KR20150039401A - Method and apparatus for sending state information of wireless terminal - Google Patents

Abstract

Provided is a method for transmitting state information, including the steps of: transmitting an anytime modification (ATM) message based on a Regi message of a wireless terminal which is received from the wireless terminal to a home location register (HLR); storing a registration error response if the registration error response about the ATM message is received from the HLR or an integrated gateway (IGW); receiving a preset event of the wireless terminal; and transmitting the ATM message to the HLR based on the preset event.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and apparatus for transmitting status information of a wireless terminal,

The present invention relates to a method and apparatus for transmitting state information of a wireless terminal, and more particularly, to a method and apparatus for retransmitting state information when a predetermined condition is satisfied for state information recovery.

In recent years, as wireless terminals (UEs) such as smart pads, tablet PCs, and smart phones have been increasingly used, wireless terminals using data networks have been increasing in order to provide better services than 3G.

At this time, the method of registering the state information in the wireless terminal is performed by using the mobile station identification information. In this regard, Korean Patent Laid-Open Publication No. 2010-0047471 (published on May 10, 2010) discloses a method of automatically retrying location registration using mobile station identification information when location registration fails in a wireless terminal.

However, when the status information of the wireless terminal changes, it may inform its status information to the HLR. If the status information transmission of the wireless terminal fails in the abnormal situation such as IGW failure, the HLR and TAS state mismatch So that the normal call of the wireless terminal may not be possible.

Korean Patent Publication No. 2010-0047471 (published May 10, 2010) discloses "a method for processing when a location registration fails in a mobile terminal ".

In one embodiment of the present invention, when the transmission of the state information from the TAS to the HLR fails, the error response is stored as a flag, and the state change information of the wireless terminal is retransmitted on condition that a predetermined event occurs, Thereby preventing overload of the TAS and preventing re-transmission of unnecessary messages of the TAS. It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to an aspect of the present invention, there is provided an apparatus for transmitting an AnyTime Modification (ATM) message based on a Regi message received from a wireless terminal to a home location register (HLR) Storing a registration error response when receiving a registration error response for an ATM message from an HLR or an INTEGRATED GATEWAY (IGW); receiving a preset event of the wireless terminal; And retransmitting the message to the HLR.

According to any one of the above-mentioned objects of the present invention, unnecessary message retransmission of the TAS can be prevented by preventing the overload of the TAS by distributing the message retransmission time.

1 is a block diagram illustrating a data network system according to an embodiment of the present invention.
2 is a block diagram illustrating a state information transmission apparatus of a wireless terminal according to an exemplary embodiment of the present invention.
3 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the data network system of FIG. 1 according to an embodiment of the present invention.
FIG. 4 is a diagram illustrating a process of transmitting and receiving data between the respective components included in the data network system of FIG. 1 according to another embodiment of the present invention.
5 is a flowchart illustrating a method of transmitting status information according to an exemplary embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as "including" an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a data network system according to an embodiment of the present invention. 1, the data network system 1 includes a UE (User Equipment) 100, an Evolved Node B (eNB) 200, a Serving Gateway 300, an MME (Mobility Management Entity) 310, an HLR A Location Register 330, an IGW (Integrated Gateway) 350, a PDW Gateway 400, a CSCF (Call Session Control Function) 500, a TAS (Telephony Application Server) 600, a PCRF (Policy and Charging Rules Function) 700 A Subscriber Profile Repository 810, an Offline Charging System 820, an Online Charging System 830, and a PDN (Public Data Network) 900. However, since the data network system 1 of FIG. 1 is only one embodiment of the present invention, the present invention is not limited to FIG.

The UE 100 may be a user terminal. At this time, the UE 100 may be implemented as a terminal capable of accessing a remote server or a terminal. The UE 100 is a wireless communication device that is guaranteed to be portable and mobility and can be used for all types of wireless communication devices such as a smartphone, a smartpad, a tablet PC, And may include a handheld based wireless communication device.

The eNB 200 may be an LTE base station and may be a device that provides a wireless connection between the UE 100 and the LTE network. That is, the eNB 200 can connect between the SGW 300 and the UE 100 and manage the handover of the UE 100. At this time, the eNB 200 and the UE 100 can be connected wirelessly.

The SGW 300 may control the movement of the UE 100 between the 3GPP / E-UTRAN and perform an anchoring at the handover of the UE 100 of the eNB 200. [ For example, when the UE 100 is handed over from one eNB 200 to another eNB 200, handover of the UE 100 may occur over the SGW 300. [ Accordingly, the SGW 300 can operate as an anchor point in intra-LTE mobility.

The MME 310 can control the signal between the eNB 200 and the SGW 300, determine the routing, and authenticate the UE 100. At this time, the authentication protocol of the MME 310 may be EPS-AKA, and the key information for authenticating the UE 100 may be stored in the HLR 330. [ Accordingly, the MME 310 can receive the key information from the HLR 330 and perform authentication with respect to the UE 100. [ In addition, the MME 310 can manage the EPS bearer. In this case, the EPS bearer is a logical tunnel generated between the UE 100 and the PGW 400 (UE 100-eNB 200-SGW 300 -PGW 400) And the MME 310 can control creation, modification, and release of the tunnel. In addition, only one EPS bearer is generated per UE 100, a plurality of EPS bearers may be generated according to each service characteristic, and various kinds of traffic, that is, an IP flow may exist in the EPS bearer. The MME 310 can manage the mobility state of the subscriber. For example, if the UE 100 is currently connected to the data network system 1 or if it is connected to the Internet, (Idle State), and so on.

The HLR 330 may be a central database of the LTE network that holds key information for authentication for each UE 100, subscriber profile, subscriber location information, and the like. At this time, the subscriber profile may include QoS (Quality of Service) class information for each subscriber, for example, priority, maximum available bandwidth, and the like.

The IGW 350 may be a gateway for connecting the HLR 330 and the TAS 600. At this time, if the IGW 350 fails to provide a connection function due to a failure or the like, a state mismatch between the HLR 330 and the TAS 600 may occur and the normal call of the UE 100 may not be possible.

The PGW 400 may assign an IP address to the UE 100. At this time, the IP address can be allocated through the UE 100 access procedure defined in 3GPP rather than the DHCP protocol. In addition, the PGW 400 may perform anchoring on the SGW 300. For example, when the UE 100 is changed from one SGW 300 to another SGW 300 during movement, the PGW 400 may serve as an anchoring point. The PGW 400 may apply different QoS policies to the UEs 100 and manage accounting data for the UEs 100. At this time, the accounting data may be, for example, uplink traffic amount, connection time, etc., and the PGW 400 may transmit the accounting data to the OFCS 820 in the form of CDR (Charging Data Record). Accordingly, the PGW 400 can generate and manage all of the log data, the amount of data used, and the number of accesses to the OFCS 820 through the accounting data. In addition, the PGW 400 may receive the policies and charges for the UE 100 from the PCRF 700. [

The CSCF 500 is a part responsible for the call processing. The CSCF 500 is composed of ICGW (Incoming CAll GateWay), CCF (CAll Control Function), SPD (Serving Profile Database) and AH (Address handling). ICGW acts as the first entry point and performs routing for incoming calls. It also performs service service triggering on incoming calls such as call screening and forwarding, queries for AH, and communicates with the HSS. The CCF is responsible for call setup and termination and state / event management, interaction with MRF (Multimedia Resource Function) for multi-party services, call event reporting for billing, and reception and processing of application level registration. The SPD communicates with the HSS of the home domain to manage the user profile information and performs a similar function to the VLR of the existing network that informs the home domain at the first access of the user. AH performs the functions of analyzing, converting, and modifying addresses and providing address mobility.

Since the CSCF 500 has different functions to perform according to the network in which the UE 100 is located, the CSCF 500 can perform a P-CSCF (Proxy CSCF), an I-CSCF (Interrogating CSCF) (Serving CSCF). First, the P-CSCF serves as an initial access point for the UE 100 to access the IMS (IP Multimedia Subsystem), and may exist in the same domain as the Gateway GPRS Support Node (GGSN). In addition, the P-CSCF generates a Change Data Record (CDR), and can verify rights of bearer resources and manage quality of service (QoS). Secondly, the I-CSCF is the first point where UE 100 connects to the network, and there may be a plurality of I-CSCFs in one network domain. When the I-CSCF transmits a message between different domains, the I-CSCF may perform a Topology Hiding Inter-Network Gateway (THIG) function of the firewall function to not send a part of the network information. Third, the S-CSCF can perform service to control and manage the session state of the actually registered UE 100, and can provide the UE 100 with information related to the service resource.

The TAS 600 may be a server processing a call. The TAS 600 includes a subscriber database and an interworking interface, and can perform functions of billing, OAM (Operation, Administration, Maintenance). At this time, the function of processing a call may be a function of processing an additional service operation such as a group video call and the entire call processing, and performing a change of a message field for call processing. The billing function may be a function for charging the UE 100. The subscriber database may store information on subscriber's supplementary service status and regi status, etc., and the interworking interface may be configured to handle interworking with various nodes for CSCF 500, HLR 330, . OAM can handle operation, management and maintenance.

The PCRF 700 may be a device for setting rules for policies and charging for each UE 100. At this time, the policy may be QoS information to be used by the UE 100, and the billing information may be information about whether to perform offline charging or online charging. This information can be transferred from the PCRF 700 to the PGW 400 and the PGW 400 can perform control (QoS, Charging) on the UE 100 based on the information received from the PCRF 700 have.

The SPR 810 may store policy and charging rules for each UE 100. Accordingly, the PCRF 700 can obtain information on the UE 100 from the SPR 810. [

The OFCS 820 can receive and manage the CDR transmitted from the PGW 400 at the center.

OCS 830 can centrally manage the remaining usage (Balance or Credit) for real-time usage for each UE 100 when Prepaid is used in UE 100. [ Here, the real time usage amount can be managed by the PGW 400 and the remaining usage amount can be transferred to the OCS 830. [ At this time, the OCS 830 can inform the PGW 400 of the information that the UE 100 using the remaining usage amount can not use any more services.

The PDN 900 may be a public data network, for example, the Internet or an IP network.

A method of synchronizing data session information generated in a data network system according to an embodiment of the present invention will be described as follows.

In recent years, as wireless terminals (UEs) such as smart pads, tablet PCs, and smart phones have been increasingly used, wireless terminals using data networks have been increasing in order to provide better services than 3G.

At this time, if the state information of the wireless terminal changes, the wireless terminal can inform its state information to the HLR. Here, if the transmission of the state information of the wireless terminal fails in an abnormal situation such as an IGW failure, a state mismatch may occur between the HLR and the TAS, so that the normal communication of the wireless terminal may not be possible.

Therefore, if the transmission of the status information from the TAS to the HLR fails, the status information transmission method according to the embodiment of the present invention stores the error response as a flag, and transmits the status change information of the wireless terminal, By re-transmitting, it is possible to distribute the message retransmission time to prevent overload of the TAS and to prevent unnecessary message retransmission of the TAS.

2 is a block diagram illustrating a state information transmission apparatus of a wireless terminal according to an exemplary embodiment of the present invention. At this time, the state information transmission apparatus of the wireless terminal may be implemented by the TAS of FIG. 1, or may be operated by other apparatuses. FIG. 2 illustrates an embodiment in which a state information transmission apparatus of a wireless terminal according to an embodiment of the present invention is implemented as a TAS.

2, the TAS 600 according to an exemplary embodiment of the present invention includes a first transmission unit 610, a storage unit 630, a reception unit 650, and a second transmission unit 670 can do. At this time, the UE 100 of FIG. 1 is defined as a wireless terminal 100.

The first transmitter 610 transmits an ATM (AnyTime Modification) message based on the first event received from the wireless terminal 100 to the HLR 330. At this time, the first event may be a register message for registering the state change data of the wireless terminal 100 in the HLR 330. For example, the wireless terminal 100 transmits data to the HLR 330 indicating that its state has changed when the state information such as power on, its location is changed, or the like is changed. At this time, the TAS 600 and the HLR 330 can register and store the state change information of the wireless terminal 100, and transmit to the subject that has transmitted the state change information as a register message to the subject, For example, a signal such as 200 OK can be transmitted with an ACK signal.

When receiving the registration error response for the ATM message from the HLR 330, the storage unit 630 stores the received registration error response. At this time, the registration error response may be managed with a flag (Flag), and the registration error response may correspond to the error response. At this time, the registration error response may be generated when the IGW 350 connecting the HLR 330 and the TAS 600 does not operate normally.

The receiving unit 650 receives the first event of the wireless terminal 100 or the second event of the outgoing call. At this time, the second event may be an Invite message corresponding to an outgoing call to the destination terminal of the wireless terminal 100.

The second transmitting unit 670 transmits the ATM message to the HLR 330 based on the first event or the second event. That is, when receiving a message (re-Regi) for re-registering the state change information from the wireless terminal 100 or when an outgoing call of the wireless terminal 100 comes up to the TAS 600, the ATM message is transmitted to the HLR 330, . ≪ / RTI >

Since the state information transmission method of FIG. 2 is not explained, it can be easily deduced from the same or explanations as the contents of the state information transmission method described with reference to FIG. 1, and the description will be omitted.

FIG. 3 is a diagram illustrating a process in which data is transmitted and received between the respective components included in the data network system of FIG. 1 according to an embodiment of the present invention. FIG. FIG. 2 is a diagram illustrating a process of transmitting and receiving data between respective components included in a network system; FIG. Hereinafter, an example of a process in which data is transmitted and received between the respective components will be described with reference to FIGS. 3 and 4. However, the present invention is not limited to such an embodiment, and according to various embodiments described above, And the process of transmitting and receiving the data shown in FIG. 4 can be changed by those skilled in the art.

3, when the UE 100 transmits a message Regi for registering state information to the CSCF 500 in step S3110, the CSCF 500 transmits a response 200 OK indicating that the corresponding message is successfully received. To the UE 100 (S3120). Similarly, when the CSCF 500 transmits a message Regi for registering the state information of the wireless terminal 100 to the TAS 600 (S3210), the TAS 600 stores the state change data, And transmits a response to the CSCF 500 (S3230).

The TAS 600 transmits an ATM message to the HLR 330 via the IGW 350 in step S3300. If the connection with the HLR 330 is not possible in step S3400, the IGW 350 transmits a registration error response 3500) to the TAS 600 (S3500). Here, the TAS 600 manages a registration error response with a flag (Flag).

In this case, when the UE 100 transmits a message informing the state change information to the TAS 600 via the CSCF 500 (S3710 to S3910), the state information transmission method according to an embodiment of the present invention includes a TAS The controller 600 transmits an ATM message to the HLR 330 (S3920).

4, when the UE 100 brings an invitation to a called terminal to the TAS 600 (S4700 to S4800), the state information transmission method according to another exemplary embodiment of the present invention, The TAS 600 transmits an ATM message to the HLR 330 (S4900). Here, the steps from S4110 to S4600 in Fig. 4 correspond to the steps from S3110 to S3600 in Fig. 3, so that a duplicate description will be omitted.

3 and 4 can be easily derived from the same or the same contents as those described in the state information transmission method of FIGS. 1 and 2. Therefore, the description of the state information transmission method of FIGS. Omit it.

The order between the above-described steps (S3110 to S3920, S4110 to S4900) is only an example, but is not limited thereto. That is, the order between the steps S3110 to S3920 and S4110 to S4900 may be mutually varied, and some of the steps may be executed or deleted at the same time.

5 is a flowchart illustrating a method of transmitting status information according to an exemplary embodiment of the present invention. Referring to FIG. 5, the TAS transmits an ATM (AnyTime Modification) message based on the Regi message of the wireless terminal received from the wireless terminal to a home location register (HLR) (S5100).

Then, when the TAS receives the registration error response for the ATM message from the HLR or IGW (INTEGRATED GATEWAY), the TAS stores the registration error response (S5200).

The TAS receives the preset event of the wireless terminal (S5300), and retransmits the ATM message to the HLR based on the first event or the second event (S5400).

Since the state information transmission method of FIG. 5 is not explained, it can be easily deduced from the same or described contents of the state information transmission method through FIG. 1 to FIG. 4, and a description thereof will be omitted .

The state information transmission method according to the embodiment described with reference to FIG. 5 may also be implemented in the form of a recording medium including instructions executable by a computer such as an application program module or a program module executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium may include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (5)

Transmitting an ATM (AnyTime Modification) message based on a Regi message of the wireless terminal received from the wireless terminal to a Home Location Register (HLR);
Storing the registration error response when receiving a registration error response for the ATM message from the HLR or IGW (Integrated Gateway);
Receiving a predetermined event of the wireless terminal; And
Transmitting the ATM message to the HLR based on the predetermined event in the receiving step
And transmitting the status information to the wireless terminal.
The method according to claim 1,
Wherein the predetermined event is a first event that is a register message for registering state change data of the wireless terminal in the HLR; or
A second event, which is an Invite message corresponding to an outgoing call to the called terminal of the wireless terminal,
And transmitting the status information to the wireless terminal.
The method according to claim 1,
Wherein the registration error response to the ATM message is managed with a flag.
A first transmission unit for transmitting an ATM (AnyTime Modification) message based on a Regi message of the wireless terminal received from the wireless terminal toward a home location register (HLR);
A storage unit for storing the registration error response when receiving a registration error response for the ATM message from the HLR or IGW (Integrated Gateway);
A receiving unit for receiving a predetermined event of the wireless terminal; And
And a second transmission unit for transmitting the ATM message to the HLR based on the preset event received by the reception unit,
And transmits the status information to the wireless terminal.
5. The method of claim 4,
Wherein the predetermined event is a first event that is a register message for registering state change data of the wireless terminal in the HLR; or
A second event, which is an Invite message corresponding to an outgoing call to the called terminal of the wireless terminal,
The status information of the wireless terminal.

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