KR20060072325A - Wireless office system capable of roaming and its roaming method - Google Patents

Abstract

The present invention relates to an on-premises wireless network service, and more particularly, to a method for providing on-premises wireless network service between headquarters and branch offices, which is divided locally. A plurality of on-premises wireless networks interworking with a global land network (PLMN) In the premises wireless network system for supporting roaming service between the services, Supports its own private communication service with the public network service interworking with the global communication network for the first predetermined terminal registered in the first predetermined region A first premises wireless network device; A second premises wireless network device that supports its own private communication service together with a public network service interworking with the global communication network for a second predetermined terminal registered in a second predetermined region; And manage subscriber information of a terminal registered in the first premises wireless network device and the second premises wireless network device, wherein the location information is displayed when the first predetermined terminal moves to the second premises wireless network device. And a location register for registering with the first campus wireless network device and the second campus wireless network device.

On-premises wireless network, roaming, home zone, roaming zone, PLMN

Description

Roamable campus wireless network system and its roaming method {Wireless Office System Capable of Roaming and its Roaming Method}             

1 is a configuration diagram of an embodiment of a typical premises wireless network system.

2 is a diagram illustrating an embodiment of a premises wireless network system supporting roaming between different regions according to the present invention;

3 is a flowchart illustrating an embodiment of a location registration process in a roaming zone according to an embodiment of the present invention;

4 is a flowchart illustrating an embodiment of a roaming method in a premises wireless network for ensuring service mobility between premises wireless networks according to the present invention;

The present invention relates to an on-premises wireless network service, and more particularly, to a method for providing on-premises wireless network service between regional headquarters and branch offices.

In general, on-premises wireless network service is a wired / wireless hybrid service that allows a user to use both a mobile phone and an on-site phone at the same time. A single mobile phone is used as an intercom in the company (or school, factory, building, etc.). And when talking to the outside is a system used as a mobile phone terminal in the existing mobile communication network. In other words, the mobile phone terminal is utilized as the premises telephone, so that a call with a person in the same premises can be made free of charge. Hereinafter, such an on-premises wireless network service will be referred to as 'WOS (Wireless Office System)'. Here, the WOS is a CDMA-based on-premises wireless communication device, which assigns an extension number to a mobile communication subscriber located in an enterprise, and allows each other to call as an extension number, and provides an interworking function with an on-premises exchange device to provide a mobile communication terminal. Provides a service for making an extension call between a landline telephone of an on-premises exchange device.

1 is a configuration diagram of an exemplary embodiment of a general premises wireless network system.

As shown in FIG. 1, the premises wireless network is interworked with a PLMN 100. In this figure, the global communication network 100 is linked to a general mobile communication network, a public switched telephone network (PSTN), an integrated services digital network (ISDN), and an internet protocol (IP) network. . Through the following description will be described with respect to the mobile communication network of the PLMN (100).

A typical mobile communication network is a plurality of base stations connected to a plurality of switching centers (Mobile Switching Centers, hereinafter referred to as MSCs) 102-1 and 102-2 and respective MSCs 102-1 and 102-2. Controller (hereinafter referred to as BSC) 103, and a plurality of base stations connected to each BSC 103 (BTS: Base Transceiver Station (hereinafter referred to as BTS)). From a single base station, it communicates wirelessly with a mobile station (hereinafter referred to as MS). Each of the MSCs 102-1 and 102-2 is connected to a Home Location Resister (HLR) 101 to form an overall mobile communication network system.

In the mobile communication network, the premises wireless networks 108-1 and 108-2 are premises wireless network service devices 104-1 and 104-2 for routing premises wireless network services and public network services connected to the PLMN 100. It belongs to a plurality of Radio Network Controllers (RNCs) / BTSs 106-1 and 106-2 interworking with the wireless network service devices 104-1 and 104-2 and the premises wireless networks 108-1 and 108-2. Mobile communication through a local wireless network and a normal mobile communication network to a MS subscribed to a local wireless network and a normal mobile communication network composed of pHLRs (private HLR) 105-1 and 105-2 for location registration with respect to a terminal. Provide service.

In the conventional premises wireless network as shown in FIG. 1, the mobile terminal (MS) is provided with specialized premises wireless network service only in a specific area (for example, a limited premises wireless network area such as 108-1 or 108-2). In the case of moving to (i.e., moving from area 108-1 to area 108-2), it was not possible to support the same wireless network service as before.

This is because in-house wireless network service has independent service and numbering system for each area or corporation, it is possible to make outgoing / incoming service according to normal in-house wireless network only in the area of wireless network where subscribers of in-house wireless network are subscribed to. Incorporation does not allow outgoing / incoming services based on such wireless networks.

However, assuming that the premises wireless network 108-1 and the premises wireless network 108-2 are the concepts of the head office and the branch belonging to the same corporation, it is necessary to support roaming of such different premises wireless networks. More specifically, for example, assume that the premises wireless network 108-1 and the premises wireless network 108-2 are the head office "A1" of the company "A" and the branch office "A2", and the head office "A1" of the company "A". When an employee "B" travels to a business branch office "A2", it is convenient to carry out the business communication on "B" through the connection of a normal premises wireless network. If the "B" has been contacted, it is a problem that not only the party "B" but also other co-workers to be notified of the fact that the trip is received and informed of the contact to the destination is consumed for unnecessary work. Therefore, even if they are separated from each other locally, it is necessary to make a connection according to the premises wireless network.

However, the current roaming service between premises wireless networks is not supported in the premises wireless network service.

The present invention has been proposed to meet the above requirements, and roaming in the premises that can be roamed to ensure service mobility between premises wireless network for the mobile terminal joined to the premises wireless network in the premises wireless network system interworking with the PLMN It is an object of the present invention to provide a wireless network system and a roaming method thereof.

According to an aspect of the present invention, there is provided a premises wireless network system for supporting a roaming service between a plurality of premises wireless networks linked to a public land mobile network (PLMN). A first premises wireless network device supporting an own private communication service together with a public network service interworking with the global communication network for a first predetermined terminal registered in a region; A second premises wireless network device that supports its own private communication service together with a public network service interworking with the global communication network for a second predetermined terminal registered in a second predetermined region; And manage subscriber information of a terminal registered in the first premises wireless network device and the second premises wireless network device, wherein the location information is displayed when the first predetermined terminal moves to the second premises wireless network device. And a location register for registering with the first campus wireless network device and the second campus wireless network device.

In addition, the present invention, roaming service according to the movement of the first predetermined terminal in the on-premises wireless network system for supporting roaming service between a plurality of on-premises wireless network that is linked to the PLMN (Public Land Mobile Network). A method, comprising: a first step of registering a change in position according to a movement of the first predetermined terminal; After the registration of the first step, when there is a call connection request for a second predetermined terminal in a first premises wireless network in which the first predetermined terminal is initially registered, a second in which the first predetermined terminal is currently located A second step of the premises wireless network requesting a translation of the number according to the call connection request for the first premises wireless network; A third step of requesting, by the second premise wireless network, location information for the second predetermined terminal according to the translated number; And a fourth step of performing a call connection between the second predetermined terminal and the first predetermined terminal according to the location information of the second predetermined terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the drawings are represented by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a diagram illustrating an embodiment of a premises wireless network system supporting roaming between different regions according to the present invention.

As shown in FIG. 2, the premises wireless network supporting roaming between different regions according to the present invention is interworked with a PLMN 200. In this figure, the global communication network 100 is linked to a general mobile communication network, a public switched telephone network (PSTN), an integrated services digital network (ISDN), and an internet protocol (IP) network. . Through the following description will be described with respect to the mobile communication network of the PLMN (200).

A typical mobile communication network is a plurality of base stations connected to a number of mobile switching centers (MSCs) 202-1 and 202-2 and respective MSCs 202-1 and 202-2. Controller (hereinafter referred to as BSC) 203, and a plurality of base stations (BTSs) connected to each BSC 203, and are referred to as the end of a mobile communication network connected by wire. From a single base station, it communicates wirelessly with a mobile station (hereinafter referred to as MS). Each of the MSCs 202-1 and 202-2 is connected to a home location register (HLR) 201 to form an overall mobile communication network system.

In such a mobile communication network, the premises wireless networks 208-1 and 208-2 are the premises wireless network service devices 204-1 and 204- that route the premises wireless network service which is a private communication network service and the public network service connected to the PLMN 100. 2) a plurality of radio network controllers (RNCs) / BTSs 206-1 and 206-2 interworking with the premises wireless network service devices 204-1 and 204-2, and the premises wireless networks 208-1 and 208-. It is composed of pHLR (private HLR) 205-1, 205-2, etc. for location registration for the UE belonging to 2), and the MS is subscribed to the local wireless network and the normal mobile communication network. Provides mobile communication services through.

In the embodiment according to the present invention, not only the global communication network 100 and the premises wireless network 208-1, 208-2 are connected, but also the roaming between the premises wireless network 208-1, 208-2. The location register 209 is further included in the communication network 100.

The location register 209 is for supporting roaming between the premises wireless networks 208-1 and 208-2, and is for registering the locations of subscribers of the premises wireless network included in the same corporation or the like for supporting roaming. That is, the location register 209 records the information of the terminal in order to maintain the same premises wireless network service for the terminal moved from the premises wireless network 1 208-1 to the premises wireless network 2 208-2. In addition, the mobile station performs a function of notifying the movement of the terminal to the home premises wireless network (for example, 208-1) and the roaming premises wireless network (for example, 208-2) to which the terminal has moved.

Here, the premises wireless network 208-1 of FIG. 2 is referred to as a home zone in which a premises wireless network is registered for a predetermined terminal, and the premises wireless network 208-2 is located in another area of the same corporation capable of roaming service. It is called a roaming zone in the campus wireless network.

Prior to describing the embodiments of the present invention, when describing a home zone and a roaming zone, a home zone means an on-premises wireless network in which a corresponding terminal is registered, and a roaming zone is registered in a corresponding terminal. Although not, it means an on-premises wireless network that can receive on-premises wireless network services.

In a typical premises wireless network, in a home zone where a predetermined terminal is registered, an on-premises wireless network service including an outgoing / receiving service for a predetermined terminal is possible, and in a home zone Although mobility is guaranteed, when a given terminal leaves the home zone, a service by a mobile communication network may be provided through authentication of the authority of the predetermined terminal in the global communication network (PLMN), but wireless in the premises You cannot receive services by the network.

In particular, in the mobile communication network of the global communication network (PLMN), an individual for supporting a plurality of premises wireless networks such as specific corporate information in a home location register (hereinafter referred to as HLR) that manages the authority and location management of a terminal. However, because it does not manage corporate information, it is difficult to support the service provided by the on-premises wireless network.

Accordingly, an embodiment of the present invention includes a location register 209 that manages individual or corporate information for supporting a plurality of campus wireless networks. Assuming that a terminal B registered in one premises wireless network A visits a premises wireless network C belonging to the same corporation, the premises wireless network A is a home zone and the premises wireless network C is a roaming zone.

In this case, the terminal B registers with the location register 209 that the mobile station C has moved from the local wireless network A, which is its home zone, to the local wireless network C, which is a roaming zone.

3 shows a registration process with the location register 209 according to the movement to the roaming zone.

In the system shown in FIG. 2, the wireless network in the premises is described as performing an independent MSC. However, even if the wireless network does not function as an independent MSC, the wireless network performs an operation in conjunction with the MSC of the adjacent mobile communication network. It is possible to do

3 is a flowchart illustrating an embodiment of a location registration process in a roaming zone according to an embodiment of the present invention.

As shown in FIG. 3, when a terminal 31 belonging to a premises wireless network 208-1 which is a home zone moves to a roaming zone 208-2 which is a premises wireless network belonging to the same corporation, an premises wireless network service such as a home zone in a roaming zone In the location registration process for receiving the information, the terminal 31 moving to the roaming zone 208-2 requests a location registration through the roaming zone 208-2 and the roaming zone 208-2 registers the location register ( 209 transmits the location register 209 to the on-premises wireless network service device 204-1 of the home zone 208-1 to change the location of the terminal 31 to the roaming zone 208-2. Location registration. As a result, in the subsequent call to the terminal 31 to the home zone 208-1, it automatically connects to the roaming zone 208-2 so that the premises wireless network service for the terminal 31 is performed. can do.

In more detail about the above process, first, if the terminal 31 belonging to the premises wireless network 208-1, which is the home zone, moves to the roaming zone 208-2, which is the premises wireless network belonging to the same corporation, the premises wireless, such as the home zone, in the roaming zone In order to receive the network service, the terminal 31 requests location registration to the RNC / BTS 206-2 of the premises wireless network 208-2 (301). The RNC / BTS 206-2 requests location registration to the location register 209 through the on-premises wireless network service device 204-2 (302, 303). The location register 209 having received the location registration request grasps information about the terminal 31 and locates it in the premises wireless network service device 204-1 of the premises wireless network 208-1 which is the home zone of the terminal 31. Require registration (304).

The on-premises wireless network service device 204-1 of the home zone, which has been requested to register a location from the location register 209, changes the location information on the corresponding terminal 31 to the on-premises wireless network 208-2, which is a roaming zone, and places it. Forward to register 209 (305). The location register 209 registers the changed location of the corresponding terminal 31 and reports the change to the premises wireless network service device 204-2 and the RNC / BTS 206-2 of the premises wireless network 208-2 which are roaming zones. It transmits to the terminal 31 through 2).

In the above, the location register 209 performs an authentication process on whether the terminal can use an internal call of the wireless network when a location registration function for the mobile station and a call request of the wireless network to the specific terminal.

The subscriber management of the premises wireless network can be provided in various ways, one of which is handled by the subscriber management program of the premises wireless network, and the second is to use the HLR of the PLMN. It is also possible to provide subscriber management by having a layered location register 209 layered separately from the HLR of the PLMN.

However, the location of the component for managing the subscriber is in the operational sense and does not limit where to put in the present invention. However, the location register 209 that performs the function will be specified to describe the characteristics of the function.

Referring to FIG. 4, a process of performing an on-premises wireless network service for a terminal having moved to a roaming zone as described above is described in more detail.

4 is a flowchart illustrating an embodiment of a roaming method in a premises wireless network for ensuring service mobility between premises wireless networks according to the present invention.

4 illustrates a roaming method in a premises wireless network for guaranteeing service mobility between premises wireless networks according to the present invention, for a predetermined terminal (MS-H) 42 located in a home zone. The roaming service in the premises wireless network will be described through an example in which a terminal (MS-R) 41 registered in the zone attempts to connect a call according to the premises wireless network. On the contrary, the description is omitted since the analogy is possible through this example.

First, when a roaming terminal (MS-R) 41 requests an internal call in accordance with an on-premises wireless network service in a roaming zone 208-2 (401, 402), the roaming zone 208-2 makes a call request. If the translation of the calling number and the called number of the roaming terminal (MS-R) 41 is not possible and the translation is not possible with the number translation system of the roaming zone 208-2, the location register ( The home zone 208-1 registered by 209 requests translation about the corresponding number (403), performs the number translation according to the number system of the premises wireless network to which the terminal belongs, and receives the result (404). ). Here, the number translation means the registered information on the calling number and the called number. It is assumed that each local wireless network registers the number according to its own system. It means that the calling terminal and the called terminal are distinguished using the registered information on the number. Therefore, the roaming terminal (MS-R) 41 registered in the home zone 208-1 is connected to the terminating terminal (MS-H) 42 of the home zone 208-1 via the on-premises wireless network service. If a call connection is attempted, the roaming zone 208-2 cannot translate it because the numbering system for this call is incorrect and requests the translation to the home zone 208-1.

As a result of the number translation, the terminating terminal (MS-H) 42 is identified, so that the roaming zone 208-2 is connected to the terminating terminal (MS-H) 42 with respect to the home zone 208-1. The location request is made (405, 406). At this time, the number translation request 403 or 404 for the home zone 208-1 may be performed together with the location request process for the called terminal (MS-H) 42. The location request is made because the called terminal (MS-H) 42 may also be roamed to another premises wireless network. In the home zone 208-1, as described above with reference to FIG. 3, location information on terminals roaming using the location register 209 is registered, and thus, the MS-H 42 is different from that of the current destination terminal (MS-H) 42. Even when located in a wireless network, it is possible to provide the information in the home zone 208-1.

If the terminating terminal (MS-H) 42 belongs to the home zone 208-1, the terminating terminal (MS-R) is used as the position response (405, 406) of the terminating terminal (MS-H) 42. A call setup process for 41 is performed and call setup 407, paging 408, 409, 412, 413 and channel assignment 416 for the called terminal (MS-H) 42. Call 420 is connected between the roaming zone 208-2 and the home zone 208-1 through the process of step 417, 418, and 419 (step 421).

On the other hand, when the terminating terminal (MS-H) 42 does not belong to the home zone 208-1, the location response to the predetermined premises wireless network roaming by the terminating terminal (MS-H) 42 ( A call setup process for the calling terminal (MS-R) 41 is performed to 405 and 406, and a call setup 407 for the called terminal (MS-H) 42, paging 408, 409, 412, 413 and channel assignments 416, 417, 418, and 419, the call is connected 420 between the roaming zone 208-2 and the home zone 208-1 and a call is made accordingly ( 421).

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited by the drawings.

 The present invention as described above, if the headquarters and branch offices in a single corporation and the head office and branch offices are using different on-premises wireless network to support roaming services between these on-premises wireless network to enable a low-cost service It works.

In addition, there is an effect that the same VPN number used in the home zone can be used in the same headquarters or branch offices of other campus wireless networks.

In addition, each legal entity has the effect of providing more value-added services by linking the subscriber data base managed by the company.

Claims (9)

In the premises wireless network system for supporting roaming service between a plurality of premises wireless network that is linked to the Public Land Mobile Network (PLMN), A first premises wireless network device that supports its own private communication service together with a public network service interworking with the global communication network for a first predetermined terminal registered in a first predetermined area; A second premises wireless network device that supports its own private communication service together with a public network service interworking with the global communication network for a second predetermined terminal registered in a second predetermined region; And Manages subscriber information of terminals registered in the first campus wireless network device and the second campus wireless network device, and transmits the location information when the first predetermined terminal moves to the second campus wireless network device; A roaming campus wireless network system including a campus wireless network device and a location register for registering with the second campus wireless network device. The method of claim 1, The location register, When the first predetermined terminal moves to a second premises wireless network area managed by the second premises wireless network device, Receiving a location registration request from the first predetermined terminal through the second premises wireless network device, requesting a location registration with respect to the first predetermined terminal to the first premises wireless network device; Roaming is characterized in that the location of the change received from the first wireless network device received from the registration and transfer the registered result to the second wireless network device and the first predetermined terminal to perform the location registration Possible on-premises wireless network system. The method according to claim 1 or 2, The second campus wireless network device for providing the campus wireless network service for the first predetermined mobile terminal, Roaming campus wireless network system characterized in that the authentication of the internal call service of the second campus wireless network for the first predetermined terminal using the terminal information stored in the location register. The method according to claim 1 or 2, wherein the location register, Roamable campus wireless network system, characterized in that implemented in the Home Location Register (HLR) of the public network mobile communication system included in the global communication network. The method according to claim 1 or 2, wherein the location register, Roamable campus wireless network system, characterized in that implemented on at least one of the first campus wireless network device to the second campus wireless network device. In the roaming service method according to the movement of the first predetermined terminal in the premises wireless network system for supporting a roaming service between a plurality of premises wireless networks that are linked to a global communication network (PLMN), A first step of registering a change of location according to the movement of the first predetermined terminal; After the registration of the first step, when there is a call connection request for a second predetermined terminal in a first premises wireless network in which the first predetermined terminal is initially registered, a second in which the first predetermined terminal is currently located A second step of the premises wireless network requesting a translation of the number according to the call connection request for the first premises wireless network; A third step of requesting, by the second premise wireless network, location information for the second predetermined terminal according to the translated number; And And a fourth step of performing a call connection between the second predetermined terminal and the first predetermined terminal according to the location information of the second predetermined terminal. The method of claim 6, The first step is, A fifth step of the first predetermined terminal moving to the second campus wireless network requesting a change of location through the second campus wireless network; In response to the location change request, requesting a location change to the first premises wireless network through a location register that manages terminal information of the premises network system; A seventh step in which the first premises wireless network requested to change the location of the sixth step changes the location of the first predetermined terminal to the second premises wireless network and transfers it to the location register; And And the eighth step of registering, by the location register, the changed location information and transmitting the changed location information to the second campus wireless network and the first predetermined terminal. . The method according to claim 6 or 7, The number translation, As a system of a called number and a calling number between the first premises wireless network and the second premises wireless network is different, the first connection request is made by the first predetermined terminal registered in the first premises wireless network. Roaming service method in the premises wireless network, characterized in that receiving information about the corresponding calling number and called number through the premises wireless network. The method of claim 8, The fourth step, A ninth step of making a paging request for the second predetermined terminal through a call manager of a predetermined premises wireless network in which the second predetermined terminal is located according to the position information of the second predetermined terminal and receiving a response thereof; A tenth step of the call manager of the predetermined premises wireless network assigning a channel for the second predetermined terminal and connecting through the assigned channel through the response; And A roaming service in a premises wireless network comprising an eleventh step of performing a call connection between the second predetermined terminal and the first predetermined terminal through a connection between the predetermined premises wireless network and the second premises wireless network. Way.

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