CN101399836A - Stream media service implementation method and apparatus - Google Patents
Stream media service implementation method and apparatus Download PDFInfo
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- CN101399836A CN101399836A CN200810169489.XA CN200810169489A CN101399836A CN 101399836 A CN101399836 A CN 101399836A CN 200810169489 A CN200810169489 A CN 200810169489A CN 101399836 A CN101399836 A CN 101399836A
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- streaming media
- media server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
- H04L65/612—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio for unicast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a method and a device for realizing stream media business, wherein, the method comprises the following steps: a radio bearer between user equipment and a core network is established by a radio data card; the user equipment is connected with a stream media server by the established radio bearer; the user equipment receives stream media data flow from the stream media server, and the stream media data flow is broadcasted. The user experience can be improved by the invention.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of streaming media service implementation method and device.
Background technology
Streaming Media is the multimedia file of a kind of application stream technology in transmission over networks.So-called stream technology is exactly that continuous image and acoustic information are placed on the Website server after overcompression is handled, allow the user watch while downloading, to listen to, and the network transmission technology that just can watch after need not etc. on the machine that whole compressed file downloads to oneself.Streaming Media has following characteristics:
1, playing audio-video and content of multimedia in real time also can carry out program request to it, have interactivity;
2, by using buffer technology, download on the limit, and play on the limit;
3, client reception, processing and files in stream media of playback, but this document is not resident in client, does not take the memory space of client, and Streaming Media is handled and is played immediately and is eliminated.
Streaming Media is a utilization bandwidth varying technology, the media formats of playing on the internet with the transmission means of " stream ", as audio frequency, video or multimedia file, make people can the bandwidth environment from 28kbit/s to 1200kbit/s under continuous high quality audio and the video frequency program of online appreciation.
At present, stream media technology has been widely used in the every aspect of information services such as the multimedia news briefing in the Internet, online live, the web advertisement, ecommerce, video request program, tele-medicine, network radio station, real-time video meeting.
The circulation way of Streaming Media can be divided into clean culture, broadcasting and multicast, and wherein, clean culture is meant needs to set up an independent data channel between client and media server, and the packet of sending from a station server can only send a client computer to.Broadcasting is meant the passive receiving stream media of user.In broadcasting process, the client receiving stream media, but can not the control flows medium.Multicast (multicast): a kind of network with multicast capability of ip multicast technique construction allows router once packet to be copied on a plurality of passages.Adopt the multicast mode, the separate unit server can send continuous data stream simultaneously and not have time-delay hundreds of thousands platform client computer.Media server only need send a packets of information, rather than a plurality of; All send the client of request and share same packets of information.
Broadcast mode by streaming medium content is divided into downloading and playing, program request and live.
Downloading and playing: refer to that the user downloads streaming medium content and store in the local terminal, can be chosen in random time then and play.
Streaming media on demand: refer to the content provider in advance to one section content of multimedia edit, compressed encoding, form the file of specified format, store on the streaming media server then.The user selects the content file on the streaming media server to play as required.
Live streaming media: during terminal player playing stream media live content, the broadcast of content is constantly identical with the generation of content source incident constantly, be that the Streaming Media encoder server carries out compressed encoding in real time to content source, send to user terminal via streaming media server.
The agreement of streaming media service is formed as shown in Figure 1:
Host-host protocol comprises: HTTP/TCP/UDP/IP.
HTTP is mainly used in the discovery streaming medium content, obtains the URL and the MIME parameter of RTSP server, also can directly obtain SDP file.HTTP also can be used for contents such as transport stream medium still image and text, and is used for the audio frequency and video download.Http protocol requires to meet RFC2616 and 3GPP TS 26.234.MIME is used for the file type of flag transmission, is mainly used in the startup of player in Streaming Media.
Real-time stream media protocol (Real Time Streaming Protocol abbreviates RTSP as) is mainly by DESCRIBE, SETUP, and PLAY, control messages such as PAUSE and TEARDOWN realize operations such as the session foundation, broadcast, time-out, termination of Streaming Media.The RTSP protocol requirement meets RFC2326 and 3GPP TS 26.234.
RTP (Real Time Transport Protocol abbreviates RTP as) is mainly used in the media contents such as video, audio frequency and voice in the transport stream medium.Real-time Transport Protocol requires to meet RFC3550 and 3GPP TS 26.234.
RTCP Real-time Transport Control Protocol (Real Time Control Protocol abbreviates RTCP as) is mainly used in flow control and congested control between the server and client side.During the RTP session, each participant periodically transmits the RTCP bag, comprises the quantity of data packets that has sent, the statistical informations such as quantity of data packets of losing in the RTCP bag, and server can utilize these information dynamically to change transmission rate.RTP and RTCP are used, and can make the efficiency of transmission optimization with effective feedback and minimum expense.Rtcp protocol requires to meet RFC3550 and 3GPP TS 26.234.
Session Description Protocol (Session Description Protocol, abbreviate SDP as) be a kind of form (agreement) that is used for conversation description, it is not a host-host protocol, be not included among the encoding and decoding of medium yet, but being used for the notification protocol of pass-along message between differing transmission protocols, its main purpose is to solve Multimedia session notice, invitation and conversation initialization work.SDP file both can be by having passed to player to user HTTP request responding, also can be by user RTSP DESCRIBE request responding is passed to player.The SDP protocol requirement meets RFC2327 and 3GPP TS 26.234.
At present, Wideband Code Division Multiple Access (WCDMA) inserts (Wide Code Division Multiple Access, abbreviating WCDMA as) technology obtained large-scale application in the whole world, a significant advantage of WCDMA technology is exactly that packet domain (Packet Switching at a high speed can be provided, abbreviate PS as) business, its high speed downlink packet inserts (High Speed Downlink PacketAccess abbreviates HSDPA as) downstream rate can reach 7.2M.At the high-rate characteristics in PS territory, the WCDMA wireless data card has obtained using widely.
But the function of presently used wireless data card is too simple, and main functional limitation is in as MODEM online, and simple functions such as SMS and voice call.The WCDMA network is when providing high speed, also provide abundant application to the user, and present wireless data card user can't be enjoyed these abundant application owing to the single of network interface card function, enjoy these if desired and use the terminal that just needs to buy special use, increased user's expense.
Especially this business of Streaming Media, its application at present only is confined to phone (landline telephone, mobile phone etc.), and can not expand to personal computer (Personal Computer abbreviates PC as) terminal (desktop computer or notebook etc.).
At present, simple at the wireless data card function and problem that can't compatible multiple application does not propose effective solution as yet.
Summary of the invention
The present invention aims to provide a kind of streaming media service implementation method and device, to solve simple and the problem that can't compatible multiple application of the wireless data card function that exists in the correlation technique.
According to an aspect of the present invention, provide a kind of streaming media service implementation method.
Streaming media service implementation method according to the embodiment of the invention comprises: subscriber equipment is set up radio bearer by wireless data card and core net; Subscriber equipment connects according to radio bearer and the streaming media server set up; Subscriber equipment receives the streaming media data stream from streaming media server, and play stream media data stream.
Preferably, before the processing that subscriber equipment connects according to radio bearer of setting up and streaming media server, this method also comprises: the subscriber equipment reception is from the Session Description Protocol file of the streaming media data stream of streaming media server.
Preferably, subscriber equipment specifically comprises with the processing that streaming media server connects according to the radio bearer of setting up: subscriber equipment is set up real-time stream media protocol according to Session Description Protocol file and streaming media server and is connected.
Preferably, the processing that subscriber equipment receives from the streaming media data stream of streaming media server specifically comprises: subscriber equipment is connected by setting up real-time stream media protocol with streaming media server, carries out live transmission protocol port with streaming media server and consults; Subscriber equipment receives the RTP data from streaming media server.
According to a further aspect in the invention, also provide a kind of streaming media service implement device.
Streaming media service implement device according to the embodiment of the invention comprises: radio bearer is set up module, is used for setting up radio bearer by wireless data card and core net; Connect and set up module, be used for subscriber equipment and connect according to radio bearer and the streaming media server set up; Receive and playing module, be used for the streaming media data stream of subscriber equipment reception from streaming media server, and play stream media data stream.
Preferably, connect and to set up module and further comprise: Session Description Protocol file receiver module is used to receive the Session Description Protocol file from the streaming media data stream of streaming media server; Real-time stream media protocol connects sets up module, is used for setting up real-time stream media protocol according to the Session Description Protocol file that receiver module receives with streaming media server and is connected.
Preferably, reception and playing module specifically comprise: the port negotiation module is used for carrying out live transmission protocol port with streaming media server and consults; Data reception module is used to receive the RTP data from streaming media server; Playing module is used to play the RTP data.
According to technique scheme of the present invention, realize streaming media service by using wireless data card as the implementation tool of radio bearer, can play in the play area of computer PC software from the streaming media data stream that wireless data card receives, thereby improved user's experience, and saved user's expense.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the stream media protocol structured flowchart according to correlation technique;
Fig. 2 is the flow chart according to the streaming media service implementation method of the embodiment of the invention;
Fig. 3 is the flow chart based on the preferred process of the streaming media service of RTSP/RTP according to the inventive method embodiment;
Fig. 4 is the block diagram according to the streaming media service implement device of the embodiment of the invention;
Fig. 5 is the structured flowchart that wireless network card is realized the flow medium function agreement that passes through according to the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Functional overview
Main thought of the present invention is: realize streaming media service by using wireless data card as the implementation tool of radio bearer, and will resolve the play area broadcast of back, thereby can realize the function of streaming media service at PC from the streaming media data stream that wireless network card receives at computer PC software.
Method embodiment
According to the embodiment of the invention, provide a kind of streaming media service implementation method.
Fig. 2 is the flow chart according to the streaming media service implementation method of the inventive method embodiment.As shown in Figure 2, this method comprises (step S202-S206):
Step S202, subscriber equipment is set up radio bearer by wireless data card and core net;
Need to support PS territory call business for wireless data card (wireless network card), and need a interface module, be responsible for resolving the order of PC software transmission and the data of transmission and receiving stream media with network interface card PC software in the network interface card side.On the PC of network interface card software, need provide operation-interface to the user, the user can initiate streaming media service by operation interface.And can resolve the back from the streaming media data stream that wireless network card receives plays in the play area of computer PC software.
Step S204, subscriber equipment connects according to radio bearer and the streaming media server set up;
Step S206, subscriber equipment receives the streaming media data stream from streaming media server, and play stream media data stream.
Below being example based on the program request of RTSP/RTP, live class streaming media service flow process, describe the concrete processing procedure of step S204 and step S206 in detail, Fig. 3 is the flow chart based on the preferred process of the streaming media service of RTSP/RTP according to the inventive method embodiment.
As shown in Figure 3, once successful call flow mainly comprises following four-stage: content is found, connect and set up, content play be connected termination, as shown in Figure 3, this flow process comprises following processing:
Content is found
Step S302, user operate and trigger the foundation that network interface card is finished radio bearer.For example, browsing page.
Step S304, the user clicks a certain streaming medium content on the door by PC, and browser is initiated HTTP Get order (containing User Agent, the user agent) to door.If browser links from the RTSP that Web server obtains streaming medium content by HTTP 200OK response message, the user clicks this link, then the PC software activation DST PLAYER of network interface card.
If browser is by HTTP 200OK response message, the HTTP that obtains SDP file from Web server links, and the user clicks this link, and then the PC software of network interface card is to streaming media server request SDP file.Server returns SDP file, obtains the RTSP link of streaming medium content, the PC software activation DST PLAYER of network interface card.
Connect and set up
Step S306 obtains session description information (DESCRIBE).
The player of PC software side is by the DESCRIBE command request SDP of RTSP agreement, server provides the descriptor SDP file of streaming medium content in replying, the text message of SDP is told the information of player Multimedia session, wherein mainly comprise: protocol version, creator and session identifier, session name, session activation time, media name transport address and some other information.If server returns SDP file by http response, player no longer sends the DESCRIBE request.
Step S308 sets up Streaming Media and connects (SETUP).
The player of PC software side is set up RTSP according to the information of SDP with media server and is connected, and must comprise host-host protocol (RTP) port numbers of session identification, player in the SETUP message.Media server is correctly received the RTP port numbers that response server is provided after this information, finally finishes the dynamic negotiation of RTP port.
Content play (PLAY)
Step S310, the player of PC software side sends play command among the RTSP to server end, must comprise session identification in the PLAY message, and the time starting point, media server session identification, media play time.
Step S312, media server is by the player transfers media content of RTP to PC software.This moment, network interface card was the function of a radio bearer, with all RTP data that receive, all was forwarded to the DST PLAYER of PC software.After PC software receives the RTP data of Streaming Media, to its broadcast of decoding.
Connect and end (TEARDOWN)
Step S314, after the Streaming Media normal play is finished, when perhaps the user initiatively ends broadcast or initiatively closes player (not comprising that the user suspends broadcast), the DST PLAYER of PC software side all must send abort commands in the RTSP agreement to server, comprise information such as session identification, make the 200OK response after server end is received.
By the foregoing description, realize streaming media service by using wireless data card as the implementation tool of radio bearer, can realize streaming media service at PC.
Device embodiment
According to embodiments of the invention, also provide a kind of streaming media service implement device.
Fig. 4 is the block diagram according to the streaming media service implement device of the embodiment of the invention, as shown in Figure 4, comprises according to the streaming media service implement device of the embodiment of the invention:
Radio bearer is set up module 10, is used for setting up radio bearer by wireless data card and core net;
Connect and set up module 20, be connected to radio bearer and set up module 10, be used for subscriber equipment and connect according to radio bearer and the streaming media server set up;
Receive and playing module 30, be connected to connect and set up module 20, be used for the streaming media data stream of subscriber equipment reception from streaming media server, and play stream media data stream.
In specific implementation process, connection is set up module 20 and can be comprised: Session Description Protocol file receiver module (not shown) is used to receive the Session Description Protocol file from the streaming media data stream of streaming media server; Real-time stream media protocol connects sets up the module (not shown), is used for setting up real-time stream media protocol according to the Session Description Protocol file that receiver module receives with streaming media server and is connected.
And reception and playing module 30 specifically comprise: port negotiation module (not shown) is used for carrying out live transmission protocol port with streaming media server and consults; The data reception module (not shown) is used to receive the RTP data from streaming media server; The playing module (not shown) is used to play the RTP data.
To describe the deployment scheme of above-mentioned each module in the PC terminal below in detail.Fig. 5 is the structured flowchart that wireless network card is realized the flow medium function protocol stack that passes through according to the embodiment of the invention.
As shown in Figure 5, in this implementation, the implementation of Streaming Media is divided for 4 major parts according to module.Part A is for being transplanted to the multimedia function of PC side from the end side of supporting Streaming Media, part B can utilize the protocol stack on the network interface card to realize according to actual conditions in principle, considers the treatment effeciency in the application process, advises that this part is also placed in the PC side and realizes.Portion C is in order to realize the control interface module of the same PC side that flow medium function increases on network interface card.Part D is that the radio bearer of network interface card itself is set up protocol section.
Part A comprises: module 1 (video, audio frequency, voice are resolved and play and link corresponding status report function), module 2 (fulfillment capability exchange, scene description, still image, bitmap, polar plot, text, synchronizing text, Composite tone), module 3 (finishing control messages, conversation description (SDP)).This part content need realize in the PC of wireless network card correspondence software side.
Part B is the protocol section of Streaming Media, comprises RTP/RTCP, HTTP and RTSP.This part protocol contents can be placed on the PC software side and realize, also can be placed on the network interface card and realize, considers the treatment effeciency in the application process, puts it in this programme in the PC software and realizes.
Portion C is the host-host protocol part, comprises UDP, TCP and IP protocol section.This part can utilize network interface card prior protocols stack, also can use independent protocol stack in PC software.Consider the treatment effeciency in the application process, all use independent UDP, TCP and IP agreement in the PC software side.
Part D mainly is the network interface card control interface module that the control command that sends for the PC side that increases in order to cooperate the PC side to realize flow medium function is resolved.
Part E is the functional module of network interface card itself.
To sum up, according to technique scheme of the present invention, realize streaming media service by using wireless data card as the implementation tool of radio bearer, can play in the play area of computer PC software from the streaming media data stream that wireless data card receives, thereby improved user's experience, and saved user's expense.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a streaming media service implementation method is characterized in that, comprising:
Subscriber equipment is set up radio bearer by wireless data card and core net;
Described subscriber equipment connects according to described radio bearer and the streaming media server set up;
Described subscriber equipment receives the streaming media data stream from described streaming media server, and plays described streaming media data stream.
2. method according to claim 1 is characterized in that, before the processing that described subscriber equipment connects according to the described radio bearer of setting up and described streaming media server, described method also comprises:
Described subscriber equipment receives the Session Description Protocol file from the described streaming media data stream of described streaming media server.
3. method according to claim 2 is characterized in that, described subscriber equipment specifically comprises according to the processing that the described radio bearer of setting up and described streaming media server connect:
Described subscriber equipment is set up real-time stream media protocol according to described Session Description Protocol file with described streaming media server and is connected.
4. method according to claim 3 is characterized in that, the processing that described subscriber equipment receives from the streaming media data stream of described streaming media server specifically comprises:
Described subscriber equipment is connected by setting up real-time stream media protocol with described streaming media server, carries out live transmission protocol port with described streaming media server and consults;
Described subscriber equipment receives the RTP data from described streaming media server.
5. a streaming media service implement device is characterized in that, comprising:
Radio bearer is set up module, is used for setting up radio bearer by wireless data card and core net;
Connect and set up module, be used for described subscriber equipment and connect according to described radio bearer and the streaming media server set up;
Receive and playing module, be used for the streaming media data stream of described subscriber equipment reception, and play described streaming media data stream from described streaming media server.
6. device according to claim 5 is characterized in that, described connection is set up module and further comprised:
Session Description Protocol file receiver module is used to receive the Session Description Protocol file from the described streaming media data stream of described streaming media server;
Real-time stream media protocol connects sets up module, is used for setting up real-time stream media protocol according to the described Session Description Protocol file that described receiver module receives with described streaming media server and is connected.
7. device according to claim 6 is characterized in that, described reception and playing module specifically comprise:
The port negotiation module is used for carrying out live transmission protocol port with described streaming media server and consults;
Data reception module is used to receive the RTP data from described streaming media server;
Playing module is used to play described RTP data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810169489.XA CN101399836A (en) | 2008-10-21 | 2008-10-21 | Stream media service implementation method and apparatus |
| PCT/CN2009/073847 WO2010045830A1 (en) | 2008-10-21 | 2009-09-09 | Method and apparatus for implementing stream media service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810169489.XA CN101399836A (en) | 2008-10-21 | 2008-10-21 | Stream media service implementation method and apparatus |
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| CN200810169489.XA Pending CN101399836A (en) | 2008-10-21 | 2008-10-21 | Stream media service implementation method and apparatus |
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| CN (1) | CN101399836A (en) |
| WO (1) | WO2010045830A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010045830A1 (en) * | 2008-10-21 | 2010-04-29 | 中兴通讯股份有限公司 | Method and apparatus for implementing stream media service |
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| CN111629250A (en) * | 2020-05-28 | 2020-09-04 | 海信视像科技股份有限公司 | Display device and video playing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1326414C (en) * | 2004-08-27 | 2007-07-11 | 华为技术有限公司 | System for realizing circuit field moving stream media requesting to broadcast and method thereof |
| CN101034995A (en) * | 2006-03-08 | 2007-09-12 | 北京汉辰科技有限公司 | Internet personal video recording system and its terminal |
| US8713192B2 (en) * | 2006-12-08 | 2014-04-29 | Yahoo! Inc. | System and method for routing streaming data requests |
| CN101399836A (en) * | 2008-10-21 | 2009-04-01 | 中兴通讯股份有限公司 | Stream media service implementation method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010045830A1 (en) * | 2008-10-21 | 2010-04-29 | 中兴通讯股份有限公司 | Method and apparatus for implementing stream media service |
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