KR20120066346A - Method for acquiring terminal information - Google Patents

Abstract

PURPOSE: A method for obtaining information of idle terminal is provided to store obtained terminal information or notice the terminal information to a specific user when an unregistered home user accesses the cell region of a specific femto base station. CONSTITUTION: CSG(Closed Subscriber Group) access mode information within in a received message is changed into an OSG(Opened Subscriber Group) mode and transmitted(401). A terminal obtains the CSG information and paging group or location area information(402). The terminal compares the CSG information with the gaping group information or the location area information(403). The terminal requests LAU(Location Area Update) or TAU(Tracking Area Update) to the femto base station(404).

Description

How to obtain terminal information {METHOD FOR ACQUIRING TERMINAL INFORMATION}

The present invention relates to a method for obtaining information (eg, terminal ID, access time, etc.) of an idle terminal in a specific micro base station of a wireless communication system.

Recently, the use of mobile phones and mobile data in homes is continuously increasing, and according to this trend, a method of providing a wireless communication service by installing a micro base station indoors to access a wireless communication core network through an indoor broadband network is proposed. It is becoming. In particular, in the next generation network system, a method of deploying multiple small cells (femtocells) has been proposed as an alternative to meet the demand for high data rates and to provide a variety of services. The micro base station that manages such a small cell is called an indoor base station or a femto base station, or 3GPP as Home-eNB, HeNB, or the like. By reducing the size of the cell to service the indoor environment, the efficiency of the next-generation network system using the high frequency band can be improved, and the use of multiple small cells can increase the frequency reuse frequency. Do. In addition, the present invention can improve the channel deterioration problem due to the attenuation of radio waves, which is caused when a single base station covers the entire cell area, and the inability to service shadow users. Has this advantage.

Such a small base station can be used for security purposes by obtaining terminal information coming into the cell area that it manages. In order to do so, when a terminal enters within the cell coverage of the small base station, it is determined exactly which terminal entered and entered the terminal. Information should be available. The conventional base station has a very limited way of knowing the information of the terminal, the reason is that once the conventional macro cell base station, the service area is so large that it is difficult to distinguish the terminal entering and exiting a specific area of the same size indoors it's difficult. In addition, even if the small base station that manages the small cell, if the terminal is not in the idle state (idle), if the terminal does not register the location, because the terminal is not set up connection with the surrounding base station for the idle terminal Information (terminal ID or location information, access time) was not known at all.

An object of the present invention is to provide a terminal information acquisition method that can obtain information (terminal ID, access time, etc.) of the terminal in the idle state (idle) in a specific micro base station of the wireless communication system.

Another object of the present invention is to store the terminal information obtained from the terminal when the terminal is not a home user (home user) registered in the small base station enters the cell area of the small base station, or specified by SMS or E-mail, etc. To inform them in real time.

According to an aspect of the present invention, there is disclosed a terminal information acquisition method capable of obtaining information (terminal ID, access time, etc.) of an idle terminal in a specific micro base station of a wireless communication system. According to an embodiment of the present invention, the first base station apparatus broadcasts virtual location registration region information, not its own location registration region information, so that an idle terminal that has moved to a cell region of the first base station apparatus is broadcasted. The virtual location registration area information included in the message is compared with the location registration area information of the previous second base station apparatus to request the location registration to the first base station apparatus due to the difference in the location registration region information. Then, the first base station apparatus obtains information of the terminal requesting location registration. According to another embodiment, when the location management server registers the location registration area information of the first base station apparatus, and the terminal in the idle state moving to the cell area of the first base station apparatus requests the location registration through the first base station apparatus, By checking whether or not the first base station apparatus is registered, information on the terminal requesting location registration is obtained according to the verification result. Subsequently, when the terminal in the idle state moving from the cell area of the first base station apparatus to the cell area of the second base station apparatus requests a location registration through the second base station apparatus, the location management server updates and manages information of the terminal.

According to the present invention, when a terminal in any idle state other than an authorized user (for example, a home user) is installed in a general user's home or a device supporting a wireless interface installed in a place where security is required, an area of the base station apparatus, that is, a user's home or security By saving the terminal information about entering and leaving the zone, or by notifying the information in real time by SMS or E-mail, it can provide a great advantage in pre-blocking or post-processing of security problems that may occur. .

1 illustrates the configuration of an exemplary wireless communication network in which the present invention may be practiced.
2 is a diagram illustrating a concept of a tracking area including a plurality of micro base stations according to an embodiment of the present invention.
3 is a view showing a location registration process for obtaining terminal information according to an embodiment of the present invention.
4 is a diagram illustrating a method for obtaining terminal information according to the first embodiment of the present invention.
5 is a diagram illustrating a method of obtaining terminal information according to a second embodiment of the present invention.

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.

1 is a diagram illustrating a configuration of an exemplary wireless communication network in which the present invention can be implemented.

In one embodiment, the wireless communication network includes, for example, Global System for Mobile communication (GSM), 2G wireless communication network such as CDMA, LTE network, wireless Internet such as WiFi, Wireless Broadband Internet (WiBro) and World Interoperability for Microwave Access. Wireless network that supports packet transmission (e.g., 3G wireless network such as WCDMA or CDMA2000, 3.5G wireless network such as High Speed Downlink Packet Access (HSDPA) or High Speed Uplink Packet Access (HSUPA), or 4G wireless communication network, etc. to be developed in the future) and macro base station (macro-eNB), micro base station (Home-eNB) and any other wireless communication network including a UE (UE) as a component, but is not limited thereto. no. Hereinafter, a description will be given of E-UTRAN, which is a wireless access network of LTE.

As shown in FIG. 1, a wireless communication network may be composed of one or more network cells, and different types of network cells may be mixed in the wireless communication network. A wireless communication network is a small base station (11-15, 21-23, 31-33) that manages small network cells (hereinafter referred to as 'femtocells'), such as indoors, and a wide range of cells (hereinafter, referred to as 'macrocells'). And a macro base station (macro-eNB or eNB) 10, 20, 30, a terminal (UE) 40, a self organizing & optimizing network (SON) server 50, and an MME 60. have. The number of components shown in FIG. 1 is exemplary, and the number of components of the wireless communication network to which the present invention can be implemented is not limited to the number shown in the drawings.

The macro base stations 10, 20, and 30 may be used in, for example, LTE, WiFi, WiBro, WiMax, WCDMA, CDMA, UMTS, GSM networks, for example, cells having a radius of about 1 km. It may include a feature of the macro cell base station for managing, but is not limited thereto.

The small base stations 11-15, 21-23, 31-33 can be used, for example, in LTE networks, WiFi networks, WiBro networks, WiMax networks, WCDMA networks, CDMA networks, UMTS networks, GSM networks, and the like. It may include features of an indoor base station or a femto base station for managing a cell having a radius of about m to several tens of meters, but is not limited thereto.

The micro base stations 11 to 15, 21 to 23, 31 to 33 and the macro base stations 10, 20 and 30 may each independently have connectivity of the core network.

The UE 40 is used in a 2G wireless communication network such as a GSM network, a CDMA network, a wireless Internet network such as an LTE network, a WiFi network, a mobile Internet network such as a WiBro network and a WiMax network, or a wireless communication network supporting packet transmission. It may include features of the wireless mobile terminal, but is not limited thereto.

The SON server 50 may include any server that functions to perform outdoor / miniature base station installation and optimization and to provide basic parameters or data required for each base station.

The MME 60 may include any entity used to manage mobility of the terminal 40 and the like.

In one embodiment, one network management device may perform the functions of both the SON server 50 and the MME 60, the SON server 50 and the MME 60 is one or more macro base stations (10, 20) 30 and one or more micro base stations 11-15, 21-23, 31-33.

In the wireless communication network, a macro cell and a femto cell are assumed to be mixed, but the network cell may be configured only by the macro cell or the femto cell.

In operation, access to the macro base stations 10, 20, and 30 is normally allowed to all terminals, but access to the micro base stations 11 to 15, 21 to 23, 31 to 33 is restricted to specific terminals (subscribers). There is an operation function that can be done. This is called a connection mode or an operation mode, and the connection modes of the small base stations 11 to 15, 21 to 23, 31 to 33 are classified according to which terminal provides a service. It is divided into closed access mode, open access mode, and hybrid access mode, and closed access mode (Closed Access mode or CSG Closed mode) allows access only to specific subscribers, and is open access mode (Open Access mode or CSG Open mode). Is a mode that can be accessed by any subscriber without access condition, and hybrid can be considered as a compromise.

Specifically, the micro base stations 11 to 15, 21 to 23, 31 to 33 may broadcast system information block type 1 (SIB 1), which is system information, in a femtocell area managed by the base station (11 to 15, 21 to 23, 31 to 33). A Closed Subscriber Group indicator is included to indicate whether access to the femtocell is restricted.

When a small base station is operated in a closed access mode (closed access mode or a CSG closed mode) such that only a specific subscriber can access and be served by a femtocell that it manages, the small base station may 'true' the CSG indicator in the SIB. After setting to the value of broadcast to broadcast to inform the terminal in the cell. When operating in the open access mode (Open Access mode or CSG Open mode), broadcast after setting the CSG indicator to the value of 'false (false).

When the terminal 40 moves into the femtocell managed by the small base station, after receiving the SIB 1 message from the small base station, after confirming that the CSG indicator is 'true' in the message, the terminal 40 is accessible to itself. When it is confirmed that the corresponding small base station is included in the white list which is a list of the small base stations, the small base station can be accessed.

For the micro base station operating in the closed access mode, only the user (home user) defined in the home user table managed by the micro base station can be connected to and provided with the micro base station.

In addition, for the small base station operated in the Open Access mode, not only the user defined in the home user table but also a non-home user can access and provide the service to the small base station. You can get services that are more preferential than -home user. In detail, the small base stations 11 to 15, 21 to 23, 31 to 33 operated in the CSG closed mode may access only the terminal 40 authorized for connection, for example, a terminal of a user registered as a small base station service subscriber. Allow. The terminal 40 has a list of the smallest base stations called the white list, and can access only the smallest base stations belonging to the white list, and access to the smallest base stations is not allowed.

The terminal 40 may know whether access to the corresponding base station is restricted based on the CSG indicator of the SIB 1 broadcasted by the small base stations 11 to 15, 21 to 23, 31 to 33. In addition, as the identifier for identifying the small base station cell by the terminal 40, a physical layer cell identifier (PCI), which is a cell classification factor in the physical layer, and a global cell identifier, which is a unique cell discrimination factor in a wireless communication network, are identified. (GCI: Global Cell Identity).

Hereinafter, paging group or location area (or tracking area) information is area information (ie location registration area information) for location registration.

According to the first embodiment, the macro base station 10 and the small base stations 11 to 15 may be constituted by one paging group or location area (or tracking area) (for example, TA # 1) (see FIG. 2). According to the second embodiment, each may be composed of one paging group or location area (or tracking area). This management policy may vary depending on the service provider. According to the first embodiment, the macro base station 20 and the micro base stations 21 to 23, and the macro base station 30 and the micro base stations 31 to 33 each have one paging group or location area (or tracking area). It may be configured as (for example TA # 2, TA # 3).

As shown in FIG. 2, according to the first embodiment, the terminal 40 existing (position C) in the cell area 203 of the micro base station in the TA # 2 area 200 is the TA # 2 area 200. Do not perform Location Area Update (LAU) or Tracking Area Update (TAU) at the time of movement.

However, when the terminal 40 moves (location B) to the cell area 103 of the micro base station in the TA # 1 area 100, the paging group or location area (or tracking area) is changed (TA # 2 → TA). # 1), the terminal 40 performs LAU or TAU. Thereafter, the terminal 40 moves in the TA # 1 area 100, that is, when moving from the cell area 103 of the micro base station to the cell area 101 (from position B to location A), the same paging group or location. Do not perform LAU or TAU because it is in an area (or tracking area).

Hereinafter, assuming that the cell area 101 of the micro base station in the TA # 1 area 100 is a security area, information of the terminal 40 entering / exiting in the cell area 101 of the micro base station (for example, a terminal ID, an access time) The process of acquiring, etc. will be described in detail.

In the terminal information acquisition function of the present invention, a home user (which can be a large number of home users) of a micro base station managing the cell region 101 may be connected to the micro base station in real time. When the terminal information acquisition function is turned on, the terminal information of the home user or the terminal information (terminal ID, access time, etc.) of the non-home user is obtained and stored, or SMS, E-mail, telephone, etc. to a specific person designated in advance It can also inform the home user or non-home user of entry / exit. At this time, the terminal information of the non-home user may also be informed. Alternatively, the video may be transmitted together with the CCTV camera.

The terminal information acquisition function may be disabled when at least one of the home users is connected in the cell area 101, and may be enabled when there is no home user.

First, a case where a plurality of adjacent base station apparatuses constitute one paging group or location area (or tracking area) according to the first embodiment will be described.

As shown in FIG. 3, the terminal information acquisition function of the present invention is the terminal 40 in the idle state (position C) existing in the cell area 203 of the base station apparatus in the TA # 2 area 200. When the mobile station moves to the cell area 103 of the base station apparatus in the TA # 1 area 100 (from position C to position B), the terminal 40 in the idle state performs LAU or TAU. Subsequently, when the terminal 40 in the idle state continues to move and moves from the cell region 103 of the base station apparatus to the cell region 101 which is the security region of the micro base station apparatus (position B → position A), the cell region 101 becomes Even if the mobile station belongs to the same paging group or location area (or tracking area) as the cell area 103, the micro base station apparatus that manages the cell area 101 forces the terminal 40 to request a LAU or TAU (301). In this case, the terminal 40 obtains information on the terminal 40 and stores the terminal information, or informs a predetermined person through SMS, E-mail, or telephone.

Here, the terminal 40 in the idle state may be a terminal of a non-home user. In one embodiment, the micro base station apparatus managing the cell area 101, which is a security area, first checks whether a home user is connected, and if at least one of the home users is not connected to the cell area 101, the terminal information. The connection function can be enabled and, if connected, the terminal information acquisition function can be disabled. In another exemplary embodiment, the micro base station apparatus managing the cell area 101 may perform the terminal information acquisition function without distinguishing the terminal of the home user or the non-home user. In addition, the micro base station apparatus that manages the cell area 101 stores the acquired terminal information (terminal ID, access time, etc.), or sends a home user or non- It can also notify the home user of entry / exit in real time.

4 is a diagram illustrating a method of obtaining terminal information according to the first embodiment of the present invention.

The micro base station apparatus of the present invention always transmits information on a system by broadcasting through an SIB 1 message or a paging message, such as a macro base station, and periodically dummy paging group or location area ( Or tracking area) information. If the micro base station apparatus is operating in the closed access mode, the terminal 40 does not respond even if the paging group or location area (or tracking area) information is different when the terminal 40 is not the home user of the base station. Therefore, the CSG Access mode information is transmitted to the OSG mode in the broadcast message (401).

The dummy paging group or location area (or tracking area) information is different from information of the actual TA # 1 area 100 to which the micro base station apparatus belongs (for example, TA # 0).

The terminal 40 receives the broadcasting message from the compact base station apparatus to obtain CSG information and paging group or location area (or tracking area) information (402).

The terminal 40 checks whether the CSG information (CSG Open or Open Access mode) is accessible to the micro base station apparatus, and knows paging group or location area (or tracking area) information (for example, TA # 1) that is already known. (403).

As a result of the comparison, since the currently received dummy paging group or location area (or tracking area) information (for example, TA # 0) is different from the information that the terminal 40 has (for example, TA # 1), the terminal 40 is a very small base station. Request a LAU or TAU to the device (404).

After receiving the LAU or TAU request from the terminal 40, the micro base station apparatus determines whether the corresponding terminal 40 is a registered home user, and if the terminal 40 is not a home user, does not send the corresponding message to the gateway or the management server. Only the ID, entry time, etc.) can be stored in the micro base station apparatus (405) or, if possible, a predetermined person can be notified in real time of the entry of a non-home user through a network node (gateway, etc.) via SMS, etc. 406). At this time, the terminal information of the terminal 40 may be transmitted together. However, in the case of a registered home user, the micro base station apparatus does not send the corresponding message to the gateway or the management server and does not store terminal information (terminal ID, entry time, etc.).

Subsequently, the miniature base station apparatus sets the LAU or TAU failure in the response message for the LAU or TAU request of the terminal 40 as a cause and transmits the result to the terminal 40. In this case, as a cause of failure, the terminal 40 is configured to attempt location registration with a new base station apparatus (for example, "Not Authorized for this CSG" in case of LTE).

The micro base station apparatus transmits normal broadcasting message (CSG information and normal paging group or location area (or tracking area) information (for example, TA # 1)) to the terminal 40 so that it can operate normally. do.

After receiving the normal broadcasting message (CSG information and normal paging group information), the terminal 40 attempts location registration (409). At this time, since the paging group or location area (or tracking area) information (for example, TA # 1) currently received is the same as the information (for example, TA # 1) that the terminal 40 has, the terminal 40 selects LAU or TAU. Do not perform.

The small base station apparatus transmits dummy paging group or location area (or tracking area) information, CSG open mode, or open access mode to request a forced LAU or TAU from the terminal 40, by default to 5 minutes. The operator or the base station equipment owner or the home user can be set up sufficiently and should be sent at sufficient time intervals according to the situation of the security area.

The terminal information acquisition function may be usefully used by a function that automatically enables the corresponding function or manually turns on / off when no user is connected at night or home user in a general user's house.

Meanwhile, according to the second embodiment, a case where one base station device configures one paging group or location area (or tracking area) will be described. This is the case where all macro base stations and micro base stations have one paging group or location area (or tracking area), respectively. Since all base station apparatuses each have one paging group or location area (or tracking area), the idle terminal 40 always transmits an LAU or TAU request when moving to another base station apparatus. Report to location management server (ie gateway or management server) of network. Since the upper location management server has already registered the paging group number or LA (or TA) information of the base station apparatus 1 located in the area where security is required, if the LAU or TAU request is received from the base station apparatus 1, or stores the terminal information, In addition, it is possible to notify the designated person in real time the entry / exit of the home user or the non-home user through SMS, E-mail or telephone.

5 is a diagram illustrating a method of obtaining terminal information according to the second embodiment of the present invention.

The base station apparatus 1 registers its paging group or location area (or tracking area) information with the location management server (501).

The base station apparatus 1 transmits a normal broadcasting message (CSG information and normal paging group or location area (or tracking area) information (for example, TA # 1)) (502).

For example, the terminal 40 having the paging group or location area (or tracking area) information (for example, TA # 2) moves to the service area of the base station apparatus 1, receives a broadcasting message from the base station apparatus 1, and receives the CSG information and the paging group. Alternatively, location area (or tracking area) information (eg, TA # 1) is obtained (503).

The terminal 40 confirms that the CSG information (CSG Open or OSG mode) can be connected and compares it with the paging group or location area (or tracking area) information (for example, TA # 2) that is already known (504). ).

As a result of the comparison, since the currently received paging group or location area (or tracking area) information (for example, TA # 1) is not the same as the information that the terminal 40 has (for example, TA # 2 of the base station apparatus 2), the terminal ( 40) requests the LAU or TAU to the base station apparatus 1 (505), the base station apparatus 1 to the location management server of the core network for the LAU or TAU request of the terminal 40 (terminal ID, paging group number, etc.) Send 506.

If the location management server requests the location registration request from the base station apparatus 1 (for example, TA # 1) that manages the security area (check based on the information registered in step 501) (507), the corresponding terminal 40 After storing the information (terminal ID, time of entry, etc.) (508), if possible, a specific person can be notified of the entry of a non-home user via SMS (eg, a gateway) in real time via SMS. There is (509).

The location management server transmits the LAU or TAU grant message to the base station apparatus 1 (510), and the base station apparatus 1 transmits the LAU or TAU grant message to the terminal 40 (511).

If the terminal 40 moves again, the terminal 40 transmits an LAU or TAU request message to the base station apparatus 3 based on the broadcasting message transmitted by the base station apparatus 3 (eg, TA # 3).

When the base station apparatus 3 receives the LAU or TAU message from the terminal 40, the base station apparatus 3 transmits terminal information (terminal ID, paging group number, etc.) to the location management server of the core network. Then, since the location management server requests the location registration of the terminal 40 that has passed through the base station apparatus 1 (for example, TA # 1) that manages the security zone, the location management server stores information (terminal ID, time of departure, etc.) of the corresponding terminal 40 ( Renewal and management), and if possible, notify a predetermined person in advance of an entry through SMS or the like in real time. In addition, the location management server transmits the LAU or TAU approval message to the base station apparatus 3, the base station apparatus 3 transmits the LAU or TAU approval message to the terminal 40.

Although the method has been described through specific embodiments, the method may also be embodied 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 the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and may be implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the above embodiments can be easily deduced by programmers of the present invention.

While the invention has been described in connection with some embodiments herein, it should be understood that various modifications and changes can be made without departing from the spirit and scope of the invention as would be understood by those skilled in the art. something to do. Also, such modifications and variations are intended to fall within the scope of the claims appended hereto.

10,20,30: Macro base station 11-15, 21-23, 31-33: Micro base station
40: terminal (UE) 50: SON server
60: MME

Claims (13)

As a terminal information acquisition method,
When the first base station apparatus broadcasts virtual location registration area information instead of its own location registration area information, a virtual location registration area carried in a broadcasting message by an idle terminal moved to the cell area of the first base station device. Comparing the information with the location registration area information of the previous second base station device to request the location registration to the first base station device due to the difference in the location registration area information; And
And obtaining, by the first base station apparatus, information of the terminal requesting location registration. The method of claim 1,
And the first and second base station apparatuses have the same location registration area information. The method of claim 2,
And transmitting, by the first base station apparatus, a location registration failure message to the terminal and inducing a normal operation by broadcasting its location registration area information. The method of claim 2,
When the first base station apparatus is a small base station operating in the closed subscriber group (CSG) closed mode, the CSG closed mode information is changed to CSG open mode or open subscriber group (OSG) mode information when the broadcasting message is transmitted. Terminal information acquisition method. The method of claim 2,
And transmitting, by the first base station apparatus, the obtained terminal information to a predetermined destination. The method of claim 2,
And the first base station apparatus does not transmit a location registration request of the terminal to a location management server. 7. The method according to any one of claims 1 to 6,
The obtained terminal information is a terminal ID and entry time information of a non-home user, not a home user, terminal information acquisition method. The method of claim 7, wherein
The first base station apparatus is a miniature base station that manages a cell area of an area where security is required. As a terminal information acquisition method,
Registering, by the location management server, location registration area information of the first base station apparatus;
Checking, by the location management server, whether or not the first base station device is registered when an idle terminal which has moved to a cell area of the first base station device requests a location registration through the first base station device;
Acquiring, by the location management server, information of the terminal requesting location registration according to the confirmation result; And
When the terminal in the idle state moving from the cell area of the first base station apparatus to the cell area of the second base station apparatus requests a location registration through the second base station apparatus, the location management server updates and manages information of the terminal. Steps to
Terminal information acquisition method comprising a. 10. The method of claim 9,
And the first and second base station apparatuses have different location registration area information. The method of claim 10,
And transmitting, by the first base station apparatus, information of the obtained terminal and information of the terminal to be updated and managed to a predetermined destination. 12. The method according to any one of claims 9 to 11,
The information of the terminal to be updated and managed, the terminal ID, entry and exit time information of the home user or non-home user, terminal information acquisition method. The method of claim 12,
The first base station apparatus is a miniature base station that manages a cell area of an area where security is required.

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