CN102594775A - Method and system for transmitting streaming media - Google Patents
Method and system for transmitting streaming media Download PDFInfo
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- CN102594775A CN102594775A CN2011100046800A CN201110004680A CN102594775A CN 102594775 A CN102594775 A CN 102594775A CN 2011100046800 A CN2011100046800 A CN 2011100046800A CN 201110004680 A CN201110004680 A CN 201110004680A CN 102594775 A CN102594775 A CN 102594775A
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Abstract
The invention relates to a method and a system for transmitting streaming media. The method comprises the steps that a streaming media server sends a media stream carrying media packet size adaption information; a media forwarding server receives the media stream, and performs packet size adaption processing on the media stream according to the media packet size adaption information in the received media stream; and the media forwarding server forwards the media stream after packet size adaption processing. The method and the system for transmitting the streaming media in the present invention can improve the transmission efficiency of the network.
Description
Technical field
The present invention relates to the multi-medium data transmission technique field, be specifically related to a kind of in multimedia Real-Time transmission course adaptive multimedia data transmission method and the system of size that divide into groups.
Background technology
Along with the extensive use with multimedia technology of popularizing of network technology, the streaming media transmission technique that content of multimedia such as audio frequency, video, captions or animation transmit is in real time arisen at the historic moment.
Streaming media server is packaged as Media Stream to media contents such as audio frequency, video, captions or animations; Media Stream carries out the real-time continuous transmission with the form of dividing into groups on network; Client needn't wait for that whole download of media content finishes; Only need delay just can begin in several seconds or tens seconds to play, Media Stream is play while transmitting up to media content and is finished or the client hang up.The application flow media transport technology can significantly shorten the media play stand-by period, reduce the client-cache requirement.
Streaming Media is faced with the new application scenarios of across a network or heterogeneous network, and identical media stream will be supported in heterogeneous networks provides service.In order to promote the transmission quality that the end user experiences just needs to promote Media Stream, in the media flow transmission process, to transmit adaptively, the size (PacketSize) of dividing into groups is adaptive to be exactly the adaptive measure of a kind of transmission.When dividing into groups big or small adaptive bottom transmission link situation, can obtain optimum transport efficiency, be controlled at middle low degree to packet loss, can improve the bandwidth utilization rate simultaneously and not waste limited bandwidth resources, better service quality is provided with this,
Present IP (Internet Protocal; Internet Protocol) agreement is for realizing the method for big or small adaptive use segmentation of grouping and assembling; Give each IP packet only identifier of IP allocation of packets just, the header part also has segmentation markers and the displacement relevant with assembling with segmentation.The IP packet is when segmentation, and each section need comprise original identifier.But in order to raise the efficiency and alleviate the burden of router, Segmentation and Reassembly is provided by IP source end and destination usually, and router does not carry out the Segmentation and Reassembly of IP layer.
IPv6 (Internet Protocol Version 6; Internet Protocol Version6) agreement comprises a grading excursion value, one " more multistage " sign and an identification field through the segmentation extension header; Be used for source node the bag that length exceeds path mtu between source end and destination (Maximum Transmission Unit, MTU) is carried out segmentation.IPv6 only allows source node that bag is carried out segmentation, has simplified the processing of intermediate node to bag.
In sum, Media Stream from the source end when output grouping size confirm that in the across a network transmission or when heterogeneous network transmit, router can not divide into groups big or small adaptive, so can't obtain optimum transmission efficiency.
This patent proposes to above-mentioned Streaming Media transmission demand and problem just.
Summary of the invention
The technical problem that the present invention will solve provides a kind of flow-medium transmission method and system, to improve network transmission efficiency.
For solving above technical problem, the invention provides a kind of flow-medium transmission method, this method comprises:
Streaming media server sends Media Stream, wherein carries media packet size Adapted information;
The medium forwarding server receives said Media Stream, according to the size of the media packet in the Media Stream that receives Adapted information to the said Media Stream big or small adaptation processing of dividing into groups;
Said medium forwarding server is transmitted the Media Stream after the big or small adaptation processing of said grouping.
Further, said media packet size Adapted information comprises adaptive range information, load layout information and adaptive load information; Said adaptive range information comprises alternative corresponding MTU (MTU) of size of dividing into groups; Said load layout information comprises the every kind of big or small corresponding load grouping number of dividing into groups, and the load packet header and the load data locating information of each load grouping; Said adaptive load information comprises load header data and data length.
Further, when said Media Stream was scrambled data, said media packet size Adapted information also comprised and adds descrambling information, and the scrambled data that is used to through the size of dividing into groups after adaptive provides the descrambling information needed.
Further, said media packet size Adapted information utilization transmission packet header or data division carry.
Further; Comprise according to the said media packet size Adapted information big or small adaptation processing of dividing into groups: combine bottom transmission link state simultaneously according to said media packet size Adapted information; Media Stream to transmitting carries out segmentation or reorganization, accomplishes adaptation processing.
Further, carry the media packet size Adapted information of former media packet size Adapted information or renewal in the Media Stream that said medium forwarding server is transmitted; Or filtered out said media packet size Adapted information in the said Media Stream.
For solving above technical problem, the present invention also provides a kind of stream media transmission system, and this system comprises streaming media server and medium forwarding server, wherein:
Streaming media server is used to send Media Stream, wherein carries media packet size Adapted information;
The medium forwarding server comprises:
Receiver module is used to receive said Media Stream;
The adaptation processing module is used for according to the media packet size Adapted information of the Media Stream that receives the said Media Stream big or small adaptation processing of dividing into groups;
Forwarding module is used to transmit the Media Stream that divides into groups after the big or small adaptation processing.
Further, said media packet size Adapted information comprises adaptive range information, load layout information and adaptive load information; Said adaptive range information comprises alternative corresponding MTU (MTU) of size of dividing into groups; Said load layout information comprises the every kind of big or small corresponding load grouping number of dividing into groups, and the load packet header and the load data locating information of each load grouping; Said adaptive load information comprises load header data and data length.
The Media Stream that streaming media server sends in flow-medium transmission method of the present invention and the system carries media packet size Adapted information; In the network transmission process of Media Stream, the medium forwarding server provides the size of dividing into groups adaptive according to size Adapted information of the media packet in the Media Stream and link circuit condition, thereby obtains the optimum network efficiency of transmission.
Description of drawings
Fig. 1 is the sketch map of flow-medium transmission method of the present invention;
Fig. 2 is the sketch map of stream media transmission system of the present invention;
Fig. 3 is the instantiation sketch map of a communication system;
Fig. 4 describes media packet size Adapted information of the present invention and is placed on the example of transmitting in the independent stream;
Fig. 5 describes media packet of the present invention and is placed on the media packet size Adapted information example of transmitting in the independent stream;
Fig. 6 describes media packet size Adapted information of the present invention and is placed on the example that transmit in media delivery packet header;
Fig. 7 describes the adaptive handling process of executing medium forwarding server in the example of size of dividing into groups;
Fig. 8 describes media client program request flow process among the big or small adaptive embodiment that divides into groups.
Embodiment
Among the present invention, call the medium forwarding server to logic that the media transport layer forwarding capability is provided in the media flow transmission process or physical equipment.Through the medium forwarding server Media Stream being carried out real-time segmentation or assembling is to realize that the adaptive application layer of media packet size solves thinking.In the but existing media transmission protocol, MPEG (Moving Pictures Experts Group, Motion Picture Experts Group) TS (Transport Stream, MPTS) block length is fixed 188 bytes; RTP (Real-time Transport protocol, RTP) supports variable-length packets and stipulates various load formats that the medium forwarding server need be resolved the RTP load and carried out real-time segmentation or assembling according to load format.The medium forwarding server need support various coded format complexities high on the one hand; Real-time segmentation and assembling can influence the efficient of medium forwarding server on the other hand.
Through under the situation of scrambling, the medium forwarding server can not carry out segmentation arbitrarily or assembling to Media Stream, otherwise possibly influence the descrambling of code stream at the terminal at Media Stream.
Given this, the present invention provides a kind of flow-medium transmission method and system, and streaming media server sends Media Stream, wherein carries media packet size Adapted information; In the network transmission process of Media Stream, the medium forwarding server provides the size of dividing into groups adaptive according to size Adapted information of the media packet in the Media Stream and link circuit condition, thereby obtains the optimum network efficiency of transmission.
Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
As shown in Figure 1, flow-medium transmission method of the present invention comprises:
Step 101: streaming media server sends Media Stream, wherein carries media packet size Adapted information;
Media packet size Adapted information according to the invention includes but not limited to adaptive range information, load layout information and adaptive load information; When said Media Stream was scrambled data, said media packet size Adapted information also comprised and adds descrambling information.
Said media packet size Adapted information includes but not limited to following four category informations:
One, adaptive range information
Adaptive range information provides the big or small adaptive range describe that divides into groups, the adaptive total selection number of size that can supply to divide into groups, the MTU of every kind of selection.
Two, load layout information
The load layout information is selected according to the every kind of size of dividing into groups, and load grouping number is provided, and the load packet header and the load data locating information of each load grouping.
According to snap point the grouping size information is provided, supports multiple alignment (align) mode,, align according to video GOP, perhaps other modes such as according to the frame alignment.
When aliging according to frame, a media frame possibly split a plurality of groupings and transmitted, and load layout information indication media frame is split as what loads grouping, each load packet header and corresponding load data original position.When aliging according to video GOP, load layout information indication GOP is split as what loads grouping, each load packet header and corresponding load data original position.Original position is to be the byte offset of benchmark with the snap point, specifically describes correspondingly with the concrete transformat of media packet size information, does not limit here.
Three, adaptive load information
Prefabricated load header data and data length is provided.The load transformat of agreement is adopted in load packet header, and such as the load format of the serial transmission standard definition of the RTP of normal structure ietf definition, or other are not limit.
Four, add descrambling information
Only be applied to medium load is added the scene of descrambling.Transmission adds descrambling information, for the grouped data after adaptive through the size of dividing into groups provides the descrambling information needed.
According to existing Streaming Media host-host protocol, the Streaming Media that is carried on the bottom-layer network divides into groups to be made up of transmission packet header, load packet header and data three parts usually.
Can be positioned over said media packet size Adapted information in the transmission packet header and carry.For example expand to RTP and MPEG-TS.Existing standard media transmission protocol RTP represents two kinds of different transmission thinkings respectively with MPEG-TS.RTP supports elongatedly, and MPEG-2TS owing to propose early receives early stage transmission network technique influence to be defined as 188 fixed byte, along with development of internet technology to elongated direction evolution.The back literary composition is designated as TS ' to the elongated transmission means based on MPEG-2TS for the ease of setting forth the present invention.Through RTP packet header (according to RTP extension standards RTP packet header expansion (RTPHeader Extension) definition) and TS ' packet header (according to TS packet header extension standards transmission exclusive data (transport private data) definition) carried out field extension; In extended field, just can carry media packet size Adapted information, as follow-up shown in Figure 5.
Can also be positioned over data division to said media packet size Adapted information carries; For example, to TS ' transmission means, at PMT (Program Map Table; Program Map Table) increases a PID (ProgramIdentification; Program identification) the transmission medium big or small Adapted information stream that divides into groups transmits media packet size Adapted information through user-defined format, as follow-up shown in Figure 4.Can also be the redundant content in the said media packet size Adapted information such as adaptive scope, be carried among the PMT transmitting in the User Defined descriptor (Private descriptors) that big or small Adapted information flows to line description.
Enumerate the mode of carrying media packet size Adapted information in several kinds of concrete bands above, also can adopt other modes not limit.
Step 102: the medium forwarding server receives said Media Stream, according to the size of the media packet in the Media Stream that receives Adapted information to the said Media Stream big or small adaptation processing of dividing into groups;
According to the present invention, the medium forwarding server is used media packet size Adapted information and is provided and divide into groups fast and assemble adaption function.
Step 103: said medium forwarding server is transmitted the Media Stream after the big or small adaptation processing of said grouping.
It is adaptive to carry out Media layer by the medium forwarding server in the transmission network according to the media packet in said Media Stream size Adapted information.The medium forwarding server is discerned the adaptive requirement of the said size of dividing into groups such as the medium forwarding server that is positioned at network edge.Combine adaptive bottom transmission link situation then, carry media packet size Adapted information, Media Stream is carried out segmentation or reorganization, accomplish adaptation processing according to Media Stream.
The medium forwarding server can be selected transparent forwarding media packet size Adapted information in repeating process, also can revise media packet size Adapted information and transmit then, perhaps filters out media packet size Adapted information.
Corresponding to above method, the present invention also provides a kind of stream media transmission system, and is as shown in Figure 2, and this system comprises streaming media server and medium forwarding server, wherein:
Streaming media server is used to send Media Stream, wherein carries media packet size Adapted information;
The medium forwarding server comprises:
Receiver module is used to receive said Media Stream;
The adaptation processing module is used for according to the media packet size Adapted information of the Media Stream that receives the said Media Stream big or small adaptation processing of dividing into groups;
Forwarding module is used to transmit the Media Stream that divides into groups after the big or small adaptation processing.
Further, said media packet size Adapted information comprises adaptive range information, load layout information and adaptive load information; Said adaptive range information comprises alternative corresponding MTU (MTU) of size of dividing into groups; Said load layout information comprises the every kind of big or small corresponding load grouping number of dividing into groups, and the load packet header and the load data locating information of each load grouping; Said adaptive load information comprises load header data and data length.
Further, when said Media Stream was scrambled data, said media packet size Adapted information also comprised and adds descrambling information, and the scrambled data that is used to through the size of dividing into groups after adaptive provides the descrambling information needed.
Said media packet size Adapted information can but be not limited to utilize transmission packet header or data division to carry.
Comprise according to the said media packet size Adapted information big or small adaptation processing of dividing into groups: combine bottom transmission link state simultaneously according to said media packet size Adapted information, the Media Stream that transmit is carried out segmentation or reorganization, accomplish adaptation processing.
Carry the media packet size Adapted information of former media packet size Adapted information or renewal in the Media Stream that said medium forwarding server is transmitted; Or filtered out said media packet size Adapted information in the said Media Stream.
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Fig. 3 has provided the instantiation of a communication system, wherein comprises streaming media server 10 in the network 1, router one 1, and router one 2a and medium forwarding server 12b comprise router one 3 in the network 2, comprise router one 4 in the network 3., this communication system is used for the Network Transmission of grouping data such as audio frequency, video, captions, data and transmits.This communication system network layer uses the IP agreement, and data link layer adopts DWDM (Dense Wavelength Division Multiplexing, intensive multiplexed optical wave is used) or ATM (Asynchronous Transfer Mode, asynchronous transfer mode) etc. not to limit.
Media Stream is following in the forwarding step of this communication system:
Steps A, in network 1, streaming media server 10 is the various Media Streams of output in real time.The link configuration of streaming media server 10 is for can transmit the network packet of 1500 byte longs at least.
Fig. 4 and Fig. 5 provide a kind of media packet size Adapted information and are placed on the example of transmitting in the independent stream.Example adopts elongated TS ' the media delivery form based on MPEG-2TS.
Fig. 4 describes the media flow transmission situation:
1, to comprise program number (program_number) be the program of 0x0100 for 0x0001, PID to the PAT of TS ' (Program Association Table, Program Association Table).
2, PID is the PMT of the flow transmission program 0x0001 of 0x0100 among the TS ', and PMT comprises two streams:
2-1, stream type (stream_type) are that 0x1B, PID are the H.264 standard video stream of 0x0111; With:
2-2, stream type are that 0x80, PID are the user-defined type of 0x0112, are used for media packet size Adapted information type here.
3, PID is TS ' the bag transmitting video-frequency flow of 0x0111;
4, PID is TS ' the bag transmission medium of the 0x0112 big or small Adapted information stream that divides into groups;
5, be that the media packet size Adapted information that corresponding PID is 0x0112 is inserted in the snap point front of 0x0111 at PID.If snap point adopts frame boundaries, then at one of the insertion of first bit transmission of each frame of video of 0x1B type or several to the big or small Adapted information of media packet that should frame of video.
Fig. 5 provides the Adapted information format sample, and the concrete structure definition is as shown in table 1 below:
Table 1
The said structure definition comprises following information:
Adaptive range information: MTU_num and mtu field;
Load layout information: the field during second For circulates;
Adaptive load information: header_len and header_data_byte field are pointed to load packet header; Byte between payload_start_offset and the payload_end_offset is load;
Scramble information: is_conditional_access field.If value 1 presentation medium through scrambling, does not allow to carry out any segmentation or combination.
Accompanying drawing 6 provides a kind of media packet size Adapted information and is placed on the example that transmit in media delivery packet header.Be with the difference of accompanying drawing 4:
1, to have only stream type be that 0x1B, PID are the Media Stream of 0x0111 to the PMT of TS ', and media packet size Adapted information is placed in the TS ' packet header of video flowing.
2, be that the snap point of 0x0111 carries media packet size Adapted information (do not show in this point diagram that the method for expansion is a standard in TS ' packet header, and information field has embodiment at Fig. 5 and table 1, repeat no more) here at PID.If snap point is a frame boundaries, carry media packet size Adapted information in the packet header of the TS ' bag that comprises each first bit of frame of video.It is suitable equally that accompanying drawing 5 provides Adapted information form PacketSizeAdaptation_Private_data, is applied to also need aspect byte length, be optimized here.
Step B, the Media Stream router one 1 of flowing through is given router one 2a media flow transmission, and router one 2a receives Media Stream and is transmitted to the 12b medium forwarding server with node;
Step C, medium forwarding server 12b divide into groups big or small adaptive according to the MTU or the link circuit condition of network 2 and network 3 to Media Stream.
Suppose network 2 towards the terminal be mobile hand-held devices such as 15a, 15b, MTU is configured to 500 bytes; Network 3 is towards PC and television equipments such as 15d, 15e, and MTU is configured to 1000 bytes; 15c is a HDTV equipment, and MTU is configured to 1500 bytes.If media packet size Adapted information provides 250 bytes, 500 bytes, 1000 bytes, four kinds of MTU of 1500 bytes to select, the MTU after adaptive is respectively 500 bytes, 1000 bytes to the original media stream of 1500 bytes through medium forwarding server 12b so.Towards 15c, medium forwarding server 12b need not to divide into groups big or small adaptive.
Step D, the Media Stream after adaptive are transferred to the router one 3 of network 2 and the router one 4 of network 3 respectively through router one 2a;
Step e, router one 3 are transferred to network node 15a and 15b to Media Stream QoS, and router one 4 is transferred to network node 15d and 15e to Media Stream QoS, carry out media play.
Fig. 7 has described the handling process of Streaming Media forwarding server, and process is following:
703a, the programme information of filtration media stream also is cached in this locality;
703b according to link MTU, selects suitable MTU from adaptive range information (like MTU_num the table 1 and mtu field);
The MTU that 703c, basis are fit to confirms load layout information (navigating to second For circulation in the table 1);
The load layout information that 703d, basis are confirmed is confirmed adaptive load: carry out the 3rd For circulation in oriented second For circulation successively.Read header_len and header_data and obtain load packet header, read bytepayload_start_offset and payload_end_offset obtains load from media data;
703e: segmentation is carried out in adaptive load or be assembled into complete one by one transmission package giving the bottom-layer network forwarding according to the load layout information;
Whether step 704, medium forwarding server 12b detect programme information changes, as does not change, and then execution in step 707, otherwise execution in step 705;
Step 705: the programme information that buffer memory changes, send the programme information that upgrades;
Step 705, medium forwarding server 12b are transmitted the Media Stream after adaptive, filter out media packet size Adapted information when efficiency of transmission is transmitted in order to improve.
Accompanying drawing 8 is described client program request flow process under the IPTV multicast live broadcast service scene.Process is following:
Step 801, client 15a select the IPTV multicast live;
Step 802, client 15c add multicast group;
Step 803, router one 2a notice medium forwarding server 12b;
Step 804, medium forwarding server 12b send buffer memory because of the adaptive programme information that changes of size that divides into groups;
Step 805, client 15c are according to programme information initialization decode resources;
The code stream after adaptive is transmitted to router one 2a the size of dividing into groups for step 806, medium forwarding server 12b;
Step 807, router one 2a are transmitted to the 15c client to Media Stream;
Step 808, client 15c decode to the multicast Media Stream that receives and appear.
Flow-medium transmission method and system that the present invention proposes, it is big or small adaptive on the medium forwarding unit, to carry out the Media layer grouping by the Media Stream in-band information, is applicable to the scene of transmission of Streaming Media across a network and heterogeneous network transmission, can effectively promote efficiency of transmission.
Here it is pointed out that the specific embodiment among the present invention just enumerated indivedual instance of the present invention, use design philosophy of the present invention and any equivalent transformation thereof to realize flow-medium transmission method and system, all should belong to protection scope of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (12)
1. a flow-medium transmission method is characterized in that, this method comprises:
Streaming media server sends Media Stream, wherein carries media packet size Adapted information;
The medium forwarding server receives said Media Stream, according to the size of the media packet in the Media Stream that receives Adapted information to the said Media Stream big or small adaptation processing of dividing into groups;
Said medium forwarding server is transmitted the Media Stream after the big or small adaptation processing of said grouping.
2. the method for claim 1 is characterized in that: said media packet size Adapted information comprises adaptive range information, load layout information and adaptive load information; Said adaptive range information comprises alternative corresponding MTU (MTU) of size of dividing into groups; Said load layout information comprises the every kind of big or small corresponding load grouping number of dividing into groups, and the load packet header and the load data locating information of each load grouping; Said adaptive load information comprises load header data and data length.
3. the method for claim 1 is characterized in that: when said Media Stream was scrambled data, said media packet size Adapted information also comprised and adds descrambling information, and the scrambled data that is used to through the size of dividing into groups after adaptive provides the descrambling information needed.
4. the method for claim 1 is characterized in that: said media packet size Adapted information utilization transmission packet header or data division carry.
5. the method for claim 1; It is characterized in that: comprise according to the said media packet size Adapted information big or small adaptation processing of dividing into groups: combine bottom transmission link state simultaneously according to said media packet size Adapted information; Media Stream to transmitting carries out segmentation or reorganization, accomplishes adaptation processing.
6. the method for claim 1 is characterized in that, carries the media packet size Adapted information of former media packet size Adapted information or renewal in the Media Stream that said medium forwarding server is transmitted; Or filtered out said media packet size Adapted information in the said Media Stream.
7. a stream media transmission system is characterized in that, this system comprises streaming media server and medium forwarding server, wherein:
Streaming media server is used to send Media Stream, wherein carries media packet size Adapted information;
The medium forwarding server comprises:
Receiver module is used to receive said Media Stream;
The adaptation processing module is used for according to the media packet size Adapted information of the Media Stream that receives the said Media Stream big or small adaptation processing of dividing into groups;
Forwarding module is used to transmit the Media Stream that divides into groups after the big or small adaptation processing.
8. system as claimed in claim 7 is characterized in that: said media packet size Adapted information comprises adaptive range information, load layout information and adaptive load information; Said adaptive range information comprises alternative corresponding MTU (MTU) of size of dividing into groups; Said load layout information comprises the every kind of big or small corresponding load grouping number of dividing into groups, and the load packet header and the load data locating information of each load grouping; Said adaptive load information comprises load header data and data length.
9. system as claimed in claim 7 is characterized in that: when said Media Stream was scrambled data, said media packet size Adapted information also comprised and adds descrambling information, and the scrambled data that is used to through the size of dividing into groups after adaptive provides the descrambling information needed.
10. system as claimed in claim 7 is characterized in that: said media packet size Adapted information utilization transmission packet header or data division carry.
11. system as claimed in claim 7; It is characterized in that: comprise according to the said media packet size Adapted information big or small adaptation processing of dividing into groups: combine bottom transmission link state simultaneously according to said media packet size Adapted information; Media Stream to transmitting carries out segmentation or reorganization, accomplishes adaptation processing.
12. system as claimed in claim 7 is characterized in that, carries the media packet size Adapted information of former media packet size Adapted information or renewal in the Media Stream that said medium forwarding server is transmitted; Or filtered out said media packet size Adapted information in the said Media Stream.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100046800A CN102594775A (en) | 2011-01-11 | 2011-01-11 | Method and system for transmitting streaming media |
| PCT/CN2012/070174 WO2012094980A1 (en) | 2011-01-11 | 2012-01-10 | Method and system for transmitting streaming media, and media forwarding server |
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| CN2011100046800A CN102594775A (en) | 2011-01-11 | 2011-01-11 | Method and system for transmitting streaming media |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253771A (en) * | 2005-08-30 | 2008-08-27 | 汤姆森许可贸易公司 | Cross layer optimizing capable of extending video frequency multicasting for IEEE802.11 wireless local area network |
| CN101494655A (en) * | 2009-03-12 | 2009-07-29 | 中国电信股份有限公司 | RTP distributed stream media service system and method |
| US8488582B2 (en) * | 2008-06-12 | 2013-07-16 | Alcatel Lucent | Minimal GAN RTP packet length via multi-level header compression |
-
2011
- 2011-01-11 CN CN2011100046800A patent/CN102594775A/en active Pending
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- 2012-01-10 WO PCT/CN2012/070174 patent/WO2012094980A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253771A (en) * | 2005-08-30 | 2008-08-27 | 汤姆森许可贸易公司 | Cross layer optimizing capable of extending video frequency multicasting for IEEE802.11 wireless local area network |
| US8488582B2 (en) * | 2008-06-12 | 2013-07-16 | Alcatel Lucent | Minimal GAN RTP packet length via multi-level header compression |
| CN101494655A (en) * | 2009-03-12 | 2009-07-29 | 中国电信股份有限公司 | RTP distributed stream media service system and method |
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| WO2012094980A1 (en) | 2012-07-19 |
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Application publication date: 20120718 |