CN103379088A - System and method of providing live programs across domains - Google Patents
System and method of providing live programs across domains Download PDFInfo
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- CN103379088A CN103379088A CN201210107006XA CN201210107006A CN103379088A CN 103379088 A CN103379088 A CN 103379088A CN 201210107006X A CN201210107006X A CN 201210107006XA CN 201210107006 A CN201210107006 A CN 201210107006A CN 103379088 A CN103379088 A CN 103379088A
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Abstract
The invention relates to a system of providing live programs across domains, comprising a live data flow supply module, a live data flow receiving module, a relay management module, relay modules, a first and a second relay management interface module; the live data flow supply module is used for supplying live program data flow; the live data flow receiving module is used for receiving live program data flow; the relay management module is used for selecting at least one relay module from the relay modules and sending information of the relay module to the first or the second relay management interface module; the relay modules are used for receiving program data from the live data flow supply module and sending data to the live data flow receiving module; the first relay management interface module is used for sending relay requirements to the relay management module and receiving relay information; the second relay management interface module is used for receiving relay information from the relay management module.
Description
Technical field
The present invention relates to data communication field, particularly a kind of cross-domain system and method that programme televised live is provided.
Background technology
Live, refer to the programs such as video, audio frequency and picture and text are carried out point-to-area broadcasting, watch for users.The cross-domain programme televised live that provides refers to that cable operator strides management domain programme televised live is provided, as be positioned at Pekinese operator of Gehua Cable with the programme televised live in Beijing from the cross-domain management domain that is provided to the east cable operator that is positioned at Shanghai of its management domain, thereby so that the user of east cable operator can watch the programme televised live in Beijing.
Cable operator is cross-domain to provide the general employing of programme televised live following two kinds of methods:
(1), as shown in Figure 1, the programme televised live provider will be converted to based on the programme televised live of DVB standard IP (Internet Protocol) programme televised live data flow, send to the programme televised live recipient, the programme televised live recipient receives IP programme televised live data flow, and IP programme televised live data flow is converted to based on the programme televised live of DVB standard is input to programme televised live recipient's front end system as program source, the programme televised live recipient provides the programme televised live service by broadcasting or interactive mode for its management domain user.
(2), programme televised live provider IP based network directly provides the programme televised live service to programme televised live recipient's user.As shown in Figure 2, the programme televised live provider will be converted to based on the programme televised live of DVB standard IP programme televised live data flow, be input to media server, and with programme televised live EPG Data Enter to gate system, the gate system that programme televised live recipient user browses the programme televised live provider by IP network obtains programme televised live information, obtains IP-based programme televised live data flow with programme televised live information as parameter request programme televised live provider's media server.
No matter be above-mentioned which kind of method, when IP network transmission programme televised live data flow, also relate to and adopt which kind of technology to realize data dissemination.Generally speaking, multicasting technology has can reduce network traffics, improves the advantage of propagation velocity.But the realization of multicasting technology depends on the network equipment to the support of multicast routing protocol IGMP (Internet Group Management Protocol), and existing broadband IP network is not all to support multicast routing protocol, therefore, it is more pratical and feasible to adopt mode of unicast to transmit the programme televised live data flow at wide area network.
In sum, based on above-mentioned two kinds of methods, different cable TV network operation business adopts the cross-domain programme televised live data flow that provides of unicast technique at wide area network.But owing to directly exchange live TV stream between the recipient of the provider of above-mentioned two kinds of method programme televised lives and programme televised live, therefore all exist the defective of poor expandability, managerial confusion, and provide increasing of programme televised live number along with cross-domain, can consume the bandwidth of a large amount of wide area networks, affect other professional data transmission on the backbone network.
Summary of the invention
The object of the invention is to overcome the existing cross-domain existing poor expandability of System and method for that programme televised live is provided, managerial confusion, defective that bandwidth consumption is large, thereby provide a kind of extensibility good, be easy to management, little cross-domain of bandwidth consumption provide programme televised live System and method for.
To achieve these goals, the invention provides a kind of cross-domain system that programme televised live is provided, comprise that live data streams provides module, live data streams receiver module, relay management module, trunk module, the first relay management interface module and the second relay management interface module; Described live data streams provides module and the first relay management interface module to be positioned at programme televised live the territory is provided, described relay management module and trunk module are positioned at the programme televised live relay domain, and described live data streams receiver module and the second relay management interface module are positioned at the programme televised live acceptance domain; Wherein,
Described live data streams provides module to be used to provide the programme televised live data flow;
Described live data streams receiver module is used for receiving described programme televised live data flow;
Described relay management module is used for selecting at least one trunk module from described trunk module, and the information of selected trunk module is transmitted to described the first relay management interface module or described the second relay management interface module;
Described trunk module is used for module program receiving data being provided and sending data to described live data streams receiver module from described live data streams;
Described the first relay management interface module is used for sending relay request and receiving trunk information from this module to described relay management module;
Described the second relay management interface module is used for receiving trunk information from described relay management module.
In the technique scheme, described live data streams provides programme televised live data flow that module provides based on IP communication protocol, based on the programme televised live data flow of IP communication protocol by converted based on the programme televised live of DVB standard, or obtain by acquisition mode, or obtain by the mode of streamed files, or produce by copying the mode of transmitting IP programme televised live data flow.
In the technique scheme, described trunk module has one or more, when described trunk module has when a plurality of, carries out networking between described a plurality of trunk modules, and the mode of networking comprises cascade network, P2P networking, monocycle networking, dual loop redundancy networking.
In the technique scheme, described live data streams provides module can be the DVB-IP gateway, behind the digital live broadcast code stream demultiplexing of described DVB-IP gateway with the ASI interface input of cable television network, is converted to MPEG-2TS/UDP programme televised live data flow.
In the technique scheme, described live data streams receiver module can also comprise to received programme televised live data flow the processing of shaping, error correction, multiplexing, demultiplexing.
The present invention also provides a kind of and has realized cross-domain live method in the described cross-domain system of programme televised live that provides, and comprising:
Provide the territory to send to the programme televised live relay domain from programme televised live the programme televised live data;
And the programme televised live data are sent to the programme televised live acceptance domain from the programme televised live relay domain.
In the technique scheme, describedly provide the territory to send to the programme televised live relay domain from programme televised live the programme televised live data to comprise:
Step 101), described the first relay management interface module sends the request of programme televised live uplink relay to described relay management module, this uplink relay request comprises that at least described live data streams provides the sign of the IP of module and port, programme televised live;
Step 102), after described relay management module receives the request of programme televised live uplink relay, select at least one trunk module;
Step 103), described relay management module is to step 102) selected trunk module sends and receives the request of programme televised live data flow, this request comprises that at least live data streams provides the sign of the IP of module and port, programme televised live;
Step 104), described relay management module is according to the information of selected trunk module, send uplink relay information to described the first relay management interface module, described uplink relay information comprises step 102) purpose IP, the destination interface of selected trunk module;
Step 105), described live data streams provides block configuration uplink relay information, the step 102 that then comprises according to described uplink relay information) purpose IP, the destination interface of selected trunk module send to step 102 with the programme televised live data flow) selected trunk module;
Step 106), step 102) the programme televised live data flow is monitored and received to selected trunk module.
In the technique scheme, in described step 105) in, described live data streams provides module that the programme televised live data flow is sent to step 102) before the selected trunk module, also to carry out one or more in the following operation: provide module and step 102 in described live data streams) set up end-to-end escape way between the selected trunk module, digital watermarking is examined, encrypts, inserted to the data flow that transmit.
In the technique scheme, in described step 105) in, described live data streams provides module (1001) collocating uplink trunk information to comprise that the first relay management interface module (1005) crosses the described live data streams of instruction notification with described uplink relay information exchange module (1001) is provided.
In the technique scheme, in described step 102) in, when selecting trunk module, according to minimum delaying policy or trunk module minimum load strategy or be connected the maximum residual band-width tactics with trunk module and select trunk module.
In the technique scheme, describedly the programme televised live data sent to the programme televised live acceptance domain from the programme televised live relay domain comprise:
Step 201), described the second relay management interface module sends the request of programme televised live downlink relay to described relay management module, described downlink relay request comprises the purpose IP of described live data streams receiver module and destination interface, programme televised live sign at least;
Step 202), after described relay management module receives the request of programme televised live downlink relay, select at least one trunk module;
Step 203), described relay management module is according to step 202) in the information of selected trunk module, send downlink relay information to described the second relay management interface module, described downlink relay information comprises step 202 at least) IP and the port information of selected trunk module;
Step 204), described relay management module sends the request that described programme televised live identifies corresponding programme televised live data flow of transmitting that copies to selected trunk module, this copies the sign that Forward-reques comprises programme televised live at least, purpose IP and the destination interface of live data streams receiver module;
Step 205), determining step 202) in selected trunk module whether received described programme televised live data flow, if receive, then carry out next step, otherwise, step 202) selected trunk module obtains the corresponding programme televised live data flow of sign of described programme televised live in, then carries out next step;
Step 206), step 202) in selected trunk module according to purpose IP, the destination interface of described live data streams receiver module, copy to this module and to transmit described programme televised live data flow.
In the technique scheme, in described step 205) in, step 202) selected trunk module is before copying forwarding programme televised live data flow in to the live data streams receiver module, also can carry out one or more in the following operation: in step 202) in set up end-to-end escape way between selected trunk module and the live data streams receiver module, digital watermarking is examined, encrypts, inserted to the data flow that transmit.
In the technique scheme, in described step 202) in, when selecting trunk module, according to minimum delaying policy or trunk module minimum load strategy or be connected the maximum residual band-width tactics with trunk module and select trunk module.
The invention has the advantages that:
The cross-domain system that programme televised live is provided of the present invention have extensibility good, be easy to management, the advantage that bandwidth consumption is little.
Description of drawings
Fig. 1 is a kind of for the cross-domain schematic diagram that the system of programme televised live is provided in the prior art;
Fig. 2 is another kind of for the cross-domain schematic diagram that the system of programme televised live is provided in the prior art;
Fig. 3 is the cross-domain schematic diagram that the system of programme televised live is provided of the present invention;
Fig. 4 is that programme televised live provides the territory programme televised live to be sent to the flow chart of programme televised live relay domain among the present invention;
Fig. 5 be among the present invention the programme televised live acceptance domain to the flow chart of programme televised live relay domain acquisition request programme televised live;
Fig. 6 is cross-domain system's schematic diagram in one embodiment that programme televised live is provided of the present invention;
Fig. 7 is the schematic diagram that has the network in a plurality of territories among the embodiment.
Embodiment
Now the invention will be further described by reference to the accompanying drawings.
With reference to figure 3, the cross-domain system of programme televised live that provides of the present invention comprises that live data streams provides module 1001, live data streams receiver module 1002, relay management module 1003, trunk module 1004, the first relay management interface module 1005 and the second relay management interface module 1105; Wherein, described live data streams provides module 1001 and the first relay management interface module 1005 to belong to programme televised live territory A is provided, described live data streams receiver module 1002, the second relay management interface module 1105 belong to programme televised live acceptance domain B, and described relay management module 1003, trunk module 1004 belong to the programme televised live relay domain.Above-mentioned module all can be passed through network connection each other.
Described live data streams provides module 1001 to be used for providing the programme televised live data flow.Because described programme televised live data flow needs cross-domain transmission, and the current not transfer of data between the same area all is based on IP communication protocol usually, therefore, the programme televised live data flow that described live data streams provides module 1001 to provide is based on IP communication protocol.The IP-based programme televised live data flow that described live data streams provides module 1001 to provide can be by converted based on the programme televised live of DVB standard, such as the DVB-IP gateway; Also can be to obtain by acquisition mode, such as real-time recording arrangement, real-time monitoring equipment; Can also be that mode by streamed files obtains, such as media server; Can be again to produce by copying the mode of transmitting IP programme televised live data flow; Can also be other possible modes in the prior art.In addition, although in Fig. 3, only show a described live data streams module is provided, can have in actual applications a plurality of.These live data streams provide module to send data to trunk module respectively.
Described live data streams receiver module 1002 is used for receiving the programme televised live data flow.As a kind of optimal way, this module can also comprise to received programme televised live data flow the processing of shaping, error correction, multiplexing, demultiplexing, and the resulting result of described processing can be used as the front end system (this front end system does not mark) that the programme televised live signal source is input to the cable television network of programme televised live acceptance domain in Fig. 3.The received programme televised live data flow of described live data streams receiver module 1002 is based on IP communication protocol, needs according to the user, these programme televised live data flow based on IP communication protocol can be exchanged into based on being transferred to user terminal after the data flow of DVB standard again, perhaps directly are transmitted to user terminal.In Fig. 3, only show a described live data streams receiver module 1002, but can have in actual applications a plurality of.These live data streams receiver modules can also be processed from the trunk module receive data respectively.
Described relay management module 1003 is used for selecting trunk module and the information of selected trunk module is transmitted to the first relay management interface module 1005 or the second relay management interface module 1105.
Described trunk module 1004 is used for providing module 1001 program receiving data from described live data streams, and sends data to described live data streams receiver module 1002.Although in Fig. 3, described trunk module 1004 only shows one, in fact can have a plurality of.When described trunk module during more than, can carry out networking between these trunk modules, networking mode includes but not limited to cascade network, P2P networking, monocycle networking, dual loop redundancy networking etc.
Described the first relay management interface module 1005 is used for sending relay request and receiving trunk information from this module to described relay management module 1003, and can be in addition described live data streams provides module 1001 configurations described trunk information.
Described the second relay management interface module 1105 is used for receiving trunk information from described relay management module 1003, and is the described trunk informations of described live data streams receiver module 1002 configurations.
Can find out that from foregoing description system of the present invention comprises that programme televised live provides territory, programme televised live acceptance domain and programme televised live relay domain.System of the present invention is when cross-domain the providing of programme televised live is provided, provide the territory that the programme televised live data flow is sent to the programme televised live relay domain by IP network by programme televised live, according to the request of programme televised live acceptance domain described programme televised live data flow is relayed to the programme televised live acceptance domain by IP network by described programme televised live relay domain again.The below is to elaborating based on the cross-domain method of the system of programme televised live that provides of the present invention.
Figure 4 illustrates programme televised live provides the territory that programme televised live is sent to the idiographic flow of programme televised live relay domain, comprising:
Step 101), programme televised live provides the first relay management interface module 1005 of territory A to adopt http protocols to send the requests of programme televised live uplink relay to the relay management module 1003 of programme televised live relay domain, this uplink relay request comprises that live data streams provides the sign of the IP of module 1001 and port, programme televised live etc.
Step 102), after relay management module 1003 receives the request of programme televised live uplink relay, select at least one trunk module 1004.When selecting trunk module, have certain selection strategy, in the present embodiment, select trunk module according to the strategy that the distance live data streams provides module 1001 to have minimum time-delay.In other embodiments, also can adopt other selection strategy, comprise the trunk module minimum load, be connected maximum residual bandwidth etc. with trunk module.
In this step, selected trunk module can be one, also can be a plurality of.
Step 103), relay management module 1003 sends and receives the request of programme televised live data flow to selected trunk module, comprises in this request that live data streams provides sign of the IP of module 1001 and port, programme televised live etc.
In this step, when described relay management module 1003 sends and receives the request of programme televised live data flow to trunk module, can adopt Transmission Control Protocol.But also can adopt in other embodiments, other communication protocol.
Step 104), relay management module 1003 is according to the information of selected trunk module, sends the uplink relay information to the first relay management interface module 1005, purpose IP, the destination interface of selected trunk module before described uplink relay information comprises.
In this step, when described relay management module 1003 sends uplink relay information to the first relay management interface module 1005, adopted http protocol.But in other embodiments, also can adopt other communication protocols.
Step 105), provide module 1001 with received uplink relay information configuration to live data streams, described live data streams provides purpose IP, the destination interface of the selected trunk module that module 1001 comprises according to described uplink relay information that IP-based programme televised live data flow is sent to described trunk module.
In this step, provide the operation of module 1001 to be realized by described the first relay management interface module 1005 to live data streams received uplink relay information configuration, perhaps manually realized by the keeper.Live data streams provides module 1001 when the programme televised live data flow is sent to trunk module, can adopt UDP or Real-time Transport Protocol.Mention, selected trunk module can be one before, also can be a plurality of.When selected trunk module has when a plurality of, described live data streams provides module 1001 to send separately a programme televised live data flow to selected a plurality of trunk modules.In addition, described live data streams provides module 1001 before sending the programme televised live data flow to the purpose trunk module, also can carry out one or more in the following operation: provide between module 1001 and the purpose trunk module in live data streams and set up end-to-end escape way, digital watermarking is examined, encrypts, inserted to the data flow that transmit.
Step 106), selected trunk module 1004 is monitored at destination interface, and is received the programme televised live data flow.When receiving the programme televised live data flow, can adopt UDP or Real-time Transport Protocol.
Figure 5 illustrates the programme televised live acceptance domain to the handling process of programme televised live relay domain acquisition request programme televised live, comprising:
Step 201), the second relay management interface module 1105 adopts http protocols to send the requests of programme televised live downlink relay to the relay management module 1003 of programme televised live relay domain, described downlink relay request comprises the purpose IP of live data streams receiver module 1002 and destination interface, programme televised live sign.
In this step, when the second relay management interface module 1105 sends the request of programme televised live downlink relay to the relay management module 1003 of programme televised live relay domain, can adopt http protocol.But in other embodiments, also can adopt other communication protocols.
Step 202), after relay management module 1003 receives the request of programme televised live downlink relay, select at least one trunk module 1004.
In this step, when selecting trunk module, have certain selection strategy, in the present embodiment, select trunk module according to the minimum delaying policy of distance live data streams receiver module.In other embodiments, also can adopt other selection strategies, comprise the trunk module minimum load, be connected maximum residual bandwidth etc. with trunk module.Selected trunk module can be one, also can be a plurality of.
In this step selected trunk module and step 102) in selected trunk module do not have inevitable contact.Selected trunk module may be exactly step 102 in this step) in selected trunk module, may not be yet.
Step 203), relay management module 1003 is according to step 202) in the information of selected trunk module, adopt http protocol to send downlink relay information to the second relay management interface module 1105, described downlink relay information comprises IP and the port information of selected trunk module.
Step 204), relay management module 1003 adopts Transmission Control Protocol to send the request that described programme televised live identifies corresponding programme televised live data flow of transmitting that copies to selected trunk module, the described sign that Forward-reques comprises programme televised live at least, purpose IP and the destination interface of live data streams receiver module 1002 of copying.
Step 202) mention, selected trunk module has one or more, and when selected trunk module has when a plurality of, relay management module 1003 all sends the request that described programme televised live identifies corresponding programme televised live data flow of transmitting that copies to these trunk modules.
Step 205), determining step 202) in selected trunk module whether received described programme televised live data flow, if receive, then carry out next step, otherwise, step 202) selected trunk module obtains the corresponding programme televised live data flow of sign of described programme televised live from other trunk modules in, then carries out next step.
Mentioning before, step 202) selected trunk module and step 102 in) there is not inevitable contact in selected trunk module, step 202) selected trunk module may be step 102 in) in selected trunk module, may not be yet, and in step 106 before) in, the programme televised live data flow is sent to step 102) in the selected trunk module.Therefore, in this step, if step 202) selected trunk module and step 102) selected trunk module is identical, then meaning step 202) selected trunk module received described programme televised live data flow, next step can directly be carried out, if step 202) selected trunk module and step 102) selected trunk module is different, then meaning step 202) selected trunk module not yet receives described programme televised live data flow, need to obtain first the programme televised live data flow, and then carry out next step.
Step 206), step 202) in selected trunk module according to purpose IP, the destination interface of live data streams receiver module 1002, adopt UDP or Real-time Transport Protocol to copy to this module and transmit the programme televised live data flow.
Trunk module is before copying forwarding programme televised live data flow to live data streams receiver module 1002, also can carry out one or more in the following operation: between trunk module and live data streams receiver module 1002, set up end-to-end escape way, digital watermarking is examined, encrypts, inserted to the data flow that transmit.
Below in conjunction with a concrete example, the present invention is described further.
As shown in Figure 6, in an example, system of the present invention comprises: live data streams provides module 2001, live data streams receiver module 2002, relay management module 2003, the first trunk module 2004, the second trunk module 2104, the first relay management interface module 2005, the second relay management interface module 2105 and IPQAM2102.These modules can be passed through network connection each other.
Said system can be divided into programme televised live provides territory, programme televised live acceptance domain and programme televised live relay domain.Programme televised live provides and comprises in the A of territory that relay management interface module 2005, live data streams provide module 2001; Comprise relay management interface module 2105, live data streams receiver module 2002, IPQAM 2102 in the programme televised live acceptance domain B; The programme televised live relay domain comprises relay management module 2003, the first trunk module 2004, the second trunk module 2104.
It is the DVB-IP gateway that described live data streams provides module, behind the digital live broadcast code stream demultiplexing that is used for the ASI interface of cable television network is inputted, be converted to MPEG-2 TS/UDP programme televised live data flow, and send to each trunk module in the programme televised live relay domain.
After described live data streams receiver module 2002 receives the programme televised live data flow, the programme televised live data flow replication is forwarded to described IPQAM 2102, and described IPQAM 2102 receives the programme televised live data flow multiplexing that receives, the cable television network that modulation sends to the programme televised live acceptance domain for terminal.
Described programme televised live provides the territory that programme televised live is sent to programme televised live relay domain programme televised live data flow concrete steps to comprise:
Step 3001), programme televised live provides the first relay management interface module 2005 in territory to adopt http protocols to send the uplink relay requests to the relay management module 2003 of programme televised live relay domain, the URL address of this uplink relay request is: " http: the IP address/up of // relay management module 2003? srcip_0=10.0.0.2﹠amp; Srcport_0=2000﹠amp; Contentid=123456 ", up wherein represents the uplink relay request, and srcip_0 represents trunk module 2001 module I P, and srcport_0 represents the programme televised live data stream port, and contentid represents the programme televised live sign.
Step 3002), relay management module 2003 provides module 2001 minimum delaying policies to select the first trunk module 2004 according to the distance live data streams.
Step 3003), relay management module 2003 adopts Transmission Control Protocol to send and receive the request of programme televised live data flow to the first trunk module 2004, comprises in this request that live data streams provides the sign of the IP of module 2001 and port, programme televised live.
Step 3004), relay management module 2003 adopts http protocols to send the uplink relay information of selecting to the first relay management interface module 2005, the URL of this request be " http: the IP address/upinform of the // the first relay management interface module 2005? rip_0=10.0.0.3﹠amp; Rport_0=3000﹠amp; Contentid=123456 ", wherein, upinform represents the uplink relay notice, and rip_0 represents first purpose IP, and rport_0 represents first destination interface, and contentid represents the programme televised live sign.
Step 3005), the first relay management interface module 2005 adopts Transmission Control Protocol to provide module 2001 requests to send the programme televised live data flow to live data streams, comprises programme televised live sign, purpose IP, destination interface in this request.
Step 3006), live data streams provides module 2001 and the first trunk module 2004 to adopt udp protocol to send to the first trunk module 2004 the programme televised live data flow on DTLS (Datagram Transport Layer Security) secure transport layers or IPsec.
Step 3007), the first trunk module 2004 is monitored and is connected the employing udp protocol in safety at destination interface and receives the programme televised live data flow.
Described programme televised live acceptance domain comprises to the concrete steps of programme televised live relay domain acquisition request programme televised live:
Step 4001), the second relay management interface module 2105 of programme televised live acceptance domain adopts http protocols to send the requests of programme televised live data flow downlink relay to the relay management module 2003 of programme televised live relay domain, the URL of this downlink relay request is: " http: the IP address/down of // relay management module 2003? dstip_0=10.0.0.4﹠amp; Dstport_0=4000﹠amp; Contentid=123456 ", wherein, down represents the downlink relay request, and dstip_0 represents first destination address, and dstport_0 represents first destination interface, and contentid represents the programme televised live sign.
Step 4002), relay management module 2003 is selected the second trunk module 2104 according to distance live data streams receiver module 2002 nearest principles;
Step 4003), relay management module 2003 adopts http protocols to send the downlink relay information of selecting to the second relay management interface module 2105, the URL of this downlink relay information be " http: // relay management interface module 2105IP address/downinform? rip_0=10.0.0.5﹠amp; Rport_0=5000﹠amp; Contentid=123456 ", wherein, downinform represents the uplink relay notice, and rip_0 represents first trunk module IP, and rport_0 represents first trunk module port, and contentid represents the programme televised live sign.
Step 4004), notify selected the second trunk module 2104 to obtain described programme televised live data flow from the first trunk module 2004 with programme televised live data flow by relay management module 2003, relay management module 2003 adopts Transmission Control Protocol to send to copy to the trunk module 2104 of selecting and transmits the request that described programme televised live identifies 123456 corresponding programme televised live data flow, and the described Forward-reques information that copies comprises programme televised live sign, purpose IP, destination interface;
Step 4005), the second trunk module 2104 adopts udp protocol to send to live data streams receiver module 2002 the programme televised live data flow with live data streams receiver module 2002 on the DTLS secure transport layers.
After live data streams receiver module 2002 receives the programme televised live data flow, the programme televised live data flow replication is forwarded to IPQAM 2102, IPQAM 2102 is broadcast to user terminal after with the programme televised live data stream modulates.
It more than is the explanation to cross-domain system that programme televised live is provided of the present invention and associated method.Since this system adopted a programme televised live relay domain manage and the numerous management domains of relaying between the cross-domain live TV stream that provides, so this system possesses extensibility when increasing in the face of management domain number and programme televised live, and manageable.
In network shown in Figure 7, if the program among the user's request domain H among the F of territory, according to the first method of mentioning in the background technology, program data need to be through the path of H-I-J-K-F.If another user among the F of territory is the program among the request domain H again, according to the first method of mentioning in the background technology, corresponding program data need to pass through the path of H-I-J-K-F again.After adopting System and method for of the present invention, if with territory J as relay domain, then when the user of territory F asks corresponding data again, related data is as long as through the path of J-K-F, can greatly save bandwidth resources.Network is more complicated, and user's request is more, and the bandwidth resources that can save are also just more.
It should be noted last that above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although with reference to embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is made amendment or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (13)
1. cross-domain system that programme televised live is provided, it is characterized in that, comprise that live data streams provides module (1001), live data streams receiver module (1002), relay management module (1003), trunk module (1004), the first relay management interface module (1005) and the second relay management interface module (1105); Described live data streams provides module (1001) and the first relay management interface module (1005) to be positioned at programme televised live the territory is provided, described relay management module (1003) is positioned at the programme televised live relay domain with trunk module (1004), and described live data streams receiver module (1002) is positioned at the programme televised live acceptance domain with the second relay management interface module (1105); Wherein,
Described live data streams provides module (1001) to be used for providing the programme televised live data flow;
Described live data streams receiver module (1002) is used for receiving described programme televised live data flow;
Described relay management module (1003) is used for selecting at least one trunk module from described trunk module (1004), and the information of selected trunk module is transmitted to described the first relay management interface module (1005) or described the second relay management interface module (1105);
Described trunk module (1004) is used for module (1001) program receiving data being provided and sending data to described live data streams receiver module (1002) from described live data streams;
Described the first relay management interface module (1005) is used for sending relay request and receiving trunk information from this module to described relay management module (1003);
Described the second relay management interface module (1105) is used for receiving trunk information from described relay management module (1003).
2. the cross-domain system that programme televised live is provided according to claim 1, it is characterized in that, described live data streams provides the module programme televised live data flow that (1001) provide based on IP communication protocol, based on the programme televised live data flow of IP communication protocol by converted based on the programme televised live of DVB standard, or obtain by acquisition mode, or obtain by the mode of streamed files, or produce by copying the mode of transmitting IP programme televised live data flow.
3. the cross-domain system that programme televised live is provided according to claim 1, it is characterized in that, described trunk module (1004) has one or more, when described trunk module (1004) has when a plurality of, carry out networking between described a plurality of trunk module, the mode of networking comprises cascade network, P2P networking, monocycle networking, dual loop redundancy networking.
4. the cross-domain system that programme televised live is provided according to claim 1, it is characterized in that, described live data streams provides module (1001) can be the DVB-IP gateway, behind the digital live broadcast code stream demultiplexing of described DVB-IP gateway with the ASI interface input of cable television network, be converted to MPEG-2 TS/UDP programme televised live data flow.
5. the cross-domain system that programme televised live is provided according to claim 1, it is characterized in that described live data streams receiver module (1002) can also comprise to received programme televised live data flow the processing of shaping, error correction, multiplexing, demultiplexing.
6. realize cross-domain live method in the described cross-domain system that programme televised live is provided of one of claim 1-5 for one kind, comprising:
Provide the territory to send to the programme televised live relay domain from programme televised live the programme televised live data;
And the programme televised live data are sent to the programme televised live acceptance domain from the programme televised live relay domain.
7. method according to claim 6 is characterized in that, describedly provides the territory to send to the programme televised live relay domain from programme televised live the programme televised live data to comprise:
Step 101), described the first relay management interface module (1005) sends the request of programme televised live uplink relay to described relay management module (1003), this uplink relay request comprises that at least described live data streams provides the sign of the IP of module (1001) and port, programme televised live;
Step 102), after described relay management module (1003) receives the request of programme televised live uplink relay, select at least one trunk module (1004);
Step 103), described relay management module (1003) is to step 102) selected trunk module sends and receives the request of programme televised live data flow, this request comprises that at least live data streams provides the sign of the IP of module (1001) and port, programme televised live;
Step 104), described relay management module (1003) is according to the information of selected trunk module, send uplink relay information to described the first relay management interface module (1005), described uplink relay information comprises step 102) purpose IP, the destination interface of selected trunk module;
Step 105), described live data streams provides module (1001) collocating uplink trunk information, the step 102 that then comprises according to described uplink relay information) purpose IP, the destination interface of selected trunk module send to step 102 with the programme televised live data flow) selected trunk module;
Step 106), step 102) the programme televised live data flow is monitored and received to selected trunk module.
8. method according to claim 7 is characterized in that, in described step 102) in, when selecting trunk module, according to minimum delaying policy or trunk module minimum load strategy or be connected the maximum residual band-width tactics with trunk module and select trunk module.
9. method according to claim 7, it is characterized in that, in described step 105) in, described live data streams provides module (1001) collocating uplink trunk information to comprise that the first relay management interface module (1005) crosses the described live data streams of instruction notification with described uplink relay information exchange module (1001) is provided.
10. method according to claim 7, it is characterized in that, in described step 105) in, described live data streams provides module (1001) that the programme televised live data flow is sent to step 102) before the selected trunk module, also to carry out one or more in the following operation: provide module (1001) and step 102 in described live data streams) set up end-to-end escape way between the selected trunk module, digital watermarking is examined, encrypts, inserted to the data flow that transmit.
11. method according to claim 6 is characterized in that, describedly the programme televised live data are sent to the programme televised live acceptance domain from the programme televised live relay domain comprises:
Step 201), described the second relay management interface module (1105) sends the request of programme televised live downlink relay to described relay management module (1003), described downlink relay request comprises the purpose IP of described live data streams receiver module (1002) and destination interface, programme televised live sign at least;
Step 202), after described relay management module (1003) receives the request of programme televised live downlink relay, select at least one trunk module (1004);
Step 203), described relay management module (1003) is according to step 202) in the information of selected trunk module, send downlink relay information to described the second relay management interface module (1105), described downlink relay information comprises step 202 at least) IP and the port information of selected trunk module;
Step 204), described relay management module (1003) sends the request that described programme televised live identifies corresponding programme televised live data flow of transmitting that copies to selected trunk module, this copies the sign that Forward-reques comprises programme televised live at least, purpose IP and the destination interface of live data streams receiver module (1002);
Step 205), determining step 202) in selected trunk module whether received described programme televised live data flow, if receive, then carry out next step, otherwise, step 202) selected trunk module obtains the corresponding programme televised live data flow of sign of described programme televised live in, then carries out next step;
Step 206), step 202) in selected trunk module according to purpose IP, the destination interface of described live data streams receiver module (1002), copy to this module and to transmit described programme televised live data flow.
12. method according to claim 11, it is characterized in that, in described step 205) in, step 202) selected trunk module is before copying forwarding programme televised live data flow in to live data streams receiver module (1002), also can carry out one or more in the following operation: in step 202) in set up end-to-end escape way between selected trunk module and the live data streams receiver module (1002), digital watermarking is examined, encrypts, inserted to the data flow that transmit.
13. method according to claim 11, it is characterized in that, in described step 202) in, when selecting trunk module, according to minimum delaying policy or trunk module minimum load strategy or be connected the maximum residual band-width tactics with trunk module and select trunk module.
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| CN201210107006.XA CN103379088B (en) | 2012-04-12 | 2012-04-12 | A kind of system and method for cross-domain offer programme televised live |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108810564A (en) * | 2018-05-28 | 2018-11-13 | 北京浩科技有限公司 | Live broadcasting method and device |
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| CN1874488A (en) * | 2005-05-31 | 2006-12-06 | 宋虹 | Method for managing system of living broadcast of programs |
| CN101626387A (en) * | 2009-08-12 | 2010-01-13 | 中兴通讯股份有限公司 | System, method and terminal for treating media business |
| CN101634998A (en) * | 2008-07-16 | 2010-01-27 | 索尼株式会社 | Mthod and apparatus for managing media |
| US20120036215A1 (en) * | 2010-08-04 | 2012-02-09 | Laura Perryman | Optimized Data Stream Upload |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1874488A (en) * | 2005-05-31 | 2006-12-06 | 宋虹 | Method for managing system of living broadcast of programs |
| CN101634998A (en) * | 2008-07-16 | 2010-01-27 | 索尼株式会社 | Mthod and apparatus for managing media |
| CN101626387A (en) * | 2009-08-12 | 2010-01-13 | 中兴通讯股份有限公司 | System, method and terminal for treating media business |
| US20120036215A1 (en) * | 2010-08-04 | 2012-02-09 | Laura Perryman | Optimized Data Stream Upload |
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| CN108810564A (en) * | 2018-05-28 | 2018-11-13 | 北京浩科技有限公司 | Live broadcasting method and device |
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