KR20040088791A - Method for offering broadcast service in a mobile communication system - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs

The present invention relates to a service providing and method in a mobile communication system, and more particularly to a method for providing a broadcast service in a mobile communication system.

I. The technical problem to be solved by the invention

The present invention provides a broadcast service in which a plurality of users are provided with the same service in a mobile communication system, can prevent waste of system resources, and provide a method for authentication and service provision and user-specific charging. .

All. Summary of Solution of the Invention

The present invention has two or more packet data service nodes, and the packet data service node is a method for providing a broadcast service in a mobile communication system that provides a profile management and broadcast service of a mobile terminal, wherein the packet controller provides a broadcast service from a mobile terminal. Selecting a packet data service node to manage the profile of the mobile terminal by using the temporary of the mobile terminal when a registration message requesting the request is received and providing the reception time information and the information of the mobile terminal to the selected packet data service node; The packet data service node managing the information of the mobile terminal receives the profile data of the mobile terminal from an authentication server, performs an authentication process, and provides an authentication result to the packet controller. Manage information of mobile terminal If the authentication result of the mobile terminal received from the packet data service node is successful, selecting a packet data service node according to the identifier of the broadcast service requested by the mobile terminal and providing a broadcast service identifier to the selected packet data service node. And receiving the broadcast service identifier, establishing a bearer path with a content server providing a broadcast service and providing a broadcast service to a mobile terminal.

la. Important uses of the invention

Used when providing a broadcast service in a mobile communication system.

Description

How to provide broadcasting service in mobile communication system {METHOD FOR OFFERING BROADCAST SERVICE IN A MOBILE COMMUNICATION SYSTEM}

The present invention relates to a service providing and method in a mobile communication system, and more particularly to a method for providing a broadcast service in a mobile communication system.

In general, a mobile communication system has been developed to provide a voice service, and a mobile communication system capable of transmitting data has been developed. As described above, the mobile communication system capable of data transmission is based on the code division multiple access (CDMA) method, and the data service is provided from the IS-95 system. In such a system, it has evolved from delivering short messages at the beginning to staying at providing a small data service such as Internet service. However, the 1x EV-DO (Evolution Data Only) service, which is in the commercial stage of providing commercial services, enables more various types of data services and faster data transmission. In addition, the standardization of the 1x EV-DV (Evolution Data and Voice) system is in progress as a more advanced service concept, and methods for providing more data services and voice services in the 1x EV-DV system are proposed. have.

Most of the services that are standardized in the above systems are based on 1: 1 services. In other words, when providing a service for a specific user in the network, a path unique to the mobile terminal is established, and the path is provided by assigning only the corresponding user. That is, not only the base station but also the upper network of the base station designates an address, such as a telephone number of a specific user, to transmit or receive data through a unique path assigned only to the corresponding user. Therefore, in the current system, the service is configured in a unicast manner.

However, if a plurality of users requests a service that does not require security for the same user, there is a problem in that resources of the system are wasted if separate resources are allocated and provided to each user. For example, when a mobile terminal is provided with a service such as TV broadcasting through a mobile communication system, if a mobile resource channel is allocated to each mobile terminal, it is difficult to provide another service. This causes the same problem in terms of network. That is, since the same TV broadcast service must be allocated to different wired resources for each user, the load of the system increases.

Therefore, as described above, when providing a plurality of users with a specific service that does not require security for each user or is connected to a specific group and does not require security within the group, the method is different from the methods currently provided. You need to provide a service. In other words, it should be possible to provide services to multiple users while saving system resources. This is because a system operator can reduce costs, and a user who is provided with a service can receive a cheaper service. Therefore, a broadcast service is required to simultaneously provide services to users who want service for a specific service that does not require security for each user or is connected to a specific group and security is not required within the group.

In order to provide a service as described above, negotiations on 1x EV-DV standardization are being made. However, the above services are provided to all users the same service. Therefore, the service cannot be performed by authenticating, providing a service, and charging a specific user only. This is because the same service must be provided to multiple users. However, as proposed in the present system or the present 1x EV-DV standard, the above service cannot be provided. This is because services to date have all been based on a single transmission scheme.

Therefore, the broadcast service can be authenticated to a plurality of users, can provide a service according to the authentication, and a method for performing billing according to the provided service is required.

Accordingly, an object of the present invention is to provide a method for providing a broadcast service in which a plurality of users receive the same service in a mobile communication system.

Another object of the present invention is to provide a method for preventing waste of system resources when a plurality of users are provided with the same service in a mobile communication system.

Another object of the present invention is to provide a method for performing authentication and service provision and user-specific charging when multiple users receive the same service in a mobile communication system.

The method according to the first embodiment of the present invention for achieving the above objects, has two or more packet data service node, the packet data service node is broadcast in a mobile communication system that provides a profile management and broadcasting service of a mobile terminal As a method for providing a service, the packet controller selects a packet data service node to manage a profile of the mobile terminal by using a temporary terminal of the mobile terminal when a registration message requesting a broadcast service is received from the mobile terminal and receives time information. And providing information of the mobile terminal to the selected packet data service node, and the packet data service node managing the information of the mobile terminal receives profile data of the mobile terminal from an authentication server and performs an authentication process. Providing to the packet controller; The packet data controller selects a packet data service node according to an identifier of a broadcast service requested by the mobile terminal when the authentication result of the mobile terminal received from the packet data service node managing the information of the mobile terminal is successful. Providing a broadcast service identifier to a packet data service node; and receiving the broadcast service identifier, establishing a bearer path with a content server that provides a broadcast service and providing a broadcast service to a mobile terminal. ,

The packet control unit;

When selecting a packet data service node to manage the profile of the mobile terminal, the temporary operation of the mobile terminal is determined by modular operation by the number of packet data service nodes, and the request is received from the mobile terminal when selecting a packet data service node to provide the broadcast service. The determined broadcast service identifier is determined by modular operation with the number of packet data service nodes.

In addition, the packet control unit or the packet data service node managing the profile of the mobile terminal includes the step of generating an encryption key of the broadcast service for each predetermined time and providing it whenever there is a registration of the mobile terminal,

The mobile terminal generates a registration message and transmits the registration message to a base station controller of the system when a broadcast service is continuously requested, and the base station controller includes reception time information when the registration message is received. And providing the packet data service node managing the profile of the mobile terminal through a packet controller, wherein the packet data service node managing the user profile performs charging using the reception time information received from the base station controller. It may include the process of doing.

And, the mobile terminal includes the process of decrypting the broadcast service using the received encryption key.

The method according to the first embodiment of the present invention for achieving the above object, has two or more packet data service node, the packet data service node is a packet of a mobile communication system for providing a profile management and broadcasting service of a mobile terminal A method for providing a broadcast service in a control unit, the method comprising: selecting a first packet data service node to manage a profile of the mobile terminal using information of the mobile terminal when a registration message requesting a broadcast service is received from the mobile terminal, Providing the information of the mobile terminal to the first packet data service node for authentication of the mobile terminal, and receiving the authentication result of the mobile terminal from the first packet data service node received from the mobile terminal Selecting the second packet data service node according to the broadcast service identifier And providing a broadcast service identifier to the second packet data service node, setting a path for a broadcast service upon receiving a response signal from the second packet data service node, receiving a broadcast service, and transmitting the broadcast service to the mobile terminal. Process.

A method according to a second embodiment of the present invention for achieving the above objects, has two or more packet data service node, the packet data service node is broadcast in a mobile communication system that provides a profile management and broadcasting service of a mobile terminal As a method for providing a service, the packet controller selects a packet data service node to manage a profile of the mobile terminal by using a temporary terminal of the mobile terminal when a registration message requesting a broadcast service is received from the mobile terminal and receives time information. And providing information of the mobile terminal to the selected packet data service node, and the packet data service node managing the information of the mobile terminal receives profile data of the mobile terminal from an authentication server and performs an authentication process. Provides to the packet control unit and moves Selecting a packet data service node to provide a broadcast service using the broadcast service identifier requested by the mobile terminal and providing a broadcast service identifier to the selected packet data service node when the authentication result of the horse is successful; The packet data service node receiving the service identifier establishes a bearer path with a content server that provides a broadcast service, and establishes a bearer path with the packet controller and then provides a broadcast service to a mobile terminal.

1 is a block diagram of a mobile communication system for providing a broadcast service according to the present invention;

2 is a signal flow diagram at the time of message registration in service registration, authentication and service provision in a system for providing a broadcast service according to the present invention;

3 is a control flowchart performed when a broadcast service is requested in a packet controller according to the first embodiment of the present invention;

4 is a signal flow diagram when a message is delivered during service registration, authentication, and service provision in a system for providing a broadcast service according to a second embodiment of the present invention;

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings.

In addition, in the following description, there are many specific details such as specific messages or signals, which are provided to aid the overall understanding of the present invention, and it is understood that the present invention may be practiced without these specific details. It will be self-evident to those of ordinary knowledge. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In the present invention, first, a method for allocating authentication and resource allocation in a mobile communication system according to a broadcast service requested by a user will be described. Second, a billing method according to a broadcast service requested by a user will be described.

Looking at the process according to the first method described above is as follows. The mobile terminal transmits a broadcast service request message through a predetermined channel to the base station for listening to the broadcast service. The base station then transmits the broadcast service request message to a packet data service node (PDSN). The packet data service node stores various services required for user authentication, and determines whether to authenticate according to the message. When the service is authenticated, the packet data service node notifies a packet controller (PCF: Packet Control Function) whether resource allocation for the broadcast service. The packet controller determines a packet data service node capable of a broadcast service based on the requested broadcast service information. And allocating communication resources between the packet data service node capable of the broadcast service and the mobile communication system by exchanging the packet control period information with the packet data service node. The broadcast service is provided by notifying the mobile station of the allocated resource.

Next, the process for the second method is as follows. When the broadcast service is performed in the first process, that is, the mobile terminal is charged when the broadcast service is notified. Thereafter, when the mobile terminal wants to continuously receive the broadcasting service, the mobile terminal inspects the packet data service node storing the user information and periodically notifies the service maintenance information to use for charging.

1 is a block diagram of a mobile communication system for providing a broadcast service according to the present invention. Hereinafter, each component constituting the mobile communication system and its function will be described in detail with reference to FIG. 1.

First, the configuration of FIG. 1 will be described. The mobile station (MS) 101 is a terminal that can receive a packet data service through a wireless channel, and can also receive a broadcast service provided through a wireless channel. The base stations (BTS) 103a, ..., 103b, 104a, ..., 104b provide a broadcast service through a forward broadcast service channel (F-BSCH) and at the same time, a parameter message (BSPM) according to the broadcast service. Broadcast Service Parameter Message) is transmitted to the mobile terminal through a wireless channel. The base stations 103a,... 103b, 104a,..., 104b may be connected to the base station controllers 105a, 105b, respectively, to provide a packet data service. The base station controllers 105a and 105b are connected to packet control functions (PCFs) 107a and 107b. The packet controllers 107a and 107b are connected to a packet data service node 109. Although the packet data service node 109 is composed of one block in FIG. 1, one system may be configured of several packet data service nodes. In addition, the packet data service node 109 is connected to an authentication (Accounting and Authorization) system for authentication of a mobile terminal. The packet data service node 109 is connected to a content server (CS) 113 that provides a broadcast service.

Referring to the operation of each device according to the above configuration is as follows. First, the mobile terminal 101 may receive a packet data service through a wireless channel, convert the broadcast call request and data to be transmitted into packet data, and transmit the packet data service to the base station through the wireless channel. In addition, in the present invention, when the mobile terminal receives the broadcast service, the mobile terminal maintains the broadcast service by transmitting a registration message every predetermined period. This performs the same operation even when called. In addition, when generating a registration message, the mobile terminal 101 transmits the mobile terminal 101 including an interim (IMSI: International Mobile Subscriber Identity) which is a mobile phone number system of the mobile terminal. In addition, the mobile terminal 101 may use an end point protocol (PPP), and may perform operations required for authentication with the packet data service node 109 using the end point protocol. In addition, the mobile terminal 101 generates a registration message every predetermined time and delivers the registration message to the packet control unit or packet data service node of the system. When the broadcast service is encrypted and received, the mobile terminal 101 decrypts the encrypted data using the encryption key received after the registration message is transmitted and provides the same to the user.

The base stations 103a, ..., 103b, 104a, ..., 104b up-convert the packet data to be transmitted to a predetermined band for transmission of the packet data service with the mobile terminal and transmit the converted data over the air. The base stations 103a, ..., 103b, 104a, ..., 104b also down-convert the packet data received on the air from the mobile terminal and provide it to the base station controllers 105a, 105b. When the base station controllers 105a and 105b receive a registration message received from the mobile station from the base station, the base station controllers 105a and 105b generate an IOS (Inter Operability System) message including the reception time (Time_Stamp) information in the registration message and deliver the message to the packet controller. do. At this time, if the registration message received from the base station is a message for the mobile terminal requesting a broadcast service, the identifier (BCMCS_ID) of the requested broadcast service and the temporary number, which is the phone number of the mobile terminal, are delivered together to the packet controller.

The packet controllers 107a and 107b select a packet data service node when a broadcast service or a specific packet data service is requested from the mobile terminal. In general, a packet data service node includes a plurality of packet data service nodes in one system. For example, when one packet data service node system is configured with three packet data service nodes, the packet controllers 107a and 107b select one packet data service node among three packet data service nodes to service the mobile terminal. Will be required. As such, the reason why the packet controllers 107a and 107b select the packet data service node is to consider load balancing. That is, this is a method for preventing the load from being concentrated on a specific packet data service node. In the present invention, the packet controllers 107a and 107b use a method using modular operation as a method of selecting a packet data service node. In the modular operation, the packet data service node is selected according to a value obtained by performing a modular operation with a temporary number, which is the telephone number of the mobile terminal, as the number of the packet data service node. In addition, the method may be configured to be always connected between a specific packet control unit and a specific packet data service node by a method different from the above method.

Also, according to the first embodiment of the present invention, the packet controllers 107a and 107b determine a packet data service node to provide a broadcast service using an identifier of a broadcast service. In detail, the packet controllers 107a and 107b may determine a packet data service node to provide a broadcast service by using a modular operation with the broadcast service identifier as the number of packet data service nodes. Therefore, in the present invention, a packet data service node selected by using a temporary provision for a specific mobile terminal and a packet data service node according to a broadcast service requested by the mobile terminal may be different from each other. In FIG. 2 to be described below, a case in which packet data service nodes managing information on a mobile terminal and packet data service nodes providing broadcast services are different from each other will be described. That is, since the packet data service node manages the information of the mobile terminal and provides a broadcast service, all of them are performed in one system, and thus the flow of FIG.

In addition, the packet controllers 107a and 107b may select the packet data service node to manage the information of the mobile terminal because a broadcast service is required, and thus the packet data service node corresponding to the temporary number of the mobile terminal and the information of the reception time through an IOS message. To pass. In addition, when the packet data service node providing the broadcast service is selected, the packet controllers 107a and 107b transmit the IOS message including the identifier of the requested broadcast service to the packet data service node to request the broadcast service. The packet controllers 107a and 107b inform the base station controller that the bearer path setup is completed when the response signal is received for the IOS message requesting the broadcast service so that the broadcast service can be provided.

As described above, the packet data service node 109 is illustrated as one in FIG. 1, but may be configured as a plurality of packet data service nodes in one system. The packet data service nodes request broadcast service authentication to the home authentication system 111 of the mobile terminal for authentication upon receiving an IOS message of the mobile terminal from the packet controller, and receive and manage profile information of the corresponding user. . The packet data service node receives the user's profile information in this way and manages the profile for the user's mobile terminal for a preset time. At this time, if there is a service request from the mobile terminal, the packet data service node updates and manages the set time again. And when there is no more service request from the mobile terminal, the charging information is generated according to the profiles for the mobile terminal.

Next, the process of generating charging information in the packet data service node will be described. The packet data service node receives and stores reception time (stamp_stamp) information generated by the base station controller when an initial broadcast service is requested. And while the user's authentication is completed and the service is running, the user's profile is continuously stored and managed. In this case, the mobile terminal periodically generates a registration message and delivers the registration message to the base station controller when the service is to be maintained continuously. Then, the packet data service node managing the user's information is transmitted from the packet controller to the same packet data service node according to the method of selecting the packet data node, where the reception time information is included. Therefore, charging for the broadcast service may be performed based on the reception time. In addition to billing, a broadcast service is provided to a mobile terminal from a specific packet data service node.

Next, in the case of a packet data service node in which a broadcast service is provided, a bearer path is established between the base station controller and the packet data service node when there is a request for the packet data service. In addition, the packet data service node or the packet controller generates an encryption key that can be used by the terminal receiving the broadcasting service while receiving the broadcasting service, and transmits the encryption key to the mobile terminal through the base station controller. Such an encryption key generally has a key value different from that provided by the content server 113 and may be configured as a short key. Therefore, it is preferable to take the use time of the encryption key relatively short, and the mobile terminal should deliver the registration message within a time shorter than the use time of the encryption key. Accordingly, the packet data service node or the packet controller managing the profile of the user may provide a new encryption key to the mobile terminal whenever a registration message is received.

In addition, the packet data service node may determine a packet data service node to provide a broadcast service. As described above, determining the packet data service node to provide the broadcast service in the packet data service node is a second embodiment of determining the packet data service node to provide the broadcast service. As described above, the method for determining a packet data service node to provide a broadcast service may be the same as the method performed by the packet controllers 107a and 107b or may be connected to a predetermined node according to a broadcast service identifier. In this case, the packet data service node managing the user profile may provide the profile information of the corresponding user to the profile server providing the broadcast service, so that the processing of billing for the broadcast service may be processed by the profile server providing the broadcast service. .

2 is a signal flow diagram when a message is delivered during service registration, authentication, and service provision in a system for providing a broadcast service according to the present invention. Hereinafter, a signal flow when providing a broadcast service in a mobile communication system according to the present invention will be described in detail with reference to FIG. 2. In addition, the base station of the components of Figure 1 will be described except in the description of Figure 2, the base station controller (BSC) using a reference numeral 105 as a representative, the packet controller (PCF) using a reference numeral 107 Explain. In addition, packet data service nodes are not shown separately in FIG. 1. However, in the description of FIG. 2, a packet data service node (user profile management PDSN) managing a user profile is hereinafter referred to as a "first packet data service node" and is referred to by reference numeral 109a. A packet data service node (BSCMS PDSN) providing a broadcast service is hereinafter referred to as a "second packet data service node" and will be described with reference numeral 109b. The authentication system (AAA) will be described as a home authentication system (Home AAA) 111 of the mobile terminal, and will be described with a content server 113 providing a broadcast service.

The mobile terminal 101 is connected to the first packet data service node 109a through the base station controller 105 and the packet controller 107 by performing a call. In the following description, it is assumed that the mobile terminal 101 has a call request for a packet data service for a broadcast service. As such, when the connection between the first packet data service node 109a and the mobile terminal 101 is established, the mobile terminal 101 performs session establishment of a PPP (Point to Point Protocol) in step 201a. At this time, the first packet data service node 109a establishes a session using an IMSI, which is a telephone number system of the mobile terminal 101 received from the packet controller 107. The session establishment in step 201a is a general process performed when the mobile terminal 101 receives a packet data service.

When the session setup between the mobile terminal 101 and the first packet data service node 109a is completed, the first packet data service node 109a is broadcast to the home authentication system 111 in step 201b since the broadcast service is required. Ask for service. Accordingly, the home authentication system 111 examines the user profile of the mobile terminal and performs the requested BCMSC service authentication. The home authentication system 111 transmits the authentication result to the first packet data service node 109a. Here, only the case where authentication of the mobile terminal 101 succeeds will be examined. In this way, upon receiving the information according to the authentication success of the mobile terminal, the first packet data service node 109a stores the information of the mobile terminal, and transmits the PPP to the mobile terminal 101 that the protocol is successfully established. .

As described above, if the PPP protocol is successfully established, the mobile terminal 101 transmits an identifier (BCMCS_ID) or the like for a broadcast service to a base station (BTS) with a registration message in step 203. 2 to the base station controller 105). Then, when the base station controller 105 receives the registration message including the requested broadcast service identifier and the like, in step 205, the base station controller 105 sets a message reception time (Time_stamp) to the request message of the broadcast service requested by the mobile terminal 101, and then the packet controller. Forward to 107. At this time, the message transmitted from the base station controller 105 to the packet controller 107 is a message for checking whether the connection of the mobile communication network can be established through user authentication confirmation as IOS. By setting the reception time in the IOS message in this way, it is possible to set the start time of charging for the broadcast service.

Upon receiving the IOS message, the packet controller 107 selects a packet data service node using IMSI, which is the telephone number of the mobile terminal received from the base station controller 105 in step 207. The selection of the packet data service node is performed by the method described with reference to FIG. 1. When the packet controller 107 selects a packet data service node to manage the information of the mobile terminal 101, the IOS message is transmitted to the first packet data service node 109a which is the selected packet data service node in step 209. To pass. By transmitting the IOS message to the first packet data service node 109a as described above, the first packet data service node 109a manages the profile and the charging information for the corresponding mobile terminal.

That is, as described above with reference to FIG. 1, even when the first packet data service node 109a is not a packet data service node providing a broadcast service, information management for a user is uniformly performed. In addition, as described with reference to FIG. 1, only when the packet data service node managing the profile of the mobile terminal provides the broadcast service, the profile of the mobile terminal is delivered to the packet data service node providing the broadcast service and managed. It can also be configured. However, in the embodiment of the present invention, it is described that a profile of the mobile terminal is managed by one packet data service node.

When the first packet data service node 109a receives the IOS message, the first packet data service node 109a checks the validity of the user who receives the request for authentication and charging, that is, the broadcast service request, by using the received IOS message. If authentication is successful, the first packet data service node 109a classifies and stores time information for charging according to a user profile, and in step 211, generates an IOS reply message to the message and generates a packet. Transfer to the control unit 107. When the packet control unit 107 receives the IOS response message in step 211, the packet control service node capable of receiving the packet data service using the broadcast service identifier (BCMCS_ID) in step 213 as described with reference to FIG. Decide on 2 illustrates an example in which a packet data service node capable of receiving a broadcast service and a packet data service node performing user profile management are different from each other.

When the packet controller 107 determines the packet data service node to provide the broadcast service as described above, the packet controller 107 sends an IOS message to the second packet data service node 109b to provide the broadcast service including the broadcast service identifier in step 215. To pass. In this way, the packet data service node for providing the broadcast service may perform preparation for providing the service by delivering the second packet data service node 109b for providing the broadcast service. That is, the second packet data service node 109b sets up a bearer path with the content server 113 providing the broadcast service.

In addition, the second packet data service node 109b receives the IOS message, allocates resources necessary for establishing a bearer path, and in step 217, a reply message for receiving an IOS message to the packet controller 107. Send it. When the packet controller 107 receives a response message for receiving the IOS message, the packet controller 107 generates and transmits an IOS message to the base station controller 105. The generated IOS message is a message indicating that a broadcast connection between the packet controller 107 and the second packet data service node 109b providing a broadcast service is established.

Then, the mobile terminal 101 can receive a broadcast service from the content server 113 in step 221. At this time, the content server 113 and the second packet data service node 109b receive data in a format such as an Internet protocol (IP). The packet data is transmitted between the second packet data service node 109b and the base station controller 105 through a bearer path.

3 is a control flowchart performed when a broadcast service is requested in a packet controller according to the first embodiment of the present invention. Hereinafter, an operation performed by the packet controller when a broadcast service is requested according to the present invention will be described in detail with reference to FIG. 3. In the description of FIG. 3, the packet control unit is described with reference numeral 107 using one reference numeral.

The packet controller 107 maintains the standby state in step 300. In the present invention, since the description is made only from the viewpoint of providing a broadcast service, other cases will not be described. The packet controller 107 maintains the standby state of step 300 and proceeds to step 302 to check whether the mobile terminal requires PPP configuration for packet data service. If the PPP setting is requested from the specific mobile terminal as a result of step 302, the process proceeds to step 304. If the PPP setting is not requested from the specific mobile terminal, the standby state of step 300 is maintained. In step 304, the packet controller 107 performs PPP authentication on the corresponding mobile terminal. Since this process must be performed before the packet data service is requested from the mobile terminal or from the network to the mobile terminal, it will not be described in detail.

The packet controller 107 performs PPP authentication in step 304 and proceeds to step 306 to check whether an IOS message has been received. Here, the IOS message refers to a message including a broadcast service identifier (BCMCS_ID) for requesting a broadcast service and reception time information of a registration message, as described with reference to FIG. 2. The packet controller 107 proceeds to step 308 when the IOS message is received in step 306. In step 308, the packet controller 107 selects a packet data service node (PDSN) that manages the profile of the mobile terminal using the mobile number (IMSI) of the mobile terminal, as described with reference to FIGS. 1 and 2. do. The packet controller 107 transmits an IOS message to the PDSN selected in step 308. In this case, the delivered IOS message becomes information including an identifier (BCMCS_ID) and reception time (Time_Stamp) information of a broadcast service.

The packet controller 107 transmits the IOS message in step 308, and then proceeds to step 310 and checks whether an authentication success message is received within a preset time. If the authentication success message is received within the preset time as a result of the check in step 310, the process proceeds to step 312. If the authentication success message is not received within the preset time, the process proceeds to the standby state of step 300. Since the authentication is not successful or the processing within the predetermined time is the same as in the case of a general error, it will not be described in detail. If authentication of the check result in step 310 succeeds, the packet controller 107 selects a packet data service node to provide a broadcast service using the received broadcast service identifier BCMCS_ID in step 312. The packet controller 107 then proceeds to step 312 and transmits the IOS message to the selected packet data service node. The IOS message transmitted in step 312 is transmitted including the broadcast service identifier.

As described above, the packet controller 107 proceeds to step 314 after transmitting the IOS message and checks whether a reply message is received within a predetermined time. If the check result response message of step 314 is received, the packet controller 107 proceeds to step 316. If the response message is not received within a preset time, the packet controller 107 proceeds to the standby state of step 300. In step 316, the packet controller 107 performs an operation for providing a broadcast service. However, if the test result response signal of step 314 is not received, the packet controller 107 is caused by an error in the system. Therefore, the packet controller 107 performs the processing and proceeds to the standby state of step 300.

4 is a signal flow diagram when a message is delivered during service registration, authentication, and service provision in a system for providing a broadcast service according to a second embodiment of the present invention. Hereinafter, a signal flow for message registration according to registration, authentication, and service provision of a service when providing a broadcast service according to the second embodiment of the present invention will be described in detail with reference to FIGS. 1 and 4. In addition, as shown in the description of FIG. 2, the base station among the components of FIG. 1 will be described except in the description. The base station controller (BSC) uses the reference numeral 105 as a representative, and the packet controller (PCF) is referred to. It demonstrates using the code | symbol 107. Although the packet data service node is not illustrated separately in FIG. 1, in the description of FIG. 4, a packet data service node (user profile management PDSN) managing a user profile is referred to hereinafter as a “first packet data service node”. It demonstrates with 109a. A packet data service node (BSCMS PDSN) providing a broadcast service is hereinafter referred to as a "second packet data service node" and will be described with reference numeral 109b. The authentication system (AAA) will be described as a home authentication system (Home AAA) 111 of the mobile terminal, and will be described with a content server 113 providing a broadcast service.

The mobile terminal 101 is connected to the first packet data service node 109a through the base station controller 105 and the packet controller 107 by performing a call. In the following description, it is assumed that the mobile terminal 101 has a call request for a packet data service for a broadcast service. As such, when the connection between the first packet data service node 109a and the mobile terminal 101 is established, the mobile terminal 101 performs session establishment of the PPP in step 401a. At this time, the first packet data service node 109a establishes a session using an IMSI, which is a telephone number system of the mobile terminal 101 received from the packet controller 107. The session establishment in step 401a is a general process performed when the mobile terminal 101 receives a packet data service.

When the session setup between the mobile terminal 101 and the first packet data service node 109a is completed, the first packet data service node 109a is broadcast to the home authentication system 111 in step 401b because a broadcast service is required. Ask for service. Accordingly, the home authentication system 111 examines the user profile of the mobile terminal and performs the requested BCMSC service authentication. The home authentication system 111 transmits the authentication result to the first packet data service node 109a. Here, only the case where authentication of the mobile terminal 101 succeeds will be examined. In this way, upon receiving the information according to the authentication success of the mobile terminal, the first packet data service node 109a stores the information of the mobile terminal, and transmits the PPP to the mobile terminal 101 that the protocol is successfully established. .

As described above, if the PPP protocol is successfully established, the mobile terminal 101 transmits an identifier (BCMCS_ID) or the like for a broadcast service to a base station (BTS) with a registration message in step 403. (Not shown in Fig. 4) to the base station controller 105. When the base station controller 105 receives the registration message including the requested broadcast service identifier, the base station controller 105 sets a message reception time (Time_stamp) to the request message of the broadcast service requested by the mobile terminal 101 in step 405. Forward to 107. At this time, the message transmitted from the base station controller 105 to the packet controller 107 is a message for checking whether the connection of the mobile communication network can be established through user authentication confirmation as IOS. By setting the reception time in the IOS message in this way, it is possible to set the start time of charging for the broadcast service.

Upon receiving the IOS message, the packet controller 107 selects a packet data service node using IMSI, which is a telephone number of the mobile terminal received from the base station controller 105 in step 407. The selection of the packet data service node is performed by the method described with reference to FIG. 1. When the packet controller 107 selects a packet data service node to manage the information of the mobile terminal 101, an IOS message is sent to the first packet data service node 109a which is the selected packet data service node in step 409. To pass. By transmitting the IOS message to the first packet data service node 109a as described above, the first packet data service node 109a manages the profile and the charging information for the corresponding mobile terminal.

That is, as described above with reference to FIG. 1, even when the first packet data service node 109a is not a packet data service node providing a broadcast service, information management for a user is uniformly performed. In addition, as described with reference to FIG. 1, only when the packet data service node managing the profile of the mobile terminal provides the broadcast service, the profile of the mobile terminal is delivered to the packet data service node providing the broadcast service and managed. It can also be configured. However, in the embodiment of the present invention, it is described that a profile of the mobile terminal is managed by one packet data service node.

When the first packet data service node 109a receives the IOS message, the first packet data service node 109a checks the validity of the user who receives the request for authentication and charging, that is, the broadcast service request, by using the received IOS message. If authentication is successful, the first packet data service node 109a classifies and stores time information for billing for each user profile. In operation 411, the first packet data service node 109a generates an IOS acknowledgment message including the success or failure of the IOS message received in operation 409, and transmits the generated IOS response message to the packet controller 107.

In operation 413, the packet data service node 109a determines the packet data service node 109a to provide a broadcast service. In this case, the decision of the packet data service node 109a to provide the broadcast service is to distribute the load on the broadcast service. As described above with reference to FIG. Follow the results. Alternatively, the packet data service node may have broadcast service identifiers that it may serve, and may store identifiers for broadcast services that may be serviced by other packet data service nodes in a table. In this case, the packet data service node examines the received broadcast service identifier to check whether the packet data service node is a broadcast service that can be serviced by itself, and performs an operation for providing the service if it can service. However, the packet data service node managing the user profile may find a packet data service node that can service the corresponding table when the requested broadcast service cannot be serviced. Alternatively, only the type of broadcast service that can be provided by the user may be stored. In this case, when the packet data service node managing the user profile cannot provide the requested broadcast service, the packet data to provide the broadcast service may be inspected by modularly calculating the identifier of the broadcast service with the number of the packet data service node. have.

In the embodiment of the present invention, it is assumed that a packet data service node managing a user profile and a packet data service node providing a broadcast service are different from each other. If the two packet data service nodes are the same, different cases will be described since service provision, profile management, and billing are easy. In addition, hereinafter, a packet data service node that manages a user profile will be described as a method of determining a packet data service node capable of providing a broadcast service through a modular operation using an identifier of a broadcast service.

As such, in order to determine a packet data service node for providing a broadcast service, the packet data service nodes should have a table list of broadcast packet data service nodes as shown in Table 1 below.

Accessible PCF Number PCF IP Address Broadcast PDSN Number Broadcast IP address Supported BCMCS_IDs One 165.213.1.1 0 165.213.177.1 BCMCS_ID1, BCMCS_ID2, BCMCS_ID3. One 165.213.177.2 BCMCS_ID4, BCMCS_ID5, BCMCS_ID6. 2 165.213.177.3 BCMCS_ID7 N-1 X.X.X.X ect 2 X.X.X.X 0 X.X.X.X BCMCS_ID (1) One X.X.X.X BCMCS_ID (2) N-1 X.X.X.X BCMCS_ID (3)

Using the table as shown in Table 1, the first packet data service node 109a checks from which packet control unit a request for a broadcast service is received. Thereafter, the first packet data service node 109a checks the packet data service node capable of providing the broadcast service corresponding to the broadcast service identifier BCMCS_ID from the table in Table 1 above. Thereafter, the first packet data service node 109a generates an IOS message to be transmitted to the second packet data service node 109b which is selected, that is, broadcast service is available. In this case, the generated IOS message includes information for the broadcast service resource allocation by the second packet data service node 109b. Accordingly, the IOS message includes an IP address of a broadcast service originator and a packet controller requesting service. The first packet data service node 109a then transfers the generated IOS message to the second packet data service node 109b in step 417.

In step 417, when the second packet data service node 109b receives the IOS message, the second packet data service node 109b generates a response message according to the reception of the IOS message, that is, a response (ACK) message indicating that the message has been normally received. Forward to 109a. Thereafter, the second packet data service node 109b generates an IOS message to provide a broadcast service. The generated IOS message includes a broadcast service identifier (BCMCS_ID). Therefore, in operation 417, the second packet data service node 109b transmits the packet information to the packet controller 107 using the address of the packet controller 107 received from the first packet data service node 109a. Through this, the second packet data service node 109b providing the broadcast service requests the packet controller 107 to establish a connection and allocate resources.

When the packet controller 107 receives the IOS message including the broadcast service identifier received in step 417, the packet controller 107 transmits an IOS message to establish a connection with the second packet data service node 109b in step 419. In this case, the IOS message must also include a broadcast service identifier. In addition, the second packet data service node 109b establishes a bearer path with the content server 113. When the second packet data service node 109b receives an IOS message including an identifier of a broadcast service for connection in step 419, the second packet data service node 109b performs a connection mode with the packet controller 107. Create and deliver a message.

Through the above process, the packet controller 107 and the second packet data service node 109b for providing a broadcast service are connected. When the connection is made in this manner, the packet controller 107 proceeds to step 425 and generates an Ack message for the IOS message and transmits it to the base station controller 105. This is a process for establishing a connection with the base station 105 for delivery of broadcast content to the base station controller 105, and becomes a response signal to the IOS message received from the base station controller 105 in step 405. When the connection with the base station is established through this process, the mobile terminal 101 can receive the broadcast service through the bearer path with the broadcast content server 113 in step 427.

In addition, as described in the first embodiment, the packet controller 107 or the packet data service node 109b for providing a broadcast service generates an encryption key at a predetermined predetermined time unit so that each time a registration message of the mobile terminal is received. To maintain the broadcast service. In addition, the first packet data service node 109a transfers the reception time information of the registration signal to the packet controller 107 whenever the base station controller 105 receives the registration signal, thereby charging the accounting using the information received from the packet controller 107. To perform. Accordingly, in the second embodiment, the packet data service node that performs the charging, that is, manages the profile of the mobile terminal, and the packet data service node that provides the broadcast service may be different from each other.

As described above, when providing a broadcast service in a mobile communication system, there is an advantage that a data service can be provided without a special additional device. In addition, by using only one bearer path for one broadcast service, resource utilization may be increased, and accurate charging may be performed in real time while maintaining the same identity for authentication and charging.

Claims (22)

A method for providing a broadcast service in a mobile communication system having two or more packet data service nodes, wherein the packet data service node provides a profile management and a broadcast service of a mobile terminal. The packet controller selects a packet data service node to manage a profile of the mobile terminal by using the temporary terminal of the mobile terminal when a registration message requesting a broadcast service is received from the mobile terminal and selects the reception time information and the information of the mobile terminal. Providing the packet data service node; The packet data service node managing the information of the mobile terminal receives the profile data of the mobile terminal from an authentication server, performs an authentication process, and then provides an authentication result to the packet controller. The packet data controller selects a packet data service node according to an identifier of a broadcast service requested by the mobile terminal when the authentication result of the mobile terminal received from the packet data service node managing the information of the mobile terminal is successful. Providing a broadcast service identifier to a packet data service node; The packet data service node receiving the broadcast service identifier includes establishing a bearer path with a content server providing a broadcast service and providing a broadcast service to a mobile terminal. The method of claim 1, wherein the packet control unit, And selecting a packet data service node to manage the profile of the mobile terminal by modularly calculating the temporary of the mobile terminal by the number of packet data service nodes. The method of claim 1, The packet controller or the packet data service node managing the profile of the mobile terminal may further include generating an encryption key of the broadcast service every predetermined time and providing the registration of the mobile terminal whenever there is a registration of the mobile terminal. Broadcast service providing method in a mobile communication system. The method of claim 3, wherein the mobile terminal, And generating a registration message at a predetermined time period when the broadcast service is continuously requested, and transmitting the registration message to the base station controller of the system. The method of claim 4, wherein the base station controller, And providing the received time information when the registration message is received to a packet data service node managing the profile of the mobile terminal through a packet control unit. The method of claim 5, The packet data service node managing the user profile further includes the step of performing charging using the reception time information received from the base station controller. The method of claim 3, wherein the mobile terminal, And decoding the broadcast service using the received encryption key. A method for providing a broadcast service in a packet control unit of a mobile communication system having two or more packet data service nodes, wherein the packet data service node provides profile management and broadcast services of a mobile terminal. When a registration message requesting a broadcast service is received from a mobile terminal, a first packet data service node for managing a profile of the mobile terminal is selected using information of the mobile terminal, and information of the mobile terminal for authentication of the mobile terminal is selected. Providing to the first packet data service node; When the authentication result of the mobile terminal is successful from the first packet data service node, the second packet data service node is selected according to the broadcast service identifier received from the mobile terminal, and the broadcast service is transmitted to the second packet data service node. Providing an identifier, And setting a path for a broadcast service upon receiving a response signal from the second packet data service node, receiving a broadcast service, and transmitting the received broadcast service to the mobile terminal. The method of claim 8, wherein the information for authentication of the mobile terminal is temporary (IMSI) of the mobile terminal. The method of claim 8, And providing the reception time information of the registration message to the first packet data service node when providing the information of the mobile terminal to the first packet data service node for a broadcast service. To provide broadcast services The method of claim 8, And selecting a first packet data service node to manage the profile of the mobile terminal by performing a modular operation on the number of packet data service nodes. The method of claim 8, The packet control unit further comprises the step of generating an encryption key of the broadcast service every predetermined time and providing it whenever there is a registration of the mobile terminal. A method for providing a broadcast service in a mobile communication system having two or more packet data service nodes, wherein the packet data service node provides a profile management and a broadcast service of a mobile terminal. The packet controller selects a first packet data service node to manage a profile of the mobile terminal by a predetermined method when a registration message requesting a broadcast service is received from the mobile terminal and selects the reception time information and the information of the mobile terminal. Providing the first packet data service node; The first packet data service node that manages the information of the mobile terminal receives the profile data of the mobile terminal from the authentication server, performs an authentication process, and then provides an authentication result to the packet controller, and the authentication result of the mobile terminal is successful. Selecting a second packet data service node to provide a broadcast service by a predetermined method and providing a broadcast service identifier to the selected second packet data service node; And a second packet data service node having received the broadcast service identifier, providing a broadcast service to a mobile terminal after establishing a bearer path with the packet controller. The method of claim 13, wherein the packet control unit, And setting a bearer path and establishing a bearer path with a base station controller including a corresponding mobile terminal when a bearer path setting request for a broadcast service is requested from a second packet data service node providing the broadcast service. Broadcast service providing method in a mobile communication system. The method of claim 13, wherein the packet control unit, The predetermined method when selecting a first packet data service node for managing a profile of the mobile terminal uses the temporary of the mobile terminal. The method of claim 15, wherein the packet control unit, And selecting a first packet data service node to manage the profile of the mobile terminal by determining a temporary operation of the mobile terminal by the number of packet data service nodes. The method of claim 13, The packet controller or the first packet data service node managing the profile of the mobile terminal may further include generating an encryption key of the broadcast service every predetermined time and providing the registration whenever the mobile terminal exists. Broadcast service providing method in a mobile communication system. The method of claim 17, wherein the mobile terminal, And generating a registration message at a predetermined time period when the broadcast service is continuously requested, and transmitting the registration message to the base station controller of the system. The method of claim 13 or 18, wherein the base station controller, And providing the received time information when the registration message is received to the first packet data service node managing the profile of the mobile terminal through a packet control unit. . The method of claim 19, The first packet data service node managing the user profile further comprises the step of performing the charging using the reception time information received from the base station controller. The method of claim 13, wherein the first packet data service node, And a broadcast service identifier when selecting the second packet data service node. The method of claim 21, wherein the first packet data service node, And selecting the second packet data service node by modularly calculating the broadcast service identifier by the number of packet data service nodes.