KR20090013330A - Method and system for providing broadcast/multicast service in case of r-p connection fail between master packet controller and data service node - Google Patents

Abstract

A method and a system for providing a broadcast/multicast service to a broadcasting service controller in the case of R-P connection failure between a master packet controller and a data service node are provided to enable a master packet controller to supply a broadcasting service continuously despite the failure when setting up R-P connection. A communication unit(400) communicates with each base station management sever, and a broadcasting schedule management unit(410) transmits broadcasting scheduling information and a broadcasting start message to the base station management sever. An R-P connection checking unit(420) judges whether R-P connection succeeds or fails by using a route setting response message transferred from the base station management sever. When receiving a broadcasting service type change request signal from the R-P connection checking unit, a broadcasting service type changing unit(430) changes a global type broadcasting service into a local type broadcasting service and request a local broadcasting request signal from the base station management sever. When receiving a signal, which request the output of an R-P connection failure alarm message, from the R-P connection checking unit, an output unit(440) outputs an alarm message.

Description

Method and System for providing broadcast / Multicast Service in case of R-P connection fail between master packet controller and data service node}

The present invention provides a broadcast / multicast when a RP connection between a master packet controller and a data service node fails to provide a global type broadcast service. The present invention relates to a method and a system for providing a cast service.

Recently, the media environment, which has been divided into communication and broadcasting, has tended to converge at a rapid speed based on the development of information and communication technologies such as digitization of multimedia contents, digitization of networks, and broadband. The convergence of telecommunications and broadcasting is a phenomenon in which each division becomes ambiguous as each service provider can easily provide additional services beyond the existing business area. Such services are called convergence services. In other words, telecommunication operators seek to provide convergence services in order to provide multimedia contents with higher added value, and broadcasters provide two-way services beyond the limitations of existing one-way broadcasting services in addition to providing communication services through a broadcasting network. have.

The broadcasting service currently in use in the mobile communication network is to provide a broadcasting service regardless of the number of customers while minimizing the network resources required by the broadcasting service by setting up a channel for a separate broadcasting service. BCMCS (Broadcast / Multicast Service) Broadcast service, MBMS broadcast service and the like.

Hereinafter, the BCMCS will be described.

BCMCS (Broadcast / Multicast Service) is a service that provides the same information (multimedia including streaming, text message, voice, etc.) to multiple users through one link, and eliminates repeated transmission of the same information in a wireless section. .

In addition, BCMCS enables all base stations to broadcast simultaneously with the same contents according to the characteristics of the mobile communication network, and each base station can broadcast with separate contents according to a special environment and setting of each region.

In other words, BCMCS supports soft-combining between cells. Soft-combining is similar to soft handoff. The packet is simultaneously transmitted from different cells (sectors of the base station sector). This algorithm obtains Diversity Gain by combining.

In order to support the soft combining function, the same packet must be transmitted from all base stations at the same time. For this purpose, each base station needs to know timing information for transmitting the corresponding packet.

Hereinafter, a conventional BCMCS will be described with reference to the accompanying drawings.

1 is a conceptual diagram illustrating a conventional global type broadcast service, and FIG. 2 is a flowchart illustrating a content transmission method for a conventional global type broadcast service.

1 and 2, the broadcast service controller 100 transmits broadcast scheduling information to each base station management server (110a, 110b, ...., 110n) (S100). Each base station management server is associated with one master packet controller 120a and one or more slave packet controllers 120b,..., 120n, respectively.

Each base station management server (110a, 110b, ... ,, 110n) is a packet controller (120a, 120b, ... ,, 120n) that is linked to the broadcast scheduling information transmitted from the broadcast service controller 100, respectively It transmits to each AN node (that is, the base station controller and the base station) 130a, 130b, ...., 130n (S102).

Then, when the broadcast service controller (BCMCS controller) 100 transmits a broadcast start message to each base station management server (110a, 110b, ...., 110n) before a broadcast start time, each base station management server (110a, 110b, ..., and 110n allow the broadcast start message to be transmitted to the base station controller and the base station via the packet controllers 120a, 120b, ..., and 120n, respectively.

Then, the base station controller interworking with the master packet controller 120a transmits a route request signal to the master packet controller 120a, and the master packet controller 120a establishes a path with the data service node 140. Set a path with the access network 130a.

That is, when a broadcast start message is received from the base station management server 110a, 110b, ...., 110n, the access network 130a, 130b, ...., 130n performs a traffic path setup, and at this time, a master packet Open the controller 120a and the data service node section (RP Connection) first, and then down the path (master and slave packet controllers 120a, 120b, master and slave packet controllers 120a, 120b, ...., 120n). ..., 120n), and connection networks 130a, 130b, ...., 130n).

After the path is set as described above, when the broadcast time arrives, the broadcast server 150 transmits the corresponding content to the master packet controller 120a through the data service node 140.

Then, the master packet controller 120a transmits the transmitted content to each slave packet controller 120b, ..., 120n, and the master packet controller 102a and each slave packet controller 120b. 120n) broadcasts the corresponding content through the base station controller and the base station.

A method of broadcasting content to a mobile communication terminal by a content server as described above will be described in detail with reference to FIG. 2.

2, the broadcast server transmits content to the master packet controller through the data service node (S200). That is, since the data service node is routed only with the master packet controller, the content transmitted from the broadcast server is transmitted to the master packet controller.

When step 200 is performed, the master packet controller calculates timing for soft combining (S202), and transmits the content including the calculated timing information to each slave packet controller (S204).

That is, since the delay time information for each base station is registered in the master packet controller, the timing using the delay time information for each base station is calculated. The master packet controller then transmits the content including the calculated timing information to each slave packet controller.

When step 204 is performed, the slave packet controller and the master packet controller transmit content information including the timing information to the base station through the base station controller, respectively (S206).

Then, each base station broadcasts the content to the cell area by using the timing information included in the content information (S208). The BCMCS terminal then receives the broadcasted content at the base station.

In the case of the service supporting soft combining as described above, the opening of the RP connection with the data service node is only a designated master packet controller, and the other slave packet controllers can access contents from the upper level through the master packet controller. You will receive.

However, in the conventional BCMCS as described above, if there is no duplication function for the master packet controller, the master packet controller does not receive any content from the upper level when there is a problem in setting up the RP connection. There is.

In addition, a method for informing a broadcast service controller of an R-P connection failure should be provided, but there is no such method in the current interworking standard.

In addition, according to the interworking standard of the base station management server and the broadcast service control period, there is no message for informing the broadcast service controller of the state of the access network, and when a new message is created to inform the state, the entire interworking standard needs to be changed.

An object of the present invention is to broadcast / multicast upon failure of an RP connection between a master packet controller and a data service node, which can notify a broadcast service controller that manages a broadcast schedule immediately when an RP connection fails between a master packet controller and a data service node. It is to provide a service providing method and system.

Another object of the present invention is a method and system for providing a broadcast / multicast service upon failure of an RP connection between a master packet controller and a data service node, which may continue to provide a broadcast service even when a problem occurs when a master packet controller establishes an RP connection. To provide.

It is still another object of the present invention to broadcast when a RP connection fails between a master packet controller and a data service node capable of informing a broadcast service controller of information on a failure in establishing an RP connection without changing a base station management server and a broadcast service control period interworking standard. To provide a multicast service providing method and system.

According to an aspect of the present invention to achieve the above object, a base station and a base station controller for providing a broadcast service to a communication terminal, one master packet controller and at least one slave packet controller connected to the base station controller, the master and slave packets The master packet controller and the data service node when providing a global type of broadcast service in a system including a base station management server connected to a controller, a broadcast server connected through a data service node connected to the master or slave packet controller, and a broadcast service controller. 1. A method for providing a broadcast / multicast service when a RP connection fails between a service, comprising: (a) when a broadcast start message is received from the base station management server in the master packet controller; Set a path with a station controller / base station, transmit the path setting result information to the base station management server, and (b) send a path setting response message according to the path setting result information transmitted from the master packet controller at the base station management server. Generate and transmit to the broadcast service controller, and (c) if the RP connection is failed by determining whether the RP connection is successful by using the path setting response message transmitted from the base station management server in the broadcast service controller, the global type broadcast Provided is a method for providing a broadcast / multicast service when an RP connection fails between a master packet controller and a data service node, wherein the service is changed to a local type.

The routing result information includes R-P connection success information or R-P connection failure information, and the path setting response message is generated using a broadcast start message transmitted from the broadcast service controller.

In the step (b), it is determined whether the route setting result information transmitted from the master packet controller is RP connection success information or RP connection failure information, and if the determination result path setting result information is RP connection success information, the broadcast start message. And generating and transmitting a path setting response message corresponding to the RP connection failure information, and generating and transmitting a path setting response message in which a value of a predetermined field in the broadcast start message is changed.

In the step (c), the predetermined schedule field value of the path setting response message is compared with the preset schedule field value of the broadcast start message to determine whether the value corresponds, and if the value does not correspond, The broadcast service of the global type is changed to the local type by determining that the RP connection has failed.

According to another aspect of the present invention, a base station and base station controller for providing a broadcast service to a communication terminal, one master packet controller and at least one slave packet controller connected to the base station controller, and base station management connected to the master and slave packet controller, respectively Broadcast when a RP connection fails between the master packet controller and the data service node when providing a global type of broadcast service in a system including a broadcast server and a broadcast service controller connected through a server, a data service node connected to the master or slave packet controller. A method for providing a cast / multicast service, the method comprising: (a) when a broadcast start message is received from the base station management server in the master packet controller, a path between the data service node and a base station controller / base station is determined; Determine, and transmit the path setting result information to the base station management server, and (b) generate and transmit a path setting response message to the broadcast service controller according to the path setting result information transmitted from the master packet controller in the base station management server. (c) If it is determined that the RP connection is failed by determining whether the RP connection is successful by using the path setting response message transmitted from the base station management server, the broadcast service controller changes the global type of broadcast service to a local type, The local broadcast setting request signal is transmitted to each base station management server connected to the slave packet controller, and (d) the local broadcast setting request signal is transmitted to the access network through the slave packet controller linked to each base station management server. The packet controller establishes an RP connection with the data service node, respectively. And (e) providing the broadcast / multicast service when the RP connection fails between the master packet controller and the data service node, wherein the content transmitted from the broadcasting server is transmitted to the communication terminal of the corresponding area through the set path. A method is provided.

According to another aspect of the present invention, a broadcast service controller for providing a broadcast / multicast service when the RP connection failure between the master packet controller and the data service node when providing a global type of broadcast service, each base station management server RP connection success by determining whether the RP connection is successful by using a communication unit for communication with the base station, a broadcast schedule management unit for transmitting broadcast scheduling information, and a broadcast start message to each base station management server and a route setting response message transmitted from the base station management server. If a broadcast service type change request signal is received from the RP connection success determination unit, a broadcast service for changing a global type broadcast service to a local type and then transmitting a local broadcast setting request signal to each base station management server. Type change unit and the RP connection success When the R-P connection failure alarm message output request signal is received from the sub-determination unit, the broadcast service controller includes an output unit for outputting an alarm message.

The RP connection determination unit determines whether the schedule field in the path setting response message transmitted from the base station management server corresponds to a value of the constant field in the broadcast start message, and if the predetermined field value corresponds, the RP If it is determined that the connection is successful, and if it does not correspond to the RP connection failure, the broadcast service type change request signal is transmitted to the broadcast service type change unit.

According to another aspect of the present invention, a base station and a base station controller for providing a broadcast service to a communication terminal, one master packet controller connected to the base station controller and at least one slave packet controller, data service connected to the master or slave packet controller A system for providing a broadcast / multicast service when an RP connection fails between the master packet controller and the data service node when providing a global type broadcast service including a broadcast server connected through a node, wherein the master and slave packets are provided. A base station management server connected to a controller and generating route setting response messages according to the received route setting result information, when route setting result information is received from the master packet controller, a path transmitted from the base station management server RP between the master packet controller and the data service node, characterized in that it comprises a broadcast service controller for determining whether the RP connection has failed by using the configuration response message and determining that the RP connection has failed. In case of a connection failure, a broadcast / multicast service providing system is provided.

The base station management server determines whether the path setting result information transmitted from the master packet controller is RP connection success information or RP connection failure information, and if the determination result path setting result information is RP connection success information, it corresponds to the broadcast start message. It generates and transmits a routing setup response message, and generates and transmits a routing setup response message in which a value of a predetermined field in the broadcast start message is changed in case of RP connection failure information.

The broadcast service controller compares a predetermined constant field value of the routing response message with a preset constant field value of the broadcast start message, and if the value does not correspond, determines that the RP connection has failed and localizes the global type broadcast service. After changing the type, the local broadcast setup request signal is transmitted to each base station management server connected to each slave packet controller.

As described above, according to the present invention, if a problem occurs when setting up an RP connection between a master packet controller and a data service node, a broadcast service of a local type is provided, thereby preventing the interruption of the broadcast service even when the RP connection fails. A method and system for providing a broadcast / multicast service when a RP connection fails between a master packet controller and a data service node can be provided.

In addition, a broadcast / multicast service when an RP connection fails between a master packet controller and a data service node capable of informing a broadcast service controller of information on a failure of establishing an RP connection without changing the interworking standard between the base station management server and the broadcast service control period. Providing a method and system can be provided.

Details of the above-described objects and technical configurations of the present invention and the effects thereof according to the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

3 is a diagram illustrating a system for providing a broadcast / multicast service according to the present invention.

Referring to FIG. 3, the broadcast / multicast service providing system wirelessly connects to a communication terminal 300 to control a base station 310 providing a mobile communication service, a wireless link and a wired link of the base station 310, It is connected to the base station controller 320 and the packet controller 330, the packet controller 330 to control the handover for maintaining the continuity of the call even when the user of the communication terminal 300, the base station 310 And a base station manager (BSM) server 340, a data service node 350, a broadcast service controller (BCMCS controller) 360, and a broadcast server, which perform operation and maintenance functions of the base station controller 320. (BCMCS server) 370.

The communication terminal 300 is a terminal that receives a broadcast overhead message transmitted through a wireless communication network and receives a broadcast / multicast service. The broadcast overhead message may refer to broadcast scheduling information provided by the broadcast service controller 360. The broadcast scheduling information includes broadcast data amount, broadcast time, and the like.

The base station 310 is arranged in units of cells, and performs baseband signal processing, wired / wireless conversion, and transmission and reception of wireless signals.

The base station controller 320 controls and manages the base station 300, and allocates and releases radio channels for the communication terminal, transmit power control of the communication terminal and the base station, inter-cell handoff, transcoding and vocoding, and for the base station. Perform functions such as operation and maintenance.

The packet controller 330 controls packet data (content) transmitted and received to the base station controller 320.

The packet controller 330 is composed of one master packet controller and one or more slave packet controllers. Therefore, when the BCMCS is a global type, only one master packet controller receives content transmitted from the broadcast server 370, and then calculates timing information to obtain content information including the calculated timing information. It is sent to one or more slave packet controllers.

That is, when the BCMCS is a global type, only the master packet controller sets a path with the data service node 350 and then sets a path with the base station controller / base station 320 or 310. Then, when the content is received from the broadcast server 370 through the set path, the master packet controller calculates a timing for soft combining, and then transmits the content including the calculated timing information to each slave packet controller. do.

Here, the soft-combining is a concept similar to the soft handoff, in which a scheme for combining content received from other base stations in a terminal chip is used. It should be transmitted at the same time, and for this purpose, one master packet controller calculates a transmission timing (Timing) of content to be transmitted from another slave packet controller and transmits the content to each slave packet controller.

Then, each slave packet controller transmits the received content information to the base station 310 through the base station controller 320, and each base station 310 broadcasts the corresponding content according to the timing information included in the content information. .

That is, when the BCMCS is a global type, the traffic path for receiving content from the broadcast server 370 is connected to only one master packet controller, not to all packet controllers. For soft combining between the slave packet controllers, a transmission timing for transmitting corresponding content to each slave packet controller is calculated, and the calculated timing information is included in the content received from the broadcast server 370 and transmitted to each slave packet controller. .

When the BCMCS is a global type as described above, the traffic path from the data service node 350 is unified to the master packet controller. The reason why the traffic path with the data service node 350 is unified to the master packet controller is that one packet controller must calculate timing information in order to support soft combining. This is because sync can be synchronized with content transmitted from.

If it does not support soft combining, that is, the BCMCS is a local type, traffic paths (R-P connections) are established between all packet controllers and the data service node 350, respectively.

Since a detailed description of the content transmission method when the BCMCS is a global type has been described with reference to FIGS. 1 and 2, the description thereof will be omitted.

In addition, if the BCMCS is a local type, the master packet controller and the slave packet controller are not separated from each other, but each packet controller 330 sets a traffic path for content reception, and transmits the traffic path from the broadcast server 370 through the set path. Each of the received contents is transmitted to the base station controller 320 and the base station 310.

That is, the master packet controller and the slave packet controller establish a path (R-P connection) with the data service node 350 and then set a path with the base station controller / base station 320 or 310.

Then, each packet controller 330 receives the contents from the broadcast server 370 through each set path and transmits the contents to each base station controller 320, and each base station controller 320 transmits the corresponding contents to each base station 310. To transmit. Each base station 310 then broadcasts the corresponding content.

A detailed description of the case where the BCMCS is changed to the local type as described above will be described with reference to FIGS. 8 and 9.

The base station management server 340 manages system parameters of the base station and base station controllers 310 and 320, and performs a function of periodically measuring operating states of the base station and base station controllers 310 and 320.

In addition, when the broadcast scheduling information and the broadcast start message are received from the broadcast service controller 360, the base station management server 340 transmits the received broadcast scheduling information and the broadcast start message to the packet controller 330 to control the base station controller. And base stations 320 and 310.

In addition, when the BCMCS is a global type, the base station management server 340 generates a path setting response message according to a path setting result transmitted after the master packet controller establishes a path (RP connection) between the data service nodes 350. To the broadcast service controller 360.

That is, when an R-P connection failure occurs, the base station management server 340 generates a path setup response message informing the broadcast service controller 360 of the failure of the R-P connection, and transmits it to the broadcast service controller 360. A detailed description of the routing response message will be made with reference to FIGS. 6 and 7.

The data service node 350 supports an internet protocol for supporting a broadcast / multicast service and transmits and receives broadcast / multicast messages.

The data service node 350 performing the above role includes, for example, an interworking function (IWF) in the second generation network, and a packet data service node (PDSN) and a packet data gateway in the third generation network. In the case of the WCDMA network and the HSDPA network, the server may include a Serving GPRS Support Node (SGSN) and a Gateway GPRS Support Node (GGSN).

The broadcast service controller 360 determines whether the path (RP connection) establishment between the master packet controller and the data service node 350 is successful by using the path setting response message transmitted from the base station management server 340, and determines the determination. Result If the path setup between the master packet controller and the data service node 350 fails, the global type broadcast service is changed to the local type.

That is, the broadcast service controller 360 determines whether a predetermined constant field value in the path setting response message transmitted from the base station management server 340 corresponds to a predetermined field value in the broadcast start message. If the predetermined field value in the path setting response message does not correspond to the predetermined field value in the broadcast start message, the broadcast service controller 360 determines that the RP connection has failed and changes the global type broadcast service to the local type. do.

In addition, the broadcast service controller 360 transmits broadcast scheduling information to each base station management server 340, and transmits a broadcast start message to each base station management server 340 before a broadcast start time. The path between the data service node 350, the packet controller 330, the base station controller 320, and the base station 310 for content transmission is set by the broadcast start message.

A detailed description of the broadcast service controller 360 that performs the above role will be described with reference to FIG. 4.

The broadcast server 370 receives content data from a content provider and generates a broadcast message including a time field in which the content data is to be broadcast.

In addition, after generating the broadcast message, the broadcast server 370 determines whether the current time is included in the range of the time field included in the broadcast message, and only when the current time is included in the range of the time field. The broadcast message is broadcast to several data service nodes 350.

Through this process, subscribers can provide services when they need information.

In addition, the broadcast server 370 finally converts the BCMCS contents into an IP-based multicast stream and transmits the BCMCS contents to the data service node using a multicast transmission scheme. The multicast transmission scheme is a transmission scheme for simultaneously serving a single stream to a plurality of clients, and is a data transmission scheme suitable for a broadcast service capable of reducing I / O and network bandwidth of a server.

4 is a block diagram schematically illustrating a configuration of a broadcast service controller for providing a broadcast service even when an R-P connection of a master packet controller according to the present invention fails.

Referring to FIG. 4, the broadcast service controller for providing a broadcast service even when the master packet controller fails in the RP connection may include a communication unit 400, a broadcast schedule manager 410, and a successful RP connection for communication with a base station management server. The determination unit 420 includes a broadcast service type change unit 430 and an output unit 440.

The broadcast schedule manager 410 transmits broadcast scheduling information and a broadcast start message to each base station management server.

The R-P connection success determination unit 420 determines whether the R-P connection is successful by using a path setting response message transmitted from the base station management server.

That is, the RP connection determination unit 420 examines a predetermined field (for example, seq_num field) in the path setting response message transmitted from the base station management server to determine whether it corresponds to the value of the predetermined field in the broadcast start message. do.

If the predetermined field value (seq_num field) is equal to the result of the determination, the RP connection success determination unit determines that the RP connection between the master packet controller and the data service node has been normally performed, and if not, the RP connection has failed. The service type change unit 430 transmits a broadcast service type change request signal.

That is, if the RP connection between the master packet controller and the data service node fails, the global type broadcast service cannot be provided, and thus, the RP connection determination unit determines whether each slave packet controller can independently establish a traffic path with the data service node. 420 generates a broadcast service type change request signal for changing a global type broadcast service to a local type and transmits the generated broadcast service type change request signal to the broadcast service type change unit 430.

When the broadcast service type change request signal is received from the RP connection determination unit 420, the broadcast service type change unit 430 changes the global service set to a local type by default and manages each base station. The local broadcast setup request signal is transmitted to the server. The local broadcast setup request signal may be a signal for each packet controller to set a path with a data service node for content reception.

That is, when the broadcast service type change request signal is received from the RP connection success determination unit 420 because the global type broadcast service is set as the default in the broadcast service type change unit 430, the global type is changed to the local type broadcast service. Change to to transmit the local broadcast setting request signal to each base station management server.

Each base station management server receiving the local broadcast setting request signal transmits a local broadcast setting request signal to a packet controller, a base station controller, and a base station to inform that a broadcast service type has been changed to a local type, and sets a path for receiving content, respectively. Be sure to

 The output unit 440 outputs an alarm message when the alarm message output request signal indicating the failure of the R-P connection is received from the R-P connection success determination unit 420. The output unit 440 may be an apparatus for outputting an audio or video.

5 is a flowchart illustrating a broadcast service providing method when an RP connection between a master packet controller and a data service node fails according to the present invention, and FIG. 6 is a path when a successful RP connection between a master packet controller and a data service node according to the present invention is performed. 7 is a diagram illustrating the structure of a configuration response message, FIG. 7 is a diagram illustrating a structure of a routing response message when an RP connection fails between a master packet controller and a data service node according to the present invention.

Referring to FIG. 5, the broadcast service controller transmits broadcast scheduling information to each base station management server (S500). Each base station management server is associated with one master packet controller and one or more slave packet controllers, respectively.

When step 500 is performed, the base station management server transmits the broadcast scheduling information transmitted from the broadcast service controller to each base station controller / base station through a packet controller that is linked to each other (S502).

Then, when the broadcast service controller transmits a broadcast start message to each base station management server before a predetermined time (S504), each base station management server transmits a broadcast start message to the base station controller and the base station through the packet controller, respectively ( S506).

When step 506 is performed, the base station controller interworking with the master packet controller transmits a path setting request signal to the master packet controller (S508), and the master packet controller sets a path with the data service node, and then access network (base station). A path between the controller and the base station is set (S510).

That is, when a broadcast start message is received from the base station management server, the access network performs a traffic path setup. At this time, the master packet controller and the data service node section (RP connection) are opened first, and then the path down from the master and slave packet controllers. Setup (master and slave packet controllers, access networks).

After performing step 510, the master packet controller transmits route setting result information to the base station management server (S512). The path establishment result information may refer to a path establishment result (R-P connection establishment result) (eg, R-P connection success or R-P connection failure) with the data service node.

When step 512 is performed, the base station management server generates a path setting response message according to the received path setting result information and transmits it to the broadcast service controller (S514). At this time, the base station management server generates a path setup response message using the broadcast start message received from the broadcast service controller.

That is, if the received path setting result information indicates the R-P connection success, the base station management server generates a path setting response message as shown in FIG. 6 and transmits it to the broadcast service controller.

In other words, when the path setting result information transmitted from the master packet controller indicates RP connection success, the base station management server broadcasts a value of a certain field, that is, a Seq-num field, in a broadcast start message transmitted from the broadcast service controller. A routing setup response message as shown in FIG. 6 is generated and transmitted using the value received from the service controller. The generated route setting response message may be the same as the broadcast start message.

If the path setting result information transmitted from the master packet controller indicates an RP connection failure, the base station management server sets a value of a certain field, that is, a Seq-num field, in the broadcast start message transmitted from the broadcast service controller to '0'. The path setting response message as shown in FIG. 7 changed to FIG. 7 is generated and transmitted.

When step 514 is performed, the broadcast service controller determines whether the predetermined schedule field value of the path setting response message transmitted from the base station management server is changed by comparing the predetermined schedule field value of the broadcast start message (S516).

That is, the broadcast service controller examines the value of the Seq-num field in the routing response message to determine whether the R-P connection is successful between the master packet controller for providing the global type broadcast service and the data service node.

If the predetermined field value of the path establishment response message is changed as the determination result of step 516, the broadcast service controller considers the R-P connection failure to change the global type broadcast service to the local type (S518).

In this case, the broadcast service controller transmits a local broadcast setting request signal to each base station management server to set a global type broadcast service as a local type.

A detailed description of how a global type broadcast service is changed to a local type according to the local broadcast setting request signal will be described with reference to FIGS. 8 and 9.

Since the broadcast service controller defaults to the global type, if the RP connection between the master packet controller and the data service node fails, the broadcast service controller cannot provide a global type broadcast service, and thus each slave packet controller for continuous broadcast service provision. Are respectively connected to the data service node and change to a local type that provides a broadcast service.

If the broadcast service type is changed to local as described above, the system performs a local broadcast service.

In other words, if the traffic path (R-P connection) between the master packet controller and the data service node is not properly set, the only path that can receive the content from the upper level is blocked, so that the service may be interrupted.

Accordingly, the broadcast service controller determines whether the path setting is normally performed to prevent such service interruption, and if not, changes the broadcast service of the global type to the local type.

 8 is a conceptual diagram illustrating a local type broadcast service according to the present invention, and FIG. 9 is a flowchart illustrating a method for providing a local type broadcast service according to the present invention.

8 and 9, when the broadcast service type is changed from the global type to the local type, the broadcast service controller transmits a local broadcast setting request signal to each base station management server to change the broadcast service type from the local type to the local type ( S800).

Then, each base station management server transmits a local broadcast setting request signal to the base station through the interworking packet controller and the base station controller (S802). Then, each base station management server, packet controller, base station controller, and base station update broadcast type information with local broadcast.

When step 802 is performed, each base station controller transmits a path setting request signal to the interworking packet controller (S804), and each packet controller sets a path with the data service node (S806), and then through the base station controller And to set the path (S808).

Preferably, each packet controller sets a path with the data service node, and a path between the base station controller and the base station is set at the time of performing the global type broadcast service. Therefore, the path between the base station controller and the base station does not need to be set.

After performing step 808, the broadcast server transmits the corresponding content to the corresponding communication terminal through the set path (S814).

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not as restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The present invention described above provides a local type of broadcast service even when an RP connection fails to provide a broadcast service to a mobile communication terminal to prevent interruption of the broadcast service. Can be.

1 is a conceptual diagram illustrating a conventional global type broadcast service.

2 is a flowchart illustrating a content transmission method for a conventional global type broadcast service.

3 illustrates a system for providing broadcast / multicast services in accordance with the present invention.

4 is a block diagram schematically illustrating a configuration of a broadcast service controller for providing a broadcast service even when an R-P connection fails in a master packet controller according to the present invention.

5 is a flowchart illustrating a broadcast service providing method when a failure occurs of a base station management server interworking with a master packet controller according to the present invention.

5 is a flowchart illustrating a broadcast service providing method when an R-P connection fails between a master packet controller and a data service node according to the present invention;

6 is a diagram illustrating a structure of a route response message upon successful R-P connection between a master packet controller and a data service node according to the present invention;

7 is a diagram illustrating a structure of a route response message when an R-P connection fails between a master packet controller and a data service node according to the present invention;

8 is a conceptual diagram illustrating a local type broadcast service according to the present invention.

9 is a flowchart illustrating a method for providing a local type broadcast service according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 360, 700: broadcast service controller 110, 340, 710: base station management server

120, 330, 720: Packet controller 130, 730: access network

140, 350, 740: data service nodes 150, 370, 750: broadcast server

300: communication terminal 310: base station

320: base station controller 400: communication unit

410: broadcast schedule management unit 420: R-P connection success determination unit

430: broadcast service type change unit 440: output unit

Claims (12)

A base station and a base station controller for providing a broadcast service to a communication terminal, one master packet controller and at least one slave packet controller connected to the base station controller, a base station management server connected to the master and slave packet controller, respectively, the master or slave packet controller Providing a broadcast / multicast service upon failure of an RP connection between the master packet controller and the data service node in providing a global type of broadcast service in a system including a broadcast server and a broadcast service controller connected through a data service node connected to the data service node. In the method for (a) if a broadcast start message is received from the base station management server in the master packet controller, setting a path between the data service node and a base station controller / base station and transmitting path setting result information to the base station management server; (b) generating, by the base station management server, a path setting response message according to path setting result information transmitted from the master packet controller and transmitting the generated path setting response message to the broadcast service controller; and (c) when the broadcast service controller determines that the R-P connection is unsuccessful by determining whether the R-P connection is successful by using the path setting response message transmitted from the base station management server, changing the global type of broadcast service to the local type; Method of providing a broadcast / multicast service when the R-P connection failure between the master packet controller and the data service node comprising a. The method of claim 1, The route setting result information includes R-P connection success information or R-P connection failure information. When a R-P connection failure between a master packet controller and a data service node is provided, the broadcast / multicast service providing method. The method of claim 1, The routing response message is generated using a broadcast start message transmitted from the broadcast service controller. The method of providing a broadcast / multicast service when an R-P connection fails between a master packet controller and a data service node. The method of claim 1, In step (b), Determining whether the path establishment result information transmitted from the master packet controller is R-P connection success information or R-P connection failure information; If the determination result path setting result information is RP connection success information, the path setting response message corresponding to the broadcast start message is generated and transmitted; if the RP connection failure information, the path setting response is changed by changing a value of a certain field in the broadcast start message. Generating and transmitting a message, wherein the RP connection fails between the master packet controller and the data service node. The method of claim 1, Step (c) is, Comparing a predetermined schedule field value of the routing response message with a preset schedule field value of the broadcast start message and determining whether the value corresponds; If it is determined that the value does not correspond, determining that the RP connection has failed, and changing the broadcast service of the global type to the local type. How to provide multicast service. A base station and a base station controller for providing a broadcast service to a communication terminal, one master packet controller and at least one slave packet controller connected to the base station controller, a base station management server connected to the master and slave packet controller, respectively, the master or slave packet controller Providing a broadcast / multicast service upon failure of an RP connection between the master packet controller and the data service node in providing a global type of broadcast service in a system including a broadcast server and a broadcast service controller connected through a data service node connected to the data service node. In the method for (a) if a broadcast start message is received from the base station management server in the master packet controller, setting a path between the data service node and a base station controller / base station and transmitting path setting result information to the base station management server; ; (b) generating, by the base station management server, a path setting response message according to path setting result information transmitted from the master packet controller and transmitting the generated path setting response message to the broadcast service controller; (c) If it is determined that the RP connection is failed by determining whether the RP connection is successful by using the path setting response message transmitted from the base station management server, the broadcast service controller changes the global type of broadcast service to a local type, and transmits each slave packet. Transmitting a local broadcast setting request signal to each base station management server connected to the controller; (d) allowing each base station management server to transmit a local broadcast setup request signal to an access network through an associated slave packet controller, wherein each slave packet controller establishes an R-P connection with each data service node; and (e) causing the content transmitted from the broadcasting server to be transmitted to the communication terminal of the corresponding area through the set path; Method of providing a broadcast / multicast service when the R-P connection failure between the master packet controller and the data service node comprising a. A broadcast service controller for providing a broadcast / multicast service when an R-P connection between the master packet controller and the data service node fails when providing a global type broadcast service, A communication unit for communicating with each base station management server; A broadcast schedule manager configured to transmit broadcast scheduling information and a broadcast start message to each base station management server; An R-P connection success determination unit determining whether the R-P connection is successful by using a path setting response message transmitted from the base station management server; A broadcast service type change unit for changing a global service type to a local type and transmitting a local broadcast setting request signal to each base station management server when a broadcast service type change request signal is received from the RP connection determination unit; And An output unit for outputting an alarm message when an R-P connection failure alarm message output request signal is received from the R-P connection success determination unit; Broadcast service controller comprising a. The method of claim 7, wherein The RP connection determination unit determines whether the schedule field in the path setting response message transmitted from the base station management server corresponds to a value of the constant field in the broadcast start message, and if the predetermined field value corresponds, the RP And determining that the connection is successful, and if not, determine that the RP connection has failed, and transmits a broadcast service type change request signal to the broadcast service type change unit. A base station and a base station controller providing a broadcast service to a communication terminal, one master packet controller connected to the base station controller and at least one slave packet controller, and a broadcast server connected through a data service node connected to the master or slave packet controller. In the system for providing a broadcast / multicast service when the RP connection failure between the master packet controller and the data service node when providing a global type broadcast service, A base station management server connected to the master and slave packet controllers, respectively, and configured to generate a routing response message according to the received routing result information when the routing result information is received from the master packet controller; and A broadcast service controller for determining whether the R-P connection is failed by determining whether the R-P connection is successful by using the path setting response message transmitted from the base station management server. System for providing a broadcast / multicast service when the R-P connection failure between the master packet controller and the data service node comprising a. The method of claim 9, The base station management server determines whether the path setting result information transmitted from the master packet controller is RP connection success information or RP connection failure information, and if the determination result path setting result information is RP connection success information, it corresponds to the broadcast start message. RP between the master packet controller and the data service node, wherein the RP connection failure message is generated and transmitted, and if the RP connection failure information is generated, the RP connection message is generated and transmitted by changing a value of a predetermined field in the broadcast start message. Broadcast / multicast service providing system in case of connection failure. The method of claim 9, The broadcast service controller compares a predetermined constant field value of the routing response message with a preset constant field value of the broadcast start message, and if the value does not correspond, determines that the RP connection has failed and localizes the global type broadcast service. And a local broadcast setting request signal to each base station management server connected to each slave packet controller after changing to a type, when a RP connection fails between a master packet controller and a data service node. The method of claim 11, Each base station management server receiving the local broadcast setting request signal transmits a local broadcast setting request signal to an access network through an interlocked slave packet controller, and then sets each RP connection with the data service node. And a broadcast / multicast service providing system upon failure of an RP connection between a master packet controller and a data service node.

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