WO2009140909A1

WO2009140909A1 - Method and system for forcibly transferring multicast message, route apparatus and terminal apparatus

Info

Publication number: WO2009140909A1
Application number: PCT/CN2009/071853
Authority: WO
Inventors: 王冬; 蔡小虎
Original assignee: 华为技术有限公司
Priority date: 2008-05-19
Filing date: 2009-05-19
Publication date: 2009-11-26
Also published as: CN101299715B; CN101299715A

Abstract

A method and a system for forcibly transferring multicast message, a route apparatus and a terminal apparatus are disclosed. The method includes: receiving multicast message, detecting whether the multicast message carries forcible multicast information, forcibly and preferentially transferring the multicast message to client when the multicast message that carries said forcible multicast information is detected, then the client judging that the multicast message is a forcible multicast message according to the forcible multicast information, and forcibly and preferentially displaying the contents of the forcible multicast message. Thus, with the need for users to receive emergency information under special circumstances, the information needed by users may be sent to users in time whether the user is in the receiving state or not, and losses of delay in receiving information are avoided.

Description

Method and system for forcing multicast, and routing device, terminal device

This application claims priority to Chinese Patent Application No. 200810093260.2, entitled "Method and System for Mandatory Multicast, and Routing Equipment, Terminal Equipment", filed on May 19, 2008, the entire contents of which are hereby incorporated by reference. This is incorporated herein by reference.

Technical field

The present invention relates to the field of communication technologies, and in particular, to a method and system for forcing multicast, and a routing device and a terminal device.

Background technique

The rise of the Internet, the advancement of broadband technology, and the digitization of cable TV have promoted the development of IPTV (Internet Protocol Television) services. The system structure of ΙΡΤ V mainly includes subsystems such as streaming media service, program editing, storage and authentication and billing. It is mainly used to store streaming media files and to transfer streaming media files based on IP networks. The IPTV service uses a television or a personal computer as a display terminal to send streaming media files to users through a broadband network, thereby providing users with broadband services such as digital broadcast television, video services, information services, interactive communities, interactive leisure entertainment, and e-commerce.

In the prior art, the user obtains the IPTV service by means of on-demand. For example, users pass H-CSCF

(Hyper-Call Session Control Function device) Select the ordered on-demand program to send a call request to the IMS (Information Management System) core network; IMS core network checks user information, triggers IPTV The AS (Action Script command) is processed; the IPTV AS interacts with the CDN (Content Delivery Network) to determine the video server and video stream information of the final service, and returns it to the H-CSCF through the IMS core network; IPTV AS Sending charging information to the operation support management system; the H-CSCF returns the served video server and video stream information and related authorization information to the set top box; the set top box carries the identity certificate and the authorization certificate to send a video connection request to the selected video service network; The service network performs verification of the identity certificate and the authorization certificate. After the verification is passed, the set top box establishes a connection with the video service network and performs video stream transmission.

In the research and practice of the prior art, the inventors found that the prior art has the following problems: The prior art can only implement the function of the user on demand, and cannot actively play the function of the specific program to the user under certain special circumstances.

Summary of the invention The technical problem to be solved by the embodiments of the present invention is to provide a method and system for forcing multicast, and a routing device and a terminal device, which are capable of forcibly transmitting information that the user needs to receive in time when the user needs to urgently receive certain information. user.

To solve the above technical problem, the embodiment of the present invention is implemented by the following technical solutions: One embodiment of the present invention provides a method for forcing multicast, including:

Receiving a multicast packet, and detecting whether the multicast packet carries the mandatory multicast information. When the multicast packet is carried in the multicast packet, the multicast packet is forcibly forwarded to the client. The client determines, according to the mandatory multicast information, that the multicast packet is a mandatory multicast packet, and forcibly plays the content of the mandatory multicast packet preferentially.

An embodiment of the present invention provides a routing device, including:

The detecting unit is configured to detect whether the received multicast message carries the mandatory multicast information, and when the multicast message is configured to carry the mandatory multicast information, send the forced priority forwarding message;

The forwarding unit is configured to forcibly preferentially forward the multicast packet when receiving the forced priority forwarding message from the detecting unit.

An embodiment of the present invention provides a terminal device, including:

The determining unit is configured to: when the multicast packet is received, determine, according to the mandatory multicast information carried in the multicast packet, the multicast packet is a mandatory multicast message, and then send a forced priority broadcast message;

The playing unit is configured to force the content of the forced multicast message to be preferentially played when the forced priority play message is received.

An embodiment of the present invention provides a system for forcing multicast, including:

The multicast source is configured to send a multicast packet carrying the mandatory multicast information when the multicast is required. The routing device is configured to detect whether the multicast packet is received when the multicast packet is received from the multicast source. Carrying the mandatory multicast information, when it is detected that the multicast information is carried in the multicast text, forcibly forwarding the multicast "^ text";

The terminal device is configured to receive a multicast packet from the routing device, and determine, according to the forced multicast information carried in the multicast packet, that the multicast >3⁄4 text is mandatory multicast >3⁄4 text, forcibly prioritizing playback The content of the forced multicast message.

The above technical solution shows that when a router receives a multicast packet, it checks whether the received multicast packet is a mandatory multicast packet. If the multicast packet is mandatory, the router forwards the multicast packet preferentially. When the client receives the forwarded multicast packet from the router, if the received multicast packet is a mandatory multicast packet, the client forcibly broadcasts the multicast packet to the user. Therefore, in a special case where the user needs to receive some information urgently, whether the user is in the receiving state or not, the information required to be received by the user can be sent to the user in time by forced priority forwarding and playing, so as to avoid the loss caused by the timely receipt of the information. .

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a flowchart of a method according to an embodiment of the present invention;

2 is a schematic diagram of a system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a terminal device according to an embodiment of the present invention;

4 is a schematic diagram of a routing device according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a system according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic diagram of a terminal device according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a routing device according to an embodiment of the present invention.

detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

The embodiments of the present invention provide a method and system for forcing multicast, and a routing device and a terminal device, which are used in a special case where the user needs to urgently receive some information, and the user is required to receive the user regardless of whether the user is in the receiving state. Information is sent to users in a timely manner, for example, weather warnings, major economic events, and more. In order to make the technical solutions of the present invention more clear, the following detailed description will be given by way of examples.

Referring to FIG. 1, a flowchart of a method according to an embodiment of the present invention includes: S101: The multicast source sends a multicast packet carrying the preset information. Because the data packets in the IPTV standard are usually in UDP format, the UDP port number of the multicast source can be used as the default information to identify multicast packets that need to be forced.

S102: The router receives the multicast packet.

S103: The router detects whether the received multicast message carries preset information, and if yes, performs

S104, otherwise, execute S105.

S104: The router uses the existing multicast table to forcibly forward the multicast packet carrying the preset information, and then proceeds to step S106.

S105: The router forwards the content of the original channel by using the existing multicast table, and returns to step S102. S106: The client receives the multicast message forwarded by the router.

S107: The client detects whether the received multicast message carries the preset information, and if yes, executes S108, otherwise, executes S109.

S108: The client forcibly plays the content of the multicast packet carrying the preset information. Specifically, the client temporarily stops playing the content of the original channel, and plays the content of the multicast packet carrying the preset information. The priority of the multicast packet carrying the preset information is higher than other data packets. The priority of the multicast packet can be directly discarded after the other data packet is received, and the multicast packet carrying the preset information is played. After the multicast packet carrying the preset information is played, the process proceeds to step S109.

S109: The client continues to play the content of the original channel, and the process ends.

In this embodiment, the step S108 can be replaced by the following process: If the client supports the "Picture in Picture," function, the original channel content can be played while the preset information is played in the "Picture in Picture" of the display screen. The content of the multicast message, for example, the end user is watching the football game using the IPTV service, and suddenly a typhoon warning message appears on the lower right of the display screen.

In this embodiment, the identifier of the preset information is added to the multicast packet that needs to be forced to be multicast. When the router and the terminal receive the multicast packet carrying the preset information, the router and the terminal are forced to receive the group that carries the preset information. The broadcast packet is processed, so that the multicast packet that needs to be multicast is sent to the user in time, thereby avoiding the loss caused by the user not receiving the information in time.

2 is a schematic diagram of a system according to an embodiment of the present invention. The system includes: a first sending unit 201, configured to send a multicast packet carrying preset information when forced multicast is required. Since the data packet in the IPTV standard is usually in UDP format, a certain UDP of the multicast source can be used. The port number is used as the default information to identify the multicast packets that need to be forced to be multicast. Of course, other specific tags can be used as the identifier of the mandatory multicast packets.

The first routing unit 202 is configured to: when receiving the multicast message from the first sending unit 201, check whether the multicast packet carries preset information, and if yes, the received multicast packet is a mandatory multicast packet. The priority of the packet is higher than that of the normal multicast packet. Therefore, the first routing unit 202 forcibly forwards the multicast packet carrying the preset information according to the multicast table.

The first terminal unit 203 is configured to detect, when the multicast packet is received from the first routing unit 202, whether the multicast packet carries preset information, and if yes, the received multicast packet is mandatory multicast. The packet has a higher priority than the normal multicast packet, and the first terminal unit 203 forcibly plays the content of the multicast packet carrying the preset information.

The first terminal unit 203 includes:

The first detecting unit 204 is configured to: when receiving the multicast packet, detecting whether the multicast packet carries the preset information, and if yes, receiving the multicast packet as a mandatory multicast packet, and sending the mandatory priority broadcast message ; as well as

The first playing unit 205 is configured to stop playing the multicast message of the original channel when the mandatory priority play message is received, and play the content of the multicast message carrying the preset information, where the preset information is carried. The priority of multicast packets is higher than that of other data packets. After receiving other data packets, the packets can be discarded directly.

The first detecting unit 204 is configured to: when receiving the multicast packet, detecting whether the multicast packet carries the preset information, and if yes, receiving the multicast packet as a mandatory multicast packet, and sending the mandatory priority broadcast message ; as well as,

The second playing unit 206 is configured to: when playing the forced multicast message, play the original channel, and play the content of the multicast message carrying the preset information by using a picture-in-picture manner, for example, the terminal user The IPTV service is being used to watch football matches, when a typhoon warning message appears suddenly at the bottom right of the display.

FIG. 3 is a schematic diagram of a terminal device according to an embodiment of the present invention, where the terminal device includes:

The first detecting unit 204 is configured to: when receiving the multicast packet, detecting whether the multicast packet carries the preset information, and if yes, receiving the multicast packet as a mandatory multicast packet, and sending the mandatory priority broadcast message ; The playing unit 301 is configured to: when receiving the mandatory priority play message, preferentially play the content of the received multicast message.

Specifically, the playing unit 301 includes:

The first playing unit 205 is configured to stop playing the multicast message of the original channel when the forced priority play message is received, and play the content of the multicast message carrying the preset information, where the preset information is carried. The priority of multicast packets is higher than that of other data packets. After receiving other data packets, the packets can be discarded directly.

Referring to FIG. 4, it is a schematic diagram of a routing device according to an embodiment of the present disclosure, where the routing device includes:

The second detecting unit 401 is configured to detect whether the received multicast packet carries the preset information, and if yes, the multicast packet is a mandatory multicast packet, because the priority of the forced multicast packet is higher than that of the normal multicast. The priority of the packet is forwarded. Therefore, the forced priority forwarding message of the forced multicast packet is forwarded.

The first forwarding unit 402 is configured to, when receiving the mandatory priority forwarding message from the second detecting unit 401, forcibly forward the multicast packet carrying the preset information according to the multicast table.

Referring to FIG. 5, it is a flowchart of a method according to an embodiment of the present invention. The method includes: S501: Reserve one or more group IP addresses as mandatory IP addresses.

S502: Add the reserved group IP address to all static configuration groups of the router directly connected to the client, thereby establishing a static mandatory multicast table.

S503: The multicast source with the reserved group IP address sends a forced multicast packet when the mandatory multicast is required.

S504: The router receives the multicast packet.

S505: The router determines that the multicast packet is a mandatory multicast packet according to the static mandatory multicast table established in step S502. If yes, execute S506; otherwise, execute S507.

S506: The router uses the static mandatory multicast table established in step S502 to forcibly forward the received multicast packet preferentially, and then proceeds to step S508. S507: The router forwards the content of the original channel by using the existing multicast table, and returns to step S504. S508: The client receives the multicast packet forwarded by the router.

S509: The client determines whether the multicast packet is a mandatory multicast packet according to the group IP address of the multicast packet. If yes, go to step S510; otherwise, go to step S511.

S510: The client forcibly plays the content of the received multicast packet preferentially. Specifically, the client temporarily stops playing the content of the original channel, and then plays the content of the forced multicast message. At this time, since the priority of the forced multicast packet is higher than the priority of other data packets, the client receives the content. After the other data packet is discarded, the forced multicast packet is directly discarded. After the forced multicast packet is played, the process proceeds to step S511.

S511: The client continues to play the content of the original channel, and the process ends.

In this embodiment, step S511 can be replaced by the following process: If the client supports "picture-in-picture, function, play the original channel content, and play the forced multicast report in the "picture-in-picture" of the display screen. The content of the text, for example, the end user is watching the football match using the IPTV service, when a typhoon warning message suddenly appears on the lower right of the display screen.

In this embodiment, a static mandatory multicast table is set up on the router to establish a static mandatory multicast table. The static mandatory multicast table is used for the forced multicast packets to be forwarded. When the terminal receives the mandatory multicast packet. The content of the mandatory multicast is preferentially played, so that the multicast packets that need to be forced to be multicast are sent to the user in time, thereby avoiding the loss caused by the user not receiving the information in time.

Referring to FIG. 6, a schematic diagram of a system according to an embodiment of the present invention includes:

The second sending unit 601 is configured to send a forced multicast packet when forced multicast is required.

The second routing unit 602 is configured to determine, according to the static mandatory multicast table, whether the multicast packet is a mandatory multicast packet, if the multicast packet is received by the second sending unit 601, and if yes, because of the multicast packet The priority of the text is higher than the priority of the general packet. Therefore, the second routing unit 602 preferentially forwards the received mandatory multicast packet according to the static mandatory multicast table.

The second terminal unit 603 is configured to: when receiving the multicast message from the second routing unit 602, determining, according to the group IP address of the multicast packet, that the received multicast packet is a mandatory multicast packet, The content of the mandatory multicast packet is preferentially broadcasted because the priority of the mandatory multicast packet is higher than the priority of the normal packet.

The system further includes:

The configuration unit 604 is configured to add the reserved group IP address to the second router unit 602. Statically configure a group to establish a static mandatory multicast table.

The second terminal unit 603 includes:

The first determining unit 605 is configured to determine, according to the group IP address of the multicast packet, whether the packet is a mandatory multicast packet, if the multicast packet has a higher priority than the normal multicast packet. The priority of the packet is sent to the forced priority broadcast message of the content of the mandatory multicast message; and the first playing unit 205 is configured to stop playing the multicast message of the original channel when receiving the forced priority broadcast message, To play the content of the multicast packet carrying the preset information, the priority of the multicast packet carrying the preset information is higher than the priority of other data packets. Discard; or,

The first judging unit 605 is configured to determine, according to the IP address of the multicast packet, whether the packet is a mandatory multicast packet, and if the multicast packet has a higher priority than the general multicast packet Priority of the packet, sending a forced priority broadcast message that preferentially plays the content of the forced multicast message; and, the second playing unit 206, when receiving the forced multicast message, while playing the original channel, The picture-in-picture mode plays the content of the multicast message carrying the preset information. For example, the terminal user is watching the football game using the IPTV service, and suddenly the typhoon warning information appears on the lower right of the display screen.

FIG. 7 is a schematic diagram of a terminal device according to an embodiment of the present invention, including:

The first determining unit 605 is configured to determine, according to the group IP address of the multicast packet, whether the packet is a mandatory multicast packet, if the multicast packet has a higher priority than the normal multicast packet. Priority of the packet, sending a priority broadcast message that preferentially plays the content of the mandatory multicast message.

The playing unit 301 is configured to preferentially play the content of the received multicast message when receiving the forced priority play message.

Specifically, the playing unit 301 includes:

The second playing unit 206 is configured to: when playing the forced multicast message, playing the original channel, and playing the content of the multicast message carrying the preset information by using a picture-in-picture, for example, for the terminal The user is watching the football match using the IPTV service, and suddenly a typhoon warning message appears on the lower right of the display.

FIG. 8 is a schematic diagram of a routing device according to an embodiment of the present invention, including:

The second judging unit 801, when receiving the multicast packet, determines whether the multicast packet is a mandatory multicast packet according to the static mandatory multicast table, and if so, the priority of the forced multicast packet is higher than that of the general group. The priority of the broadcast packet is forwarded. Therefore, the forced priority forwarding message of the forced multicast packet is forwarded.

The second forwarding unit 802 is configured to forward the multicast packet according to the static mandatory multicast table when receiving the mandatory priority forwarding message from the second determining unit 801.

The above embodiment shows that when the router receives the multicast packet, it checks whether the received multicast packet is a mandatory multicast packet. If the multicast packet is mandatory, the router forwards the multicast packet preferentially. When the client receives the forwarded multicast packet from the router, if the received multicast packet is a mandatory multicast packet, the client forcibly broadcasts the multicast packet to the user. Therefore, in a special case where the user needs to receive some information urgently, whether the user is in the receiving state or not, the information required to be received by the user can be sent to the user in time by forced priority forwarding and playing, so as to avoid the loss caused by the timely receipt of the information. .

One of ordinary skill in the art will appreciate that all or part of the steps in implementing the above-described embodiments can be accomplished by a program that instructs related hardware, which can be stored in a computer readable storage medium.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The method and system for forcing multicast provided by the present invention, and the routing device and the terminal device are described in detail. For those skilled in the art, according to the idea of the embodiment of the present invention, the specific implementation manner and the application range are There are variations, and the description is not to be construed as limiting the invention.

Claims

Rights request

A method for forcing multicast, comprising:

The method according to claim 1, wherein the forced multicast information is preset information, and specifically includes: a first UDP port number of the multicast source; or, The first mark.

The method according to claim 1, wherein the mandatory multicast information is a group IP address, and the forced forwarding of the multicast packet to the client is:

The mandatory multicast table is forcibly forwarded to the client.

The method according to claim 3, wherein before the router receives the multicast packet, the router includes:

Reserve at least one group IP address as the IP address of the mandatory multicast message;

Adding the reserved at least one group IP address to the router configuration static group directly connected to the client, and establishing a static mandatory multicast table.

5. A routing device, comprising:

The routing device according to claim 5, wherein the forwarding unit comprises: a first forwarding unit, configured to: enforce a priority based on an existing multicast table when receiving a forced priority forwarding message from the detecting unit Forwarding the multicast packet; or

The second forwarding unit is configured to forcibly forward the multicast packet according to the preset static mandatory multicast table when receiving the mandatory priority forwarding message from the detecting unit.

7. A terminal device, comprising:

The judging unit is configured to: according to the mandatory multicast information carried in the multicast packet, when receiving the multicast packet If the multicast packet is a mandatory multicast packet, the forced priority broadcast message is sent, and the playing unit is configured to forcibly play the content of the forced multicast message when receiving the mandatory priority broadcast message. .

The terminal device according to claim 7, wherein the determining unit comprises: a first determining unit, configured to: determine, according to preset information carried in the multicast packet, when the multicast packet is received, If the multicast packet is a mandatory multicast packet, the forced priority broadcast message is sent; or

The second determining unit is configured to: when the multicast packet is received, determine that the multicast packet is a mandatory multicast packet according to the group IP address carried in the multicast packet, and send a forced priority broadcast message.

The terminal device according to claim 7, wherein the playing unit comprises: a first playing unit, configured to stop playing the multicast message of the original channel when receiving the forced priority playing message, and change to Playing the content of the multicast packet carrying the mandatory multicast information; or

The second playing unit is configured to play the content of the multicast message carrying the forced multicast information in a picture-in-picture manner while playing the original channel.

10. A system for forcing multicast, characterized in that:

The multicast source is configured to send a multicast packet carrying the mandatory multicast information when the multicast is required. The routing device according to any one of claims 8-9 is configured to receive the group from the multicast source. When the message is broadcast, it is detected whether the multicast message carries the mandatory multicast information. When the multicast message is carried in the multicast message, the multicast message is forcibly forwarded.

The terminal device according to any one of claims 10 to 12, configured to receive a multicast packet from the routing device, and determine, according to the mandatory multicast information carried in the multicast packet, that the multicast packet is When the multicast message is forcibly, the content of the mandatory multicast message is forcibly played.