CN101662377B - Method, device and system for information push based on internet protocol television - Google Patents
Method, device and system for information push based on internet protocol television Download PDFInfo
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Abstract
The invention discloses a method, a device and a system for information push based on an internet protocol television, used for solving the problem that an operator is difficult to actively fulfill the business as only content business actively requested by a user device can be provided in the prior art. In the method, an IPTV service control functional entity transmits a notification message to multicast addresses or all user devices within the total network in a multicasting or broadcasting way, wherein the notification message is used for requesting the user devices to play multicast information; if the user devices confirm to receive the notification message, the user devices add in a multicast channel of the multicast information and receive a multicast stream by interacting with the transmission processing functional entity. By adopting the technical schemes, the content business achieved by the operator can be added.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to an information push method, apparatus, and system based on Internet Protocol Television (IPTV).
Background
Currently, the framework structure of Next Generation Networks (NGN) is basically determined. The NGN includes a user plane, a transport plane, a service control plane, an application plane, and the like in addition to a management plane. Among them, an IP Multimedia Subsystem (IMS) is a main functional entity set in the service control plane. The registration, authentication, Quality of Service (QoS) management and guarantee of the user and the terminal device can be realized through the IMS. Meanwhile, the IMS is a Session Initiation Protocol (SIP) based system, and supports access of various users, nomadic and mobility management of users, and interworking with other conventional networks or next generation networks and service convergence. Currently, IMS has become the main technology and architecture for next generation network convergence.
An interactive network television, also called Internet Protocol Television (IPTV), is a generic name of devices that provide services such as live broadcast, on-demand broadcast, and time-shift broadcast of a television program capable of supporting interactive capability to a user through an IP bearer network. The IPTV uses Asymmetric Digital Subscriber Line (ADSL) or ethernet to access a broadband network through a telecommunication channel, transmits a television signal through an internet protocol, and provides various digital media services including television programs by using a Set Top Box (STB) as a main terminal.
At present, through the integration of the NGN and the IPTV, functions such as on-demand, live broadcast, and video recording can be provided for the user terminal, but these functions are all realized based on an active request of the user equipment, so that the service realized by an operator is too few, which is not favorable for improving the competitiveness of the IPTV system.
Disclosure of Invention
In view of the foregoing, the present invention provides an IPTV-based information push method, apparatus, and system, so as to solve the problem that in the prior art, it is difficult for an operator to actively implement a service because only a content service actively requested by a user equipment can be provided.
According to one aspect of the invention, an internet protocol television-based information pushing method is provided, which is applied to a next generation network-based system comprising an Internet Protocol Television (IPTV) service control functional entity, a resource admission control subsystem and a transmission processing functional entity.
The IPTV-based information push method comprises the following steps: an IPTV service control functional entity sends a notification message to a multicast address or all user equipment in the whole network in a multicast or broadcast mode, wherein the notification message is used for requesting the user equipment to play multicast information; and the user equipment determines to receive the notification message, joins the multicast channel of the multicast information by interacting with the transmission processing functional entity, and receives the multicast stream.
According to another aspect of the present invention, an IPTV-based information push system is provided.
The IPTV-based information push system according to the present invention comprises: IPTV service control function entity and user equipment. The IPTV service control functional entity is used for sending a notification message of multicast information to all user equipment in a multicast address or in a whole network range in a multicast or broadcast mode, wherein the notification message is used for requesting the user equipment to play the multicast information; the user equipment is used for receiving the notification message, interacting with the transmission processing functional entity, adding the multicast channel of the multicast information, receiving the multicast stream and playing the multicast information.
According to yet another aspect of the present invention, an IPTV service control function entity is provided.
The IPTV service control function entity according to the present invention comprises: the acquisition module is used for acquiring the identifier of the multicast information; and the sending module is used for sending a notification message to a multicast address or all user equipment in the whole network range in a multicast or broadcast mode, wherein the notification message carries the identifier acquired by the acquiring module and is used for requesting the user equipment to play multicast information corresponding to the identifier.
Through at least one scheme of the invention, the network side actively sends the notification message to the multicast address or all the user equipment in the whole network, so that the user in the network segment or the whole network can select to immediately watch the multicast information recommended by the network side, the problem that the user equipment can only actively request to realize the content service is solved, and the content service realized by an operator can be increased.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an NGN-based IPTV system;
fig. 2 is a block diagram illustrating an IPTV-based information push system according to an embodiment of the present invention;
fig. 3 is a block diagram of an IPTV service control function entity according to an embodiment of the present invention;
fig. 4 is a flowchart of an IPTV-based information push method according to an embodiment of the present invention;
FIG. 5 is a flow chart of a specific implementation of an embodiment of the present invention;
fig. 6 is a flowchart illustrating an embodiment of resource reservation according to the present invention;
fig. 7 is another detailed flow chart of resource reservation according to an embodiment of the present invention.
Detailed Description
Overview of the function
As described above, the present invention provides an IPTV-based information push scheme for solving the problem in the prior art that a content service can only be performed based on an active request of a user equipment, in which an IPTV service control function entity sends a notification message to a multicast address or all user equipments in a network in a multicast or broadcast manner to request the user equipment to play multicast information, and the user equipment can select to play recommended multicast information.
The notification message sent by the IPTV service control function entity carries an identifier and description information of recommended multicast information, where the description information may be a brief description of the multicast information, and a user may determine whether to play the multicast information according to the description multicast information, for example, whether the description multicast information is news, weather forecast, interview, or the like.
Preferably, the multicast information recommended by the IPTV service control function entity to the user is a live program to be played, and the IPTV service control function entity sends the notification message to the user equipment before the live program is played.
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
For ease of understanding, the following first briefly describes an NGN-based IPTV system with reference to fig. 1.
Fig. 1 is a schematic structural diagram of an NGN-based IPTV system, and as shown in fig. 1, the NGN-based IPTV system mainly includes: user Equipment (User Equipment, abbreviated as UE)11, a Service Control function entity (if an IMS system is adopted in an NGN, the entity is a core IMS-core IMS)12, an IPTV Service Control function entity (IPTVService Control function, abbreviated as IPTV SCF)13, an IPTV Media function entity (IPTV MF)14, a Transport Processing function entity (TPF) 15, a Service Selection function entity (SSF) 16, and a Resource Admission Control Subsystem (RACS) 17. The above entities are described separately below.
The UE11 may specifically be a mobile phone with a mobile capability, a set-top box of a fixed network, or a soft terminal implemented based on software and implementing functions of the set-top box, and also includes functional entities such as a home gateway. The UE can realize IPTV services such as on-demand and live broadcast by interacting with the user, and the UE in the embodiment of the invention has to have storage capacity.
The service control functional entity 12 is connected to the UE11 through a Gm interface, and connected to the resource admission control subsystem 17 through a Gq' interface, and is a set of main functional entities in the service control plane of the NGN, and is mainly used for session control, service authentication, charging, and the like in the case of an IMS network, and the entity is a Core IMS. When the service control function entity 12 is a CoreIMS, the entity mainly includes core modules such as P-CSCF/I-CSCF/S-CSCF core call session control. The Core IMS is used to provide a session control mechanism based on SIP, and is also used to provide authentication and authorization for IPTV terminal users, request a resource admission control subsystem to perform resource allocation work, and the like. The Core IMS carries out SIP session by interacting with the IPTV terminal, the IPTV application function entity and the content distribution function entity, and completes the functions of safety, QoS, charging, roaming and the like.
The IPTV service control function entity 13 is connected to the service control function entity 12 through the ISC interface, and is configured to provide service authentication when a session is initiated or modified, and includes: checking the information of the user to see whether the user can legally use the selected content; credit limits and credit controls; the IPTV media control function entity provides service for the system selection, and the function entity mainly aims at IPTV services such as on-demand, live broadcast, video recording, time shifting and the like. The functional entity is a SIP application server in the case of an IMS network, and is used to actively initiate content push to the UE.
The IPTV MF14 is connected to the UE through Xc and Xd interfaces, where the Xc interface is connected to the UE for media streaming RTSP control, and the Xd interface is connected to the UE for media streaming transmission and media downloading. The functional entity may act as a multicast source for the live media stream, and when the functional entity acts as the multicast source, the multicast stream is delivered from the IPTV MF14 to the transport processing functional entity 15, and then delivered from the transport processing functional entity 15 to the UE 11.
The transmission processing functional entity 15 is a network access connection and IP core functional entity, and is responsible for data transmission on the premise of guaranteeing QoS, and includes: an Elementary Control Function (ECF), an Elementary Forwarding Function (EFF), and a border gateway Function. Wherein,
the EFF is used to forward a data flow received from one flow point entry on to one or more other flow point exits. For unicast, there is only one egress for a streaming point; for multicast, multiple flow point outlets are included.
The ECF is used to process control protocol data (e.g., routing protocol data) for unicast and multicast data received from a streaming point. The functions that may be included are: sending control protocol data to other ECFs (including events that trigger policy evaluation); interacting with one or more EFFs to suggest new or modified EFFs existing forward push behavior; interaction with other functions within the transport processing function.
SSF16 is used to provide service selection information such as a list of services that the terminal may access, etc.
And the RACS17 is used for completing resource control requests from the Core IMS module, determining available transmission resources, and interacting with the bearer layer to complete functions of bandwidth reservation, allocation, packet filtering, network address and port translation and the like.
Based on the above system, according to the embodiment of the present invention, firstly, an IPTV-based information push system is provided, which is used to realize that a network side actively pushes information to a UE.
Fig. 2 is a block diagram illustrating a structure of an IPTV-based information push system according to an embodiment of the present invention, and as shown in fig. 2, the IPTV-based information push system according to an embodiment of the present invention includes: IPTV service control function entity 22 and UE 24. The various entities described above are further described below in conjunction with the figures.
The IPTV service control function entity 22 is configured to send a notification message to a multicast address or all UEs 24 in the whole network in a multicast or broadcast manner, where the notification message is used to request the UE24 to play multicast information;
the UE24 is connected to the IPTV service control function entity 22 through a network, and is configured to receive the notification message from the IPTV service control function entity 22, and through interacting with the transmission processing function entity, add the multicast channel of the multicast information, receive the multicast stream sent by the transmission processing function entity, and play the multicast information.
The multicast information includes a multicast live program, that is, the multicast information recommended to the UE by the IPTV service control function entity 22 through the notification message is a live program, after receiving the notification message, the UE may select to watch the live program or may select to refuse to watch the live program, and sends a selection result to the IPTV service control function entity 22 through a response message, and when the user selects to watch the live program, the transmission processing function entity transmits a multicast stream of the live program to the UE.
Further, in order to facilitate the UE to determine whether to play the live program, the IPTV service control function entity is further configured to carry a request parameter in the sent notification message, where the request parameter includes, but is not limited to, the following:
(1) pushing identifier information for indicating that the recommended live program is a live program of a channel which needs to be directly watched by a user instead of a media file or stream which needs to be stored or a push-on-demand program which needs to be directly watched by UE and the like; (2) description information of recommended live program content, such as the title, starring actors, general plot, and the like of the program; (3) duration of the program, etc.
In order to facilitate the UE24 to identify the recommended multicast information, the request parameter also needs to carry a unique identifier of the multicast information, and the UE24 interacts with the transmission processing entity according to the identifier and joins the multicast channel of the multicast information corresponding to the identifier.
Through the IPTV-based information push system provided by the embodiment of the invention, a network side can actively push live programs to a multicast address or all UEs in the whole network range.
According to the embodiment of the present invention, an IPTV service control function entity is further provided, and the IPTV service control function entity can be applied to the IPTV-based information push system.
Fig. 3 is a block diagram of an IPTV service control function entity according to an embodiment of the present invention, and as shown in fig. 3, the IPTV service control function entity according to the embodiment of the present invention includes: an acquisition module 32 and a sending module 34. The above-described respective modules are further described below with reference to the drawings.
The obtaining module 32 is configured to obtain an identifier of the multicast information; the sending module 34 is connected to the obtaining module 32, and is configured to send a notification message to a multicast address or all UEs in a whole network range in a multicast or broadcast manner, where the notification message carries the identifier obtained by the obtaining module 32, and is used to request the UE to play multicast information corresponding to the identifier.
Preferably, the multicast information may be a live program.
According to the IPTV service control function entity of the embodiment of the present invention, the notification message may be sent to all UEs in a multicast address or a whole network in a multicast or broadcast manner, and the multicast information is recommended to the UEs.
According to the embodiment of the invention, the invention also provides an information pushing method based on the IPTV, which is applied to an NGN-based system comprising an IPTV service control function entity, a service control function entity and a transmission processing function entity, wherein if an IMS system is adopted in the NGN, the service control function entity is correspondingly Core-IMS. The method can be realized by using the IPTV service control functional entity or the information push system.
Fig. 4 is a flowchart of an IPTV-based information push method according to an embodiment of the present invention, and as shown in fig. 4, the IPTV-based information push method according to an embodiment of the present invention mainly includes the following processes (step S402-step S404):
step S402: an IPTV service control functional entity sends a notification message to a multicast address or all UE in the whole network in a multicast or broadcast mode, wherein the notification message is used for requesting the UE to play multicast information;
step S404: and the UE determines to receive the notification message, namely to receive the multicast information recommended by the IPTV service control function, interacts with the transmission processing function entity, joins in a multicast channel of the multicast information and receives a multicast stream. The details of each of the above-described processes are further described below.
Step S402
Before sending notification messages to multicast addresses or all UEs in the whole network range in a multicast or broadcast mode, the IPTV service control functional entity firstly acquires unique identifiers of multicast information to be recommended to the UEs, carries the unique identifiers in the notification messages and sends the notification messages to the UE in the network segment or the whole network range.
In addition, in order to facilitate the user to determine whether to accept the multicast information recommended by the IPTV service control functional entity, the IPTV service control functional entity needs to obtain description information of the multicast information, for example, the multicast information is information belonging to news, traffic, sports, and the like, and a brief content description of the multicast information, and the IPTV service control functional entity also carries the obtained information in a notification message and sends the notification message to the UE.
Preferably, in practical application, the multicast information is a multicast live program, and the IPTV service control function entity sends a notification message to a multicast address or all UEs in a whole network range before the live program is played, where specifically, the notification message may carry the following information:
(1) the pushed live program unique identifier;
(2) pushing identifier information for identifying that the recommended live program is a live program of a channel which a user needs to directly watch, and is not a media file or stream which needs to be stored or a pushed on-demand program;
(3) description information of live program contents, such as the title, starring actor, general plot, and the like of the program;
(4) the duration, start time or end time of the program, etc.
(II) step S404
After the notification message reaches the multicast address or the UE in the network-wide range, the UE may determine whether to accept the notification message (i.e. accept the multicast information recommended by the IPTV service control function entity) according to any one or a combination of the following conditions:
(1) judging whether to receive the notification message sent by the IPTV service control functional entity according to the pre-configuration;
(2) judging whether to accept the notification message through a set monitoring port;
(3) and judging whether to accept the multicast information according to the selection of the user, specifically, the UE can display the information carried in the notification message to the user, and the user can judge whether to accept the multicast information according to the displayed information.
When the UE determines to receive the multicast information, the UE sends a request to a transmission processing functional entity according to the unique identifier of the multicast information carried in the received notification message, the UE interacts with the transmission processing functional entity, the UE is added into a multicast channel of the multicast information, and the UE starts to receive a multicast stream sent by the transmission processing functional entity.
Specifically, before the UE joins the multicast channel and starts receiving the multicast stream, the IPTV service control function entity and the UE need to establish one or more content delivery channels, and reserve resources required for the UE to play the multicast information, where the process includes the following two implementation manners, which will be described below in a specific embodiment with reference to the two implementation manners, and specifically refer to the flows shown in fig. 6 and fig. 7.
The method of the embodiment of the invention can realize that the network side actively pushes the broadcast multicast information to all the UE in the multicast address or the whole network range, thereby increasing the content service realized by the operator.
In order to further describe the specific implementation of the above method, the following takes the recommended multicast information as a live program as an example, and the specific implementation of the above method provided by the embodiment of the present invention is described.
Fig. 5 is a flowchart of a specific implementation process of this embodiment, and as shown in fig. 5, the specific implementation process of this embodiment mainly includes the following steps:
step S502: and the IPTV service control functional entity sends a notification message aiming at the multicast program of the live broadcast service packet to a multicast address or all the UEs in the whole network in a multicast or broadcast mode.
In the specific implementation process, the notification message carries a request parameter, and the request parameter includes: pushing identifier information (indicating that the recommended is live program of a channel that a user needs to directly watch instead of a media file or stream that needs to be stored, or other situations that the pushed on-demand program needs to be directly watched by the UE, etc.); description information of the recommended channel live program content, such as the title, starring actors, general plot and the like of the program; duration of the program, etc.
Step S504: and the UE judges whether to accept the multicast program, if so, continues the next step, and otherwise, ends the flow.
Specifically, the UE may determine whether to accept the multicast program according to a preset configuration, or the UE may determine whether to accept the multicast program according to whether a port for monitoring the multicast program is provided, or the UE may determine whether to accept the multicast program according to a selection of a user.
Step S506: one or more signaling processes for establishing network parameters of a content delivery channel for processing the live broadcast service are carried out between the IPTV service control functional entity and the UE, resources are reserved and submitted, and service resources are guaranteed. The main purpose of establishing the signaling process is to reserve and submit resources and allocate bandwidth so as to guarantee the quality of service of channel live broadcast.
Step S508: the UE interacts with a transmission processing function entity (including a basic control function and a basic forwarding function) in the transmission network, joins the multicast channel of the multicast program, and starts to receive the multicast stream.
In the step S506, there may be two implementation manners for the signaling procedure of establishing one or more network parameters for processing the content delivery channel of the live broadcast service between the IPTV service control function entity and the UE, as shown in fig. 6 and fig. 7, as shown in fig. 6, where one implementation manner mainly includes the following processing:
step S602: UE sends a media providing request for establishing one or more content delivery channels to a service control function entity (P-CSCF in the corresponding Core IMS if an IMS system is adopted in the NGN network);
step S604: the service control function entity and the resource admission control subsystem carry out resource reservation according to the information in the media providing request;
step S606: the service control functional entity transmits the media providing request for establishing one or more content delivery channels to the IPTV service control functional entity;
step S608: the IPTV service control functional entity returns a response message of the media providing request of the content delivery channel to the service control functional entity, wherein the response message indicates that the content delivery channel is established;
step S610: updating resource reservation between a service control function entity (or P-CSCF in Core IMS) and a resource admission control subsystem;
step S612: a service control function entity (or P-CSCF in Core IMS) returns a response message of a media providing request of a content delivery channel to the UE;
step S614: UE sends confirmation message for confirming receiving the established content delivery channel to the service control function entity;
step S616: the service control function entity (or the P-CSCF of the Core IMS) and the resource admission control subsystem deliver and submit all the reserved resource information, and activate the live broadcast service packet in the transmission network at the edge of the network, so that the UE can be added into the multicast stream;
step S618: the service control function entity sends a response message for establishing the content delivery channel to the IPTV service control function entity, which indicates that the resource submission is completed and the user is ready to join in multicast.
Step S620: and the IPTV service control functional entity sends a response message to the service control functional entity.
Step S622: and the service control function entity sends a response message of the confirmation message to the UE.
Another implementation manner of the signaling process in which one or more content delivery channels are established between the IPTV service control function entity and the UE in step S506 for processing the network parameters of the live broadcast service is shown in fig. 7, and mainly includes the following processing:
step S702: UE sends a media providing request for establishing one or more content delivery channels to a service control function entity;
step S704: the resource reservation is carried out between the service control function entity (P-CSCF in the corresponding Core IMS if the IMS system is adopted in the NGN network) and the resource admission control subsystem according to the information in the media provision request;
step S706: a service control function entity (or P-CSCF in Core IMS) forwards a media providing request for requesting to establish one or more content delivery channels to an IPTV service control function entity;
step S708: the IPTV service control functional entity returns a response message of the media providing request of the content delivery channel to the service control functional entity;
step S710: submitting the reserved resources between a service control function entity (or P-CSCF in Core IMS) and a resource admission control subsystem;
step S712: the service control function entity (or P-CSCF in Core IMS) returns a response message to the UE indicating that the media provision of the content delivery channel is completed.
The technical scheme provided by the embodiment of the invention can be applied to an IMS-based or non-IMS-based system in a next generation network, and the core competitiveness of an IPTV system can be improved.
As described above, with the technical solution provided by the embodiment of the present invention, the IPTV service control function entity sends the notification message to all UEs in the preset network or the whole network in a multicast or broadcast manner, requests the UE to play a certain multicast message, so as to realize to push the multicast message to the UE, and the user receiving the notification message can select to immediately view the multicast message recommended by the network side, thereby increasing the content service implemented by the operator and improving the competitiveness of the IPTV system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. An information push method based on internet protocol television is applied to a system based on a next generation network and comprising an internet protocol television IPTV service control function entity, a resource admission control subsystem and a transmission processing function entity, and is characterized in that the method comprises the following steps:
the IPTV service control functional entity sends a notification message to a multicast address or all user equipment in the whole network in a multicast or broadcast mode, wherein the notification message is used for requesting the user equipment to play multicast information;
and the user equipment determines to receive the notification message, joins a multicast channel of the multicast information by interacting with the transmission processing functional entity, and receives a multicast stream.
2. The method according to claim 1, wherein the determining, by the ue, to accept the notification message specifically includes one or any combination of the following:
the user equipment determines to accept the notification message according to the preset configuration;
the user equipment determines to accept the notification message according to a set monitoring port;
and the user equipment determines to accept the notification message according to the selection of the user.
3. The method of claim 1, wherein the ue joins a multicast channel of the multicast information, and before receiving a multicast stream, the method further comprises:
and the IPTV service function control entity performs signaling interaction with the user equipment and reserves resources required by the user equipment for playing the multicast information.
4. The method according to claim 3, wherein the signaling interaction between the IPTV service control function entity and the ue is performed, and the reserving resources required for the ue to play the multicast information specifically comprises:
the service control function entity receives a media providing request which is from the user equipment and indicates to establish one or more content delivery channels, interacts with the resource admission control subsystem and reserves resources required by the content delivery channels;
the service control functional entity forwards the media providing request to the IPTV service control functional entity, and receives a response message of the media providing request returned by the IPTV service control functional entity after the one or more content delivery channels are established;
and the service control functional entity interacts with the resource admission control subsystem, submits the reserved resources and returns the response message to the user equipment.
5. The method according to claim 4, wherein the interacting between the service control function entity and the resource admission control subsystem, submitting the reserved resource, and returning the response message to the ue specifically includes:
firstly, the service control functional entity interacts with the resource admission control subsystem to submit the reserved resource, and then returns the response message to the user equipment; or
And secondly, the service control functional entity firstly returns the response message to the user equipment, and then interacts with the resource admission control subsystem to submit the reserved resource.
6. The method of claim 5, wherein prior to performing the second process, the method further comprises:
and the service control functional entity interacts with the resource admission control subsystem to update the reserved resources.
7. The method according to claim 5 or 6, wherein in the second processing, after the service control function entity first returns the response message to the user equipment, the method further comprises:
the user equipment sends a confirmation message for confirming the reception of the established content delivery channel to the service control function entity;
after submitting the reserved resources, the method further comprises:
and the service control function entity sends a response message for indicating the completion of resource submission to the IPTV service control function entity and sends a response message of the confirmation message to the user equipment.
8. The method of any of claims 1 to 6, wherein the multicast information is a live program.
9. The method according to claim 8, wherein said service control function entity is a core multimedia subsystem if an IP multimedia subsystem is employed in said next generation network.
10. An IPTV-based information push system comprising: IPTV service control function entity, user equipment and transmission processing function entity, characterized in that,
the IPTV service control function entity is configured to send a notification message to a multicast address or all user equipments in a whole network in a multicast or broadcast manner, where the notification message is used to request the user equipment to play multicast information, and the IPTV service control function entity includes: the acquisition module is used for acquiring the identifier of the multicast information; a sending module, configured to send a notification message to a multicast address or all user devices in a whole network in a multicast or broadcast manner, where the notification message carries the identifier acquired by the acquiring module;
and the user equipment is used for receiving the notification message, joining the multicast channel of the multicast information by interacting with the transmission processing functional entity, receiving the multicast stream sent by the transmission processing functional entity and playing the multicast information.
11. The system of claim 10, wherein the multicast information is a live program.
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| CN1972468A (en) * | 2006-10-26 | 2007-05-30 | Ut斯达康通讯有限公司 | An information push-delivery apparatus and method |
| CN101001151A (en) * | 2006-01-15 | 2007-07-18 | 腾讯科技（深圳）有限公司 | Message transmitting system and method |
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| CN101001151A (en) * | 2006-01-15 | 2007-07-18 | 腾讯科技（深圳）有限公司 | Message transmitting system and method |
| CN1968402A (en) * | 2006-06-12 | 2007-05-23 | 华为技术有限公司 | Stream media service system and its realization method |
| CN1972468A (en) * | 2006-10-26 | 2007-05-30 | Ut斯达康通讯有限公司 | An information push-delivery apparatus and method |
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