personal handyphone communication control unit 32 via base station 301. Thereby, the personal handyphone communication control unit 32
Sends a call setup message including which channel number to use to the child device 302 in the base station 301. As a result, the base station 301 receives the data transmitted from the base station interface unit 31 from the specified channel and transmits the data to the slave unit 302.

With the above operation, the slave unit 102-base station 101-
A call setup acceptance message, a call message, a response message, and a response confirmation message are exchanged between the base station cluster device 10-the private branch exchange 20-the base station cluster device 30-the base station 301-the slave unit 302, and the base station via the private branch exchange 20 A communication path between the child device 301 and the child device 302 across the cluster devices 10 and 30 is established.

In the second embodiment, it has been described that the telephone line is ISDN. However, in the case of an analog line, designation of the destination sub may be realized by DTMF.

As described above, in the second embodiment of the present invention, the private wireless communication system is provided with a mobility management unit that manages which base station the slave unit of the parent-child wireless communication system is in, and a telephone line. The communication line management unit that manages the usage status and the communication line management unit in the destination base station cluster device in which the location of the destination slave unit is registered are queried for free line information, and the destination slave unit number is vacant. With the configuration provided with the internal extension telephone number and the address conversion unit for converting to the intra-cluster sub unit number, the user simply specifies the destination sub unit number,
Incoming calls can be made regardless of the parent-child wireless communication system.

[0054]

As described above, according to the present invention,
In a private branch wireless communication system in which a plurality of parent-child wireless communication systems are connected to a private branch exchange, a mobility management unit that manages a base station in which a slave unit of the parent-child wireless communication system is located across a base station cluster device; Since the address conversion unit for converting the precedent handset number into the local extension number of the cluster device in which the handset is registered and the intracluster handset number is provided, the user simply specifies the called handset number, There is an effect that incoming can be performed regardless of the parent-child wireless communication system.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a private wireless communication system according to a first embodiment of the present invention;

FIG. 2 is a configuration diagram of a base station cluster device according to the first embodiment of the present invention;

FIG. 3 is a configuration diagram of a base station cluster device according to the first embodiment of the present invention;

FIG. 4 is an explanatory diagram of a communication sequence of communication between child devices spanning a base station cluster device realized by the private wireless communication system according to the first embodiment of the present invention;

FIG. 5 is an explanatory diagram of a communication sequence of communication between child devices spanning a base station cluster device realized by the private wireless communication system according to the first embodiment of the present invention;

FIG. 6 is a configuration diagram of a base station cluster device according to the second embodiment of the present invention;

FIG. 7 is a configuration diagram of a base station cluster device according to a second embodiment of the present invention;

FIG. 8 is an explanatory diagram of a communication sequence of communication between child devices spanning a base station cluster device realized by the private wireless communication system according to the second embodiment of the present invention;

FIG. 9 is an explanatory diagram of a communication sequence of communication between child devices across a base station cluster device realized by the private wireless communication system according to the second embodiment of the present invention.

[Explanation of symbols]

 10 Base station cluster device 11 Base station interface unit 12 Personal handyphone communication control unit 13 Communication path management unit 14 Mobility management unit 15 Interconnection unit 16 Private branch exchange communication unit 17 Control line communication unit 18 Address conversion unit 19 Communication line management unit 1a Telephone line interface unit 20 Private branch exchange 30 Base station cluster unit 31 Base station interface unit 32 Personal handyphone communication control unit 33 Communication path management unit 34 Mobility management unit 35 Interconnection unit 36 Private branch exchange communication unit 37 Control line communication unit 38 Address conversion Unit 39 Communication line management unit 3a Telephone line interface unit 101 Base station 102 Slave unit 201 Base station 301 Base station 302 Slave unit 401 Base station

Claims (12)

[Claims] A plurality of base stations; a plurality of base station cluster apparatuses for bundling the plurality of base stations; a plurality of slave units; a plurality of parent-child communication systems connected to each other via a control line; In a private wireless communication system including a station cluster device and a private branch exchange connected by a telephone line, a call for communication is established between the private branch exchange and another base station cluster device in the base station cluster device. A private branch exchange communication means for disconnecting from the base station, control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station current position indicating the base station in which the base station is located. Mobility management means for managing between the station cluster devices, and the destination slave unit number and the extension number of the destination base station cluster device in which the current position of the slave unit is registered. Addressing means for converting a slave base station cluster number in a destination base station cluster. 2. A plurality of parent-child communication systems, each of which comprises a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, and is connected to each other by a control line. In a private wireless communication system including a station cluster device and a private branch exchange connected by a telephone line, in a base station cluster device, establishing a call for communication between the private branch exchange and another base station cluster device. A private branch exchange communication means for disconnecting, control line communication means for exchanging management information between the parent-child communication system through the control line, and a base station present position indicating the base station in which the base station is located in the base station. Mobility management means for managing between the cluster devices, and a plurality of extension telephone numbers of the destination base station cluster device in which the current location of the child device is registered, Address conversion means for converting the extension number and the slave base station number in the destination base station cluster, and the destination base station cluster apparatus obtained from the address conversion means when the extension number in the destination base station cluster apparatus is busy And a recalling means for recalling another private telephone number. 3. A plurality of parent-child communication systems comprising a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, and connected to each other by a control line. In a private wireless communication system including a station cluster device and a private branch exchange connected by a telephone line, in a base station cluster device, establishing a call for communication between the private branch exchange and another base station cluster device. A private branch exchange communication means for performing disconnection, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a slave unit indicating in which base station the slave unit in the parent-child communication system is located. Mobility management means for managing a position across the base station cluster device, and a plurality of telephone lines connecting the private branch exchange and the base station cluster device The communication line management means for managing the use status of the slave unit and the communication line management unit in the destination base station cluster apparatus in which the current position of the slave unit is registered with the destination slave unit number are queried for free line information. A private wireless communication system comprising: a local extension telephone number; and address conversion means for converting the telephone number into a destination base station cluster slave unit number. 4. A plurality of master-slave communication systems comprising a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, and connected to each other by control lines; In the base station cluster device of the private branch exchange system comprising a station cluster device and a private branch exchange connected by a telephone line, the private branch exchange communication means communicates with the private branch exchange and another base station cluster device. A call is established and disconnected, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means determines in which base station a slave unit in the parent-child communication system is located. Is managed across the base station cluster devices, and the address conversion means changes the destination slave unit number to the destination in which the slave unit current position is registered. A private wireless communication method comprising: converting a local extension number of a destination base station cluster device into a local telephone number within a destination base station cluster. 5. A plurality of parent-child communication systems comprising a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, and connected to each other by control lines; In the base station cluster device of the private branch exchange system comprising a station cluster device and a private branch exchange connected by a telephone line, the private branch exchange communication means communicates with the private branch exchange and another base station cluster device. A call is established and disconnected, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means determines in which base station a slave unit in the parent-child communication system is located. Is managed across the base station cluster devices, and the address conversion means changes the destination slave unit number to the destination in which the slave unit current position is registered. A plurality of local extension telephone numbers of the destination base station cluster device and a remote terminal number in the destination base station cluster are converted, and the re-calling means is configured to output the address when the local extension number in the destination base station cluster device is busy. A local wireless communication method, wherein a re-call is made to another local extension telephone number of the destination base station cluster device obtained from the conversion means. 6. A plurality of master-slave communication systems comprising a plurality of base stations, a base station cluster device for bundling the plurality of base stations, and a plurality of slave units, connected to each other by control lines, and the plurality of base stations. In the base station cluster device of the private branch exchange system comprising a station cluster device and a private branch exchange connected by a telephone line, the private branch exchange communication means communicates with the private branch exchange and another base station cluster device. A call is established and disconnected, control line communication means exchanges management information between the parent-child communication system through the control line, and mobility management means determines in which base station a slave unit in the parent-child communication system is located. Manages the current position of the slave unit across the base station cluster devices, and the communication line management means connects the private branch exchange and the base station cluster device. The address conversion means manages the usage status of the plurality of telephone lines, and the destination conversion unit stores the destination line number in the communication line management unit in the destination base station cluster device in which the current position of the child unit is registered. And converting the vacant extension telephone number and the destination base station cluster slave unit number into a vacant extension telephone number. 7. A private wireless communication base station system used in a private wireless system comprising a private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system comprises the private wireless communication base station system and a plurality of slave units. The private wireless communication base station system comprises a plurality of base stations and a base station cluster device that bundles the plurality of base stations, and the base station cluster devices are connected to the private branch exchange by a telephone line and mutually connected. Connected by a control line, in the base station cluster device, a private branch exchange communication means for establishing and disconnecting a call for communication between the private branch exchange and another base station cluster device, and the control line, Control line communication means for exchanging management information between the parent-child communication system, and in which base station Mobile management means for managing the current position of the slave unit across the base station cluster devices, and the destination extension number of the destination base station cluster device in which the current position of the slave device is registered. Addressing means for converting the number into a slave unit number in a destination base station cluster. 8. A private wireless communication base station system used in a private wireless system including a private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system is composed of the private wireless communication base station system and a plurality of slave units. The private wireless communication base station system comprises a plurality of base stations and a base station cluster device that bundles the plurality of base stations, and the base station cluster devices are connected to the private branch exchange by a telephone line and mutually connected. Connected by a control line, in the base station cluster device, a private branch exchange communication means for establishing and disconnecting a call for communication between the private branch exchange and another base station cluster device, and the control line, Control line communication means for exchanging management information between the parent-child communication system, and in which base station Mobility management means for managing the current position of the slave unit indicating the presence or absence between the base station cluster devices, and a plurality of extension lines of the destination base station cluster device in which the current position of the slave device is registered. Address conversion means for converting a telephone number and a slave base station number in a destination base station cluster, and the destination base station cluster obtained from the address conversion means when the local extension number in the destination base station cluster device is busy Re-calling means for re-calling another internal telephone number of the device. 9. A private wireless communication base station system used in a private wireless system including a private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system is composed of the private wireless communication base station system and a plurality of slave units. The private wireless communication base station system comprises a plurality of base stations and a base station cluster device that bundles the plurality of base stations, and the base station cluster devices are connected to the private branch exchange by a telephone line and mutually connected. Connected by a control line, in the base station cluster device, a private branch exchange communication means for establishing and disconnecting a call for communication between the private branch exchange and another base station cluster device, and through the control line. Control line communication means for exchanging management information between the parent-child communication system; Mobility management means for managing the current position of the slave unit, which indicates whether the mobile station is located within the base station cluster device, and managing the use status of a plurality of telephone lines connecting the private branch exchange and the base station cluster device. The communication line management unit and the destination sub-unit number are inquired to the communication line management unit in the destination base station cluster device in which the current position of the sub-unit is registered for free line information, Addressing means for converting the number into a slave unit number in a destination base station cluster. 10. A private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system is composed of a plurality of mobile stations, a plurality of base stations, and a base station cluster device that bundles the plurality of base stations. The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and establishes and disconnects a call for communication between the private branch exchange and another base station cluster device. A private branch exchange communication means, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a mobile station current position indicating in which base station the mobile station in the parent-child communication system is located. Management means for managing the base station cluster devices, and a destination base station class in which the current location of the mobile station is registered. A mobile station used in a local area wireless system including a local extension number of a mobile station apparatus and an address conversion means for converting the mobile station number into a slave unit number in a destination base station cluster, wherein the mobility management of the base station cluster apparatus is performed via the base station. A mobile station, comprising: means for registering a current position in the means; and means for receiving a call using a base station cluster slave unit number of the base station cluster device in which the current position is registered. 11. A private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system includes a plurality of mobile stations, a plurality of base stations, and a base station cluster device that bundles the plurality of base stations. The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and establishes and disconnects a call for communication between the private branch exchange and another base station cluster device. A private branch exchange communication means, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a mobile station current position indicating which base station the mobile station in the parent-child communication system is located in. Mobility management means for managing the base station cluster devices, and a destination base station cluster device in which the current location of the mobile station is registered. Address conversion means for converting a plurality of local extension telephone numbers and a destination base station cluster slave unit number, and a call received from the address conversion means when the local extension number in the destination base station cluster device is busy. A mobile station used in a local wireless system having a re-calling means for making a re-call to another local extension telephone number of the destination base station cluster device, wherein the mobility management means of the base station cluster device is transmitted via the base station. A mobile station comprising: means for registering a current position in the mobile station; and means for receiving an incoming call based on a slave unit number in the base station cluster of the base station cluster device in which the current position is registered. 12. A private branch exchange and a plurality of parent-child communication systems, wherein the parent-child communication system is composed of a plurality of mobile stations, a plurality of base stations, and a base station cluster device that bundles the plurality of base stations. The base station cluster device is connected to the private branch exchange by a telephone line and connected to each other by a control line, and establishes and disconnects a call for communication between the private branch exchange and another base station cluster device. A private branch exchange communication means, a control line communication means for exchanging management information between the parent-child communication system through the control line, and a mobile station current position indicating which base station the mobile station in the parent-child communication system is located in. Mobility management means for managing between the base station cluster devices, and use of a plurality of telephone lines connecting the private branch exchange and the base station cluster device. The communication line management means for managing the usage status, and the destination line number is queried by inquiring of the communication line management means in the destination base station cluster apparatus in which the mobile station current position is registered for free line information. In a mobile station used in a local area wireless system including an extension telephone number and an address conversion means for converting an extension telephone number into a destination base station cluster slave unit number, the movement management means of the base station cluster apparatus is currently connected to the mobile station through the base station. A mobile station comprising: means for registering a position; and means for receiving an incoming call by using a slave unit number in a base station cluster of the base station cluster device in which the current position is registered.