KR100700605B1 - Broadcast? multicast service method and system in mobile communication - Google Patents

Abstract

 The present invention enables the clients participating in the service to check the status of other clients in real time through the broadcast / multicast service, thereby increasing the efficiency of the service. Unnecessary waste of resources in the system can be greatly reduced.

The present invention provides a broadcast / multicast service system for mobile communication, comprising: a server system for transmitting status information of clients participating in a specific service together with contents of the service to its service area; And a client that receives the client status information and the content of the service and provides the same to the user.

Broadcast Service, Multicast Service, Presence Information

Description

BROADCAST / MULTICAST SERVICE METHOD AND SYSTEM IN MOBILE COMMUNICATION

1 is a block diagram of a general broadcast / multicast service system.

2 is a block diagram of a broadcast / multicast service system according to the present invention;

3 illustrates signaling paths and interfaces between system entities that form the present invention.

4 is a signal flow diagram of a broadcast / multicast service system according to the present invention;

*** Explanation of symbols for main parts of drawing ***

10: broadcast client 20: broadcast server

30: Presence Server 40: Content Provider

50: SIP / IP core

The present invention relates to a mobile communication system, and more particularly, to a broadcast / multicast service system for mobile communication.

A broadcast / multicast service is a service that simultaneously provides over-the-air broadcasts and various additional information to multiple clients. It is a broadcast service that provides useful information to an unspecified number of users and only to clients who have subscribed to a certain service in advance. Refers to all multicast services.

The broadcast / multicast service can use the same information to multiple clients at the same time, so it can use network resources more efficiently and can provide more high bandwidth applications through efficient management of network resources. By providing various kinds of high-speed services based on this, it can meet various requirements of clients. The client selects and receives only a desired service from among various information provided from a service provider.

1 is a block diagram of a general broadcast / multicast service system.

As shown in FIG. 1, the conventional broadcast / multicast service system includes a broadcast client 10, a broadcast server 20, and a content provider 40.

The content provider 40 is an entity that produces various contents for the broadcast / multicast service and provides them to the broadcast server 20.

The broadcast server 20 is a server providing a broadcast / multicast service to users who have received content from the content provider 40 and subscribed to the broadcast / multicast service, and used by the client 10. Manage and bill your billing on the basis of service.

The broadcast client 10 is an entity that performs a function of requesting and receiving a broadcast / multicast service in a user terminal.

The conventional broadcast / multicast service system of this configuration does not provide the user with status information of other clients participating in the service. The client status information is not provided even in a service for which prior consent for contents provision is required.

Among the services provided by the broadcast server, the multicast service is provided based on the characteristics of each broadcast client or a group centered on clients having similar preferences. Among these services, there are services that value status information of counterpart clients belonging to a group, such as a conference call service, a video conference service, and a game service.

For example, suppose that the video conferencing service is an example of receiving the appearance of a conference chair that each client participating in the group is currently speaking with. If the meeting chair knows who participated in the meeting and can hear the status and opinions of each client, the meeting will be more active.

However, since the multicast / broadcast service system according to the prior art does not provide status information of other clients participating in the conference, the conference service is performed without grasping the situation of the participating clients. As a result, this conventional technology has a problem of giving a voice to an absent client or requiring a specific action (eg, an answer).

The present invention is to solve the problems described above, the object is,

The present invention provides a broadcast / multicast service system and method for mobile communication that performs broadcast / multicast service using Presence information of users.

In order to achieve the above object, the present invention, the broadcast / multicast service system of mobile communication

A server system for transmitting the state information of clients participating in a specific service together with the contents of the service to its service area; And a client that receives the client status information and the content of the service and provides the same to the user.

Preferably, the server system is characterized in that for transmitting the client status information, if the client desires.

Preferably, the server system manages the status information of each client, and when the client status information changes, the presence server (Presence Server) for transmitting the changed status information to the broadcast server; The broadcast server receives status information of clients participating in a specific service from the presence server and transmits the received status information to its service area along with the contents of the service.

Preferably, the broadcast / multicast service system according to the present invention may further include a Session Initiation Protocol / Internet Protocol (SIP / IP) core that performs signaling between the presence server and the broadcast server.

Preferably, the broadcast / multicast service system according to the present invention is characterized in that it comprises a SIP-based interface for connecting between the presence server and the SIP / IP core.

In order to achieve the above object, the present invention, the broadcast / multicast service method of mobile communication

If the client is registered with a specific service, transmitting a list of clients participating in the service to a first server (precision server); Transmitting status information of clients included in the list managed by the first server to a second server (broadcast server); Transmitting the state information of the clients to the client together with the service contents of the second server; When the state information of the clients managed by the first server is changed, the changed state information is transmitted to the client.

Preferably, the client status information managed by the first server is delivered to the client at a predetermined time period.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

2 is a block diagram of a broadcast / multicast service system according to the present invention.

In order not to obscure the gist of the present invention, the same reference numerals are assigned to the same and the same components as those described above, and detailed description thereof will be omitted.

As shown in FIG. 2, the present invention includes a Presence server in an existing broadcast / multicast service system to provide status information of other subscribers participating in the service to a user who receives a certain service. Accordingly, the broadcast / multicast service system according to the present invention is a broadcast client (10, hereinafter referred to as BCAST client), broadcast server (20, hereinafter referred to as BCAST server), Presence server 30, and It is configured to include a content provider (Content Provider, 40).

The Presence server 30 is a server that manages the current status information (or status mode) of the registered client, and is an entity that manages real-time availability and status information of the client.

The BCAST server 20 receives the status information of specific clients from the presence server 30 and provides the client with the request for broadcast / multicast service. In the present invention, the BCAST server 20 manages and determines the current state of the user and whether the service is acceptable, and selectively provides the broadcast / multicast service only to clients that can receive the current service.

The BCAST client 10 temporarily blocks or reactivates the service according to the state of the target client by referring to the received state information of the clients. In addition, the BCAST server 20 notifies the BCAST server 20 of the time zone that the user wants to receive the service and requests to receive the service only in the corresponding time zone.

3 is a diagram illustrating a signal transmission path and an interface between system entities constituting the present invention.

As shown in FIG. 3, the BCAST server 20 according to the present invention is connected to the presence server 30 and receives real-time status information (presence information) of clients participating in the service from the presence server 30. It is provided to the BCAST client 10. The interfaces listed below (BCAST-1 to BCAST-5) are newly defined to implement the present invention, and are based on the Session Initiation Protocol (SIP).

BCAST-1: Interface to connect BCAST client 10 and SIP / IP

BCAST-2: Interface connecting SIP / IP core 50 and BCAST server 20.

BCAST-3: An interface connecting the BCAST client (10) and BCAST server (20).

BCAST-4: Interface for connecting BCAST server 20 and BCAST Remote N / W.

BCAST-5: Interface for connecting the SIP / IP core 50 and the Presence server 30.

In addition, in FIG. 3, the interface (PRS-1) connecting the Presence client and the SIP / IP core 50 and the interface (PRS-2) connecting the SIP / IP core 50 and the Presence server 30 are clients. Based on the presence information of the real-time.

A system that provides client status information (Presence system) is generally implemented using Session Initiation Protocol (SIP) or SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE), or by Wireless Village (WV) using WAP Push. Is implemented. The present invention is implemented by a SIP-based presence service considering an Internet Protocol (IP) -based broadcast service.

As such, the present invention provides the presence information (status information) of other clients participating in the service to the client participating in the specific service (for example, multiplayer game service, etc.) by interworking with the broadcast server and the presence server. At this time, each participating client can check presence information of other clients participating in the service, and thus can receive more efficient and high quality of service.

4 is a signal flow diagram of a broadcast / multicast service system according to the present invention, which shows a call flow between a BCAST client 10, a BCAST server 20, a SIP / IP core 50, and a presence server 30. will be.

Referring to Figure 4, the signal processing procedure and operation of the broadcast / multicast service system according to the present invention will be described.

First, the BCAST client 10 requests the service registration to the BCAST server 20 to subscribe itself to a specific service. (S10) The BCAST server 20 receiving the registration request of the BCAST client 10 is BCAST Return a response signal for approving or disallowing service subscription of the client 10 (S20).

When returning a response signal of the acknowledgment, the BCAST server 20 also asks the BCAST client 10 whether to receive the presence information of other clients participating in the service.

When the BCAST client 10 receives the response signal of the approval from the BCAST server 20, the BCAST client 10 determines whether to receive the status information of other clients. In addition, the BCAST server 20 informs the BCAST server 20 of its decision. (S30) In some cases, the BCAST server 20 does not obtain the consent of the BCAST client 10, and transmits the status information of other clients to the BCAST client 10. It can also be provided to. In this case, the process S30 is unnecessary.

In step S30, when the BCAST client 10 is informed that it will receive status information of other clients, the BCAST server 20 loads a list of clients participating in the service as a predetermined signal SUBSCRIBE. In addition, the SIP / IP core 50 transmits the SIP / IP core 50 to the Presence server 30 again. (S40 & S50)

The presence server 30 receiving the predetermined signal SUBSCRIBE returns an acknowledgment signal (eg, 200 OK signal) (S60 & S70), while referring to a list of clients included in the received signal SUBSCRIBE. By checking the latest status information of each client. Then, the latest status information of each of the identified clients is carried in a predetermined signal NOTIFY, and is transmitted to the BCAST server 20 through the SIP / IP core 50 (S80 & S90).

Upon receiving the predetermined signal NOTIFY, the BCAST server 20 returns a response (ACK) signal (eg, 200 OK signal) (S100 & S110). Thereafter, the latest status information of each client included in the received signal NOTIFY is transmitted to the BCAST client 10 together with the content of the service (S120).

As shown in Figure 4, once the Presence server 30 receives the client list through the reception signal (SUBSCRIBE), the Presence server 30 when the state change occurs in the clients listed in the list The changed state information (or update state information) is transmitted to the BCAST server 20 every time.

When the update status information is delivered to the BCAST server 20 or the type of data to be transmitted may vary depending on the configuration of the system.

That is, whenever the status information of the clients listed in the client list is updated, the updated status information may be transmitted, or the latest status information of the clients may be transmitted at regular intervals regardless of whether the status information of the clients is updated. In addition, the transmitted update information may include the state information of all the clients listed in the list, or may include only the information of the client that caused the actual state change.

The present invention is described in the light of a video conference service as follows.

Suppose that each client in a conference group is being forwarded with the chair of the conference that is currently speaking. If the meeting chair knows who participated in the meeting and can hear each participant's participation and opinions, the meeting will be more active.

Each client who participates in the meeting may, in some cases, obtain a voice and, conversely, may be away from the meeting or may be in a hurry to receive other communications. In this case, the present invention reports the client's status ('Away for a while', 'on a phone call', 'hope to announce', 'yes to agenda', 'opposite agenda') to the Presence server, and participates in the conference. To check the status information ('temporary away', 'call', 'hope to announce', 'yes to agenda', 'no agenda') reported to the Presence server. It can prevent the operation. Each client in the meeting can see at a glance the status of other clients in the meeting.

As described above, the present invention enables the clients participating in the service to check the status of other clients in real time through the broadcast / multicast service, thereby increasing the efficiency of the service. Unnecessary waste of resources in the system can be greatly reduced.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (25)

If any new client registers with a particular service of a second server that is participating in a plurality of other clients, the second server sends a list of the plurality of other clients participating in the particular service to the first server. Process; Transmitting, by the first server, status information of clients included in the list of the plurality of other clients managed by the first server to the second server; And transmitting, by the second server, the state information of the plurality of other clients to the arbitrary new client. The method of claim 1, wherein the second server      And transmitting the client status information if the client desires. The method of claim 1, wherein the client status information managed by the first server is      Broadcast / multicast service method of mobile communication, characterized in that delivered to the client at a predetermined time period. The method of claim 1, wherein the changed state information      Broadcast / multicast service method of mobile communication, characterized in that delivered to the client through the SIP / IP core and the broadcast server. The method of claim 1, wherein the signal transmission between the first server and the second server is      A method for broadcasting / multicasting services in mobile communications, which is performed through a Session Initiation Protocol / Internet Protocol (SIP / IP) core. The method of claim 5, wherein the first server      Broadcast / multicast service method of mobile communication, characterized in that for performing a signal transmission with the SIP / IP core through the SIP-based interface. Requesting the broadcast server to register a service of the client; Transmitting, by the broadcast server, the list of clients participating in the service to the presence server through the SIP / IP core when the registration request is approved; Transmitting status information of clients included in the list managed by the presence server to the broadcast server through a SIP / IP core; Transmitting the state information of the clients together with the service contents of the broadcast server to the client;      Whenever the status information of clients managed by the presence server changes, the changed status information is transmitted to the client through the SIP / IP core and the broadcast server. Multicast service method. The method of claim 7, wherein Asking the client whether to receive status information of other clients participating in the service;      If the client wants to receive status information of other clients, transmitting the list of clients to a presence server through a SIP / IP core. The method of claim 7, wherein the changed state information      Broadcast / multicast service method of mobile communication, characterized in that it includes the status information of all the clients included in the list. The method of claim 7, wherein the changed state information      A method for broadcasting / multicasting services in a mobile communication, comprising only information of a client whose status has changed. The method of claim 7, wherein the presence server is      And broadcasting status information of clients included in the list to the broadcast server periodically. In the broadcast / multicast service system for providing the content of a specific service to a plurality of clients, A server system providing status information of the plurality of clients participating in the specific service together with the contents of the specific service to the plurality of clients;      Receiving the specific service content from the server system together with status information of each of the plurality of clients, And at least one client capable of identifying in real time the status of the plurality of clients using the status information. The method of claim 12, wherein the server system A presence server for managing the status information of each client and transferring the changed status information to the broadcast server when the client status information is changed;      And a broadcast server configured to receive status information of clients participating in a specific service from the presence server and transmit the received status information together with the contents of the service to its service area. Cast / Multicast Service System. The method of claim 13, wherein the presence server is      And managing and transmitting the client status information to the broadcast server periodically. The method of claim 13,     And a Session Initiation Protocol / Internet Protocol (SIP / IP) core that performs signaling between the presence server and the broadcast server. The method of claim 13,      And a SIP-based interface connecting the presence server and the SIP / IP core. The method of claim 12, wherein the server system      And transmitting the client status information if the client desires. The broadcast / multicast service system of the mobile communication. A first server managing state information of each client and transferring the changed state information to the second server when the client state information is changed; A second server which receives status information of clients participating in a specific service from the first server and transmits the received status information together with the contents of the service to its service area;      And a client for receiving the client status information and the contents of the service and providing the same to the user. 19. The method of claim 18, wherein the first server      And managing and transmitting the client status information to the second server periodically. The method of claim 18,     And a Session Initiation Protocol / Internet Protocol (SIP / IP) core for signaling between the first server and the second server. The method of claim 20,      And a SIP-based interface connecting the second server and the SIP / IP core. The method of claim 18, wherein the second server      And transmitting the client status information if the client desires. The broadcast / multicast service system of the mobile communication. If some or all of the status information of a plurality of clients subscribed to a specific service managed by the first server is changed, Transmitting, by a first server, state information of the changed clients to a second server; And transmitting, by the second server, the status information of the changed clients received from the first server to a plurality of clients subscribed to the specific service. 24. The method of claim 23, wherein the client state information managed by the first server is      Broadcast / multicast service method of mobile communication, characterized in that delivered to the client at a predetermined time period. 24. The method of claim 23, wherein the signal transmission between the first server and the second server is      A method for broadcasting / multicasting services in mobile communications, which is performed through a Session Initiation Protocol / Internet Protocol (SIP / IP) core.

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