KR20100078994A - Femto cell and method for managing subscriber and offering service - Google Patents

Abstract

PURPOSE: A service providing method, a subscriber managing method, and an indoor base station are provided to enable a subscriber of an indoor base station to join another indoor base station area except an indoor base station area of the subscriber. CONSTITUTION: A paging message transceiver(22) transmits a paging message to a terminal of a home or visit subscriber according to subscriber information. The paging message transceiver receives a response message about the paging message. The paging message transceiver receives a registration request message of the visit subscriber. A network management unit(23) manages location information of the home subscriber. The network management unit obtains indoor base station information of the visit subscriber.

Description

Service delivery method, subscriber management method and indoor base station {FEMTO CELL AND METHOD FOR MANAGING SUBSCRIBER AND OFFERING SERVICE}

The present invention relates to a mobile communication system, and in particular, in a mobile communication system in which a plurality of indoor base stations exist, an indoor base station, a subscriber management method and a service which can manage a subscriber when a subscriber station moves out of a base station control area to which it belongs. It is about a provision method.

Recently, due to the rapid development of communication, computer network, and semiconductor technology, various services using wireless communication networks are being provided, and demands of consumers are increasing day by day, and the global market for wireless internet services is exploding. It is a trend. Accordingly, a service provided by a mobile communication system using a wireless communication network is developing not only a voice service but also a multimedia communication service for transmitting various data.

As wireless data services such as Code Division Multiple Access (CDMA) 2000, EV-DO, WCDMA, and WLAN are commercially available, the demand for mobile phones and mobile data is continuously increasing in homes. A method of providing a mobile communication service by installing a small mobile communication base station in a premises to access a mobile communication core network through a network has been proposed. Such a small mobile communication base station is called a femto cell. Femto is a unit representing 10 ^-15 and has a radius smaller than that of a pico cell having a radius of a femtocell of several tens of meters and a cell radius within 100 m. The main feature and advantage of the femtocell is that, unlike the fixed mobile convergence (FMC) service based on UMA (Unlicensed Mobile Access), which requires dual-mode terminals, the current mobile phone can be used in the femtozone. . Accordingly, femtocells are expected to be able to act as a gateway for home network services in the home as well as effects such as rate cuts, increased coverage of mobile communication networks, and reduced network operating costs.

A femtocell is a base station with all functions minimized compared to a macrocell (i.e., an outdoor base station (NodeB; 3G broadband base station, eNodeB (evolved NodeB); 4G EPS)). Subscribers can be accommodated and installed directly by the network operator or subscriber. In addition, the connection with the mobile communication core network (public IP network) may be connected via a separate communication network connecting femtocells, or through the Internet in a general home using a high-speed Internet service.

The femtocell is connected to the wired IP network, which is connected to the mobile communication network. There are two ways to access the mobile communication network, one to be connected to the mobile communication line network and the other to be connected to the mobile communication IP network.

When connected to a mobile communication line network, the RNC (Radio Network Controller) can be used as it is via a mobile communication core network, and there is no need to install a special device in the mobile communication network. On the other hand, data communication is difficult as much as using voice communication network.

There are two ways to connect with mobile IP network, UMA (Unlicensed Mobile Access) type and IMS & SIP type. UMA can use voice (VoIP) and data communication services while connected to a wired IP network. In this case, a separate corresponding terminal is required. In case of UMA type femtocell, it connects to mobile communication IP network through wired IP network. In this case, the user can use the existing terminal as it is, but the mobile communication provider must separately install a device called a UMA-compatible network controller (UNC). The IMS & SIP type presupposes that the mobile communication network corresponds to the IMS (IP Multimedia System) of the All IP type.

At present, the method of attaching a terminal through a femtocell is still being standardized, and detailed procedures are not yet defined. However, only the registration method of the terminal through the macro cell is defined. This is as follows.

In the current 3G WCDMA system, the terminal performs initial location registration by performing a registration process by power-on for network use, and thereafter, periodically or periodically through a location information (RA) update. The location information of the terminal is updated by a timer. In this case, the updated location information (RA) is information for managing mobility of a terminal in a network, and is used as paging information for a service request received from the terminal, or an additional service such as a location based service (LBS). Used for provision

Referring to FIG. 1, a process of attaching a terminal through an outdoor base station NodeB in a 3G WCDMA system will be briefly described.

When the UE is powered on (101), an outdoor base station (NodeB) and a radio link (Signalling Radio Bearer-SRB) is connected to the Iu interface for communication with the Serving GPRS Support Node (SGSN) (102,103).

The UE transmits an Attach Request message to the SGSN (104). Then, SGSN transmits a MAP-Update GPRS Location message to the Home Location Register (HLR) when the information of the subscriber to be attached does not exist (105), and the HLR transmits the information of the subscriber. Send to the SGSN via the message " MAP-Insert Subscriber Data " (106). In response, the SGSN sends a "MAP-Insert Subscriber Data Ack" message to the HLR (107). Here, the HLR sends a response to the subscriber information request message (SGP-Update GPRS Location Ack) message from the SGSN to the SGSN (108).

The SGSN transmits an Attach Accept message to the UE (109).

When UE receives Packet Temporary Mobile Station Identity (P-TMSI) information through Attach Accept message, it saves this information normally and sends confirmation message that P-TMSI is well received to SGSN through Attach Complete message. (110).

UE (UE) releases the radio link and the Iu interface connected to the above (111,112). Now, the UE is managed in a state where service through the SGSN is possible.

Home (e) The subscriber management method in NodeB is largely proposed by the Open Subscriber Group (OSG) method and the Closed Subscriber Group (CSG) method. Currently, standardization is in progress for which method is more efficient.

The present invention provides an indoor base station, a subscriber management method, and a service providing method that can manage a subscriber when a subscriber station leaves a base station control area to which a subscriber station belongs in a mobile communication system having a plurality of base stations.

The indoor base station of the present invention is a group subscriber operative to store information of a subscriber using a service through the indoor base station, whether the subscriber is a home or visiting subscriber, location information of a home subscriber, and indoor base station information of a visiting subscriber. An information storage unit; A paging message transmitting and receiving unit operable to transmit a paging message to a terminal of the home or visiting subscriber based on the information, receive a response message, and receive a registration request message of the visiting subscriber; And a network manager operable to maintain or change the location information of the home subscriber and to obtain indoor base station information of the visited subscriber based on the registration request message.

In addition, the subscriber management method of the mobile communication system of the present invention, a) subscriber information to use the service through the indoor base station, whether the home or visiting subscriber of the subscriber, the location information of the home subscriber and the indoor visitor's indoor Registering base station information; b) sending a paging message to the terminal of the home or visiting subscriber based on the information; c) receiving a response message to the paging message; d) maintaining or changing location information of the home subscriber according to whether the response message is received; e) receiving a registration request message of the visited subscriber; And f) acquiring indoor base station information of the visited subscriber based on the registration request message.

In addition, the service providing method of the present invention comprises the steps of: receiving an incoming service request for a particular indoor base station subscriber station; Transmitting a location information request message to a home indoor base station of the subscriber station; Transmitting, by the home indoor base station receiving the terminal location information request message, a terminal location information acknowledgment message including information of another indoor base station controlling the subscriber station; Performing a paging procedure with the other indoor base station; Performing an authentication procedure of the subscriber station; And providing the incoming service.

In addition, the service providing method of the present invention comprises the steps of: transmitting an outgoing service request message including an indoor base station ID for managing a particular subscriber station; Transmitting a terminal location information request message to a home indoor base station including the subscriber terminal information; If the subscriber station is a terminal belonging to the home indoor base station, transmitting the terminal location information response message confirming that the subscriber terminal belongs to the home indoor base station; Performing an authentication procedure of the subscriber station; And providing the originating service.

According to the present invention, an indoor base station [Home (e) NodeB] subscriber can attach to an indoor base station area other than his indoor base station area, and can receive various types of existing indoor base station areas. The service can be equally provided in other indoor base station areas.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions will not be described in detail if they obscure the subject matter of the present invention.

In the present invention, the 'indoor base station' is a femtocell, that is, a "Home NodeB" in a 3G W-CDMA system that is currently commercialized, and EPS, which is a representative technology of 4G broadband mobile communication [eg, LTE / SAE (Long). Term Evolution / System Architecture Evolution)] is a concept including a femtocell, ie, a "Home eNodeB" in a system. Hereinafter, indoor base stations for 3G / 4G subscribers will be collectively referred to as "Home (e) NodeB".

Indoor base station [Home (e) NodeB] is a base station that is installed in homes, businesses, etc., the size is simple and designed to be easily installed indoors, such as a conventional wireless access point (AP). Indoor base stations include home indoor base stations which are individually installed in homes and used in homes, and indoor indoor base station groups that can be installed in businesses and the like in groups.

In the present invention, 'home subscriber' refers to a subscriber of a terminal registered in a group subscriber information storage unit of a home indoor base station, and 'visit subscriber' refers to a subscriber of an indoor base station other than the home indoor base station. The subscriber of the terminal registered in the group subscriber information storage. At this time, the terminal moves from the area of its home indoor base station to the area of the other indoor base station (indoor to indoor handover), or from the area of the other indoor base station to the area of its home indoor base station ( Indoor-to-indoor handover) or from the indoor base station to the outdoor base station (indoor-to-outdoor handover).

Hereinafter, the indoor base station should be interpreted as a concept including both a home indoor base station and a corporate indoor base station group, and the terminal is a 3G / 4G subscriber operating in a mobile communication system composed of its indoor base station / other indoor base stations. UE means User Equipment (UE).

In the indoor base station [Home (e) NodeB], the subscriber management method has largely been proposed by the OSG (Open Subscriber Group) method and the CSG (Closed Subscriber Group) method. The OSG method allows free access to all terminals as in a general NodeB, but the CSG method can access only specific terminals allowed to access in advance. Accordingly, the present invention is to propose a subscriber management method based on OSG.

Various methods have been proposed as a network interface structure for accommodating an indoor base station [Home (e) NodeB]. For example, it connects to RNC / MME of mobile communication network through Secure Gateway through high speed internet in general home, and it moves through device called Concentrator (node that accommodates multiple Home (e) NodeB) that performs RNC function. Various structures are being considered, such as a structure for connecting to an SGSN / MME of a communication network and a structure for connecting to an IMS (IP Multimedia System) network through a SIP gateway. 2 is a view of minimizing modification of an existing network (3G network), and schematically illustrates a structure of accessing a mobile communication network through an ISP (Internet Service Provider) network in a general home using a high-speed Internet service. .

Referring to FIG. 2, an example of a structure for connection between an indoor base station [Home (e) NodeB] and a mobile communication network node is as follows.

The indoor base station [Home (e) NodeB] 20 is about the same size as a DSL router or a cable modem, and means an extremely small base station compared to an outdoor base station. The frequency used is a licensed frequency band allocated to a mobile operator, and can operate in an unlicensed frequency band. The output voltage is usually about 10-100mW, covering an area of 50-100m radius. In addition, the indoor base station 20 is a base station with minimum software and hardware capability compared to an outdoor base station, and can accommodate up to 10 users simultaneously, and can be directly installed by a network operator or a user. Do. In addition, the indoor base station 20 stores subscriber information, location information, authentication information, and the like, and can update the information or provide it to other indoor base stations. The connection with the mobile communication core network may be connected to a separate communication network connecting the indoor base station 20 or through a high-speed internet network installed indoors. For example, it may be connected via a digital subscriber line (DSL) 30.

The indoor base station [Home (e) NodeB] 20 of each home uses an IP-based standardized 3GPP Iub interface to communicate with the RNC (Secure Gateway 40) between the Internet network (for example, ADSL) and the mobile communication network. Base station controller) 60 / MME (node accommodating SGSN and GGSN functions in an EPS system) 50, and the Iub signaling message is tunneled to the Secure gateway 40 through an IP encapsulation scheme. That is, the structure of FIG. 2 is a method in which the Iub protocol is encapsulated in IP and connected. Network Security is covered in the IP Security (IP Sec) protocol.

This structure requires the RNC 60 to accommodate numerous indoor base stations 20.

Although not shown in the figure, in order to solve the problem that the RNC 60 has to accommodate a large number of indoor base stations 20, a device called a Concentrator, which performs the function of the RNC, is connected to a plurality of indoor base stations 20. It can be connected to the SGSN 70 and the MME 50 of the mobile communication core network.

In addition, although not shown in the drawing, the indoor base station 20 serves as a UMA client, the RNC function is provided by a UMA Network Controller (UNC), and the UNC is a core network node SGSN 70 and an MME 50. Or the like. In addition, based on SIP / IMS, the indoor base station 20 may be equipped with the SIP protocol, and the indoor base station 20 may be connected to the 3GPP IMS-based network through the SIP gateway. It should be noted that the present invention is not limited to the structures for the connection between the indoor base station [Home (e) NodeB] 20 and the mobile communication network node.

Using the indoor base station 20 having such a configuration, it will be described the subscriber (group) management process through the Open Subscriber Group (OSG) management method.

An indoor base station [Home (e) NodeB] operator (may or may not be one of the subscriber groups) may register / delete group subscriber information. That is, the operator can arbitrarily register / delete multiple subscribers to a subscriber group (eg, a family member in the case of a normal home). At this time, International Mobile Subscriber Identity (IMSI) information and indoor base station ID are used as information for identifying each subscriber (group subscriber information). IMSI is a unique 6-15 digit (15 digits in Korea) identification number assigned to a mobile terminal when subscribing to a mobile communication service. Information consisting of mobile country, mobile network, mobile subscriber identification number and national mobile subscriber identification number. In this case, the unique base station ID is assigned to every mobile subscriber, and the indoor base station ID is unique base station ID assigned to each indoor base station [Home (e) NodeB] to which specific subscribers belong. The IMSI information and the indoor base station ID are used as information of a paging message for performing an attach on a home subscriber or visiting subscribers entering the control area of a specific indoor base station 20.

A detailed configuration of the indoor base station 20 will be described with reference to FIG. 3. The indoor base station (Home (e) NodeB) 20, the information of the subscriber using the service through the indoor base station 20, whether the home or visiting subscriber of the subscriber (that is, the terminal 10 is a home indoor base station [Indicate whether the subscriber is originally assigned to the Home (e) NodeB] or the subscriber assigned to the indoor base station], the location information of the home subscriber and the indoor base station information of the visiting subscriber (that is, managing the visiting subscriber). Location information for the indoor base station] and a paging message to the home or visiting subscriber terminal 10 based on the information, and the group subscriber information storage unit 21 operable to store the information, and receives a response message thereto And a paging message transmission / reception unit 22 operable to receive a registration request message of the visited subscriber when the visited subscriber moves to the control area of the indoor base station 20, and the position of the home subscriber. Information about an indoor base station that manages visiting subscribers through a mobile telecommunication core network, including RNC 60, SGSN 70, HLR 80, etc., when maintaining or changing information and receiving registration request messages of visiting subscribers. It includes a network manager 23 that operates to obtain.

Here, the subscriber's information uses International Mobile Subscriber Identity (IMSI) information and indoor base station ID information as at least one subscriber information (home, visited subscriber information or home, visited subscriber group information), and uses an indoor base station operator. Can be registered or deleted arbitrarily.

In particular, the network manager 23 receives a response message for the paging message from the home subscriber station 10 existing in the control area of the home indoor base station 20 ('home, visited subscriber (home subscriber)'). If not (that is, confirm the movement of the location of the home subscriber), the terminal 10 transmits a registration request message to the moving base station base station. However, when a response message to the paging message is received from the home subscriber station 10 existing in the control area of the home indoor base station 20 ('home, visited subscriber (home subscriber)'), the location information of the home subscriber is received. Keep it without updating. [See Fig. 5 below] .

In addition, the network manager 23 receives a response message to the paging message from the visited subscriber station 10 existing in the control area of the home indoor base station 20 ('home, visited subscriber (visiting subscriber)'). Then, the mobile station performs a procedure of acquiring indoor base station information managing the visited subscriber station 10 in association with the core network.

4 shows an example of the group subscriber information DB managed by the indoor base station 20.

The group subscriber information storage unit 21 includes at least IMSI information of the home subscriber, whether it is a home or visiting subscriber, location information of the home subscriber, and indoor base station information of the visiting subscriber. In FIG. 4, whether the subscriber is a home or a visiting subscriber indicates whether the subscriber is originally assigned to a home indoor base station (Home (e) NodeB) or a subscriber assigned to another indoor base station. The location information of the home subscriber indicates the location information on which indoor base station the subscriber stored in the group subscriber information storage of the home indoor base station is currently located in the control area of the indoor base station. The indoor base station information of the visiting subscriber manages the visiting subscriber. The location information of the indoor base station is shown. In FIG. 4, "IMSI-1 to IMSI-5" are subscribers in the control area controlled by the home indoor base station and are unique in the group subscriber information DB. In addition, "IMSI-1 and IMSI-2" are home subscribers, which are currently located in the control area of the home indoor base station, and can register and service the home indoor base station. "IMSI-3" is a home subscriber, but is a subscriber located in the control area of the other indoor base station. The authentication and location information of the home indoor base station is required for registration and service in the indoor base station. "IMSI-4 and IMSI-5" are subscribers of the indoor base station and can register and service only through the corresponding indoor base station. Information about an indoor base station in which a specific subscriber is registered can be confirmed through a mobile communication core network including an RNC 60, an SGSN 70, an HLR 80, and the like.

5 illustrates a signal flow when a subscriber moves from a home indoor base station control area to a control area of another indoor base station according to an embodiment of the present invention.

Referring to FIG. 5, the basic functions for realizing the present invention are described. The home subscriber station 10 leaves the control area of the home indoor base station 20 to which the home subscriber station 10 belongs to the control area of the other indoor base station 20 ′. Check that it has entered (401). The method for confirming the movement to the other indoor base station 20` may be confirmed by whether the home indoor base station 20 receives a response message to the paging message of the home indoor base station 20. In addition to the method of managing the home subscriber station 10 through the paging message of the home indoor base station 20, the method of confirming whether the home subscriber station 10 has moved into the control area of the indoor base station 20 ′ is checked. The home subscriber station 10 indicates that the ID or area ID of the indoor base station has been changed through a broadcasting message (including an indoor base station ID or area ID for identifying an indoor base station) of the content base station 20`. By confirming, the method of confirming that the home subscriber station 10 moves to the control area of the indoor base station 20` may be used. When the home subscriber station 10 moves to the control area of the indoor base station 20`, the home subscriber station 10 transmits a registration request message to the indoor base station 20` (402). The attachment type of the registration request message is "indoor base station registration (Home (e) NodeB Attach)". Upon receiving the registration request message, the indoor base station 20` checks the IMSI from the subscriber information DB managed by the terminal 10 as a subscriber belonging to the home indoor base station 20. The other indoor base station 20` transmits a registration request of the terminal 10 to the SGSN 70 including its indoor base station ID information (403). SGSN 70 obtains information about home indoor base station 20 from HLR 80 managing home indoor base station 20 (404,405). When the home indoor base station 20 receives a location update message including the ID information of the other indoor base station 20` (406), the corresponding terminal 10 transmits to the home indoor base station 20. If the terminal does not belong to reject the location information update request (reject), and also the registration (attach) procedure of the terminal (10). On the other hand, if the terminal 10 is a terminal belonging to the home indoor base station 20, the indoor indoor base station 20 transmits a location update update (Location Update Ack) message to the SGSN (70). The terminal 10 updates the location information of the other indoor base station 20` where it is currently located to the home indoor base station 20 managing the terminal 10 and the SGSN 70 (MME in the case of 4G). The authentication procedure is performed (408). When the SGSN 70 completes the authentication procedure of the terminal 10, the SGSN 70 approves the registration request of the terminal 10 (409), and transmits a location information update completion message to the home indoor base station 20 (410). . When the home indoor station 20 receives the Location Update Complete message from the SGSN 70 (410), it recognizes that the home subscriber exists in the control area of the other indoor base station 20`. Then, the location information of the terminal 10 is updated (411).

FIG. 6 is a diagram illustrating a signal flow of a mobile terminated (MT) service when a home subscriber exists in a control area of another indoor base station according to an embodiment of the present invention.

When the SGSN 70 receives an MT service request for a specific indoor base station subscriber station 10 (501), if the SGSN 70 does not know information about the indoor base station of the subscriber, the SGSN 70 attaches to the attach request. The indoor base station information (ie, indoor base station ID) including the information of the corresponding subscriber station 10 is obtained from the HLR 80 in the same manner as that for the processing (502, 503). In general, since the attach process is performed first, if the indoor base station information of the corresponding subscriber station 10 is known to the SGSN 70, the indoor base station information acquisition procedures 502 and 503 through the HLR 80 are performed. Do not perform. The SGSN 70 transmits a terminal location information request message including the ID of the subscriber station 10 to the home indoor base station 20 of the subscriber station 10 (504), and sends a message. The received home indoor base station 20 sends a terminal location information acknowledgment message including information of the other indoor base station 20` currently controlling the corresponding subscriber station 10 to the SGSN 70. Transmit (505). SGSN 70 performs the paging procedure to the other indoor base station 20` controlling the subscriber station 10 (506, 507) and the subsequent procedure is the same as described in the 3GPP TS23.060 standard document The authentication procedure 508 and the MT service will be provided (509). In the above, if the terminal 10 to which the terminal location information request message is transmitted is not a terminal belonging to the home indoor base station 20, the terminal location information request is rejected and the MT in the SGSN 70 is rejected. The service processing request is denied.

7 is a diagram illustrating a signal flow of a MO (Mobile Orignated) service when a home subscriber exists in a control area of an indoor base station according to an embodiment of the present invention.

When the subscriber wants a specific service such as packet service or SMS (Short Message Service) origination, the subscriber currently manages the subscriber station 10 for connection between the subscriber station 10 and the SGSN 70. A MO Service Request message including the indoor base station 20 'ID is transmitted to the SGSN 70 (601). In the SGSN 70, indoor base station information (for example, indoor base station ID) including information of an originating subscriber from HLR 80 is processed in the same manner as attachment request processing when a MO service is requested for a specific subscriber. Obtained (602, 603). If the SGSN 70 already knows the information of the indoor base station that contains the calling subscriber information, then this procedure 602, 603 is not performed. The SGSN 70 transmits a terminal location information request message to the home indoor base station 20 (604), and the home indoor base station 20 receiving the message has the corresponding terminal 10 belonging to the home indoor base station 20. In the case of the terminal, the terminal 10 transmits a terminal information response message (MS Information Response) to confirm that the terminal belongs to the indoor indoor base station 20 (605). The SGSN 70 confirms that the subscriber station 10 requesting the MO service is a normal subscriber belonging to the home indoor base station 20 and performs the MO service procedure. Subsequently, the authentication process is performed in the same manner as described in the 3rd Generation Partnership Project (3GPP) TS23.060 standard document (606). If authentication is successful, the SGSN 70 approves the service to the subscriber station 10 requesting the MO service (607) and provides the MO service to the corresponding terminal 10 (608). However, if the subscriber station 10 requesting the MO service is not a subscriber belonging to the home indoor base station 20, the subscriber location information request is rejected and the MO service processing request from the SGSN 70 is rejected.

While the above methods have been described through specific embodiments, the methods may also be implemented as computer readable code on a computer readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the above embodiments can be easily deduced by programmers of the present invention.

In addition, while the present invention has been described in connection with some embodiments, it is to be understood that various modifications and changes can be made without departing from the spirit and scope of the invention as will be understood by those skilled in the art. You will need to know It is also contemplated that such variations and modifications are within the scope of the claims appended hereto.

1 is a flowchart illustrating a terminal registration process using a conventional outdoor base station.

2 is a schematic diagram illustrating a network interface for accommodating indoor base station according to an embodiment of the present invention;

3 is a block diagram showing the configuration of an indoor base station according to an embodiment of the present invention;

4 is an explanatory diagram showing a group subscriber information DB of an indoor base station according to an embodiment of the present invention;

5 is a flowchart illustrating a signal flow when a subscriber moves from a home indoor base station control area to a control area of another indoor base station according to an embodiment of the present invention.

6 is a flowchart illustrating a signal flow of a mobile terminated (MT) service when a home subscriber exists in a control area of an indoor base station according to an embodiment of the present invention.

7 is a flowchart illustrating a signal flow of a MO (Mobile Orignated) service when a home subscriber exists in a control area of an indoor base station according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

10: UE (UE) 20: indoor base station [Home (e) NodeB]

30: Digital Subscriber Line (DSL) 40: Secure Gateway

50: MME (Mobility Management Entity) 60: RNC (Radio Network Controller)

70: Serving GPRS Support Node (SGSN)

Claims (14)

As an indoor base station of a mobile communication system, A group subscriber information storage unit operable to store information of a subscriber using a service through the indoor base station, whether the subscriber is a home or visiting subscriber, location information of a home subscriber, and indoor base station information of a visiting subscriber; A paging message transmitting and receiving unit operable to transmit a paging message to a terminal of the home or visiting subscriber based on the information, receive a response message, and receive a registration request message of the visiting subscriber; And And a network management unit operable to maintain or change location information of the home subscriber and to obtain indoor base station information of the visited subscriber based on the registration request message. The method of claim 1, The subscriber's information, The indoor base station as at least one subscriber information, which is International Mobile Subscriber Identity (IMSI) information and indoor base station ID information, which can be arbitrarily registered or deleted by an indoor base station operator. The method according to claim 1 or 2, Whether the subscriber is a home or visiting subscriber, An indoor base station indicating whether a subscriber station is a subscriber originally assigned to the indoor base station or a subscriber assigned to another indoor base station. The method of claim 3, The network management unit, And upon receipt of the response message from the home subscriber, maintains location information of the home subscriber. The method of claim 3, The network management unit, And change the location information of the home subscriber if not receiving the response message from the home subscriber. The method of claim 3, The network management unit, And upon receipt of the registration request message from the visited subscriber, obtaining indoor base station information of the visited subscriber in association with a mobile communication core network. As a subscriber management method of a mobile communication system, a) registering information of a subscriber who wants to use a service through an indoor base station, whether the subscriber is a home or visiting subscriber, location information of a home subscriber, and indoor base station information of a visiting subscriber; b) sending a paging message to the terminal of the home or visiting subscriber based on the information; c) receiving a response message to the paging message; d) maintaining or changing location information of the home subscriber according to whether the response message is received; e) receiving a registration request message of the visited subscriber; And f) acquiring indoor base station information of the visited subscriber based on the registration request message. The method of claim 7, wherein The subscriber's information, A subscriber management method of a mobile communication system, which is at least one subscriber information, which is International Mobile Subscriber Identity (IMSI) information and indoor base station ID information, which can be arbitrarily registered or deleted by an indoor base station operator. 9. The method according to claim 7 or 8, Whether the subscriber is a home or visiting subscriber, A subscriber management method of a mobile communication system, which indicates whether a subscriber station is a subscriber originally assigned to the indoor base station or a subscriber assigned to another indoor base station. 10. The method of claim 9, Step d), And maintaining location information of the home subscriber when receiving the response message from the home subscriber. 10. The method of claim 9, Step d), Changing the location information of the home subscriber if the response message is not received from the home subscriber. 10. The method of claim 9, Step f), And when the registration request message is received from the visited subscriber, acquiring indoor base station information of the visited subscriber in association with a mobile communication core network. In the service providing method of a mobile communication system, Receiving an incoming service request for a specific indoor base station subscriber station; Transmitting a location information request message to a home indoor base station of the subscriber station; Transmitting, by the home indoor base station receiving the terminal location information request message, a terminal location information acknowledgment message including information of another indoor base station controlling the subscriber station; Performing a paging procedure with the other indoor base station; Performing an authentication procedure of the subscriber station; And The service providing method of the mobile communication system comprising the step of providing the incoming service. In the service providing method of a mobile communication system, Transmitting an originating service request message including an indoor base station ID managing a specific subscriber station; Transmitting a terminal location information request message to a home indoor base station including the subscriber terminal information; If the subscriber station is a terminal belonging to the home indoor base station, transmitting the terminal location information response message confirming that the subscriber terminal belongs to the home indoor base station; Performing an authentication procedure of the subscriber station; And The service providing method of a mobile communication system comprising the step of providing the outgoing service.

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