CN101483532B

Movatterモバイル変換

Info

Publication number: CN101483532B
Application number: CN2008100009797A
Authority: CN
Inventors: 王啸; 朱东铭
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-01-10
Filing date: 2008-01-10
Publication date: 2012-04-04
Anticipated expiration: 2028-01-10
Also published as: CN101483532A

Abstract

The invention provides a method for copying media stream in IP packet network, comprising the following steps: the media stream copying processing function copies the appointed media stream according to the media stream copying request received by the media stream copying control function to generate a copied media stream; and the media stream copying processing function sends the copied media stream to the destination client. The invention also provides a system and a device for copying the media stream in the IP packet network. In the embodiment of the invention, corresponding architecture is established according to different application occasions, and the method can be applied to a plurality of source user terminals to copy media streams to a plurality of destination terminals simultaneously, thereby realizing streaming media applications such as video sharing and the like.

Description

A kind of method of media stream duplication, system and equipment

Technical field

The present invention relates to communication technical field, relate in particular to a kind of method, system and equipment of media stream duplication.

Background technology

SIP (Session Initiation Protocol; Session initiation Protocol) be by IETF (The InternetEngineering Task Force; One of multimedia communications system framework agreement of Internet engineering duty group) working out; Be be used to set up, the application layer protocol of change or ending multimedia session, with RTP (Real-time Transport Protocol, RTP)/RTCP (Real-time TransportControl Protocol; RTCP Real-time Transport Control Protocol), SDP (Service Description Protocol; Service discovery protocol), RTSP (Real-Time Streaming Protocol, real-time streaming protocol), DNS agreements such as (DomainName System, domain name systems) cooperate; Common session foundation and the media negotiation of accomplishing among the IMS (IP MultimediaSubsystem, IP Multimedia System); In case set up session, Media Stream will use Real-time Transport Protocol in bearing bed, directly to transmit, can mutual flexibly multiple medium in a session.

The SIP REFER method that a kind of sender and recipient carry out information interaction has been proposed among the RFC3515; Specifically comprise: the sender of REFER request guides its recipient to go to visit the resource that is identified in the REFER request; This resource is to identify through a URL (Uniform Resource Locater, uniform resource locator); If this URL is a SIP URI, then the recipient of REFER request can send another SIP and ask the UA (User Agent, user agent) that identified to this SIP URI.Under normal conditions, a subscription is also created in the REFER request simultaneously, makes that the recipient of REFER request can be the state information and the result that carry out the REFER operation, and notice is given the sender.

The proposition of IETF the generic structure of medium controls, as shown in Figure 1, comprising: Control Server (logic entity), Control Client (logic entity) and Control Channel (control channel).Wherein, Control Server accepts the medium of Control Client and handles request message, and carry out concrete medium and handle operation, as: playback, recording, medium mixing etc.; Control Client sends message, Request Processing media resource to Control Server; Control Channel is that Control Client is mutual through carrying out SDP between SIP and ControlServer, consults the passage of a transmitting control message of foundation, based on reliable connection.In this framework; Control Client and Control Server set up media control channel (Control Channel) alternately through SIP SDP; Control Client sends the medium control messages through media control channel to Control Server, realizes the medium control and treatment.

IPTV (Internet Protocol Television; IPTV) is a kind of broadband cabled television network that utilizes; Integrate multiple technologies such as the Internet, multimedia, communication, the technology of the multiple interactive services that comprises DTV is provided to the domestic consumer.The user can use PC (PersonalComputer, personal computer) or network machine top box to add the general television set mode at home and enjoy the IPTV business, and it is professional also can to enjoy IPTV through portable terminal.IPTV uses TCP (Transmission ControlProtocol; Transmission control protocol)/IP (Internet Protocol; IP Internet Protocol) carries out clean culture, broadcasting or group broadcasting video frequency business as bearing protocol, effectively television network, three fields of telephone network and the Internet are combined.

IMS based IPTV provides IPTV professional under the overall architecture of IMS; Come streaming media service to be provided and to merge Streaming Media and the professional multimedia service of real-time session to make full use of mechanism such as existing registration, authentication, route, session control and foundation in the IMS network, service trigger, charging, end-to-end QoS (Quality of Service, service quality) assurance for the user.That is to say that the user is to accomplish through the existing session control mechanism of IMS to the Multimedia session of content, in setting up conversation procedure, need reserve bearing resource for the transmission of Media Stream.

The business function framework of IMS based IPTV in the prior art; As shown in Figure 1; Mainly comprise UE (User Equipment; Subscriber equipment), be responsible for the control and the payment of UE Media Stream functional entitys such as IPTV media function (IPTV Media Functions) entity, IPTV service control function entity (IPTV MediaControl Functions), core IMS, obtain SSF (the ServiceSwitch Function of electronic program list; Service selection functional) entity, be used to find SDF (the ServiceDiscover Function of service supplier; The service discovering function) UPSF of entity and storing user subscription information (UserProvide Function, the user provides function).Wherein, IPTV Media Functions can be decomposed into MCF (Media Control Function, media control function) and MDF (MediaDelivery Function, media delivery function) from functional perspective.UE communicates by letter with the IPTV media function through transmission process function (TransportProcessing Functions), core IMS respectively; Core IMS is connected with the transmission process function through NASS (Network Attachment Subsystem, Network Attachment Subsystem) and RACS (Resource andAdmission Control Subsystem, Network Attachment Subsystem).In addition; In IPTV business control function body, IPTV media control function entity and IPTV medium handoff functions entity, comprise respectively: CoD (Content on Demand; Content-on-demand) function, BC (Broadcast; Broadcast capability) entity and PVR (Person Video Record, personal video recording) function etc.

Wherein, the media delivery function is some media servers normally, under the control of media control function, transmit the Media Stream that the user needs to user terminal.Media control function can also receive and the operation of the Play Control of process user (using the RTSP agreement to realize usually), the for example F.F. of medium, retreat, suspend, operation such as location.IPTV service control function (IPTV Service Control Functions) is responsible for providing professional to UE, comprising: conversation initialization, and user account control, control MCF provide corresponding media function etc.SCF (Service Control Function, service control function) is mutual through y2 interface and MCF, and the request medium are handled service.

In realizing process of the present invention; Inventor of the present invention finds to exist in the prior art following shortcoming: in Streaming Medias such as video sharing are used; Need the media stream duplication that user terminal is receiving be arrived other terminal, and not propose the implementation of above-mentioned media stream duplication in framework that present TISPAN IPTV provides and the flow process.

Summary of the invention

The embodiment of the invention provides a kind of method, system and equipment of media stream duplication, has realized the media stream duplication of source end is sent to one or more receiving terminals.

The embodiment of the invention provides the method for media stream duplication in a kind of IP Packet Based Network, may further comprise the steps:

The media stream duplication processing capacity is duplicated appointment of medium stream according to the duplicate media stream request that the media stream duplication controlled function receives, and generates duplicate media stream;

The media stream duplication processing capacity sends to the purpose client with said duplicate media stream.

The embodiment of the invention provides the system of media stream duplication in a kind of IP Packet Based Network, and said system comprises media stream duplication originating end, media stream duplication controlled function, media stream duplication processing capacity and media stream duplication receiving terminal:

Said media stream duplication originating end is used to initiate the duplicate media stream request;

Said media stream duplication controlled function is used to receive said duplicate media stream request;

Said media stream duplication processing capacity is used for producing duplicate media stream according to said duplicate media stream request and appointment of medium stream, and said duplicate media stream is sent to said media stream duplication receiving terminal.

The embodiment of the invention provides the device of the media stream duplication controlled function in a kind of IP Packet Based Network, comprising:

Receiver module: be used to receive the duplicate media stream request;

Control module: be used for appointment of medium stream being duplicated, generate duplicate media stream according to said duplicate media stream request control media stream duplication processing capacity.

Compared with prior art, the embodiment of the invention has following beneficial effect:

In the embodiment of the invention; According to different application scenarios; Set up corresponding framework, in the polymerization process of Media Stream, SDP mode and medium control messages dual mode are provided; And can be applicable to the multiple source user terminal simultaneously to a plurality of purposes terminal duplicate media stream, realize Streaming Media application such as video sharing.

Description of drawings

Fig. 1 is a medium control universal stand composition in the prior art;

Fig. 2 is a kind of IMS-based IPTV business function frame diagram in the prior art;

Fig. 3 is media stream duplication implementation structure figure in the embodiment of the invention one;

Fig. 4 is first kind of system construction drawing in the embodiment of the invention two;

Fig. 5 is second kind of system construction drawing in the embodiment of the invention three;

Fig. 6 is the third system construction drawing in the embodiment of the invention four;

Fig. 7 is when adopting first kind of system configuration in the embodiment of the invention five, the PUSH model process figure that the source client is initiated;

Fig. 8 is when adopting second kind of system configuration in the embodiment of the invention six, the PUSH model process figure that the source client is initiated;

Fig. 9 is when adopting the third system configuration in the embodiment of the invention seven, the PUSH model process figure that the source client is initiated;

Figure 10 is when adopting first kind of system configuration or second kind of system architecture in the embodiment of the invention eight, the PUSH model process figure that source client indicating services provides entity to initiate;

Figure 11 is when adopting the third system configuration in the embodiment of the invention nine, the PUSH model process figure that source client indicating services provides entity to initiate;

Figure 12 is when adopting the third system configuration in the embodiment of the invention ten, the PUSH model process figure that source client indication media stream duplication controlled entity is initiated;

Figure 13 when adopting first kind of system configuration or second kind of system configuration in the embodiment of the invention 11, adopts PULL model process figure;

Figure 14 when adopting the third system configuration in the embodiment of the invention 12, adopts PULL model process figure;

Figure 15 when adopting the third system configuration in the embodiment of the invention 13, adopts PULL model process figure;

Figure 16 is that duplicate media stream arrives a plurality of purpose client flow charts in the embodiment of the invention 14;

Figure 17 is the system construction drawing of media stream duplication in a kind of IP Packet Based Network in the embodiment of the invention;

Figure 18 is the media stream duplication controlled function structure drawing of device in a kind of IP Packet Based Network in the embodiment of the invention.

Embodiment

IPTV framework with TISPAN is an example, and the business in the embodiment of the invention provides entity to correspond to business control function body SCF, and medium processing entity or media stream duplication processing entities correspond to media function entity MF.And media function entity MF can comprise media control function entity MCF and media delivery functional entity MDF.Business is carried out in the process, and business control function body SCF and media control function entity MCF realize business alternately, and media control function entity MCF control media delivery functional entity MDF accomplishes medium and handles and pay.In the embodiment of the invention, do not describe the reciprocal process between MCF and the MDF, and both are described as MF as a whole, corresponding to medium processing entity among the embodiment or media stream duplication processing entities.

In the IMS framework, the business in the embodiment of the invention provides entity to correspond to application server AS, and medium processing entity or media stream duplication processing entities correspond to media resource function entity MRF.And media resource function entity MRF comprises media resource function controlled entity MRFC and media resource function processing entities MRFP.Business is carried out in the process, and application server AS and media resource function controlled entity MRFC realize business alternately, and media resource function controlled entity MRFC control media resource function processing entities MRFP accomplishes medium and handles and pay.

Following embodiment promptly can be applicable to the IPTV framework of TISPAN; Can be applicable to the IMS framework, for describing conveniently, the entity among the embodiment is not just named with the network element entity under the concrete framework yet; And adopting general title, the network element under its corresponding concrete framework can be referring to foregoing description.

Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail:

In the real network framework, the media stream duplication originating end can be a user terminal, also can be network entity; The media stream duplication receiving terminal can be user terminal or network entity.Media stream duplication controlled function and media stream duplication processing capacity can be closed and be located in the physical entity, perhaps provide entity and medium processing entity to close with business respectively and establish, perhaps respectively as network entity independently.

Above-mentioned media stream duplication is meant a purpose client of giving of media stream content transmission synchronous or skew that network entity (media stream duplication controlled function and media stream duplication processing capacity) receives the source client; Wherein, Be meant that synchronously network entity sends identical media content to the source client with the purpose client at one time simultaneously; Skew is meant that network entity is a basic point with the media stream content that the source client receives, and the media stream content that the purpose client receives can be with respect to basic point forward direction or back to skew one spacer segment.

Under above-mentioned first kind of system architecture, source client and business provide entity to set up media session, the Media Stream that the receiving media processing entities is sent; Source client or purpose client are through related service on the interaction triggers service supplier, and service supplier and purpose client are set up media session, and the media stream duplication portion that the control medium processing entity will send to the source client sends to the purpose client.

The embodiment of the invention three is second kind of system architecture, by different medium processing entity duplicate media stream is provided, and is as shown in Figure 5, comprising: source client, purpose client, business provide entity, medium processing entity 1 and medium processing entity 2.Wherein, the source client is the founder of media stream service, can initiate the media stream duplication request, the media stream duplication originating end among the corresponding embodiment one; Purpose client and business provide entity to carry out Signalling exchange and receive duplicate media stream, one of the media stream duplication originating end among the corresponding embodiment one and media stream duplication receiving terminal; Business provides entity to have the media stream duplication controlled function, provides media stream service and medium replication professional; Medium processing entity 1 provides Media Stream to the source client; Medium processing entity 2 provides Media Stream to the purpose client.

Wherein, Media Stream can synchronization replication send, and the promptly professional entity control medium processing entity that provides is sent and the synchronous Media Stream of source customer end contents to the purpose client; Media Stream also can squint and duplicate transmission, and the promptly professional entity control medium processing entity that provides is sent the Media Stream of content skew to the purpose client, this skew be with respect to the forward direction of the current receiving media stream of source client or back to time or the interval of content.

Under above-mentioned second kind of system architecture, source client and business provide entity to set up media session, the Media Stream that receiving media processing entities 1 is sent; Source client or purpose client provide related service on the entity through the interaction triggers business, and service supplier and purpose client are set up media session, and control medium processing entity 2 is sent the Media Stream of or skew synchronous with the source customer end contents to the purpose client.In addition; Under the network design situation of reality; Client based on dissimilar or access way etc.; Possibly provide the medium processing entity meeting of Media Stream different, be presented as that in this framework medium processing entity 1 provides Media Stream to the source client, medium processing entity 2 provides Media Stream to the purpose client.

Under the above-mentioned tertiary system system framework, the media stream duplication controlled function provides entity to separate with medium processing entity with media stream duplication processing capacity and business, as the individual entities existence, or closes with other entity and to establish.In order to represent that conveniently two functions are to exist as independent community among Fig. 6.And in the practical application, media stream duplication controlled function and media stream duplication processing capacity also can be merged into an independent entity, are presented as inner realization between two functions alternately, and external interface is identical with Fig. 5, are not just repeating at this.

Before medium replication took place, source client and business provided entity to set up media session, the Media Stream that the receiving media processing entities is sent.After medium replication takes place; Source client and media stream duplication controlled entity are set up media session; The media stream duplication controlled entity is that the duplicate requests of source client is set up one and duplicated focus; This focus is divided into duplicates control focus and replication processes focus, lays respectively at media stream duplication controlled entity and media stream duplication processing entities.The Media Stream that medium processing entity sends to the source client is rerouted to the focus of duplicating of media stream duplication processing entities, sends to the source client by duplicating focus again.Duplicate focus simultaneously and also the media stream duplication portion is sent to the purpose client.

In the embodiment of the invention, can form the media stream duplication scheme that satisfies different needs according to the difference of media stream duplication originating end and the reasonable combination of above-mentioned framework, said scheme is all in the protection range of present technique scheme.Part practical implementation flow process below only is provided, to help understanding to the present technique scheme.Initiator according to duplicate requests is different, can be divided into PUSH pattern and PULL pattern; In the PUSH pattern, the initiation control of duplicating is client in the source, and the source client is initiated the media stream duplication indication through direct or indirect mode to purpose client or purpose network entity; The PUSH pattern is divided into mode control terminal and network control mode again.In the PULL pattern, the initiation control of duplicating is in the purpose client, purpose client active request media stream duplication.

The source client has been represented source user terminal or source network entity, and the purpose client has been represented purpose user terminal or purpose network entity.That is to say that medium replication can be initiated by user terminal, also can initiate by network entity; The equipment that receives duplicate media stream can be user terminal, also can be network entity.For convenience, in below the flow process and embodiment, unified source client and the purpose client of being described as.

The embodiment of the invention five, when adopting first kind of system configuration shown in Figure 4, the PUSH pattern that the source client is initiated, as shown in Figure 7, may further comprise the steps:

Step s701, source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.

Step s702, source client indication purpose client receives the duplicate media stream of appointment, and such Indication message can be SIP INVITE, SIP REFER message or SIP INFO.

Step s703; The purpose client initiatively provides entity to carry out session interaction with business; Duplicate media stream is set up in negotiation; Business provides entity that purpose client-side session request message is carried out authorization check, in request message, obtains the media stream duplication relevant parameter, and carries out according to parameter and local configuration determination that the Media Stream synchronization replication is sent or transmission is duplicated in skew.

Step s704, business provides entity and medium processing entity interactive information, and the control medium processing entity is duplicated appointment of medium stream and send to the purpose client.

Step s801; At first source client and business provide entity to set up session; The Media Stream that the receiving media processing entities is sent; Source client indication purpose client receives the duplicate media stream of appointment then, and such Indication message can be SIP INVITE, SIP REFER message or SIP INFO.

Step s802, the purpose client initiatively provides entity to carry out session interaction with business, consults to set up duplicate media stream.

Step s803; Business provides entity that purpose client-side session request message is carried out authorization check; In request message, obtain the media stream duplication relevant parameter; And carry out according to this relevant parameter and local configuration determination that the Media Stream synchronization replication is sent or transmission is duplicated in skew, decision provides Media Stream by medium processing entity 2 to the purpose client.

Step s804, business provides entity and medium processing entity 1 mutual, obtains the broadcast state information of appointment of medium stream.

Step s805; Business provides entity and medium processing entity 2 mutual; According to the state of the broadcast state information setting that obtains from medium processing entity 1, comprise the play position, screen setting, captions type, category of language of Media Stream etc. to the Media Stream of purpose client terminal playing.

Step s806, control medium processing entity 2 is to purpose client terminal playing appointment of medium stream.

The embodiment of the invention seven, when adopting the third system configuration shown in Figure 6, in the PUSH pattern that the source client is initiated, source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.Concrete implementation procedure is as shown in Figure 9, may further comprise the steps:

Step s901, source client and media stream duplication controlled entity carry out session interaction, and request is created and to be duplicated focus, and the Media Stream input that focus is set in conversation request message is medium processing entity, and the Media Stream output is the source client.

Step s902, the media stream duplication controlled entity carries out authorization check to source client-side session request message, in request message, obtains the media stream duplication relevant parameter and (comprising: the media stream duplication service identification; Session information); Create one for Media Stream and duplicate focus, with media stream duplication processing entities interactive information, ask corresponding media processing resources simultaneously; The media stream duplication processing entities is that Media Stream is created medium replication processing focus, and the source client is added media stream duplication processing focus.

Step s903, the focus of duplicating that the media stream duplication controlled entity will be created sends to the source client.

Step s904, source client initiation session change procedure through consulting medium again, is modified to the media stream duplication processing entities with the receiving terminal of source Media Stream.The source Media Stream is redirected to the media stream duplication processing entities, by the media stream duplication processing entities source media stream duplication is sent to the source client again.

Step s905, source client and purpose client interactive information, indication purpose client adds duplicates focus.

Step s906, the purpose client is according to the indication of source client, and with media stream duplication controlled entity interactive information, request adds duplicates focus.

Step s907, media stream duplication controlled entity control media stream duplication processing entities adds focus with the purpose client, sends duplicate media stream to the purpose client.

In the embodiment of the invention, network control mode in the PUSH model process; Network control mode is exactly that the source client is sent request to network entity, and is mutual by network entity and purpose client, and request purpose client receives duplicate media stream.

The embodiment of the invention eight, when adopting first kind of system configuration or second kind of system architecture, the PUSH pattern that source client indicating services provides entity to initiate; Source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.Detailed process is shown in figure 10, may further comprise the steps:

Step s1001, source client indicating services provides entity that appointment of medium stream is copied to the purpose client.

Step s1002; Business provides the Indication message of entity to the source client (such Indication message can be SIP INVITE SIP REFER message or SIP INFO) to carry out authorization check; In Indication message, obtain the media stream duplication relevant parameter; Carry out session interaction with the purpose client then, consult to set up duplicate media stream.

Step s1003, business provides entity and medium processing entity interactive information, and the control medium processing entity is duplicated appointment of medium stream and send to the purpose client.

The embodiment of the invention nine, when adopting the third system configuration, the PUSH pattern that source client indicating services provides entity to initiate; Source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.Detailed process is shown in figure 11, may further comprise the steps:

Step s1101, source client indicating services provides entity that appointment of medium stream is copied to the purpose client, and such Indication message can be SIP INVITE, SIP REFER message or SIP INFO.Business provides the entity inspection to create the focus of duplicating of associated source Media Stream, directly carries out step s1106, otherwise carries out step s1102.

Step s1102; Business provides entity that the Indication message of source client is carried out authorization check; In Indication message, obtain the media stream duplication relevant parameter, business provides entity and media stream duplication controlled entity mutual (such can be alternately but be not limited to session interaction), and request is created and duplicated focus; And the Media Stream input that focus is set is medium processing entity, and the Media Stream output is the source client; The source client can be carried the address of a plurality of purpose clients in this flow process when initiating duplicate requests; To a plurality of purpose clients, service supplier provides a plurality of Media Stream outputs to the media stream duplication controlled entity to the requested service supplier simultaneously with media stream duplication.

Step s1103; The media stream duplication controlled entity receives the professional request that entity is provided; Create one for it and duplicate focus, with media stream duplication processing entities interactive information, ask corresponding media processing resources simultaneously; The media stream duplication processing entities is created media stream duplication for it and is handled focus, and the source client is added media stream duplication processing focus.

Step s1104, the media stream duplication controlled entity will be created duplicates focus and media stream duplication and handles the focus business of sending to entity is provided.

Step s1105; Business provide entity as signaling control node respectively to source client and medium processing entity initiation session change procedure; Through consulting medium again; The receiving terminal of source Media Stream on the medium processing entity is modified to the media stream duplication processing entities, and the transmitting terminal of source Media Stream is modified to the media stream duplication processing entities on the client of source.The source Media Stream is redirected to the media stream duplication processing entities, by the media stream duplication processing entities source media stream duplication is sent to the source client again.

Step s1106, business provides entity and purpose client mutual, and indication purpose client adds duplicates focus, and such Indication message can be SIP INVITE, SIP REFER message or SIP INFO.

Step s1107, the purpose client provides the entity indication according to business, carries out session interaction with the media stream duplication controlled entity, and request adds duplicates focus.

Step s1108, media stream duplication controlled entity control media stream duplication processing entities adds focus with the purpose client, sends duplicate media stream to the purpose client.

In addition; Step s1106 also can replace with to step s1108: media stream duplication controlled entity and purpose client are carried out session interaction and are consulted to set up the duplicate media stream session; Media stream duplication controlled entity control media stream duplication processing entities adds focus with the purpose client then, sends duplicate media stream to the purpose client.

The embodiment of the invention ten, when adopting the third system configuration, the PUSH pattern that source client indication media stream duplication controlled entity is initiated; Source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.Detailed process is shown in figure 12, may further comprise the steps:

Step s1201, source client and media stream duplication controlled entity carry out session interaction, and request is created and to be duplicated focus, and the Media Stream input that focus is set is medium processing entity, and the Media Stream output is source client and purpose client.

Step s1202; Media stream duplication controlled entity reception sources client session request message carries out authorization check to request message, in request message, obtains the media stream duplication relevant parameter and (comprising: the media stream duplication service identification; Session information); Create one for it and duplicate focus, with media stream duplication processing entities interactive information, ask corresponding media processing resources simultaneously; The media stream duplication processing entities is created media stream duplication for it and is handled focus, and the source client is added media stream duplication processing focus.

Step s1203, the media stream duplication controlled entity will be created duplicates focus and media stream duplication and handles focus and send to the source client.

Step s1204, source client initiation session change procedure through consulting medium again, is modified to the media stream duplication processing entities with the receiving terminal of source Media Stream.The source Media Stream is redirected to the media stream duplication processing entities, by the media stream duplication processing entities source media stream duplication is sent to the source client again.

Step s1205, media stream duplication controlled entity and purpose client are mutual, and indication purpose client receives duplicate media stream.

Step s1206, media stream duplication controlled entity control media stream duplication processing entities adds focus with the purpose client, sends duplicate media stream to the purpose client.

The embodiment of the invention 11 when adopting first kind of system configuration or second kind of system configuration, adopts the PULL pattern, and the purpose client provides entity requests to business; Source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent; The purpose client obtains source client medium streaming session information and (comprising: the dialogue identifier (to-tag), said Media Stream is described in the position among the SDP for callid, from-tag) of setting up Media Stream.Detailed process is shown in figure 13, may further comprise the steps:

Step s1301, purpose client and business provide entity to carry out session interaction, and appointment of medium stream is duplicated in request.

Step s1302, business provides entity that purpose client-side session request message is carried out authorization check, in request message, obtains the media stream duplication relevant parameter, and the control medium processing entity is duplicated appointment of medium stream and send to the purpose client.

The embodiment of the invention 12 when adopting the third system configuration, adopts the PULL pattern, and the purpose client is to the request of media stream duplication controlled entity; Source client and business provide entity and media stream duplication controlled entity to create alternately and duplicate focus, and the source Media Stream sends to the media stream duplication processing entities by medium processing entity, after the media stream duplication processing entities is duplicated, sends to the source client; The purpose client obtains the focus of duplicating of source client establishment.Shown in figure 14, may further comprise the steps:

Step s1401, purpose client and media stream duplication controlled entity carry out session interaction, and request adds duplicates focus.

Step s1402 duplicates controlled entity authorization check is carried out in the request of purpose client, in request message, obtains the media stream duplication relevant parameter, and control media stream duplication processing entities adds focus with the purpose client, sends duplicate media stream to the purpose client.

The embodiment of the invention 13 when adopting the third system configuration, adopts the PULL pattern, and the purpose client provides entity requests to business; Source client and business provide entity and media stream duplication controlled entity to create alternately and duplicate focus, and the source Media Stream sends to the media stream duplication processing entities by medium processing entity, after the media stream duplication processing entities is duplicated, sends to the source client; The purpose client obtains source client Media Stream relevant information.Detailed process is shown in figure 15, may further comprise the steps:

Step s1501, purpose client and business provide entity to carry out session interaction, and appointment of medium stream is duplicated in request.

Step s1502, business provides entity that purpose client-side session request message is carried out authorization check, in request message, obtains the media stream duplication relevant parameter, and business provides entity and media stream duplication controlled entity mutual, and request adds focus with the purpose client.

Step s1503, media stream duplication controlled entity control media stream duplication processing entities adds focus with the purpose client, sends duplicate media stream to the purpose client.

Each flow process source client can provide the technology that adopts URI-List in the reciprocal process of entity or medium processing controls entity with business in the embodiment of the invention 13; Once specify a plurality of purpose clients; Business provides entity or medium processing controls entity mutual with a plurality of purpose clients of appointment respectively, and Media Stream is copied to a plurality of purpose clients respectively.

The embodiment of the invention 14, duplicate media stream is to a plurality of purpose clients; Be example with source client PUSH pattern only below, description source client indicating services provides entity that duplicate media stream is duplicated and sends to a plurality of purpose clients.Above-mentioned various schemes can be used the URI-List technology duplicate media stream is sent to a plurality of purpose clients, are not just repeating at this.At first, source client and business provide entity to set up session, the Media Stream that the receiving media processing entities is sent.Shown in figure 16, may further comprise the steps:

Step s1601, source client indicating services provide entity that appointment of medium stream is copied to a plurality of purpose clients, in Indication message, adopt the URI-List mode to carry the address of a plurality of purpose clients.

Step s1602, business provides entity that authorization check is carried out in the request of source client, in request message, obtains the media stream duplication relevant parameter, has comprised the address of a plurality of purpose clients among the URI-List that carries in the inspection request message.

Step s1603, business provides entity and purpose client 1 to carry out session and hands over, and consults to set up duplicate media stream.

Step s1604, business provides entity and purpose client 2 to carry out session and hands over, and consults to set up duplicate media stream.

Step s1605, business provides entity and medium processing entity mutual, and the control medium processing entity is duplicated appointment of medium stream and send to purpose client 1.

Step s1606, business provides entity and medium processing entity mutual, and the control medium processing entity is duplicated appointment of medium stream and send to purpose client 2.

The embodiment of the invention provides the system of media stream duplication in a kind of IP Packet Based Network; Shown in figure 17, said system comprises media stream duplication originating end 100, media stream duplication controlled function 200, media stream duplication processing capacity 300 and media stream duplication receiving terminal 400.Said media stream duplication originating end 100 is used to initiate the duplicate media stream request; Media stream duplication controlled function 200 is used to receive said duplicate media stream request; Media stream duplication processing capacity 300 is used for generating duplicate media stream according to said duplicate media stream request and appointment of medium stream, and said duplicate media stream is sent to said media stream duplication receiving terminal 400.

Wherein, said media stream duplication controlled function 200 provides entity to provide by business; Said media stream duplication processing capacity 300 is provided by medium processing entity; Said business provides entity, be used for setting up session with said media stream duplication originating end, and the said medium processing entity of indication is sent said duplicate media stream after receiving duplicate requests; Said medium processing entity is used for providing entity indication back to generate said duplicate media stream according to said appointment of medium stream receiving said business, sends duplicate media stream to said media stream duplication receiving terminal.

Said media stream duplication controlled entity provides entity to provide by business; Said media stream duplication processing entities is provided by first medium processing entity and second medium processing entity; Said business provides entity, is used for setting up session with said media stream duplication originating end, and selects second medium processing entity after receiving duplicate requests; Said first medium processing entity is used to send said appointment of medium stream; Said second medium processing entity after being used to receive said business the indication of entity being provided, is sent said duplicate media stream according to said appointment of medium stream to said media stream duplication receiving terminal.

Media stream duplication controlled function device in a kind of IP Packet Based Network of the embodiment of the invention, as shown in Figure 8, comprising: receiver module 10: be used to receive the duplicate media stream request; Control module 20: be used for appointment of medium stream being duplicated, generate duplicate media stream according to said duplicate media stream request control media stream duplication processing capacity.

Wherein, said device provides entity to provide by business, and said media stream duplication controlled function also comprises: the unit is set up in first session: be used for setting up session with the source client; The first request receiving element: be used to receive the request that the purpose client is sent, described request is used to indicate said media stream duplication processing capacity to send said duplicate media stream.

Said media stream duplication controlled function also comprises: first selected cell: be used to select second medium processing entity, indicate said second medium processing entity to send said duplicate media stream to the purpose client.

Said media stream duplication controlled function also comprises: the second request receiving element: be used to receive the request that the purpose client is sent, described request is used for to the said duplicate media stream of said media stream duplication controlled entity request.

Said media stream duplication controlled function also comprises: the unit is set up in second session, is used for setting up the session of duplicating said appointment of medium stream with the purpose client; First indicating member: be used to indicate said media stream duplication processing capacity to send said duplicate media stream to said purpose client.

Said device is the media stream duplication controlled entity; Said media stream duplication controlled function also comprises: the 3rd request receiving element; Be used for the request that the reception sources client is sent, described request is used to ask said media stream duplication controlled entity to duplicate said appointment of medium stream to the purpose client; The unit is set up in the 3rd session: be used for setting up the session of duplicating said appointment of medium stream with said purpose client; Second indicating member is used to indicate said media stream duplication processing capacity to send duplicate media stream to said purpose client.

Said device is the media stream duplication controlled entity, and said media stream duplication controlled function also comprises: first duplicates focus creates the unit: be used to create the service duplication focus; First duplicates the focus unit that joins request: be used to receive the request of the said service duplication focus of adding that the purpose client sends; First duplicates focus adds indicating member: be used to indicate said media stream duplication processing capacity that said purpose client is added the medium replication focus that said media stream duplication processing capacity is created.

Said device also comprises: the authorization check unit: be used for authorization check is carried out in said duplicate media stream request.

Said device also comprises: the sending mode acquiring unit: be used for obtaining mode parameters from said duplicate media stream request, confirm that the Media Stream synchronization replication is sent or transmission is duplicated in skew.

Said device also comprises: duplicate the transmission parameter acquiring unit: be used for obtaining from said duplicate media stream request and duplicate the transmission parameter; Media Stream is confirmed the unit: be used for sending the Media Stream that is replicated that parameter is confirmed said appointment through said duplicating.

Said source client is subscriber terminal equipment or network entity, and said purpose client is subscriber terminal equipment or network entity.Media stream duplication controlled function and media stream duplication processing capacity are closed and are located at a physical entity; Or provide entity and medium processing entity to close with business respectively to establish; Or media stream duplication controlled function and media stream duplication processing capacity are respectively as network entity independently.

In the embodiment of the invention,, set up corresponding framework, and can be applicable to the multiple source user terminal, realize Streaming Media application such as video sharing simultaneously to a plurality of purposes terminal duplicate media stream according to different application scenarios.

Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product is stored in the storage medium; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims

1. the method for media stream duplication in the IP Packet Based Network is characterized in that, may further comprise the steps:

Source client and business provide entity to set up session and reception sources Media Stream;

The media stream duplication processing capacity sends to the purpose client with said duplicate media stream;

Said appointment of medium stream is duplicated, also comprises before generating duplicate media stream:

Said media stream duplication controlled function is obtained mode parameters from said duplicate media stream request, confirm that the Media Stream synchronization replication is sent or transmission is duplicated in skew;

Said media stream duplication controlled function is obtained from said duplicate media stream request and is duplicated the transmission parameter;

Said media stream duplication controlled function is sent the Media Stream that is replicated that parameter is confirmed said appointment through said duplicating.

2. the method for media stream duplication in the IP Packet Based Network according to claim 1 is characterized in that, said appointment of medium stream is duplicated, and also comprises before generating duplicate media stream:

Said media stream duplication controlled function is carried out authorization check to said duplicate media stream request.

3. like the method for media stream duplication in each said IP Packet Based Network in the claim 1 to 2, it is characterized in that said duplicate media stream request is sent for the source client.

4. like the method for media stream duplication in each said IP Packet Based Network in the claim 1 to 2, it is characterized in that said duplicate media stream request is that the purpose client is initiatively sent.

5. like the method for media stream duplication in each said IP Packet Based Network in the claim 1 to 2, it is characterized in that said duplicate media stream request is sent for source client indication purpose client.

6. like the method for media stream duplication in the said IP Packet Based Network of claim 5, it is characterized in that said media stream duplication controlled function provides entity to provide by business, the media stream duplication processing capacity is provided by medium processing entity; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said source client and said business provide entity to set up session, and the Media Stream that the receiving media processing entities is sent, said appointment of medium stream are the Media Stream that said medium processing entity is sent;

Said source client indicates said purpose client to receive said duplicate media stream;

The said business of said purpose client-requested provides entity indication medium processing entity to send said duplicate media stream;

Said medium processing entity is sent duplicate media stream to said purpose client.

7. like the method for media stream duplication in the said IP Packet Based Network of claim 5, it is characterized in that said media stream duplication controlled function provides entity to provide by business, the media stream duplication processing capacity is provided by first medium processing entity; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said source client and said business provide entity to set up session, receive the Media Stream that first medium processing entity is sent, and said appointment of medium stream is the Media Stream that said first medium processing entity is sent;

Said business provides entity selection second medium processing entity, indicates said second medium processing entity to send said duplicate media stream to said purpose client.

8. like the method for media stream duplication in the said IP Packet Based Network of claim 7, it is characterized in that, said appointment of medium stream duplicated, generate duplicate media stream and also comprise:

Said business provides entity to obtain the broadcast state of said appointment of medium stream to said first medium processing entity;

Said business provides entity to indicate said second medium processing entity to send said duplicate media stream to said purpose client and is specially:

Said business provides entity to indicate said second medium processing entity to send said duplicate media stream according to the broadcast state of said appointment of medium stream to said purpose client.

9. like the method for media stream duplication in the said IP Packet Based Network of claim 5, it is characterized in that said media stream duplication controlled function is the media stream duplication controlled entity, said media stream duplication processing capacity is the media stream duplication processing entities; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said purpose client is to the said duplicate media stream of said media stream duplication controlled entity request;

Said media stream duplication processing entities is sent duplicate media stream to said purpose client.

10. like the method for media stream duplication in the said IP Packet Based Network of claim 9, it is characterized in that,

Said source client indicates said purpose client to receive said duplicate media stream specifically to comprise:

Said source client is created to said media stream duplication controlled entity request and is duplicated focus;

Said source client receives the focus of duplicating of said media stream duplication controlled entity establishment;

Said source client indicates said purpose client to add the said focus of duplicating;

Said purpose client specifically comprises to the said duplicate media stream of said media stream duplication controlled entity request: said purpose client adds the said focus of duplicating to said media stream duplication controlled entity request;

Said media stream duplication controlled entity indicates said media stream duplication processing entities that said purpose client is added the said focus of duplicating;

Said media stream duplication processing entities is sent duplicate media stream to said purpose client and specifically comprised: said media stream duplication processing entities is sent duplicate media stream according to the said focus of duplicating to said purpose client.

11. the method like media stream duplication in the said IP Packet Based Network of claim 9 is characterized in that, said appointment of medium stream is duplicated, and generates duplicate media stream and also comprises:

Said source client provides the entity initiation session heavily to consult to said business, and said appointment of medium stream is rerouted to said media stream duplication processing entities;

Said media stream duplication processing entities is sent to said source client with said duplicate media stream.

12. the method like media stream duplication in the said IP Packet Based Network of claim 3 is characterized in that said media stream duplication controlled function provides entity to provide by business, the media stream duplication processing capacity is provided by medium processing entity; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

The said source said business of client-requested provides entity to duplicate appointment of medium stream to said purpose client;

Said business provides entity and said purpose client to set up the session of duplicating said appointment of medium stream;

Said business provides entity to indicate said medium processing entity to send said duplicate media stream to said purpose client.

13. the method like media stream duplication in the said IP Packet Based Network of claim 3 is characterized in that said media stream duplication controlled function is the media stream duplication controlled entity, said media stream duplication processing capacity is the media stream duplication processing entities; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said business provides entity to indicate said purpose client to receive said duplicate media stream;

Said media stream duplication processing entities is sent said duplicate media stream to said purpose client.

14. the method like media stream duplication in the said IP Packet Based Network of claim 13 is characterized in that,

The said source said business of client-requested provides entity to duplicate appointment of medium stream to said purpose client specifically to comprise:

Said business provides entity to create to said media stream duplication controlled entity request and duplicates focus, and said source client is added the said focus of duplicating;

Said business provides entity to receive the focus of duplicating of said media stream duplication controlled entity establishment;

Said business provides entity to indicate said purpose client to add the said focus of duplicating;

15. the method like media stream duplication in the said IP Packet Based Network of claim 13 is characterized in that,

Said business provides entity to indicate said purpose client to add and duplicates focus;

16. the method like media stream duplication in the said IP Packet Based Network of claim 13 is characterized in that, said appointment of medium stream is duplicated, and generates duplicate media stream and also comprises:

Said business provides entity heavily to consult to said medium processing entity initiation session, and said appointment of medium stream is rerouted to said media stream duplication processing entities;

Said business provides entity heavily to consult to said source client initiation session, with the said source of the transmission address notification client of the appointment of medium stream after the said changed course.

17. the method for media stream duplication in the IP Packet Based Network is characterized in that described in claim 1, said media stream duplication controlled function is the media stream duplication controlled entity, and said media stream duplication processing capacity is the media stream duplication processing entities; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Client-requested said media stream duplication controlled entity in said source duplicates said appointment of medium stream to said purpose client;

Said media stream duplication controlled entity and said purpose client are set up the session of duplicating said appointment of medium stream;

Said media stream duplication controlled entity indicates said medium processing entity to send duplicate media stream to said purpose client.

18. the method like media stream duplication in the said IP Packet Based Network of claim 17 is characterized in that, client-requested said media stream duplication controlled entity in said source duplicates said appointment of medium stream and specifically comprises to said purpose client:

Said media stream duplication controlled entity adds the said focus of duplicating with said purpose client.

19. the method like media stream duplication in the said IP Packet Based Network of claim 17 is characterized in that, said appointment of medium stream is duplicated, and generates duplicate media stream and also comprises:

20. the method like media stream duplication in the said IP Packet Based Network of claim 4 is characterized in that said media stream duplication controlled function provides entity to provide by business, the media stream duplication processing capacity is provided by medium processing entity; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said purpose client obtains to set up the session information of said appointment of medium stream;

The said business of said purpose client-requested provides entity to indicate said medium processing entity to send said duplicate media stream;

21. the method like media stream duplication in the said IP Packet Based Network of claim 4 is characterized in that said media stream duplication controlled function is the media stream duplication controlled entity, said media stream duplication processing capacity is the media stream duplication processing entities; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said source client and business provide entity, said media stream duplication controlled entity is mutual and created the service duplication focus;

Said purpose client obtains said service duplication focus;

Said purpose client adds said service duplication focus to the request of said media stream duplication controlled entity;

Said media stream duplication controlled entity indicates said media stream duplication processing entities that said purpose client is added the medium replication focus that said media stream duplication processing entities is created;

Said media stream duplication processing entities is sent duplicate media stream according to said medium replication focus to said purpose client.

22. the method like media stream duplication in the said IP Packet Based Network of claim 4 is characterized in that said media stream duplication controlled function is the media stream duplication controlled entity, said media stream duplication processing capacity is the media stream duplication processing entities; Said appointment of medium stream is duplicated, generates duplicate media stream and specifically comprise:

Said purpose client provides entity requests to add said service duplication focus to said business;

Said business provides entity to indicate said media stream duplication controlled entity that said purpose client is added said service duplication focus;

23. the method like media stream duplication in each said IP Packet Based Network of claim 6 to 22 is characterized in that, said source client arrives a plurality of purpose clients through uniform resource identifier lists URI-List indication duplicate media stream.

24. the method like media stream duplication in claim 1,2 and 6 to 22 IP Packet Based Network described in each is characterized in that said source client is the terminal equipment or the network equipment.

25. the system of media stream duplication in the IP Packet Based Network is characterized in that said system comprises media stream duplication originating end, media stream duplication controlled function, media stream duplication processing capacity and media stream duplication receiving terminal:

Said media stream duplication processing capacity is used for generating duplicate media stream according to said duplicate media stream request and appointment of medium stream, and said duplicate media stream is sent to said media stream duplication receiving terminal;

Said media stream duplication controlled function provides entity to provide by business;

Said media stream duplication processing capacity is provided by medium processing entity;

Said business provides entity, be used for setting up session with said media stream duplication originating end, and the said medium processing entity of indication is sent said duplicate media stream after receiving duplicate requests;

Said medium processing entity is used for providing entity indication back to generate said duplicate media stream according to said appointment of medium stream receiving said business, sends duplicate media stream to said media stream duplication receiving terminal.

26. the system like media stream duplication in the said IP Packet Based Network of claim 25 is characterized in that,

The media stream duplication controlled entity provides entity to provide by business;

The media stream duplication processing entities is provided by first medium processing entity and second medium processing entity;

Said business provides entity, is used for setting up session with said media stream duplication originating end, and selects second medium processing entity after receiving duplicate requests;

Said first medium processing entity is used to send said appointment of medium stream;

Said second medium processing entity after being used to receive said business the indication of entity being provided, is sent said duplicate media stream according to said appointment of medium stream to said media stream duplication receiving terminal.

27. the system like media stream duplication in the said IP Packet Based Network of claim 25 is characterized in that,

Said media stream duplication controlled function is provided by the media stream duplication controlled entity; Said media stream duplication processing capacity is provided by the media stream duplication processing entities; Said system also comprises: business provides entity, medium processing entity;

Said business provides entity, is used for setting up session with said media stream duplication originating end;

Said media stream duplication controlled entity is used to receive after the duplicate requests the said medium processing entity of indication and sends said duplicate media stream;

Said medium processing entity is used to send said appointment of medium stream to media stream duplication processing entities;

Said media stream duplication processing entities is used for generating said duplicate media stream according to said appointment of medium stream, sends said duplicate media stream to said media stream duplication receiving terminal.

28. the media stream duplication controlled function device in the IP Packet Based Network is characterized in that, comprising:

Receiver module: be used to receive the duplicate media stream request;

Control module: be used for appointment of medium stream being duplicated, generate duplicate media stream according to said duplicate media stream request control media stream duplication processing capacity;

The unit is set up in first session: be used for setting up session with the source client;

The first request receiving element: be used to receive the request that the purpose client is sent, described request is used to indicate said media stream duplication processing capacity to send said duplicate media stream;

Sending mode acquiring unit: be used for obtaining mode parameters, confirm that the Media Stream synchronization replication is sent or transmission is duplicated in skew from said duplicate media stream request.

29. device as claimed in claim 28 is characterized in that, said device provides entity to provide by business, and said media stream duplication controlled function device also comprises:

First selected cell: be used to select second medium processing entity, indicate said second medium processing entity to send said duplicate media stream to the purpose client.

30. device as claimed in claim 28 is characterized in that, said device is the media stream duplication controlled entity, and said media stream duplication controlled function device also comprises:

The second request receiving element: be used to receive the request that the purpose client is sent, described request is used for to the said duplicate media stream of said media stream duplication controlled entity request.

31. device as claimed in claim 28 is characterized in that, said device provides entity to provide by business, and said media stream duplication controlled function device also comprises:

The unit is set up in second session, is used for setting up the session of duplicating said appointment of medium stream with the purpose client;

First indicating member: be used to indicate said media stream duplication processing capacity to send said duplicate media stream to said purpose client.

32. device as claimed in claim 28 is characterized in that, said device is the media stream duplication controlled entity, and said media stream duplication controlled function device also comprises:

The 3rd request receiving element is used for the request that the reception sources client is sent, and described request is used to ask said media stream duplication controlled entity to duplicate said appointment of medium stream to the purpose client;

The unit is set up in the 3rd session: be used for setting up the session of duplicating said appointment of medium stream with said purpose client;

Second indicating member is used to indicate said media stream duplication processing capacity to send duplicate media stream to said purpose client.

33. device as claimed in claim 28 is characterized in that, said device is the media stream duplication controlled entity, and said media stream duplication controlled function device also comprises:

First duplicates focus creates the unit: be used to create the service duplication focus;

First duplicates the focus unit that joins request: be used to receive the request of the said service duplication focus of adding that the purpose client sends;

First duplicates focus adds indicating member: be used to indicate said media stream duplication processing capacity that said purpose client is added the medium replication focus that said media stream duplication processing capacity is created.

34., it is characterized in that said device also comprises like each described device of claim 28 to 33:

Authorization check unit: be used for authorization check is carried out in said duplicate media stream request.

35., it is characterized in that said device also comprises like each described device of claim 28 to 33:

Duplicate the transmission parameter acquiring unit: be used for obtaining and duplicate the transmission parameter from said duplicate media stream request;

Media Stream is confirmed the unit: be used for sending the Media Stream that is replicated that parameter is confirmed said appointment through said duplicating.